From 1a2e88cbf3581a3dee291d6f6c6d830705009be7 Mon Sep 17 00:00:00 2001 From: Pokechu22 Date: Wed, 12 Jan 2022 16:10:07 -0800 Subject: [PATCH 01/13] Externals: Update fmt to 8.1.1 --- Externals/fmt/CMakeLists.txt | 108 +- Externals/fmt/ChangeLog.rst | 1125 ++++- Externals/fmt/README.rst | 48 +- Externals/fmt/include/fmt/args.h | 234 ++ Externals/fmt/include/fmt/chrono.h | 1363 +++++- Externals/fmt/include/fmt/color.h | 166 +- Externals/fmt/include/fmt/compile.h | 846 ++-- Externals/fmt/include/fmt/core.h | 2708 ++++++++---- Externals/fmt/include/fmt/format-inl.h | 2442 +++++------ Externals/fmt/include/fmt/format.h | 4186 ++++++++----------- Externals/fmt/include/fmt/locale.h | 66 +- Externals/fmt/include/fmt/os.h | 227 +- Externals/fmt/include/fmt/ostream.h | 112 +- Externals/fmt/include/fmt/posix.h | 2 - Externals/fmt/include/fmt/printf.h | 480 +-- Externals/fmt/include/fmt/ranges.h | 746 +++- Externals/fmt/include/fmt/xchar.h | 236 ++ Externals/fmt/src/fmt.cc | 99 + Externals/fmt/src/format.cc | 67 +- Externals/fmt/src/os.cc | 133 +- Externals/fmt/support/appveyor.yml | 10 - Externals/fmt/support/bazel/.bazelrc | 1 + Externals/fmt/support/bazel/.bazelversion | 1 + Externals/fmt/support/bazel/BUILD.bazel | 29 + Externals/fmt/support/bazel/README.md | 73 + Externals/fmt/support/bazel/WORKSPACE.bazel | 1 + Externals/fmt/support/build-docs.py | 58 + Externals/fmt/support/build.gradle | 73 +- Externals/fmt/support/manage.py | 19 +- Externals/fmt/support/printable.py | 201 + Externals/fmt/support/rst2md.py | 2 +- Externals/fmt/support/travis-build.py | 119 - 32 files changed, 9696 insertions(+), 6285 deletions(-) create mode 100644 Externals/fmt/include/fmt/args.h delete mode 100755 Externals/fmt/include/fmt/posix.h create mode 100644 Externals/fmt/include/fmt/xchar.h create mode 100644 Externals/fmt/src/fmt.cc create mode 100644 Externals/fmt/support/bazel/.bazelrc create mode 100644 Externals/fmt/support/bazel/.bazelversion create mode 100644 Externals/fmt/support/bazel/BUILD.bazel create mode 100644 Externals/fmt/support/bazel/README.md create mode 100644 Externals/fmt/support/bazel/WORKSPACE.bazel create mode 100644 Externals/fmt/support/build-docs.py create mode 100644 Externals/fmt/support/printable.py delete mode 100755 Externals/fmt/support/travis-build.py diff --git a/Externals/fmt/CMakeLists.txt b/Externals/fmt/CMakeLists.txt index f21cf4561e..3bf80f8022 100755 --- a/Externals/fmt/CMakeLists.txt +++ b/Externals/fmt/CMakeLists.txt @@ -7,21 +7,34 @@ endif() # Determine if fmt is built as a subproject (using add_subdirectory) # or if it is the master project. -set(MASTER_PROJECT OFF) -if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR) - set(MASTER_PROJECT ON) - message(STATUS "CMake version: ${CMAKE_VERSION}") +if (NOT DEFINED FMT_MASTER_PROJECT) + set(FMT_MASTER_PROJECT OFF) + if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR) + set(FMT_MASTER_PROJECT ON) + message(STATUS "CMake version: ${CMAKE_VERSION}") + endif () endif () # Joins arguments and places the results in ${result_var}. function(join result_var) - set(result ) + set(result "") foreach (arg ${ARGN}) set(result "${result}${arg}") endforeach () set(${result_var} "${result}" PARENT_SCOPE) endfunction() +function(enable_module target) + if (MSVC) + set(BMI ${CMAKE_CURRENT_BINARY_DIR}/${target}.ifc) + target_compile_options(${target} + PRIVATE /interface /ifcOutput ${BMI} + INTERFACE /reference fmt=${BMI}) + endif () + set_target_properties(${target} PROPERTIES ADDITIONAL_CLEAN_FILES ${BMI}) + set_source_files_properties(${BMI} PROPERTIES GENERATED ON) +endfunction() + include(CMakeParseArguments) # Sets a cache variable with a docstring joined from multiple arguments: @@ -44,7 +57,7 @@ endfunction() # Set the default CMAKE_BUILD_TYPE to Release. # This should be done before the project command since the latter can set # CMAKE_BUILD_TYPE itself (it does so for nmake). -if (MASTER_PROJECT AND NOT CMAKE_BUILD_TYPE) +if (FMT_MASTER_PROJECT AND NOT CMAKE_BUILD_TYPE) set_verbose(CMAKE_BUILD_TYPE Release CACHE STRING "Choose the type of build, options are: None(CMAKE_CXX_FLAGS or " "CMAKE_C_FLAGS used) Debug Release RelWithDebInfo MinSizeRel.") @@ -61,12 +74,33 @@ option(FMT_WERROR "Halt the compilation with an error on compiler warnings." OFF) # Options that control generation of various targets. -option(FMT_DOC "Generate the doc target." ${MASTER_PROJECT}) -option(FMT_INSTALL "Generate the install target." ${MASTER_PROJECT}) -option(FMT_TEST "Generate the test target." ${MASTER_PROJECT}) +option(FMT_DOC "Generate the doc target." ${FMT_MASTER_PROJECT}) +option(FMT_INSTALL "Generate the install target." ${FMT_MASTER_PROJECT}) +option(FMT_TEST "Generate the test target." ${FMT_MASTER_PROJECT}) option(FMT_FUZZ "Generate the fuzz target." OFF) option(FMT_CUDA_TEST "Generate the cuda-test target." OFF) option(FMT_OS "Include core requiring OS (Windows/Posix) " ON) +option(FMT_MODULE "Build a module instead of a traditional library." OFF) +option(FMT_SYSTEM_HEADERS "Expose headers with marking them as system." OFF) + +set(FMT_CAN_MODULE OFF) +if (CMAKE_CXX_STANDARD GREATER 17 AND + # msvc 16.10-pre4 + MSVC AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 19.29.30035) + set(FMT_CAN_MODULE OFF) +endif () +if (NOT FMT_CAN_MODULE) + set(FMT_MODULE OFF) + message(STATUS "Module support is disabled.") +endif () +if (FMT_TEST AND FMT_MODULE) + # The tests require {fmt} to be compiled as traditional library + message(STATUS "Testing is incompatible with build mode 'module'.") +endif () +set(FMT_SYSTEM_HEADERS_ATTRIBUTE "") +if (FMT_SYSTEM_HEADERS) + set(FMT_SYSTEM_HEADERS_ATTRIBUTE SYSTEM) +endif () # Get version from core.h file(READ include/fmt/core.h core_h) @@ -102,6 +136,18 @@ if (${index} GREATER -1) endif () message(STATUS "Required features: ${FMT_REQUIRED_FEATURES}") +if (FMT_MASTER_PROJECT AND NOT DEFINED CMAKE_CXX_VISIBILITY_PRESET) + set_verbose(CMAKE_CXX_VISIBILITY_PRESET hidden CACHE STRING + "Preset for the export of private symbols") + set_property(CACHE CMAKE_CXX_VISIBILITY_PRESET PROPERTY STRINGS + hidden default) +endif () + +if (FMT_MASTER_PROJECT AND NOT DEFINED CMAKE_VISIBILITY_INLINES_HIDDEN) + set_verbose(CMAKE_VISIBILITY_INLINES_HIDDEN ON CACHE BOOL + "Whether to add a compile flag to hide symbols of inline functions") +endif () + if (CMAKE_CXX_COMPILER_ID MATCHES "GNU") set(PEDANTIC_COMPILE_FLAGS -pedantic-errors -Wall -Wextra -pedantic -Wold-style-cast -Wundef @@ -110,16 +156,16 @@ if (CMAKE_CXX_COMPILER_ID MATCHES "GNU") -Wcast-align -Wctor-dtor-privacy -Wdisabled-optimization -Winvalid-pch -Woverloaded-virtual - -Wconversion -Wswitch-enum -Wundef + -Wconversion -Wundef -Wno-ctor-dtor-privacy -Wno-format-nonliteral) if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.6) - set(PEDANTIC_COMPILE_FLAGS ${PEDANTIC_COMPILE_FLAGS} -Wnoexcept + set(PEDANTIC_COMPILE_FLAGS ${PEDANTIC_COMPILE_FLAGS} -Wno-dangling-else -Wno-unused-local-typedefs) endif () if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.0) set(PEDANTIC_COMPILE_FLAGS ${PEDANTIC_COMPILE_FLAGS} -Wdouble-promotion -Wtrampolines -Wzero-as-null-pointer-constant -Wuseless-cast - -Wvector-operation-performance -Wsized-deallocation) + -Wvector-operation-performance -Wsized-deallocation -Wshadow) endif () if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 6.0) set(PEDANTIC_COMPILE_FLAGS ${PEDANTIC_COMPILE_FLAGS} -Wshift-overflow=2 @@ -130,7 +176,8 @@ endif () if (CMAKE_CXX_COMPILER_ID MATCHES "Clang") set(PEDANTIC_COMPILE_FLAGS -Wall -Wextra -pedantic -Wconversion -Wundef - -Wdeprecated -Wweak-vtables) + -Wdeprecated -Wweak-vtables -Wshadow + -Wno-gnu-zero-variadic-macro-arguments) check_cxx_compiler_flag(-Wzero-as-null-pointer-constant HAS_NULLPTR_WARNING) if (HAS_NULLPTR_WARNING) set(PEDANTIC_COMPILE_FLAGS ${PEDANTIC_COMPILE_FLAGS} @@ -144,7 +191,7 @@ if (MSVC) set(WERROR_FLAG /WX) endif () -if (MASTER_PROJECT AND CMAKE_GENERATOR MATCHES "Visual Studio") +if (FMT_MASTER_PROJECT AND CMAKE_GENERATOR MATCHES "Visual Studio") # If Microsoft SDK is installed create script run-msbuild.bat that # calls SetEnv.cmd to set up build environment and runs msbuild. # It is useful when building Visual Studio projects with the SDK @@ -183,9 +230,12 @@ function(add_headers VAR) endfunction() # Define the fmt library, its includes and the needed defines. -add_headers(FMT_HEADERS chrono.h color.h compile.h core.h format.h format-inl.h - locale.h os.h ostream.h posix.h printf.h ranges.h) -if (FMT_OS) +add_headers(FMT_HEADERS args.h chrono.h color.h compile.h core.h format.h + format-inl.h locale.h os.h ostream.h printf.h ranges.h + xchar.h) +if (FMT_MODULE) + set(FMT_SOURCES src/fmt.cc) +elseif (FMT_OS) set(FMT_SOURCES src/format.cc src/os.cc) else() set(FMT_SOURCES src/format.cc) @@ -199,7 +249,7 @@ if (HAVE_STRTOD_L) endif () if (MINGW) - check_cxx_compiler_flag("Wa,-mbig-obj" FMT_HAS_MBIG_OBJ) + check_cxx_compiler_flag("-Wa,-mbig-obj" FMT_HAS_MBIG_OBJ) if (${FMT_HAS_MBIG_OBJ}) target_compile_options(fmt PUBLIC "-Wa,-mbig-obj") endif() @@ -211,10 +261,13 @@ endif () if (FMT_PEDANTIC) target_compile_options(fmt PRIVATE ${PEDANTIC_COMPILE_FLAGS}) endif () +if (FMT_MODULE) + enable_module(fmt) +endif () target_compile_features(fmt INTERFACE ${FMT_REQUIRED_FEATURES}) -target_include_directories(fmt PUBLIC +target_include_directories(fmt ${FMT_SYSTEM_HEADERS_ATTRIBUTE} PUBLIC $ $) @@ -250,7 +303,7 @@ add_library(fmt::fmt-header-only ALIAS fmt-header-only) target_compile_definitions(fmt-header-only INTERFACE FMT_HEADER_ONLY=1) target_compile_features(fmt-header-only INTERFACE ${FMT_REQUIRED_FEATURES}) -target_include_directories(fmt-header-only INTERFACE +target_include_directories(fmt-header-only ${FMT_SYSTEM_HEADERS_ATTRIBUTE} INTERFACE $ $) @@ -294,6 +347,13 @@ if (FMT_INSTALL) INSTALL_DESTINATION ${FMT_CMAKE_DIR}) set(INSTALL_TARGETS fmt fmt-header-only) + + # Install the library and headers. + install(TARGETS ${INSTALL_TARGETS} EXPORT ${targets_export_name} + LIBRARY DESTINATION ${FMT_LIB_DIR} + ARCHIVE DESTINATION ${FMT_LIB_DIR} + RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}) + # Use a namespace because CMake provides better diagnostics for namespaced # imported targets. export(TARGETS ${INSTALL_TARGETS} NAMESPACE fmt:: @@ -306,12 +366,6 @@ if (FMT_INSTALL) install(EXPORT ${targets_export_name} DESTINATION ${FMT_CMAKE_DIR} NAMESPACE fmt::) - # Install the library and headers. - install(TARGETS ${INSTALL_TARGETS} EXPORT ${targets_export_name} - LIBRARY DESTINATION ${FMT_LIB_DIR} - ARCHIVE DESTINATION ${FMT_LIB_DIR} - RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}) - install(FILES $ DESTINATION ${FMT_LIB_DIR} OPTIONAL) install(FILES ${FMT_HEADERS} DESTINATION "${FMT_INC_DIR}/fmt") @@ -340,7 +394,7 @@ if (FMT_FUZZ) endif () set(gitignore ${PROJECT_SOURCE_DIR}/.gitignore) -if (MASTER_PROJECT AND EXISTS ${gitignore}) +if (FMT_MASTER_PROJECT AND EXISTS ${gitignore}) # Get the list of ignored files from .gitignore. file (STRINGS ${gitignore} lines) list(REMOVE_ITEM lines /doc/html) diff --git a/Externals/fmt/ChangeLog.rst b/Externals/fmt/ChangeLog.rst index f9a2d8ebbe..18b84c7df7 100755 --- a/Externals/fmt/ChangeLog.rst +++ b/Externals/fmt/ChangeLog.rst @@ -1,3 +1,1122 @@ +8.1.1 - 2022-01-06 +------------------ + +* Restored ABI compatibility with version 8.0.x + (`#2695 `_, + `#2696 `_). + Thanks `@saraedum (Julian Rüth) `_. + +* Fixed chorno formatting on big endian systems + (`#2698 `_, + `#2699 `_). + Thanks `@phprus (Vladislav Shchapov) `_ and + `@xvitaly (Vitaly Zaitsev) `_. + +* Fixed a linkage error with mingw + (`#2691 `_, + `#2692 `_). + Thanks `@rbberger (Richard Berger) `_. + +8.1.0 - 2022-01-02 +------------------ + +* Optimized chrono formatting + (`#2500 `_, + `#2537 `_, + `#2541 `_, + `#2544 `_, + `#2550 `_, + `#2551 `_, + `#2576 `_, + `#2577 `_, + `#2586 `_, + `#2591 `_, + `#2594 `_, + `#2602 `_, + `#2617 `_, + `#2628 `_, + `#2633 `_, + `#2670 `_, + `#2671 `_). + + Processing of some specifiers such as ``%z`` and ``%Y`` is now up to 10-20 + times faster, for example on GCC 11 with libstdc++:: + + ---------------------------------------------------------------------------- + Benchmark Before After + ---------------------------------------------------------------------------- + FMTFormatter_z 261 ns 26.3 ns + FMTFormatterCompile_z 246 ns 11.6 ns + FMTFormatter_Y 263 ns 26.1 ns + FMTFormatterCompile_Y 244 ns 10.5 ns + ---------------------------------------------------------------------------- + + Thanks `@phprus (Vladislav Shchapov) `_ and + `@toughengineer (Pavel Novikov) `_. + +* Implemented subsecond formatting for chrono durations + (`#2623 `_). + For example (`godbolt `__): + + .. code:: c++ + + #include + + int main() { + fmt::print("{:%S}", std::chrono::milliseconds(1234)); + } + + prints "01.234". + + Thanks `@matrackif `_. + +* Fixed handling of precision 0 when formatting chrono durations + (`#2587 `_, + `#2588 `_). + Thanks `@lukester1975 `_. + +* Fixed an overflow on invalid inputs in the ``tm`` formatter + (`#2564 `_). + Thanks `@phprus (Vladislav Shchapov) `_. + +* Added ``fmt::group_digits`` that formats integers with a non-localized digit + separator (comma) for groups of three digits. + For example (`godbolt `__): + + .. code:: c++ + + #include + + int main() { + fmt::print("{} dollars", fmt::group_digits(1000000)); + } + + prints "1,000,000 dollars". + +* Added support for faint, conceal, reverse and blink text styles + (`#2394 `_): + + https://user-images.githubusercontent.com/576385/147710227-c68f5317-f8fa-42c3-9123-7c4ba3c398cb.mp4 + + Thanks `@benit8 (Benoît Lormeau) `_ and + `@data-man (Dmitry Atamanov) `_. + +* Added experimental support for compile-time floating point formatting + (`#2426 `_, + `#2470 `_). + It is currently limited to the header-only mode. + Thanks `@alexezeder (Alexey Ochapov) `_. + +* Added UDL-based named argument support to compile-time format string checks + (`#2640 `_, + `#2649 `_). + For example (`godbolt `__): + + .. code:: c++ + + #include + + int main() { + using namespace fmt::literals; + fmt::print("{answer:s}", "answer"_a=42); + } + + gives a compile-time error on compilers with C++20 ``consteval`` and non-type + template parameter support (gcc 10+) because ``s`` is not a valid format + specifier for an integer. + + Thanks `@alexezeder (Alexey Ochapov) `_. + +* Implemented escaping of string range elements. + For example (`godbolt `__): + + .. code:: c++ + + #include + #include + + int main() { + fmt::print("{}", std::vector{"\naan"}); + } + + is now printed as:: + + ["\naan"] + + instead of:: + + [" + aan"] + +* Switched to JSON-like representation of maps and sets for consistency with + Python's ``str.format``. + For example (`godbolt `__): + + .. code:: c++ + + #include + #include + + int main() { + fmt::print("{}", std::map{{"answer", 42}}); + } + + is now printed as:: + + {"answer": 42} + +* Extended ``fmt::join`` to support C++20-only ranges + (`#2549 `_). + Thanks `@BRevzin (Barry Revzin) `_. + +* Optimized handling of non-const-iterable ranges and implemented initial + support for non-const-formattable types. + +* Disabled implicit conversions of scoped enums to integers that was + accidentally introduced in earlier versions + (`#1841 `_). + +* Deprecated implicit conversion of ``[const] signed char*`` and + ``[const] unsigned char*`` to C strings. + +* Deprecated ``_format``, a legacy UDL-based format API + (`#2646 `_). + Thanks `@alexezeder (Alexey Ochapov) `_. + +* Marked ``format``, ``formatted_size`` and ``to_string`` as ``[[nodiscard]]`` + (`#2612 `_). + `@0x8000-0000 (Florin Iucha) `_. + +* Added missing diagnostic when trying to format function and member pointers + as well as objects convertible to pointers which is explicitly disallowed + (`#2598 `_, + `#2609 `_, + `#2610 `_). + Thanks `@AlexGuteniev (Alex Guteniev) `_. + +* Optimized writing to a contiguous buffer with ``format_to_n`` + (`#2489 `_). + Thanks `@Roman-Koshelev `_. + +* Optimized writing to non-``char`` buffers + (`#2477 `_). + Thanks `@Roman-Koshelev `_. + +* Decimal point is now localized when using the ``L`` specifier. + +* Improved floating point formatter implementation + (`#2498 `_, + `#2499 `_). + Thanks `@Roman-Koshelev `_. + +* Fixed handling of very large precision in fixed format + (`#2616 `_). + +* Made a table of cached powers used in FP formatting static + (`#2509 `_). + Thanks `@jk-jeon (Junekey Jeon) `_. + +* Resolved a lookup ambiguity with C++20 format-related functions due to ADL + (`#2639 `_, + `#2641 `_). + Thanks `@mkurdej (Marek Kurdej) `_. + +* Removed unnecessary inline namespace qualification + (`#2642 `_, + `#2643 `_). + Thanks `@mkurdej (Marek Kurdej) `_. + +* Implemented argument forwarding in ``format_to_n`` + (`#2462 `_, + `#2463 `_). + Thanks `@owent (WenTao Ou) `_. + +* Fixed handling of implicit conversions in ``fmt::to_string`` and format string + compilation (`#2565 `_). + +* Changed the default access mode of files created by ``fmt::output_file`` to + ``-rw-r--r--`` for consistency with ``fopen`` + (`#2530 `_). + +* Make ``fmt::ostream::flush`` public + (`#2435 `_). + +* Improved C++14/17 attribute detection + (`#2615 `_). + Thanks `@AlexGuteniev (Alex Guteniev) `_. + +* Improved ``consteval`` detection for MSVC + (`#2559 `_). + Thanks `@DanielaE (Daniela Engert) `_. + +* Improved documentation + (`#2406 `_, + `#2446 `_, + `#2493 `_, + `#2513 `_, + `#2515 `_, + `#2522 `_, + `#2562 `_, + `#2575 `_, + `#2606 `_, + `#2620 `_, + `#2676 `_). + Thanks `@sobolevn (Nikita Sobolev) `_, + `@UnePierre (Max FERGER) `_, + `@zhsj `_, + `@phprus (Vladislav Shchapov) `_, + `@ericcurtin (Eric Curtin) `_, + `@Lounarok `_. + +* Improved fuzzers and added a fuzzer for chrono timepoint formatting + (`#2461 `_, + `#2469 `_). + `@pauldreik (Paul Dreik) `_, + +* Added the ``FMT_SYSTEM_HEADERS`` CMake option setting which marks {fmt}'s + headers as system. It can be used to suppress warnings + (`#2644 `_, + `#2651 `_). + Thanks `@alexezeder (Alexey Ochapov) `_. + +* Added the Bazel build system support + (`#2505 `_, + `#2516 `_). + Thanks `@Vertexwahn `_. + +* Improved build configuration and tests + (`#2437 `_, + `#2558 `_, + `#2648 `_, + `#2650 `_, + `#2663 `_, + `#2677 `_). + Thanks `@DanielaE (Daniela Engert) `_, + `@alexezeder (Alexey Ochapov) `_, + `@phprus (Vladislav Shchapov) `_. + +* Fixed various warnings and compilation issues + (`#2353 `_, + `#2356 `_, + `#2399 `_, + `#2408 `_, + `#2414 `_, + `#2427 `_, + `#2432 `_, + `#2442 `_, + `#2434 `_, + `#2439 `_, + `#2447 `_, + `#2450 `_, + `#2455 `_, + `#2465 `_, + `#2472 `_, + `#2474 `_, + `#2476 `_, + `#2478 `_, + `#2479 `_, + `#2481 `_, + `#2482 `_, + `#2483 `_, + `#2490 `_, + `#2491 `_, + `#2510 `_, + `#2518 `_, + `#2528 `_, + `#2529 `_, + `#2539 `_, + `#2540 `_, + `#2545 `_, + `#2555 `_, + `#2557 `_, + `#2570 `_, + `#2573 `_, + `#2582 `_, + `#2605 `_, + `#2611 `_, + `#2647 `_, + `#2627 `_, + `#2630 `_, + `#2635 `_, + `#2638 `_, + `#2653 `_, + `#2654 `_, + `#2661 `_, + `#2664 `_, + `#2684 `_). + Thanks `@DanielaE (Daniela Engert) `_, + `@mwinterb `_, + `@cdacamar (Cameron DaCamara) `_, + `@TrebledJ (Johnathan) `_, + `@bodomartin (brm) `_, + `@cquammen (Cory Quammen) `_, + `@white238 (Chris White) `_, + `@mmarkeloff (Max) `_, + `@palacaze (Pierre-Antoine Lacaze) `_, + `@jcelerier (Jean-Michaël Celerier) `_, + `@mborn-adi (Mathias Born) `_, + `@BrukerJWD (Jonathan W) `_, + `@spyridon97 (Spiros Tsalikis) `_, + `@phprus (Vladislav Shchapov) `_, + `@oliverlee (Oliver Lee) `_, + `@joshessman-llnl (Josh Essman) `_, + `@akohlmey (Axel Kohlmeyer) `_, + `@timkalu `_, + `@olupton (Olli Lupton) `_, + `@Acretock `_, + `@alexezeder (Alexey Ochapov) `_, + `@andrewcorrigan (Andrew Corrigan) `_, + `@lucpelletier `_, + `@HazardyKnusperkeks (Björn Schäpers) `_. + +8.0.1 - 2021-07-02 +------------------ + +* Fixed the version number in the inline namespace + (`#2374 `_). + +* Added a missing presentation type check for ``std::string`` + (`#2402 `_). + +* Fixed a linkage error when mixing code built with clang and gcc + (`#2377 `_). + +* Fixed documentation issues + (`#2396 `_, + `#2403 `_, + `#2406 `_). + Thanks `@mkurdej (Marek Kurdej) `_. + +* Removed dead code in FP formatter ( + `#2398 `_). + Thanks `@javierhonduco (Javier Honduvilla Coto) + `_. + +* Fixed various warnings and compilation issues + (`#2351 `_, + `#2359 `_, + `#2365 `_, + `#2368 `_, + `#2370 `_, + `#2376 `_, + `#2381 `_, + `#2382 `_, + `#2386 `_, + `#2389 `_, + `#2395 `_, + `#2397 `_, + `#2400 `_, + `#2401 `_, + `#2407 `_). + Thanks `@zx2c4 (Jason A. Donenfeld) `_, + `@AidanSun05 (Aidan Sun) `_, + `@mattiasljungstrom (Mattias Ljungström) + `_, + `@joemmett (Jonathan Emmett) `_, + `@erengy (Eren Okka) `_, + `@patlkli (Patrick Geltinger) `_, + `@gsjaardema (Greg Sjaardema) `_, + `@phprus (Vladislav Shchapov) `_. + +8.0.0 - 2021-06-21 +------------------ + +* Enabled compile-time format string checks by default. + For example (`godbolt `__): + + .. code:: c++ + + #include + + int main() { + fmt::print("{:d}", "I am not a number"); + } + + gives a compile-time error on compilers with C++20 ``consteval`` support + (gcc 10+, clang 11+) because ``d`` is not a valid format specifier for a + string. + + To pass a runtime string wrap it in ``fmt::runtime``: + + .. code:: c++ + + fmt::print(fmt::runtime("{:d}"), "I am not a number"); + +* Added compile-time formatting + (`#2019 `_, + `#2044 `_, + `#2056 `_, + `#2072 `_, + `#2075 `_, + `#2078 `_, + `#2129 `_, + `#2326 `_). + For example (`godbolt `__): + + .. code:: c++ + + #include + + consteval auto compile_time_itoa(int value) -> std::array { + auto result = std::array(); + fmt::format_to(result.data(), FMT_COMPILE("{}"), value); + return result; + } + + constexpr auto answer = compile_time_itoa(42); + + Most of the formatting functionality is available at compile time with a + notable exception of floating-point numbers and pointers. + Thanks `@alexezeder (Alexey Ochapov) `_. + +* Optimized handling of format specifiers during format string compilation. + For example, hexadecimal formatting (``"{:x}"``) is now 3-7x faster than + before when using ``format_to`` with format string compilation and a + stack-allocated buffer (`#1944 `_). + + Before (7.1.3):: + + ---------------------------------------------------------------------------- + Benchmark Time CPU Iterations + ---------------------------------------------------------------------------- + FMTCompileOld/0 15.5 ns 15.5 ns 43302898 + FMTCompileOld/42 16.6 ns 16.6 ns 43278267 + FMTCompileOld/273123 18.7 ns 18.6 ns 37035861 + FMTCompileOld/9223372036854775807 19.4 ns 19.4 ns 35243000 + ---------------------------------------------------------------------------- + + After (8.x):: + + ---------------------------------------------------------------------------- + Benchmark Time CPU Iterations + ---------------------------------------------------------------------------- + FMTCompileNew/0 1.99 ns 1.99 ns 360523686 + FMTCompileNew/42 2.33 ns 2.33 ns 279865664 + FMTCompileNew/273123 3.72 ns 3.71 ns 190230315 + FMTCompileNew/9223372036854775807 5.28 ns 5.26 ns 130711631 + ---------------------------------------------------------------------------- + + It is even faster than ``std::to_chars`` from libc++ compiled with clang on + macOS:: + + ---------------------------------------------------------------------------- + Benchmark Time CPU Iterations + ---------------------------------------------------------------------------- + ToChars/0 4.42 ns 4.41 ns 160196630 + ToChars/42 5.00 ns 4.98 ns 140735201 + ToChars/273123 7.26 ns 7.24 ns 95784130 + ToChars/9223372036854775807 8.77 ns 8.75 ns 75872534 + ---------------------------------------------------------------------------- + + In other cases, especially involving ``std::string`` construction, the + speed up is usually lower because handling format specifiers takes a smaller + fraction of the total time. + +* Added the ``_cf`` user-defined literal to represent a compiled format string. + It can be used instead of the ``FMT_COMPILE`` macro + (`#2043 `_, + `#2242 `_): + + .. code:: c++ + + #include + + using namespace fmt::literals; + auto s = fmt::format(FMT_COMPILE("{}"), 42); // 🙁 not modern + auto s = fmt::format("{}"_cf, 42); // 🙂 modern as hell + + It requires compiler support for class types in non-type template parameters + (a C++20 feature) which is available in GCC 9.3+. + Thanks `@alexezeder (Alexey Ochapov) `_. + +* Format string compilation now requires ``format`` functions of ``formatter`` + specializations for user-defined types to be ``const``: + + .. code:: c++ + + template <> struct fmt::formatter: formatter { + template + auto format(my_type obj, FormatContext& ctx) const { // Note const here. + // ... + } + }; + +* Added UDL-based named argument support to format string compilation + (`#2243 `_, + `#2281 `_). For example: + + .. code:: c++ + + #include + + using namespace fmt::literals; + auto s = fmt::format(FMT_COMPILE("{answer}"), "answer"_a = 42); + + Here the argument named "answer" is resolved at compile time with no + runtime overhead. + Thanks `@alexezeder (Alexey Ochapov) `_. + +* Added format string compilation support to ``fmt::print`` + (`#2280 `_, + `#2304 `_). + Thanks `@alexezeder (Alexey Ochapov) `_. + +* Added initial support for compiling {fmt} as a C++20 module + (`#2235 `_, + `#2240 `_, + `#2260 `_, + `#2282 `_, + `#2283 `_, + `#2288 `_, + `#2298 `_, + `#2306 `_, + `#2307 `_, + `#2309 `_, + `#2318 `_, + `#2324 `_, + `#2332 `_, + `#2340 `_). + Thanks `@DanielaE (Daniela Engert) `_. + +* Made symbols private by default reducing shared library size + (`#2301 `_). For example there was + a ~15% reported reduction on one platform. + Thanks `@sergiud (Sergiu Deitsch) `_. + +* Optimized includes making the result of preprocessing ``fmt/format.h`` + ~20% smaller with libstdc++/C++20 and slightly improving build times + (`#1998 `_). + +* Added support of ranges with non-const ``begin`` / ``end`` + (`#1953 `_). + Thanks `@kitegi (sarah) `_. + +* Added support of ``std::byte`` and other formattable types to ``fmt::join`` + (`#1981 `_, + `#2040 `_, + `#2050 `_, + `#2262 `_). For example: + + .. code:: c++ + + #include + #include + #include + + int main() { + auto bytes = std::vector{std::byte(4), std::byte(2)}; + fmt::print("{}", fmt::join(bytes, "")); + } + + prints "42". + + Thanks `@kamibo (Camille Bordignon) `_. + +* Implemented the default format for ``std::chrono::system_clock`` + (`#2319 `_, + `#2345 `_). For example: + + .. code:: c++ + + #include + + int main() { + fmt::print("{}", std::chrono::system_clock::now()); + } + + prints "2021-06-18 15:22:00" (the output depends on the current date and + time). Thanks `@sunmy2019 `_. + +* Made more chrono specifiers locale independent by default. Use the ``'L'`` + specifier to get localized formatting. For example: + + .. code:: c++ + + #include + + int main() { + std::locale::global(std::locale("ru_RU.UTF-8")); + auto monday = std::chrono::weekday(1); + fmt::print("{}\n", monday); // prints "Mon" + fmt::print("{:L}\n", monday); // prints "пн" + } + +* Improved locale handling in chrono formatting + (`#2337 `_, + `#2349 `_, + `#2350 `_). + Thanks `@phprus (Vladislav Shchapov) `_. + +* Deprecated ``fmt/locale.h`` moving the formatting functions that take a + locale to ``fmt/format.h`` (``char``) and ``fmt/xchar`` (other overloads). + This doesn't introduce a dependency on ```` so there is virtually no + compile time effect. + +* Deprecated an undocumented ``format_to`` overload that takes + ``basic_memory_buffer``. + +* Made parameter order in ``vformat_to`` consistent with ``format_to`` + (`#2327 `_). + +* Added support for time points with arbitrary durations + (`#2208 `_). For example: + + .. code:: c++ + + #include + + int main() { + using tp = std::chrono::time_point< + std::chrono::system_clock, std::chrono::seconds>; + fmt::print("{:%S}", tp(std::chrono::seconds(42))); + } + + prints "42". + +* Formatting floating-point numbers no longer produces trailing zeros by default + for consistency with ``std::format``. For example: + + .. code:: c++ + + #include + + int main() { + fmt::print("{0:.3}", 1.1); + } + + prints "1.1". Use the ``'#'`` specifier to keep trailing zeros. + +* Dropped a limit on the number of elements in a range and replaced ``{}`` with + ``[]`` as range delimiters for consistency with Python's ``str.format``. + +* The ``'L'`` specifier for locale-specific numeric formatting can now be + combined with presentation specifiers as in ``std::format``. For example: + + .. code:: c++ + + #include + #include + + int main() { + std::locale::global(std::locale("fr_FR.UTF-8")); + fmt::print("{0:.2Lf}", 0.42); + } + + prints "0,42". The deprecated ``'n'`` specifier has been removed. + +* Made the ``0`` specifier ignored for infinity and NaN + (`#2305 `_, + `#2310 `_). + Thanks `@Liedtke (Matthias Liedtke) `_. + +* Made the hexfloat formatting use the right alignment by default + (`#2308 `_, + `#2317 `_). + Thanks `@Liedtke (Matthias Liedtke) `_. + +* Removed the deprecated numeric alignment (``'='``). Use the ``'0'`` specifier + instead. + +* Removed the deprecated ``fmt/posix.h`` header that has been replaced with + ``fmt/os.h``. + +* Removed the deprecated ``format_to_n_context``, ``format_to_n_args`` and + ``make_format_to_n_args``. They have been replaced with ``format_context``, + ``format_args` and ``make_format_args`` respectively. + +* Moved ``wchar_t``-specific functions and types to ``fmt/xchar.h``. + You can define ``FMT_DEPRECATED_INCLUDE_XCHAR`` to automatically include + ``fmt/xchar.h`` from ``fmt/format.h`` but this will be disabled in the next + major release. + +* Fixed handling of the ``'+'`` specifier in localized formatting + (`#2133 `_). + +* Added support for the ``'s'`` format specifier that gives textual + representation of ``bool`` + (`#2094 `_, + `#2109 `_). For example: + + .. code:: c++ + + #include + + int main() { + fmt::print("{:s}", true); + } + + prints "true". + Thanks `@powercoderlol (Ivan Polyakov) `_. + +* Made ``fmt::ptr`` work with function pointers + (`#2131 `_). For example: + + .. code:: c++ + + #include + + int main() { + fmt::print("My main: {}\n", fmt::ptr(main)); + } + + Thanks `@mikecrowe (Mike Crowe) `_. + +* The undocumented support for specializing ``formatter`` for pointer types + has been removed. + +* Fixed ``fmt::formatted_size`` with format string compilation + (`#2141 `_, + `#2161 `_). + Thanks `@alexezeder (Alexey Ochapov) `_. + +* Fixed handling of empty format strings during format string compilation + (`#2042 `_): + + .. code:: c++ + + auto s = fmt::format(FMT_COMPILE("")); + + Thanks `@alexezeder (Alexey Ochapov) `_. + +* Fixed handling of enums in ``fmt::to_string`` + (`#2036 `_). + +* Improved width computation + (`#2033 `_, + `#2091 `_). For example: + + .. code:: c++ + + #include + + int main() { + fmt::print("{:-<10}{}\n", "你好", "世界"); + fmt::print("{:-<10}{}\n", "hello", "world"); + } + + prints + + .. image:: https://user-images.githubusercontent.com/576385/ + 119840373-cea3ca80-beb9-11eb-91e0-54266c48e181.png + + on a modern terminal. + +* The experimental fast output stream (``fmt::ostream``) is now truncated by + default for consistency with ``fopen`` + (`#2018 `_). For example: + + .. code:: c++ + + #include + + int main() { + fmt::ostream out1 = fmt::output_file("guide"); + out1.print("Zaphod"); + out1.close(); + fmt::ostream out2 = fmt::output_file("guide"); + out2.print("Ford"); + } + + writes "Ford" to the file "guide". To preserve the old file content if any + pass ``fmt::file::WRONLY | fmt::file::CREATE`` flags to ``fmt::output_file``. + +* Fixed moving of ``fmt::ostream`` that holds buffered data + (`#2197 `_, + `#2198 `_). + Thanks `@vtta `_. + +* Replaced the ``fmt::system_error`` exception with a function of the same + name that constructs ``std::system_error`` + (`#2266 `_). + +* Replaced the ``fmt::windows_error`` exception with a function of the same + name that constructs ``std::system_error`` with the category returned by + ``fmt::system_category()`` + (`#2274 `_, + `#2275 `_). + The latter is similar to ``std::sytem_category`` but correctly handles UTF-8. + Thanks `@phprus (Vladislav Shchapov) `_. + +* Replaced ``fmt::error_code`` with ``std::error_code`` and made it formattable + (`#2269 `_, + `#2270 `_, + `#2273 `_). + Thanks `@phprus (Vladislav Shchapov) `_. + +* Added speech synthesis support + (`#2206 `_). + +* Made ``format_to`` work with a memory buffer that has a custom allocator + (`#2300 `_). + Thanks `@voxmea `_. + +* Added ``Allocator::max_size`` support to ``basic_memory_buffer``. + (`#1960 `_). + Thanks `@phprus (Vladislav Shchapov) `_. + +* Added wide string support to ``fmt::join`` + (`#2236 `_). + Thanks `@crbrz `_. + +* Made iterators passed to ``formatter`` specializations via a format context + satisfy C++20 ``std::output_iterator`` requirements + (`#2156 `_, + `#2158 `_, + `#2195 `_, + `#2204 `_). + Thanks `@randomnetcat (Jason Cobb) `_. + +* Optimized the ``printf`` implementation + (`#1982 `_, + `#1984 `_, + `#2016 `_, + `#2164 `_). + Thanks `@rimathia `_ and + `@moiwi `_. + +* Improved detection of ``constexpr`` ``char_traits`` + (`#2246 `_, + `#2257 `_). + Thanks `@phprus (Vladislav Shchapov) `_. + +* Fixed writing to ``stdout`` when it is redirected to ``NUL`` on Windows + (`#2080 `_). + +* Fixed exception propagation from iterators + (`#2097 `_). + +* Improved ``strftime`` error handling + (`#2238 `_, + `#2244 `_). + Thanks `@yumeyao `_. + +* Stopped using deprecated GCC UDL template extension. + +* Added ``fmt/args.h`` to the install target + (`#2096 `_). + +* Error messages are now passed to assert when exceptions are disabled + (`#2145 `_). + Thanks `@NobodyXu (Jiahao XU) `_. + +* Added the ``FMT_MASTER_PROJECT`` CMake option to control build and install + targets when {fmt} is included via ``add_subdirectory`` + (`#2098 `_, + `#2100 `_). + Thanks `@randomizedthinking `_. + +* Improved build configuration + (`#2026 `_, + `#2122 `_). + Thanks `@luncliff (Park DongHa) `_ and + `@ibaned (Dan Ibanez) `_. + +* Fixed various warnings and compilation issues + (`#1947 `_, + `#1959 `_, + `#1963 `_, + `#1965 `_, + `#1966 `_, + `#1974 `_, + `#1975 `_, + `#1990 `_, + `#2000 `_, + `#2001 `_, + `#2002 `_, + `#2004 `_, + `#2006 `_, + `#2009 `_, + `#2010 `_, + `#2038 `_, + `#2039 `_, + `#2047 `_, + `#2053 `_, + `#2059 `_, + `#2065 `_, + `#2067 `_, + `#2068 `_, + `#2073 `_, + `#2103 `_, + `#2105 `_, + `#2106 `_, + `#2107 `_, + `#2116 `_, + `#2117 `_, + `#2118 `_, + `#2119 `_, + `#2127 `_, + `#2128 `_, + `#2140 `_, + `#2142 `_, + `#2143 `_, + `#2144 `_, + `#2147 `_, + `#2148 `_, + `#2149 `_, + `#2152 `_, + `#2160 `_, + `#2170 `_, + `#2175 `_, + `#2176 `_, + `#2177 `_, + `#2178 `_, + `#2179 `_, + `#2180 `_, + `#2181 `_, + `#2183 `_, + `#2184 `_, + `#2185 `_, + `#2186 `_, + `#2187 `_, + `#2190 `_, + `#2192 `_, + `#2194 `_, + `#2205 `_, + `#2210 `_, + `#2211 `_, + `#2215 `_, + `#2216 `_, + `#2218 `_, + `#2220 `_, + `#2228 `_, + `#2229 `_, + `#2230 `_, + `#2233 `_, + `#2239 `_, + `#2248 `_, + `#2252 `_, + `#2253 `_, + `#2255 `_, + `#2261 `_, + `#2278 `_, + `#2284 `_, + `#2287 `_, + `#2289 `_, + `#2290 `_, + `#2293 `_, + `#2295 `_, + `#2296 `_, + `#2297 `_, + `#2311 `_, + `#2313 `_, + `#2315 `_, + `#2320 `_, + `#2321 `_, + `#2323 `_, + `#2328 `_, + `#2329 `_, + `#2333 `_, + `#2338 `_, + `#2341 `_). + Thanks `@darklukee `_, + `@fagg (Ashton Fagg) `_, + `@killerbot242 (Lieven de Cock) `_, + `@jgopel (Jonathan Gopel) `_, + `@yeswalrus (Walter Gray) `_, + `@Finkman `_, + `@HazardyKnusperkeks (Björn Schäpers) `_, + `@dkavolis (Daumantas Kavolis) `_, + `@concatime (Issam Maghni) `_, + `@chronoxor (Ivan Shynkarenka) `_, + `@summivox (Yin Zhong) `_, + `@yNeo `_, + `@Apache-HB (Elliot) `_, + `@alexezeder (Alexey Ochapov) `_, + `@toojays (John Steele Scott) `_, + `@Brainy0207 `_, + `@vadz (VZ) `_, + `@imsherlock (Ryan Sherlock) `_, + `@phprus (Vladislav Shchapov) `_, + `@white238 (Chris White) `_, + `@yafshar (Yaser Afshar) `_, + `@BillyDonahue (Billy Donahue) `_, + `@jstaahl `_, + `@denchat `_, + `@DanielaE (Daniela Engert) `_, + `@ilyakurdyukov (Ilya Kurdyukov) `_, + `@ilmai `_, + `@JessyDL (Jessy De Lannoit) `_, + `@sergiud (Sergiu Deitsch) `_, + `@mwinterb `_, + `@sven-herrmann `_, + `@jmelas (John Melas) `_, + `@twoixter (Jose Miguel Pérez) `_, + `@crbrz `_, + `@upsj (Tobias Ribizel) `_. + +* Improved documentation + (`#1986 `_, + `#2051 `_, + `#2057 `_, + `#2081 `_, + `#2084 `_, + `#2312 `_). + Thanks `@imba-tjd (谭九鼎) `_, + `@0x416c69 (AlιAѕѕaѕѕιN) `_, + `@mordante `_. + +* Continuous integration and test improvements + (`#1969 `_, + `#1991 `_, + `#2020 `_, + `#2110 `_, + `#2114 `_, + `#2196 `_, + `#2217 `_, + `#2247 `_, + `#2256 `_, + `#2336 `_, + `#2346 `_). + Thanks `@jgopel (Jonathan Gopel) `_, + `@alexezeder (Alexey Ochapov) `_ and + `@DanielaE (Daniela Engert) `_. + +7.1.3 - 2020-11-24 +------------------ + +* Fixed handling of buffer boundaries in ``format_to_n`` + (`#1996 `_, + `#2029 `_). + +* Fixed linkage errors when linking with a shared library + (`#2011 `_). + +* Reintroduced ostream support to range formatters + (`#2014 `_). + +* Worked around an issue with mixing std versions in gcc + (`#2017 `_). + +7.1.2 - 2020-11-04 +------------------ + +* Fixed floating point formatting with large precision + (`#1976 `_). + +7.1.1 - 2020-11-01 +------------------ + +* Fixed ABI compatibility with 7.0.x + (`#1961 `_). + +* Added the ``FMT_ARM_ABI_COMPATIBILITY`` macro to work around ABI + incompatibility between GCC and Clang on ARM + (`#1919 `_). + +* Worked around a SFINAE bug in GCC 8 + (`#1957 `_). + +* Fixed linkage errors when building with GCC's LTO + (`#1955 `_). + +* Fixed a compilation error when building without ``__builtin_clz`` or equivalent + (`#1968 `_). + Thanks `@tohammer (Tobias Hammer) `_. + +* Fixed a sign conversion warning + (`#1964 `_). + Thanks `@OptoCloud `_. + 7.1.0 - 2020-10-25 ------------------ @@ -223,8 +1342,8 @@ Thanks `@Naios (Denis Blank) `_. -* Made the ``#`` specifier emit trailing zeros in addition to the decimal point - (`#1797 `_). For example +* Made the ``'#'`` specifier emit trailing zeros in addition to the decimal + point (`#1797 `_). For example (`godbolt `__): .. code:: c++ @@ -353,7 +1472,7 @@ `#1912 `_, `#1928 `_, `#1929 `_, - `#1935 `_ + `#1935 `_, `#1937 `_, `#1942 `_, `#1949 `_). diff --git a/Externals/fmt/README.rst b/Externals/fmt/README.rst index acddc70ef1..394f28d97b 100755 --- a/Externals/fmt/README.rst +++ b/Externals/fmt/README.rst @@ -1,10 +1,16 @@ {fmt} ===== -.. image:: https://travis-ci.org/fmtlib/fmt.png?branch=master - :target: https://travis-ci.org/fmtlib/fmt +.. image:: https://github.com/fmtlib/fmt/workflows/linux/badge.svg + :target: https://github.com/fmtlib/fmt/actions?query=workflow%3Alinux -.. image:: https://ci.appveyor.com/api/projects/status/ehjkiefde6gucy1v +.. image:: https://github.com/fmtlib/fmt/workflows/macos/badge.svg + :target: https://github.com/fmtlib/fmt/actions?query=workflow%3Amacos + +.. image:: https://github.com/fmtlib/fmt/workflows/windows/badge.svg + :target: https://github.com/fmtlib/fmt/actions?query=workflow%3Awindows + +.. image:: https://ci.appveyor.com/api/projects/status/ehjkiefde6gucy1v?svg=true :target: https://ci.appveyor.com/project/vitaut/fmt .. image:: https://oss-fuzz-build-logs.storage.googleapis.com/badges/fmt.svg @@ -20,9 +26,9 @@ **{fmt}** is an open-source formatting library providing a fast and safe alternative to C stdio and C++ iostreams. -If you like this project, please consider donating to BYSOL, -an initiative to help victims of political repressions in Belarus: -https://www.facebook.com/donate/759400044849707/108388587646909/. +If you like this project, please consider donating to the BYSOL +Foundation that helps victims of political repressions in Belarus: +https://bysol.org/en/bs/general/. `Documentation `__ @@ -131,16 +137,16 @@ Output:: Output:: - {1, 2, 3} + [1, 2, 3] **Check a format string at compile time** .. code:: c++ - std::string s = fmt::format(FMT_STRING("{:d}"), "don't panic"); + std::string s = fmt::format("{:d}", "I am not a number"); -This gives a compile-time error because ``d`` is an invalid format specifier for -a string. +This gives a compile-time error in C++20 because ``d`` is an invalid format +specifier for a string. **Write a file from a single thread** @@ -199,7 +205,7 @@ The above results were generated by building ``tinyformat_test.cpp`` on macOS best of three runs. In the test, the format string ``"%0.10f:%04d:%+g:%s:%p:%c:%%\n"`` or equivalent is filled 2,000,000 times with output sent to ``/dev/null``; for further details refer to the `source -`_. +`_. {fmt} is up to 20-30x faster than ``std::ostringstream`` and ``sprintf`` on floating-point formatting (`dtoa-benchmark `_) @@ -283,6 +289,13 @@ Then you can run the speed test:: or the bloat test:: $ make bloat-test + +Migrating code +-------------- + +`clang-tidy-fmt `_ provides clang +tidy checks for converting occurrences of ``printf`` and ``fprintf`` to +``fmt::print``. Projects using this library --------------------------- @@ -290,6 +303,8 @@ Projects using this library * `0 A.D. `_: a free, open-source, cross-platform real-time strategy game +* `2GIS `_: free business listings with a city map + * `AMPL/MP `_: an open-source library for mathematical programming @@ -310,7 +325,7 @@ Projects using this library * `ClickHouse `_: analytical database management system -* `CUAUV `_: Cornell University's autonomous underwater +* `CUAUV `_: Cornell University's autonomous underwater vehicle * `Drake `_: a planning, control, and analysis toolbox @@ -321,8 +336,15 @@ Projects using this library * `FiveM `_: a modification framework for GTA V +* `fmtlog `_: a performant fmtlib-style + logging library with latency in nanoseconds + * `Folly `_: Facebook open-source library +* `Grand Mountain Adventure + `_: + A beautiful open-world ski & snowboarding game + * `HarpyWar/pvpgn `_: Player vs Player Gaming Network with tweaks @@ -447,7 +469,7 @@ Boost Format This is a very powerful library which supports both ``printf``-like format strings and positional arguments. Its main drawback is performance. According to -various, benchmarks it is much slower than other methods considered here. Boost +various benchmarks, it is much slower than other methods considered here. Boost Format also has excessive build times and severe code bloat issues (see `Benchmarks`_). diff --git a/Externals/fmt/include/fmt/args.h b/Externals/fmt/include/fmt/args.h new file mode 100644 index 0000000000..9a8e4ed2ce --- /dev/null +++ b/Externals/fmt/include/fmt/args.h @@ -0,0 +1,234 @@ +// Formatting library for C++ - dynamic format arguments +// +// Copyright (c) 2012 - present, Victor Zverovich +// All rights reserved. +// +// For the license information refer to format.h. + +#ifndef FMT_ARGS_H_ +#define FMT_ARGS_H_ + +#include // std::reference_wrapper +#include // std::unique_ptr +#include + +#include "core.h" + +FMT_BEGIN_NAMESPACE + +namespace detail { + +template struct is_reference_wrapper : std::false_type {}; +template +struct is_reference_wrapper> : std::true_type {}; + +template const T& unwrap(const T& v) { return v; } +template const T& unwrap(const std::reference_wrapper& v) { + return static_cast(v); +} + +class dynamic_arg_list { + // Workaround for clang's -Wweak-vtables. Unlike for regular classes, for + // templates it doesn't complain about inability to deduce single translation + // unit for placing vtable. So storage_node_base is made a fake template. + template struct node { + virtual ~node() = default; + std::unique_ptr> next; + }; + + template struct typed_node : node<> { + T value; + + template + FMT_CONSTEXPR typed_node(const Arg& arg) : value(arg) {} + + template + FMT_CONSTEXPR typed_node(const basic_string_view& arg) + : value(arg.data(), arg.size()) {} + }; + + std::unique_ptr> head_; + + public: + template const T& push(const Arg& arg) { + auto new_node = std::unique_ptr>(new typed_node(arg)); + auto& value = new_node->value; + new_node->next = std::move(head_); + head_ = std::move(new_node); + return value; + } +}; +} // namespace detail + +/** + \rst + A dynamic version of `fmt::format_arg_store`. + It's equipped with a storage to potentially temporary objects which lifetimes + could be shorter than the format arguments object. + + It can be implicitly converted into `~fmt::basic_format_args` for passing + into type-erased formatting functions such as `~fmt::vformat`. + \endrst + */ +template +class dynamic_format_arg_store +#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409 + // Workaround a GCC template argument substitution bug. + : public basic_format_args +#endif +{ + private: + using char_type = typename Context::char_type; + + template struct need_copy { + static constexpr detail::type mapped_type = + detail::mapped_type_constant::value; + + enum { + value = !(detail::is_reference_wrapper::value || + std::is_same>::value || + std::is_same>::value || + (mapped_type != detail::type::cstring_type && + mapped_type != detail::type::string_type && + mapped_type != detail::type::custom_type)) + }; + }; + + template + using stored_type = conditional_t::value && + !has_formatter::value && + !detail::is_reference_wrapper::value, + std::basic_string, T>; + + // Storage of basic_format_arg must be contiguous. + std::vector> data_; + std::vector> named_info_; + + // Storage of arguments not fitting into basic_format_arg must grow + // without relocation because items in data_ refer to it. + detail::dynamic_arg_list dynamic_args_; + + friend class basic_format_args; + + unsigned long long get_types() const { + return detail::is_unpacked_bit | data_.size() | + (named_info_.empty() + ? 0ULL + : static_cast(detail::has_named_args_bit)); + } + + const basic_format_arg* data() const { + return named_info_.empty() ? data_.data() : data_.data() + 1; + } + + template void emplace_arg(const T& arg) { + data_.emplace_back(detail::make_arg(arg)); + } + + template + void emplace_arg(const detail::named_arg& arg) { + if (named_info_.empty()) { + constexpr const detail::named_arg_info* zero_ptr{nullptr}; + data_.insert(data_.begin(), {zero_ptr, 0}); + } + data_.emplace_back(detail::make_arg(detail::unwrap(arg.value))); + auto pop_one = [](std::vector>* data) { + data->pop_back(); + }; + std::unique_ptr>, decltype(pop_one)> + guard{&data_, pop_one}; + named_info_.push_back({arg.name, static_cast(data_.size() - 2u)}); + data_[0].value_.named_args = {named_info_.data(), named_info_.size()}; + guard.release(); + } + + public: + constexpr dynamic_format_arg_store() = default; + + /** + \rst + Adds an argument into the dynamic store for later passing to a formatting + function. + + Note that custom types and string types (but not string views) are copied + into the store dynamically allocating memory if necessary. + + **Example**:: + + fmt::dynamic_format_arg_store store; + store.push_back(42); + store.push_back("abc"); + store.push_back(1.5f); + std::string result = fmt::vformat("{} and {} and {}", store); + \endrst + */ + template void push_back(const T& arg) { + if (detail::const_check(need_copy::value)) + emplace_arg(dynamic_args_.push>(arg)); + else + emplace_arg(detail::unwrap(arg)); + } + + /** + \rst + Adds a reference to the argument into the dynamic store for later passing to + a formatting function. + + **Example**:: + + fmt::dynamic_format_arg_store store; + char band[] = "Rolling Stones"; + store.push_back(std::cref(band)); + band[9] = 'c'; // Changing str affects the output. + std::string result = fmt::vformat("{}", store); + // result == "Rolling Scones" + \endrst + */ + template void push_back(std::reference_wrapper arg) { + static_assert( + need_copy::value, + "objects of built-in types and string views are always copied"); + emplace_arg(arg.get()); + } + + /** + Adds named argument into the dynamic store for later passing to a formatting + function. ``std::reference_wrapper`` is supported to avoid copying of the + argument. The name is always copied into the store. + */ + template + void push_back(const detail::named_arg& arg) { + const char_type* arg_name = + dynamic_args_.push>(arg.name).c_str(); + if (detail::const_check(need_copy::value)) { + emplace_arg( + fmt::arg(arg_name, dynamic_args_.push>(arg.value))); + } else { + emplace_arg(fmt::arg(arg_name, arg.value)); + } + } + + /** Erase all elements from the store */ + void clear() { + data_.clear(); + named_info_.clear(); + dynamic_args_ = detail::dynamic_arg_list(); + } + + /** + \rst + Reserves space to store at least *new_cap* arguments including + *new_cap_named* named arguments. + \endrst + */ + void reserve(size_t new_cap, size_t new_cap_named) { + FMT_ASSERT(new_cap >= new_cap_named, + "Set of arguments includes set of named arguments"); + data_.reserve(new_cap); + named_info_.reserve(new_cap_named); + } +}; + +FMT_END_NAMESPACE + +#endif // FMT_ARGS_H_ diff --git a/Externals/fmt/include/fmt/chrono.h b/Externals/fmt/include/fmt/chrono.h index 1a3b8d5e5c..682efd8d21 100755 --- a/Externals/fmt/include/fmt/chrono.h +++ b/Externals/fmt/include/fmt/chrono.h @@ -8,16 +8,32 @@ #ifndef FMT_CHRONO_H_ #define FMT_CHRONO_H_ +#include #include #include +#include #include -#include +#include +#include #include "format.h" -#include "locale.h" FMT_BEGIN_NAMESPACE +// Enable tzset. +#ifndef FMT_USE_TZSET +// UWP doesn't provide _tzset. +# if FMT_HAS_INCLUDE("winapifamily.h") +# include +# endif +# if defined(_WIN32) && (!defined(WINAPI_FAMILY) || \ + (WINAPI_FAMILY == WINAPI_FAMILY_DESKTOP_APP)) +# define FMT_USE_TZSET 1 +# else +# define FMT_USE_TZSET 0 +# endif +#endif + // Enable safe chrono durations, unless explicitly disabled. #ifndef FMT_SAFE_DURATION_CAST # define FMT_SAFE_DURATION_CAST 1 @@ -44,7 +60,7 @@ FMT_CONSTEXPR To lossless_integral_conversion(const From from, int& ec) { static_assert(T::is_integer, "To must be integral"); // A and B are both signed, or both unsigned. - if (F::digits <= T::digits) { + if (detail::const_check(F::digits <= T::digits)) { // From fits in To without any problem. } else { // From does not always fit in To, resort to a dynamic check. @@ -79,14 +95,15 @@ FMT_CONSTEXPR To lossless_integral_conversion(const From from, int& ec) { return {}; } // From is positive. Can it always fit in To? - if (F::digits > T::digits && + if (detail::const_check(F::digits > T::digits) && from > static_cast(detail::max_value())) { ec = 1; return {}; } } - if (!F::is_signed && T::is_signed && F::digits >= T::digits && + if (detail::const_check(!F::is_signed && T::is_signed && + F::digits >= T::digits) && from > static_cast(detail::max_value())) { ec = 1; return {}; @@ -243,7 +260,7 @@ To safe_duration_cast(std::chrono::duration from, } // multiply with Factor::num without overflow or underflow - if (Factor::num != 1) { + if (detail::const_check(Factor::num != 1)) { constexpr auto max1 = detail::max_value() / static_cast(Factor::num); if (count > max1) { @@ -260,7 +277,7 @@ To safe_duration_cast(std::chrono::duration from, } // this can't go wrong, right? den>0 is checked earlier. - if (Factor::den != 1) { + if (detail::const_check(Factor::den != 1)) { using common_t = typename std::common_type::type; count /= static_cast(Factor::den); } @@ -282,13 +299,154 @@ To safe_duration_cast(std::chrono::duration from, #define FMT_NOMACRO namespace detail { +template struct null {}; inline null<> localtime_r FMT_NOMACRO(...) { return null<>(); } inline null<> localtime_s(...) { return null<>(); } inline null<> gmtime_r(...) { return null<>(); } inline null<> gmtime_s(...) { return null<>(); } + +inline const std::locale& get_classic_locale() { + static const auto& locale = std::locale::classic(); + return locale; +} + +template struct codecvt_result { + static constexpr const size_t max_size = 32; + CodeUnit buf[max_size]; + CodeUnit* end; +}; +template +constexpr const size_t codecvt_result::max_size; + +template +void write_codecvt(codecvt_result& out, string_view in_buf, + const std::locale& loc) { + using codecvt = std::codecvt; +#if FMT_CLANG_VERSION +# pragma clang diagnostic push +# pragma clang diagnostic ignored "-Wdeprecated" + auto& f = std::use_facet(loc); +# pragma clang diagnostic pop +#else + auto& f = std::use_facet(loc); +#endif + auto mb = std::mbstate_t(); + const char* from_next = nullptr; + auto result = f.in(mb, in_buf.begin(), in_buf.end(), from_next, + std::begin(out.buf), std::end(out.buf), out.end); + if (result != std::codecvt_base::ok) + FMT_THROW(format_error("failed to format time")); +} + +template +auto write_encoded_tm_str(OutputIt out, string_view in, const std::locale& loc) + -> OutputIt { + if (detail::is_utf8() && loc != get_classic_locale()) { + // char16_t and char32_t codecvts are broken in MSVC (linkage errors) and + // gcc-4. +#if FMT_MSC_VER != 0 || \ + (defined(__GLIBCXX__) && !defined(_GLIBCXX_USE_DUAL_ABI)) + // The _GLIBCXX_USE_DUAL_ABI macro is always defined in libstdc++ from gcc-5 + // and newer. + using code_unit = wchar_t; +#else + using code_unit = char32_t; +#endif + + using unit_t = codecvt_result; + unit_t unit; + write_codecvt(unit, in, loc); + // In UTF-8 is used one to four one-byte code units. + auto&& buf = basic_memory_buffer(); + for (code_unit* p = unit.buf; p != unit.end; ++p) { + uint32_t c = static_cast(*p); + if (sizeof(code_unit) == 2 && c >= 0xd800 && c <= 0xdfff) { + // surrogate pair + ++p; + if (p == unit.end || (c & 0xfc00) != 0xd800 || + (*p & 0xfc00) != 0xdc00) { + FMT_THROW(format_error("failed to format time")); + } + c = (c << 10) + static_cast(*p) - 0x35fdc00; + } + if (c < 0x80) { + buf.push_back(static_cast(c)); + } else if (c < 0x800) { + buf.push_back(static_cast(0xc0 | (c >> 6))); + buf.push_back(static_cast(0x80 | (c & 0x3f))); + } else if ((c >= 0x800 && c <= 0xd7ff) || (c >= 0xe000 && c <= 0xffff)) { + buf.push_back(static_cast(0xe0 | (c >> 12))); + buf.push_back(static_cast(0x80 | ((c & 0xfff) >> 6))); + buf.push_back(static_cast(0x80 | (c & 0x3f))); + } else if (c >= 0x10000 && c <= 0x10ffff) { + buf.push_back(static_cast(0xf0 | (c >> 18))); + buf.push_back(static_cast(0x80 | ((c & 0x3ffff) >> 12))); + buf.push_back(static_cast(0x80 | ((c & 0xfff) >> 6))); + buf.push_back(static_cast(0x80 | (c & 0x3f))); + } else { + FMT_THROW(format_error("failed to format time")); + } + } + return copy_str(buf.data(), buf.data() + buf.size(), out); + } + return copy_str(in.data(), in.data() + in.size(), out); +} + +template ::value)> +auto write_tm_str(OutputIt out, string_view sv, const std::locale& loc) + -> OutputIt { + codecvt_result unit; + write_codecvt(unit, sv, loc); + return copy_str(unit.buf, unit.end, out); +} + +template ::value)> +auto write_tm_str(OutputIt out, string_view sv, const std::locale& loc) + -> OutputIt { + return write_encoded_tm_str(out, sv, loc); +} + +template +inline void do_write(buffer& buf, const std::tm& time, + const std::locale& loc, char format, char modifier) { + auto&& format_buf = formatbuf>(buf); + auto&& os = std::basic_ostream(&format_buf); + os.imbue(loc); + using iterator = std::ostreambuf_iterator; + const auto& facet = std::use_facet>(loc); + auto end = facet.put(os, os, Char(' '), &time, format, modifier); + if (end.failed()) FMT_THROW(format_error("failed to format time")); +} + +template ::value)> +auto write(OutputIt out, const std::tm& time, const std::locale& loc, + char format, char modifier = 0) -> OutputIt { + auto&& buf = get_buffer(out); + do_write(buf, time, loc, format, modifier); + return buf.out(); +} + +template ::value)> +auto write(OutputIt out, const std::tm& time, const std::locale& loc, + char format, char modifier = 0) -> OutputIt { + auto&& buf = basic_memory_buffer(); + do_write(buf, time, loc, format, modifier); + return write_encoded_tm_str(out, string_view(buf.data(), buf.size()), loc); +} + } // namespace detail -// Thread-safe replacement for std::localtime +FMT_MODULE_EXPORT_BEGIN + +/** + Converts given time since epoch as ``std::time_t`` value into calendar time, + expressed in local time. Unlike ``std::localtime``, this function is + thread-safe on most platforms. + */ inline std::tm localtime(std::time_t time) { struct dispatcher { std::time_t time_; @@ -330,7 +488,11 @@ inline std::tm localtime( return localtime(std::chrono::system_clock::to_time_t(time_point)); } -// Thread-safe replacement for std::gmtime +/** + Converts given time since epoch as ``std::time_t`` value into calendar time, + expressed in Coordinated Universal Time (UTC). Unlike ``std::gmtime``, this + function is thread-safe on most platforms. + */ inline std::tm gmtime(std::time_t time) { struct dispatcher { std::time_t time_; @@ -371,96 +533,64 @@ inline std::tm gmtime( return gmtime(std::chrono::system_clock::to_time_t(time_point)); } -namespace detail { -inline size_t strftime(char* str, size_t count, const char* format, - const std::tm* time) { - return std::strftime(str, count, format, time); +FMT_BEGIN_DETAIL_NAMESPACE + +// Writes two-digit numbers a, b and c separated by sep to buf. +// The method by Pavel Novikov based on +// https://johnnylee-sde.github.io/Fast-unsigned-integer-to-time-string/. +inline void write_digit2_separated(char* buf, unsigned a, unsigned b, + unsigned c, char sep) { + unsigned long long digits = + a | (b << 24) | (static_cast(c) << 48); + // Convert each value to BCD. + // We have x = a * 10 + b and we want to convert it to BCD y = a * 16 + b. + // The difference is + // y - x = a * 6 + // a can be found from x: + // a = floor(x / 10) + // then + // y = x + a * 6 = x + floor(x / 10) * 6 + // floor(x / 10) is (x * 205) >> 11 (needs 16 bits). + digits += (((digits * 205) >> 11) & 0x000f00000f00000f) * 6; + // Put low nibbles to high bytes and high nibbles to low bytes. + digits = ((digits & 0x00f00000f00000f0) >> 4) | + ((digits & 0x000f00000f00000f) << 8); + auto usep = static_cast(sep); + // Add ASCII '0' to each digit byte and insert separators. + digits |= 0x3030003030003030 | (usep << 16) | (usep << 40); + + constexpr const size_t len = 8; + if (const_check(is_big_endian())) { + char tmp[len]; + memcpy(tmp, &digits, len); + std::reverse_copy(tmp, tmp + len, buf); + } else { + memcpy(buf, &digits, len); + } } -inline size_t strftime(wchar_t* str, size_t count, const wchar_t* format, - const std::tm* time) { - return std::wcsftime(str, count, format, time); -} -} // namespace detail - -template -struct formatter, Char> - : formatter { - template - auto format(std::chrono::time_point val, - FormatContext& ctx) -> decltype(ctx.out()) { - std::tm time = localtime(val); - return formatter::format(time, ctx); - } -}; - -template struct formatter { - template - auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { - auto it = ctx.begin(); - if (it != ctx.end() && *it == ':') ++it; - auto end = it; - while (end != ctx.end() && *end != '}') ++end; - tm_format.reserve(detail::to_unsigned(end - it + 1)); - tm_format.append(it, end); - tm_format.push_back('\0'); - return end; - } - - template - auto format(const std::tm& tm, FormatContext& ctx) -> decltype(ctx.out()) { - basic_memory_buffer buf; - size_t start = buf.size(); - for (;;) { - size_t size = buf.capacity() - start; - size_t count = detail::strftime(&buf[start], size, &tm_format[0], &tm); - if (count != 0) { - buf.resize(start + count); - break; - } - if (size >= tm_format.size() * 256) { - // If the buffer is 256 times larger than the format string, assume - // that `strftime` gives an empty result. There doesn't seem to be a - // better way to distinguish the two cases: - // https://github.com/fmtlib/fmt/issues/367 - break; - } - const size_t MIN_GROWTH = 10; - buf.reserve(buf.capacity() + (size > MIN_GROWTH ? size : MIN_GROWTH)); - } - return std::copy(buf.begin(), buf.end(), ctx.out()); - } - - basic_memory_buffer tm_format; -}; - -namespace detail { -template FMT_CONSTEXPR const char* get_units() { +template FMT_CONSTEXPR inline const char* get_units() { + if (std::is_same::value) return "as"; + if (std::is_same::value) return "fs"; + if (std::is_same::value) return "ps"; + if (std::is_same::value) return "ns"; + if (std::is_same::value) return "µs"; + if (std::is_same::value) return "ms"; + if (std::is_same::value) return "cs"; + if (std::is_same::value) return "ds"; + if (std::is_same>::value) return "s"; + if (std::is_same::value) return "das"; + if (std::is_same::value) return "hs"; + if (std::is_same::value) return "ks"; + if (std::is_same::value) return "Ms"; + if (std::is_same::value) return "Gs"; + if (std::is_same::value) return "Ts"; + if (std::is_same::value) return "Ps"; + if (std::is_same::value) return "Es"; + if (std::is_same>::value) return "m"; + if (std::is_same>::value) return "h"; return nullptr; } -template <> FMT_CONSTEXPR const char* get_units() { return "as"; } -template <> FMT_CONSTEXPR const char* get_units() { return "fs"; } -template <> FMT_CONSTEXPR const char* get_units() { return "ps"; } -template <> FMT_CONSTEXPR const char* get_units() { return "ns"; } -template <> FMT_CONSTEXPR const char* get_units() { return "µs"; } -template <> FMT_CONSTEXPR const char* get_units() { return "ms"; } -template <> FMT_CONSTEXPR const char* get_units() { return "cs"; } -template <> FMT_CONSTEXPR const char* get_units() { return "ds"; } -template <> FMT_CONSTEXPR const char* get_units>() { return "s"; } -template <> FMT_CONSTEXPR const char* get_units() { return "das"; } -template <> FMT_CONSTEXPR const char* get_units() { return "hs"; } -template <> FMT_CONSTEXPR const char* get_units() { return "ks"; } -template <> FMT_CONSTEXPR const char* get_units() { return "Ms"; } -template <> FMT_CONSTEXPR const char* get_units() { return "Gs"; } -template <> FMT_CONSTEXPR const char* get_units() { return "Ts"; } -template <> FMT_CONSTEXPR const char* get_units() { return "Ps"; } -template <> FMT_CONSTEXPR const char* get_units() { return "Es"; } -template <> FMT_CONSTEXPR const char* get_units>() { - return "m"; -} -template <> FMT_CONSTEXPR const char* get_units>() { - return "h"; -} enum class numeric_system { standard, @@ -499,6 +629,22 @@ FMT_CONSTEXPR const Char* parse_chrono_format(const Char* begin, handler.on_text(tab, tab + 1); break; } + // Year: + case 'Y': + handler.on_year(numeric_system::standard); + break; + case 'y': + handler.on_short_year(numeric_system::standard); + break; + case 'C': + handler.on_century(numeric_system::standard); + break; + case 'G': + handler.on_iso_week_based_year(); + break; + case 'g': + handler.on_iso_week_based_short_year(); + break; // Day of the week: case 'a': handler.on_abbr_weekday(); @@ -514,11 +660,34 @@ FMT_CONSTEXPR const Char* parse_chrono_format(const Char* begin, break; // Month: case 'b': + case 'h': handler.on_abbr_month(); break; case 'B': handler.on_full_month(); break; + case 'm': + handler.on_dec_month(numeric_system::standard); + break; + // Day of the year/month: + case 'U': + handler.on_dec0_week_of_year(numeric_system::standard); + break; + case 'W': + handler.on_dec1_week_of_year(numeric_system::standard); + break; + case 'V': + handler.on_iso_week_of_year(numeric_system::standard); + break; + case 'j': + handler.on_day_of_year(); + break; + case 'd': + handler.on_day_of_month(numeric_system::standard); + break; + case 'e': + handler.on_day_of_month_space(numeric_system::standard); + break; // Hour, minute, second: case 'H': handler.on_24_hour(numeric_system::standard); @@ -577,6 +746,15 @@ FMT_CONSTEXPR const Char* parse_chrono_format(const Char* begin, if (ptr == end) FMT_THROW(format_error("invalid format")); c = *ptr++; switch (c) { + case 'Y': + handler.on_year(numeric_system::alternative); + break; + case 'y': + handler.on_offset_year(); + break; + case 'C': + handler.on_century(numeric_system::alternative); + break; case 'c': handler.on_datetime(numeric_system::alternative); break; @@ -595,6 +773,27 @@ FMT_CONSTEXPR const Char* parse_chrono_format(const Char* begin, if (ptr == end) FMT_THROW(format_error("invalid format")); c = *ptr++; switch (c) { + case 'y': + handler.on_short_year(numeric_system::alternative); + break; + case 'm': + handler.on_dec_month(numeric_system::alternative); + break; + case 'U': + handler.on_dec0_week_of_year(numeric_system::alternative); + break; + case 'W': + handler.on_dec1_week_of_year(numeric_system::alternative); + break; + case 'V': + handler.on_iso_week_of_year(numeric_system::alternative); + break; + case 'd': + handler.on_day_of_month(numeric_system::alternative); + break; + case 'e': + handler.on_day_of_month_space(numeric_system::alternative); + break; case 'w': handler.on_dec0_weekday(numeric_system::alternative); break; @@ -626,33 +825,566 @@ FMT_CONSTEXPR const Char* parse_chrono_format(const Char* begin, return ptr; } -struct chrono_format_checker { - FMT_NORETURN void report_no_date() { FMT_THROW(format_error("no date")); } +template struct null_chrono_spec_handler { + FMT_CONSTEXPR void unsupported() { + static_cast(this)->unsupported(); + } + FMT_CONSTEXPR void on_year(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_short_year(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_offset_year() { unsupported(); } + FMT_CONSTEXPR void on_century(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_iso_week_based_year() { unsupported(); } + FMT_CONSTEXPR void on_iso_week_based_short_year() { unsupported(); } + FMT_CONSTEXPR void on_abbr_weekday() { unsupported(); } + FMT_CONSTEXPR void on_full_weekday() { unsupported(); } + FMT_CONSTEXPR void on_dec0_weekday(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_dec1_weekday(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_abbr_month() { unsupported(); } + FMT_CONSTEXPR void on_full_month() { unsupported(); } + FMT_CONSTEXPR void on_dec_month(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_dec0_week_of_year(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_dec1_week_of_year(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_iso_week_of_year(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_day_of_year() { unsupported(); } + FMT_CONSTEXPR void on_day_of_month(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_day_of_month_space(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_24_hour(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_12_hour(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_minute(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_second(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_datetime(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_loc_date(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_loc_time(numeric_system) { unsupported(); } + FMT_CONSTEXPR void on_us_date() { unsupported(); } + FMT_CONSTEXPR void on_iso_date() { unsupported(); } + FMT_CONSTEXPR void on_12_hour_time() { unsupported(); } + FMT_CONSTEXPR void on_24_hour_time() { unsupported(); } + FMT_CONSTEXPR void on_iso_time() { unsupported(); } + FMT_CONSTEXPR void on_am_pm() { unsupported(); } + FMT_CONSTEXPR void on_duration_value() { unsupported(); } + FMT_CONSTEXPR void on_duration_unit() { unsupported(); } + FMT_CONSTEXPR void on_utc_offset() { unsupported(); } + FMT_CONSTEXPR void on_tz_name() { unsupported(); } +}; - template void on_text(const Char*, const Char*) {} - FMT_NORETURN void on_abbr_weekday() { report_no_date(); } - FMT_NORETURN void on_full_weekday() { report_no_date(); } - FMT_NORETURN void on_dec0_weekday(numeric_system) { report_no_date(); } - FMT_NORETURN void on_dec1_weekday(numeric_system) { report_no_date(); } - FMT_NORETURN void on_abbr_month() { report_no_date(); } - FMT_NORETURN void on_full_month() { report_no_date(); } - void on_24_hour(numeric_system) {} - void on_12_hour(numeric_system) {} - void on_minute(numeric_system) {} - void on_second(numeric_system) {} - FMT_NORETURN void on_datetime(numeric_system) { report_no_date(); } - FMT_NORETURN void on_loc_date(numeric_system) { report_no_date(); } - FMT_NORETURN void on_loc_time(numeric_system) { report_no_date(); } - FMT_NORETURN void on_us_date() { report_no_date(); } - FMT_NORETURN void on_iso_date() { report_no_date(); } - void on_12_hour_time() {} - void on_24_hour_time() {} - void on_iso_time() {} - void on_am_pm() {} +struct tm_format_checker : null_chrono_spec_handler { + FMT_NORETURN void unsupported() { FMT_THROW(format_error("no format")); } + + template + FMT_CONSTEXPR void on_text(const Char*, const Char*) {} + FMT_CONSTEXPR void on_year(numeric_system) {} + FMT_CONSTEXPR void on_short_year(numeric_system) {} + FMT_CONSTEXPR void on_offset_year() {} + FMT_CONSTEXPR void on_century(numeric_system) {} + FMT_CONSTEXPR void on_iso_week_based_year() {} + FMT_CONSTEXPR void on_iso_week_based_short_year() {} + FMT_CONSTEXPR void on_abbr_weekday() {} + FMT_CONSTEXPR void on_full_weekday() {} + FMT_CONSTEXPR void on_dec0_weekday(numeric_system) {} + FMT_CONSTEXPR void on_dec1_weekday(numeric_system) {} + FMT_CONSTEXPR void on_abbr_month() {} + FMT_CONSTEXPR void on_full_month() {} + FMT_CONSTEXPR void on_dec_month(numeric_system) {} + FMT_CONSTEXPR void on_dec0_week_of_year(numeric_system) {} + FMT_CONSTEXPR void on_dec1_week_of_year(numeric_system) {} + FMT_CONSTEXPR void on_iso_week_of_year(numeric_system) {} + FMT_CONSTEXPR void on_day_of_year() {} + FMT_CONSTEXPR void on_day_of_month(numeric_system) {} + FMT_CONSTEXPR void on_day_of_month_space(numeric_system) {} + FMT_CONSTEXPR void on_24_hour(numeric_system) {} + FMT_CONSTEXPR void on_12_hour(numeric_system) {} + FMT_CONSTEXPR void on_minute(numeric_system) {} + FMT_CONSTEXPR void on_second(numeric_system) {} + FMT_CONSTEXPR void on_datetime(numeric_system) {} + FMT_CONSTEXPR void on_loc_date(numeric_system) {} + FMT_CONSTEXPR void on_loc_time(numeric_system) {} + FMT_CONSTEXPR void on_us_date() {} + FMT_CONSTEXPR void on_iso_date() {} + FMT_CONSTEXPR void on_12_hour_time() {} + FMT_CONSTEXPR void on_24_hour_time() {} + FMT_CONSTEXPR void on_iso_time() {} + FMT_CONSTEXPR void on_am_pm() {} + FMT_CONSTEXPR void on_utc_offset() {} + FMT_CONSTEXPR void on_tz_name() {} +}; + +inline const char* tm_wday_full_name(int wday) { + static constexpr const char* full_name_list[] = { + "Sunday", "Monday", "Tuesday", "Wednesday", + "Thursday", "Friday", "Saturday"}; + return wday >= 0 && wday <= 6 ? full_name_list[wday] : "?"; +} +inline const char* tm_wday_short_name(int wday) { + static constexpr const char* short_name_list[] = {"Sun", "Mon", "Tue", "Wed", + "Thu", "Fri", "Sat"}; + return wday >= 0 && wday <= 6 ? short_name_list[wday] : "???"; +} + +inline const char* tm_mon_full_name(int mon) { + static constexpr const char* full_name_list[] = { + "January", "February", "March", "April", "May", "June", + "July", "August", "September", "October", "November", "December"}; + return mon >= 0 && mon <= 11 ? full_name_list[mon] : "?"; +} +inline const char* tm_mon_short_name(int mon) { + static constexpr const char* short_name_list[] = { + "Jan", "Feb", "Mar", "Apr", "May", "Jun", + "Jul", "Aug", "Sep", "Oct", "Nov", "Dec", + }; + return mon >= 0 && mon <= 11 ? short_name_list[mon] : "???"; +} + +template +struct has_member_data_tm_gmtoff : std::false_type {}; +template +struct has_member_data_tm_gmtoff> + : std::true_type {}; + +template +struct has_member_data_tm_zone : std::false_type {}; +template +struct has_member_data_tm_zone> + : std::true_type {}; + +#if FMT_USE_TZSET +inline void tzset_once() { + static bool init = []() -> bool { + _tzset(); + return true; + }(); + ignore_unused(init); +} +#endif + +template class tm_writer { + private: + static constexpr int days_per_week = 7; + + const std::locale& loc_; + const bool is_classic_; + OutputIt out_; + const std::tm& tm_; + + auto tm_sec() const noexcept -> int { + FMT_ASSERT(tm_.tm_sec >= 0 && tm_.tm_sec <= 61, ""); + return tm_.tm_sec; + } + auto tm_min() const noexcept -> int { + FMT_ASSERT(tm_.tm_min >= 0 && tm_.tm_min <= 59, ""); + return tm_.tm_min; + } + auto tm_hour() const noexcept -> int { + FMT_ASSERT(tm_.tm_hour >= 0 && tm_.tm_hour <= 23, ""); + return tm_.tm_hour; + } + auto tm_mday() const noexcept -> int { + FMT_ASSERT(tm_.tm_mday >= 1 && tm_.tm_mday <= 31, ""); + return tm_.tm_mday; + } + auto tm_mon() const noexcept -> int { + FMT_ASSERT(tm_.tm_mon >= 0 && tm_.tm_mon <= 11, ""); + return tm_.tm_mon; + } + auto tm_year() const noexcept -> long long { return 1900ll + tm_.tm_year; } + auto tm_wday() const noexcept -> int { + FMT_ASSERT(tm_.tm_wday >= 0 && tm_.tm_wday <= 6, ""); + return tm_.tm_wday; + } + auto tm_yday() const noexcept -> int { + FMT_ASSERT(tm_.tm_yday >= 0 && tm_.tm_yday <= 365, ""); + return tm_.tm_yday; + } + + auto tm_hour12() const noexcept -> int { + const auto h = tm_hour(); + const auto z = h < 12 ? h : h - 12; + return z == 0 ? 12 : z; + } + + // POSIX and the C Standard are unclear or inconsistent about what %C and %y + // do if the year is negative or exceeds 9999. Use the convention that %C + // concatenated with %y yields the same output as %Y, and that %Y contains at + // least 4 characters, with more only if necessary. + auto split_year_lower(long long year) const noexcept -> int { + auto l = year % 100; + if (l < 0) l = -l; // l in [0, 99] + return static_cast(l); + } + + // Algorithm: + // https://en.wikipedia.org/wiki/ISO_week_date#Calculating_the_week_number_from_a_month_and_day_of_the_month_or_ordinal_date + auto iso_year_weeks(long long curr_year) const noexcept -> int { + const auto prev_year = curr_year - 1; + const auto curr_p = + (curr_year + curr_year / 4 - curr_year / 100 + curr_year / 400) % + days_per_week; + const auto prev_p = + (prev_year + prev_year / 4 - prev_year / 100 + prev_year / 400) % + days_per_week; + return 52 + ((curr_p == 4 || prev_p == 3) ? 1 : 0); + } + auto iso_week_num(int tm_yday, int tm_wday) const noexcept -> int { + return (tm_yday + 11 - (tm_wday == 0 ? days_per_week : tm_wday)) / + days_per_week; + } + auto tm_iso_week_year() const noexcept -> long long { + const auto year = tm_year(); + const auto w = iso_week_num(tm_yday(), tm_wday()); + if (w < 1) return year - 1; + if (w > iso_year_weeks(year)) return year + 1; + return year; + } + auto tm_iso_week_of_year() const noexcept -> int { + const auto year = tm_year(); + const auto w = iso_week_num(tm_yday(), tm_wday()); + if (w < 1) return iso_year_weeks(year - 1); + if (w > iso_year_weeks(year)) return 1; + return w; + } + + void write1(int value) { + *out_++ = static_cast('0' + to_unsigned(value) % 10); + } + void write2(int value) { + const char* d = digits2(to_unsigned(value) % 100); + *out_++ = *d++; + *out_++ = *d; + } + + void write_year_extended(long long year) { + // At least 4 characters. + int width = 4; + if (year < 0) { + *out_++ = '-'; + year = 0 - year; + --width; + } + uint32_or_64_or_128_t n = to_unsigned(year); + const int num_digits = count_digits(n); + if (width > num_digits) out_ = std::fill_n(out_, width - num_digits, '0'); + out_ = format_decimal(out_, n, num_digits).end; + } + void write_year(long long year) { + if (year >= 0 && year < 10000) { + write2(static_cast(year / 100)); + write2(static_cast(year % 100)); + } else { + write_year_extended(year); + } + } + + void write_utc_offset(long offset) { + if (offset < 0) { + *out_++ = '-'; + offset = -offset; + } else { + *out_++ = '+'; + } + offset /= 60; + write2(static_cast(offset / 60)); + write2(static_cast(offset % 60)); + } + template ::value)> + void format_utc_offset_impl(const T& tm) { + write_utc_offset(tm.tm_gmtoff); + } + template ::value)> + void format_utc_offset_impl(const T& tm) { +#if defined(_WIN32) && defined(_UCRT) +# if FMT_USE_TZSET + tzset_once(); +# endif + long offset = 0; + _get_timezone(&offset); + if (tm.tm_isdst) { + long dstbias = 0; + _get_dstbias(&dstbias); + offset += dstbias; + } + write_utc_offset(-offset); +#else + ignore_unused(tm); + format_localized('z'); +#endif + } + + template ::value)> + void format_tz_name_impl(const T& tm) { + if (is_classic_) + out_ = write_tm_str(out_, tm.tm_zone, loc_); + else + format_localized('Z'); + } + template ::value)> + void format_tz_name_impl(const T&) { + format_localized('Z'); + } + + void format_localized(char format, char modifier = 0) { + out_ = write(out_, tm_, loc_, format, modifier); + } + + public: + tm_writer(const std::locale& loc, OutputIt out, const std::tm& tm) + : loc_(loc), + is_classic_(loc_ == get_classic_locale()), + out_(out), + tm_(tm) {} + + OutputIt out() const { return out_; } + + FMT_CONSTEXPR void on_text(const Char* begin, const Char* end) { + out_ = copy_str(begin, end, out_); + } + + void on_abbr_weekday() { + if (is_classic_) + out_ = write(out_, tm_wday_short_name(tm_wday())); + else + format_localized('a'); + } + void on_full_weekday() { + if (is_classic_) + out_ = write(out_, tm_wday_full_name(tm_wday())); + else + format_localized('A'); + } + void on_dec0_weekday(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) return write1(tm_wday()); + format_localized('w', 'O'); + } + void on_dec1_weekday(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) { + auto wday = tm_wday(); + write1(wday == 0 ? days_per_week : wday); + } else { + format_localized('u', 'O'); + } + } + + void on_abbr_month() { + if (is_classic_) + out_ = write(out_, tm_mon_short_name(tm_mon())); + else + format_localized('b'); + } + void on_full_month() { + if (is_classic_) + out_ = write(out_, tm_mon_full_name(tm_mon())); + else + format_localized('B'); + } + + void on_datetime(numeric_system ns) { + if (is_classic_) { + on_abbr_weekday(); + *out_++ = ' '; + on_abbr_month(); + *out_++ = ' '; + on_day_of_month_space(numeric_system::standard); + *out_++ = ' '; + on_iso_time(); + *out_++ = ' '; + on_year(numeric_system::standard); + } else { + format_localized('c', ns == numeric_system::standard ? '\0' : 'E'); + } + } + void on_loc_date(numeric_system ns) { + if (is_classic_) + on_us_date(); + else + format_localized('x', ns == numeric_system::standard ? '\0' : 'E'); + } + void on_loc_time(numeric_system ns) { + if (is_classic_) + on_iso_time(); + else + format_localized('X', ns == numeric_system::standard ? '\0' : 'E'); + } + void on_us_date() { + char buf[8]; + write_digit2_separated(buf, to_unsigned(tm_mon() + 1), + to_unsigned(tm_mday()), + to_unsigned(split_year_lower(tm_year())), '/'); + out_ = copy_str(std::begin(buf), std::end(buf), out_); + } + void on_iso_date() { + auto year = tm_year(); + char buf[10]; + size_t offset = 0; + if (year >= 0 && year < 10000) { + copy2(buf, digits2(to_unsigned(year / 100))); + } else { + offset = 4; + write_year_extended(year); + year = 0; + } + write_digit2_separated(buf + 2, static_cast(year % 100), + to_unsigned(tm_mon() + 1), to_unsigned(tm_mday()), + '-'); + out_ = copy_str(std::begin(buf) + offset, std::end(buf), out_); + } + + void on_utc_offset() { format_utc_offset_impl(tm_); } + void on_tz_name() { format_tz_name_impl(tm_); } + + void on_year(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) + return write_year(tm_year()); + format_localized('Y', 'E'); + } + void on_short_year(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) + return write2(split_year_lower(tm_year())); + format_localized('y', 'O'); + } + void on_offset_year() { + if (is_classic_) return write2(split_year_lower(tm_year())); + format_localized('y', 'E'); + } + + void on_century(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) { + auto year = tm_year(); + auto upper = year / 100; + if (year >= -99 && year < 0) { + // Zero upper on negative year. + *out_++ = '-'; + *out_++ = '0'; + } else if (upper >= 0 && upper < 100) { + write2(static_cast(upper)); + } else { + out_ = write(out_, upper); + } + } else { + format_localized('C', 'E'); + } + } + + void on_dec_month(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) + return write2(tm_mon() + 1); + format_localized('m', 'O'); + } + + void on_dec0_week_of_year(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) + return write2((tm_yday() + days_per_week - tm_wday()) / days_per_week); + format_localized('U', 'O'); + } + void on_dec1_week_of_year(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) { + auto wday = tm_wday(); + write2((tm_yday() + days_per_week - + (wday == 0 ? (days_per_week - 1) : (wday - 1))) / + days_per_week); + } else { + format_localized('W', 'O'); + } + } + void on_iso_week_of_year(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) + return write2(tm_iso_week_of_year()); + format_localized('V', 'O'); + } + + void on_iso_week_based_year() { write_year(tm_iso_week_year()); } + void on_iso_week_based_short_year() { + write2(split_year_lower(tm_iso_week_year())); + } + + void on_day_of_year() { + auto yday = tm_yday() + 1; + write1(yday / 100); + write2(yday % 100); + } + void on_day_of_month(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) return write2(tm_mday()); + format_localized('d', 'O'); + } + void on_day_of_month_space(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) { + auto mday = to_unsigned(tm_mday()) % 100; + const char* d2 = digits2(mday); + *out_++ = mday < 10 ? ' ' : d2[0]; + *out_++ = d2[1]; + } else { + format_localized('e', 'O'); + } + } + + void on_24_hour(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) return write2(tm_hour()); + format_localized('H', 'O'); + } + void on_12_hour(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) + return write2(tm_hour12()); + format_localized('I', 'O'); + } + void on_minute(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) return write2(tm_min()); + format_localized('M', 'O'); + } + void on_second(numeric_system ns) { + if (is_classic_ || ns == numeric_system::standard) return write2(tm_sec()); + format_localized('S', 'O'); + } + + void on_12_hour_time() { + if (is_classic_) { + char buf[8]; + write_digit2_separated(buf, to_unsigned(tm_hour12()), + to_unsigned(tm_min()), to_unsigned(tm_sec()), ':'); + out_ = copy_str(std::begin(buf), std::end(buf), out_); + *out_++ = ' '; + on_am_pm(); + } else { + format_localized('r'); + } + } + void on_24_hour_time() { + write2(tm_hour()); + *out_++ = ':'; + write2(tm_min()); + } + void on_iso_time() { + char buf[8]; + write_digit2_separated(buf, to_unsigned(tm_hour()), to_unsigned(tm_min()), + to_unsigned(tm_sec()), ':'); + out_ = copy_str(std::begin(buf), std::end(buf), out_); + } + + void on_am_pm() { + if (is_classic_) { + *out_++ = tm_hour() < 12 ? 'A' : 'P'; + *out_++ = 'M'; + } else { + format_localized('p'); + } + } + + // These apply to chrono durations but not tm. void on_duration_value() {} void on_duration_unit() {} - FMT_NORETURN void on_utc_offset() { report_no_date(); } - FMT_NORETURN void on_tz_name() { report_no_date(); } +}; + +struct chrono_format_checker : null_chrono_spec_handler { + FMT_NORETURN void unsupported() { FMT_THROW(format_error("no date")); } + + template + FMT_CONSTEXPR void on_text(const Char*, const Char*) {} + FMT_CONSTEXPR void on_24_hour(numeric_system) {} + FMT_CONSTEXPR void on_12_hour(numeric_system) {} + FMT_CONSTEXPR void on_minute(numeric_system) {} + FMT_CONSTEXPR void on_second(numeric_system) {} + FMT_CONSTEXPR void on_12_hour_time() {} + FMT_CONSTEXPR void on_24_hour_time() {} + FMT_CONSTEXPR void on_iso_time() {} + FMT_CONSTEXPR void on_am_pm() {} + FMT_CONSTEXPR void on_duration_value() {} + FMT_CONSTEXPR void on_duration_unit() {} }; template ::value)> @@ -668,25 +1400,20 @@ template ::value)> inline bool isfinite(T) { return true; } -template ::value)> -inline bool isfinite(T value) { - return std::isfinite(value); -} -// Converts value to int and checks that it's in the range [0, upper). -template ::value)> -inline int to_nonnegative_int(T value, int upper) { - FMT_ASSERT(value >= 0 && value <= upper, "invalid value"); +// Converts value to Int and checks that it's in the range [0, upper). +template ::value)> +inline Int to_nonnegative_int(T value, Int upper) { + FMT_ASSERT(value >= 0 && to_unsigned(value) <= to_unsigned(upper), + "invalid value"); (void)upper; - return static_cast(value); + return static_cast(value); } -template ::value)> -inline int to_nonnegative_int(T value, int upper) { - FMT_ASSERT( - std::isnan(value) || (value >= 0 && value <= static_cast(upper)), - "invalid value"); - (void)upper; - return static_cast(value); +template ::value)> +inline Int to_nonnegative_int(T value, Int upper) { + if (value < 0 || value > static_cast(upper)) + FMT_THROW(format_error("invalid value")); + return static_cast(value); } template ::value)> @@ -743,26 +1470,55 @@ inline std::chrono::duration get_milliseconds( #endif } -template ::value)> -inline std::chrono::duration get_milliseconds( - std::chrono::duration d) { - using common_type = typename std::common_type::type; - auto ms = mod(d.count() * static_cast(Period::num) / - static_cast(Period::den) * 1000, - 1000); - return std::chrono::duration(static_cast(ms)); +// Returns the number of fractional digits in the range [0, 18] according to the +// C++20 spec. If more than 18 fractional digits are required then returns 6 for +// microseconds precision. +constexpr int count_fractional_digits(long long num, long long den, int n = 0) { + return num % den == 0 + ? n + : (n > 18 ? 6 : count_fractional_digits(num * 10, den, n + 1)); } -template -OutputIt format_duration_value(OutputIt out, Rep val, int precision) { - const Char pr_f[] = {'{', ':', '.', '{', '}', 'f', '}', 0}; - if (precision >= 0) return format_to(out, pr_f, val, precision); - const Char fp_f[] = {'{', ':', 'g', '}', 0}; - const Char format[] = {'{', '}', 0}; - return format_to(out, std::is_floating_point::value ? fp_f : format, - val); +constexpr long long pow10(std::uint32_t n) { + return n == 0 ? 1 : 10 * pow10(n - 1); } + +template ::is_signed)> +constexpr std::chrono::duration abs( + std::chrono::duration d) { + // We need to compare the duration using the count() method directly + // due to a compiler bug in clang-11 regarding the spaceship operator, + // when -Wzero-as-null-pointer-constant is enabled. + // In clang-12 the bug has been fixed. See + // https://bugs.llvm.org/show_bug.cgi?id=46235 and the reproducible example: + // https://www.godbolt.org/z/Knbb5joYx. + return d.count() >= d.zero().count() ? d : -d; +} + +template ::is_signed)> +constexpr std::chrono::duration abs( + std::chrono::duration d) { + return d; +} + +template ::value)> +OutputIt format_duration_value(OutputIt out, Rep val, int) { + return write(out, val); +} + +template ::value)> +OutputIt format_duration_value(OutputIt out, Rep val, int precision) { + auto specs = basic_format_specs(); + specs.precision = precision; + specs.type = precision >= 0 ? presentation_type::fixed_lower + : presentation_type::general_lower; + return write(out, val, specs); +} + template OutputIt copy_unit(string_view unit, OutputIt out, Char) { return std::copy(unit.begin(), unit.end(), out); @@ -780,18 +1536,44 @@ template OutputIt format_duration_unit(OutputIt out) { if (const char* unit = get_units()) return copy_unit(string_view(unit), out, Char()); - const Char num_f[] = {'[', '{', '}', ']', 's', 0}; - if (const_check(Period::den == 1)) return format_to(out, num_f, Period::num); - const Char num_def_f[] = {'[', '{', '}', '/', '{', '}', ']', 's', 0}; - return format_to(out, num_def_f, Period::num, Period::den); + *out++ = '['; + out = write(out, Period::num); + if (const_check(Period::den != 1)) { + *out++ = '/'; + out = write(out, Period::den); + } + *out++ = ']'; + *out++ = 's'; + return out; } +class get_locale { + private: + union { + std::locale locale_; + }; + bool has_locale_ = false; + + public: + get_locale(bool localized, locale_ref loc) : has_locale_(localized) { + if (localized) + ::new (&locale_) std::locale(loc.template get()); + } + ~get_locale() { + if (has_locale_) locale_.~locale(); + } + operator const std::locale&() const { + return has_locale_ ? locale_ : get_classic_locale(); + } +}; + template struct chrono_formatter { FormatContext& context; OutputIt out; int precision; + bool localized = false; // rep is unsigned to avoid overflow. using rep = conditional_t::value && sizeof(Rep) < sizeof(int), @@ -803,9 +1585,10 @@ struct chrono_formatter { bool negative; using char_type = typename FormatContext::char_type; + using tm_writer_type = tm_writer; - explicit chrono_formatter(FormatContext& ctx, OutputIt o, - std::chrono::duration d) + chrono_formatter(FormatContext& ctx, OutputIt o, + std::chrono::duration d) : context(ctx), out(o), val(static_cast(d.count())), @@ -880,19 +1663,48 @@ struct chrono_formatter { out = format_decimal(out, n, num_digits).end; } + template void write_fractional_seconds(Duration d) { + constexpr auto num_fractional_digits = + count_fractional_digits(Duration::period::num, Duration::period::den); + + using subsecond_precision = std::chrono::duration< + typename std::common_type::type, + std::ratio<1, detail::pow10(num_fractional_digits)>>; + if (std::ratio_less::value) { + *out++ = '.'; + // Don't convert long double to integer seconds to avoid overflow. + using sec = conditional_t< + std::is_same::value, + std::chrono::duration, std::chrono::seconds>; + auto fractional = detail::abs(d) - std::chrono::duration_cast(d); + const auto subseconds = + std::chrono::treat_as_floating_point< + typename subsecond_precision::rep>::value + ? fractional.count() + : std::chrono::duration_cast(fractional) + .count(); + uint32_or_64_or_128_t n = + to_unsigned(to_nonnegative_int(subseconds, max_value())); + int num_digits = detail::count_digits(n); + if (num_fractional_digits > num_digits) + out = std::fill_n(out, num_fractional_digits - num_digits, '0'); + out = format_decimal(out, n, num_digits).end; + } + } + void write_nan() { std::copy_n("nan", 3, out); } void write_pinf() { std::copy_n("inf", 3, out); } void write_ninf() { std::copy_n("-inf", 4, out); } - void format_localized(const tm& time, char format, char modifier = 0) { + template + void format_tm(const tm& time, Callback cb, Args... args) { if (isnan(val)) return write_nan(); - auto locale = context.locale().template get(); - auto& facet = std::use_facet>(locale); - std::basic_ostringstream os; - os.imbue(locale); - facet.put(os, os, ' ', &time, format, modifier); - auto str = os.str(); - std::copy(str.begin(), str.end(), out); + get_locale loc(localized, context.locale()); + auto w = tm_writer_type(loc, out, time); + (w.*cb)(args...); + out = w.out(); } void on_text(const char_type* begin, const char_type* end) { @@ -913,6 +1725,19 @@ struct chrono_formatter { void on_iso_date() {} void on_utc_offset() {} void on_tz_name() {} + void on_year(numeric_system) {} + void on_short_year(numeric_system) {} + void on_offset_year() {} + void on_century(numeric_system) {} + void on_iso_week_based_year() {} + void on_iso_week_based_short_year() {} + void on_dec_month(numeric_system) {} + void on_dec0_week_of_year(numeric_system) {} + void on_dec1_week_of_year(numeric_system) {} + void on_iso_week_of_year(numeric_system) {} + void on_day_of_year() {} + void on_day_of_month(numeric_system) {} + void on_day_of_month_space(numeric_system) {} void on_24_hour(numeric_system ns) { if (handle_nan_inf()) return; @@ -920,7 +1745,7 @@ struct chrono_formatter { if (ns == numeric_system::standard) return write(hour(), 2); auto time = tm(); time.tm_hour = to_nonnegative_int(hour(), 24); - format_localized(time, 'H', 'O'); + format_tm(time, &tm_writer_type::on_24_hour, ns); } void on_12_hour(numeric_system ns) { @@ -929,7 +1754,7 @@ struct chrono_formatter { if (ns == numeric_system::standard) return write(hour12(), 2); auto time = tm(); time.tm_hour = to_nonnegative_int(hour12(), 12); - format_localized(time, 'I', 'O'); + format_tm(time, &tm_writer_type::on_12_hour, ns); } void on_minute(numeric_system ns) { @@ -938,7 +1763,7 @@ struct chrono_formatter { if (ns == numeric_system::standard) return write(minute(), 2); auto time = tm(); time.tm_min = to_nonnegative_int(minute(), 60); - format_localized(time, 'M', 'O'); + format_tm(time, &tm_writer_type::on_minute, ns); } void on_second(numeric_system ns) { @@ -946,29 +1771,17 @@ struct chrono_formatter { if (ns == numeric_system::standard) { write(second(), 2); -#if FMT_SAFE_DURATION_CAST - // convert rep->Rep - using duration_rep = std::chrono::duration; - using duration_Rep = std::chrono::duration; - auto tmpval = fmt_safe_duration_cast(duration_rep{val}); -#else - auto tmpval = std::chrono::duration(val); -#endif - auto ms = get_milliseconds(tmpval); - if (ms != std::chrono::milliseconds(0)) { - *out++ = '.'; - write(ms.count(), 3); - } + write_fractional_seconds(std::chrono::duration{val}); return; } auto time = tm(); time.tm_sec = to_nonnegative_int(second(), 60); - format_localized(time, 'S', 'O'); + format_tm(time, &tm_writer_type::on_second, ns); } void on_12_hour_time() { if (handle_nan_inf()) return; - format_localized(time(), 'r'); + format_tm(time(), &tm_writer_type::on_12_hour_time); } void on_24_hour_time() { @@ -987,12 +1800,12 @@ struct chrono_formatter { on_24_hour_time(); *out++ = ':'; if (handle_nan_inf()) return; - write(second(), 2); + on_second(numeric_system::standard); } void on_am_pm() { if (handle_nan_inf()) return; - format_localized(time(), 'p'); + format_tm(time(), &tm_writer_type::on_am_pm); } void on_duration_value() { @@ -1005,17 +1818,64 @@ struct chrono_formatter { out = format_duration_unit(out); } }; -} // namespace detail + +FMT_END_DETAIL_NAMESPACE + +#if defined(__cpp_lib_chrono) && __cpp_lib_chrono >= 201907 +using weekday = std::chrono::weekday; +#else +// A fallback version of weekday. +class weekday { + private: + unsigned char value; + + public: + weekday() = default; + explicit constexpr weekday(unsigned wd) noexcept + : value(static_cast(wd != 7 ? wd : 0)) {} + constexpr unsigned c_encoding() const noexcept { return value; } +}; + +class year_month_day {}; +#endif + +// A rudimentary weekday formatter. +template struct formatter { + private: + bool localized = false; + + public: + FMT_CONSTEXPR auto parse(basic_format_parse_context& ctx) + -> decltype(ctx.begin()) { + auto begin = ctx.begin(), end = ctx.end(); + if (begin != end && *begin == 'L') { + ++begin; + localized = true; + } + return begin; + } + + template + auto format(weekday wd, FormatContext& ctx) const -> decltype(ctx.out()) { + auto time = std::tm(); + time.tm_wday = static_cast(wd.c_encoding()); + detail::get_locale loc(localized, ctx.locale()); + auto w = detail::tm_writer(loc, ctx.out(), time); + w.on_abbr_weekday(); + return w.out(); + } +}; template struct formatter, Char> { private: basic_format_specs specs; - int precision; + int precision = -1; using arg_ref_type = detail::arg_ref; arg_ref_type width_ref; arg_ref_type precision_ref; - mutable basic_string_view format_str; + bool localized = false; + basic_string_view format_str; using duration = std::chrono::duration; struct spec_handler { @@ -1038,17 +1898,21 @@ struct formatter, Char> { } void on_error(const char* msg) { FMT_THROW(format_error(msg)); } - void on_fill(basic_string_view fill) { f.specs.fill = fill; } - void on_align(align_t align) { f.specs.align = align; } - void on_width(int width) { f.specs.width = width; } - void on_precision(int _precision) { f.precision = _precision; } - void end_precision() {} + FMT_CONSTEXPR void on_fill(basic_string_view fill) { + f.specs.fill = fill; + } + FMT_CONSTEXPR void on_align(align_t align) { f.specs.align = align; } + FMT_CONSTEXPR void on_width(int width) { f.specs.width = width; } + FMT_CONSTEXPR void on_precision(int _precision) { + f.precision = _precision; + } + FMT_CONSTEXPR void end_precision() {} - template void on_dynamic_width(Id arg_id) { + template FMT_CONSTEXPR void on_dynamic_width(Id arg_id) { f.width_ref = make_arg_ref(arg_id); } - template void on_dynamic_precision(Id arg_id) { + template FMT_CONSTEXPR void on_dynamic_precision(Id arg_id) { f.precision_ref = make_arg_ref(arg_id); } }; @@ -1073,13 +1937,16 @@ struct formatter, Char> { else handler.on_error("precision not allowed for this argument type"); } - end = parse_chrono_format(begin, end, detail::chrono_format_checker()); + if (begin != end && *begin == 'L') { + ++begin; + localized = true; + } + end = detail::parse_chrono_format(begin, end, + detail::chrono_format_checker()); return {begin, end}; } public: - formatter() : precision(-1) {} - FMT_CONSTEXPR auto parse(basic_format_parse_context& ctx) -> decltype(ctx.begin()) { auto range = do_parse(ctx); @@ -1089,30 +1956,112 @@ struct formatter, Char> { } template - auto format(const duration& d, FormatContext& ctx) -> decltype(ctx.out()) { + auto format(const duration& d, FormatContext& ctx) const + -> decltype(ctx.out()) { + auto specs_copy = specs; + auto precision_copy = precision; auto begin = format_str.begin(), end = format_str.end(); // As a possible future optimization, we could avoid extra copying if width // is not specified. basic_memory_buffer buf; auto out = std::back_inserter(buf); - detail::handle_dynamic_spec(specs.width, width_ref, - ctx); - detail::handle_dynamic_spec(precision, + detail::handle_dynamic_spec(specs_copy.width, + width_ref, ctx); + detail::handle_dynamic_spec(precision_copy, precision_ref, ctx); if (begin == end || *begin == '}') { - out = detail::format_duration_value(out, d.count(), precision); + out = detail::format_duration_value(out, d.count(), precision_copy); detail::format_duration_unit(out); } else { detail::chrono_formatter f( ctx, out, d); - f.precision = precision; - parse_chrono_format(begin, end, f); + f.precision = precision_copy; + f.localized = localized; + detail::parse_chrono_format(begin, end, f); } return detail::write( - ctx.out(), basic_string_view(buf.data(), buf.size()), specs); + ctx.out(), basic_string_view(buf.data(), buf.size()), specs_copy); } }; +template +struct formatter, + Char> : formatter { + FMT_CONSTEXPR formatter() { + this->do_parse(default_specs, + default_specs + sizeof(default_specs) / sizeof(Char)); + } + + template + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + return this->do_parse(ctx.begin(), ctx.end(), true); + } + + template + auto format(std::chrono::time_point val, + FormatContext& ctx) const -> decltype(ctx.out()) { + return formatter::format(localtime(val), ctx); + } + + static constexpr const Char default_specs[] = {'%', 'F', ' ', '%', 'T'}; +}; + +template +constexpr const Char + formatter, + Char>::default_specs[]; + +template struct formatter { + private: + enum class spec { + unknown, + year_month_day, + hh_mm_ss, + }; + spec spec_ = spec::unknown; + basic_string_view specs; + + protected: + template + FMT_CONSTEXPR auto do_parse(It begin, It end, bool with_default = false) + -> It { + if (begin != end && *begin == ':') ++begin; + end = detail::parse_chrono_format(begin, end, detail::tm_format_checker()); + if (!with_default || end != begin) + specs = {begin, detail::to_unsigned(end - begin)}; + // basic_string_view<>::compare isn't constexpr before C++17. + if (specs.size() == 2 && specs[0] == Char('%')) { + if (specs[1] == Char('F')) + spec_ = spec::year_month_day; + else if (specs[1] == Char('T')) + spec_ = spec::hh_mm_ss; + } + return end; + } + + public: + template + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + return this->do_parse(ctx.begin(), ctx.end()); + } + + template + auto format(const std::tm& tm, FormatContext& ctx) const + -> decltype(ctx.out()) { + const auto loc_ref = ctx.locale(); + detail::get_locale loc(static_cast(loc_ref), loc_ref); + auto w = detail::tm_writer(loc, ctx.out(), tm); + if (spec_ == spec::year_month_day) + w.on_iso_date(); + else if (spec_ == spec::hh_mm_ss) + w.on_iso_time(); + else + detail::parse_chrono_format(specs.begin(), specs.end(), w); + return w.out(); + } +}; + +FMT_MODULE_EXPORT_END FMT_END_NAMESPACE #endif // FMT_CHRONO_H_ diff --git a/Externals/fmt/include/fmt/color.h b/Externals/fmt/include/fmt/color.h index 7891058950..dfbe482938 100755 --- a/Externals/fmt/include/fmt/color.h +++ b/Externals/fmt/include/fmt/color.h @@ -10,7 +10,15 @@ #include "format.h" +// __declspec(deprecated) is broken in some MSVC versions. +#if FMT_MSC_VER +# define FMT_DEPRECATED_NONMSVC +#else +# define FMT_DEPRECATED_NONMSVC FMT_DEPRECATED +#endif + FMT_BEGIN_NAMESPACE +FMT_MODULE_EXPORT_BEGIN enum class color : uint32_t { alice_blue = 0xF0F8FF, // rgb(240,248,255) @@ -177,9 +185,13 @@ enum class terminal_color : uint8_t { enum class emphasis : uint8_t { bold = 1, - italic = 1 << 1, - underline = 1 << 2, - strikethrough = 1 << 3 + faint = 1 << 1, + italic = 1 << 2, + underline = 1 << 3, + blink = 1 << 4, + reverse = 1 << 5, + conceal = 1 << 6, + strikethrough = 1 << 7, }; // rgb is a struct for red, green and blue colors. @@ -198,7 +210,7 @@ struct rgb { uint8_t b; }; -namespace detail { +FMT_BEGIN_DETAIL_NAMESPACE // color is a struct of either a rgb color or a terminal color. struct color_type { @@ -221,9 +233,10 @@ struct color_type { uint32_t rgb_color; } value; }; -} // namespace detail -// Experimental text formatting support. +FMT_END_DETAIL_NAMESPACE + +/** A text style consisting of foreground and background colors and emphasis. */ class text_style { public: FMT_CONSTEXPR text_style(emphasis em = emphasis()) FMT_NOEXCEPT @@ -260,33 +273,14 @@ class text_style { return lhs |= rhs; } - FMT_CONSTEXPR text_style& operator&=(const text_style& rhs) { - if (!set_foreground_color) { - set_foreground_color = rhs.set_foreground_color; - foreground_color = rhs.foreground_color; - } else if (rhs.set_foreground_color) { - if (!foreground_color.is_rgb || !rhs.foreground_color.is_rgb) - FMT_THROW(format_error("can't AND a terminal color")); - foreground_color.value.rgb_color &= rhs.foreground_color.value.rgb_color; - } - - if (!set_background_color) { - set_background_color = rhs.set_background_color; - background_color = rhs.background_color; - } else if (rhs.set_background_color) { - if (!background_color.is_rgb || !rhs.background_color.is_rgb) - FMT_THROW(format_error("can't AND a terminal color")); - background_color.value.rgb_color &= rhs.background_color.value.rgb_color; - } - - ems = static_cast(static_cast(ems) & - static_cast(rhs.ems)); - return *this; + FMT_DEPRECATED_NONMSVC FMT_CONSTEXPR text_style& operator&=( + const text_style& rhs) { + return and_assign(rhs); } - friend FMT_CONSTEXPR text_style operator&(text_style lhs, - const text_style& rhs) { - return lhs &= rhs; + FMT_DEPRECATED_NONMSVC friend FMT_CONSTEXPR text_style + operator&(text_style lhs, const text_style& rhs) { + return lhs.and_assign(rhs); } FMT_CONSTEXPR bool has_foreground() const FMT_NOEXCEPT { @@ -326,8 +320,34 @@ class text_style { } } + // DEPRECATED! + FMT_CONSTEXPR text_style& and_assign(const text_style& rhs) { + if (!set_foreground_color) { + set_foreground_color = rhs.set_foreground_color; + foreground_color = rhs.foreground_color; + } else if (rhs.set_foreground_color) { + if (!foreground_color.is_rgb || !rhs.foreground_color.is_rgb) + FMT_THROW(format_error("can't AND a terminal color")); + foreground_color.value.rgb_color &= rhs.foreground_color.value.rgb_color; + } + + if (!set_background_color) { + set_background_color = rhs.set_background_color; + background_color = rhs.background_color; + } else if (rhs.set_background_color) { + if (!background_color.is_rgb || !rhs.background_color.is_rgb) + FMT_THROW(format_error("can't AND a terminal color")); + background_color.value.rgb_color &= rhs.background_color.value.rgb_color; + } + + ems = static_cast(static_cast(ems) & + static_cast(rhs.ems)); + return *this; + } + friend FMT_CONSTEXPR_DECL text_style fg(detail::color_type foreground) FMT_NOEXCEPT; + friend FMT_CONSTEXPR_DECL text_style bg(detail::color_type background) FMT_NOEXCEPT; @@ -338,19 +358,22 @@ class text_style { emphasis ems; }; -FMT_CONSTEXPR text_style fg(detail::color_type foreground) FMT_NOEXCEPT { - return text_style(/*is_foreground=*/true, foreground); +/** Creates a text style from the foreground (text) color. */ +FMT_CONSTEXPR inline text_style fg(detail::color_type foreground) FMT_NOEXCEPT { + return text_style(true, foreground); } -FMT_CONSTEXPR text_style bg(detail::color_type background) FMT_NOEXCEPT { - return text_style(/*is_foreground=*/false, background); +/** Creates a text style from the background color. */ +FMT_CONSTEXPR inline text_style bg(detail::color_type background) FMT_NOEXCEPT { + return text_style(false, background); } -FMT_CONSTEXPR text_style operator|(emphasis lhs, emphasis rhs) FMT_NOEXCEPT { +FMT_CONSTEXPR inline text_style operator|(emphasis lhs, + emphasis rhs) FMT_NOEXCEPT { return text_style(lhs) | rhs; } -namespace detail { +FMT_BEGIN_DETAIL_NAMESPACE template struct ansi_color_escape { FMT_CONSTEXPR ansi_color_escape(detail::color_type text_color, @@ -358,7 +381,7 @@ template struct ansi_color_escape { // If we have a terminal color, we need to output another escape code // sequence. if (!text_color.is_rgb) { - bool is_background = esc == detail::data::background_color; + bool is_background = esc == string_view("\x1b[48;2;"); uint32_t value = text_color.value.term_color; // Background ASCII codes are the same as the foreground ones but with // 10 more. @@ -390,16 +413,18 @@ template struct ansi_color_escape { buffer[19] = static_cast(0); } FMT_CONSTEXPR ansi_color_escape(emphasis em) FMT_NOEXCEPT { - uint8_t em_codes[4] = {}; - uint8_t em_bits = static_cast(em); - if (em_bits & static_cast(emphasis::bold)) em_codes[0] = 1; - if (em_bits & static_cast(emphasis::italic)) em_codes[1] = 3; - if (em_bits & static_cast(emphasis::underline)) em_codes[2] = 4; - if (em_bits & static_cast(emphasis::strikethrough)) - em_codes[3] = 9; + uint8_t em_codes[num_emphases] = {}; + if (has_emphasis(em, emphasis::bold)) em_codes[0] = 1; + if (has_emphasis(em, emphasis::faint)) em_codes[1] = 2; + if (has_emphasis(em, emphasis::italic)) em_codes[2] = 3; + if (has_emphasis(em, emphasis::underline)) em_codes[3] = 4; + if (has_emphasis(em, emphasis::blink)) em_codes[4] = 5; + if (has_emphasis(em, emphasis::reverse)) em_codes[5] = 7; + if (has_emphasis(em, emphasis::conceal)) em_codes[6] = 8; + if (has_emphasis(em, emphasis::strikethrough)) em_codes[7] = 9; size_t index = 0; - for (int i = 0; i < 4; ++i) { + for (size_t i = 0; i < num_emphases; ++i) { if (!em_codes[i]) continue; buffer[index++] = static_cast('\x1b'); buffer[index++] = static_cast('['); @@ -411,12 +436,13 @@ template struct ansi_color_escape { FMT_CONSTEXPR operator const Char*() const FMT_NOEXCEPT { return buffer; } FMT_CONSTEXPR const Char* begin() const FMT_NOEXCEPT { return buffer; } - FMT_CONSTEXPR const Char* end() const FMT_NOEXCEPT { + FMT_CONSTEXPR_CHAR_TRAITS const Char* end() const FMT_NOEXCEPT { return buffer + std::char_traits::length(buffer); } private: - Char buffer[7u + 3u * 4u + 1u]; + static constexpr size_t num_emphases = 8; + Char buffer[7u + 3u * num_emphases + 1u]; static FMT_CONSTEXPR void to_esc(uint8_t c, Char* out, char delimiter) FMT_NOEXCEPT { @@ -425,18 +451,22 @@ template struct ansi_color_escape { out[2] = static_cast('0' + c % 10); out[3] = static_cast(delimiter); } + static FMT_CONSTEXPR bool has_emphasis(emphasis em, + emphasis mask) FMT_NOEXCEPT { + return static_cast(em) & static_cast(mask); + } }; template FMT_CONSTEXPR ansi_color_escape make_foreground_color( detail::color_type foreground) FMT_NOEXCEPT { - return ansi_color_escape(foreground, detail::data::foreground_color); + return ansi_color_escape(foreground, "\x1b[38;2;"); } template FMT_CONSTEXPR ansi_color_escape make_background_color( detail::color_type background) FMT_NOEXCEPT { - return ansi_color_escape(background, detail::data::background_color); + return ansi_color_escape(background, "\x1b[48;2;"); } template @@ -455,18 +485,17 @@ inline void fputs(const wchar_t* chars, FILE* stream) FMT_NOEXCEPT { } template inline void reset_color(FILE* stream) FMT_NOEXCEPT { - fputs(detail::data::reset_color, stream); + fputs("\x1b[0m", stream); } template <> inline void reset_color(FILE* stream) FMT_NOEXCEPT { - fputs(detail::data::wreset_color, stream); + fputs(L"\x1b[0m", stream); } template inline void reset_color(buffer& buffer) FMT_NOEXCEPT { - const char* begin = data::reset_color; - const char* end = begin + sizeof(data::reset_color) - 1; - buffer.append(begin, end); + auto reset_color = string_view("\x1b[0m"); + buffer.append(reset_color.begin(), reset_color.end()); } template @@ -489,10 +518,11 @@ void vformat_to(buffer& buf, const text_style& ts, auto background = detail::make_background_color(ts.get_background()); buf.append(background.begin(), background.end()); } - detail::vformat_to(buf, format_str, args); + detail::vformat_to(buf, format_str, args, {}); if (has_style) detail::reset_color(buf); } -} // namespace detail + +FMT_END_DETAIL_NAMESPACE template > void vprint(std::FILE* f, const text_style& ts, const S& format, @@ -523,11 +553,15 @@ void print(std::FILE* f, const text_style& ts, const S& format_str, } /** + \rst Formats a string and prints it to stdout using ANSI escape sequences to specify text formatting. - Example: + + **Example**:: + fmt::print(fmt::emphasis::bold | fg(fmt::color::red), "Elapsed time: {0:.2f} seconds", 1.23); + \endrst */ template ::value)> @@ -559,8 +593,8 @@ inline std::basic_string vformat( template > inline std::basic_string format(const text_style& ts, const S& format_str, const Args&... args) { - return vformat(ts, to_string_view(format_str), - fmt::make_args_checked(format_str, args...)); + return fmt::vformat(ts, to_string_view(format_str), + fmt::make_args_checked(format_str, args...)); } /** @@ -571,7 +605,7 @@ template format_str, basic_format_args>> args) { - decltype(detail::get_buffer(out)) buf(detail::get_buffer_init(out)); + auto&& buf = detail::get_buffer(out); detail::vformat_to(buf, ts, format_str, args); return detail::get_iterator(buf); } @@ -589,14 +623,16 @@ OutputIt vformat_to( \endrst */ template >::value&& - detail::is_string::value)> -inline OutputIt format_to(OutputIt out, const text_style& ts, - const S& format_str, Args&&... args) { + bool enable = detail::is_output_iterator>::value&& + detail::is_string::value> +inline auto format_to(OutputIt out, const text_style& ts, const S& format_str, + Args&&... args) -> + typename std::enable_if::type { return vformat_to(out, ts, to_string_view(format_str), fmt::make_args_checked(format_str, args...)); } +FMT_MODULE_EXPORT_END FMT_END_NAMESPACE #endif // FMT_COLOR_H_ diff --git a/Externals/fmt/include/fmt/compile.h b/Externals/fmt/include/fmt/compile.h index 7db610d90f..1dba3ddb52 100644 --- a/Externals/fmt/include/fmt/compile.h +++ b/Externals/fmt/include/fmt/compile.h @@ -8,13 +8,135 @@ #ifndef FMT_COMPILE_H_ #define FMT_COMPILE_H_ -#include - #include "format.h" FMT_BEGIN_NAMESPACE namespace detail { +// An output iterator that counts the number of objects written to it and +// discards them. +class counting_iterator { + private: + size_t count_; + + public: + using iterator_category = std::output_iterator_tag; + using difference_type = std::ptrdiff_t; + using pointer = void; + using reference = void; + using _Unchecked_type = counting_iterator; // Mark iterator as checked. + + struct value_type { + template void operator=(const T&) {} + }; + + counting_iterator() : count_(0) {} + + size_t count() const { return count_; } + + counting_iterator& operator++() { + ++count_; + return *this; + } + counting_iterator operator++(int) { + auto it = *this; + ++*this; + return it; + } + + friend counting_iterator operator+(counting_iterator it, difference_type n) { + it.count_ += static_cast(n); + return it; + } + + value_type operator*() const { return {}; } +}; + +template +inline counting_iterator copy_str(InputIt begin, InputIt end, + counting_iterator it) { + return it + (end - begin); +} + +template class truncating_iterator_base { + protected: + OutputIt out_; + size_t limit_; + size_t count_ = 0; + + truncating_iterator_base() : out_(), limit_(0) {} + + truncating_iterator_base(OutputIt out, size_t limit) + : out_(out), limit_(limit) {} + + public: + using iterator_category = std::output_iterator_tag; + using value_type = typename std::iterator_traits::value_type; + using difference_type = std::ptrdiff_t; + using pointer = void; + using reference = void; + using _Unchecked_type = + truncating_iterator_base; // Mark iterator as checked. + + OutputIt base() const { return out_; } + size_t count() const { return count_; } +}; + +// An output iterator that truncates the output and counts the number of objects +// written to it. +template ::value_type>::type> +class truncating_iterator; + +template +class truncating_iterator + : public truncating_iterator_base { + mutable typename truncating_iterator_base::value_type blackhole_; + + public: + using value_type = typename truncating_iterator_base::value_type; + + truncating_iterator() = default; + + truncating_iterator(OutputIt out, size_t limit) + : truncating_iterator_base(out, limit) {} + + truncating_iterator& operator++() { + if (this->count_++ < this->limit_) ++this->out_; + return *this; + } + + truncating_iterator operator++(int) { + auto it = *this; + ++*this; + return it; + } + + value_type& operator*() const { + return this->count_ < this->limit_ ? *this->out_ : blackhole_; + } +}; + +template +class truncating_iterator + : public truncating_iterator_base { + public: + truncating_iterator() = default; + + truncating_iterator(OutputIt out, size_t limit) + : truncating_iterator_base(out, limit) {} + + template truncating_iterator& operator=(T val) { + if (this->count_++ < this->limit_) *this->out_++ = val; + return *this; + } + + truncating_iterator& operator++() { return *this; } + truncating_iterator& operator++(int) { return *this; } + truncating_iterator& operator*() { return *this; } +}; + // A compile-time string which is compiled into fast formatting code. class compiled_string {}; @@ -34,336 +156,30 @@ struct is_compiled_string : std::is_base_of {}; std::string s = fmt::format(FMT_COMPILE("{}"), 42); \endrst */ -#define FMT_COMPILE(s) FMT_STRING_IMPL(s, fmt::detail::compiled_string) +#if defined(__cpp_if_constexpr) && defined(__cpp_return_type_deduction) +# define FMT_COMPILE(s) \ + FMT_STRING_IMPL(s, fmt::detail::compiled_string, explicit) +#else +# define FMT_COMPILE(s) FMT_STRING(s) +#endif + +#if FMT_USE_NONTYPE_TEMPLATE_PARAMETERS +template Str> +struct udl_compiled_string : compiled_string { + using char_type = Char; + constexpr operator basic_string_view() const { + return {Str.data, N - 1}; + } +}; +#endif template const T& first(const T& value, const Tail&...) { return value; } -// Part of a compiled format string. It can be either literal text or a -// replacement field. -template struct format_part { - enum class kind { arg_index, arg_name, text, replacement }; - - struct replacement { - arg_ref arg_id; - dynamic_format_specs specs; - }; - - kind part_kind; - union value { - int arg_index; - basic_string_view str; - replacement repl; - - FMT_CONSTEXPR value(int index = 0) : arg_index(index) {} - FMT_CONSTEXPR value(basic_string_view s) : str(s) {} - FMT_CONSTEXPR value(replacement r) : repl(r) {} - } val; - // Position past the end of the argument id. - const Char* arg_id_end = nullptr; - - FMT_CONSTEXPR format_part(kind k = kind::arg_index, value v = {}) - : part_kind(k), val(v) {} - - static FMT_CONSTEXPR format_part make_arg_index(int index) { - return format_part(kind::arg_index, index); - } - static FMT_CONSTEXPR format_part make_arg_name(basic_string_view name) { - return format_part(kind::arg_name, name); - } - static FMT_CONSTEXPR format_part make_text(basic_string_view text) { - return format_part(kind::text, text); - } - static FMT_CONSTEXPR format_part make_replacement(replacement repl) { - return format_part(kind::replacement, repl); - } -}; - -template struct part_counter { - unsigned num_parts = 0; - - FMT_CONSTEXPR void on_text(const Char* begin, const Char* end) { - if (begin != end) ++num_parts; - } - - FMT_CONSTEXPR int on_arg_id() { return ++num_parts, 0; } - FMT_CONSTEXPR int on_arg_id(int) { return ++num_parts, 0; } - FMT_CONSTEXPR int on_arg_id(basic_string_view) { - return ++num_parts, 0; - } - - FMT_CONSTEXPR void on_replacement_field(int, const Char*) {} - - FMT_CONSTEXPR const Char* on_format_specs(int, const Char* begin, - const Char* end) { - // Find the matching brace. - unsigned brace_counter = 0; - for (; begin != end; ++begin) { - if (*begin == '{') { - ++brace_counter; - } else if (*begin == '}') { - if (brace_counter == 0u) break; - --brace_counter; - } - } - return begin; - } - - FMT_CONSTEXPR void on_error(const char*) {} -}; - -// Counts the number of parts in a format string. -template -FMT_CONSTEXPR unsigned count_parts(basic_string_view format_str) { - part_counter counter; - parse_format_string(format_str, counter); - return counter.num_parts; -} - -template -class format_string_compiler : public error_handler { - private: - using part = format_part; - - PartHandler handler_; - part part_; - basic_string_view format_str_; - basic_format_parse_context parse_context_; - - public: - FMT_CONSTEXPR format_string_compiler(basic_string_view format_str, - PartHandler handler) - : handler_(handler), - format_str_(format_str), - parse_context_(format_str) {} - - FMT_CONSTEXPR void on_text(const Char* begin, const Char* end) { - if (begin != end) - handler_(part::make_text({begin, to_unsigned(end - begin)})); - } - - FMT_CONSTEXPR int on_arg_id() { - part_ = part::make_arg_index(parse_context_.next_arg_id()); - return 0; - } - - FMT_CONSTEXPR int on_arg_id(int id) { - parse_context_.check_arg_id(id); - part_ = part::make_arg_index(id); - return 0; - } - - FMT_CONSTEXPR int on_arg_id(basic_string_view id) { - part_ = part::make_arg_name(id); - return 0; - } - - FMT_CONSTEXPR void on_replacement_field(int, const Char* ptr) { - part_.arg_id_end = ptr; - handler_(part_); - } - - FMT_CONSTEXPR const Char* on_format_specs(int, const Char* begin, - const Char* end) { - auto repl = typename part::replacement(); - dynamic_specs_handler> handler( - repl.specs, parse_context_); - auto it = parse_format_specs(begin, end, handler); - if (*it != '}') on_error("missing '}' in format string"); - repl.arg_id = part_.part_kind == part::kind::arg_index - ? arg_ref(part_.val.arg_index) - : arg_ref(part_.val.str); - auto part = part::make_replacement(repl); - part.arg_id_end = begin; - handler_(part); - return it; - } -}; - -// Compiles a format string and invokes handler(part) for each parsed part. -template -FMT_CONSTEXPR void compile_format_string(basic_string_view format_str, - PartHandler handler) { - parse_format_string( - format_str, - format_string_compiler(format_str, handler)); -} - -template -void format_arg( - basic_format_parse_context& parse_ctx, - Context& ctx, Id arg_id) { - ctx.advance_to(visit_format_arg( - arg_formatter(ctx, &parse_ctx), - ctx.arg(arg_id))); -} - -// vformat_to is defined in a subnamespace to prevent ADL. -namespace cf { -template -auto vformat_to(OutputIt out, CompiledFormat& cf, - basic_format_args args) -> typename Context::iterator { - using char_type = typename Context::char_type; - basic_format_parse_context parse_ctx( - to_string_view(cf.format_str_)); - Context ctx(out, args); - - const auto& parts = cf.parts(); - for (auto part_it = std::begin(parts); part_it != std::end(parts); - ++part_it) { - const auto& part = *part_it; - const auto& value = part.val; - - using format_part_t = format_part; - switch (part.part_kind) { - case format_part_t::kind::text: { - const auto text = value.str; - auto output = ctx.out(); - auto&& it = reserve(output, text.size()); - it = std::copy_n(text.begin(), text.size(), it); - ctx.advance_to(output); - break; - } - - case format_part_t::kind::arg_index: - advance_to(parse_ctx, part.arg_id_end); - detail::format_arg(parse_ctx, ctx, value.arg_index); - break; - - case format_part_t::kind::arg_name: - advance_to(parse_ctx, part.arg_id_end); - detail::format_arg(parse_ctx, ctx, value.str); - break; - - case format_part_t::kind::replacement: { - const auto& arg_id_value = value.repl.arg_id.val; - const auto arg = value.repl.arg_id.kind == arg_id_kind::index - ? ctx.arg(arg_id_value.index) - : ctx.arg(arg_id_value.name); - - auto specs = value.repl.specs; - - handle_dynamic_spec(specs.width, specs.width_ref, ctx); - handle_dynamic_spec(specs.precision, - specs.precision_ref, ctx); - - error_handler h; - numeric_specs_checker checker(h, arg.type()); - if (specs.align == align::numeric) checker.require_numeric_argument(); - if (specs.sign != sign::none) checker.check_sign(); - if (specs.alt) checker.require_numeric_argument(); - if (specs.precision >= 0) checker.check_precision(); - - advance_to(parse_ctx, part.arg_id_end); - ctx.advance_to( - visit_format_arg(arg_formatter( - ctx, nullptr, &specs), - arg)); - break; - } - } - } - return ctx.out(); -} -} // namespace cf - -struct basic_compiled_format {}; - -template -struct compiled_format_base : basic_compiled_format { - using char_type = char_t; - using parts_container = std::vector>; - - parts_container compiled_parts; - - explicit compiled_format_base(basic_string_view format_str) { - compile_format_string(format_str, - [this](const format_part& part) { - compiled_parts.push_back(part); - }); - } - - const parts_container& parts() const { return compiled_parts; } -}; - -template struct format_part_array { - format_part data[N] = {}; - FMT_CONSTEXPR format_part_array() = default; -}; - -template -FMT_CONSTEXPR format_part_array compile_to_parts( - basic_string_view format_str) { - format_part_array parts; - unsigned counter = 0; - // This is not a lambda for compatibility with older compilers. - struct { - format_part* parts; - unsigned* counter; - FMT_CONSTEXPR void operator()(const format_part& part) { - parts[(*counter)++] = part; - } - } collector{parts.data, &counter}; - compile_format_string(format_str, collector); - if (counter < N) { - parts.data[counter] = - format_part::make_text(basic_string_view()); - } - return parts; -} - -template constexpr const T& constexpr_max(const T& a, const T& b) { - return (a < b) ? b : a; -} - -template -struct compiled_format_base::value>> - : basic_compiled_format { - using char_type = char_t; - - FMT_CONSTEXPR explicit compiled_format_base(basic_string_view) {} - -// Workaround for old compilers. Format string compilation will not be -// performed there anyway. -#if FMT_USE_CONSTEXPR - static FMT_CONSTEXPR_DECL const unsigned num_format_parts = - constexpr_max(count_parts(to_string_view(S())), 1u); -#else - static const unsigned num_format_parts = 1; -#endif - - using parts_container = format_part[num_format_parts]; - - const parts_container& parts() const { - static FMT_CONSTEXPR_DECL const auto compiled_parts = - compile_to_parts( - detail::to_string_view(S())); - return compiled_parts.data; - } -}; - -template -class compiled_format : private compiled_format_base { - public: - using typename compiled_format_base::char_type; - - private: - basic_string_view format_str_; - - template - friend auto cf::vformat_to(OutputIt out, CompiledFormat& cf, - basic_format_args args) -> - typename Context::iterator; - - public: - compiled_format() = delete; - explicit constexpr compiled_format(basic_string_view format_str) - : compiled_format_base(format_str), format_str_(format_str) {} -}; - -#ifdef __cpp_if_constexpr +#if defined(__cpp_if_constexpr) && defined(__cpp_return_type_deduction) template struct type_list {}; // Returns a reference to the argument at index N from [first, rest...]. @@ -374,13 +190,20 @@ constexpr const auto& get([[maybe_unused]] const T& first, if constexpr (N == 0) return first; else - return get(rest...); + return detail::get(rest...); +} + +template +constexpr int get_arg_index_by_name(basic_string_view name, + type_list) { + return get_arg_index_by_name(name); } template struct get_type_impl; template struct get_type_impl> { - using type = remove_cvref_t(std::declval()...))>; + using type = + remove_cvref_t(std::declval()...))>; }; template @@ -393,7 +216,7 @@ template struct text { using char_type = Char; template - OutputIt format(OutputIt out, const Args&...) const { + constexpr OutputIt format(OutputIt out, const Args&...) const { return write(out, data); } }; @@ -412,11 +235,22 @@ template struct code_unit { using char_type = Char; template - OutputIt format(OutputIt out, const Args&...) const { + constexpr OutputIt format(OutputIt out, const Args&...) const { return write(out, value); } }; +// This ensures that the argument type is convertible to `const T&`. +template +constexpr const T& get_arg_checked(const Args&... args) { + const auto& arg = detail::get(args...); + if constexpr (detail::is_named_arg>()) { + return arg.value; + } else { + return arg; + } +} + template struct is_compiled_format> : std::true_type {}; @@ -425,29 +259,58 @@ template struct field { using char_type = Char; template - OutputIt format(OutputIt out, const Args&... args) const { - // This ensures that the argument type is convertile to `const T&`. - const T& arg = get(args...); - return write(out, arg); + constexpr OutputIt format(OutputIt out, const Args&... args) const { + return write(out, get_arg_checked(args...)); } }; template struct is_compiled_format> : std::true_type {}; +// A replacement field that refers to argument with name. +template struct runtime_named_field { + using char_type = Char; + basic_string_view name; + + template + constexpr static bool try_format_argument( + OutputIt& out, + // [[maybe_unused]] due to unused-but-set-parameter warning in GCC 7,8,9 + [[maybe_unused]] basic_string_view arg_name, const T& arg) { + if constexpr (is_named_arg::type>::value) { + if (arg_name == arg.name) { + out = write(out, arg.value); + return true; + } + } + return false; + } + + template + constexpr OutputIt format(OutputIt out, const Args&... args) const { + bool found = (try_format_argument(out, name, args) || ...); + if (!found) { + FMT_THROW(format_error("argument with specified name is not found")); + } + return out; + } +}; + +template +struct is_compiled_format> : std::true_type {}; + // A replacement field that refers to argument N and has format specifiers. template struct spec_field { using char_type = Char; - mutable formatter fmt; + formatter fmt; template - OutputIt format(OutputIt out, const Args&... args) const { - // This ensures that the argument type is convertile to `const T&`. - const T& arg = get(args...); + constexpr FMT_INLINE OutputIt format(OutputIt out, + const Args&... args) const { const auto& vargs = - make_format_args>(args...); + fmt::make_format_args>(args...); basic_format_context ctx(out, vargs); - return fmt.format(arg, ctx); + return fmt.format(get_arg_checked(args...), ctx); } }; @@ -460,7 +323,7 @@ template struct concat { using char_type = typename L::char_type; template - OutputIt format(OutputIt out, const Args&... args) const { + constexpr OutputIt format(OutputIt out, const Args&... args) const { out = lhs.format(out, args...); return rhs.format(out, args...); } @@ -508,14 +371,79 @@ template struct parse_specs_result { int next_arg_id; }; +constexpr int manual_indexing_id = -1; + template constexpr parse_specs_result parse_specs(basic_string_view str, - size_t pos, int arg_id) { + size_t pos, int next_arg_id) { str.remove_prefix(pos); - auto ctx = basic_format_parse_context(str, {}, arg_id + 1); + auto ctx = basic_format_parse_context(str, {}, next_arg_id); auto f = formatter(); auto end = f.parse(ctx); - return {f, pos + (end - str.data()) + 1, ctx.next_arg_id()}; + return {f, pos + fmt::detail::to_unsigned(end - str.data()) + 1, + next_arg_id == 0 ? manual_indexing_id : ctx.next_arg_id()}; +} + +template struct arg_id_handler { + arg_ref arg_id; + + constexpr int operator()() { + FMT_ASSERT(false, "handler cannot be used with automatic indexing"); + return 0; + } + constexpr int operator()(int id) { + arg_id = arg_ref(id); + return 0; + } + constexpr int operator()(basic_string_view id) { + arg_id = arg_ref(id); + return 0; + } + + constexpr void on_error(const char* message) { + FMT_THROW(format_error(message)); + } +}; + +template struct parse_arg_id_result { + arg_ref arg_id; + const Char* arg_id_end; +}; + +template +constexpr auto parse_arg_id(const Char* begin, const Char* end) { + auto handler = arg_id_handler{arg_ref{}}; + auto arg_id_end = parse_arg_id(begin, end, handler); + return parse_arg_id_result{handler.arg_id, arg_id_end}; +} + +template struct field_type { + using type = remove_cvref_t; +}; + +template +struct field_type::value>> { + using type = remove_cvref_t; +}; + +template +constexpr auto parse_replacement_field_then_tail(S format_str) { + using char_type = typename S::char_type; + constexpr auto str = basic_string_view(format_str); + constexpr char_type c = END_POS != str.size() ? str[END_POS] : char_type(); + if constexpr (c == '}') { + return parse_tail( + field::type, ARG_INDEX>(), + format_str); + } else if constexpr (c == ':') { + constexpr auto result = parse_specs::type>( + str, END_POS + 1, NEXT_ID == manual_indexing_id ? 0 : NEXT_ID); + return parse_tail( + spec_field::type, ARG_INDEX>{ + result.fmt}, + format_str); + } } // Compiles a non-empty format string and returns the compiled representation @@ -523,27 +451,59 @@ constexpr parse_specs_result parse_specs(basic_string_view str, template constexpr auto compile_format_string(S format_str) { using char_type = typename S::char_type; - constexpr basic_string_view str = format_str; + constexpr auto str = basic_string_view(format_str); if constexpr (str[POS] == '{') { - if (POS + 1 == str.size()) - throw format_error("unmatched '{' in format string"); + if constexpr (POS + 1 == str.size()) + FMT_THROW(format_error("unmatched '{' in format string")); if constexpr (str[POS + 1] == '{') { return parse_tail(make_text(str, POS, 1), format_str); - } else if constexpr (str[POS + 1] == '}') { - using type = get_type; - return parse_tail(field(), - format_str); - } else if constexpr (str[POS + 1] == ':') { - using type = get_type; - constexpr auto result = parse_specs(str, POS + 2, ID); - return parse_tail( - spec_field{result.fmt}, format_str); + } else if constexpr (str[POS + 1] == '}' || str[POS + 1] == ':') { + static_assert(ID != manual_indexing_id, + "cannot switch from manual to automatic argument indexing"); + constexpr auto next_id = + ID != manual_indexing_id ? ID + 1 : manual_indexing_id; + return parse_replacement_field_then_tail, Args, + POS + 1, ID, next_id>( + format_str); } else { - return unknown_format(); + constexpr auto arg_id_result = + parse_arg_id(str.data() + POS + 1, str.data() + str.size()); + constexpr auto arg_id_end_pos = arg_id_result.arg_id_end - str.data(); + constexpr char_type c = + arg_id_end_pos != str.size() ? str[arg_id_end_pos] : char_type(); + static_assert(c == '}' || c == ':', "missing '}' in format string"); + if constexpr (arg_id_result.arg_id.kind == arg_id_kind::index) { + static_assert( + ID == manual_indexing_id || ID == 0, + "cannot switch from automatic to manual argument indexing"); + constexpr auto arg_index = arg_id_result.arg_id.val.index; + return parse_replacement_field_then_tail, + Args, arg_id_end_pos, + arg_index, manual_indexing_id>( + format_str); + } else if constexpr (arg_id_result.arg_id.kind == arg_id_kind::name) { + constexpr auto arg_index = + get_arg_index_by_name(arg_id_result.arg_id.val.name, Args{}); + if constexpr (arg_index != invalid_arg_index) { + constexpr auto next_id = + ID != manual_indexing_id ? ID + 1 : manual_indexing_id; + return parse_replacement_field_then_tail< + decltype(get_type::value), Args, arg_id_end_pos, + arg_index, next_id>(format_str); + } else { + if constexpr (c == '}') { + return parse_tail( + runtime_named_field{arg_id_result.arg_id.val.name}, + format_str); + } else if constexpr (c == ':') { + return unknown_format(); // no type info for specs parsing + } + } + } } } else if constexpr (str[POS] == '}') { - if (POS + 1 == str.size()) - throw format_error("unmatched '}' in format string"); + if constexpr (POS + 1 == str.size()) + FMT_THROW(format_error("unmatched '}' in format string")); return parse_tail(make_text(str, POS, 1), format_str); } else { constexpr auto end = parse_text(str, POS + 1); @@ -558,143 +518,125 @@ constexpr auto compile_format_string(S format_str) { } template ::value || - detail::is_compiled_string::value)> + FMT_ENABLE_IF(detail::is_compiled_string::value)> constexpr auto compile(S format_str) { - constexpr basic_string_view str = format_str; + constexpr auto str = basic_string_view(format_str); if constexpr (str.size() == 0) { return detail::make_text(str, 0, 0); } else { constexpr auto result = detail::compile_format_string, 0, 0>( format_str); - if constexpr (std::is_same, - detail::unknown_format>()) { - return detail::compiled_format(to_string_view(format_str)); - } else { - return result; - } + return result; } } -#else -template ::value)> -constexpr auto compile(S format_str) -> detail::compiled_format { - return detail::compiled_format(to_string_view(format_str)); -} -#endif // __cpp_if_constexpr - -// Compiles the format string which must be a string literal. -template -auto compile(const Char (&format_str)[N]) - -> detail::compiled_format { - return detail::compiled_format( - basic_string_view(format_str, N - 1)); -} +#endif // defined(__cpp_if_constexpr) && defined(__cpp_return_type_deduction) } // namespace detail -// DEPRECATED! use FMT_COMPILE instead. -template -FMT_DEPRECATED auto compile(const Args&... args) - -> decltype(detail::compile(args...)) { - return detail::compile(args...); -} +FMT_MODULE_EXPORT_BEGIN -#if FMT_USE_CONSTEXPR -# ifdef __cpp_if_constexpr +#if defined(__cpp_if_constexpr) && defined(__cpp_return_type_deduction) template ::value)> FMT_INLINE std::basic_string format(const CompiledFormat& cf, const Args&... args) { - basic_memory_buffer buffer; - cf.format(detail::buffer_appender(buffer), args...); - return to_string(buffer); + auto s = std::basic_string(); + cf.format(std::back_inserter(s), args...); + return s; } template ::value)> -OutputIt format_to(OutputIt out, const CompiledFormat& cf, - const Args&... args) { +constexpr FMT_INLINE OutputIt format_to(OutputIt out, const CompiledFormat& cf, + const Args&... args) { return cf.format(out, args...); } -# endif // __cpp_if_constexpr -#endif // FMT_USE_CONSTEXPR - -template ::value)> -std::basic_string format(const CompiledFormat& cf, const Args&... args) { - basic_memory_buffer buffer; - using context = buffer_context; - detail::cf::vformat_to(detail::buffer_appender(buffer), cf, - make_format_args(args...)); - return to_string(buffer); -} template ::value)> FMT_INLINE std::basic_string format(const S&, Args&&... args) { -#ifdef __cpp_if_constexpr if constexpr (std::is_same::value) { - constexpr basic_string_view str = S(); - if (str.size() == 2 && str[0] == '{' && str[1] == '}') - return fmt::to_string(detail::first(args...)); + constexpr auto str = basic_string_view(S()); + if constexpr (str.size() == 2 && str[0] == '{' && str[1] == '}') { + const auto& first = detail::first(args...); + if constexpr (detail::is_named_arg< + remove_cvref_t>::value) { + return fmt::to_string(first.value); + } else { + return fmt::to_string(first); + } + } } + constexpr auto compiled = detail::compile(S()); + if constexpr (std::is_same, + detail::unknown_format>()) { + return format(static_cast>(S()), + std::forward(args)...); + } else { + return format(compiled, std::forward(args)...); + } +} + +template ::value)> +FMT_CONSTEXPR OutputIt format_to(OutputIt out, const S&, Args&&... args) { + constexpr auto compiled = detail::compile(S()); + if constexpr (std::is_same, + detail::unknown_format>()) { + return format_to(out, + static_cast>(S()), + std::forward(args)...); + } else { + return format_to(out, compiled, std::forward(args)...); + } +} #endif - constexpr auto compiled = detail::compile(S()); - return format(compiled, std::forward(args)...); -} - -template ::value)> -OutputIt format_to(OutputIt out, const CompiledFormat& cf, - const Args&... args) { - using char_type = typename CompiledFormat::char_type; - using context = format_context_t; - return detail::cf::vformat_to(out, cf, - make_format_args(args...)); -} template ::value)> -OutputIt format_to(OutputIt out, const S&, const Args&... args) { - constexpr auto compiled = detail::compile(S()); - return format_to(out, compiled, args...); -} - -template ::value&& - std::is_base_of::value)> format_to_n_result format_to_n(OutputIt out, size_t n, - const CompiledFormat& cf, - const Args&... args) { - auto it = - format_to(detail::truncating_iterator(out, n), cf, args...); + const S& format_str, Args&&... args) { + auto it = format_to(detail::truncating_iterator(out, n), format_str, + std::forward(args)...); return {it.base(), it.count()}; } -template ::value)> -format_to_n_result format_to_n(OutputIt out, size_t n, const S&, - const Args&... args) { - constexpr auto compiled = detail::compile(S()); - auto it = format_to(detail::truncating_iterator(out, n), compiled, - args...); - return {it.base(), it.count()}; +size_t formatted_size(const S& format_str, const Args&... args) { + return format_to(detail::counting_iterator(), format_str, args...).count(); } -template -size_t formatted_size(const CompiledFormat& cf, const Args&... args) { - return format_to(detail::counting_iterator(), cf, args...).count(); +template ::value)> +void print(std::FILE* f, const S& format_str, const Args&... args) { + memory_buffer buffer; + format_to(std::back_inserter(buffer), format_str, args...); + detail::print(f, {buffer.data(), buffer.size()}); } +template ::value)> +void print(const S& format_str, const Args&... args) { + print(stdout, format_str, args...); +} + +#if FMT_USE_NONTYPE_TEMPLATE_PARAMETERS +inline namespace literals { +template +constexpr detail::udl_compiled_string< + remove_cvref_t, + sizeof(Str.data) / sizeof(decltype(Str.data[0])), Str> +operator""_cf() { + return {}; +} +} // namespace literals +#endif + +FMT_MODULE_EXPORT_END FMT_END_NAMESPACE #endif // FMT_COMPILE_H_ diff --git a/Externals/fmt/include/fmt/core.h b/Externals/fmt/include/fmt/core.h index 2903be5a07..92a7aa1df6 100755 --- a/Externals/fmt/include/fmt/core.h +++ b/Externals/fmt/include/fmt/core.h @@ -1,4 +1,4 @@ -// Formatting library for C++ - the core API +// Formatting library for C++ - the core API for char/UTF-8 // // Copyright (c) 2012 - present, Victor Zverovich // All rights reserved. @@ -8,42 +8,47 @@ #ifndef FMT_CORE_H_ #define FMT_CORE_H_ -#include // std::FILE +#include // std::byte +#include // std::FILE #include -#include #include -#include +#include #include #include -#include // The fmt library version in the form major * 10000 + minor * 100 + patch. -#define FMT_VERSION 70100 +#define FMT_VERSION 80101 -#ifdef __clang__ +#if defined(__clang__) && !defined(__ibmxl__) # define FMT_CLANG_VERSION (__clang_major__ * 100 + __clang_minor__) #else # define FMT_CLANG_VERSION 0 #endif -#if defined(__GNUC__) && !defined(__clang__) +#if defined(__GNUC__) && !defined(__clang__) && !defined(__INTEL_COMPILER) && \ + !defined(__NVCOMPILER) # define FMT_GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__) #else # define FMT_GCC_VERSION 0 #endif -#if defined(__INTEL_COMPILER) +#ifndef FMT_GCC_PRAGMA +// Workaround _Pragma bug https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59884. +# if FMT_GCC_VERSION >= 504 +# define FMT_GCC_PRAGMA(arg) _Pragma(arg) +# else +# define FMT_GCC_PRAGMA(arg) +# endif +#endif + +#ifdef __ICL +# define FMT_ICC_VERSION __ICL +#elif defined(__INTEL_COMPILER) # define FMT_ICC_VERSION __INTEL_COMPILER #else # define FMT_ICC_VERSION 0 #endif -#if __cplusplus >= 201103L || defined(__GXX_EXPERIMENTAL_CXX0X__) -# define FMT_HAS_GXX_CXX11 FMT_GCC_VERSION -#else -# define FMT_HAS_GXX_CXX11 0 -#endif - #ifdef __NVCC__ # define FMT_NVCC __NVCC__ #else @@ -52,10 +57,10 @@ #ifdef _MSC_VER # define FMT_MSC_VER _MSC_VER -# define FMT_SUPPRESS_MSC_WARNING(n) __pragma(warning(suppress : n)) +# define FMT_MSC_WARNING(...) __pragma(warning(__VA_ARGS__)) #else # define FMT_MSC_VER 0 -# define FMT_SUPPRESS_MSC_WARNING(n) +# define FMT_MSC_WARNING(...) #endif #ifdef __has_feature @@ -64,7 +69,8 @@ # define FMT_HAS_FEATURE(x) 0 #endif -#if defined(__has_include) && !defined(__INTELLISENSE__) && \ +#if defined(__has_include) && \ + (!defined(__INTELLISENSE__) || FMT_MSC_VER > 1900) && \ (!FMT_ICC_VERSION || FMT_ICC_VERSION >= 1600) # define FMT_HAS_INCLUDE(x) __has_include(x) #else @@ -77,17 +83,23 @@ # define FMT_HAS_CPP_ATTRIBUTE(x) 0 #endif +#ifdef _MSVC_LANG +# define FMT_CPLUSPLUS _MSVC_LANG +#else +# define FMT_CPLUSPLUS __cplusplus +#endif + #define FMT_HAS_CPP14_ATTRIBUTE(attribute) \ - (__cplusplus >= 201402L && FMT_HAS_CPP_ATTRIBUTE(attribute)) + (FMT_CPLUSPLUS >= 201402L && FMT_HAS_CPP_ATTRIBUTE(attribute)) #define FMT_HAS_CPP17_ATTRIBUTE(attribute) \ - (__cplusplus >= 201703L && FMT_HAS_CPP_ATTRIBUTE(attribute)) + (FMT_CPLUSPLUS >= 201703L && FMT_HAS_CPP_ATTRIBUTE(attribute)) // Check if relaxed C++14 constexpr is supported. // GCC doesn't allow throw in constexpr until version 6 (bug 67371). #ifndef FMT_USE_CONSTEXPR # define FMT_USE_CONSTEXPR \ - (FMT_HAS_FEATURE(cxx_relaxed_constexpr) || FMT_MSC_VER >= 1910 || \ + (FMT_HAS_FEATURE(cxx_relaxed_constexpr) || FMT_MSC_VER >= 1912 || \ (FMT_GCC_VERSION >= 600 && __cplusplus >= 201402L)) && \ !FMT_NVCC && !FMT_ICC_VERSION #endif @@ -95,17 +107,32 @@ # define FMT_CONSTEXPR constexpr # define FMT_CONSTEXPR_DECL constexpr #else -# define FMT_CONSTEXPR inline +# define FMT_CONSTEXPR # define FMT_CONSTEXPR_DECL #endif -#ifndef FMT_OVERRIDE -# if FMT_HAS_FEATURE(cxx_override_control) || \ - (FMT_GCC_VERSION >= 408 && FMT_HAS_GXX_CXX11) || FMT_MSC_VER >= 1900 -# define FMT_OVERRIDE override -# else -# define FMT_OVERRIDE +#if ((__cplusplus >= 202002L) && \ + (!defined(_GLIBCXX_RELEASE) || _GLIBCXX_RELEASE > 9)) || \ + (__cplusplus >= 201709L && FMT_GCC_VERSION >= 1002) +# define FMT_CONSTEXPR20 constexpr +#else +# define FMT_CONSTEXPR20 +#endif + +// Check if constexpr std::char_traits<>::compare,length is supported. +#if defined(__GLIBCXX__) +# if __cplusplus >= 201703L && defined(_GLIBCXX_RELEASE) && \ + _GLIBCXX_RELEASE >= 7 // GCC 7+ libstdc++ has _GLIBCXX_RELEASE. +# define FMT_CONSTEXPR_CHAR_TRAITS constexpr # endif +#elif defined(_LIBCPP_VERSION) && __cplusplus >= 201703L && \ + _LIBCPP_VERSION >= 4000 +# define FMT_CONSTEXPR_CHAR_TRAITS constexpr +#elif FMT_MSC_VER >= 1914 && _MSVC_LANG >= 201703L +# define FMT_CONSTEXPR_CHAR_TRAITS constexpr +#endif +#ifndef FMT_CONSTEXPR_CHAR_TRAITS +# define FMT_CONSTEXPR_CHAR_TRAITS #endif // Check if exceptions are disabled. @@ -124,7 +151,7 @@ #endif #if FMT_USE_NOEXCEPT || FMT_HAS_FEATURE(cxx_noexcept) || \ - (FMT_GCC_VERSION >= 408 && FMT_HAS_GXX_CXX11) || FMT_MSC_VER >= 1900 + FMT_GCC_VERSION >= 408 || FMT_MSC_VER >= 1900 # define FMT_DETECTED_NOEXCEPT noexcept # define FMT_HAS_CXX11_NOEXCEPT 1 #else @@ -149,6 +176,49 @@ # define FMT_NORETURN #endif +#if __cplusplus == 201103L || __cplusplus == 201402L +# if defined(__INTEL_COMPILER) || defined(__PGI) +# define FMT_FALLTHROUGH +# elif defined(__clang__) +# define FMT_FALLTHROUGH [[clang::fallthrough]] +# elif FMT_GCC_VERSION >= 700 && \ + (!defined(__EDG_VERSION__) || __EDG_VERSION__ >= 520) +# define FMT_FALLTHROUGH [[gnu::fallthrough]] +# else +# define FMT_FALLTHROUGH +# endif +#elif FMT_HAS_CPP17_ATTRIBUTE(fallthrough) +# define FMT_FALLTHROUGH [[fallthrough]] +#else +# define FMT_FALLTHROUGH +#endif + +#ifndef FMT_NODISCARD +# if FMT_HAS_CPP17_ATTRIBUTE(nodiscard) +# define FMT_NODISCARD [[nodiscard]] +# else +# define FMT_NODISCARD +# endif +#endif + +#ifndef FMT_USE_FLOAT +# define FMT_USE_FLOAT 1 +#endif +#ifndef FMT_USE_DOUBLE +# define FMT_USE_DOUBLE 1 +#endif +#ifndef FMT_USE_LONG_DOUBLE +# define FMT_USE_LONG_DOUBLE 1 +#endif + +#ifndef FMT_INLINE +# if FMT_GCC_VERSION || FMT_CLANG_VERSION +# define FMT_INLINE inline __attribute__((always_inline)) +# else +# define FMT_INLINE inline +# endif +#endif + #ifndef FMT_DEPRECATED # if FMT_HAS_CPP14_ATTRIBUTE(deprecated) || FMT_MSC_VER >= 1900 # define FMT_DEPRECATED [[deprecated]] @@ -163,76 +233,41 @@ # endif #endif -// Workaround broken [[deprecated]] in the Intel, PGI and NVCC compilers. -#if FMT_ICC_VERSION || defined(__PGI) || FMT_NVCC -# define FMT_DEPRECATED_ALIAS -#else -# define FMT_DEPRECATED_ALIAS FMT_DEPRECATED -#endif - -#ifndef FMT_INLINE -# if FMT_GCC_VERSION || FMT_CLANG_VERSION -# define FMT_INLINE inline __attribute__((always_inline)) -# else -# define FMT_INLINE inline -# endif -#endif - -#ifndef FMT_USE_INLINE_NAMESPACES -# if FMT_HAS_FEATURE(cxx_inline_namespaces) || FMT_GCC_VERSION >= 404 || \ - (FMT_MSC_VER >= 1900 && !_MANAGED) -# define FMT_USE_INLINE_NAMESPACES 1 -# else -# define FMT_USE_INLINE_NAMESPACES 0 -# endif -#endif - #ifndef FMT_BEGIN_NAMESPACE -# if FMT_USE_INLINE_NAMESPACES -# define FMT_INLINE_NAMESPACE inline namespace -# define FMT_END_NAMESPACE \ - } \ - } -# else -# define FMT_INLINE_NAMESPACE namespace -# define FMT_END_NAMESPACE \ - } \ - using namespace v7; \ - } -# endif # define FMT_BEGIN_NAMESPACE \ namespace fmt { \ - FMT_INLINE_NAMESPACE v7 { + inline namespace v8 { +# define FMT_END_NAMESPACE \ + } \ + } +#endif + +#ifndef FMT_MODULE_EXPORT +# define FMT_MODULE_EXPORT +# define FMT_MODULE_EXPORT_BEGIN +# define FMT_MODULE_EXPORT_END +# define FMT_BEGIN_DETAIL_NAMESPACE namespace detail { +# define FMT_END_DETAIL_NAMESPACE } #endif #if !defined(FMT_HEADER_ONLY) && defined(_WIN32) -# define FMT_CLASS_API FMT_SUPPRESS_MSC_WARNING(4275) +# define FMT_CLASS_API FMT_MSC_WARNING(suppress : 4275) # ifdef FMT_EXPORT # define FMT_API __declspec(dllexport) -# define FMT_EXTERN_TEMPLATE_API FMT_API -# define FMT_EXPORTED # elif defined(FMT_SHARED) # define FMT_API __declspec(dllimport) -# define FMT_EXTERN_TEMPLATE_API FMT_API # endif #else # define FMT_CLASS_API +# if defined(FMT_EXPORT) || defined(FMT_SHARED) +# if defined(__GNUC__) || defined(__clang__) +# define FMT_API __attribute__((visibility("default"))) +# endif +# endif #endif #ifndef FMT_API # define FMT_API #endif -#ifndef FMT_EXTERN_TEMPLATE_API -# define FMT_EXTERN_TEMPLATE_API -#endif -#ifndef FMT_INSTANTIATION_DEF_API -# define FMT_INSTANTIATION_DEF_API FMT_API -#endif - -#ifndef FMT_HEADER_ONLY -# define FMT_EXTERN extern -#else -# define FMT_EXTERN -#endif // libc++ supports string_view in pre-c++17. #if (FMT_HAS_INCLUDE() && \ @@ -248,16 +283,43 @@ #ifndef FMT_UNICODE # define FMT_UNICODE !FMT_MSC_VER #endif -#if FMT_UNICODE && FMT_MSC_VER -# pragma execution_character_set("utf-8") + +#ifndef FMT_CONSTEVAL +# if ((FMT_GCC_VERSION >= 1000 || FMT_CLANG_VERSION >= 1101) && \ + __cplusplus > 201703L && !defined(__apple_build_version__)) || \ + (defined(__cpp_consteval) && \ + (!FMT_MSC_VER || _MSC_FULL_VER >= 193030704)) +// consteval is broken in MSVC before VS2022 and Apple clang 13. +# define FMT_CONSTEVAL consteval +# define FMT_HAS_CONSTEVAL +# else +# define FMT_CONSTEVAL +# endif +#endif + +#ifndef FMT_USE_NONTYPE_TEMPLATE_PARAMETERS +# if defined(__cpp_nontype_template_args) && \ + ((FMT_GCC_VERSION >= 903 && __cplusplus >= 201709L) || \ + __cpp_nontype_template_args >= 201911L) +# define FMT_USE_NONTYPE_TEMPLATE_PARAMETERS 1 +# else +# define FMT_USE_NONTYPE_TEMPLATE_PARAMETERS 0 +# endif +#endif + +// Enable minimal optimizations for more compact code in debug mode. +FMT_GCC_PRAGMA("GCC push_options") +#ifndef __OPTIMIZE__ +FMT_GCC_PRAGMA("GCC optimize(\"Og\")") #endif FMT_BEGIN_NAMESPACE +FMT_MODULE_EXPORT_BEGIN // Implementations of enable_if_t and other metafunctions for older systems. -template +template using enable_if_t = typename std::enable_if::type; -template +template using conditional_t = typename std::conditional::type; template using bool_constant = std::integral_constant; template @@ -269,17 +331,40 @@ using remove_cvref_t = typename std::remove_cv>::type; template struct type_identity { using type = T; }; template using type_identity_t = typename type_identity::type; -struct monostate {}; +struct monostate { + constexpr monostate() {} +}; // An enable_if helper to be used in template parameters which results in much // shorter symbols: https://godbolt.org/z/sWw4vP. Extra parentheses are needed // to workaround a bug in MSVC 2019 (see #1140 and #1186). -#define FMT_ENABLE_IF(...) enable_if_t<(__VA_ARGS__), int> = 0 +#ifdef FMT_DOC +# define FMT_ENABLE_IF(...) +#else +# define FMT_ENABLE_IF(...) enable_if_t<(__VA_ARGS__), int> = 0 +#endif -namespace detail { +FMT_BEGIN_DETAIL_NAMESPACE -// A helper function to suppress "conditional expression is constant" warnings. -template constexpr T const_check(T value) { return value; } +// Suppress "unused variable" warnings with the method described in +// https://herbsutter.com/2009/10/18/mailbag-shutting-up-compiler-warnings/. +// (void)var does not work on many Intel compilers. +template FMT_CONSTEXPR void ignore_unused(const T&...) {} + +constexpr FMT_INLINE auto is_constant_evaluated(bool default_value = false) + FMT_NOEXCEPT -> bool { +#ifdef __cpp_lib_is_constant_evaluated + ignore_unused(default_value); + return std::is_constant_evaluated(); +#else + return default_value; +#endif +} + +// A function to suppress "conditional expression is constant" warnings. +template constexpr FMT_INLINE auto const_check(T value) -> T { + return value; +} FMT_NORETURN FMT_API void assert_fail(const char* file, int line, const char* message); @@ -287,7 +372,8 @@ FMT_NORETURN FMT_API void assert_fail(const char* file, int line, #ifndef FMT_ASSERT # ifdef NDEBUG // FMT_ASSERT is not empty to avoid -Werror=empty-body. -# define FMT_ASSERT(condition, message) ((void)0) +# define FMT_ASSERT(condition, message) \ + ::fmt::detail::ignore_unused((condition), (message)) # else # define FMT_ASSERT(condition, message) \ ((condition) /* void() fails with -Winvalid-constexpr on clang 4.0.1 */ \ @@ -296,6 +382,12 @@ FMT_NORETURN FMT_API void assert_fail(const char* file, int line, # endif #endif +#ifdef __cpp_lib_byte +using byte = std::byte; +#else +enum class byte : unsigned char {}; +#endif + #if defined(FMT_USE_STRING_VIEW) template using std_string_view = std::basic_string_view; #elif defined(FMT_USE_EXPERIMENTAL_STRING_VIEW) @@ -312,38 +404,39 @@ template struct std_string_view {}; # define FMT_USE_INT128 1 using int128_t = __int128_t; using uint128_t = __uint128_t; +template inline auto convert_for_visit(T value) -> T { + return value; +} #else # define FMT_USE_INT128 0 #endif #if !FMT_USE_INT128 -struct int128_t {}; -struct uint128_t {}; +enum class int128_t {}; +enum class uint128_t {}; +// Reduce template instantiations. +template inline auto convert_for_visit(T) -> monostate { + return {}; +} #endif // Casts a nonnegative integer to unsigned. template -FMT_CONSTEXPR typename std::make_unsigned::type to_unsigned(Int value) { +FMT_CONSTEXPR auto to_unsigned(Int value) -> + typename std::make_unsigned::type { FMT_ASSERT(value >= 0, "negative value"); return static_cast::type>(value); } -FMT_SUPPRESS_MSC_WARNING(4566) constexpr unsigned char micro[] = "\u00B5"; +FMT_MSC_WARNING(suppress : 4566) constexpr unsigned char micro[] = "\u00B5"; -template constexpr bool is_unicode() { - return FMT_UNICODE || sizeof(Char) != 1 || - (sizeof(micro) == 3 && micro[0] == 0xC2 && micro[1] == 0xB5); +constexpr auto is_utf8() -> bool { + // Avoid buggy sign extensions in MSVC's constant evaluation mode. + // https://developercommunity.visualstudio.com/t/C-difference-in-behavior-for-unsigned/1233612 + using uchar = unsigned char; + return FMT_UNICODE || (sizeof(micro) == 3 && uchar(micro[0]) == 0xC2 && + uchar(micro[1]) == 0xB5); } - -#ifdef __cpp_char8_t -using char8_type = char8_t; -#else -enum char8_type : unsigned char {}; -#endif -} // namespace detail - -#ifdef FMT_USE_INTERNAL -namespace internal = detail; // DEPRECATED -#endif +FMT_END_DETAIL_NAMESPACE /** An implementation of ``std::basic_string_view`` for pre-C++17. It provides a @@ -374,11 +467,14 @@ template class basic_string_view { the size with ``std::char_traits::length``. \endrst */ -#if __cplusplus >= 201703L // C++17's char_traits::length() is constexpr. - FMT_CONSTEXPR -#endif + FMT_CONSTEXPR_CHAR_TRAITS + FMT_INLINE basic_string_view(const Char* s) - : data_(s), size_(std::char_traits::length(s)) {} + : data_(s), + size_(detail::const_check(std::is_same::value && + !detail::is_constant_evaluated(true)) + ? std::strlen(reinterpret_cast(s)) + : std::char_traits::length(s)) {} /** Constructs a string reference from a ``std::basic_string`` object. */ template @@ -393,23 +489,25 @@ template class basic_string_view { size_(s.size()) {} /** Returns a pointer to the string data. */ - constexpr const Char* data() const { return data_; } + constexpr auto data() const FMT_NOEXCEPT -> const Char* { return data_; } /** Returns the string size. */ - constexpr size_t size() const { return size_; } + constexpr auto size() const FMT_NOEXCEPT -> size_t { return size_; } - constexpr iterator begin() const { return data_; } - constexpr iterator end() const { return data_ + size_; } + constexpr auto begin() const FMT_NOEXCEPT -> iterator { return data_; } + constexpr auto end() const FMT_NOEXCEPT -> iterator { return data_ + size_; } - constexpr const Char& operator[](size_t pos) const { return data_[pos]; } + constexpr auto operator[](size_t pos) const FMT_NOEXCEPT -> const Char& { + return data_[pos]; + } - FMT_CONSTEXPR void remove_prefix(size_t n) { + FMT_CONSTEXPR void remove_prefix(size_t n) FMT_NOEXCEPT { data_ += n; size_ -= n; } // Lexicographically compare this string reference to other. - int compare(basic_string_view other) const { + FMT_CONSTEXPR_CHAR_TRAITS auto compare(basic_string_view other) const -> int { size_t str_size = size_ < other.size_ ? size_ : other.size_; int result = std::char_traits::compare(data_, other.data_, str_size); if (result == 0) @@ -417,72 +515,53 @@ template class basic_string_view { return result; } - friend bool operator==(basic_string_view lhs, basic_string_view rhs) { + FMT_CONSTEXPR_CHAR_TRAITS friend auto operator==(basic_string_view lhs, + basic_string_view rhs) + -> bool { return lhs.compare(rhs) == 0; } - friend bool operator!=(basic_string_view lhs, basic_string_view rhs) { + friend auto operator!=(basic_string_view lhs, basic_string_view rhs) -> bool { return lhs.compare(rhs) != 0; } - friend bool operator<(basic_string_view lhs, basic_string_view rhs) { + friend auto operator<(basic_string_view lhs, basic_string_view rhs) -> bool { return lhs.compare(rhs) < 0; } - friend bool operator<=(basic_string_view lhs, basic_string_view rhs) { + friend auto operator<=(basic_string_view lhs, basic_string_view rhs) -> bool { return lhs.compare(rhs) <= 0; } - friend bool operator>(basic_string_view lhs, basic_string_view rhs) { + friend auto operator>(basic_string_view lhs, basic_string_view rhs) -> bool { return lhs.compare(rhs) > 0; } - friend bool operator>=(basic_string_view lhs, basic_string_view rhs) { + friend auto operator>=(basic_string_view lhs, basic_string_view rhs) -> bool { return lhs.compare(rhs) >= 0; } }; using string_view = basic_string_view; -using wstring_view = basic_string_view; /** Specifies if ``T`` is a character type. Can be specialized by users. */ template struct is_char : std::false_type {}; template <> struct is_char : std::true_type {}; -template <> struct is_char : std::true_type {}; -template <> struct is_char : std::true_type {}; -template <> struct is_char : std::true_type {}; -template <> struct is_char : std::true_type {}; -/** - \rst - Returns a string view of `s`. In order to add custom string type support to - {fmt} provide an overload of `to_string_view` for it in the same namespace as - the type for the argument-dependent lookup to work. - - **Example**:: - - namespace my_ns { - inline string_view to_string_view(const my_string& s) { - return {s.data(), s.length()}; - } - } - std::string message = fmt::format(my_string("The answer is {}"), 42); - \endrst - */ +// Returns a string view of `s`. template ::value)> -inline basic_string_view to_string_view(const Char* s) { +FMT_INLINE auto to_string_view(const Char* s) -> basic_string_view { return s; } - template -inline basic_string_view to_string_view( - const std::basic_string& s) { +inline auto to_string_view(const std::basic_string& s) + -> basic_string_view { return s; } - template -inline basic_string_view to_string_view(basic_string_view s) { +constexpr auto to_string_view(basic_string_view s) + -> basic_string_view { return s; } - template >::value)> -inline basic_string_view to_string_view(detail::std_string_view s) { +inline auto to_string_view(detail::std_string_view s) + -> basic_string_view { return s; } @@ -494,13 +573,15 @@ template struct is_compile_string : std::is_base_of {}; template ::value)> -constexpr basic_string_view to_string_view(const S& s) { - return s; +constexpr auto to_string_view(const S& s) + -> basic_string_view { + return basic_string_view(s); } -namespace detail { +FMT_BEGIN_DETAIL_NAMESPACE + void to_string_view(...); -using fmt::v7::to_string_view; +using fmt::to_string_view; // Specifies whether S is a string type convertible to fmt::basic_string_view. // It should be a constexpr function but MSVC 2017 fails to compile it in @@ -527,6 +608,8 @@ FMT_INLINE void check_format_string(const S&) { template ::value)> void check_format_string(S); +FMT_NORETURN FMT_API void throw_format_error(const char* message); + struct error_handler { constexpr error_handler() = default; constexpr error_handler(const error_handler&) = default; @@ -534,7 +617,7 @@ struct error_handler { // This function is intentionally not constexpr to give a compile-time error. FMT_NORETURN FMT_API void on_error(const char* message); }; -} // namespace detail +FMT_END_DETAIL_NAMESPACE /** String's character type. */ template using char_t = typename detail::char_t_impl::type; @@ -543,16 +626,7 @@ template using char_t = typename detail::char_t_impl::type; \rst Parsing context consisting of a format string range being parsed and an argument counter for automatic indexing. - - You can use one of the following type aliases for common character types: - - +-----------------------+-------------------------------------+ - | Type | Definition | - +=======================+=====================================+ - | format_parse_context | basic_format_parse_context | - +-----------------------+-------------------------------------+ - | wformat_parse_context | basic_format_parse_context | - +-----------------------+-------------------------------------+ + You can use the ``format_parse_context`` type alias for ``char`` instead. \endrst */ template @@ -574,12 +648,16 @@ class basic_format_parse_context : private ErrorHandler { Returns an iterator to the beginning of the format string range being parsed. */ - constexpr iterator begin() const FMT_NOEXCEPT { return format_str_.begin(); } + constexpr auto begin() const FMT_NOEXCEPT -> iterator { + return format_str_.begin(); + } /** Returns an iterator past the end of the format string range being parsed. */ - constexpr iterator end() const FMT_NOEXCEPT { return format_str_.end(); } + constexpr auto end() const FMT_NOEXCEPT -> iterator { + return format_str_.end(); + } /** Advances the begin iterator to ``it``. */ FMT_CONSTEXPR void advance_to(iterator it) { @@ -590,7 +668,7 @@ class basic_format_parse_context : private ErrorHandler { Reports an error if using the manual argument indexing; otherwise returns the next argument index and switches to the automatic indexing. */ - FMT_CONSTEXPR int next_arg_id() { + FMT_CONSTEXPR auto next_arg_id() -> int { // Don't check if the argument id is valid to avoid overhead and because it // will be checked during formatting anyway. if (next_arg_id_ >= 0) return next_arg_id_++; @@ -615,11 +693,10 @@ class basic_format_parse_context : private ErrorHandler { ErrorHandler::on_error(message); } - constexpr ErrorHandler error_handler() const { return *this; } + constexpr auto error_handler() const -> ErrorHandler { return *this; } }; using format_parse_context = basic_format_parse_context; -using wformat_parse_context = basic_format_parse_context; template class basic_format_arg; template class basic_format_args; @@ -643,11 +720,30 @@ template struct is_contiguous : std::false_type {}; template struct is_contiguous> : std::true_type {}; -namespace detail { +class appender; + +FMT_BEGIN_DETAIL_NAMESPACE + +template +constexpr auto has_const_formatter_impl(T*) + -> decltype(typename Context::template formatter_type().format( + std::declval(), std::declval()), + true) { + return true; +} +template +constexpr auto has_const_formatter_impl(...) -> bool { + return false; +} +template +constexpr auto has_const_formatter() -> bool { + return has_const_formatter_impl(static_cast(nullptr)); +} // Extracts a reference to the container from back_insert_iterator. template -inline Container& get_container(std::back_insert_iterator it) { +inline auto get_container(std::back_insert_iterator it) + -> Container& { using bi_iterator = std::back_insert_iterator; struct accessor : bi_iterator { accessor(bi_iterator iter) : bi_iterator(iter) {} @@ -656,6 +752,23 @@ inline Container& get_container(std::back_insert_iterator it) { return *accessor(it).container; } +template +FMT_CONSTEXPR auto copy_str(InputIt begin, InputIt end, OutputIt out) + -> OutputIt { + while (begin != end) *out++ = static_cast(*begin++); + return out; +} + +template , U>::value&& is_char::value)> +FMT_CONSTEXPR auto copy_str(T* begin, T* end, U* out) -> U* { + if (is_constant_evaluated()) return copy_str(begin, end, out); + auto size = to_unsigned(end - begin); + memcpy(out, begin, size * sizeof(U)); + return out + size; +} + /** \rst A contiguous memory buffer with an optional growing ability. It is an internal @@ -670,24 +783,25 @@ template class buffer { protected: // Don't initialize ptr_ since it is not accessed to save a few cycles. - FMT_SUPPRESS_MSC_WARNING(26495) + FMT_MSC_WARNING(suppress : 26495) buffer(size_t sz) FMT_NOEXCEPT : size_(sz), capacity_(sz) {} - buffer(T* p = nullptr, size_t sz = 0, size_t cap = 0) FMT_NOEXCEPT - : ptr_(p), - size_(sz), - capacity_(cap) {} + FMT_CONSTEXPR20 buffer(T* p = nullptr, size_t sz = 0, + size_t cap = 0) FMT_NOEXCEPT : ptr_(p), + size_(sz), + capacity_(cap) {} - ~buffer() = default; + FMT_CONSTEXPR20 ~buffer() = default; + buffer(buffer&&) = default; /** Sets the buffer data and capacity. */ - void set(T* buf_data, size_t buf_capacity) FMT_NOEXCEPT { + FMT_CONSTEXPR void set(T* buf_data, size_t buf_capacity) FMT_NOEXCEPT { ptr_ = buf_data; capacity_ = buf_capacity; } /** Increases the buffer capacity to hold at least *capacity* elements. */ - virtual void grow(size_t capacity) = 0; + virtual FMT_CONSTEXPR20 void grow(size_t capacity) = 0; public: using value_type = T; @@ -696,30 +810,30 @@ template class buffer { buffer(const buffer&) = delete; void operator=(const buffer&) = delete; - T* begin() FMT_NOEXCEPT { return ptr_; } - T* end() FMT_NOEXCEPT { return ptr_ + size_; } + auto begin() FMT_NOEXCEPT -> T* { return ptr_; } + auto end() FMT_NOEXCEPT -> T* { return ptr_ + size_; } - const T* begin() const FMT_NOEXCEPT { return ptr_; } - const T* end() const FMT_NOEXCEPT { return ptr_ + size_; } + auto begin() const FMT_NOEXCEPT -> const T* { return ptr_; } + auto end() const FMT_NOEXCEPT -> const T* { return ptr_ + size_; } /** Returns the size of this buffer. */ - size_t size() const FMT_NOEXCEPT { return size_; } + constexpr auto size() const FMT_NOEXCEPT -> size_t { return size_; } /** Returns the capacity of this buffer. */ - size_t capacity() const FMT_NOEXCEPT { return capacity_; } + constexpr auto capacity() const FMT_NOEXCEPT -> size_t { return capacity_; } /** Returns a pointer to the buffer data. */ - T* data() FMT_NOEXCEPT { return ptr_; } + FMT_CONSTEXPR auto data() FMT_NOEXCEPT -> T* { return ptr_; } /** Returns a pointer to the buffer data. */ - const T* data() const FMT_NOEXCEPT { return ptr_; } + FMT_CONSTEXPR auto data() const FMT_NOEXCEPT -> const T* { return ptr_; } /** Clears this buffer. */ void clear() { size_ = 0; } // Tries resizing the buffer to contain *count* elements. If T is a POD type // the new elements may not be initialized. - void try_resize(size_t count) { + FMT_CONSTEXPR20 void try_resize(size_t count) { try_reserve(count); size_ = count <= capacity_ ? count : capacity_; } @@ -728,11 +842,11 @@ template class buffer { // capacity by a smaller amount than requested but guarantees there is space // for at least one additional element either by increasing the capacity or by // flushing the buffer if it is full. - void try_reserve(size_t new_capacity) { + FMT_CONSTEXPR20 void try_reserve(size_t new_capacity) { if (new_capacity > capacity_) grow(new_capacity); } - void push_back(const T& value) { + FMT_CONSTEXPR20 void push_back(const T& value) { try_reserve(size_ + 1); ptr_[size_++] = value; } @@ -740,16 +854,19 @@ template class buffer { /** Appends data to the end of the buffer. */ template void append(const U* begin, const U* end); - template T& operator[](I index) { return ptr_[index]; } - template const T& operator[](I index) const { + template FMT_CONSTEXPR auto operator[](I index) -> T& { + return ptr_[index]; + } + template + FMT_CONSTEXPR auto operator[](I index) const -> const T& { return ptr_[index]; } }; struct buffer_traits { explicit buffer_traits(size_t) {} - size_t count() const { return 0; } - size_t limit(size_t size) { return size; } + auto count() const -> size_t { return 0; } + auto limit(size_t size) -> size_t { return size; } }; class fixed_buffer_traits { @@ -759,9 +876,9 @@ class fixed_buffer_traits { public: explicit fixed_buffer_traits(size_t limit) : limit_(limit) {} - size_t count() const { return count_; } - size_t limit(size_t size) { - size_t n = limit_ - count_; + auto count() const -> size_t { return count_; } + auto limit(size_t size) -> size_t { + size_t n = limit_ > count_ ? limit_ - count_ : 0; count_ += size; return size < n ? size : n; } @@ -776,33 +893,84 @@ class iterator_buffer final : public Traits, public buffer { T data_[buffer_size]; protected: - void grow(size_t) final FMT_OVERRIDE { + FMT_CONSTEXPR20 void grow(size_t) override { if (this->size() == buffer_size) flush(); } - void flush(); + + void flush() { + auto size = this->size(); + this->clear(); + out_ = copy_str(data_, data_ + this->limit(size), out_); + } public: explicit iterator_buffer(OutputIt out, size_t n = buffer_size) - : Traits(n), - buffer(data_, 0, n < size_t(buffer_size) ? n : size_t(buffer_size)), - out_(out) {} + : Traits(n), buffer(data_, 0, buffer_size), out_(out) {} + iterator_buffer(iterator_buffer&& other) + : Traits(other), buffer(data_, 0, buffer_size), out_(other.out_) {} ~iterator_buffer() { flush(); } - OutputIt out() { + auto out() -> OutputIt { flush(); return out_; } - size_t count() const { return Traits::count() + this->size(); } + auto count() const -> size_t { return Traits::count() + this->size(); } +}; + +template +class iterator_buffer final + : public fixed_buffer_traits, + public buffer { + private: + T* out_; + enum { buffer_size = 256 }; + T data_[buffer_size]; + + protected: + FMT_CONSTEXPR20 void grow(size_t) override { + if (this->size() == this->capacity()) flush(); + } + + void flush() { + size_t n = this->limit(this->size()); + if (this->data() == out_) { + out_ += n; + this->set(data_, buffer_size); + } + this->clear(); + } + + public: + explicit iterator_buffer(T* out, size_t n = buffer_size) + : fixed_buffer_traits(n), buffer(out, 0, n), out_(out) {} + iterator_buffer(iterator_buffer&& other) + : fixed_buffer_traits(other), + buffer(std::move(other)), + out_(other.out_) { + if (this->data() != out_) { + this->set(data_, buffer_size); + this->clear(); + } + } + ~iterator_buffer() { flush(); } + + auto out() -> T* { + flush(); + return out_; + } + auto count() const -> size_t { + return fixed_buffer_traits::count() + this->size(); + } }; template class iterator_buffer final : public buffer { protected: - void grow(size_t) final FMT_OVERRIDE {} + FMT_CONSTEXPR20 void grow(size_t) override {} public: explicit iterator_buffer(T* out, size_t = 0) : buffer(out, 0, ~size_t()) {} - T* out() { return &*this->end(); } + auto out() -> T* { return &*this->end(); } }; // A buffer that writes to a container with the contiguous storage. @@ -815,7 +983,7 @@ class iterator_buffer, Container& container_; protected: - void grow(size_t capacity) final FMT_OVERRIDE { + FMT_CONSTEXPR20 void grow(size_t capacity) override { container_.resize(capacity); this->set(&container_[0], capacity); } @@ -825,7 +993,7 @@ class iterator_buffer, : buffer(c.size()), container_(c) {} explicit iterator_buffer(std::back_insert_iterator out, size_t = 0) : iterator_buffer(get_container(out)) {} - std::back_insert_iterator out() { + auto out() -> std::back_insert_iterator { return std::back_inserter(container_); } }; @@ -838,7 +1006,7 @@ template class counting_buffer final : public buffer { size_t count_ = 0; protected: - void grow(size_t) final FMT_OVERRIDE { + FMT_CONSTEXPR20 void grow(size_t) override { if (this->size() != buffer_size) return; count_ += this->size(); this->clear(); @@ -847,48 +1015,24 @@ template class counting_buffer final : public buffer { public: counting_buffer() : buffer(data_, 0, buffer_size) {} - size_t count() { return count_ + this->size(); } + auto count() -> size_t { return count_ + this->size(); } }; -// An output iterator that appends to the buffer. -// It is used to reduce symbol sizes for the common case. template -class buffer_appender : public std::back_insert_iterator> { - using base = std::back_insert_iterator>; +using buffer_appender = conditional_t::value, appender, + std::back_insert_iterator>>; - public: - explicit buffer_appender(buffer& buf) : base(buf) {} - buffer_appender(base it) : base(it) {} - - buffer_appender& operator++() { - base::operator++(); - return *this; - } - - buffer_appender operator++(int) { - buffer_appender tmp = *this; - ++*this; - return tmp; - } -}; - -// Maps an output iterator into a buffer. +// Maps an output iterator to a buffer. template -iterator_buffer get_buffer(OutputIt); -template buffer& get_buffer(buffer_appender); - -template OutputIt get_buffer_init(OutputIt out) { - return out; -} -template buffer& get_buffer_init(buffer_appender out) { - return get_container(out); +auto get_buffer(OutputIt out) -> iterator_buffer { + return iterator_buffer(out); } template auto get_iterator(Buffer& buf) -> decltype(buf.out()) { return buf.out(); } -template buffer_appender get_iterator(buffer& buf) { +template auto get_iterator(buffer& buf) -> buffer_appender { return buffer_appender(buf); } @@ -898,9 +1042,9 @@ struct fallback_formatter { }; // Specifies if T has an enabled fallback_formatter specialization. -template +template using has_fallback_formatter = - std::is_constructible>; + std::is_constructible>; struct view {}; @@ -925,8 +1069,8 @@ struct arg_data { template arg_data(const U&... init) : args_{T(named_args_, NUM_NAMED_ARGS), init...} {} arg_data(const arg_data& other) = delete; - const T* args() const { return args_ + 1; } - named_arg_info* named_args() { return named_args_; } + auto args() const -> const T* { return args_ + 1; } + auto named_args() -> named_arg_info* { return named_args_; } }; template @@ -935,45 +1079,55 @@ struct arg_data { T args_[NUM_ARGS != 0 ? NUM_ARGS : +1]; template - FMT_INLINE arg_data(const U&... init) : args_{init...} {} - FMT_INLINE const T* args() const { return args_; } - FMT_INLINE std::nullptr_t named_args() { return nullptr; } + FMT_CONSTEXPR FMT_INLINE arg_data(const U&... init) : args_{init...} {} + FMT_CONSTEXPR FMT_INLINE auto args() const -> const T* { return args_; } + FMT_CONSTEXPR FMT_INLINE auto named_args() -> std::nullptr_t { + return nullptr; + } }; template inline void init_named_args(named_arg_info*, int, int) {} -template +template struct is_named_arg : std::false_type {}; +template struct is_statically_named_arg : std::false_type {}; + +template +struct is_named_arg> : std::true_type {}; + +template ::value)> void init_named_args(named_arg_info* named_args, int arg_count, int named_arg_count, const T&, const Tail&... args) { init_named_args(named_args, arg_count + 1, named_arg_count, args...); } -template +template ::value)> void init_named_args(named_arg_info* named_args, int arg_count, - int named_arg_count, const named_arg& arg, - const Tail&... args) { + int named_arg_count, const T& arg, const Tail&... args) { named_args[named_arg_count++] = {arg.name, arg_count}; init_named_args(named_args, arg_count + 1, named_arg_count, args...); } template -FMT_INLINE void init_named_args(std::nullptr_t, int, int, const Args&...) {} +FMT_CONSTEXPR FMT_INLINE void init_named_args(std::nullptr_t, int, int, + const Args&...) {} -template struct is_named_arg : std::false_type {}; - -template -struct is_named_arg> : std::true_type {}; - -template constexpr size_t count() { return B ? 1 : 0; } -template constexpr size_t count() { +template constexpr auto count() -> size_t { return B ? 1 : 0; } +template constexpr auto count() -> size_t { return (B1 ? 1 : 0) + count(); } -template constexpr size_t count_named_args() { +template constexpr auto count_named_args() -> size_t { return count::value...>(); } +template +constexpr auto count_statically_named_args() -> size_t { + return count::value...>(); +} + enum class type { none_type, // Integer types should go first, @@ -1029,6 +1183,11 @@ constexpr bool is_arithmetic_type(type t) { return t > type::none_type && t <= type::last_numeric_type; } +struct unformattable {}; +struct unformattable_char : unformattable {}; +struct unformattable_const : unformattable {}; +struct unformattable_pointer : unformattable {}; + template struct string_value { const Char* data; size_t size; @@ -1041,8 +1200,8 @@ template struct named_arg_value { template struct custom_value { using parse_context = typename Context::parse_context_type; - const void* value; - void (*format)(const void* arg, parse_context& parse_ctx, Context& ctx); + void* value; + void (*format)(void* arg, parse_context& parse_ctx, Context& ctx); }; // A formatting argument value. @@ -1051,6 +1210,7 @@ template class value { using char_type = typename Context::char_type; union { + monostate no_value; int int_value; unsigned uint_value; long long long_long_value; @@ -1068,19 +1228,23 @@ template class value { named_arg_value named_args; }; - constexpr FMT_INLINE value(int val = 0) : int_value(val) {} + constexpr FMT_INLINE value() : no_value() {} + constexpr FMT_INLINE value(int val) : int_value(val) {} constexpr FMT_INLINE value(unsigned val) : uint_value(val) {} - FMT_INLINE value(long long val) : long_long_value(val) {} - FMT_INLINE value(unsigned long long val) : ulong_long_value(val) {} + constexpr FMT_INLINE value(long long val) : long_long_value(val) {} + constexpr FMT_INLINE value(unsigned long long val) : ulong_long_value(val) {} FMT_INLINE value(int128_t val) : int128_value(val) {} FMT_INLINE value(uint128_t val) : uint128_value(val) {} - FMT_INLINE value(float val) : float_value(val) {} - FMT_INLINE value(double val) : double_value(val) {} + constexpr FMT_INLINE value(float val) : float_value(val) {} + constexpr FMT_INLINE value(double val) : double_value(val) {} FMT_INLINE value(long double val) : long_double_value(val) {} - FMT_INLINE value(bool val) : bool_value(val) {} - FMT_INLINE value(char_type val) : char_value(val) {} - FMT_INLINE value(const char_type* val) { string.data = val; } - FMT_INLINE value(basic_string_view val) { + constexpr FMT_INLINE value(bool val) : bool_value(val) {} + constexpr FMT_INLINE value(char_type val) : char_value(val) {} + FMT_CONSTEXPR FMT_INLINE value(const char_type* val) { + string.data = val; + if (is_constant_evaluated()) string.size = {}; + } + FMT_CONSTEXPR FMT_INLINE value(basic_string_view val) { string.data = val.data(); string.size = val.size(); } @@ -1088,31 +1252,39 @@ template class value { FMT_INLINE value(const named_arg_info* args, size_t size) : named_args{args, size} {} - template FMT_INLINE value(const T& val) { - custom.value = &val; + template FMT_CONSTEXPR FMT_INLINE value(T& val) { + using value_type = remove_cvref_t; + custom.value = const_cast(&val); // Get the formatter type through the context to allow different contexts // have different extension points, e.g. `formatter` for `format` and // `printf_formatter` for `printf`. custom.format = format_custom_arg< - T, conditional_t::value, - typename Context::template formatter_type, - fallback_formatter>>; + value_type, + conditional_t::value, + typename Context::template formatter_type, + fallback_formatter>>; } + value(unformattable); + value(unformattable_char); + value(unformattable_const); + value(unformattable_pointer); private: // Formats an argument of a custom type, such as a user-defined class. template - static void format_custom_arg(const void* arg, + static void format_custom_arg(void* arg, typename Context::parse_context_type& parse_ctx, Context& ctx) { - Formatter f; + auto f = Formatter(); parse_ctx.advance_to(f.parse(parse_ctx)); - ctx.advance_to(f.format(*static_cast(arg), ctx)); + using qualified_type = + conditional_t(), const T, T>; + ctx.advance_to(f.format(*static_cast(arg), ctx)); } }; template -FMT_CONSTEXPR basic_format_arg make_arg(const T& value); +FMT_CONSTEXPR auto make_arg(const T& value) -> basic_format_arg; // To minimize the number of types we need to deal with, long is translated // either to int or to long long depending on its size. @@ -1120,52 +1292,84 @@ enum { long_short = sizeof(long) == sizeof(int) }; using long_type = conditional_t; using ulong_type = conditional_t; -struct unformattable {}; - // Maps formatting arguments to core types. +// arg_mapper reports errors by returning unformattable instead of using +// static_assert because it's used in the is_formattable trait. template struct arg_mapper { using char_type = typename Context::char_type; - FMT_CONSTEXPR int map(signed char val) { return val; } - FMT_CONSTEXPR unsigned map(unsigned char val) { return val; } - FMT_CONSTEXPR int map(short val) { return val; } - FMT_CONSTEXPR unsigned map(unsigned short val) { return val; } - FMT_CONSTEXPR int map(int val) { return val; } - FMT_CONSTEXPR unsigned map(unsigned val) { return val; } - FMT_CONSTEXPR long_type map(long val) { return val; } - FMT_CONSTEXPR ulong_type map(unsigned long val) { return val; } - FMT_CONSTEXPR long long map(long long val) { return val; } - FMT_CONSTEXPR unsigned long long map(unsigned long long val) { return val; } - FMT_CONSTEXPR int128_t map(int128_t val) { return val; } - FMT_CONSTEXPR uint128_t map(uint128_t val) { return val; } - FMT_CONSTEXPR bool map(bool val) { return val; } + FMT_CONSTEXPR FMT_INLINE auto map(signed char val) -> int { return val; } + FMT_CONSTEXPR FMT_INLINE auto map(unsigned char val) -> unsigned { + return val; + } + FMT_CONSTEXPR FMT_INLINE auto map(short val) -> int { return val; } + FMT_CONSTEXPR FMT_INLINE auto map(unsigned short val) -> unsigned { + return val; + } + FMT_CONSTEXPR FMT_INLINE auto map(int val) -> int { return val; } + FMT_CONSTEXPR FMT_INLINE auto map(unsigned val) -> unsigned { return val; } + FMT_CONSTEXPR FMT_INLINE auto map(long val) -> long_type { return val; } + FMT_CONSTEXPR FMT_INLINE auto map(unsigned long val) -> ulong_type { + return val; + } + FMT_CONSTEXPR FMT_INLINE auto map(long long val) -> long long { return val; } + FMT_CONSTEXPR FMT_INLINE auto map(unsigned long long val) + -> unsigned long long { + return val; + } + FMT_CONSTEXPR FMT_INLINE auto map(int128_t val) -> int128_t { return val; } + FMT_CONSTEXPR FMT_INLINE auto map(uint128_t val) -> uint128_t { return val; } + FMT_CONSTEXPR FMT_INLINE auto map(bool val) -> bool { return val; } - template ::value)> - FMT_CONSTEXPR char_type map(T val) { - static_assert( - std::is_same::value || std::is_same::value, - "mixing character types is disallowed"); + template ::value || + std::is_same::value)> + FMT_CONSTEXPR FMT_INLINE auto map(T val) -> char_type { + return val; + } + template ::value || +#ifdef __cpp_char8_t + std::is_same::value || +#endif + std::is_same::value || + std::is_same::value) && + !std::is_same::value, + int> = 0> + FMT_CONSTEXPR FMT_INLINE auto map(T) -> unformattable_char { + return {}; + } + + FMT_CONSTEXPR FMT_INLINE auto map(float val) -> float { return val; } + FMT_CONSTEXPR FMT_INLINE auto map(double val) -> double { return val; } + FMT_CONSTEXPR FMT_INLINE auto map(long double val) -> long double { return val; } - FMT_CONSTEXPR float map(float val) { return val; } - FMT_CONSTEXPR double map(double val) { return val; } - FMT_CONSTEXPR long double map(long double val) { return val; } - - FMT_CONSTEXPR const char_type* map(char_type* val) { return val; } - FMT_CONSTEXPR const char_type* map(const char_type* val) { return val; } - template ::value)> - FMT_CONSTEXPR basic_string_view map(const T& val) { - static_assert(std::is_same>::value, - "mixing character types is disallowed"); + FMT_CONSTEXPR FMT_INLINE auto map(char_type* val) -> const char_type* { + return val; + } + FMT_CONSTEXPR FMT_INLINE auto map(const char_type* val) -> const char_type* { + return val; + } + template ::value && !std::is_pointer::value && + std::is_same>::value)> + FMT_CONSTEXPR FMT_INLINE auto map(const T& val) + -> basic_string_view { return to_string_view(val); } + template ::value && !std::is_pointer::value && + !std::is_same>::value)> + FMT_CONSTEXPR FMT_INLINE auto map(const T&) -> unformattable_char { + return {}; + } template , T>::value && !is_string::value && !has_formatter::value && - !has_fallback_formatter::value)> - FMT_CONSTEXPR basic_string_view map(const T& val) { + !has_fallback_formatter::value)> + FMT_CONSTEXPR FMT_INLINE auto map(const T& val) + -> basic_string_view { return basic_string_view(val); } template < @@ -1174,63 +1378,113 @@ template struct arg_mapper { std::is_constructible, T>::value && !std::is_constructible, T>::value && !is_string::value && !has_formatter::value && - !has_fallback_formatter::value)> - FMT_CONSTEXPR basic_string_view map(const T& val) { + !has_fallback_formatter::value)> + FMT_CONSTEXPR FMT_INLINE auto map(const T& val) + -> basic_string_view { return std_string_view(val); } - FMT_CONSTEXPR const char* map(const signed char* val) { - static_assert(std::is_same::value, "invalid string type"); - return reinterpret_cast(val); + + using cstring_result = conditional_t::value, + const char*, unformattable_pointer>; + + FMT_DEPRECATED FMT_CONSTEXPR FMT_INLINE auto map(const signed char* val) + -> cstring_result { + return map(reinterpret_cast(val)); } - FMT_CONSTEXPR const char* map(const unsigned char* val) { - static_assert(std::is_same::value, "invalid string type"); - return reinterpret_cast(val); + FMT_DEPRECATED FMT_CONSTEXPR FMT_INLINE auto map(const unsigned char* val) + -> cstring_result { + return map(reinterpret_cast(val)); } - FMT_CONSTEXPR const char* map(signed char* val) { - const auto* const_val = val; - return map(const_val); + FMT_DEPRECATED FMT_CONSTEXPR FMT_INLINE auto map(signed char* val) + -> cstring_result { + return map(reinterpret_cast(val)); } - FMT_CONSTEXPR const char* map(unsigned char* val) { - const auto* const_val = val; - return map(const_val); + FMT_DEPRECATED FMT_CONSTEXPR FMT_INLINE auto map(unsigned char* val) + -> cstring_result { + return map(reinterpret_cast(val)); } - FMT_CONSTEXPR const void* map(void* val) { return val; } - FMT_CONSTEXPR const void* map(const void* val) { return val; } - FMT_CONSTEXPR const void* map(std::nullptr_t val) { return val; } - template FMT_CONSTEXPR int map(const T*) { - // Formatting of arbitrary pointers is disallowed. If you want to output - // a pointer cast it to "void *" or "const void *". In particular, this - // forbids formatting of "[const] volatile char *" which is printed as bool - // by iostreams. - static_assert(!sizeof(T), "formatting of non-void pointers is disallowed"); - return 0; + FMT_CONSTEXPR FMT_INLINE auto map(void* val) -> const void* { return val; } + FMT_CONSTEXPR FMT_INLINE auto map(const void* val) -> const void* { + return val; + } + FMT_CONSTEXPR FMT_INLINE auto map(std::nullptr_t val) -> const void* { + return val; + } + + // We use SFINAE instead of a const T* parameter to avoid conflicting with + // the C array overload. + template < + typename T, + FMT_ENABLE_IF( + std::is_member_pointer::value || + std::is_function::type>::value || + (std::is_convertible::value && + !std::is_convertible::value))> + FMT_CONSTEXPR auto map(const T&) -> unformattable_pointer { + return {}; + } + + template ::value)> + FMT_CONSTEXPR FMT_INLINE auto map(const T (&values)[N]) -> const T (&)[N] { + return values; } template ::value && - !has_formatter::value && - !has_fallback_formatter::value)> - FMT_CONSTEXPR auto map(const T& val) + FMT_ENABLE_IF( + std::is_enum::value&& std::is_convertible::value && + !has_formatter::value && + !has_fallback_formatter::value)> + FMT_CONSTEXPR FMT_INLINE auto map(const T& val) -> decltype(std::declval().map( static_cast::type>(val))) { return map(static_cast::type>(val)); } - template ::value && !is_char::value && - (has_formatter::value || - has_fallback_formatter::value))> - FMT_CONSTEXPR const T& map(const T& val) { + + FMT_CONSTEXPR FMT_INLINE auto map(detail::byte val) -> unsigned { + return map(static_cast(val)); + } + + template > + struct formattable + : bool_constant() || + !std::is_const>::value || + has_fallback_formatter::value> {}; + +#if FMT_MSC_VER != 0 && FMT_MSC_VER < 1910 + // Workaround a bug in MSVC. + template FMT_CONSTEXPR FMT_INLINE auto do_map(T&& val) -> T& { return val; } +#else + template ::value)> + FMT_CONSTEXPR FMT_INLINE auto do_map(T&& val) -> T& { + return val; + } + template ::value)> + FMT_CONSTEXPR FMT_INLINE auto do_map(T&&) -> unformattable_const { + return {}; + } +#endif - template - FMT_CONSTEXPR auto map(const named_arg& val) - -> decltype(std::declval().map(val.value)) { - return map(val.value); + template , + FMT_ENABLE_IF(!is_string::value && !is_char::value && + !std::is_array::value && + (has_formatter::value || + has_fallback_formatter::value))> + FMT_CONSTEXPR FMT_INLINE auto map(T&& val) + -> decltype(this->do_map(std::forward(val))) { + return do_map(std::forward(val)); } - unformattable map(...) { return {}; } + template ::value)> + FMT_CONSTEXPR FMT_INLINE auto map(const T& named_arg) + -> decltype(std::declval().map(named_arg.value)) { + return map(named_arg.value); + } + + auto map(...) -> unformattable { return {}; } }; // A type constant after applying arg_mapper. @@ -1244,7 +1498,28 @@ enum { packed_arg_bits = 4 }; enum { max_packed_args = 62 / packed_arg_bits }; enum : unsigned long long { is_unpacked_bit = 1ULL << 63 }; enum : unsigned long long { has_named_args_bit = 1ULL << 62 }; -} // namespace detail + +FMT_END_DETAIL_NAMESPACE + +// An output iterator that appends to a buffer. +// It is used to reduce symbol sizes for the common case. +class appender : public std::back_insert_iterator> { + using base = std::back_insert_iterator>; + + template + friend auto get_buffer(appender out) -> detail::buffer& { + return detail::get_container(out); + } + + public: + using std::back_insert_iterator>::back_insert_iterator; + appender(base it) FMT_NOEXCEPT : base(it) {} + using _Unchecked_type = appender; // Mark iterator as checked. + + auto operator++() FMT_NOEXCEPT -> appender& { return *this; } + + auto operator++(int) FMT_NOEXCEPT -> appender { return *this; } +}; // A formatting argument. It is a trivially copyable/constructible type to // allow storage in basic_memory_buffer. @@ -1254,8 +1529,8 @@ template class basic_format_arg { detail::type type_; template - friend FMT_CONSTEXPR basic_format_arg detail::make_arg( - const T& value); + friend FMT_CONSTEXPR auto detail::make_arg(const T& value) + -> basic_format_arg; template friend FMT_CONSTEXPR auto visit_format_arg(Visitor&& vis, @@ -1293,10 +1568,12 @@ template class basic_format_arg { return type_ != detail::type::none_type; } - detail::type type() const { return type_; } + auto type() const -> detail::type { return type_; } - bool is_integral() const { return detail::is_integral_type(type_); } - bool is_arithmetic() const { return detail::is_arithmetic_type(type_); } + auto is_integral() const -> bool { return detail::is_integral_type(type_); } + auto is_arithmetic() const -> bool { + return detail::is_arithmetic_type(type_); + } }; /** @@ -1307,9 +1584,8 @@ template class basic_format_arg { \endrst */ template -FMT_CONSTEXPR_DECL FMT_INLINE auto visit_format_arg( +FMT_CONSTEXPR FMT_INLINE auto visit_format_arg( Visitor&& vis, const basic_format_arg& arg) -> decltype(vis(0)) { - using char_type = typename Context::char_type; switch (arg.type_) { case detail::type::none_type: break; @@ -1321,16 +1597,10 @@ FMT_CONSTEXPR_DECL FMT_INLINE auto visit_format_arg( return vis(arg.value_.long_long_value); case detail::type::ulong_long_type: return vis(arg.value_.ulong_long_value); -#if FMT_USE_INT128 case detail::type::int128_type: - return vis(arg.value_.int128_value); + return vis(detail::convert_for_visit(arg.value_.int128_value)); case detail::type::uint128_type: - return vis(arg.value_.uint128_value); -#else - case detail::type::int128_type: - case detail::type::uint128_type: - break; -#endif + return vis(detail::convert_for_visit(arg.value_.uint128_value)); case detail::type::bool_type: return vis(arg.value_.bool_value); case detail::type::char_type: @@ -1344,8 +1614,8 @@ FMT_CONSTEXPR_DECL FMT_INLINE auto visit_format_arg( case detail::type::cstring_type: return vis(arg.value_.string.data); case detail::type::string_type: - return vis(basic_string_view(arg.value_.string.data, - arg.value_.string.size)); + using sv = basic_string_view; + return vis(sv(arg.value_.string.data, arg.value_.string.size)); case detail::type::pointer_type: return vis(arg.value_.pointer); case detail::type::custom_type: @@ -1354,14 +1624,22 @@ FMT_CONSTEXPR_DECL FMT_INLINE auto visit_format_arg( return vis(monostate()); } -template struct formattable : std::false_type {}; +FMT_BEGIN_DETAIL_NAMESPACE -namespace detail { +template +auto copy_str(InputIt begin, InputIt end, appender out) -> appender { + get_container(out).append(begin, end); + return out; +} +#if FMT_GCC_VERSION && FMT_GCC_VERSION < 500 // A workaround for gcc 4.8 to make void_t work in a SFINAE context. template struct void_t_impl { using type = void; }; template using void_t = typename detail::void_t_impl::type; +#else +template using void_t = void; +#endif template struct is_output_iterator : std::false_type {}; @@ -1384,9 +1662,8 @@ struct is_contiguous_back_insert_iterator : std::false_type {}; template struct is_contiguous_back_insert_iterator> : is_contiguous {}; -template -struct is_contiguous_back_insert_iterator> - : std::true_type {}; +template <> +struct is_contiguous_back_insert_iterator : std::true_type {}; // A type-erased reference to an std::locale to avoid heavy include. class locale_ref { @@ -1394,97 +1671,72 @@ class locale_ref { const void* locale_; // A type-erased pointer to std::locale. public: - locale_ref() : locale_(nullptr) {} + constexpr locale_ref() : locale_(nullptr) {} template explicit locale_ref(const Locale& loc); explicit operator bool() const FMT_NOEXCEPT { return locale_ != nullptr; } - template Locale get() const; + template auto get() const -> Locale; }; -template constexpr unsigned long long encode_types() { return 0; } +template constexpr auto encode_types() -> unsigned long long { + return 0; +} template -constexpr unsigned long long encode_types() { +constexpr auto encode_types() -> unsigned long long { return static_cast(mapped_type_constant::value) | (encode_types() << packed_arg_bits); } template -FMT_CONSTEXPR basic_format_arg make_arg(const T& value) { +FMT_CONSTEXPR auto make_arg(const T& value) -> basic_format_arg { basic_format_arg arg; arg.type_ = mapped_type_constant::value; arg.value_ = arg_mapper().map(value); return arg; } -template int check(unformattable) { - static_assert( - formattable(), - "Cannot format an argument. To make type T formattable provide a " - "formatter specialization: https://fmt.dev/latest/api.html#udt"); - return 0; -} -template inline const U& check(const U& val) { - return val; -} - // The type template parameter is there to avoid an ODR violation when using // a fallback formatter in one translation unit and an implicit conversion in // another (not recommended). template -inline value make_arg(const T& val) { - return check(arg_mapper().map(val)); +FMT_CONSTEXPR FMT_INLINE auto make_arg(T&& val) -> value { + const auto& arg = arg_mapper().map(std::forward(val)); + + constexpr bool formattable_char = + !std::is_same::value; + static_assert(formattable_char, "Mixing character types is disallowed."); + + constexpr bool formattable_const = + !std::is_same::value; + static_assert(formattable_const, "Cannot format a const argument."); + + // Formatting of arbitrary pointers is disallowed. If you want to output + // a pointer cast it to "void *" or "const void *". In particular, this + // forbids formatting of "[const] volatile char *" which is printed as bool + // by iostreams. + constexpr bool formattable_pointer = + !std::is_same::value; + static_assert(formattable_pointer, + "Formatting of non-void pointers is disallowed."); + + constexpr bool formattable = + !std::is_same::value; + static_assert( + formattable, + "Cannot format an argument. To make type T formattable provide a " + "formatter specialization: https://fmt.dev/latest/api.html#udt"); + return {arg}; } template -inline basic_format_arg make_arg(const T& value) { +inline auto make_arg(const T& value) -> basic_format_arg { return make_arg(value); } - -template struct is_reference_wrapper : std::false_type {}; -template -struct is_reference_wrapper> : std::true_type {}; - -template const T& unwrap(const T& v) { return v; } -template const T& unwrap(const std::reference_wrapper& v) { - return static_cast(v); -} - -class dynamic_arg_list { - // Workaround for clang's -Wweak-vtables. Unlike for regular classes, for - // templates it doesn't complain about inability to deduce single translation - // unit for placing vtable. So storage_node_base is made a fake template. - template struct node { - virtual ~node() = default; - std::unique_ptr> next; - }; - - template struct typed_node : node<> { - T value; - - template - FMT_CONSTEXPR typed_node(const Arg& arg) : value(arg) {} - - template - FMT_CONSTEXPR typed_node(const basic_string_view& arg) - : value(arg.data(), arg.size()) {} - }; - - std::unique_ptr> head_; - - public: - template const T& push(const Arg& arg) { - auto new_node = std::unique_ptr>(new typed_node(arg)); - auto& value = new_node->value; - new_node->next = std::move(head_); - head_ = std::move(new_node); - return value; - } -}; -} // namespace detail +FMT_END_DETAIL_NAMESPACE // Formatting context. template class basic_format_context { @@ -1503,46 +1755,59 @@ template class basic_format_context { using parse_context_type = basic_format_parse_context; template using formatter_type = formatter; + basic_format_context(basic_format_context&&) = default; basic_format_context(const basic_format_context&) = delete; void operator=(const basic_format_context&) = delete; /** Constructs a ``basic_format_context`` object. References to the arguments are stored in the object so make sure they have appropriate lifetimes. */ - basic_format_context(OutputIt out, - basic_format_args ctx_args, - detail::locale_ref loc = detail::locale_ref()) + constexpr basic_format_context( + OutputIt out, basic_format_args ctx_args, + detail::locale_ref loc = detail::locale_ref()) : out_(out), args_(ctx_args), loc_(loc) {} - format_arg arg(int id) const { return args_.get(id); } - format_arg arg(basic_string_view name) { return args_.get(name); } - int arg_id(basic_string_view name) { return args_.get_id(name); } - const basic_format_args& args() const { return args_; } + constexpr auto arg(int id) const -> format_arg { return args_.get(id); } + FMT_CONSTEXPR auto arg(basic_string_view name) -> format_arg { + return args_.get(name); + } + FMT_CONSTEXPR auto arg_id(basic_string_view name) -> int { + return args_.get_id(name); + } + auto args() const -> const basic_format_args& { + return args_; + } - detail::error_handler error_handler() { return {}; } + FMT_CONSTEXPR auto error_handler() -> detail::error_handler { return {}; } void on_error(const char* message) { error_handler().on_error(message); } // Returns an iterator to the beginning of the output range. - iterator out() { return out_; } + FMT_CONSTEXPR auto out() -> iterator { return out_; } // Advances the begin iterator to ``it``. void advance_to(iterator it) { if (!detail::is_back_insert_iterator()) out_ = it; } - detail::locale_ref locale() { return loc_; } + FMT_CONSTEXPR auto locale() -> detail::locale_ref { return loc_; } }; template using buffer_context = basic_format_context, Char>; using format_context = buffer_context; -using wformat_context = buffer_context; // Workaround an alias issue: https://stackoverflow.com/q/62767544/471164. #define FMT_BUFFER_CONTEXT(Char) \ basic_format_context, Char> +template +using is_formattable = bool_constant< + !std::is_base_of>().map( + std::declval()))>::value && + !detail::has_fallback_formatter::value>; + /** \rst An array of references to arguments. It can be implicitly converted into @@ -1579,14 +1844,16 @@ class format_arg_store : 0); public: - format_arg_store(const Args&... args) + template + FMT_CONSTEXPR FMT_INLINE format_arg_store(T&&... args) : #if FMT_GCC_VERSION && FMT_GCC_VERSION < 409 basic_format_args(*this), #endif data_{detail::make_arg< is_packed, Context, - detail::mapped_type_constant::value>(args)...} { + detail::mapped_type_constant, Context>::value>( + std::forward(args))...} { detail::init_named_args(data_.named_args(), 0, 0, args...); } }; @@ -1600,36 +1867,16 @@ class format_arg_store \endrst */ template -inline format_arg_store make_format_args( - const Args&... args) { - return {args...}; +constexpr auto make_format_args(Args&&... args) + -> format_arg_store...> { + return {std::forward(args)...}; } /** \rst - Constructs a `~fmt::format_arg_store` object that contains references - to arguments and can be implicitly converted to `~fmt::format_args`. - If ``format_str`` is a compile-time string then `make_args_checked` checks - its validity at compile time. - \endrst - */ -template > -inline auto make_args_checked(const S& format_str, - const remove_reference_t&... args) - -> format_arg_store, remove_reference_t...> { - static_assert( - detail::count<( - std::is_base_of>::value && - std::is_reference::value)...>() == 0, - "passing views as lvalues is disallowed"); - detail::check_format_string(format_str); - return {args...}; -} - -/** - \rst - Returns a named argument to be used in a formatting function. It should only - be used in a call to a formatting function. + Returns a named argument to be used in a formatting function. + It should only be used in a call to a formatting function or + `dynamic_format_arg_store::push_back`. **Example**:: @@ -1637,184 +1884,11 @@ inline auto make_args_checked(const S& format_str, \endrst */ template -inline detail::named_arg arg(const Char* name, const T& arg) { +inline auto arg(const Char* name, const T& arg) -> detail::named_arg { static_assert(!detail::is_named_arg(), "nested named arguments"); return {name, arg}; } -/** - \rst - A dynamic version of `fmt::format_arg_store`. - It's equipped with a storage to potentially temporary objects which lifetimes - could be shorter than the format arguments object. - - It can be implicitly converted into `~fmt::basic_format_args` for passing - into type-erased formatting functions such as `~fmt::vformat`. - \endrst - */ -template -class dynamic_format_arg_store -#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409 - // Workaround a GCC template argument substitution bug. - : public basic_format_args -#endif -{ - private: - using char_type = typename Context::char_type; - - template struct need_copy { - static constexpr detail::type mapped_type = - detail::mapped_type_constant::value; - - enum { - value = !(detail::is_reference_wrapper::value || - std::is_same>::value || - std::is_same>::value || - (mapped_type != detail::type::cstring_type && - mapped_type != detail::type::string_type && - mapped_type != detail::type::custom_type)) - }; - }; - - template - using stored_type = conditional_t::value, - std::basic_string, T>; - - // Storage of basic_format_arg must be contiguous. - std::vector> data_; - std::vector> named_info_; - - // Storage of arguments not fitting into basic_format_arg must grow - // without relocation because items in data_ refer to it. - detail::dynamic_arg_list dynamic_args_; - - friend class basic_format_args; - - unsigned long long get_types() const { - return detail::is_unpacked_bit | data_.size() | - (named_info_.empty() - ? 0ULL - : static_cast(detail::has_named_args_bit)); - } - - const basic_format_arg* data() const { - return named_info_.empty() ? data_.data() : data_.data() + 1; - } - - template void emplace_arg(const T& arg) { - data_.emplace_back(detail::make_arg(arg)); - } - - template - void emplace_arg(const detail::named_arg& arg) { - if (named_info_.empty()) { - constexpr const detail::named_arg_info* zero_ptr{nullptr}; - data_.insert(data_.begin(), {zero_ptr, 0}); - } - data_.emplace_back(detail::make_arg(detail::unwrap(arg.value))); - auto pop_one = [](std::vector>* data) { - data->pop_back(); - }; - std::unique_ptr>, decltype(pop_one)> - guard{&data_, pop_one}; - named_info_.push_back({arg.name, static_cast(data_.size() - 2u)}); - data_[0].value_.named_args = {named_info_.data(), named_info_.size()}; - guard.release(); - } - - public: - /** - \rst - Adds an argument into the dynamic store for later passing to a formatting - function. - - Note that custom types and string types (but not string views) are copied - into the store dynamically allocating memory if necessary. - - **Example**:: - - fmt::dynamic_format_arg_store store; - store.push_back(42); - store.push_back("abc"); - store.push_back(1.5f); - std::string result = fmt::vformat("{} and {} and {}", store); - \endrst - */ - template void push_back(const T& arg) { - if (detail::const_check(need_copy::value)) - emplace_arg(dynamic_args_.push>(arg)); - else - emplace_arg(detail::unwrap(arg)); - } - - /** - \rst - Adds a reference to the argument into the dynamic store for later passing to - a formatting function. Supports named arguments wrapped in - ``std::reference_wrapper`` via ``std::ref()``/``std::cref()``. - - **Example**:: - - fmt::dynamic_format_arg_store store; - char str[] = "1234567890"; - store.push_back(std::cref(str)); - int a1_val{42}; - auto a1 = fmt::arg("a1_", a1_val); - store.push_back(std::cref(a1)); - - // Changing str affects the output but only for string and custom types. - str[0] = 'X'; - - std::string result = fmt::vformat("{} and {a1_}"); - assert(result == "X234567890 and 42"); - \endrst - */ - template void push_back(std::reference_wrapper arg) { - static_assert( - detail::is_named_arg::type>::value || - need_copy::value, - "objects of built-in types and string views are always copied"); - emplace_arg(arg.get()); - } - - /** - Adds named argument into the dynamic store for later passing to a formatting - function. ``std::reference_wrapper`` is supported to avoid copying of the - argument. - */ - template - void push_back(const detail::named_arg& arg) { - const char_type* arg_name = - dynamic_args_.push>(arg.name).c_str(); - if (detail::const_check(need_copy::value)) { - emplace_arg( - fmt::arg(arg_name, dynamic_args_.push>(arg.value))); - } else { - emplace_arg(fmt::arg(arg_name, arg.value)); - } - } - - /** Erase all elements from the store */ - void clear() { - data_.clear(); - named_info_.clear(); - dynamic_args_ = detail::dynamic_arg_list(); - } - - /** - \rst - Reserves space to store at least *new_cap* arguments including - *new_cap_named* named arguments. - \endrst - */ - void reserve(size_t new_cap, size_t new_cap_named) { - FMT_ASSERT(new_cap >= new_cap_named, - "Set of arguments includes set of named arguments"); - data_.reserve(new_cap); - named_info_.reserve(new_cap_named); - } -}; - /** \rst A view of a collection of formatting arguments. To avoid lifetime issues it @@ -1846,25 +1920,27 @@ template class basic_format_args { const format_arg* args_; }; - bool is_packed() const { return (desc_ & detail::is_unpacked_bit) == 0; } - bool has_named_args() const { + constexpr auto is_packed() const -> bool { + return (desc_ & detail::is_unpacked_bit) == 0; + } + auto has_named_args() const -> bool { return (desc_ & detail::has_named_args_bit) != 0; } - detail::type type(int index) const { + FMT_CONSTEXPR auto type(int index) const -> detail::type { int shift = index * detail::packed_arg_bits; unsigned int mask = (1 << detail::packed_arg_bits) - 1; return static_cast((desc_ >> shift) & mask); } - basic_format_args(unsigned long long desc, - const detail::value* values) + constexpr FMT_INLINE basic_format_args(unsigned long long desc, + const detail::value* values) : desc_(desc), values_(values) {} - basic_format_args(unsigned long long desc, const format_arg* args) + constexpr basic_format_args(unsigned long long desc, const format_arg* args) : desc_(desc), args_(args) {} public: - basic_format_args() : desc_(0) {} + constexpr basic_format_args() : desc_(0), args_(nullptr) {} /** \rst @@ -1872,8 +1948,10 @@ template class basic_format_args { \endrst */ template - FMT_INLINE basic_format_args(const format_arg_store& store) - : basic_format_args(store.desc, store.data_.args()) {} + constexpr FMT_INLINE basic_format_args( + const format_arg_store& store) + : basic_format_args(format_arg_store::desc, + store.data_.args()) {} /** \rst @@ -1881,7 +1959,8 @@ template class basic_format_args { `~fmt::dynamic_format_arg_store`. \endrst */ - FMT_INLINE basic_format_args(const dynamic_format_arg_store& store) + constexpr FMT_INLINE basic_format_args( + const dynamic_format_arg_store& store) : basic_format_args(store.get_types(), store.data()) {} /** @@ -1889,12 +1968,12 @@ template class basic_format_args { Constructs a `basic_format_args` object from a dynamic set of arguments. \endrst */ - basic_format_args(const format_arg* args, int count) + constexpr basic_format_args(const format_arg* args, int count) : basic_format_args(detail::is_unpacked_bit | detail::to_unsigned(count), args) {} /** Returns the argument with the specified id. */ - format_arg get(int id) const { + FMT_CONSTEXPR auto get(int id) const -> format_arg { format_arg arg; if (!is_packed()) { if (id < max_size()) arg = args_[id]; @@ -1907,12 +1986,14 @@ template class basic_format_args { return arg; } - template format_arg get(basic_string_view name) const { + template + auto get(basic_string_view name) const -> format_arg { int id = get_id(name); return id >= 0 ? get(id) : format_arg(); } - template int get_id(basic_string_view name) const { + template + auto get_id(basic_string_view name) const -> int { if (!has_named_args()) return -1; const auto& named_args = (is_packed() ? values_[-1] : args_[-1].value_).named_args; @@ -1922,79 +2003,1149 @@ template class basic_format_args { return -1; } - int max_size() const { + auto max_size() const -> int { unsigned long long max_packed = detail::max_packed_args; return static_cast(is_packed() ? max_packed : desc_ & ~detail::is_unpacked_bit); } }; -/** An alias to ``basic_format_args``. */ -// It is a separate type rather than an alias to make symbols readable. -struct format_args : basic_format_args { - template - FMT_INLINE format_args(const Args&... args) : basic_format_args(args...) {} +/** An alias to ``basic_format_args``. */ +// A separate type would result in shorter symbols but break ABI compatibility +// between clang and gcc on ARM (#1919). +using format_args = basic_format_args; + +// We cannot use enum classes as bit fields because of a gcc bug +// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61414. +namespace align { +enum type { none, left, right, center, numeric }; +} +using align_t = align::type; +namespace sign { +enum type { none, minus, plus, space }; +} +using sign_t = sign::type; + +FMT_BEGIN_DETAIL_NAMESPACE + +// Workaround an array initialization issue in gcc 4.8. +template struct fill_t { + private: + enum { max_size = 4 }; + Char data_[max_size] = {Char(' '), Char(0), Char(0), Char(0)}; + unsigned char size_ = 1; + + public: + FMT_CONSTEXPR void operator=(basic_string_view s) { + auto size = s.size(); + if (size > max_size) return throw_format_error("invalid fill"); + for (size_t i = 0; i < size; ++i) data_[i] = s[i]; + size_ = static_cast(size); + } + + constexpr auto size() const -> size_t { return size_; } + constexpr auto data() const -> const Char* { return data_; } + + FMT_CONSTEXPR auto operator[](size_t index) -> Char& { return data_[index]; } + FMT_CONSTEXPR auto operator[](size_t index) const -> const Char& { + return data_[index]; + } }; -struct wformat_args : basic_format_args { - using basic_format_args::basic_format_args; +FMT_END_DETAIL_NAMESPACE + +enum class presentation_type : unsigned char { + none, + // Integer types should go first, + dec, // 'd' + oct, // 'o' + hex_lower, // 'x' + hex_upper, // 'X' + bin_lower, // 'b' + bin_upper, // 'B' + hexfloat_lower, // 'a' + hexfloat_upper, // 'A' + exp_lower, // 'e' + exp_upper, // 'E' + fixed_lower, // 'f' + fixed_upper, // 'F' + general_lower, // 'g' + general_upper, // 'G' + chr, // 'c' + string, // 's' + pointer // 'p' }; -namespace detail { +// Format specifiers for built-in and string types. +template struct basic_format_specs { + int width; + int precision; + presentation_type type; + align_t align : 4; + sign_t sign : 3; + bool alt : 1; // Alternate form ('#'). + bool localized : 1; + detail::fill_t fill; -template ::value)> -std::basic_string vformat( - basic_string_view format_str, - basic_format_args>> args); + constexpr basic_format_specs() + : width(0), + precision(-1), + type(presentation_type::none), + align(align::none), + sign(sign::none), + alt(false), + localized(false) {} +}; -FMT_API std::string vformat(string_view format_str, format_args args); +using format_specs = basic_format_specs; + +FMT_BEGIN_DETAIL_NAMESPACE + +enum class arg_id_kind { none, index, name }; + +// An argument reference. +template struct arg_ref { + FMT_CONSTEXPR arg_ref() : kind(arg_id_kind::none), val() {} + + FMT_CONSTEXPR explicit arg_ref(int index) + : kind(arg_id_kind::index), val(index) {} + FMT_CONSTEXPR explicit arg_ref(basic_string_view name) + : kind(arg_id_kind::name), val(name) {} + + FMT_CONSTEXPR auto operator=(int idx) -> arg_ref& { + kind = arg_id_kind::index; + val.index = idx; + return *this; + } + + arg_id_kind kind; + union value { + FMT_CONSTEXPR value(int id = 0) : index{id} {} + FMT_CONSTEXPR value(basic_string_view n) : name(n) {} + + int index; + basic_string_view name; + } val; +}; + +// Format specifiers with width and precision resolved at formatting rather +// than parsing time to allow re-using the same parsed specifiers with +// different sets of arguments (precompilation of format strings). +template +struct dynamic_format_specs : basic_format_specs { + arg_ref width_ref; + arg_ref precision_ref; +}; + +struct auto_id {}; + +// A format specifier handler that sets fields in basic_format_specs. +template class specs_setter { + protected: + basic_format_specs& specs_; + + public: + explicit FMT_CONSTEXPR specs_setter(basic_format_specs& specs) + : specs_(specs) {} + + FMT_CONSTEXPR specs_setter(const specs_setter& other) + : specs_(other.specs_) {} + + FMT_CONSTEXPR void on_align(align_t align) { specs_.align = align; } + FMT_CONSTEXPR void on_fill(basic_string_view fill) { + specs_.fill = fill; + } + FMT_CONSTEXPR void on_sign(sign_t s) { specs_.sign = s; } + FMT_CONSTEXPR void on_hash() { specs_.alt = true; } + FMT_CONSTEXPR void on_localized() { specs_.localized = true; } + + FMT_CONSTEXPR void on_zero() { + if (specs_.align == align::none) specs_.align = align::numeric; + specs_.fill[0] = Char('0'); + } + + FMT_CONSTEXPR void on_width(int width) { specs_.width = width; } + FMT_CONSTEXPR void on_precision(int precision) { + specs_.precision = precision; + } + FMT_CONSTEXPR void end_precision() {} + + FMT_CONSTEXPR void on_type(presentation_type type) { specs_.type = type; } +}; + +// Format spec handler that saves references to arguments representing dynamic +// width and precision to be resolved at formatting time. +template +class dynamic_specs_handler + : public specs_setter { + public: + using char_type = typename ParseContext::char_type; + + FMT_CONSTEXPR dynamic_specs_handler(dynamic_format_specs& specs, + ParseContext& ctx) + : specs_setter(specs), specs_(specs), context_(ctx) {} + + FMT_CONSTEXPR dynamic_specs_handler(const dynamic_specs_handler& other) + : specs_setter(other), + specs_(other.specs_), + context_(other.context_) {} + + template FMT_CONSTEXPR void on_dynamic_width(Id arg_id) { + specs_.width_ref = make_arg_ref(arg_id); + } + + template FMT_CONSTEXPR void on_dynamic_precision(Id arg_id) { + specs_.precision_ref = make_arg_ref(arg_id); + } + + FMT_CONSTEXPR void on_error(const char* message) { + context_.on_error(message); + } + + private: + dynamic_format_specs& specs_; + ParseContext& context_; + + using arg_ref_type = arg_ref; + + FMT_CONSTEXPR auto make_arg_ref(int arg_id) -> arg_ref_type { + context_.check_arg_id(arg_id); + return arg_ref_type(arg_id); + } + + FMT_CONSTEXPR auto make_arg_ref(auto_id) -> arg_ref_type { + return arg_ref_type(context_.next_arg_id()); + } + + FMT_CONSTEXPR auto make_arg_ref(basic_string_view arg_id) + -> arg_ref_type { + context_.check_arg_id(arg_id); + basic_string_view format_str( + context_.begin(), to_unsigned(context_.end() - context_.begin())); + return arg_ref_type(arg_id); + } +}; + +template constexpr bool is_ascii_letter(Char c) { + return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'); +} + +// Converts a character to ASCII. Returns a number > 127 on conversion failure. +template ::value)> +constexpr auto to_ascii(Char value) -> Char { + return value; +} +template ::value)> +constexpr auto to_ascii(Char value) -> + typename std::underlying_type::type { + return value; +} + +template +FMT_CONSTEXPR auto code_point_length(const Char* begin) -> int { + if (const_check(sizeof(Char) != 1)) return 1; + auto lengths = + "\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\0\0\0\0\0\0\0\0\2\2\2\2\3\3\4"; + int len = lengths[static_cast(*begin) >> 3]; + + // Compute the pointer to the next character early so that the next + // iteration can start working on the next character. Neither Clang + // nor GCC figure out this reordering on their own. + return len + !len; +} + +// Return the result via the out param to workaround gcc bug 77539. +template +FMT_CONSTEXPR auto find(Ptr first, Ptr last, T value, Ptr& out) -> bool { + for (out = first; out != last; ++out) { + if (*out == value) return true; + } + return false; +} + +template <> +inline auto find(const char* first, const char* last, char value, + const char*& out) -> bool { + out = static_cast( + std::memchr(first, value, to_unsigned(last - first))); + return out != nullptr; +} + +// Parses the range [begin, end) as an unsigned integer. This function assumes +// that the range is non-empty and the first character is a digit. +template +FMT_CONSTEXPR auto parse_nonnegative_int(const Char*& begin, const Char* end, + int error_value) noexcept -> int { + FMT_ASSERT(begin != end && '0' <= *begin && *begin <= '9', ""); + unsigned value = 0, prev = 0; + auto p = begin; + do { + prev = value; + value = value * 10 + unsigned(*p - '0'); + ++p; + } while (p != end && '0' <= *p && *p <= '9'); + auto num_digits = p - begin; + begin = p; + if (num_digits <= std::numeric_limits::digits10) + return static_cast(value); + // Check for overflow. + const unsigned max = to_unsigned((std::numeric_limits::max)()); + return num_digits == std::numeric_limits::digits10 + 1 && + prev * 10ull + unsigned(p[-1] - '0') <= max + ? static_cast(value) + : error_value; +} + +// Parses fill and alignment. +template +FMT_CONSTEXPR auto parse_align(const Char* begin, const Char* end, + Handler&& handler) -> const Char* { + FMT_ASSERT(begin != end, ""); + auto align = align::none; + auto p = begin + code_point_length(begin); + if (p >= end) p = begin; + for (;;) { + switch (to_ascii(*p)) { + case '<': + align = align::left; + break; + case '>': + align = align::right; + break; + case '^': + align = align::center; + break; + default: + break; + } + if (align != align::none) { + if (p != begin) { + auto c = *begin; + if (c == '{') + return handler.on_error("invalid fill character '{'"), begin; + handler.on_fill(basic_string_view(begin, to_unsigned(p - begin))); + begin = p + 1; + } else + ++begin; + handler.on_align(align); + break; + } else if (p == begin) { + break; + } + p = begin; + } + return begin; +} + +template FMT_CONSTEXPR bool is_name_start(Char c) { + return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || '_' == c; +} + +template +FMT_CONSTEXPR auto do_parse_arg_id(const Char* begin, const Char* end, + IDHandler&& handler) -> const Char* { + FMT_ASSERT(begin != end, ""); + Char c = *begin; + if (c >= '0' && c <= '9') { + int index = 0; + if (c != '0') + index = + parse_nonnegative_int(begin, end, (std::numeric_limits::max)()); + else + ++begin; + if (begin == end || (*begin != '}' && *begin != ':')) + handler.on_error("invalid format string"); + else + handler(index); + return begin; + } + if (!is_name_start(c)) { + handler.on_error("invalid format string"); + return begin; + } + auto it = begin; + do { + ++it; + } while (it != end && (is_name_start(c = *it) || ('0' <= c && c <= '9'))); + handler(basic_string_view(begin, to_unsigned(it - begin))); + return it; +} + +template +FMT_CONSTEXPR FMT_INLINE auto parse_arg_id(const Char* begin, const Char* end, + IDHandler&& handler) -> const Char* { + Char c = *begin; + if (c != '}' && c != ':') return do_parse_arg_id(begin, end, handler); + handler(); + return begin; +} + +template +FMT_CONSTEXPR auto parse_width(const Char* begin, const Char* end, + Handler&& handler) -> const Char* { + using detail::auto_id; + struct width_adapter { + Handler& handler; + + FMT_CONSTEXPR void operator()() { handler.on_dynamic_width(auto_id()); } + FMT_CONSTEXPR void operator()(int id) { handler.on_dynamic_width(id); } + FMT_CONSTEXPR void operator()(basic_string_view id) { + handler.on_dynamic_width(id); + } + FMT_CONSTEXPR void on_error(const char* message) { + if (message) handler.on_error(message); + } + }; + + FMT_ASSERT(begin != end, ""); + if ('0' <= *begin && *begin <= '9') { + int width = parse_nonnegative_int(begin, end, -1); + if (width != -1) + handler.on_width(width); + else + handler.on_error("number is too big"); + } else if (*begin == '{') { + ++begin; + if (begin != end) begin = parse_arg_id(begin, end, width_adapter{handler}); + if (begin == end || *begin != '}') + return handler.on_error("invalid format string"), begin; + ++begin; + } + return begin; +} + +template +FMT_CONSTEXPR auto parse_precision(const Char* begin, const Char* end, + Handler&& handler) -> const Char* { + using detail::auto_id; + struct precision_adapter { + Handler& handler; + + FMT_CONSTEXPR void operator()() { handler.on_dynamic_precision(auto_id()); } + FMT_CONSTEXPR void operator()(int id) { handler.on_dynamic_precision(id); } + FMT_CONSTEXPR void operator()(basic_string_view id) { + handler.on_dynamic_precision(id); + } + FMT_CONSTEXPR void on_error(const char* message) { + if (message) handler.on_error(message); + } + }; + + ++begin; + auto c = begin != end ? *begin : Char(); + if ('0' <= c && c <= '9') { + auto precision = parse_nonnegative_int(begin, end, -1); + if (precision != -1) + handler.on_precision(precision); + else + handler.on_error("number is too big"); + } else if (c == '{') { + ++begin; + if (begin != end) + begin = parse_arg_id(begin, end, precision_adapter{handler}); + if (begin == end || *begin++ != '}') + return handler.on_error("invalid format string"), begin; + } else { + return handler.on_error("missing precision specifier"), begin; + } + handler.end_precision(); + return begin; +} + +template +FMT_CONSTEXPR auto parse_presentation_type(Char type) -> presentation_type { + switch (to_ascii(type)) { + case 'd': + return presentation_type::dec; + case 'o': + return presentation_type::oct; + case 'x': + return presentation_type::hex_lower; + case 'X': + return presentation_type::hex_upper; + case 'b': + return presentation_type::bin_lower; + case 'B': + return presentation_type::bin_upper; + case 'a': + return presentation_type::hexfloat_lower; + case 'A': + return presentation_type::hexfloat_upper; + case 'e': + return presentation_type::exp_lower; + case 'E': + return presentation_type::exp_upper; + case 'f': + return presentation_type::fixed_lower; + case 'F': + return presentation_type::fixed_upper; + case 'g': + return presentation_type::general_lower; + case 'G': + return presentation_type::general_upper; + case 'c': + return presentation_type::chr; + case 's': + return presentation_type::string; + case 'p': + return presentation_type::pointer; + default: + return presentation_type::none; + } +} + +// Parses standard format specifiers and sends notifications about parsed +// components to handler. +template +FMT_CONSTEXPR FMT_INLINE auto parse_format_specs(const Char* begin, + const Char* end, + SpecHandler&& handler) + -> const Char* { + if (1 < end - begin && begin[1] == '}' && is_ascii_letter(*begin) && + *begin != 'L') { + presentation_type type = parse_presentation_type(*begin++); + if (type == presentation_type::none) + handler.on_error("invalid type specifier"); + handler.on_type(type); + return begin; + } + + if (begin == end) return begin; + + begin = parse_align(begin, end, handler); + if (begin == end) return begin; + + // Parse sign. + switch (to_ascii(*begin)) { + case '+': + handler.on_sign(sign::plus); + ++begin; + break; + case '-': + handler.on_sign(sign::minus); + ++begin; + break; + case ' ': + handler.on_sign(sign::space); + ++begin; + break; + default: + break; + } + if (begin == end) return begin; + + if (*begin == '#') { + handler.on_hash(); + if (++begin == end) return begin; + } + + // Parse zero flag. + if (*begin == '0') { + handler.on_zero(); + if (++begin == end) return begin; + } + + begin = parse_width(begin, end, handler); + if (begin == end) return begin; + + // Parse precision. + if (*begin == '.') { + begin = parse_precision(begin, end, handler); + if (begin == end) return begin; + } + + if (*begin == 'L') { + handler.on_localized(); + ++begin; + } + + // Parse type. + if (begin != end && *begin != '}') { + presentation_type type = parse_presentation_type(*begin++); + if (type == presentation_type::none) + handler.on_error("invalid type specifier"); + handler.on_type(type); + } + return begin; +} + +template +FMT_CONSTEXPR auto parse_replacement_field(const Char* begin, const Char* end, + Handler&& handler) -> const Char* { + struct id_adapter { + Handler& handler; + int arg_id; + + FMT_CONSTEXPR void operator()() { arg_id = handler.on_arg_id(); } + FMT_CONSTEXPR void operator()(int id) { arg_id = handler.on_arg_id(id); } + FMT_CONSTEXPR void operator()(basic_string_view id) { + arg_id = handler.on_arg_id(id); + } + FMT_CONSTEXPR void on_error(const char* message) { + if (message) handler.on_error(message); + } + }; + + ++begin; + if (begin == end) return handler.on_error("invalid format string"), end; + if (*begin == '}') { + handler.on_replacement_field(handler.on_arg_id(), begin); + } else if (*begin == '{') { + handler.on_text(begin, begin + 1); + } else { + auto adapter = id_adapter{handler, 0}; + begin = parse_arg_id(begin, end, adapter); + Char c = begin != end ? *begin : Char(); + if (c == '}') { + handler.on_replacement_field(adapter.arg_id, begin); + } else if (c == ':') { + begin = handler.on_format_specs(adapter.arg_id, begin + 1, end); + if (begin == end || *begin != '}') + return handler.on_error("unknown format specifier"), end; + } else { + return handler.on_error("missing '}' in format string"), end; + } + } + return begin + 1; +} + +template +FMT_CONSTEXPR FMT_INLINE void parse_format_string( + basic_string_view format_str, Handler&& handler) { + // Workaround a name-lookup bug in MSVC's modules implementation. + using detail::find; + + auto begin = format_str.data(); + auto end = begin + format_str.size(); + if (end - begin < 32) { + // Use a simple loop instead of memchr for small strings. + const Char* p = begin; + while (p != end) { + auto c = *p++; + if (c == '{') { + handler.on_text(begin, p - 1); + begin = p = parse_replacement_field(p - 1, end, handler); + } else if (c == '}') { + if (p == end || *p != '}') + return handler.on_error("unmatched '}' in format string"); + handler.on_text(begin, p); + begin = ++p; + } + } + handler.on_text(begin, end); + return; + } + struct writer { + FMT_CONSTEXPR void operator()(const Char* pbegin, const Char* pend) { + if (pbegin == pend) return; + for (;;) { + const Char* p = nullptr; + if (!find(pbegin, pend, Char('}'), p)) + return handler_.on_text(pbegin, pend); + ++p; + if (p == pend || *p != '}') + return handler_.on_error("unmatched '}' in format string"); + handler_.on_text(pbegin, p); + pbegin = p + 1; + } + } + Handler& handler_; + } write{handler}; + while (begin != end) { + // Doing two passes with memchr (one for '{' and another for '}') is up to + // 2.5x faster than the naive one-pass implementation on big format strings. + const Char* p = begin; + if (*begin != '{' && !find(begin + 1, end, Char('{'), p)) + return write(begin, end); + write(begin, p); + begin = parse_replacement_field(p, end, handler); + } +} + +template +FMT_CONSTEXPR auto parse_format_specs(ParseContext& ctx) + -> decltype(ctx.begin()) { + using char_type = typename ParseContext::char_type; + using context = buffer_context; + using mapped_type = conditional_t< + mapped_type_constant::value != type::custom_type, + decltype(arg_mapper().map(std::declval())), T>; + auto f = conditional_t::value, + formatter, + fallback_formatter>(); + return f.parse(ctx); +} + +// A parse context with extra argument id checks. It is only used at compile +// time because adding checks at runtime would introduce substantial overhead +// and would be redundant since argument ids are checked when arguments are +// retrieved anyway. +template +class compile_parse_context + : public basic_format_parse_context { + private: + int num_args_; + using base = basic_format_parse_context; + + public: + explicit FMT_CONSTEXPR compile_parse_context( + basic_string_view format_str, + int num_args = (std::numeric_limits::max)(), ErrorHandler eh = {}) + : base(format_str, eh), num_args_(num_args) {} + + FMT_CONSTEXPR auto next_arg_id() -> int { + int id = base::next_arg_id(); + if (id >= num_args_) this->on_error("argument not found"); + return id; + } + + FMT_CONSTEXPR void check_arg_id(int id) { + base::check_arg_id(id); + if (id >= num_args_) this->on_error("argument not found"); + } + using base::check_arg_id; +}; + +template +FMT_CONSTEXPR void check_int_type_spec(presentation_type type, + ErrorHandler&& eh) { + if (type > presentation_type::bin_upper && type != presentation_type::chr) + eh.on_error("invalid type specifier"); +} + +// Checks char specs and returns true if the type spec is char (and not int). +template +FMT_CONSTEXPR auto check_char_specs(const basic_format_specs& specs, + ErrorHandler&& eh = {}) -> bool { + if (specs.type != presentation_type::none && + specs.type != presentation_type::chr) { + check_int_type_spec(specs.type, eh); + return false; + } + if (specs.align == align::numeric || specs.sign != sign::none || specs.alt) + eh.on_error("invalid format specifier for char"); + return true; +} + +// A floating-point presentation format. +enum class float_format : unsigned char { + general, // General: exponent notation or fixed point based on magnitude. + exp, // Exponent notation with the default precision of 6, e.g. 1.2e-3. + fixed, // Fixed point with the default precision of 6, e.g. 0.0012. + hex +}; + +struct float_specs { + int precision; + float_format format : 8; + sign_t sign : 8; + bool upper : 1; + bool locale : 1; + bool binary32 : 1; + bool fallback : 1; + bool showpoint : 1; +}; + +template +FMT_CONSTEXPR auto parse_float_type_spec(const basic_format_specs& specs, + ErrorHandler&& eh = {}) + -> float_specs { + auto result = float_specs(); + result.showpoint = specs.alt; + result.locale = specs.localized; + switch (specs.type) { + case presentation_type::none: + result.format = float_format::general; + break; + case presentation_type::general_upper: + result.upper = true; + FMT_FALLTHROUGH; + case presentation_type::general_lower: + result.format = float_format::general; + break; + case presentation_type::exp_upper: + result.upper = true; + FMT_FALLTHROUGH; + case presentation_type::exp_lower: + result.format = float_format::exp; + result.showpoint |= specs.precision != 0; + break; + case presentation_type::fixed_upper: + result.upper = true; + FMT_FALLTHROUGH; + case presentation_type::fixed_lower: + result.format = float_format::fixed; + result.showpoint |= specs.precision != 0; + break; + case presentation_type::hexfloat_upper: + result.upper = true; + FMT_FALLTHROUGH; + case presentation_type::hexfloat_lower: + result.format = float_format::hex; + break; + default: + eh.on_error("invalid type specifier"); + break; + } + return result; +} + +template +FMT_CONSTEXPR auto check_cstring_type_spec(presentation_type type, + ErrorHandler&& eh = {}) -> bool { + if (type == presentation_type::none || type == presentation_type::string) + return true; + if (type != presentation_type::pointer) eh.on_error("invalid type specifier"); + return false; +} + +template +FMT_CONSTEXPR void check_string_type_spec(presentation_type type, + ErrorHandler&& eh = {}) { + if (type != presentation_type::none && type != presentation_type::string) + eh.on_error("invalid type specifier"); +} + +template +FMT_CONSTEXPR void check_pointer_type_spec(presentation_type type, + ErrorHandler&& eh) { + if (type != presentation_type::none && type != presentation_type::pointer) + eh.on_error("invalid type specifier"); +} + +// A parse_format_specs handler that checks if specifiers are consistent with +// the argument type. +template class specs_checker : public Handler { + private: + detail::type arg_type_; + + FMT_CONSTEXPR void require_numeric_argument() { + if (!is_arithmetic_type(arg_type_)) + this->on_error("format specifier requires numeric argument"); + } + + public: + FMT_CONSTEXPR specs_checker(const Handler& handler, detail::type arg_type) + : Handler(handler), arg_type_(arg_type) {} + + FMT_CONSTEXPR void on_align(align_t align) { + if (align == align::numeric) require_numeric_argument(); + Handler::on_align(align); + } + + FMT_CONSTEXPR void on_sign(sign_t s) { + require_numeric_argument(); + if (is_integral_type(arg_type_) && arg_type_ != type::int_type && + arg_type_ != type::long_long_type && arg_type_ != type::char_type) { + this->on_error("format specifier requires signed argument"); + } + Handler::on_sign(s); + } + + FMT_CONSTEXPR void on_hash() { + require_numeric_argument(); + Handler::on_hash(); + } + + FMT_CONSTEXPR void on_localized() { + require_numeric_argument(); + Handler::on_localized(); + } + + FMT_CONSTEXPR void on_zero() { + require_numeric_argument(); + Handler::on_zero(); + } + + FMT_CONSTEXPR void end_precision() { + if (is_integral_type(arg_type_) || arg_type_ == type::pointer_type) + this->on_error("precision not allowed for this argument type"); + } +}; + +constexpr int invalid_arg_index = -1; + +#if FMT_USE_NONTYPE_TEMPLATE_PARAMETERS +template +constexpr auto get_arg_index_by_name(basic_string_view name) -> int { + if constexpr (detail::is_statically_named_arg()) { + if (name == T::name) return N; + } + if constexpr (sizeof...(Args) > 0) + return get_arg_index_by_name(name); + (void)name; // Workaround an MSVC bug about "unused" parameter. + return invalid_arg_index; +} +#endif + +template +FMT_CONSTEXPR auto get_arg_index_by_name(basic_string_view name) -> int { +#if FMT_USE_NONTYPE_TEMPLATE_PARAMETERS + if constexpr (sizeof...(Args) > 0) + return get_arg_index_by_name<0, Args...>(name); +#endif + (void)name; + return invalid_arg_index; +} + +template +class format_string_checker { + private: + using parse_context_type = compile_parse_context; + enum { num_args = sizeof...(Args) }; + + // Format specifier parsing function. + using parse_func = const Char* (*)(parse_context_type&); + + parse_context_type context_; + parse_func parse_funcs_[num_args > 0 ? num_args : 1]; + + public: + explicit FMT_CONSTEXPR format_string_checker( + basic_string_view format_str, ErrorHandler eh) + : context_(format_str, num_args, eh), + parse_funcs_{&parse_format_specs...} {} + + FMT_CONSTEXPR void on_text(const Char*, const Char*) {} + + FMT_CONSTEXPR auto on_arg_id() -> int { return context_.next_arg_id(); } + FMT_CONSTEXPR auto on_arg_id(int id) -> int { + return context_.check_arg_id(id), id; + } + FMT_CONSTEXPR auto on_arg_id(basic_string_view id) -> int { +#if FMT_USE_NONTYPE_TEMPLATE_PARAMETERS + auto index = get_arg_index_by_name(id); + if (index == invalid_arg_index) on_error("named argument is not found"); + return context_.check_arg_id(index), index; +#else + (void)id; + on_error("compile-time checks for named arguments require C++20 support"); + return 0; +#endif + } + + FMT_CONSTEXPR void on_replacement_field(int, const Char*) {} + + FMT_CONSTEXPR auto on_format_specs(int id, const Char* begin, const Char*) + -> const Char* { + context_.advance_to(context_.begin() + (begin - &*context_.begin())); + // id >= 0 check is a workaround for gcc 10 bug (#2065). + return id >= 0 && id < num_args ? parse_funcs_[id](context_) : begin; + } + + FMT_CONSTEXPR void on_error(const char* message) { + context_.on_error(message); + } +}; + +template ::value), int>> +void check_format_string(S format_str) { + FMT_CONSTEXPR auto s = to_string_view(format_str); + using checker = format_string_checker...>; + FMT_CONSTEXPR bool invalid_format = + (parse_format_string(s, checker(s, {})), true); + ignore_unused(invalid_format); +} template void vformat_to( - buffer& buf, basic_string_view format_str, + buffer& buf, basic_string_view fmt, basic_format_args)> args, - detail::locale_ref loc = {}); - -template ::value)> -inline void vprint_mojibake(std::FILE*, basic_string_view, const Args&) {} + locale_ref loc = {}); FMT_API void vprint_mojibake(std::FILE*, string_view, format_args); #ifndef _WIN32 inline void vprint_mojibake(std::FILE*, string_view, format_args) {} #endif -} // namespace detail +FMT_END_DETAIL_NAMESPACE + +// A formatter specialization for the core types corresponding to detail::type +// constants. +template +struct formatter::value != + detail::type::custom_type>> { + private: + detail::dynamic_format_specs specs_; + + public: + // Parses format specifiers stopping either at the end of the range or at the + // terminating '}'. + template + FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) { + auto begin = ctx.begin(), end = ctx.end(); + if (begin == end) return begin; + using handler_type = detail::dynamic_specs_handler; + auto type = detail::type_constant::value; + auto checker = + detail::specs_checker(handler_type(specs_, ctx), type); + auto it = detail::parse_format_specs(begin, end, checker); + auto eh = ctx.error_handler(); + switch (type) { + case detail::type::none_type: + FMT_ASSERT(false, "invalid argument type"); + break; + case detail::type::bool_type: + if (specs_.type == presentation_type::none || + specs_.type == presentation_type::string) { + break; + } + FMT_FALLTHROUGH; + case detail::type::int_type: + case detail::type::uint_type: + case detail::type::long_long_type: + case detail::type::ulong_long_type: + case detail::type::int128_type: + case detail::type::uint128_type: + detail::check_int_type_spec(specs_.type, eh); + break; + case detail::type::char_type: + detail::check_char_specs(specs_, eh); + break; + case detail::type::float_type: + if (detail::const_check(FMT_USE_FLOAT)) + detail::parse_float_type_spec(specs_, eh); + else + FMT_ASSERT(false, "float support disabled"); + break; + case detail::type::double_type: + if (detail::const_check(FMT_USE_DOUBLE)) + detail::parse_float_type_spec(specs_, eh); + else + FMT_ASSERT(false, "double support disabled"); + break; + case detail::type::long_double_type: + if (detail::const_check(FMT_USE_LONG_DOUBLE)) + detail::parse_float_type_spec(specs_, eh); + else + FMT_ASSERT(false, "long double support disabled"); + break; + case detail::type::cstring_type: + detail::check_cstring_type_spec(specs_.type, eh); + break; + case detail::type::string_type: + detail::check_string_type_spec(specs_.type, eh); + break; + case detail::type::pointer_type: + detail::check_pointer_type_spec(specs_.type, eh); + break; + case detail::type::custom_type: + // Custom format specifiers are checked in parse functions of + // formatter specializations. + break; + } + return it; + } + + template + FMT_CONSTEXPR auto format(const T& val, FormatContext& ctx) const + -> decltype(ctx.out()); +}; + +template struct basic_runtime { basic_string_view str; }; + +/** A compile-time format string. */ +template class basic_format_string { + private: + basic_string_view str_; + + public: + template >::value)> + FMT_CONSTEVAL FMT_INLINE basic_format_string(const S& s) : str_(s) { + static_assert( + detail::count< + (std::is_base_of>::value && + std::is_reference::value)...>() == 0, + "passing views as lvalues is disallowed"); +#ifdef FMT_HAS_CONSTEVAL + if constexpr (detail::count_named_args() == + detail::count_statically_named_args()) { + using checker = detail::format_string_checker...>; + detail::parse_format_string(str_, checker(s, {})); + } +#else + detail::check_format_string(s); +#endif + } + basic_format_string(basic_runtime r) : str_(r.str) {} + + FMT_INLINE operator basic_string_view() const { return str_; } +}; + +#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409 +// Workaround broken conversion on older gcc. +template using format_string = string_view; +template auto runtime(const S& s) -> basic_string_view> { + return s; +} +#else +template +using format_string = basic_format_string...>; +/** + \rst + Creates a runtime format string. + + **Example**:: + + // Check format string at runtime instead of compile-time. + fmt::print(fmt::runtime("{:d}"), "I am not a number"); + \endrst + */ +template auto runtime(const S& s) -> basic_runtime> { + return {{s}}; +} +#endif + +FMT_API auto vformat(string_view fmt, format_args args) -> std::string; + +/** + \rst + Formats ``args`` according to specifications in ``fmt`` and returns the result + as a string. + + **Example**:: + + #include + std::string message = fmt::format("The answer is {}.", 42); + \endrst +*/ +template +FMT_NODISCARD FMT_INLINE auto format(format_string fmt, T&&... args) + -> std::string { + return vformat(fmt, fmt::make_format_args(args...)); +} /** Formats a string and writes the output to ``out``. */ -// GCC 8 and earlier cannot handle std::back_insert_iterator with -// vformat_to(...) overload, so SFINAE on iterator type instead. -template , - FMT_ENABLE_IF(detail::is_output_iterator::value)> -OutputIt vformat_to( - OutputIt out, const S& format_str, - basic_format_args>> args) { - decltype(detail::get_buffer(out)) buf(detail::get_buffer_init(out)); - detail::vformat_to(buf, to_string_view(format_str), args); +template ::value)> +auto vformat_to(OutputIt out, string_view fmt, format_args args) -> OutputIt { + using detail::get_buffer; + auto&& buf = get_buffer(out); + detail::vformat_to(buf, fmt, args, {}); return detail::get_iterator(buf); } /** \rst - Formats arguments, writes the result to the output iterator ``out`` and returns - the iterator past the end of the output range. + Formats ``args`` according to specifications in ``fmt``, writes the result to + the output iterator ``out`` and returns the iterator past the end of the output + range. `format_to` does not append a terminating null character. **Example**:: - std::vector out; + auto out = std::vector(); fmt::format_to(std::back_inserter(out), "{}", 42); \endrst */ -// We cannot use FMT_ENABLE_IF because of a bug in gcc 8.3. -template >::value> -inline auto format_to(OutputIt out, const S& format_str, Args&&... args) -> - typename std::enable_if::type { - const auto& vargs = fmt::make_args_checked(format_str, args...); - return vformat_to(out, to_string_view(format_str), vargs); +template ::value)> +FMT_INLINE auto format_to(OutputIt out, format_string fmt, T&&... args) + -> OutputIt { + return vformat_to(out, fmt, fmt::make_format_args(args...)); } template struct format_to_n_result { @@ -2004,111 +3155,82 @@ template struct format_to_n_result { size_t size; }; -template ::value)> -inline format_to_n_result vformat_to_n( - OutputIt out, size_t n, basic_string_view format_str, - basic_format_args>> args) { - detail::iterator_buffer buf(out, - n); - detail::vformat_to(buf, format_str, args); +template ::value)> +auto vformat_to_n(OutputIt out, size_t n, string_view fmt, format_args args) + -> format_to_n_result { + using traits = detail::fixed_buffer_traits; + auto buf = detail::iterator_buffer(out, n); + detail::vformat_to(buf, fmt, args, {}); return {buf.out(), buf.count()}; } /** - \rst - Formats arguments, writes up to ``n`` characters of the result to the output - iterator ``out`` and returns the total output size and the iterator past the - end of the output range. - \endrst + \rst + Formats ``args`` according to specifications in ``fmt``, writes up to ``n`` + characters of the result to the output iterator ``out`` and returns the total + (not truncated) output size and the iterator past the end of the output range. + `format_to_n` does not append a terminating null character. + \endrst */ -template >::value)> -inline format_to_n_result format_to_n(OutputIt out, size_t n, - const S& format_str, - const Args&... args) { - const auto& vargs = fmt::make_args_checked(format_str, args...); - return vformat_to_n(out, n, to_string_view(format_str), vargs); +template ::value)> +FMT_INLINE auto format_to_n(OutputIt out, size_t n, format_string fmt, + T&&... args) -> format_to_n_result { + return vformat_to_n(out, n, fmt, fmt::make_format_args(args...)); } -/** - Returns the number of characters in the output of - ``format(format_str, args...)``. - */ -template -inline size_t formatted_size(string_view format_str, Args&&... args) { - const auto& vargs = fmt::make_args_checked(format_str, args...); - detail::counting_buffer<> buf; - detail::vformat_to(buf, format_str, vargs); +/** Returns the number of chars in the output of ``format(fmt, args...)``. */ +template +FMT_NODISCARD FMT_INLINE auto formatted_size(format_string fmt, + T&&... args) -> size_t { + auto buf = detail::counting_buffer<>(); + detail::vformat_to(buf, string_view(fmt), fmt::make_format_args(args...), {}); return buf.count(); } -template > -FMT_INLINE std::basic_string vformat( - const S& format_str, - basic_format_args>> args) { - return detail::vformat(to_string_view(format_str), args); -} +FMT_API void vprint(string_view fmt, format_args args); +FMT_API void vprint(std::FILE* f, string_view fmt, format_args args); /** \rst - Formats arguments and returns the result as a string. - - **Example**:: - - #include - std::string message = fmt::format("The answer is {}", 42); - \endrst -*/ -// Pass char_t as a default template parameter instead of using -// std::basic_string> to reduce the symbol size. -template > -FMT_INLINE std::basic_string format(const S& format_str, Args&&... args) { - const auto& vargs = fmt::make_args_checked(format_str, args...); - return detail::vformat(to_string_view(format_str), vargs); -} - -FMT_API void vprint(string_view, format_args); -FMT_API void vprint(std::FILE*, string_view, format_args); - -/** - \rst - Formats ``args`` according to specifications in ``format_str`` and writes the - output to the file ``f``. Strings are assumed to be Unicode-encoded unless the - ``FMT_UNICODE`` macro is set to 0. - - **Example**:: - - fmt::print(stderr, "Don't {}!", "panic"); - \endrst - */ -template > -inline void print(std::FILE* f, const S& format_str, Args&&... args) { - const auto& vargs = fmt::make_args_checked(format_str, args...); - return detail::is_unicode() - ? vprint(f, to_string_view(format_str), vargs) - : detail::vprint_mojibake(f, to_string_view(format_str), vargs); -} - -/** - \rst - Formats ``args`` according to specifications in ``format_str`` and writes - the output to ``stdout``. Strings are assumed to be Unicode-encoded unless - the ``FMT_UNICODE`` macro is set to 0. + Formats ``args`` according to specifications in ``fmt`` and writes the output + to ``stdout``. **Example**:: fmt::print("Elapsed time: {0:.2f} seconds", 1.23); \endrst */ -template > -inline void print(const S& format_str, Args&&... args) { - const auto& vargs = fmt::make_args_checked(format_str, args...); - return detail::is_unicode() - ? vprint(to_string_view(format_str), vargs) - : detail::vprint_mojibake(stdout, to_string_view(format_str), - vargs); +template +FMT_INLINE void print(format_string fmt, T&&... args) { + const auto& vargs = fmt::make_format_args(args...); + return detail::is_utf8() ? vprint(fmt, vargs) + : detail::vprint_mojibake(stdout, fmt, vargs); } + +/** + \rst + Formats ``args`` according to specifications in ``fmt`` and writes the + output to the file ``f``. + + **Example**:: + + fmt::print(stderr, "Don't {}!", "panic"); + \endrst + */ +template +FMT_INLINE void print(std::FILE* f, format_string fmt, T&&... args) { + const auto& vargs = fmt::make_format_args(args...); + return detail::is_utf8() ? vprint(f, fmt, vargs) + : detail::vprint_mojibake(f, fmt, vargs); +} + +FMT_MODULE_EXPORT_END +FMT_GCC_PRAGMA("GCC pop_options") FMT_END_NAMESPACE +#ifdef FMT_HEADER_ONLY +# include "format.h" +#endif #endif // FMT_CORE_H_ diff --git a/Externals/fmt/include/fmt/format-inl.h b/Externals/fmt/include/fmt/format-inl.h index b7cb3209c8..2c51c50aeb 100755 --- a/Externals/fmt/include/fmt/format-inl.h +++ b/Externals/fmt/include/fmt/format-inl.h @@ -8,8 +8,9 @@ #ifndef FMT_FORMAT_INL_H_ #define FMT_FORMAT_INL_H_ -#include +#include #include +#include // errno #include #include #include @@ -27,11 +28,6 @@ #include "format.h" -// Dummy implementations of strerror_r and strerror_s called if corresponding -// system functions are not available. -inline fmt::detail::null<> strerror_r(int, char*, ...) { return {}; } -inline fmt::detail::null<> strerror_s(char*, size_t, ...) { return {}; } - FMT_BEGIN_NAMESPACE namespace detail { @@ -44,6 +40,10 @@ FMT_FUNC void assert_fail(const char* file, int line, const char* message) { std::terminate(); } +FMT_FUNC void throw_format_error(const char* message) { + FMT_THROW(format_error(message)); +} + #ifndef _MSC_VER # define FMT_SNPRINTF snprintf #else // _MSC_VER @@ -57,76 +57,6 @@ inline int fmt_snprintf(char* buffer, size_t size, const char* format, ...) { # define FMT_SNPRINTF fmt_snprintf #endif // _MSC_VER -// A portable thread-safe version of strerror. -// Sets buffer to point to a string describing the error code. -// This can be either a pointer to a string stored in buffer, -// or a pointer to some static immutable string. -// Returns one of the following values: -// 0 - success -// ERANGE - buffer is not large enough to store the error message -// other - failure -// Buffer should be at least of size 1. -inline int safe_strerror(int error_code, char*& buffer, - size_t buffer_size) FMT_NOEXCEPT { - FMT_ASSERT(buffer != nullptr && buffer_size != 0, "invalid buffer"); - - class dispatcher { - private: - int error_code_; - char*& buffer_; - size_t buffer_size_; - - // A noop assignment operator to avoid bogus warnings. - void operator=(const dispatcher&) {} - - // Handle the result of XSI-compliant version of strerror_r. - int handle(int result) { - // glibc versions before 2.13 return result in errno. - return result == -1 ? errno : result; - } - - // Handle the result of GNU-specific version of strerror_r. - FMT_MAYBE_UNUSED - int handle(char* message) { - // If the buffer is full then the message is probably truncated. - if (message == buffer_ && strlen(buffer_) == buffer_size_ - 1) - return ERANGE; - buffer_ = message; - return 0; - } - - // Handle the case when strerror_r is not available. - FMT_MAYBE_UNUSED - int handle(detail::null<>) { - return fallback(strerror_s(buffer_, buffer_size_, error_code_)); - } - - // Fallback to strerror_s when strerror_r is not available. - FMT_MAYBE_UNUSED - int fallback(int result) { - // If the buffer is full then the message is probably truncated. - return result == 0 && strlen(buffer_) == buffer_size_ - 1 ? ERANGE - : result; - } - -#if !FMT_MSC_VER - // Fallback to strerror if strerror_r and strerror_s are not available. - int fallback(detail::null<>) { - errno = 0; - buffer_ = strerror(error_code_); - return errno; - } -#endif - - public: - dispatcher(int err_code, char*& buf, size_t buf_size) - : error_code_(err_code), buffer_(buf), buffer_size_(buf_size) {} - - int run() { return handle(strerror_r(error_code_, buffer_, buffer_size_)); } - }; - return dispatcher(error_code, buffer, buffer_size).run(); -} - FMT_FUNC void format_error_code(detail::buffer& out, int error_code, string_view message) FMT_NOEXCEPT { // Report error code making sure that the output fits into @@ -145,18 +75,18 @@ FMT_FUNC void format_error_code(detail::buffer& out, int error_code, error_code_size += detail::to_unsigned(detail::count_digits(abs_value)); auto it = buffer_appender(out); if (message.size() <= inline_buffer_size - error_code_size) - format_to(it, "{}{}", message, SEP); - format_to(it, "{}{}", ERROR_STR, error_code); - assert(out.size() <= inline_buffer_size); + format_to(it, FMT_STRING("{}{}"), message, SEP); + format_to(it, FMT_STRING("{}{}"), ERROR_STR, error_code); + FMT_ASSERT(out.size() <= inline_buffer_size, ""); } FMT_FUNC void report_error(format_func func, int error_code, - string_view message) FMT_NOEXCEPT { + const char* message) FMT_NOEXCEPT { memory_buffer full_message; func(full_message, error_code, message); // Don't use fwrite_fully because the latter may throw. - (void)std::fwrite(full_message.data(), full_message.size(), 1, stderr); - std::fputc('\n', stderr); + if (std::fwrite(full_message.data(), full_message.size(), 1, stderr) > 0) + std::fputc('\n', stderr); } // A wrapper around fwrite that throws on error. @@ -165,11 +95,8 @@ inline void fwrite_fully(const void* ptr, size_t size, size_t count, size_t written = std::fwrite(ptr, size, count, stream); if (written < count) FMT_THROW(system_error(errno, "cannot write to file")); } -} // namespace detail - -#if !defined(FMT_STATIC_THOUSANDS_SEPARATOR) -namespace detail { +#ifndef FMT_STATIC_THOUSANDS_SEPARATOR template locale_ref::locale_ref(const Locale& loc) : locale_(&loc) { static_assert(std::is_same::value, ""); @@ -180,41 +107,36 @@ template Locale locale_ref::get() const { return locale_ ? *static_cast(locale_) : std::locale(); } -template FMT_FUNC std::string grouping_impl(locale_ref loc) { - return std::use_facet>(loc.get()).grouping(); -} -template FMT_FUNC Char thousands_sep_impl(locale_ref loc) { - return std::use_facet>(loc.get()) - .thousands_sep(); +template +FMT_FUNC auto thousands_sep_impl(locale_ref loc) -> thousands_sep_result { + auto& facet = std::use_facet>(loc.get()); + auto grouping = facet.grouping(); + auto thousands_sep = grouping.empty() ? Char() : facet.thousands_sep(); + return {std::move(grouping), thousands_sep}; } template FMT_FUNC Char decimal_point_impl(locale_ref loc) { return std::use_facet>(loc.get()) .decimal_point(); } -} // namespace detail #else template -FMT_FUNC std::string detail::grouping_impl(locale_ref) { - return "\03"; +FMT_FUNC auto thousands_sep_impl(locale_ref) -> thousands_sep_result { + return {"\03", FMT_STATIC_THOUSANDS_SEPARATOR}; } -template FMT_FUNC Char detail::thousands_sep_impl(locale_ref) { - return FMT_STATIC_THOUSANDS_SEPARATOR; -} -template FMT_FUNC Char detail::decimal_point_impl(locale_ref) { +template FMT_FUNC Char decimal_point_impl(locale_ref) { return '.'; } #endif +} // namespace detail +#if !FMT_MSC_VER FMT_API FMT_FUNC format_error::~format_error() FMT_NOEXCEPT = default; -FMT_API FMT_FUNC system_error::~system_error() FMT_NOEXCEPT = default; +#endif -FMT_FUNC void system_error::init(int err_code, string_view format_str, - format_args args) { - error_code_ = err_code; - memory_buffer buffer; - format_system_error(buffer, err_code, vformat(format_str, args)); - std::runtime_error& base = *this; - base = std::runtime_error(to_string(buffer)); +FMT_FUNC std::system_error vsystem_error(int error_code, string_view format_str, + format_args args) { + auto ec = std::error_code(error_code, std::generic_category()); + return std::system_error(ec, vformat(format_str, args)); } namespace detail { @@ -227,938 +149,153 @@ template <> FMT_FUNC int count_digits<4>(detail::fallback_uintptr n) { return i >= 0 ? i * char_digits + count_digits<4, unsigned>(n.value[i]) : 1; } -template -const typename basic_data::digit_pair basic_data::digits[] = { - {'0', '0'}, {'0', '1'}, {'0', '2'}, {'0', '3'}, {'0', '4'}, {'0', '5'}, - {'0', '6'}, {'0', '7'}, {'0', '8'}, {'0', '9'}, {'1', '0'}, {'1', '1'}, - {'1', '2'}, {'1', '3'}, {'1', '4'}, {'1', '5'}, {'1', '6'}, {'1', '7'}, - {'1', '8'}, {'1', '9'}, {'2', '0'}, {'2', '1'}, {'2', '2'}, {'2', '3'}, - {'2', '4'}, {'2', '5'}, {'2', '6'}, {'2', '7'}, {'2', '8'}, {'2', '9'}, - {'3', '0'}, {'3', '1'}, {'3', '2'}, {'3', '3'}, {'3', '4'}, {'3', '5'}, - {'3', '6'}, {'3', '7'}, {'3', '8'}, {'3', '9'}, {'4', '0'}, {'4', '1'}, - {'4', '2'}, {'4', '3'}, {'4', '4'}, {'4', '5'}, {'4', '6'}, {'4', '7'}, - {'4', '8'}, {'4', '9'}, {'5', '0'}, {'5', '1'}, {'5', '2'}, {'5', '3'}, - {'5', '4'}, {'5', '5'}, {'5', '6'}, {'5', '7'}, {'5', '8'}, {'5', '9'}, - {'6', '0'}, {'6', '1'}, {'6', '2'}, {'6', '3'}, {'6', '4'}, {'6', '5'}, - {'6', '6'}, {'6', '7'}, {'6', '8'}, {'6', '9'}, {'7', '0'}, {'7', '1'}, - {'7', '2'}, {'7', '3'}, {'7', '4'}, {'7', '5'}, {'7', '6'}, {'7', '7'}, - {'7', '8'}, {'7', '9'}, {'8', '0'}, {'8', '1'}, {'8', '2'}, {'8', '3'}, - {'8', '4'}, {'8', '5'}, {'8', '6'}, {'8', '7'}, {'8', '8'}, {'8', '9'}, - {'9', '0'}, {'9', '1'}, {'9', '2'}, {'9', '3'}, {'9', '4'}, {'9', '5'}, - {'9', '6'}, {'9', '7'}, {'9', '8'}, {'9', '9'}}; +// log10(2) = 0x0.4d104d427de7fbcc... +static constexpr uint64_t log10_2_significand = 0x4d104d427de7fbcc; -template -const char basic_data::hex_digits[] = "0123456789abcdef"; +template struct basic_impl_data { + // Normalized 64-bit significands of pow(10, k), for k = -348, -340, ..., 340. + // These are generated by support/compute-powers.py. + static constexpr uint64_t pow10_significands[87] = { + 0xfa8fd5a0081c0288, 0xbaaee17fa23ebf76, 0x8b16fb203055ac76, + 0xcf42894a5dce35ea, 0x9a6bb0aa55653b2d, 0xe61acf033d1a45df, + 0xab70fe17c79ac6ca, 0xff77b1fcbebcdc4f, 0xbe5691ef416bd60c, + 0x8dd01fad907ffc3c, 0xd3515c2831559a83, 0x9d71ac8fada6c9b5, + 0xea9c227723ee8bcb, 0xaecc49914078536d, 0x823c12795db6ce57, + 0xc21094364dfb5637, 0x9096ea6f3848984f, 0xd77485cb25823ac7, + 0xa086cfcd97bf97f4, 0xef340a98172aace5, 0xb23867fb2a35b28e, + 0x84c8d4dfd2c63f3b, 0xc5dd44271ad3cdba, 0x936b9fcebb25c996, + 0xdbac6c247d62a584, 0xa3ab66580d5fdaf6, 0xf3e2f893dec3f126, + 0xb5b5ada8aaff80b8, 0x87625f056c7c4a8b, 0xc9bcff6034c13053, + 0x964e858c91ba2655, 0xdff9772470297ebd, 0xa6dfbd9fb8e5b88f, + 0xf8a95fcf88747d94, 0xb94470938fa89bcf, 0x8a08f0f8bf0f156b, + 0xcdb02555653131b6, 0x993fe2c6d07b7fac, 0xe45c10c42a2b3b06, + 0xaa242499697392d3, 0xfd87b5f28300ca0e, 0xbce5086492111aeb, + 0x8cbccc096f5088cc, 0xd1b71758e219652c, 0x9c40000000000000, + 0xe8d4a51000000000, 0xad78ebc5ac620000, 0x813f3978f8940984, + 0xc097ce7bc90715b3, 0x8f7e32ce7bea5c70, 0xd5d238a4abe98068, + 0x9f4f2726179a2245, 0xed63a231d4c4fb27, 0xb0de65388cc8ada8, + 0x83c7088e1aab65db, 0xc45d1df942711d9a, 0x924d692ca61be758, + 0xda01ee641a708dea, 0xa26da3999aef774a, 0xf209787bb47d6b85, + 0xb454e4a179dd1877, 0x865b86925b9bc5c2, 0xc83553c5c8965d3d, + 0x952ab45cfa97a0b3, 0xde469fbd99a05fe3, 0xa59bc234db398c25, + 0xf6c69a72a3989f5c, 0xb7dcbf5354e9bece, 0x88fcf317f22241e2, + 0xcc20ce9bd35c78a5, 0x98165af37b2153df, 0xe2a0b5dc971f303a, + 0xa8d9d1535ce3b396, 0xfb9b7cd9a4a7443c, 0xbb764c4ca7a44410, + 0x8bab8eefb6409c1a, 0xd01fef10a657842c, 0x9b10a4e5e9913129, + 0xe7109bfba19c0c9d, 0xac2820d9623bf429, 0x80444b5e7aa7cf85, + 0xbf21e44003acdd2d, 0x8e679c2f5e44ff8f, 0xd433179d9c8cb841, + 0x9e19db92b4e31ba9, 0xeb96bf6ebadf77d9, 0xaf87023b9bf0ee6b, + }; -#define FMT_POWERS_OF_10(factor) \ - factor * 10, (factor)*100, (factor)*1000, (factor)*10000, (factor)*100000, \ - (factor)*1000000, (factor)*10000000, (factor)*100000000, \ - (factor)*1000000000 - -template -const uint64_t basic_data::powers_of_10_64[] = { - 1, FMT_POWERS_OF_10(1), FMT_POWERS_OF_10(1000000000ULL), - 10000000000000000000ULL}; - -template -const uint32_t basic_data::zero_or_powers_of_10_32[] = {0, 0, - FMT_POWERS_OF_10(1)}; - -template -const uint64_t basic_data::zero_or_powers_of_10_64[] = { - 0, 0, FMT_POWERS_OF_10(1), FMT_POWERS_OF_10(1000000000ULL), - 10000000000000000000ULL}; - -// Normalized 64-bit significands of pow(10, k), for k = -348, -340, ..., 340. -// These are generated by support/compute-powers.py. -template -const uint64_t basic_data::grisu_pow10_significands[] = { - 0xfa8fd5a0081c0288, 0xbaaee17fa23ebf76, 0x8b16fb203055ac76, - 0xcf42894a5dce35ea, 0x9a6bb0aa55653b2d, 0xe61acf033d1a45df, - 0xab70fe17c79ac6ca, 0xff77b1fcbebcdc4f, 0xbe5691ef416bd60c, - 0x8dd01fad907ffc3c, 0xd3515c2831559a83, 0x9d71ac8fada6c9b5, - 0xea9c227723ee8bcb, 0xaecc49914078536d, 0x823c12795db6ce57, - 0xc21094364dfb5637, 0x9096ea6f3848984f, 0xd77485cb25823ac7, - 0xa086cfcd97bf97f4, 0xef340a98172aace5, 0xb23867fb2a35b28e, - 0x84c8d4dfd2c63f3b, 0xc5dd44271ad3cdba, 0x936b9fcebb25c996, - 0xdbac6c247d62a584, 0xa3ab66580d5fdaf6, 0xf3e2f893dec3f126, - 0xb5b5ada8aaff80b8, 0x87625f056c7c4a8b, 0xc9bcff6034c13053, - 0x964e858c91ba2655, 0xdff9772470297ebd, 0xa6dfbd9fb8e5b88f, - 0xf8a95fcf88747d94, 0xb94470938fa89bcf, 0x8a08f0f8bf0f156b, - 0xcdb02555653131b6, 0x993fe2c6d07b7fac, 0xe45c10c42a2b3b06, - 0xaa242499697392d3, 0xfd87b5f28300ca0e, 0xbce5086492111aeb, - 0x8cbccc096f5088cc, 0xd1b71758e219652c, 0x9c40000000000000, - 0xe8d4a51000000000, 0xad78ebc5ac620000, 0x813f3978f8940984, - 0xc097ce7bc90715b3, 0x8f7e32ce7bea5c70, 0xd5d238a4abe98068, - 0x9f4f2726179a2245, 0xed63a231d4c4fb27, 0xb0de65388cc8ada8, - 0x83c7088e1aab65db, 0xc45d1df942711d9a, 0x924d692ca61be758, - 0xda01ee641a708dea, 0xa26da3999aef774a, 0xf209787bb47d6b85, - 0xb454e4a179dd1877, 0x865b86925b9bc5c2, 0xc83553c5c8965d3d, - 0x952ab45cfa97a0b3, 0xde469fbd99a05fe3, 0xa59bc234db398c25, - 0xf6c69a72a3989f5c, 0xb7dcbf5354e9bece, 0x88fcf317f22241e2, - 0xcc20ce9bd35c78a5, 0x98165af37b2153df, 0xe2a0b5dc971f303a, - 0xa8d9d1535ce3b396, 0xfb9b7cd9a4a7443c, 0xbb764c4ca7a44410, - 0x8bab8eefb6409c1a, 0xd01fef10a657842c, 0x9b10a4e5e9913129, - 0xe7109bfba19c0c9d, 0xac2820d9623bf429, 0x80444b5e7aa7cf85, - 0xbf21e44003acdd2d, 0x8e679c2f5e44ff8f, 0xd433179d9c8cb841, - 0x9e19db92b4e31ba9, 0xeb96bf6ebadf77d9, 0xaf87023b9bf0ee6b, -}; - -// Binary exponents of pow(10, k), for k = -348, -340, ..., 340, corresponding -// to significands above. -template -const int16_t basic_data::grisu_pow10_exponents[] = { - -1220, -1193, -1166, -1140, -1113, -1087, -1060, -1034, -1007, -980, -954, - -927, -901, -874, -847, -821, -794, -768, -741, -715, -688, -661, - -635, -608, -582, -555, -529, -502, -475, -449, -422, -396, -369, - -343, -316, -289, -263, -236, -210, -183, -157, -130, -103, -77, - -50, -24, 3, 30, 56, 83, 109, 136, 162, 189, 216, - 242, 269, 295, 322, 348, 375, 402, 428, 455, 481, 508, - 534, 561, 588, 614, 641, 667, 694, 720, 747, 774, 800, - 827, 853, 880, 907, 933, 960, 986, 1013, 1039, 1066}; - -template -const divtest_table_entry basic_data::divtest_table_for_pow5_32[] = - {{0x00000001, 0xffffffff}, {0xcccccccd, 0x33333333}, - {0xc28f5c29, 0x0a3d70a3}, {0x26e978d5, 0x020c49ba}, - {0x3afb7e91, 0x0068db8b}, {0x0bcbe61d, 0x0014f8b5}, - {0x68c26139, 0x000431bd}, {0xae8d46a5, 0x0000d6bf}, - {0x22e90e21, 0x00002af3}, {0x3a2e9c6d, 0x00000897}, - {0x3ed61f49, 0x000001b7}}; - -template -const divtest_table_entry basic_data::divtest_table_for_pow5_64[] = - {{0x0000000000000001, 0xffffffffffffffff}, - {0xcccccccccccccccd, 0x3333333333333333}, - {0x8f5c28f5c28f5c29, 0x0a3d70a3d70a3d70}, - {0x1cac083126e978d5, 0x020c49ba5e353f7c}, - {0xd288ce703afb7e91, 0x0068db8bac710cb2}, - {0x5d4e8fb00bcbe61d, 0x0014f8b588e368f0}, - {0x790fb65668c26139, 0x000431bde82d7b63}, - {0xe5032477ae8d46a5, 0x0000d6bf94d5e57a}, - {0xc767074b22e90e21, 0x00002af31dc46118}, - {0x8e47ce423a2e9c6d, 0x0000089705f4136b}, - {0x4fa7f60d3ed61f49, 0x000001b7cdfd9d7b}, - {0x0fee64690c913975, 0x00000057f5ff85e5}, - {0x3662e0e1cf503eb1, 0x000000119799812d}, - {0xa47a2cf9f6433fbd, 0x0000000384b84d09}, - {0x54186f653140a659, 0x00000000b424dc35}, - {0x7738164770402145, 0x0000000024075f3d}, - {0xe4a4d1417cd9a041, 0x000000000734aca5}, - {0xc75429d9e5c5200d, 0x000000000170ef54}, - {0xc1773b91fac10669, 0x000000000049c977}, - {0x26b172506559ce15, 0x00000000000ec1e4}, - {0xd489e3a9addec2d1, 0x000000000002f394}, - {0x90e860bb892c8d5d, 0x000000000000971d}, - {0x502e79bf1b6f4f79, 0x0000000000001e39}, - {0xdcd618596be30fe5, 0x000000000000060b}}; - -template -const uint64_t basic_data::dragonbox_pow10_significands_64[] = { - 0x81ceb32c4b43fcf5, 0xa2425ff75e14fc32, 0xcad2f7f5359a3b3f, - 0xfd87b5f28300ca0e, 0x9e74d1b791e07e49, 0xc612062576589ddb, - 0xf79687aed3eec552, 0x9abe14cd44753b53, 0xc16d9a0095928a28, - 0xf1c90080baf72cb2, 0x971da05074da7bef, 0xbce5086492111aeb, - 0xec1e4a7db69561a6, 0x9392ee8e921d5d08, 0xb877aa3236a4b44a, - 0xe69594bec44de15c, 0x901d7cf73ab0acda, 0xb424dc35095cd810, - 0xe12e13424bb40e14, 0x8cbccc096f5088cc, 0xafebff0bcb24aaff, - 0xdbe6fecebdedd5bf, 0x89705f4136b4a598, 0xabcc77118461cefd, - 0xd6bf94d5e57a42bd, 0x8637bd05af6c69b6, 0xa7c5ac471b478424, - 0xd1b71758e219652c, 0x83126e978d4fdf3c, 0xa3d70a3d70a3d70b, - 0xcccccccccccccccd, 0x8000000000000000, 0xa000000000000000, - 0xc800000000000000, 0xfa00000000000000, 0x9c40000000000000, - 0xc350000000000000, 0xf424000000000000, 0x9896800000000000, - 0xbebc200000000000, 0xee6b280000000000, 0x9502f90000000000, - 0xba43b74000000000, 0xe8d4a51000000000, 0x9184e72a00000000, - 0xb5e620f480000000, 0xe35fa931a0000000, 0x8e1bc9bf04000000, - 0xb1a2bc2ec5000000, 0xde0b6b3a76400000, 0x8ac7230489e80000, - 0xad78ebc5ac620000, 0xd8d726b7177a8000, 0x878678326eac9000, - 0xa968163f0a57b400, 0xd3c21bcecceda100, 0x84595161401484a0, - 0xa56fa5b99019a5c8, 0xcecb8f27f4200f3a, 0x813f3978f8940984, - 0xa18f07d736b90be5, 0xc9f2c9cd04674ede, 0xfc6f7c4045812296, - 0x9dc5ada82b70b59d, 0xc5371912364ce305, 0xf684df56c3e01bc6, - 0x9a130b963a6c115c, 0xc097ce7bc90715b3, 0xf0bdc21abb48db20, - 0x96769950b50d88f4, 0xbc143fa4e250eb31, 0xeb194f8e1ae525fd, - 0x92efd1b8d0cf37be, 0xb7abc627050305ad, 0xe596b7b0c643c719, - 0x8f7e32ce7bea5c6f, 0xb35dbf821ae4f38b, 0xe0352f62a19e306e}; - -template -const uint128_wrapper basic_data::dragonbox_pow10_significands_128[] = { -#if FMT_USE_FULL_CACHE_DRAGONBOX - {0xff77b1fcbebcdc4f, 0x25e8e89c13bb0f7b}, - {0x9faacf3df73609b1, 0x77b191618c54e9ad}, - {0xc795830d75038c1d, 0xd59df5b9ef6a2418}, - {0xf97ae3d0d2446f25, 0x4b0573286b44ad1e}, - {0x9becce62836ac577, 0x4ee367f9430aec33}, - {0xc2e801fb244576d5, 0x229c41f793cda740}, - {0xf3a20279ed56d48a, 0x6b43527578c11110}, - {0x9845418c345644d6, 0x830a13896b78aaaa}, - {0xbe5691ef416bd60c, 0x23cc986bc656d554}, - {0xedec366b11c6cb8f, 0x2cbfbe86b7ec8aa9}, - {0x94b3a202eb1c3f39, 0x7bf7d71432f3d6aa}, - {0xb9e08a83a5e34f07, 0xdaf5ccd93fb0cc54}, - {0xe858ad248f5c22c9, 0xd1b3400f8f9cff69}, - {0x91376c36d99995be, 0x23100809b9c21fa2}, - {0xb58547448ffffb2d, 0xabd40a0c2832a78b}, - {0xe2e69915b3fff9f9, 0x16c90c8f323f516d}, - {0x8dd01fad907ffc3b, 0xae3da7d97f6792e4}, - {0xb1442798f49ffb4a, 0x99cd11cfdf41779d}, - {0xdd95317f31c7fa1d, 0x40405643d711d584}, - {0x8a7d3eef7f1cfc52, 0x482835ea666b2573}, - {0xad1c8eab5ee43b66, 0xda3243650005eed0}, - {0xd863b256369d4a40, 0x90bed43e40076a83}, - {0x873e4f75e2224e68, 0x5a7744a6e804a292}, - {0xa90de3535aaae202, 0x711515d0a205cb37}, - {0xd3515c2831559a83, 0x0d5a5b44ca873e04}, - {0x8412d9991ed58091, 0xe858790afe9486c3}, - {0xa5178fff668ae0b6, 0x626e974dbe39a873}, - {0xce5d73ff402d98e3, 0xfb0a3d212dc81290}, - {0x80fa687f881c7f8e, 0x7ce66634bc9d0b9a}, - {0xa139029f6a239f72, 0x1c1fffc1ebc44e81}, - {0xc987434744ac874e, 0xa327ffb266b56221}, - {0xfbe9141915d7a922, 0x4bf1ff9f0062baa9}, - {0x9d71ac8fada6c9b5, 0x6f773fc3603db4aa}, - {0xc4ce17b399107c22, 0xcb550fb4384d21d4}, - {0xf6019da07f549b2b, 0x7e2a53a146606a49}, - {0x99c102844f94e0fb, 0x2eda7444cbfc426e}, - {0xc0314325637a1939, 0xfa911155fefb5309}, - {0xf03d93eebc589f88, 0x793555ab7eba27cb}, - {0x96267c7535b763b5, 0x4bc1558b2f3458df}, - {0xbbb01b9283253ca2, 0x9eb1aaedfb016f17}, - {0xea9c227723ee8bcb, 0x465e15a979c1cadd}, - {0x92a1958a7675175f, 0x0bfacd89ec191eca}, - {0xb749faed14125d36, 0xcef980ec671f667c}, - {0xe51c79a85916f484, 0x82b7e12780e7401b}, - {0x8f31cc0937ae58d2, 0xd1b2ecb8b0908811}, - {0xb2fe3f0b8599ef07, 0x861fa7e6dcb4aa16}, - {0xdfbdcece67006ac9, 0x67a791e093e1d49b}, - {0x8bd6a141006042bd, 0xe0c8bb2c5c6d24e1}, - {0xaecc49914078536d, 0x58fae9f773886e19}, - {0xda7f5bf590966848, 0xaf39a475506a899f}, - {0x888f99797a5e012d, 0x6d8406c952429604}, - {0xaab37fd7d8f58178, 0xc8e5087ba6d33b84}, - {0xd5605fcdcf32e1d6, 0xfb1e4a9a90880a65}, - {0x855c3be0a17fcd26, 0x5cf2eea09a550680}, - {0xa6b34ad8c9dfc06f, 0xf42faa48c0ea481f}, - {0xd0601d8efc57b08b, 0xf13b94daf124da27}, - {0x823c12795db6ce57, 0x76c53d08d6b70859}, - {0xa2cb1717b52481ed, 0x54768c4b0c64ca6f}, - {0xcb7ddcdda26da268, 0xa9942f5dcf7dfd0a}, - {0xfe5d54150b090b02, 0xd3f93b35435d7c4d}, - {0x9efa548d26e5a6e1, 0xc47bc5014a1a6db0}, - {0xc6b8e9b0709f109a, 0x359ab6419ca1091c}, - {0xf867241c8cc6d4c0, 0xc30163d203c94b63}, - {0x9b407691d7fc44f8, 0x79e0de63425dcf1e}, - {0xc21094364dfb5636, 0x985915fc12f542e5}, - {0xf294b943e17a2bc4, 0x3e6f5b7b17b2939e}, - {0x979cf3ca6cec5b5a, 0xa705992ceecf9c43}, - {0xbd8430bd08277231, 0x50c6ff782a838354}, - {0xece53cec4a314ebd, 0xa4f8bf5635246429}, - {0x940f4613ae5ed136, 0x871b7795e136be9a}, - {0xb913179899f68584, 0x28e2557b59846e40}, - {0xe757dd7ec07426e5, 0x331aeada2fe589d0}, - {0x9096ea6f3848984f, 0x3ff0d2c85def7622}, - {0xb4bca50b065abe63, 0x0fed077a756b53aa}, - {0xe1ebce4dc7f16dfb, 0xd3e8495912c62895}, - {0x8d3360f09cf6e4bd, 0x64712dd7abbbd95d}, - {0xb080392cc4349dec, 0xbd8d794d96aacfb4}, - {0xdca04777f541c567, 0xecf0d7a0fc5583a1}, - {0x89e42caaf9491b60, 0xf41686c49db57245}, - {0xac5d37d5b79b6239, 0x311c2875c522ced6}, - {0xd77485cb25823ac7, 0x7d633293366b828c}, - {0x86a8d39ef77164bc, 0xae5dff9c02033198}, - {0xa8530886b54dbdeb, 0xd9f57f830283fdfd}, - {0xd267caa862a12d66, 0xd072df63c324fd7c}, - 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{0x8bab8eefb6409c1a, 0x1ad089b6c2f7548e}, - {0xae9672aba3d0c320, 0xa184ac2473b529b1}, - {0xda3c0f568cc4f3e8, 0xc9e5d72d90a2741e}, - {0x8865899617fb1871, 0x7e2fa67c7a658892}, - {0xaa7eebfb9df9de8d, 0xddbb901b98feeab7}, - {0xd51ea6fa85785631, 0x552a74227f3ea565}, - {0x8533285c936b35de, 0xd53a88958f87275f}, - {0xa67ff273b8460356, 0x8a892abaf368f137}, - {0xd01fef10a657842c, 0x2d2b7569b0432d85}, - {0x8213f56a67f6b29b, 0x9c3b29620e29fc73}, - {0xa298f2c501f45f42, 0x8349f3ba91b47b8f}, - {0xcb3f2f7642717713, 0x241c70a936219a73}, - {0xfe0efb53d30dd4d7, 0xed238cd383aa0110}, - {0x9ec95d1463e8a506, 0xf4363804324a40aa}, - {0xc67bb4597ce2ce48, 0xb143c6053edcd0d5}, - {0xf81aa16fdc1b81da, 0xdd94b7868e94050a}, - {0x9b10a4e5e9913128, 0xca7cf2b4191c8326}, - {0xc1d4ce1f63f57d72, 0xfd1c2f611f63a3f0}, - {0xf24a01a73cf2dccf, 0xbc633b39673c8cec}, - {0x976e41088617ca01, 0xd5be0503e085d813}, - {0xbd49d14aa79dbc82, 0x4b2d8644d8a74e18}, - {0xec9c459d51852ba2, 0xddf8e7d60ed1219e}, - {0x93e1ab8252f33b45, 0xcabb90e5c942b503}, - {0xb8da1662e7b00a17, 0x3d6a751f3b936243}, - {0xe7109bfba19c0c9d, 0x0cc512670a783ad4}, - {0x906a617d450187e2, 0x27fb2b80668b24c5}, - {0xb484f9dc9641e9da, 0xb1f9f660802dedf6}, - {0xe1a63853bbd26451, 0x5e7873f8a0396973}, - {0x8d07e33455637eb2, 0xdb0b487b6423e1e8}, - {0xb049dc016abc5e5f, 0x91ce1a9a3d2cda62}, - {0xdc5c5301c56b75f7, 0x7641a140cc7810fb}, - {0x89b9b3e11b6329ba, 0xa9e904c87fcb0a9d}, - {0xac2820d9623bf429, 0x546345fa9fbdcd44}, - {0xd732290fbacaf133, 0xa97c177947ad4095}, - {0x867f59a9d4bed6c0, 0x49ed8eabcccc485d}, - {0xa81f301449ee8c70, 0x5c68f256bfff5a74}, - {0xd226fc195c6a2f8c, 0x73832eec6fff3111}, - {0x83585d8fd9c25db7, 0xc831fd53c5ff7eab}, - {0xa42e74f3d032f525, 0xba3e7ca8b77f5e55}, - {0xcd3a1230c43fb26f, 0x28ce1bd2e55f35eb}, - {0x80444b5e7aa7cf85, 0x7980d163cf5b81b3}, - {0xa0555e361951c366, 0xd7e105bcc332621f}, - {0xc86ab5c39fa63440, 0x8dd9472bf3fefaa7}, - {0xfa856334878fc150, 0xb14f98f6f0feb951}, - {0x9c935e00d4b9d8d2, 0x6ed1bf9a569f33d3}, - {0xc3b8358109e84f07, 0x0a862f80ec4700c8}, - {0xf4a642e14c6262c8, 0xcd27bb612758c0fa}, - {0x98e7e9cccfbd7dbd, 0x8038d51cb897789c}, - {0xbf21e44003acdd2c, 0xe0470a63e6bd56c3}, - {0xeeea5d5004981478, 0x1858ccfce06cac74}, - {0x95527a5202df0ccb, 0x0f37801e0c43ebc8}, - {0xbaa718e68396cffd, 0xd30560258f54e6ba}, - {0xe950df20247c83fd, 0x47c6b82ef32a2069}, - {0x91d28b7416cdd27e, 0x4cdc331d57fa5441}, - {0xb6472e511c81471d, 0xe0133fe4adf8e952}, - {0xe3d8f9e563a198e5, 0x58180fddd97723a6}, - {0x8e679c2f5e44ff8f, 0x570f09eaa7ea7648}, - {0xb201833b35d63f73, 0x2cd2cc6551e513da}, - {0xde81e40a034bcf4f, 0xf8077f7ea65e58d1}, - {0x8b112e86420f6191, 0xfb04afaf27faf782}, - {0xadd57a27d29339f6, 0x79c5db9af1f9b563}, - {0xd94ad8b1c7380874, 0x18375281ae7822bc}, - {0x87cec76f1c830548, 0x8f2293910d0b15b5}, - {0xa9c2794ae3a3c69a, 0xb2eb3875504ddb22}, - {0xd433179d9c8cb841, 0x5fa60692a46151eb}, - {0x849feec281d7f328, 0xdbc7c41ba6bcd333}, - {0xa5c7ea73224deff3, 0x12b9b522906c0800}, - {0xcf39e50feae16bef, 0xd768226b34870a00}, - {0x81842f29f2cce375, 0xe6a1158300d46640}, - {0xa1e53af46f801c53, 0x60495ae3c1097fd0}, - {0xca5e89b18b602368, 0x385bb19cb14bdfc4}, - {0xfcf62c1dee382c42, 0x46729e03dd9ed7b5}, - {0x9e19db92b4e31ba9, 0x6c07a2c26a8346d1}, - {0xc5a05277621be293, 0xc7098b7305241885}, - {0xf70867153aa2db38, 0xb8cbee4fc66d1ea7} -#else - {0xff77b1fcbebcdc4f, 0x25e8e89c13bb0f7b}, - {0xce5d73ff402d98e3, 0xfb0a3d212dc81290}, - {0xa6b34ad8c9dfc06f, 0xf42faa48c0ea481f}, - {0x86a8d39ef77164bc, 0xae5dff9c02033198}, - {0xd98ddaee19068c76, 0x3badd624dd9b0958}, - {0xafbd2350644eeacf, 0xe5d1929ef90898fb}, - {0x8df5efabc5979c8f, 0xca8d3ffa1ef463c2}, - {0xe55990879ddcaabd, 0xcc420a6a101d0516}, - {0xb94470938fa89bce, 0xf808e40e8d5b3e6a}, - {0x95a8637627989aad, 0xdde7001379a44aa9}, - {0xf1c90080baf72cb1, 0x5324c68b12dd6339}, - {0xc350000000000000, 0x0000000000000000}, - {0x9dc5ada82b70b59d, 0xf020000000000000}, - {0xfee50b7025c36a08, 0x02f236d04753d5b4}, - {0xcde6fd5e09abcf26, 0xed4c0226b55e6f86}, - {0xa6539930bf6bff45, 0x84db8346b786151c}, - {0x865b86925b9bc5c2, 0x0b8a2392ba45a9b2}, - {0xd910f7ff28069da4, 0x1b2ba1518094da04}, - {0xaf58416654a6babb, 0x387ac8d1970027b2}, - {0x8da471a9de737e24, 0x5ceaecfed289e5d2}, - {0xe4d5e82392a40515, 0x0fabaf3feaa5334a}, - {0xb8da1662e7b00a17, 0x3d6a751f3b936243}, - {0x95527a5202df0ccb, 0x0f37801e0c43ebc8} +#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409 +# pragma GCC diagnostic push +# pragma GCC diagnostic ignored "-Wnarrowing" #endif -}; - -#if !FMT_USE_FULL_CACHE_DRAGONBOX -template -const uint64_t basic_data::powers_of_5_64[] = { - 0x0000000000000001, 0x0000000000000005, 0x0000000000000019, - 0x000000000000007d, 0x0000000000000271, 0x0000000000000c35, - 0x0000000000003d09, 0x000000000001312d, 0x000000000005f5e1, - 0x00000000001dcd65, 0x00000000009502f9, 0x0000000002e90edd, - 0x000000000e8d4a51, 0x0000000048c27395, 0x000000016bcc41e9, - 0x000000071afd498d, 0x0000002386f26fc1, 0x000000b1a2bc2ec5, - 0x000003782dace9d9, 0x00001158e460913d, 0x000056bc75e2d631, - 0x0001b1ae4d6e2ef5, 0x000878678326eac9, 0x002a5a058fc295ed, - 0x00d3c21bcecceda1, 0x0422ca8b0a00a425, 0x14adf4b7320334b9}; - -template -const uint32_t basic_data::dragonbox_pow10_recovery_errors[] = { - 0x50001400, 0x54044100, 0x54014555, 0x55954415, 0x54115555, 0x00000001, - 0x50000000, 0x00104000, 0x54010004, 0x05004001, 0x55555544, 0x41545555, - 0x54040551, 0x15445545, 0x51555514, 0x10000015, 0x00101100, 0x01100015, - 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x04450514, 0x45414110, - 0x55555145, 0x50544050, 0x15040155, 0x11054140, 0x50111514, 0x11451454, - 0x00400541, 0x00000000, 0x55555450, 0x10056551, 0x10054011, 0x55551014, - 0x69514555, 0x05151109, 0x00155555}; + // Binary exponents of pow(10, k), for k = -348, -340, ..., 340, corresponding + // to significands above. + static constexpr int16_t pow10_exponents[87] = { + -1220, -1193, -1166, -1140, -1113, -1087, -1060, -1034, -1007, -980, -954, + -927, -901, -874, -847, -821, -794, -768, -741, -715, -688, -661, + -635, -608, -582, -555, -529, -502, -475, -449, -422, -396, -369, + -343, -316, -289, -263, -236, -210, -183, -157, -130, -103, -77, + -50, -24, 3, 30, 56, 83, 109, 136, 162, 189, 216, + 242, 269, 295, 322, 348, 375, 402, 428, 455, 481, 508, + 534, 561, 588, 614, 641, 667, 694, 720, 747, 774, 800, + 827, 853, 880, 907, 933, 960, 986, 1013, 1039, 1066}; +#if FMT_GCC_VERSION && FMT_GCC_VERSION < 409 +# pragma GCC diagnostic pop #endif + static constexpr uint64_t power_of_10_64[20] = { + 1, FMT_POWERS_OF_10(1ULL), FMT_POWERS_OF_10(1000000000ULL), + 10000000000000000000ULL}; +}; + +// This is a struct rather than an alias to avoid shadowing warnings in gcc. +struct impl_data : basic_impl_data<> {}; + +#if __cplusplus < 201703L template -const char basic_data::foreground_color[] = "\x1b[38;2;"; -template -const char basic_data::background_color[] = "\x1b[48;2;"; -template const char basic_data::reset_color[] = "\x1b[0m"; -template const wchar_t basic_data::wreset_color[] = L"\x1b[0m"; -template const char basic_data::signs[] = {0, '-', '+', ' '}; -template -const char basic_data::left_padding_shifts[] = {31, 31, 0, 1, 0}; -template -const char basic_data::right_padding_shifts[] = {0, 31, 0, 1, 0}; +constexpr uint64_t basic_impl_data::pow10_significands[]; +template constexpr int16_t basic_impl_data::pow10_exponents[]; +template constexpr uint64_t basic_impl_data::power_of_10_64[]; +#endif template struct bits { static FMT_CONSTEXPR_DECL const int value = static_cast(sizeof(T) * std::numeric_limits::digits); }; -class fp; -template fp normalize(fp value); - -// Lower (upper) boundary is a value half way between a floating-point value -// and its predecessor (successor). Boundaries have the same exponent as the -// value so only significands are stored. -struct boundaries { - uint64_t lower; - uint64_t upper; -}; - -// A handmade floating-point number f * pow(2, e). -class fp { - private: - using significand_type = uint64_t; - - template - using is_supported_float = bool_constant; - - public: - significand_type f; - int e; - - // All sizes are in bits. +// Returns the number of significand bits in Float excluding the implicit bit. +template constexpr int num_significand_bits() { // Subtract 1 to account for an implicit most significant bit in the // normalized form. - static FMT_CONSTEXPR_DECL const int double_significand_size = - std::numeric_limits::digits - 1; - static FMT_CONSTEXPR_DECL const uint64_t implicit_bit = - 1ULL << double_significand_size; - static FMT_CONSTEXPR_DECL const int significand_size = - bits::value; + return std::numeric_limits::digits - 1; +} - fp() : f(0), e(0) {} - fp(uint64_t f_val, int e_val) : f(f_val), e(e_val) {} +// A floating-point number f * pow(2, e). +struct fp { + uint64_t f; + int e; - // Constructs fp from an IEEE754 double. It is a template to prevent compile - // errors on platforms where double is not IEEE754. - template explicit fp(Double d) { assign(d); } + static constexpr const int num_significand_bits = bits::value; + + constexpr fp() : f(0), e(0) {} + constexpr fp(uint64_t f_val, int e_val) : f(f_val), e(e_val) {} + + // Constructs fp from an IEEE754 floating-point number. It is a template to + // prevent compile errors on systems where n is not IEEE754. + template explicit FMT_CONSTEXPR fp(Float n) { assign(n); } + + template + using is_supported = bool_constant; // Assigns d to this and return true iff predecessor is closer than successor. - template ::value)> - bool assign(Float d) { + template ::value)> + FMT_CONSTEXPR bool assign(Float n) { // Assume float is in the format [sign][exponent][significand]. - using limits = std::numeric_limits; - const int float_significand_size = limits::digits - 1; - const int exponent_size = - bits::value - float_significand_size - 1; // -1 for sign - const uint64_t float_implicit_bit = 1ULL << float_significand_size; - const uint64_t significand_mask = float_implicit_bit - 1; - const uint64_t exponent_mask = (~0ULL >> 1) & ~significand_mask; - const int exponent_bias = (1 << exponent_size) - limits::max_exponent - 1; + const int num_float_significand_bits = + detail::num_significand_bits(); + const uint64_t implicit_bit = 1ULL << num_float_significand_bits; + const uint64_t significand_mask = implicit_bit - 1; constexpr bool is_double = sizeof(Float) == sizeof(uint64_t); - auto u = bit_cast>(d); + auto u = bit_cast>(n); f = u & significand_mask; + const uint64_t exponent_mask = (~0ULL >> 1) & ~significand_mask; int biased_e = - static_cast((u & exponent_mask) >> float_significand_size); - // Predecessor is closer if d is a normalized power of 2 (f == 0) other than - // the smallest normalized number (biased_e > 1). + static_cast((u & exponent_mask) >> num_float_significand_bits); + // The predecessor is closer if n is a normalized power of 2 (f == 0) other + // than the smallest normalized number (biased_e > 1). bool is_predecessor_closer = f == 0 && biased_e > 1; if (biased_e != 0) - f += float_implicit_bit; + f += implicit_bit; else biased_e = 1; // Subnormals use biased exponent 1 (min exponent). - e = biased_e - exponent_bias - float_significand_size; + const int exponent_bias = std::numeric_limits::max_exponent - 1; + e = biased_e - exponent_bias - num_float_significand_bits; return is_predecessor_closer; } - template ::value)> + template ::value)> bool assign(Float) { - *this = fp(); + FMT_ASSERT(false, ""); return false; } }; // Normalizes the value converted from double and multiplied by (1 << SHIFT). -template fp normalize(fp value) { +template FMT_CONSTEXPR fp normalize(fp value) { // Handle subnormals. - const auto shifted_implicit_bit = fp::implicit_bit << SHIFT; + const uint64_t implicit_bit = 1ULL << num_significand_bits(); + const auto shifted_implicit_bit = implicit_bit << SHIFT; while ((value.f & shifted_implicit_bit) == 0) { value.f <<= 1; --value.e; } // Subtract 1 to account for hidden bit. const auto offset = - fp::significand_size - fp::double_significand_size - SHIFT - 1; + fp::num_significand_bits - num_significand_bits() - SHIFT - 1; value.f <<= offset; value.e -= offset; return value; @@ -1167,7 +304,7 @@ template fp normalize(fp value) { inline bool operator==(fp x, fp y) { return x.f == y.f && x.e == y.e; } // Computes lhs * rhs / pow(2, 64) rounded to nearest with half-up tie breaking. -inline uint64_t multiply(uint64_t lhs, uint64_t rhs) { +FMT_CONSTEXPR inline uint64_t multiply(uint64_t lhs, uint64_t rhs) { #if FMT_USE_INT128 auto product = static_cast<__uint128_t>(lhs) * rhs; auto f = static_cast(product >> 64); @@ -1184,15 +321,18 @@ inline uint64_t multiply(uint64_t lhs, uint64_t rhs) { #endif } -inline fp operator*(fp x, fp y) { return {multiply(x.f, y.f), x.e + y.e + 64}; } +FMT_CONSTEXPR inline fp operator*(fp x, fp y) { + return {multiply(x.f, y.f), x.e + y.e + 64}; +} // Returns a cached power of 10 `c_k = c_k.f * pow(2, c_k.e)` such that its // (binary) exponent satisfies `min_exponent <= c_k.e <= min_exponent + 28`. -inline fp get_cached_power(int min_exponent, int& pow10_exponent) { +FMT_CONSTEXPR inline fp get_cached_power(int min_exponent, + int& pow10_exponent) { const int shift = 32; - const auto significand = static_cast(data::log10_2_significand); + const auto significand = static_cast(log10_2_significand); int index = static_cast( - ((min_exponent + fp::significand_size - 1) * (significand >> shift) + + ((min_exponent + fp::num_significand_bits - 1) * (significand >> shift) + ((int64_t(1) << shift) - 1)) // ceil >> 32 // arithmetic shift ); @@ -1202,8 +342,8 @@ inline fp get_cached_power(int min_exponent, int& pow10_exponent) { const int dec_exp_step = 8; index = (index - first_dec_exp - 1) / dec_exp_step + 1; pow10_exponent = first_dec_exp + index * dec_exp_step; - return {data::grisu_pow10_significands[index], - data::grisu_pow10_exponents[index]}; + return {impl_data::pow10_significands[index], + impl_data::pow10_exponents[index]}; } // A simple accumulator to hold the sums of terms in bigint::square if uint128_t @@ -1212,15 +352,17 @@ struct accumulator { uint64_t lower; uint64_t upper; - accumulator() : lower(0), upper(0) {} - explicit operator uint32_t() const { return static_cast(lower); } + constexpr accumulator() : lower(0), upper(0) {} + constexpr explicit operator uint32_t() const { + return static_cast(lower); + } - void operator+=(uint64_t n) { + FMT_CONSTEXPR void operator+=(uint64_t n) { lower += n; if (lower < n) ++upper; } - void operator>>=(int shift) { - assert(shift == 32); + FMT_CONSTEXPR void operator>>=(int shift) { + FMT_ASSERT(shift == 32, ""); (void)shift; lower = (upper << 32) | (lower >> 32); upper >>= 32; @@ -1237,27 +379,31 @@ class bigint { basic_memory_buffer bigits_; int exp_; - bigit operator[](int index) const { return bigits_[to_unsigned(index)]; } - bigit& operator[](int index) { return bigits_[to_unsigned(index)]; } + FMT_CONSTEXPR20 bigit operator[](int index) const { + return bigits_[to_unsigned(index)]; + } + FMT_CONSTEXPR20 bigit& operator[](int index) { + return bigits_[to_unsigned(index)]; + } static FMT_CONSTEXPR_DECL const int bigit_bits = bits::value; friend struct formatter; - void subtract_bigits(int index, bigit other, bigit& borrow) { + FMT_CONSTEXPR20 void subtract_bigits(int index, bigit other, bigit& borrow) { auto result = static_cast((*this)[index]) - other - borrow; (*this)[index] = static_cast(result); borrow = static_cast(result >> (bigit_bits * 2 - 1)); } - void remove_leading_zeros() { + FMT_CONSTEXPR20 void remove_leading_zeros() { int num_bigits = static_cast(bigits_.size()) - 1; while (num_bigits > 0 && (*this)[num_bigits] == 0) --num_bigits; bigits_.resize(to_unsigned(num_bigits + 1)); } // Computes *this -= other assuming aligned bigints and *this >= other. - void subtract_aligned(const bigint& other) { + FMT_CONSTEXPR20 void subtract_aligned(const bigint& other) { FMT_ASSERT(other.exp_ >= exp_, "unaligned bigints"); FMT_ASSERT(compare(*this, other) >= 0, ""); bigit borrow = 0; @@ -1268,7 +414,7 @@ class bigint { remove_leading_zeros(); } - void multiply(uint32_t value) { + FMT_CONSTEXPR20 void multiply(uint32_t value) { const double_bigit wide_value = value; bigit carry = 0; for (size_t i = 0, n = bigits_.size(); i < n; ++i) { @@ -1279,7 +425,7 @@ class bigint { if (carry != 0) bigits_.push_back(carry); } - void multiply(uint64_t value) { + FMT_CONSTEXPR20 void multiply(uint64_t value) { const bigit mask = ~bigit(0); const double_bigit lower = value & mask; const double_bigit upper = value >> bigit_bits; @@ -1297,14 +443,16 @@ class bigint { } public: - bigint() : exp_(0) {} + FMT_CONSTEXPR20 bigint() : exp_(0) {} explicit bigint(uint64_t n) { assign(n); } - ~bigint() { assert(bigits_.capacity() <= bigits_capacity); } + FMT_CONSTEXPR20 ~bigint() { + FMT_ASSERT(bigits_.capacity() <= bigits_capacity, ""); + } bigint(const bigint&) = delete; void operator=(const bigint&) = delete; - void assign(const bigint& other) { + FMT_CONSTEXPR20 void assign(const bigint& other) { auto size = other.bigits_.size(); bigits_.resize(size); auto data = other.bigits_.data(); @@ -1312,7 +460,7 @@ class bigint { exp_ = other.exp_; } - void assign(uint64_t n) { + FMT_CONSTEXPR20 void assign(uint64_t n) { size_t num_bigits = 0; do { bigits_[num_bigits++] = n & ~bigit(0); @@ -1322,10 +470,12 @@ class bigint { exp_ = 0; } - int num_bigits() const { return static_cast(bigits_.size()) + exp_; } + FMT_CONSTEXPR20 int num_bigits() const { + return static_cast(bigits_.size()) + exp_; + } - FMT_NOINLINE bigint& operator<<=(int shift) { - assert(shift >= 0); + FMT_NOINLINE FMT_CONSTEXPR20 bigint& operator<<=(int shift) { + FMT_ASSERT(shift >= 0, ""); exp_ += shift / bigit_bits; shift %= bigit_bits; if (shift == 0) return *this; @@ -1339,13 +489,13 @@ class bigint { return *this; } - template bigint& operator*=(Int value) { + template FMT_CONSTEXPR20 bigint& operator*=(Int value) { FMT_ASSERT(value > 0, ""); multiply(uint32_or_64_or_128_t(value)); return *this; } - friend int compare(const bigint& lhs, const bigint& rhs) { + friend FMT_CONSTEXPR20 int compare(const bigint& lhs, const bigint& rhs) { int num_lhs_bigits = lhs.num_bigits(), num_rhs_bigits = rhs.num_bigits(); if (num_lhs_bigits != num_rhs_bigits) return num_lhs_bigits > num_rhs_bigits ? 1 : -1; @@ -1362,8 +512,8 @@ class bigint { } // Returns compare(lhs1 + lhs2, rhs). - friend int add_compare(const bigint& lhs1, const bigint& lhs2, - const bigint& rhs) { + friend FMT_CONSTEXPR20 int add_compare(const bigint& lhs1, const bigint& lhs2, + const bigint& rhs) { int max_lhs_bigits = (std::max)(lhs1.num_bigits(), lhs2.num_bigits()); int num_rhs_bigits = rhs.num_bigits(); if (max_lhs_bigits + 1 < num_rhs_bigits) return -1; @@ -1386,8 +536,8 @@ class bigint { } // Assigns pow(10, exp) to this bigint. - void assign_pow10(int exp) { - assert(exp >= 0); + FMT_CONSTEXPR20 void assign_pow10(int exp) { + FMT_ASSERT(exp >= 0, ""); if (exp == 0) return assign(1); // Find the top bit. int bitmask = 1; @@ -1405,10 +555,10 @@ class bigint { *this <<= exp; // Multiply by pow(2, exp) by shifting. } - void square() { - basic_memory_buffer n(std::move(bigits_)); + FMT_CONSTEXPR20 void square() { int num_bigits = static_cast(bigits_.size()); int num_result_bigits = 2 * num_bigits; + basic_memory_buffer n(std::move(bigits_)); bigits_.resize(to_unsigned(num_result_bigits)); using accumulator_t = conditional_t; auto sum = accumulator_t(); @@ -1430,14 +580,13 @@ class bigint { (*this)[bigit_index] = static_cast(sum); sum >>= bits::value; } - --num_result_bigits; remove_leading_zeros(); exp_ *= 2; } // If this bigint has a bigger exponent than other, adds trailing zero to make // exponents equal. This simplifies some operations such as subtraction. - void align(const bigint& other) { + FMT_CONSTEXPR20 void align(const bigint& other) { int exp_difference = exp_ - other.exp_; if (exp_difference <= 0) return; int num_bigits = static_cast(bigits_.size()); @@ -1450,7 +599,7 @@ class bigint { // Divides this bignum by divisor, assigning the remainder to this and // returning the quotient. - int divmod_assign(const bigint& divisor) { + FMT_CONSTEXPR20 int divmod_assign(const bigint& divisor) { FMT_ASSERT(this != &divisor, ""); if (compare(*this, divisor) < 0) return 0; FMT_ASSERT(divisor.bigits_[divisor.bigits_.size() - 1u] != 0, ""); @@ -1470,8 +619,9 @@ enum class round_direction { unknown, up, down }; // some number v and the error, returns whether v should be rounded up, down, or // whether the rounding direction can't be determined due to error. // error should be less than divisor / 2. -inline round_direction get_round_direction(uint64_t divisor, uint64_t remainder, - uint64_t error) { +FMT_CONSTEXPR inline round_direction get_round_direction(uint64_t divisor, + uint64_t remainder, + uint64_t error) { FMT_ASSERT(remainder < divisor, ""); // divisor - remainder won't overflow. FMT_ASSERT(error < divisor, ""); // divisor - error won't overflow. FMT_ASSERT(error < divisor - error, ""); // error * 2 won't overflow. @@ -1494,12 +644,52 @@ enum result { }; } +struct gen_digits_handler { + char* buf; + int size; + int precision; + int exp10; + bool fixed; + + FMT_CONSTEXPR digits::result on_digit(char digit, uint64_t divisor, + uint64_t remainder, uint64_t error, + bool integral) { + FMT_ASSERT(remainder < divisor, ""); + buf[size++] = digit; + if (!integral && error >= remainder) return digits::error; + if (size < precision) return digits::more; + if (!integral) { + // Check if error * 2 < divisor with overflow prevention. + // The check is not needed for the integral part because error = 1 + // and divisor > (1 << 32) there. + if (error >= divisor || error >= divisor - error) return digits::error; + } else { + FMT_ASSERT(error == 1 && divisor > 2, ""); + } + auto dir = get_round_direction(divisor, remainder, error); + if (dir != round_direction::up) + return dir == round_direction::down ? digits::done : digits::error; + ++buf[size - 1]; + for (int i = size - 1; i > 0 && buf[i] > '9'; --i) { + buf[i] = '0'; + ++buf[i - 1]; + } + if (buf[0] > '9') { + buf[0] = '1'; + if (fixed) + buf[size++] = '0'; + else + ++exp10; + } + return digits::done; + } +}; + // Generates output using the Grisu digit-gen algorithm. // error: the size of the region (lower, upper) outside of which numbers // definitely do not round to value (Delta in Grisu3). -template -FMT_ALWAYS_INLINE digits::result grisu_gen_digits(fp value, uint64_t error, - int& exp, Handler& handler) { +FMT_INLINE FMT_CONSTEXPR20 digits::result grisu_gen_digits( + fp value, uint64_t error, int& exp, gen_digits_handler& handler) { const fp one(1ULL << -value.e, value.e); // The integral part of scaled value (p1 in Grisu) = value / one. It cannot be // zero because it contains a product of two 64-bit numbers with MSB set (due @@ -1510,10 +700,28 @@ FMT_ALWAYS_INLINE digits::result grisu_gen_digits(fp value, uint64_t error, // The fractional part of scaled value (p2 in Grisu) c = value % one. uint64_t fractional = value.f & (one.f - 1); exp = count_digits(integral); // kappa in Grisu. - // Divide by 10 to prevent overflow. - auto result = handler.on_start(data::powers_of_10_64[exp - 1] << -one.e, - value.f / 10, error * 10, exp); - if (result != digits::more) return result; + // Non-fixed formats require at least one digit and no precision adjustment. + if (handler.fixed) { + // Adjust fixed precision by exponent because it is relative to decimal + // point. + int precision_offset = exp + handler.exp10; + if (precision_offset > 0 && + handler.precision > max_value() - precision_offset) { + FMT_THROW(format_error("number is too big")); + } + handler.precision += precision_offset; + // Check if precision is satisfied just by leading zeros, e.g. + // format("{:.2f}", 0.001) gives "0.00" without generating any digits. + if (handler.precision <= 0) { + if (handler.precision < 0) return digits::done; + // Divide by 10 to prevent overflow. + uint64_t divisor = impl_data::power_of_10_64[exp - 1] << -one.e; + auto dir = get_round_direction(divisor, value.f / 10, error * 10); + if (dir == round_direction::unknown) return digits::error; + handler.buf[handler.size++] = dir == round_direction::up ? '1' : '0'; + return digits::done; + } + } // Generate digits for the integral part. This can produce up to 10 digits. do { uint32_t digit = 0; @@ -1560,9 +768,9 @@ FMT_ALWAYS_INLINE digits::result grisu_gen_digits(fp value, uint64_t error, } --exp; auto remainder = (static_cast(integral) << -one.e) + fractional; - result = handler.on_digit(static_cast('0' + digit), - data::powers_of_10_64[exp] << -one.e, remainder, - error, exp, true); + auto result = handler.on_digit(static_cast('0' + digit), + impl_data::power_of_10_64[exp] << -one.e, + remainder, error, true); if (result != digits::more) return result; } while (exp > 0); // Generate digits for the fractional part. @@ -1572,74 +780,63 @@ FMT_ALWAYS_INLINE digits::result grisu_gen_digits(fp value, uint64_t error, char digit = static_cast('0' + (fractional >> -one.e)); fractional &= one.f - 1; --exp; - result = handler.on_digit(digit, one.f, fractional, error, exp, false); + auto result = handler.on_digit(digit, one.f, fractional, error, false); if (result != digits::more) return result; } } -// The fixed precision digit handler. -struct fixed_handler { - char* buf; - int size; - int precision; - int exp10; - bool fixed; +// A 128-bit integer type used internally, +struct uint128_wrapper { + uint128_wrapper() = default; - digits::result on_start(uint64_t divisor, uint64_t remainder, uint64_t error, - int& exp) { - // Non-fixed formats require at least one digit and no precision adjustment. - if (!fixed) return digits::more; - // Adjust fixed precision by exponent because it is relative to decimal - // point. - precision += exp + exp10; - // Check if precision is satisfied just by leading zeros, e.g. - // format("{:.2f}", 0.001) gives "0.00" without generating any digits. - if (precision > 0) return digits::more; - if (precision < 0) return digits::done; - auto dir = get_round_direction(divisor, remainder, error); - if (dir == round_direction::unknown) return digits::error; - buf[size++] = dir == round_direction::up ? '1' : '0'; - return digits::done; - } +#if FMT_USE_INT128 + uint128_t internal_; - digits::result on_digit(char digit, uint64_t divisor, uint64_t remainder, - uint64_t error, int, bool integral) { - FMT_ASSERT(remainder < divisor, ""); - buf[size++] = digit; - if (!integral && error >= remainder) return digits::error; - if (size < precision) return digits::more; - if (!integral) { - // Check if error * 2 < divisor with overflow prevention. - // The check is not needed for the integral part because error = 1 - // and divisor > (1 << 32) there. - if (error >= divisor || error >= divisor - error) return digits::error; - } else { - FMT_ASSERT(error == 1 && divisor > 2, ""); - } - auto dir = get_round_direction(divisor, remainder, error); - if (dir != round_direction::up) - return dir == round_direction::down ? digits::done : digits::error; - ++buf[size - 1]; - for (int i = size - 1; i > 0 && buf[i] > '9'; --i) { - buf[i] = '0'; - ++buf[i - 1]; - } - if (buf[0] > '9') { - buf[0] = '1'; - if (fixed) - buf[size++] = '0'; - else - ++exp10; - } - return digits::done; + constexpr uint128_wrapper(uint64_t high, uint64_t low) FMT_NOEXCEPT + : internal_{static_cast(low) | + (static_cast(high) << 64)} {} + + constexpr uint128_wrapper(uint128_t u) : internal_{u} {} + + constexpr uint64_t high() const FMT_NOEXCEPT { + return uint64_t(internal_ >> 64); } + constexpr uint64_t low() const FMT_NOEXCEPT { return uint64_t(internal_); } + + uint128_wrapper& operator+=(uint64_t n) FMT_NOEXCEPT { + internal_ += n; + return *this; + } +#else + uint64_t high_; + uint64_t low_; + + constexpr uint128_wrapper(uint64_t high, uint64_t low) FMT_NOEXCEPT + : high_{high}, + low_{low} {} + + constexpr uint64_t high() const FMT_NOEXCEPT { return high_; } + constexpr uint64_t low() const FMT_NOEXCEPT { return low_; } + + uint128_wrapper& operator+=(uint64_t n) FMT_NOEXCEPT { +# if defined(_MSC_VER) && defined(_M_X64) + unsigned char carry = _addcarry_u64(0, low_, n, &low_); + _addcarry_u64(carry, high_, 0, &high_); + return *this; +# else + uint64_t sum = low_ + n; + high_ += (sum < low_ ? 1 : 0); + low_ = sum; + return *this; +# endif + } +#endif }; // Implementation of Dragonbox algorithm: https://github.com/jk-jeon/dragonbox. namespace dragonbox { // Computes 128-bit result of multiplication of two 64-bit unsigned integers. -FMT_SAFEBUFFERS inline uint128_wrapper umul128(uint64_t x, - uint64_t y) FMT_NOEXCEPT { +inline uint128_wrapper umul128(uint64_t x, uint64_t y) FMT_NOEXCEPT { #if FMT_USE_INT128 return static_cast(x) * static_cast(y); #elif defined(_MSC_VER) && defined(_M_X64) @@ -1667,8 +864,7 @@ FMT_SAFEBUFFERS inline uint128_wrapper umul128(uint64_t x, } // Computes upper 64 bits of multiplication of two 64-bit unsigned integers. -FMT_SAFEBUFFERS inline uint64_t umul128_upper64(uint64_t x, - uint64_t y) FMT_NOEXCEPT { +inline uint64_t umul128_upper64(uint64_t x, uint64_t y) FMT_NOEXCEPT { #if FMT_USE_INT128 auto p = static_cast(x) * static_cast(y); return static_cast(p >> 64); @@ -1681,8 +877,7 @@ FMT_SAFEBUFFERS inline uint64_t umul128_upper64(uint64_t x, // Computes upper 64 bits of multiplication of a 64-bit unsigned integer and a // 128-bit unsigned integer. -FMT_SAFEBUFFERS inline uint64_t umul192_upper64(uint64_t x, uint128_wrapper y) - FMT_NOEXCEPT { +inline uint64_t umul192_upper64(uint64_t x, uint128_wrapper y) FMT_NOEXCEPT { uint128_wrapper g0 = umul128(x, y.high()); g0 += umul128_upper64(x, y.low()); return g0.high(); @@ -1696,8 +891,7 @@ inline uint32_t umul96_upper32(uint32_t x, uint64_t y) FMT_NOEXCEPT { // Computes middle 64 bits of multiplication of a 64-bit unsigned integer and a // 128-bit unsigned integer. -FMT_SAFEBUFFERS inline uint64_t umul192_middle64(uint64_t x, uint128_wrapper y) - FMT_NOEXCEPT { +inline uint64_t umul192_middle64(uint64_t x, uint128_wrapper y) FMT_NOEXCEPT { uint64_t g01 = x * y.high(); uint64_t g10 = umul128_upper64(x, y.low()); return g01 + g10; @@ -1714,8 +908,7 @@ inline uint64_t umul96_lower64(uint32_t x, uint64_t y) FMT_NOEXCEPT { inline int floor_log10_pow2(int e) FMT_NOEXCEPT { FMT_ASSERT(e <= 1700 && e >= -1700, "too large exponent"); const int shift = 22; - return (e * static_cast(data::log10_2_significand >> (64 - shift))) >> - shift; + return (e * static_cast(log10_2_significand >> (64 - shift))) >> shift; } // Various fast log computations. @@ -1733,8 +926,7 @@ inline int floor_log10_pow2_minus_log10_4_over_3(int e) FMT_NOEXCEPT { FMT_ASSERT(e <= 1700 && e >= -1700, "too large exponent"); const uint64_t log10_4_over_3_fractional_digits = 0x1ffbfc2bbc780375; const int shift_amount = 22; - return (e * static_cast(data::log10_2_significand >> - (64 - shift_amount)) - + return (e * static_cast(log10_2_significand >> (64 - shift_amount)) - static_cast(log10_4_over_3_fractional_digits >> (64 - shift_amount))) >> shift_amount; @@ -1756,20 +948,56 @@ inline bool divisible_by_power_of_2(uint64_t x, int exp) FMT_NOEXCEPT { #ifdef FMT_BUILTIN_CTZLL return FMT_BUILTIN_CTZLL(x) >= exp; #else - return exp < num_bits()) && x == ((x >> exp) << exp); + return exp < num_bits() && x == ((x >> exp) << exp); #endif } +// Table entry type for divisibility test. +template struct divtest_table_entry { + T mod_inv; + T max_quotient; +}; + // Returns true iff x is divisible by pow(5, exp). inline bool divisible_by_power_of_5(uint32_t x, int exp) FMT_NOEXCEPT { FMT_ASSERT(exp <= 10, "too large exponent"); - return x * data::divtest_table_for_pow5_32[exp].mod_inv <= - data::divtest_table_for_pow5_32[exp].max_quotient; + static constexpr const divtest_table_entry divtest_table[] = { + {0x00000001, 0xffffffff}, {0xcccccccd, 0x33333333}, + {0xc28f5c29, 0x0a3d70a3}, {0x26e978d5, 0x020c49ba}, + {0x3afb7e91, 0x0068db8b}, {0x0bcbe61d, 0x0014f8b5}, + {0x68c26139, 0x000431bd}, {0xae8d46a5, 0x0000d6bf}, + {0x22e90e21, 0x00002af3}, {0x3a2e9c6d, 0x00000897}, + {0x3ed61f49, 0x000001b7}}; + return x * divtest_table[exp].mod_inv <= divtest_table[exp].max_quotient; } inline bool divisible_by_power_of_5(uint64_t x, int exp) FMT_NOEXCEPT { FMT_ASSERT(exp <= 23, "too large exponent"); - return x * data::divtest_table_for_pow5_64[exp].mod_inv <= - data::divtest_table_for_pow5_64[exp].max_quotient; + static constexpr const divtest_table_entry divtest_table[] = { + {0x0000000000000001, 0xffffffffffffffff}, + {0xcccccccccccccccd, 0x3333333333333333}, + {0x8f5c28f5c28f5c29, 0x0a3d70a3d70a3d70}, + {0x1cac083126e978d5, 0x020c49ba5e353f7c}, + {0xd288ce703afb7e91, 0x0068db8bac710cb2}, + {0x5d4e8fb00bcbe61d, 0x0014f8b588e368f0}, + {0x790fb65668c26139, 0x000431bde82d7b63}, + {0xe5032477ae8d46a5, 0x0000d6bf94d5e57a}, + {0xc767074b22e90e21, 0x00002af31dc46118}, + {0x8e47ce423a2e9c6d, 0x0000089705f4136b}, + {0x4fa7f60d3ed61f49, 0x000001b7cdfd9d7b}, + {0x0fee64690c913975, 0x00000057f5ff85e5}, + {0x3662e0e1cf503eb1, 0x000000119799812d}, + {0xa47a2cf9f6433fbd, 0x0000000384b84d09}, + {0x54186f653140a659, 0x00000000b424dc35}, + {0x7738164770402145, 0x0000000024075f3d}, + {0xe4a4d1417cd9a041, 0x000000000734aca5}, + {0xc75429d9e5c5200d, 0x000000000170ef54}, + {0xc1773b91fac10669, 0x000000000049c977}, + {0x26b172506559ce15, 0x00000000000ec1e4}, + {0xd489e3a9addec2d1, 0x000000000002f394}, + {0x90e860bb892c8d5d, 0x000000000000971d}, + {0x502e79bf1b6f4f79, 0x0000000000001e39}, + {0xdcd618596be30fe5, 0x000000000000060b}}; + return x * divtest_table[exp].mod_inv <= divtest_table[exp].max_quotient; } // Replaces n by floor(n / pow(5, N)) returning true if and only if n is @@ -1823,7 +1051,34 @@ template <> struct cache_accessor { static uint64_t get_cached_power(int k) FMT_NOEXCEPT { FMT_ASSERT(k >= float_info::min_k && k <= float_info::max_k, "k is out of range"); - return data::dragonbox_pow10_significands_64[k - float_info::min_k]; + static constexpr const uint64_t pow10_significands[] = { + 0x81ceb32c4b43fcf5, 0xa2425ff75e14fc32, 0xcad2f7f5359a3b3f, + 0xfd87b5f28300ca0e, 0x9e74d1b791e07e49, 0xc612062576589ddb, + 0xf79687aed3eec552, 0x9abe14cd44753b53, 0xc16d9a0095928a28, + 0xf1c90080baf72cb2, 0x971da05074da7bef, 0xbce5086492111aeb, + 0xec1e4a7db69561a6, 0x9392ee8e921d5d08, 0xb877aa3236a4b44a, + 0xe69594bec44de15c, 0x901d7cf73ab0acda, 0xb424dc35095cd810, + 0xe12e13424bb40e14, 0x8cbccc096f5088cc, 0xafebff0bcb24aaff, + 0xdbe6fecebdedd5bf, 0x89705f4136b4a598, 0xabcc77118461cefd, + 0xd6bf94d5e57a42bd, 0x8637bd05af6c69b6, 0xa7c5ac471b478424, + 0xd1b71758e219652c, 0x83126e978d4fdf3c, 0xa3d70a3d70a3d70b, + 0xcccccccccccccccd, 0x8000000000000000, 0xa000000000000000, + 0xc800000000000000, 0xfa00000000000000, 0x9c40000000000000, + 0xc350000000000000, 0xf424000000000000, 0x9896800000000000, + 0xbebc200000000000, 0xee6b280000000000, 0x9502f90000000000, + 0xba43b74000000000, 0xe8d4a51000000000, 0x9184e72a00000000, + 0xb5e620f480000000, 0xe35fa931a0000000, 0x8e1bc9bf04000000, + 0xb1a2bc2ec5000000, 0xde0b6b3a76400000, 0x8ac7230489e80000, + 0xad78ebc5ac620000, 0xd8d726b7177a8000, 0x878678326eac9000, + 0xa968163f0a57b400, 0xd3c21bcecceda100, 0x84595161401484a0, + 0xa56fa5b99019a5c8, 0xcecb8f27f4200f3a, 0x813f3978f8940984, + 0xa18f07d736b90be5, 0xc9f2c9cd04674ede, 0xfc6f7c4045812296, + 0x9dc5ada82b70b59d, 0xc5371912364ce305, 0xf684df56c3e01bc6, + 0x9a130b963a6c115c, 0xc097ce7bc90715b3, 0xf0bdc21abb48db20, + 0x96769950b50d88f4, 0xbc143fa4e250eb31, 0xeb194f8e1ae525fd, + 0x92efd1b8d0cf37be, 0xb7abc627050305ad, 0xe596b7b0c643c719, + 0x8f7e32ce7bea5c6f, 0xb35dbf821ae4f38b, 0xe0352f62a19e306e}; + return pow10_significands[k - float_info::min_k]; } static carrier_uint compute_mul(carrier_uint u, @@ -1877,10 +1132,679 @@ template <> struct cache_accessor { FMT_ASSERT(k >= float_info::min_k && k <= float_info::max_k, "k is out of range"); + static constexpr const uint128_wrapper pow10_significands[] = { #if FMT_USE_FULL_CACHE_DRAGONBOX - return data::dragonbox_pow10_significands_128[k - - float_info::min_k]; + {0xff77b1fcbebcdc4f, 0x25e8e89c13bb0f7b}, + {0x9faacf3df73609b1, 0x77b191618c54e9ad}, + {0xc795830d75038c1d, 0xd59df5b9ef6a2418}, + {0xf97ae3d0d2446f25, 0x4b0573286b44ad1e}, + {0x9becce62836ac577, 0x4ee367f9430aec33}, + {0xc2e801fb244576d5, 0x229c41f793cda740}, + {0xf3a20279ed56d48a, 0x6b43527578c11110}, + {0x9845418c345644d6, 0x830a13896b78aaaa}, + {0xbe5691ef416bd60c, 0x23cc986bc656d554}, + {0xedec366b11c6cb8f, 0x2cbfbe86b7ec8aa9}, + {0x94b3a202eb1c3f39, 0x7bf7d71432f3d6aa}, + {0xb9e08a83a5e34f07, 0xdaf5ccd93fb0cc54}, + {0xe858ad248f5c22c9, 0xd1b3400f8f9cff69}, + {0x91376c36d99995be, 0x23100809b9c21fa2}, + {0xb58547448ffffb2d, 0xabd40a0c2832a78b}, + {0xe2e69915b3fff9f9, 0x16c90c8f323f516d}, + {0x8dd01fad907ffc3b, 0xae3da7d97f6792e4}, + {0xb1442798f49ffb4a, 0x99cd11cfdf41779d}, + {0xdd95317f31c7fa1d, 0x40405643d711d584}, + {0x8a7d3eef7f1cfc52, 0x482835ea666b2573}, + {0xad1c8eab5ee43b66, 0xda3243650005eed0}, + {0xd863b256369d4a40, 0x90bed43e40076a83}, + {0x873e4f75e2224e68, 0x5a7744a6e804a292}, + {0xa90de3535aaae202, 0x711515d0a205cb37}, + {0xd3515c2831559a83, 0x0d5a5b44ca873e04}, + {0x8412d9991ed58091, 0xe858790afe9486c3}, + {0xa5178fff668ae0b6, 0x626e974dbe39a873}, + {0xce5d73ff402d98e3, 0xfb0a3d212dc81290}, + {0x80fa687f881c7f8e, 0x7ce66634bc9d0b9a}, + {0xa139029f6a239f72, 0x1c1fffc1ebc44e81}, + {0xc987434744ac874e, 0xa327ffb266b56221}, + {0xfbe9141915d7a922, 0x4bf1ff9f0062baa9}, + {0x9d71ac8fada6c9b5, 0x6f773fc3603db4aa}, + {0xc4ce17b399107c22, 0xcb550fb4384d21d4}, + {0xf6019da07f549b2b, 0x7e2a53a146606a49}, + {0x99c102844f94e0fb, 0x2eda7444cbfc426e}, + {0xc0314325637a1939, 0xfa911155fefb5309}, + {0xf03d93eebc589f88, 0x793555ab7eba27cb}, + {0x96267c7535b763b5, 0x4bc1558b2f3458df}, + {0xbbb01b9283253ca2, 0x9eb1aaedfb016f17}, + {0xea9c227723ee8bcb, 0x465e15a979c1cadd}, + {0x92a1958a7675175f, 0x0bfacd89ec191eca}, + {0xb749faed14125d36, 0xcef980ec671f667c}, + {0xe51c79a85916f484, 0x82b7e12780e7401b}, + {0x8f31cc0937ae58d2, 0xd1b2ecb8b0908811}, + {0xb2fe3f0b8599ef07, 0x861fa7e6dcb4aa16}, + {0xdfbdcece67006ac9, 0x67a791e093e1d49b}, + {0x8bd6a141006042bd, 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0xb14f98f6f0feb951}, + {0x9c935e00d4b9d8d2, 0x6ed1bf9a569f33d3}, + {0xc3b8358109e84f07, 0x0a862f80ec4700c8}, + {0xf4a642e14c6262c8, 0xcd27bb612758c0fa}, + {0x98e7e9cccfbd7dbd, 0x8038d51cb897789c}, + {0xbf21e44003acdd2c, 0xe0470a63e6bd56c3}, + {0xeeea5d5004981478, 0x1858ccfce06cac74}, + {0x95527a5202df0ccb, 0x0f37801e0c43ebc8}, + {0xbaa718e68396cffd, 0xd30560258f54e6ba}, + {0xe950df20247c83fd, 0x47c6b82ef32a2069}, + {0x91d28b7416cdd27e, 0x4cdc331d57fa5441}, + {0xb6472e511c81471d, 0xe0133fe4adf8e952}, + {0xe3d8f9e563a198e5, 0x58180fddd97723a6}, + {0x8e679c2f5e44ff8f, 0x570f09eaa7ea7648}, + {0xb201833b35d63f73, 0x2cd2cc6551e513da}, + {0xde81e40a034bcf4f, 0xf8077f7ea65e58d1}, + {0x8b112e86420f6191, 0xfb04afaf27faf782}, + {0xadd57a27d29339f6, 0x79c5db9af1f9b563}, + {0xd94ad8b1c7380874, 0x18375281ae7822bc}, + {0x87cec76f1c830548, 0x8f2293910d0b15b5}, + {0xa9c2794ae3a3c69a, 0xb2eb3875504ddb22}, + {0xd433179d9c8cb841, 0x5fa60692a46151eb}, + {0x849feec281d7f328, 0xdbc7c41ba6bcd333}, + {0xa5c7ea73224deff3, 0x12b9b522906c0800}, + {0xcf39e50feae16bef, 0xd768226b34870a00}, + {0x81842f29f2cce375, 0xe6a1158300d46640}, + {0xa1e53af46f801c53, 0x60495ae3c1097fd0}, + {0xca5e89b18b602368, 0x385bb19cb14bdfc4}, + {0xfcf62c1dee382c42, 0x46729e03dd9ed7b5}, + {0x9e19db92b4e31ba9, 0x6c07a2c26a8346d1}, + {0xc5a05277621be293, 0xc7098b7305241885}, + { 0xf70867153aa2db38, + 0xb8cbee4fc66d1ea7 } #else + {0xff77b1fcbebcdc4f, 0x25e8e89c13bb0f7b}, + {0xce5d73ff402d98e3, 0xfb0a3d212dc81290}, + {0xa6b34ad8c9dfc06f, 0xf42faa48c0ea481f}, + {0x86a8d39ef77164bc, 0xae5dff9c02033198}, + {0xd98ddaee19068c76, 0x3badd624dd9b0958}, + {0xafbd2350644eeacf, 0xe5d1929ef90898fb}, + {0x8df5efabc5979c8f, 0xca8d3ffa1ef463c2}, + {0xe55990879ddcaabd, 0xcc420a6a101d0516}, + {0xb94470938fa89bce, 0xf808e40e8d5b3e6a}, + {0x95a8637627989aad, 0xdde7001379a44aa9}, + {0xf1c90080baf72cb1, 0x5324c68b12dd6339}, + {0xc350000000000000, 0x0000000000000000}, + {0x9dc5ada82b70b59d, 0xf020000000000000}, + {0xfee50b7025c36a08, 0x02f236d04753d5b4}, + {0xcde6fd5e09abcf26, 0xed4c0226b55e6f86}, + {0xa6539930bf6bff45, 0x84db8346b786151c}, + {0x865b86925b9bc5c2, 0x0b8a2392ba45a9b2}, + {0xd910f7ff28069da4, 0x1b2ba1518094da04}, + {0xaf58416654a6babb, 0x387ac8d1970027b2}, + {0x8da471a9de737e24, 0x5ceaecfed289e5d2}, + {0xe4d5e82392a40515, 0x0fabaf3feaa5334a}, + {0xb8da1662e7b00a17, 0x3d6a751f3b936243}, + { 0x95527a5202df0ccb, + 0x0f37801e0c43ebc8 } +#endif + }; + +#if FMT_USE_FULL_CACHE_DRAGONBOX + return pow10_significands[k - float_info::min_k]; +#else + static constexpr const uint64_t powers_of_5_64[] = { + 0x0000000000000001, 0x0000000000000005, 0x0000000000000019, + 0x000000000000007d, 0x0000000000000271, 0x0000000000000c35, + 0x0000000000003d09, 0x000000000001312d, 0x000000000005f5e1, + 0x00000000001dcd65, 0x00000000009502f9, 0x0000000002e90edd, + 0x000000000e8d4a51, 0x0000000048c27395, 0x000000016bcc41e9, + 0x000000071afd498d, 0x0000002386f26fc1, 0x000000b1a2bc2ec5, + 0x000003782dace9d9, 0x00001158e460913d, 0x000056bc75e2d631, + 0x0001b1ae4d6e2ef5, 0x000878678326eac9, 0x002a5a058fc295ed, + 0x00d3c21bcecceda1, 0x0422ca8b0a00a425, 0x14adf4b7320334b9}; + + static constexpr const uint32_t pow10_recovery_errors[] = { + 0x50001400, 0x54044100, 0x54014555, 0x55954415, 0x54115555, 0x00000001, + 0x50000000, 0x00104000, 0x54010004, 0x05004001, 0x55555544, 0x41545555, + 0x54040551, 0x15445545, 0x51555514, 0x10000015, 0x00101100, 0x01100015, + 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x04450514, 0x45414110, + 0x55555145, 0x50544050, 0x15040155, 0x11054140, 0x50111514, 0x11451454, + 0x00400541, 0x00000000, 0x55555450, 0x10056551, 0x10054011, 0x55551014, + 0x69514555, 0x05151109, 0x00155555}; + static const int compression_ratio = 27; // Compute base index. @@ -1889,8 +1813,7 @@ template <> struct cache_accessor { int offset = k - kb; // Get base cache. - uint128_wrapper base_cache = - data::dragonbox_pow10_significands_128[cache_index]; + uint128_wrapper base_cache = pow10_significands[cache_index]; if (offset == 0) return base_cache; // Compute the required amount of bit-shift. @@ -1898,10 +1821,10 @@ template <> struct cache_accessor { FMT_ASSERT(alpha > 0 && alpha < 64, "shifting error detected"); // Try to recover the real cache. - uint64_t pow5 = data::powers_of_5_64[offset]; + uint64_t pow5 = powers_of_5_64[offset]; uint128_wrapper recovered_cache = umul128(base_cache.high(), pow5); uint128_wrapper middle_low = - umul128(base_cache.low() - (kb < 0 ? 1 : 0), pow5); + umul128(base_cache.low() - (kb < 0 ? 1u : 0u), pow5); recovered_cache += middle_low.high(); @@ -1916,7 +1839,7 @@ template <> struct cache_accessor { // Get error. int error_idx = (k - float_info::min_k) / 16; - uint32_t error = (data::dragonbox_pow10_recovery_errors[error_idx] >> + uint32_t error = (pow10_recovery_errors[error_idx] >> ((k - float_info::min_k) % 16) * 2) & 0x3; @@ -2002,7 +1925,7 @@ bool is_center_integer(typename float_info::carrier_uint two_f, int exponent, } // Remove trailing zeros from n and return the number of zeros removed (float) -FMT_ALWAYS_INLINE int remove_trailing_zeros(uint32_t& n) FMT_NOEXCEPT { +FMT_INLINE int remove_trailing_zeros(uint32_t& n) FMT_NOEXCEPT { #ifdef FMT_BUILTIN_CTZ int t = FMT_BUILTIN_CTZ(n); #else @@ -2030,7 +1953,7 @@ FMT_ALWAYS_INLINE int remove_trailing_zeros(uint32_t& n) FMT_NOEXCEPT { } // Removes trailing zeros and returns the number of zeros removed (double) -FMT_ALWAYS_INLINE int remove_trailing_zeros(uint64_t& n) FMT_NOEXCEPT { +FMT_INLINE int remove_trailing_zeros(uint64_t& n) FMT_NOEXCEPT { #ifdef FMT_BUILTIN_CTZLL int t = FMT_BUILTIN_CTZLL(n); #else @@ -2116,8 +2039,7 @@ FMT_ALWAYS_INLINE int remove_trailing_zeros(uint64_t& n) FMT_NOEXCEPT { // The main algorithm for shorter interval case template -FMT_ALWAYS_INLINE FMT_SAFEBUFFERS decimal_fp shorter_interval_case( - int exponent) FMT_NOEXCEPT { +FMT_INLINE decimal_fp shorter_interval_case(int exponent) FMT_NOEXCEPT { decimal_fp ret_value; // Compute k and beta const int minus_k = floor_log10_pow2_minus_log10_4_over_3(exponent); @@ -2163,8 +2085,7 @@ FMT_ALWAYS_INLINE FMT_SAFEBUFFERS decimal_fp shorter_interval_case( return ret_value; } -template -FMT_SAFEBUFFERS decimal_fp to_decimal(T x) FMT_NOEXCEPT { +template decimal_fp to_decimal(T x) FMT_NOEXCEPT { // Step 1: integer promotion & Schubfach multiplier calculation. using carrier_uint = typename float_info::carrier_uint; @@ -2298,24 +2219,21 @@ small_divisor_case_label: } } // namespace dragonbox -// Formats value using a variation of the Fixed-Precision Positive -// Floating-Point Printout ((FPP)^2) algorithm by Steele & White: -// https://fmt.dev/p372-steele.pdf. -template -void fallback_format(Double d, int num_digits, bool binary32, buffer& buf, - int& exp10) { +// Formats a floating-point number using a variation of the Fixed-Precision +// Positive Floating-Point Printout ((FPP)^2) algorithm by Steele & White: +// https://fmt.dev/papers/p372-steele.pdf. +FMT_CONSTEXPR20 inline void format_dragon(fp value, bool is_predecessor_closer, + int num_digits, buffer& buf, + int& exp10) { bigint numerator; // 2 * R in (FPP)^2. bigint denominator; // 2 * S in (FPP)^2. // lower and upper are differences between value and corresponding boundaries. bigint lower; // (M^- in (FPP)^2). bigint upper_store; // upper's value if different from lower. bigint* upper = nullptr; // (M^+ in (FPP)^2). - fp value; // Shift numerator and denominator by an extra bit or two (if lower boundary // is closer) to make lower and upper integers. This eliminates multiplication // by 2 during later computations. - const bool is_predecessor_closer = - binary32 ? value.assign(static_cast(d)) : value.assign(d); int shift = is_predecessor_closer ? 2 : 1; uint64_t significand = value.f << shift; if (value.e >= 0) { @@ -2329,7 +2247,7 @@ void fallback_format(Double d, int num_digits, bool binary32, buffer& buf, upper = &upper_store; } denominator.assign_pow10(exp10); - denominator <<= 1; + denominator <<= shift; } else if (exp10 < 0) { numerator.assign_pow10(-exp10); lower.assign(numerator); @@ -2385,9 +2303,9 @@ void fallback_format(Double d, int num_digits, bool binary32, buffer& buf, // Generate the given number of digits. exp10 -= num_digits - 1; if (num_digits == 0) { - buf.try_resize(1); denominator *= 10; - buf[0] = add_compare(numerator, numerator, denominator) > 0 ? '1' : '0'; + auto digit = add_compare(numerator, numerator, denominator) > 0 ? '1' : '0'; + buf.push_back(digit); return; } buf.try_resize(to_unsigned(num_digits)); @@ -2418,9 +2336,12 @@ void fallback_format(Double d, int num_digits, bool binary32, buffer& buf, buf[num_digits - 1] = static_cast('0' + digit); } -template -int format_float(T value, int precision, float_specs specs, buffer& buf) { - static_assert(!std::is_same::value, ""); +template +FMT_HEADER_ONLY_CONSTEXPR20 int format_float(Float value, int precision, + float_specs specs, + buffer& buf) { + // float is passed as double to reduce the number of instantiations. + static_assert(!std::is_same::value, ""); FMT_ASSERT(value >= 0, "value is negative"); const bool fixed = specs.format == float_format::fixed; @@ -2430,13 +2351,13 @@ int format_float(T value, int precision, float_specs specs, buffer& buf) { return 0; } buf.try_resize(to_unsigned(precision)); - std::uninitialized_fill_n(buf.data(), precision, '0'); + fill_n(buf.data(), precision, '0'); return -precision; } - if (!specs.use_grisu) return snprintf_float(value, precision, specs, buf); + if (specs.fallback) return snprintf_float(value, precision, specs, buf); - if (precision < 0) { + if (!is_constant_evaluated() && precision < 0) { // Use Dragonbox for the shortest format. if (specs.binary32) { auto dec = dragonbox::to_decimal(static_cast(value)); @@ -2448,26 +2369,37 @@ int format_float(T value, int precision, float_specs specs, buffer& buf) { return dec.exponent; } - // Use Grisu + Dragon4 for the given precision: - // https://www.cs.tufts.edu/~nr/cs257/archive/florian-loitsch/printf.pdf. int exp = 0; - const int min_exp = -60; // alpha in Grisu. - int cached_exp10 = 0; // K in Grisu. - fp normalized = normalize(fp(value)); - const auto cached_pow = get_cached_power( - min_exp - (normalized.e + fp::significand_size), cached_exp10); - normalized = normalized * cached_pow; - // Limit precision to the maximum possible number of significant digits in an - // IEEE754 double because we don't need to generate zeros. - const int max_double_digits = 767; - if (precision > max_double_digits) precision = max_double_digits; - fixed_handler handler{buf.data(), 0, precision, -cached_exp10, fixed}; - if (grisu_gen_digits(normalized, 1, exp, handler) == digits::error) { - exp += handler.size - cached_exp10 - 1; - fallback_format(value, handler.precision, specs.binary32, buf, exp); - } else { - exp += handler.exp10; - buf.try_resize(to_unsigned(handler.size)); + bool use_dragon = true; + if (is_fast_float()) { + // Use Grisu + Dragon4 for the given precision: + // https://www.cs.tufts.edu/~nr/cs257/archive/florian-loitsch/printf.pdf. + const int min_exp = -60; // alpha in Grisu. + int cached_exp10 = 0; // K in Grisu. + fp normalized = normalize(fp(value)); + const auto cached_pow = get_cached_power( + min_exp - (normalized.e + fp::num_significand_bits), cached_exp10); + normalized = normalized * cached_pow; + gen_digits_handler handler{buf.data(), 0, precision, -cached_exp10, fixed}; + if (grisu_gen_digits(normalized, 1, exp, handler) != digits::error && + !is_constant_evaluated()) { + exp += handler.exp10; + buf.try_resize(to_unsigned(handler.size)); + use_dragon = false; + } else { + exp += handler.size - cached_exp10 - 1; + precision = handler.precision; + } + } + if (use_dragon) { + auto f = fp(); + bool is_predecessor_closer = + specs.binary32 ? f.assign(static_cast(value)) : f.assign(value); + // Limit precision to the maximum possible number of significant digits in + // an IEEE754 double because we don't need to generate zeros. + const int max_double_digits = 767; + if (precision > max_double_digits) precision = max_double_digits; + format_dragon(f, is_predecessor_closer, precision, buf, exp); } if (!fixed && !specs.showpoint) { // Remove trailing zeros. @@ -2479,7 +2411,7 @@ int format_float(T value, int precision, float_specs specs, buffer& buf) { buf.try_resize(num_digits); } return exp; -} // namespace detail +} template int snprintf_float(T value, int precision, float_specs specs, @@ -2563,11 +2495,11 @@ int snprintf_float(T value, int precision, float_specs specs, --exp_pos; } while (*exp_pos != 'e'); char sign = exp_pos[1]; - assert(sign == '+' || sign == '-'); + FMT_ASSERT(sign == '+' || sign == '-', ""); int exp = 0; auto p = exp_pos + 2; // Skip 'e' and sign. do { - assert(is_digit(*p)); + FMT_ASSERT(is_digit(*p), ""); exp = exp * 10 + (*p++ - '0'); } while (p != end); if (sign == '-') exp = -exp; @@ -2584,71 +2516,11 @@ int snprintf_float(T value, int precision, float_specs specs, return exp - fraction_size; } } - -// A public domain branchless UTF-8 decoder by Christopher Wellons: -// https://github.com/skeeto/branchless-utf8 -/* Decode the next character, c, from buf, reporting errors in e. - * - * Since this is a branchless decoder, four bytes will be read from the - * buffer regardless of the actual length of the next character. This - * means the buffer _must_ have at least three bytes of zero padding - * following the end of the data stream. - * - * Errors are reported in e, which will be non-zero if the parsed - * character was somehow invalid: invalid byte sequence, non-canonical - * encoding, or a surrogate half. - * - * The function returns a pointer to the next character. When an error - * occurs, this pointer will be a guess that depends on the particular - * error, but it will always advance at least one byte. - */ -inline const char* utf8_decode(const char* buf, uint32_t* c, int* e) { - static const int masks[] = {0x00, 0x7f, 0x1f, 0x0f, 0x07}; - static const uint32_t mins[] = {4194304, 0, 128, 2048, 65536}; - static const int shiftc[] = {0, 18, 12, 6, 0}; - static const int shifte[] = {0, 6, 4, 2, 0}; - - int len = code_point_length(buf); - const char* next = buf + len; - - // Assume a four-byte character and load four bytes. Unused bits are - // shifted out. - auto s = reinterpret_cast(buf); - *c = uint32_t(s[0] & masks[len]) << 18; - *c |= uint32_t(s[1] & 0x3f) << 12; - *c |= uint32_t(s[2] & 0x3f) << 6; - *c |= uint32_t(s[3] & 0x3f) << 0; - *c >>= shiftc[len]; - - // Accumulate the various error conditions. - *e = (*c < mins[len]) << 6; // non-canonical encoding - *e |= ((*c >> 11) == 0x1b) << 7; // surrogate half? - *e |= (*c > 0x10FFFF) << 8; // out of range? - *e |= (s[1] & 0xc0) >> 2; - *e |= (s[2] & 0xc0) >> 4; - *e |= (s[3]) >> 6; - *e ^= 0x2a; // top two bits of each tail byte correct? - *e >>= shifte[len]; - - return next; -} - -struct stringifier { - template FMT_INLINE std::string operator()(T value) const { - return to_string(value); - } - std::string operator()(basic_format_arg::handle h) const { - memory_buffer buf; - format_parse_context parse_ctx({}); - format_context format_ctx(buffer_appender(buf), {}, {}); - h.format(parse_ctx, format_ctx); - return to_string(buf); - } -}; } // namespace detail template <> struct formatter { - format_parse_context::iterator parse(format_parse_context& ctx) { + FMT_CONSTEXPR format_parse_context::iterator parse( + format_parse_context& ctx) { return ctx.begin(); } @@ -2659,24 +2531,22 @@ template <> struct formatter { for (auto i = n.bigits_.size(); i > 0; --i) { auto value = n.bigits_[i - 1u]; if (first) { - out = format_to(out, "{:x}", value); + out = format_to(out, FMT_STRING("{:x}"), value); first = false; continue; } - out = format_to(out, "{:08x}", value); + out = format_to(out, FMT_STRING("{:08x}"), value); } if (n.exp_ > 0) - out = format_to(out, "p{}", n.exp_ * detail::bigint::bigit_bits); + out = format_to(out, FMT_STRING("p{}"), + n.exp_ * detail::bigint::bigit_bits); return out; } }; FMT_FUNC detail::utf8_to_utf16::utf8_to_utf16(string_view s) { - auto transcode = [this](const char* p) { - auto cp = uint32_t(); - auto error = 0; - p = utf8_decode(p, &cp, &error); - if (error != 0) FMT_THROW(std::runtime_error("invalid utf8")); + for_each_codepoint(s, [this](uint32_t cp, string_view) { + if (cp == invalid_code_point) FMT_THROW(std::runtime_error("invalid utf8")); if (cp <= 0xFFFF) { buffer_.push_back(static_cast(cp)); } else { @@ -2684,64 +2554,38 @@ FMT_FUNC detail::utf8_to_utf16::utf8_to_utf16(string_view s) { buffer_.push_back(static_cast(0xD800 + (cp >> 10))); buffer_.push_back(static_cast(0xDC00 + (cp & 0x3FF))); } - return p; - }; - auto p = s.data(); - const size_t block_size = 4; // utf8_decode always reads blocks of 4 chars. - if (s.size() >= block_size) { - for (auto end = p + s.size() - block_size + 1; p < end;) p = transcode(p); - } - if (auto num_chars_left = s.data() + s.size() - p) { - char buf[2 * block_size - 1] = {}; - memcpy(buf, p, to_unsigned(num_chars_left)); - p = buf; - do { - p = transcode(p); - } while (p - buf < num_chars_left); - } + return true; + }); buffer_.push_back(0); } FMT_FUNC void format_system_error(detail::buffer& out, int error_code, - string_view message) FMT_NOEXCEPT { + const char* message) FMT_NOEXCEPT { FMT_TRY { - memory_buffer buf; - buf.resize(inline_buffer_size); - for (;;) { - char* system_message = &buf[0]; - int result = - detail::safe_strerror(error_code, system_message, buf.size()); - if (result == 0) { - format_to(detail::buffer_appender(out), "{}: {}", message, - system_message); - return; - } - if (result != ERANGE) - break; // Can't get error message, report error code instead. - buf.resize(buf.size() * 2); - } + auto ec = std::error_code(error_code, std::generic_category()); + write(std::back_inserter(out), std::system_error(ec, message).what()); + return; } FMT_CATCH(...) {} format_error_code(out, error_code, message); } -FMT_FUNC void detail::error_handler::on_error(const char* message) { - FMT_THROW(format_error(message)); -} - FMT_FUNC void report_system_error(int error_code, - fmt::string_view message) FMT_NOEXCEPT { + const char* message) FMT_NOEXCEPT { report_error(format_system_error, error_code, message); } -FMT_FUNC std::string detail::vformat(string_view format_str, format_args args) { - if (format_str.size() == 2 && equal2(format_str.data(), "{}")) { - auto arg = args.get(0); - if (!arg) error_handler().on_error("argument not found"); - return visit_format_arg(stringifier(), arg); - } - memory_buffer buffer; - detail::vformat_to(buffer, format_str, args); +// DEPRECATED! +// This function is defined here and not inline for ABI compatiblity. +FMT_FUNC void detail::error_handler::on_error(const char* message) { + throw_format_error(message); +} + +FMT_FUNC std::string vformat(string_view fmt, format_args args) { + // Don't optimize the "{}" case to keep the binary size small and because it + // can be better optimized in fmt::format anyway. + auto buffer = memory_buffer(); + detail::vformat_to(buffer, fmt, args); return to_string(buffer); } @@ -2753,24 +2597,30 @@ extern "C" __declspec(dllimport) int __stdcall WriteConsoleW( // } // namespace detail #endif -FMT_FUNC void vprint(std::FILE* f, string_view format_str, format_args args) { - memory_buffer buffer; - detail::vformat_to(buffer, format_str, - basic_format_args>(args)); +namespace detail { +FMT_FUNC void print(std::FILE* f, string_view text) { #ifdef _WIN32 auto fd = _fileno(f); if (_isatty(fd)) { - detail::utf8_to_utf16 u16(string_view(buffer.data(), buffer.size())); + detail::utf8_to_utf16 u16(string_view(text.data(), text.size())); auto written = detail::dword(); - if (!detail::WriteConsoleW(reinterpret_cast(_get_osfhandle(fd)), - u16.c_str(), static_cast(u16.size()), - &written, nullptr)) { - FMT_THROW(format_error("failed to write to console")); + if (detail::WriteConsoleW(reinterpret_cast(_get_osfhandle(fd)), + u16.c_str(), static_cast(u16.size()), + &written, nullptr)) { + return; } - return; + // Fallback to fwrite on failure. It can happen if the output has been + // redirected to NUL. } #endif - detail::fwrite_fully(buffer.data(), 1, buffer.size(), f); + detail::fwrite_fully(text.data(), 1, text.size(), f); +} +} // namespace detail + +FMT_FUNC void vprint(std::FILE* f, string_view format_str, format_args args) { + memory_buffer buffer; + detail::vformat_to(buffer, format_str, args); + detail::print(f, {buffer.data(), buffer.size()}); } #ifdef _WIN32 diff --git a/Externals/fmt/include/fmt/format.h b/Externals/fmt/include/fmt/format.h index ad039c35e2..ee69651ca5 100755 --- a/Externals/fmt/include/fmt/format.h +++ b/Externals/fmt/include/fmt/format.h @@ -33,22 +33,24 @@ #ifndef FMT_FORMAT_H_ #define FMT_FORMAT_H_ -#include -#include -#include -#include -#include -#include -#include +#include // std::signbit +#include // uint32_t +#include // std::numeric_limits +#include // std::uninitialized_copy +#include // std::runtime_error +#include // std::system_error +#include // std::swap + +#ifdef __cpp_lib_bit_cast +# include // std::bitcast +#endif #include "core.h" -#ifdef __INTEL_COMPILER -# define FMT_ICC_VERSION __INTEL_COMPILER -#elif defined(__ICL) -# define FMT_ICC_VERSION __ICL +#if FMT_GCC_VERSION +# define FMT_GCC_VISIBILITY_HIDDEN __attribute__((visibility("hidden"))) #else -# define FMT_ICC_VERSION 0 +# define FMT_GCC_VISIBILITY_HIDDEN #endif #ifdef __NVCC__ @@ -69,30 +71,10 @@ # define FMT_NOINLINE #endif -#if __cplusplus == 201103L || __cplusplus == 201402L -# if defined(__INTEL_COMPILER) || defined(__PGI) -# define FMT_FALLTHROUGH -# elif defined(__clang__) -# define FMT_FALLTHROUGH [[clang::fallthrough]] -# elif FMT_GCC_VERSION >= 700 && \ - (!defined(__EDG_VERSION__) || __EDG_VERSION__ >= 520) -# define FMT_FALLTHROUGH [[gnu::fallthrough]] -# else -# define FMT_FALLTHROUGH -# endif -#elif FMT_HAS_CPP17_ATTRIBUTE(fallthrough) || \ - (defined(_MSVC_LANG) && _MSVC_LANG >= 201703L) -# define FMT_FALLTHROUGH [[fallthrough]] +#if FMT_MSC_VER +# define FMT_MSC_DEFAULT = default #else -# define FMT_FALLTHROUGH -#endif - -#ifndef FMT_MAYBE_UNUSED -# if FMT_HAS_CPP17_ATTRIBUTE(maybe_unused) -# define FMT_MAYBE_UNUSED [[maybe_unused]] -# else -# define FMT_MAYBE_UNUSED -# endif +# define FMT_MSC_DEFAULT #endif #ifndef FMT_THROW @@ -113,10 +95,9 @@ FMT_END_NAMESPACE # define FMT_THROW(x) throw x # endif # else -# define FMT_THROW(x) \ - do { \ - static_cast(sizeof(x)); \ - FMT_ASSERT(false, ""); \ +# define FMT_THROW(x) \ + do { \ + FMT_ASSERT(false, (x).what()); \ } while (false) # endif #endif @@ -129,6 +110,21 @@ FMT_END_NAMESPACE # define FMT_CATCH(x) if (false) #endif +#ifndef FMT_MAYBE_UNUSED +# if FMT_HAS_CPP17_ATTRIBUTE(maybe_unused) +# define FMT_MAYBE_UNUSED [[maybe_unused]] +# else +# define FMT_MAYBE_UNUSED +# endif +#endif + +// Workaround broken [[deprecated]] in the Intel, PGI and NVCC compilers. +#if FMT_ICC_VERSION || defined(__PGI) || FMT_NVCC +# define FMT_DEPRECATED_ALIAS +#else +# define FMT_DEPRECATED_ALIAS FMT_DEPRECATED +#endif + #ifndef FMT_USE_USER_DEFINED_LITERALS // EDG based compilers (Intel, NVIDIA, Elbrus, etc), GCC and MSVC support UDLs. # if (FMT_HAS_FEATURE(cxx_user_literals) || FMT_GCC_VERSION >= 407 || \ @@ -140,53 +136,34 @@ FMT_END_NAMESPACE # endif #endif -#ifndef FMT_USE_UDL_TEMPLATE -// EDG frontend based compilers (icc, nvcc, PGI, etc) and GCC < 6.4 do not -// properly support UDL templates and GCC >= 9 warns about them. -# if FMT_USE_USER_DEFINED_LITERALS && \ - (!defined(__EDG_VERSION__) || __EDG_VERSION__ >= 501) && \ - ((FMT_GCC_VERSION >= 604 && __cplusplus >= 201402L) || \ - FMT_CLANG_VERSION >= 304) && \ - !defined(__PGI) && !defined(__NVCC__) -# define FMT_USE_UDL_TEMPLATE 1 -# else -# define FMT_USE_UDL_TEMPLATE 0 -# endif -#endif - -#ifndef FMT_USE_FLOAT -# define FMT_USE_FLOAT 1 -#endif - -#ifndef FMT_USE_DOUBLE -# define FMT_USE_DOUBLE 1 -#endif - -#ifndef FMT_USE_LONG_DOUBLE -# define FMT_USE_LONG_DOUBLE 1 -#endif - // Defining FMT_REDUCE_INT_INSTANTIATIONS to 1, will reduce the number of -// int_writer template instances to just one by only using the largest integer -// type. This results in a reduction in binary size but will cause a decrease in -// integer formatting performance. +// integer formatter template instantiations to just one by only using the +// largest integer type. This results in a reduction in binary size but will +// cause a decrease in integer formatting performance. #if !defined(FMT_REDUCE_INT_INSTANTIATIONS) # define FMT_REDUCE_INT_INSTANTIATIONS 0 #endif // __builtin_clz is broken in clang with Microsoft CodeGen: -// https://github.com/fmtlib/fmt/issues/519 -#if (FMT_GCC_VERSION || FMT_HAS_BUILTIN(__builtin_clz)) && !FMT_MSC_VER -# define FMT_BUILTIN_CLZ(n) __builtin_clz(n) +// https://github.com/fmtlib/fmt/issues/519. +#if !FMT_MSC_VER +# if FMT_HAS_BUILTIN(__builtin_clz) || FMT_GCC_VERSION || FMT_ICC_VERSION +# define FMT_BUILTIN_CLZ(n) __builtin_clz(n) +# endif +# if FMT_HAS_BUILTIN(__builtin_clzll) || FMT_GCC_VERSION || FMT_ICC_VERSION +# define FMT_BUILTIN_CLZLL(n) __builtin_clzll(n) +# endif #endif -#if (FMT_GCC_VERSION || FMT_HAS_BUILTIN(__builtin_clzll)) && !FMT_MSC_VER -# define FMT_BUILTIN_CLZLL(n) __builtin_clzll(n) -#endif -#if (FMT_GCC_VERSION || FMT_HAS_BUILTIN(__builtin_ctz)) -# define FMT_BUILTIN_CTZ(n) __builtin_ctz(n) -#endif -#if (FMT_GCC_VERSION || FMT_HAS_BUILTIN(__builtin_ctzll)) -# define FMT_BUILTIN_CTZLL(n) __builtin_ctzll(n) + +// __builtin_ctz is broken in Intel Compiler Classic on Windows: +// https://github.com/fmtlib/fmt/issues/2510. +#ifndef __ICL +# if FMT_HAS_BUILTIN(__builtin_ctz) || FMT_GCC_VERSION || FMT_ICC_VERSION +# define FMT_BUILTIN_CTZ(n) __builtin_ctz(n) +# endif +# if FMT_HAS_BUILTIN(__builtin_ctzll) || FMT_GCC_VERSION || FMT_ICC_VERSION +# define FMT_BUILTIN_CTZLL(n) __builtin_ctzll(n) +# endif #endif #if FMT_MSC_VER @@ -196,33 +173,32 @@ FMT_END_NAMESPACE // Some compilers masquerade as both MSVC and GCC-likes or otherwise support // __builtin_clz and __builtin_clzll, so only define FMT_BUILTIN_CLZ using the // MSVC intrinsics if the clz and clzll builtins are not available. -#if FMT_MSC_VER && !defined(FMT_BUILTIN_CLZLL) && \ - !defined(FMT_BUILTIN_CTZLL) && !defined(_MANAGED) +#if FMT_MSC_VER && !defined(FMT_BUILTIN_CLZLL) && !defined(FMT_BUILTIN_CTZLL) FMT_BEGIN_NAMESPACE namespace detail { // Avoid Clang with Microsoft CodeGen's -Wunknown-pragmas warning. -# ifndef __clang__ +# if !defined(__clang__) # pragma intrinsic(_BitScanForward) # pragma intrinsic(_BitScanReverse) -# endif -# if defined(_WIN64) && !defined(__clang__) -# pragma intrinsic(_BitScanForward64) -# pragma intrinsic(_BitScanReverse64) +# if defined(_WIN64) +# pragma intrinsic(_BitScanForward64) +# pragma intrinsic(_BitScanReverse64) +# endif # endif -inline int clz(uint32_t x) { +inline auto clz(uint32_t x) -> int { unsigned long r = 0; _BitScanReverse(&r, x); FMT_ASSERT(x != 0, ""); // Static analysis complains about using uninitialized data // "r", but the only way that can happen is if "x" is 0, // which the callers guarantee to not happen. - FMT_SUPPRESS_MSC_WARNING(6102) + FMT_MSC_WARNING(suppress : 6102) return 31 ^ static_cast(r); } # define FMT_BUILTIN_CLZ(n) detail::clz(n) -inline int clzll(uint64_t x) { +inline auto clzll(uint64_t x) -> int { unsigned long r = 0; # ifdef _WIN64 _BitScanReverse64(&r, x); @@ -233,24 +209,24 @@ inline int clzll(uint64_t x) { _BitScanReverse(&r, static_cast(x)); # endif FMT_ASSERT(x != 0, ""); - FMT_SUPPRESS_MSC_WARNING(6102) // Suppress a bogus static analysis warning. + FMT_MSC_WARNING(suppress : 6102) // Suppress a bogus static analysis warning. return 63 ^ static_cast(r); } # define FMT_BUILTIN_CLZLL(n) detail::clzll(n) -inline int ctz(uint32_t x) { +inline auto ctz(uint32_t x) -> int { unsigned long r = 0; _BitScanForward(&r, x); FMT_ASSERT(x != 0, ""); - FMT_SUPPRESS_MSC_WARNING(6102) // Suppress a bogus static analysis warning. + FMT_MSC_WARNING(suppress : 6102) // Suppress a bogus static analysis warning. return static_cast(r); } # define FMT_BUILTIN_CTZ(n) detail::ctz(n) -inline int ctzll(uint64_t x) { +inline auto ctzll(uint64_t x) -> int { unsigned long r = 0; FMT_ASSERT(x != 0, ""); - FMT_SUPPRESS_MSC_WARNING(6102) // Suppress a bogus static analysis warning. + FMT_MSC_WARNING(suppress : 6102) // Suppress a bogus static analysis warning. # ifdef _WIN64 _BitScanForward64(&r, x); # else @@ -267,31 +243,71 @@ inline int ctzll(uint64_t x) { FMT_END_NAMESPACE #endif -// Enable the deprecated numeric alignment. -#ifndef FMT_DEPRECATED_NUMERIC_ALIGN -# define FMT_DEPRECATED_NUMERIC_ALIGN 0 +#ifdef FMT_HEADER_ONLY +# define FMT_HEADER_ONLY_CONSTEXPR20 FMT_CONSTEXPR20 +#else +# define FMT_HEADER_ONLY_CONSTEXPR20 #endif FMT_BEGIN_NAMESPACE namespace detail { -// An equivalent of `*reinterpret_cast(&source)` that doesn't have -// undefined behavior (e.g. due to type aliasing). -// Example: uint64_t d = bit_cast(2.718); -template -inline Dest bit_cast(const Source& source) { - static_assert(sizeof(Dest) == sizeof(Source), "size mismatch"); - Dest dest; - std::memcpy(&dest, &source, sizeof(dest)); - return dest; +template class formatbuf : public Streambuf { + private: + using char_type = typename Streambuf::char_type; + using streamsize = decltype(std::declval().sputn(nullptr, 0)); + using int_type = typename Streambuf::int_type; + using traits_type = typename Streambuf::traits_type; + + buffer& buffer_; + + public: + explicit formatbuf(buffer& buf) : buffer_(buf) {} + + protected: + // The put area is always empty. This makes the implementation simpler and has + // the advantage that the streambuf and the buffer are always in sync and + // sputc never writes into uninitialized memory. A disadvantage is that each + // call to sputc always results in a (virtual) call to overflow. There is no + // disadvantage here for sputn since this always results in a call to xsputn. + + auto overflow(int_type ch) -> int_type override { + if (!traits_type::eq_int_type(ch, traits_type::eof())) + buffer_.push_back(static_cast(ch)); + return ch; + } + + auto xsputn(const char_type* s, streamsize count) -> streamsize override { + buffer_.append(s, s + count); + return count; + } +}; + +// Implementation of std::bit_cast for pre-C++20. +template +FMT_CONSTEXPR20 auto bit_cast(const From& from) -> To { + static_assert(sizeof(To) == sizeof(From), "size mismatch"); +#ifdef __cpp_lib_bit_cast + if (is_constant_evaluated()) return std::bit_cast(from); +#endif + auto to = To(); + std::memcpy(&to, &from, sizeof(to)); + return to; } -inline bool is_big_endian() { - const auto u = 1u; +inline auto is_big_endian() -> bool { +#ifdef _WIN32 + return false; +#elif defined(__BIG_ENDIAN__) + return true; +#elif defined(__BYTE_ORDER__) && defined(__ORDER_BIG_ENDIAN__) + return __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__; +#else struct bytes { - char data[sizeof(u)]; + char data[sizeof(int)]; }; - return bit_cast(u).data[0] == 0; + return bit_cast(1).data[0] == 0; +#endif } // A fallback implementation of uintptr_t for systems that lack it. @@ -301,7 +317,7 @@ struct fallback_uintptr { fallback_uintptr() = default; explicit fallback_uintptr(const void* p) { *this = bit_cast(p); - if (is_big_endian()) { + if (const_check(is_big_endian())) { for (size_t i = 0, j = sizeof(void*) - 1; i < j; ++i, --j) std::swap(value[i], value[j]); } @@ -309,26 +325,28 @@ struct fallback_uintptr { }; #ifdef UINTPTR_MAX using uintptr_t = ::uintptr_t; -inline uintptr_t to_uintptr(const void* p) { return bit_cast(p); } +inline auto to_uintptr(const void* p) -> uintptr_t { + return bit_cast(p); +} #else using uintptr_t = fallback_uintptr; -inline fallback_uintptr to_uintptr(const void* p) { +inline auto to_uintptr(const void* p) -> fallback_uintptr { return fallback_uintptr(p); } #endif // Returns the largest possible value for type T. Same as // std::numeric_limits::max() but shorter and not affected by the max macro. -template constexpr T max_value() { +template constexpr auto max_value() -> T { return (std::numeric_limits::max)(); } -template constexpr int num_bits() { +template constexpr auto num_bits() -> int { return std::numeric_limits::digits; } // std::numeric_limits::digits may return 0 for 128-bit ints. -template <> constexpr int num_bits() { return 128; } -template <> constexpr int num_bits() { return 128; } -template <> constexpr int num_bits() { +template <> constexpr auto num_bits() -> int { return 128; } +template <> constexpr auto num_bits() -> int { return 128; } +template <> constexpr auto num_bits() -> int { return static_cast(sizeof(void*) * std::numeric_limits::digits); } @@ -346,31 +364,38 @@ using iterator_t = decltype(std::begin(std::declval())); template using sentinel_t = decltype(std::end(std::declval())); // A workaround for std::string not having mutable data() until C++17. -template inline Char* get_data(std::basic_string& s) { +template +inline auto get_data(std::basic_string& s) -> Char* { return &s[0]; } template -inline typename Container::value_type* get_data(Container& c) { +inline auto get_data(Container& c) -> typename Container::value_type* { return c.data(); } #if defined(_SECURE_SCL) && _SECURE_SCL // Make a checked iterator to avoid MSVC warnings. template using checked_ptr = stdext::checked_array_iterator; -template checked_ptr make_checked(T* p, size_t size) { +template +constexpr auto make_checked(T* p, size_t size) -> checked_ptr { return {p, size}; } #else template using checked_ptr = T*; -template inline T* make_checked(T* p, size_t) { return p; } +template constexpr auto make_checked(T* p, size_t) -> T* { + return p; +} #endif +// Attempts to reserve space for n extra characters in the output range. +// Returns a pointer to the reserved range or a reference to it. template ::value)> -#if FMT_CLANG_VERSION +#if FMT_CLANG_VERSION >= 307 && !FMT_ICC_VERSION __attribute__((no_sanitize("undefined"))) #endif -inline checked_ptr -reserve(std::back_insert_iterator it, size_t n) { +inline auto +reserve(std::back_insert_iterator it, size_t n) + -> checked_ptr { Container& c = get_container(it); size_t size = c.size(); c.resize(size + n); @@ -378,21 +403,26 @@ reserve(std::back_insert_iterator it, size_t n) { } template -inline buffer_appender reserve(buffer_appender it, size_t n) { +inline auto reserve(buffer_appender it, size_t n) -> buffer_appender { buffer& buf = get_container(it); buf.try_reserve(buf.size() + n); return it; } -template inline Iterator& reserve(Iterator& it, size_t) { +template +constexpr auto reserve(Iterator& it, size_t) -> Iterator& { return it; } +template +using reserve_iterator = + remove_reference_t(), 0))>; + template -constexpr T* to_pointer(OutputIt, size_t) { +constexpr auto to_pointer(OutputIt, size_t) -> T* { return nullptr; } -template T* to_pointer(buffer_appender it, size_t n) { +template auto to_pointer(buffer_appender it, size_t n) -> T* { buffer& buf = get_container(it); auto size = buf.size(); if (buf.capacity() < size + n) return nullptr; @@ -401,195 +431,195 @@ template T* to_pointer(buffer_appender it, size_t n) { } template ::value)> -inline std::back_insert_iterator base_iterator( - std::back_insert_iterator& it, - checked_ptr) { +inline auto base_iterator(std::back_insert_iterator& it, + checked_ptr) + -> std::back_insert_iterator { return it; } template -inline Iterator base_iterator(Iterator, Iterator it) { +constexpr auto base_iterator(Iterator, Iterator it) -> Iterator { return it; } -// An output iterator that counts the number of objects written to it and -// discards them. -class counting_iterator { - private: - size_t count_; +// is spectacularly slow to compile in C++20 so use a simple fill_n +// instead (#1998). +template +FMT_CONSTEXPR auto fill_n(OutputIt out, Size count, const T& value) + -> OutputIt { + for (Size i = 0; i < count; ++i) *out++ = value; + return out; +} +template +FMT_CONSTEXPR20 auto fill_n(T* out, Size count, char value) -> T* { + if (is_constant_evaluated()) { + return fill_n(out, count, value); + } + std::memset(out, value, to_unsigned(count)); + return out + count; +} - public: - using iterator_category = std::output_iterator_tag; - using difference_type = std::ptrdiff_t; - using pointer = void; - using reference = void; - using _Unchecked_type = counting_iterator; // Mark iterator as checked. +#ifdef __cpp_char8_t +using char8_type = char8_t; +#else +enum char8_type : unsigned char {}; +#endif - struct value_type { - template void operator=(const T&) {} +template +FMT_CONSTEXPR FMT_NOINLINE auto copy_str_noinline(InputIt begin, InputIt end, + OutputIt out) -> OutputIt { + return copy_str(begin, end, out); +} + +// A public domain branchless UTF-8 decoder by Christopher Wellons: +// https://github.com/skeeto/branchless-utf8 +/* Decode the next character, c, from s, reporting errors in e. + * + * Since this is a branchless decoder, four bytes will be read from the + * buffer regardless of the actual length of the next character. This + * means the buffer _must_ have at least three bytes of zero padding + * following the end of the data stream. + * + * Errors are reported in e, which will be non-zero if the parsed + * character was somehow invalid: invalid byte sequence, non-canonical + * encoding, or a surrogate half. + * + * The function returns a pointer to the next character. When an error + * occurs, this pointer will be a guess that depends on the particular + * error, but it will always advance at least one byte. + */ +FMT_CONSTEXPR inline auto utf8_decode(const char* s, uint32_t* c, int* e) + -> const char* { + constexpr const int masks[] = {0x00, 0x7f, 0x1f, 0x0f, 0x07}; + constexpr const uint32_t mins[] = {4194304, 0, 128, 2048, 65536}; + constexpr const int shiftc[] = {0, 18, 12, 6, 0}; + constexpr const int shifte[] = {0, 6, 4, 2, 0}; + + int len = code_point_length(s); + const char* next = s + len; + + // Assume a four-byte character and load four bytes. Unused bits are + // shifted out. + *c = uint32_t(s[0] & masks[len]) << 18; + *c |= uint32_t(s[1] & 0x3f) << 12; + *c |= uint32_t(s[2] & 0x3f) << 6; + *c |= uint32_t(s[3] & 0x3f) << 0; + *c >>= shiftc[len]; + + // Accumulate the various error conditions. + using uchar = unsigned char; + *e = (*c < mins[len]) << 6; // non-canonical encoding + *e |= ((*c >> 11) == 0x1b) << 7; // surrogate half? + *e |= (*c > 0x10FFFF) << 8; // out of range? + *e |= (uchar(s[1]) & 0xc0) >> 2; + *e |= (uchar(s[2]) & 0xc0) >> 4; + *e |= uchar(s[3]) >> 6; + *e ^= 0x2a; // top two bits of each tail byte correct? + *e >>= shifte[len]; + + return next; +} + +constexpr uint32_t invalid_code_point = ~uint32_t(); + +// Invokes f(cp, sv) for every code point cp in s with sv being the string view +// corresponding to the code point. cp is invalid_code_point on error. +template +FMT_CONSTEXPR void for_each_codepoint(string_view s, F f) { + auto decode = [f](const char* buf_ptr, const char* ptr) { + auto cp = uint32_t(); + auto error = 0; + auto end = utf8_decode(buf_ptr, &cp, &error); + bool result = f(error ? invalid_code_point : cp, + string_view(ptr, to_unsigned(end - buf_ptr))); + return result ? end : nullptr; }; - - counting_iterator() : count_(0) {} - - size_t count() const { return count_; } - - counting_iterator& operator++() { - ++count_; - return *this; + auto p = s.data(); + const size_t block_size = 4; // utf8_decode always reads blocks of 4 chars. + if (s.size() >= block_size) { + for (auto end = p + s.size() - block_size + 1; p < end;) { + p = decode(p, p); + if (!p) return; + } } - counting_iterator operator++(int) { - auto it = *this; - ++*this; - return it; + if (auto num_chars_left = s.data() + s.size() - p) { + char buf[2 * block_size - 1] = {}; + copy_str(p, p + num_chars_left, buf); + const char* buf_ptr = buf; + do { + auto end = decode(buf_ptr, p); + if (!end) return; + p += end - buf_ptr; + buf_ptr = end; + } while (buf_ptr - buf < num_chars_left); } - - friend counting_iterator operator+(counting_iterator it, difference_type n) { - it.count_ += static_cast(n); - return it; - } - - value_type operator*() const { return {}; } -}; - -template class truncating_iterator_base { - protected: - OutputIt out_; - size_t limit_; - size_t count_; - - truncating_iterator_base(OutputIt out, size_t limit) - : out_(out), limit_(limit), count_(0) {} - - public: - using iterator_category = std::output_iterator_tag; - using value_type = typename std::iterator_traits::value_type; - using difference_type = void; - using pointer = void; - using reference = void; - using _Unchecked_type = - truncating_iterator_base; // Mark iterator as checked. - - OutputIt base() const { return out_; } - size_t count() const { return count_; } -}; - -// An output iterator that truncates the output and counts the number of objects -// written to it. -template ::value_type>::type> -class truncating_iterator; - -template -class truncating_iterator - : public truncating_iterator_base { - mutable typename truncating_iterator_base::value_type blackhole_; - - public: - using value_type = typename truncating_iterator_base::value_type; - - truncating_iterator(OutputIt out, size_t limit) - : truncating_iterator_base(out, limit) {} - - truncating_iterator& operator++() { - if (this->count_++ < this->limit_) ++this->out_; - return *this; - } - - truncating_iterator operator++(int) { - auto it = *this; - ++*this; - return it; - } - - value_type& operator*() const { - return this->count_ < this->limit_ ? *this->out_ : blackhole_; - } -}; - -template -class truncating_iterator - : public truncating_iterator_base { - public: - truncating_iterator(OutputIt out, size_t limit) - : truncating_iterator_base(out, limit) {} - - template truncating_iterator& operator=(T val) { - if (this->count_++ < this->limit_) *this->out_++ = val; - return *this; - } - - truncating_iterator& operator++() { return *this; } - truncating_iterator& operator++(int) { return *this; } - truncating_iterator& operator*() { return *this; } -}; +} template -inline size_t count_code_points(basic_string_view s) { +inline auto compute_width(basic_string_view s) -> size_t { return s.size(); } -// Counts the number of code points in a UTF-8 string. -inline size_t count_code_points(basic_string_view s) { - const char* data = s.data(); +// Computes approximate display width of a UTF-8 string. +FMT_CONSTEXPR inline size_t compute_width(string_view s) { size_t num_code_points = 0; - for (size_t i = 0, size = s.size(); i != size; ++i) { - if ((data[i] & 0xc0) != 0x80) ++num_code_points; - } + // It is not a lambda for compatibility with C++14. + struct count_code_points { + size_t* count; + FMT_CONSTEXPR auto operator()(uint32_t cp, string_view) const -> bool { + *count += detail::to_unsigned( + 1 + + (cp >= 0x1100 && + (cp <= 0x115f || // Hangul Jamo init. consonants + cp == 0x2329 || // LEFT-POINTING ANGLE BRACKET + cp == 0x232a || // RIGHT-POINTING ANGLE BRACKET + // CJK ... Yi except IDEOGRAPHIC HALF FILL SPACE: + (cp >= 0x2e80 && cp <= 0xa4cf && cp != 0x303f) || + (cp >= 0xac00 && cp <= 0xd7a3) || // Hangul Syllables + (cp >= 0xf900 && cp <= 0xfaff) || // CJK Compatibility Ideographs + (cp >= 0xfe10 && cp <= 0xfe19) || // Vertical Forms + (cp >= 0xfe30 && cp <= 0xfe6f) || // CJK Compatibility Forms + (cp >= 0xff00 && cp <= 0xff60) || // Fullwidth Forms + (cp >= 0xffe0 && cp <= 0xffe6) || // Fullwidth Forms + (cp >= 0x20000 && cp <= 0x2fffd) || // CJK + (cp >= 0x30000 && cp <= 0x3fffd) || + // Miscellaneous Symbols and Pictographs + Emoticons: + (cp >= 0x1f300 && cp <= 0x1f64f) || + // Supplemental Symbols and Pictographs: + (cp >= 0x1f900 && cp <= 0x1f9ff)))); + return true; + } + }; + for_each_codepoint(s, count_code_points{&num_code_points}); return num_code_points; } -inline size_t count_code_points(basic_string_view s) { - return count_code_points(basic_string_view( +inline auto compute_width(basic_string_view s) -> size_t { + return compute_width(basic_string_view( reinterpret_cast(s.data()), s.size())); } template -inline size_t code_point_index(basic_string_view s, size_t n) { +inline auto code_point_index(basic_string_view s, size_t n) -> size_t { size_t size = s.size(); return n < size ? n : size; } // Calculates the index of the nth code point in a UTF-8 string. -inline size_t code_point_index(basic_string_view s, size_t n) { +inline auto code_point_index(basic_string_view s, size_t n) + -> size_t { const char8_type* data = s.data(); size_t num_code_points = 0; for (size_t i = 0, size = s.size(); i != size; ++i) { - if ((data[i] & 0xc0) != 0x80 && ++num_code_points > n) { - return i; - } + if ((data[i] & 0xc0) != 0x80 && ++num_code_points > n) return i; } return s.size(); } -template -using needs_conversion = bool_constant< - std::is_same::value_type, - char>::value && - std::is_same::value>; - -template ::value)> -OutputIt copy_str(InputIt begin, InputIt end, OutputIt it) { - return std::copy(begin, end, it); -} - -template ::value)> -OutputIt copy_str(InputIt begin, InputIt end, OutputIt it) { - return std::transform(begin, end, it, - [](char c) { return static_cast(c); }); -} - -template -inline counting_iterator copy_str(InputIt begin, InputIt end, - counting_iterator it) { - return it + (end - begin); -} - -template -using is_fast_float = bool_constant::is_iec559 && - sizeof(T) <= sizeof(double)>; +template ::value> +struct is_fast_float : bool_constant::is_iec559 && + sizeof(T) <= sizeof(double)> {}; +template struct is_fast_float : std::false_type {}; #ifndef FMT_USE_FULL_CACHE_DRAGONBOX # define FMT_USE_FULL_CACHE_DRAGONBOX 0 @@ -598,7 +628,7 @@ using is_fast_float = bool_constant::is_iec559 && template template void buffer::append(const U* begin, const U* end) { - do { + while (begin != end) { auto count = to_unsigned(end - begin); try_reserve(size_ + count); auto free_cap = capacity_ - size_; @@ -606,16 +636,17 @@ void buffer::append(const U* begin, const U* end) { std::uninitialized_copy_n(begin, count, make_checked(ptr_ + size_, count)); size_ += count; begin += count; - } while (begin != end); + } } -template -void iterator_buffer::flush() { - out_ = std::copy_n(data_, this->limit(this->size()), out_); - this->clear(); -} +template +struct is_locale : std::false_type {}; +template +struct is_locale> : std::true_type {}; } // namespace detail +FMT_MODULE_EXPORT_BEGIN + // The number of characters to store in the basic_memory_buffer object itself // to avoid dynamic memory allocation. enum { inline_buffer_size = 500 }; @@ -625,20 +656,12 @@ enum { inline_buffer_size = 500 }; A dynamically growing memory buffer for trivially copyable/constructible types with the first ``SIZE`` elements stored in the object itself. - You can use one of the following type aliases for common character types: - - +----------------+------------------------------+ - | Type | Definition | - +================+==============================+ - | memory_buffer | basic_memory_buffer | - +----------------+------------------------------+ - | wmemory_buffer | basic_memory_buffer | - +----------------+------------------------------+ + You can use the ``memory_buffer`` type alias for ``char`` instead. **Example**:: - fmt::memory_buffer out; - format_to(out, "The answer is {}.", 42); + auto out = fmt::memory_buffer(); + format_to(std::back_inserter(out), "The answer is {}.", 42); This will append the following output to the ``out`` object: @@ -659,34 +682,43 @@ class basic_memory_buffer final : public detail::buffer { Allocator alloc_; // Deallocate memory allocated by the buffer. - void deallocate() { + FMT_CONSTEXPR20 void deallocate() { T* data = this->data(); if (data != store_) alloc_.deallocate(data, this->capacity()); } protected: - void grow(size_t size) final FMT_OVERRIDE; + FMT_CONSTEXPR20 void grow(size_t size) override; public: using value_type = T; using const_reference = const T&; - explicit basic_memory_buffer(const Allocator& alloc = Allocator()) + FMT_CONSTEXPR20 explicit basic_memory_buffer( + const Allocator& alloc = Allocator()) : alloc_(alloc) { this->set(store_, SIZE); + if (detail::is_constant_evaluated()) { + detail::fill_n(store_, SIZE, T{}); + } } - ~basic_memory_buffer() { deallocate(); } + FMT_CONSTEXPR20 ~basic_memory_buffer() { deallocate(); } private: // Move data from other to this buffer. - void move(basic_memory_buffer& other) { + FMT_CONSTEXPR20 void move(basic_memory_buffer& other) { alloc_ = std::move(other.alloc_); T* data = other.data(); size_t size = other.size(), capacity = other.capacity(); if (data == other.store_) { this->set(store_, capacity); - std::uninitialized_copy(other.store_, other.store_ + size, - detail::make_checked(store_, capacity)); + if (detail::is_constant_evaluated()) { + detail::copy_str(other.store_, other.store_ + size, + detail::make_checked(store_, capacity)); + } else { + std::uninitialized_copy(other.store_, other.store_ + size, + detail::make_checked(store_, capacity)); + } } else { this->set(data, capacity); // Set pointer to the inline array so that delete is not called @@ -703,14 +735,18 @@ class basic_memory_buffer final : public detail::buffer { of the other object to it. \endrst */ - basic_memory_buffer(basic_memory_buffer&& other) FMT_NOEXCEPT { move(other); } + FMT_CONSTEXPR20 basic_memory_buffer(basic_memory_buffer&& other) + FMT_NOEXCEPT { + move(other); + } /** \rst Moves the content of the other ``basic_memory_buffer`` object to this one. \endrst */ - basic_memory_buffer& operator=(basic_memory_buffer&& other) FMT_NOEXCEPT { + auto operator=(basic_memory_buffer&& other) FMT_NOEXCEPT + -> basic_memory_buffer& { FMT_ASSERT(this != &other, ""); deallocate(); move(other); @@ -718,13 +754,13 @@ class basic_memory_buffer final : public detail::buffer { } // Returns a copy of the allocator associated with this buffer. - Allocator get_allocator() const { return alloc_; } + auto get_allocator() const -> Allocator { return alloc_; } /** Resizes the buffer to contain *count* elements. If T is a POD type new elements may not be initialized. */ - void resize(size_t count) { this->try_resize(count); } + FMT_CONSTEXPR20 void resize(size_t count) { this->try_resize(count); } /** Increases the buffer capacity to *new_capacity*. */ void reserve(size_t new_capacity) { this->try_reserve(new_capacity); } @@ -738,13 +774,18 @@ class basic_memory_buffer final : public detail::buffer { }; template -void basic_memory_buffer::grow(size_t size) { +FMT_CONSTEXPR20 void basic_memory_buffer::grow( + size_t size) { #ifdef FMT_FUZZ if (size > 5000) throw std::runtime_error("fuzz mode - won't grow that much"); #endif + const size_t max_size = std::allocator_traits::max_size(alloc_); size_t old_capacity = this->capacity(); size_t new_capacity = old_capacity + old_capacity / 2; - if (size > new_capacity) new_capacity = size; + if (size > new_capacity) + new_capacity = size; + else if (new_capacity > max_size) + new_capacity = size > max_size ? size : max_size; T* old_data = this->data(); T* new_data = std::allocator_traits::allocate(alloc_, new_capacity); @@ -759,12 +800,15 @@ void basic_memory_buffer::grow(size_t size) { } using memory_buffer = basic_memory_buffer; -using wmemory_buffer = basic_memory_buffer; template struct is_contiguous> : std::true_type { }; +namespace detail { +FMT_API void print(std::FILE*, string_view); +} + /** A formatting error such as invalid format string. */ FMT_CLASS_API class FMT_API format_error : public std::runtime_error { @@ -776,10 +820,62 @@ class FMT_API format_error : public std::runtime_error { format_error& operator=(const format_error&) = default; format_error(format_error&&) = default; format_error& operator=(format_error&&) = default; - ~format_error() FMT_NOEXCEPT FMT_OVERRIDE; + ~format_error() FMT_NOEXCEPT override FMT_MSC_DEFAULT; }; -namespace detail { +/** + \rst + Constructs a `~fmt::format_arg_store` object that contains references + to arguments and can be implicitly converted to `~fmt::format_args`. + If ``fmt`` is a compile-time string then `make_args_checked` checks + its validity at compile time. + \endrst + */ +template > +FMT_INLINE auto make_args_checked(const S& fmt, + const remove_reference_t&... args) + -> format_arg_store, remove_reference_t...> { + static_assert( + detail::count<( + std::is_base_of>::value && + std::is_reference::value)...>() == 0, + "passing views as lvalues is disallowed"); + detail::check_format_string(fmt); + return {args...}; +} + +// compile-time support +namespace detail_exported { +#if FMT_USE_NONTYPE_TEMPLATE_PARAMETERS +template struct fixed_string { + constexpr fixed_string(const Char (&str)[N]) { + detail::copy_str(static_cast(str), + str + N, data); + } + Char data[N]{}; +}; +#endif + +// Converts a compile-time string to basic_string_view. +template +constexpr auto compile_string_to_view(const Char (&s)[N]) + -> basic_string_view { + // Remove trailing NUL character if needed. Won't be present if this is used + // with a raw character array (i.e. not defined as a string). + return {s, N - (std::char_traits::to_int_type(s[N - 1]) == 0 ? 1 : 0)}; +} +template +constexpr auto compile_string_to_view(detail::std_string_view s) + -> basic_string_view { + return {s.data(), s.size()}; +} +} // namespace detail_exported + +FMT_BEGIN_DETAIL_NAMESPACE + +template struct is_integral : std::is_integral {}; +template <> struct is_integral : std::true_type {}; +template <> struct is_integral : std::true_type {}; template using is_signed = @@ -789,16 +885,16 @@ using is_signed = // Returns true if value is negative, false otherwise. // Same as `value < 0` but doesn't produce warnings if T is an unsigned type. template ::value)> -FMT_CONSTEXPR bool is_negative(T value) { +FMT_CONSTEXPR auto is_negative(T value) -> bool { return value < 0; } template ::value)> -FMT_CONSTEXPR bool is_negative(T) { +FMT_CONSTEXPR auto is_negative(T) -> bool { return false; } template ::value)> -FMT_CONSTEXPR bool is_supported_floating_point(T) { +FMT_CONSTEXPR auto is_supported_floating_point(T) -> uint16_t { return (std::is_same::value && FMT_USE_FLOAT) || (std::is_same::value && FMT_USE_DOUBLE) || (std::is_same::value && FMT_USE_LONG_DOUBLE); @@ -811,117 +907,33 @@ using uint32_or_64_or_128_t = conditional_t() <= 32 && !FMT_REDUCE_INT_INSTANTIATIONS, uint32_t, conditional_t() <= 64, uint64_t, uint128_t>>; +template +using uint64_or_128_t = conditional_t() <= 64, uint64_t, uint128_t>; -// 128-bit integer type used internally -struct FMT_EXTERN_TEMPLATE_API uint128_wrapper { - uint128_wrapper() = default; +#define FMT_POWERS_OF_10(factor) \ + factor * 10, (factor)*100, (factor)*1000, (factor)*10000, (factor)*100000, \ + (factor)*1000000, (factor)*10000000, (factor)*100000000, \ + (factor)*1000000000 -#if FMT_USE_INT128 - uint128_t internal_; - - uint128_wrapper(uint64_t high, uint64_t low) FMT_NOEXCEPT - : internal_{static_cast(low) | - (static_cast(high) << 64)} {} - - uint128_wrapper(uint128_t u) : internal_{u} {} - - uint64_t high() const FMT_NOEXCEPT { return uint64_t(internal_ >> 64); } - uint64_t low() const FMT_NOEXCEPT { return uint64_t(internal_); } - - uint128_wrapper& operator+=(uint64_t n) FMT_NOEXCEPT { - internal_ += n; - return *this; - } -#else - uint64_t high_; - uint64_t low_; - - uint128_wrapper(uint64_t high, uint64_t low) FMT_NOEXCEPT : high_{high}, - low_{low} {} - - uint64_t high() const FMT_NOEXCEPT { return high_; } - uint64_t low() const FMT_NOEXCEPT { return low_; } - - uint128_wrapper& operator+=(uint64_t n) FMT_NOEXCEPT { -# if defined(_MSC_VER) && defined(_M_X64) - unsigned char carry = _addcarry_u64(0, low_, n, &low_); - _addcarry_u64(carry, high_, 0, &high_); - return *this; -# else - uint64_t sum = low_ + n; - high_ += (sum < low_ ? 1 : 0); - low_ = sum; - return *this; -# endif - } -#endif -}; - -// Table entry type for divisibility test used internally -template struct FMT_EXTERN_TEMPLATE_API divtest_table_entry { - T mod_inv; - T max_quotient; -}; - -// Static data is placed in this class template for the header-only config. -template struct FMT_EXTERN_TEMPLATE_API basic_data { - static const uint64_t powers_of_10_64[]; - static const uint32_t zero_or_powers_of_10_32[]; - static const uint64_t zero_or_powers_of_10_64[]; - static const uint64_t grisu_pow10_significands[]; - static const int16_t grisu_pow10_exponents[]; - static const divtest_table_entry divtest_table_for_pow5_32[]; - static const divtest_table_entry divtest_table_for_pow5_64[]; - static const uint64_t dragonbox_pow10_significands_64[]; - static const uint128_wrapper dragonbox_pow10_significands_128[]; - // log10(2) = 0x0.4d104d427de7fbcc... - static const uint64_t log10_2_significand = 0x4d104d427de7fbcc; -#if !FMT_USE_FULL_CACHE_DRAGONBOX - static const uint64_t powers_of_5_64[]; - static const uint32_t dragonbox_pow10_recovery_errors[]; -#endif - // GCC generates slightly better code for pairs than chars. - using digit_pair = char[2]; - static const digit_pair digits[]; - static const char hex_digits[]; - static const char foreground_color[]; - static const char background_color[]; - static const char reset_color[5]; - static const wchar_t wreset_color[5]; - static const char signs[]; - static const char left_padding_shifts[5]; - static const char right_padding_shifts[5]; -}; - -// Maps bsr(n) to ceil(log10(pow(2, bsr(n) + 1) - 1)). -// This is a function instead of an array to workaround a bug in GCC10 (#1810). -FMT_INLINE uint16_t bsr2log10(int bsr) { - static constexpr uint16_t data[] = { - 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, - 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 9, 9, 9, 10, 10, 10, - 10, 11, 11, 11, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 15, 15, - 15, 16, 16, 16, 16, 17, 17, 17, 18, 18, 18, 19, 19, 19, 19, 20}; - return data[bsr]; +// Converts value in the range [0, 100) to a string. +constexpr const char* digits2(size_t value) { + // GCC generates slightly better code when value is pointer-size. + return &"0001020304050607080910111213141516171819" + "2021222324252627282930313233343536373839" + "4041424344454647484950515253545556575859" + "6061626364656667686970717273747576777879" + "8081828384858687888990919293949596979899"[value * 2]; } -#ifndef FMT_EXPORTED -FMT_EXTERN template struct basic_data; +// Sign is a template parameter to workaround a bug in gcc 4.8. +template constexpr Char sign(Sign s) { +#if !FMT_GCC_VERSION || FMT_GCC_VERSION >= 604 + static_assert(std::is_same::value, ""); #endif - -// This is a struct rather than an alias to avoid shadowing warnings in gcc. -struct data : basic_data<> {}; - -#ifdef FMT_BUILTIN_CLZLL -// Returns the number of decimal digits in n. Leading zeros are not counted -// except for n == 0 in which case count_digits returns 1. -inline int count_digits(uint64_t n) { - // https://github.com/fmtlib/format-benchmark/blob/master/digits10 - auto t = bsr2log10(FMT_BUILTIN_CLZLL(n | 1) ^ 63); - return t - (n < data::zero_or_powers_of_10_64[t]); + return static_cast("\0-+ "[s]); } -#else -// Fallback version of count_digits used when __builtin_clz is not available. -inline int count_digits(uint64_t n) { + +template FMT_CONSTEXPR auto count_digits_fallback(T n) -> int { int count = 1; for (;;) { // Integer division is slow so do it for a group of four digits instead @@ -935,103 +947,152 @@ inline int count_digits(uint64_t n) { count += 4; } } -#endif - #if FMT_USE_INT128 -inline int count_digits(uint128_t n) { - int count = 1; - for (;;) { - // Integer division is slow so do it for a group of four digits instead - // of for every digit. The idea comes from the talk by Alexandrescu - // "Three Optimization Tips for C++". See speed-test for a comparison. - if (n < 10) return count; - if (n < 100) return count + 1; - if (n < 1000) return count + 2; - if (n < 10000) return count + 3; - n /= 10000U; - count += 4; - } +FMT_CONSTEXPR inline auto count_digits(uint128_t n) -> int { + return count_digits_fallback(n); } #endif +#ifdef FMT_BUILTIN_CLZLL +// It is a separate function rather than a part of count_digits to workaround +// the lack of static constexpr in constexpr functions. +inline auto do_count_digits(uint64_t n) -> int { + // This has comparable performance to the version by Kendall Willets + // (https://github.com/fmtlib/format-benchmark/blob/master/digits10) + // but uses smaller tables. + // Maps bsr(n) to ceil(log10(pow(2, bsr(n) + 1) - 1)). + static constexpr uint8_t bsr2log10[] = { + 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, + 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 9, 9, 9, 10, 10, 10, + 10, 11, 11, 11, 12, 12, 12, 13, 13, 13, 13, 14, 14, 14, 15, 15, + 15, 16, 16, 16, 16, 17, 17, 17, 18, 18, 18, 19, 19, 19, 19, 20}; + auto t = bsr2log10[FMT_BUILTIN_CLZLL(n | 1) ^ 63]; + static constexpr const uint64_t zero_or_powers_of_10[] = { + 0, 0, FMT_POWERS_OF_10(1U), FMT_POWERS_OF_10(1000000000ULL), + 10000000000000000000ULL}; + return t - (n < zero_or_powers_of_10[t]); +} +#endif + +// Returns the number of decimal digits in n. Leading zeros are not counted +// except for n == 0 in which case count_digits returns 1. +FMT_CONSTEXPR20 inline auto count_digits(uint64_t n) -> int { +#ifdef FMT_BUILTIN_CLZLL + if (!is_constant_evaluated()) { + return do_count_digits(n); + } +#endif + return count_digits_fallback(n); +} + // Counts the number of digits in n. BITS = log2(radix). -template inline int count_digits(UInt n) { - int num_digits = 0; - do { - ++num_digits; - } while ((n >>= BITS) != 0); - return num_digits; +template +FMT_CONSTEXPR auto count_digits(UInt n) -> int { +#ifdef FMT_BUILTIN_CLZ + if (num_bits() == 32) + return (FMT_BUILTIN_CLZ(static_cast(n) | 1) ^ 31) / BITS + 1; +#endif + // Lambda avoids unreachable code warnings from NVHPC. + return [](UInt m) { + int num_digits = 0; + do { + ++num_digits; + } while ((m >>= BITS) != 0); + return num_digits; + }(n); } -template <> int count_digits<4>(detail::fallback_uintptr n); - -#if FMT_GCC_VERSION || FMT_CLANG_VERSION -# define FMT_ALWAYS_INLINE inline __attribute__((always_inline)) -#elif FMT_MSC_VER -# define FMT_ALWAYS_INLINE __forceinline -#else -# define FMT_ALWAYS_INLINE inline -#endif - -// To suppress unnecessary security cookie checks -#if FMT_MSC_VER && !FMT_CLANG_VERSION -# define FMT_SAFEBUFFERS __declspec(safebuffers) -#else -# define FMT_SAFEBUFFERS -#endif +template <> auto count_digits<4>(detail::fallback_uintptr n) -> int; #ifdef FMT_BUILTIN_CLZ -// Optional version of count_digits for better performance on 32-bit platforms. -inline int count_digits(uint32_t n) { - auto t = bsr2log10(FMT_BUILTIN_CLZ(n | 1) ^ 31); - return t - (n < data::zero_or_powers_of_10_32[t]); +// It is a separate function rather than a part of count_digits to workaround +// the lack of static constexpr in constexpr functions. +FMT_INLINE auto do_count_digits(uint32_t n) -> int { +// An optimization by Kendall Willets from https://bit.ly/3uOIQrB. +// This increments the upper 32 bits (log10(T) - 1) when >= T is added. +# define FMT_INC(T) (((sizeof(# T) - 1ull) << 32) - T) + static constexpr uint64_t table[] = { + FMT_INC(0), FMT_INC(0), FMT_INC(0), // 8 + FMT_INC(10), FMT_INC(10), FMT_INC(10), // 64 + FMT_INC(100), FMT_INC(100), FMT_INC(100), // 512 + FMT_INC(1000), FMT_INC(1000), FMT_INC(1000), // 4096 + FMT_INC(10000), FMT_INC(10000), FMT_INC(10000), // 32k + FMT_INC(100000), FMT_INC(100000), FMT_INC(100000), // 256k + FMT_INC(1000000), FMT_INC(1000000), FMT_INC(1000000), // 2048k + FMT_INC(10000000), FMT_INC(10000000), FMT_INC(10000000), // 16M + FMT_INC(100000000), FMT_INC(100000000), FMT_INC(100000000), // 128M + FMT_INC(1000000000), FMT_INC(1000000000), FMT_INC(1000000000), // 1024M + FMT_INC(1000000000), FMT_INC(1000000000) // 4B + }; + auto inc = table[FMT_BUILTIN_CLZ(n | 1) ^ 31]; + return static_cast((n + inc) >> 32); } #endif -template constexpr int digits10() FMT_NOEXCEPT { +// Optional version of count_digits for better performance on 32-bit platforms. +FMT_CONSTEXPR20 inline auto count_digits(uint32_t n) -> int { +#ifdef FMT_BUILTIN_CLZ + if (!is_constant_evaluated()) { + return do_count_digits(n); + } +#endif + return count_digits_fallback(n); +} + +template constexpr auto digits10() FMT_NOEXCEPT -> int { return std::numeric_limits::digits10; } -template <> constexpr int digits10() FMT_NOEXCEPT { return 38; } -template <> constexpr int digits10() FMT_NOEXCEPT { return 38; } - -template FMT_API std::string grouping_impl(locale_ref loc); -template inline std::string grouping(locale_ref loc) { - return grouping_impl(loc); +template <> constexpr auto digits10() FMT_NOEXCEPT -> int { + return 38; } -template <> inline std::string grouping(locale_ref loc) { - return grouping_impl(loc); +template <> constexpr auto digits10() FMT_NOEXCEPT -> int { + return 38; } -template FMT_API Char thousands_sep_impl(locale_ref loc); -template inline Char thousands_sep(locale_ref loc) { - return Char(thousands_sep_impl(loc)); +template struct thousands_sep_result { + std::string grouping; + Char thousands_sep; +}; + +template +FMT_API auto thousands_sep_impl(locale_ref loc) -> thousands_sep_result; +template +inline auto thousands_sep(locale_ref loc) -> thousands_sep_result { + auto result = thousands_sep_impl(loc); + return {result.grouping, Char(result.thousands_sep)}; } -template <> inline wchar_t thousands_sep(locale_ref loc) { +template <> +inline auto thousands_sep(locale_ref loc) -> thousands_sep_result { return thousands_sep_impl(loc); } -template FMT_API Char decimal_point_impl(locale_ref loc); -template inline Char decimal_point(locale_ref loc) { +template +FMT_API auto decimal_point_impl(locale_ref loc) -> Char; +template inline auto decimal_point(locale_ref loc) -> Char { return Char(decimal_point_impl(loc)); } -template <> inline wchar_t decimal_point(locale_ref loc) { +template <> inline auto decimal_point(locale_ref loc) -> wchar_t { return decimal_point_impl(loc); } // Compares two characters for equality. -template bool equal2(const Char* lhs, const char* rhs) { - return lhs[0] == rhs[0] && lhs[1] == rhs[1]; +template auto equal2(const Char* lhs, const char* rhs) -> bool { + return lhs[0] == Char(rhs[0]) && lhs[1] == Char(rhs[1]); } -inline bool equal2(const char* lhs, const char* rhs) { +inline auto equal2(const char* lhs, const char* rhs) -> bool { return memcmp(lhs, rhs, 2) == 0; } // Copies two characters from src to dst. -template void copy2(Char* dst, const char* src) { +template +FMT_CONSTEXPR20 FMT_INLINE void copy2(Char* dst, const char* src) { + if (!is_constant_evaluated() && sizeof(Char) == sizeof(char)) { + memcpy(dst, src, 2); + return; + } *dst++ = static_cast(*src++); *dst = static_cast(*src); } -FMT_INLINE void copy2(char* dst, const char* src) { memcpy(dst, src, 2); } template struct format_decimal_result { Iterator begin; @@ -1042,8 +1103,8 @@ template struct format_decimal_result { // buffer of specified size. The caller must ensure that the buffer is large // enough. template -inline format_decimal_result format_decimal(Char* out, UInt value, - int size) { +FMT_CONSTEXPR20 auto format_decimal(Char* out, UInt value, int size) + -> format_decimal_result { FMT_ASSERT(size >= count_digits(value), "invalid digit count"); out += size; Char* end = out; @@ -1052,7 +1113,7 @@ inline format_decimal_result format_decimal(Char* out, UInt value, // of for every digit. The idea comes from the talk by Alexandrescu // "Three Optimization Tips for C++". See speed-test for a comparison. out -= 2; - copy2(out, data::digits[value % 100]); + copy2(out, digits2(static_cast(value % 100))); value /= 100; } if (value < 10) { @@ -1060,27 +1121,27 @@ inline format_decimal_result format_decimal(Char* out, UInt value, return {out, end}; } out -= 2; - copy2(out, data::digits[value]); + copy2(out, digits2(static_cast(value))); return {out, end}; } template >::value)> -inline format_decimal_result format_decimal(Iterator out, UInt value, - int size) { +inline auto format_decimal(Iterator out, UInt value, int size) + -> format_decimal_result { // Buffer is large enough to hold all digits (digits10 + 1). Char buffer[digits10() + 1]; auto end = format_decimal(buffer, value, size).end; - return {out, detail::copy_str(buffer, end, out)}; + return {out, detail::copy_str_noinline(buffer, end, out)}; } template -inline Char* format_uint(Char* buffer, UInt value, int num_digits, - bool upper = false) { +FMT_CONSTEXPR auto format_uint(Char* buffer, UInt value, int num_digits, + bool upper = false) -> Char* { buffer += num_digits; Char* end = buffer; do { - const char* digits = upper ? "0123456789ABCDEF" : data::hex_digits; + const char* digits = upper ? "0123456789ABCDEF" : "0123456789abcdef"; unsigned digit = (value & ((1 << BASE_BITS) - 1)); *--buffer = static_cast(BASE_BITS < 4 ? static_cast('0' + digit) : digits[digit]); @@ -1089,8 +1150,8 @@ inline Char* format_uint(Char* buffer, UInt value, int num_digits, } template -Char* format_uint(Char* buffer, detail::fallback_uintptr n, int num_digits, - bool = false) { +auto format_uint(Char* buffer, detail::fallback_uintptr n, int num_digits, + bool = false) -> Char* { auto char_digits = std::numeric_limits::digits / 4; int start = (num_digits + char_digits - 1) / char_digits - 1; if (int start_digits = num_digits % char_digits) { @@ -1103,7 +1164,7 @@ Char* format_uint(Char* buffer, detail::fallback_uintptr n, int num_digits, auto p = buffer; for (int i = 0; i < char_digits; ++i) { unsigned digit = (value & ((1 << BASE_BITS) - 1)); - *--p = static_cast(data::hex_digits[digit]); + *--p = static_cast("0123456789abcdef"[digit]); value >>= BASE_BITS; } } @@ -1111,7 +1172,8 @@ Char* format_uint(Char* buffer, detail::fallback_uintptr n, int num_digits, } template -inline It format_uint(It out, UInt value, int num_digits, bool upper = false) { +inline auto format_uint(It out, UInt value, int num_digits, bool upper = false) + -> It { if (auto ptr = to_pointer(out, to_unsigned(num_digits))) { format_uint(ptr, value, num_digits, upper); return out; @@ -1119,94 +1181,22 @@ inline It format_uint(It out, UInt value, int num_digits, bool upper = false) { // Buffer should be large enough to hold all digits (digits / BASE_BITS + 1). char buffer[num_bits() / BASE_BITS + 1]; format_uint(buffer, value, num_digits, upper); - return detail::copy_str(buffer, buffer + num_digits, out); + return detail::copy_str_noinline(buffer, buffer + num_digits, out); } // A converter from UTF-8 to UTF-16. class utf8_to_utf16 { private: - wmemory_buffer buffer_; + basic_memory_buffer buffer_; public: FMT_API explicit utf8_to_utf16(string_view s); - operator wstring_view() const { return {&buffer_[0], size()}; } - size_t size() const { return buffer_.size() - 1; } - const wchar_t* c_str() const { return &buffer_[0]; } - std::wstring str() const { return {&buffer_[0], size()}; } + operator basic_string_view() const { return {&buffer_[0], size()}; } + auto size() const -> size_t { return buffer_.size() - 1; } + auto c_str() const -> const wchar_t* { return &buffer_[0]; } + auto str() const -> std::wstring { return {&buffer_[0], size()}; } }; -template struct null {}; - -// Workaround an array initialization issue in gcc 4.8. -template struct fill_t { - private: - enum { max_size = 4 }; - Char data_[max_size]; - unsigned char size_; - - public: - FMT_CONSTEXPR void operator=(basic_string_view s) { - auto size = s.size(); - if (size > max_size) { - FMT_THROW(format_error("invalid fill")); - return; - } - for (size_t i = 0; i < size; ++i) data_[i] = s[i]; - size_ = static_cast(size); - } - - size_t size() const { return size_; } - const Char* data() const { return data_; } - - FMT_CONSTEXPR Char& operator[](size_t index) { return data_[index]; } - FMT_CONSTEXPR const Char& operator[](size_t index) const { - return data_[index]; - } - - static FMT_CONSTEXPR fill_t make() { - auto fill = fill_t(); - fill[0] = Char(' '); - fill.size_ = 1; - return fill; - } -}; -} // namespace detail - -// We cannot use enum classes as bit fields because of a gcc bug -// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61414. -namespace align { -enum type { none, left, right, center, numeric }; -} -using align_t = align::type; - -namespace sign { -enum type { none, minus, plus, space }; -} -using sign_t = sign::type; - -// Format specifiers for built-in and string types. -template struct basic_format_specs { - int width; - int precision; - char type; - align_t align : 4; - sign_t sign : 3; - bool alt : 1; // Alternate form ('#'). - detail::fill_t fill; - - constexpr basic_format_specs() - : width(0), - precision(-1), - type(0), - align(align::none), - sign(sign::none), - alt(false), - fill(detail::fill_t::make()) {} -}; - -using format_specs = basic_format_specs; - -namespace detail { namespace dragonbox { // Type-specific information that Dragonbox uses. @@ -1270,37 +1260,21 @@ template struct decimal_fp { int exponent; }; -template decimal_fp to_decimal(T x) FMT_NOEXCEPT; +template +FMT_API auto to_decimal(T x) FMT_NOEXCEPT -> decimal_fp; } // namespace dragonbox template -constexpr typename dragonbox::float_info::carrier_uint exponent_mask() { - using uint_type = typename dragonbox::float_info::carrier_uint; - return ((uint_type(1) << dragonbox::float_info::exponent_bits) - 1) +constexpr auto exponent_mask() -> + typename dragonbox::float_info::carrier_uint { + using uint = typename dragonbox::float_info::carrier_uint; + return ((uint(1) << dragonbox::float_info::exponent_bits) - 1) << dragonbox::float_info::significand_bits; } -// A floating-point presentation format. -enum class float_format : unsigned char { - general, // General: exponent notation or fixed point based on magnitude. - exp, // Exponent notation with the default precision of 6, e.g. 1.2e-3. - fixed, // Fixed point with the default precision of 6, e.g. 0.0012. - hex -}; - -struct float_specs { - int precision; - float_format format : 8; - sign_t sign : 8; - bool upper : 1; - bool locale : 1; - bool binary32 : 1; - bool use_grisu : 1; - bool showpoint : 1; -}; - // Writes the exponent exp in the form "[+-]d{2,3}" to buffer. -template It write_exponent(int exp, It it) { +template +FMT_CONSTEXPR auto write_exponent(int exp, It it) -> It { FMT_ASSERT(-10000 < exp && exp < 10000, "exponent out of range"); if (exp < 0) { *it++ = static_cast('-'); @@ -1309,185 +1283,42 @@ template It write_exponent(int exp, It it) { *it++ = static_cast('+'); } if (exp >= 100) { - const char* top = data::digits[exp / 100]; + const char* top = digits2(to_unsigned(exp / 100)); if (exp >= 1000) *it++ = static_cast(top[0]); *it++ = static_cast(top[1]); exp %= 100; } - const char* d = data::digits[exp]; + const char* d = digits2(to_unsigned(exp)); *it++ = static_cast(d[0]); *it++ = static_cast(d[1]); return it; } template -int format_float(T value, int precision, float_specs specs, buffer& buf); +FMT_HEADER_ONLY_CONSTEXPR20 auto format_float(T value, int precision, + float_specs specs, + buffer& buf) -> int; // Formats a floating-point number with snprintf. template -int snprintf_float(T value, int precision, float_specs specs, - buffer& buf); +auto snprintf_float(T value, int precision, float_specs specs, + buffer& buf) -> int; -template T promote_float(T value) { return value; } -inline double promote_float(float value) { return static_cast(value); } - -template -FMT_CONSTEXPR void handle_int_type_spec(char spec, Handler&& handler) { - switch (spec) { - case 0: - case 'd': - handler.on_dec(); - break; - case 'x': - case 'X': - handler.on_hex(); - break; - case 'b': - case 'B': - handler.on_bin(); - break; - case 'o': - handler.on_oct(); - break; -#ifdef FMT_DEPRECATED_N_SPECIFIER - case 'n': -#endif - case 'L': - handler.on_num(); - break; - case 'c': - handler.on_chr(); - break; - default: - handler.on_error(); - } +template constexpr auto promote_float(T value) -> T { + return value; } - -template -FMT_CONSTEXPR float_specs parse_float_type_spec( - const basic_format_specs& specs, ErrorHandler&& eh = {}) { - auto result = float_specs(); - result.showpoint = specs.alt; - switch (specs.type) { - case 0: - result.format = float_format::general; - result.showpoint |= specs.precision > 0; - break; - case 'G': - result.upper = true; - FMT_FALLTHROUGH; - case 'g': - result.format = float_format::general; - break; - case 'E': - result.upper = true; - FMT_FALLTHROUGH; - case 'e': - result.format = float_format::exp; - result.showpoint |= specs.precision != 0; - break; - case 'F': - result.upper = true; - FMT_FALLTHROUGH; - case 'f': - result.format = float_format::fixed; - result.showpoint |= specs.precision != 0; - break; - case 'A': - result.upper = true; - FMT_FALLTHROUGH; - case 'a': - result.format = float_format::hex; - break; -#ifdef FMT_DEPRECATED_N_SPECIFIER - case 'n': -#endif - case 'L': - result.locale = true; - break; - default: - eh.on_error("invalid type specifier"); - break; - } - return result; +constexpr auto promote_float(float value) -> double { + return static_cast(value); } -template -FMT_CONSTEXPR void handle_char_specs(const basic_format_specs* specs, - Handler&& handler) { - if (!specs) return handler.on_char(); - if (specs->type && specs->type != 'c') return handler.on_int(); - if (specs->align == align::numeric || specs->sign != sign::none || specs->alt) - handler.on_error("invalid format specifier for char"); - handler.on_char(); -} - -template -FMT_CONSTEXPR void handle_cstring_type_spec(Char spec, Handler&& handler) { - if (spec == 0 || spec == 's') - handler.on_string(); - else if (spec == 'p') - handler.on_pointer(); - else - handler.on_error("invalid type specifier"); -} - -template -FMT_CONSTEXPR void check_string_type_spec(Char spec, ErrorHandler&& eh) { - if (spec != 0 && spec != 's') eh.on_error("invalid type specifier"); -} - -template -FMT_CONSTEXPR void check_pointer_type_spec(Char spec, ErrorHandler&& eh) { - if (spec != 0 && spec != 'p') eh.on_error("invalid type specifier"); -} - -template class int_type_checker : private ErrorHandler { - public: - FMT_CONSTEXPR explicit int_type_checker(ErrorHandler eh) : ErrorHandler(eh) {} - - FMT_CONSTEXPR void on_dec() {} - FMT_CONSTEXPR void on_hex() {} - FMT_CONSTEXPR void on_bin() {} - FMT_CONSTEXPR void on_oct() {} - FMT_CONSTEXPR void on_num() {} - FMT_CONSTEXPR void on_chr() {} - - FMT_CONSTEXPR void on_error() { - ErrorHandler::on_error("invalid type specifier"); - } -}; - -template -class char_specs_checker : public ErrorHandler { - private: - char type_; - - public: - FMT_CONSTEXPR char_specs_checker(char type, ErrorHandler eh) - : ErrorHandler(eh), type_(type) {} - - FMT_CONSTEXPR void on_int() { - handle_int_type_spec(type_, int_type_checker(*this)); - } - FMT_CONSTEXPR void on_char() {} -}; - -template -class cstring_type_checker : public ErrorHandler { - public: - FMT_CONSTEXPR explicit cstring_type_checker(ErrorHandler eh) - : ErrorHandler(eh) {} - - FMT_CONSTEXPR void on_string() {} - FMT_CONSTEXPR void on_pointer() {} -}; - template -FMT_NOINLINE OutputIt fill(OutputIt it, size_t n, const fill_t& fill) { +FMT_NOINLINE FMT_CONSTEXPR auto fill(OutputIt it, size_t n, + const fill_t& fill) -> OutputIt { auto fill_size = fill.size(); - if (fill_size == 1) return std::fill_n(it, n, fill[0]); - for (size_t i = 0; i < n; ++i) it = std::copy_n(fill.data(), fill_size, it); + if (fill_size == 1) return detail::fill_n(it, n, fill[0]); + auto data = fill.data(); + for (size_t i = 0; i < n; ++i) + it = copy_str(data, data + fill_size, it); return it; } @@ -1496,39 +1327,73 @@ FMT_NOINLINE OutputIt fill(OutputIt it, size_t n, const fill_t& fill) { // width: output display width in (terminal) column positions. template -inline OutputIt write_padded(OutputIt out, - const basic_format_specs& specs, size_t size, - size_t width, F&& f) { +FMT_CONSTEXPR auto write_padded(OutputIt out, + const basic_format_specs& specs, + size_t size, size_t width, F&& f) -> OutputIt { static_assert(align == align::left || align == align::right, ""); unsigned spec_width = to_unsigned(specs.width); size_t padding = spec_width > width ? spec_width - width : 0; - auto* shifts = align == align::left ? data::left_padding_shifts - : data::right_padding_shifts; + // Shifts are encoded as string literals because static constexpr is not + // supported in constexpr functions. + auto* shifts = align == align::left ? "\x1f\x1f\x00\x01" : "\x00\x1f\x00\x01"; size_t left_padding = padding >> shifts[specs.align]; + size_t right_padding = padding - left_padding; auto it = reserve(out, size + padding * specs.fill.size()); - it = fill(it, left_padding, specs.fill); + if (left_padding != 0) it = fill(it, left_padding, specs.fill); it = f(it); - it = fill(it, padding - left_padding, specs.fill); + if (right_padding != 0) it = fill(it, right_padding, specs.fill); return base_iterator(out, it); } template -inline OutputIt write_padded(OutputIt out, - const basic_format_specs& specs, size_t size, - F&& f) { +constexpr auto write_padded(OutputIt out, const basic_format_specs& specs, + size_t size, F&& f) -> OutputIt { return write_padded(out, specs, size, size, f); } +template +FMT_CONSTEXPR auto write_bytes(OutputIt out, string_view bytes, + const basic_format_specs& specs) + -> OutputIt { + return write_padded( + out, specs, bytes.size(), [bytes](reserve_iterator it) { + const char* data = bytes.data(); + return copy_str(data, data + bytes.size(), it); + }); +} + +template +auto write_ptr(OutputIt out, UIntPtr value, + const basic_format_specs* specs) -> OutputIt { + int num_digits = count_digits<4>(value); + auto size = to_unsigned(num_digits) + size_t(2); + auto write = [=](reserve_iterator it) { + *it++ = static_cast('0'); + *it++ = static_cast('x'); + return format_uint<4, Char>(it, value, num_digits); + }; + return specs ? write_padded(out, *specs, size, write) + : base_iterator(out, write(reserve(out, size))); +} + template -OutputIt write_bytes(OutputIt out, string_view bytes, - const basic_format_specs& specs) { - using iterator = remove_reference_t; - return write_padded(out, specs, bytes.size(), [bytes](iterator it) { - const char* data = bytes.data(); - return copy_str(data, data + bytes.size(), it); +FMT_CONSTEXPR auto write_char(OutputIt out, Char value, + const basic_format_specs& specs) + -> OutputIt { + return write_padded(out, specs, 1, [=](reserve_iterator it) { + *it++ = value; + return it; }); } +template +FMT_CONSTEXPR auto write(OutputIt out, Char value, + const basic_format_specs& specs, + locale_ref loc = {}) -> OutputIt { + return check_char_specs(specs) + ? write_char(out, value, specs) + : write(out, static_cast(value), specs, loc); +} // Data for write_int that doesn't depend on output iterator type. It is used to // avoid template code bloat. @@ -1536,9 +1401,9 @@ template struct write_int_data { size_t size; size_t padding; - write_int_data(int num_digits, string_view prefix, - const basic_format_specs& specs) - : size(prefix.size() + to_unsigned(num_digits)), padding(0) { + FMT_CONSTEXPR write_int_data(int num_digits, unsigned prefix, + const basic_format_specs& specs) + : size((prefix >> 24) + to_unsigned(num_digits)), padding(0) { if (specs.align == align::numeric) { auto width = to_unsigned(specs.width); if (width > size) { @@ -1546,7 +1411,7 @@ template struct write_int_data { size = width; } } else if (specs.precision > num_digits) { - size = prefix.size() + to_unsigned(specs.precision); + size = (prefix >> 24) + to_unsigned(specs.precision); padding = to_unsigned(specs.precision - num_digits); } } @@ -1554,183 +1419,280 @@ template struct write_int_data { // Writes an integer in the format // -// where are written by f(it). -template -OutputIt write_int(OutputIt out, int num_digits, string_view prefix, - const basic_format_specs& specs, F f) { +// where are written by write_digits(it). +// prefix contains chars in three lower bytes and the size in the fourth byte. +template +FMT_CONSTEXPR FMT_INLINE auto write_int(OutputIt out, int num_digits, + unsigned prefix, + const basic_format_specs& specs, + W write_digits) -> OutputIt { + // Slightly faster check for specs.width == 0 && specs.precision == -1. + if ((specs.width | (specs.precision + 1)) == 0) { + auto it = reserve(out, to_unsigned(num_digits) + (prefix >> 24)); + if (prefix != 0) { + for (unsigned p = prefix & 0xffffff; p != 0; p >>= 8) + *it++ = static_cast(p & 0xff); + } + return base_iterator(out, write_digits(it)); + } auto data = write_int_data(num_digits, prefix, specs); - using iterator = remove_reference_t; - return write_padded(out, specs, data.size, [=](iterator it) { - if (prefix.size() != 0) - it = copy_str(prefix.begin(), prefix.end(), it); - it = std::fill_n(it, data.padding, static_cast('0')); - return f(it); - }); + return write_padded( + out, specs, data.size, [=](reserve_iterator it) { + for (unsigned p = prefix & 0xffffff; p != 0; p >>= 8) + *it++ = static_cast(p & 0xff); + it = detail::fill_n(it, data.padding, static_cast('0')); + return write_digits(it); + }); } -template -OutputIt write(OutputIt out, basic_string_view s, - const basic_format_specs& specs) { +template class digit_grouping { + private: + thousands_sep_result sep_; + + struct next_state { + std::string::const_iterator group; + int pos; + }; + next_state initial_state() const { return {sep_.grouping.begin(), 0}; } + + // Returns the next digit group separator position. + int next(next_state& state) const { + if (!sep_.thousands_sep) return max_value(); + if (state.group == sep_.grouping.end()) + return state.pos += sep_.grouping.back(); + if (*state.group <= 0 || *state.group == max_value()) + return max_value(); + state.pos += *state.group++; + return state.pos; + } + + public: + explicit digit_grouping(locale_ref loc, bool localized = true) { + if (localized) + sep_ = thousands_sep(loc); + else + sep_.thousands_sep = Char(); + } + explicit digit_grouping(thousands_sep_result sep) : sep_(sep) {} + + Char separator() const { return sep_.thousands_sep; } + + int count_separators(int num_digits) const { + int count = 0; + auto state = initial_state(); + while (num_digits > next(state)) ++count; + return count; + } + + // Applies grouping to digits and write the output to out. + template + Out apply(Out out, basic_string_view digits) const { + auto num_digits = static_cast(digits.size()); + auto separators = basic_memory_buffer(); + separators.push_back(0); + auto state = initial_state(); + while (int i = next(state)) { + if (i >= num_digits) break; + separators.push_back(i); + } + for (int i = 0, sep_index = static_cast(separators.size() - 1); + i < num_digits; ++i) { + if (num_digits - i == separators[sep_index]) { + *out++ = separator(); + --sep_index; + } + *out++ = static_cast(digits[to_unsigned(i)]); + } + return out; + } +}; + +template +auto write_int_localized(OutputIt out, UInt value, unsigned prefix, + const basic_format_specs& specs, + const digit_grouping& grouping) -> OutputIt { + static_assert(std::is_same, UInt>::value, ""); + int num_digits = count_digits(value); + char digits[40]; + format_decimal(digits, value, num_digits); + unsigned size = to_unsigned((prefix != 0 ? 1 : 0) + num_digits + + grouping.count_separators(num_digits)); + return write_padded( + out, specs, size, size, [&](reserve_iterator it) { + if (prefix != 0) *it++ = static_cast(prefix); + return grouping.apply(it, string_view(digits, to_unsigned(num_digits))); + }); +} + +template +auto write_int_localized(OutputIt& out, UInt value, unsigned prefix, + const basic_format_specs& specs, locale_ref loc) + -> bool { + auto grouping = digit_grouping(loc); + out = write_int_localized(out, value, prefix, specs, grouping); + return true; +} + +FMT_CONSTEXPR inline void prefix_append(unsigned& prefix, unsigned value) { + prefix |= prefix != 0 ? value << 8 : value; + prefix += (1u + (value > 0xff ? 1 : 0)) << 24; +} + +template struct write_int_arg { + UInt abs_value; + unsigned prefix; +}; + +template +FMT_CONSTEXPR auto make_write_int_arg(T value, sign_t sign) + -> write_int_arg> { + auto prefix = 0u; + auto abs_value = static_cast>(value); + if (is_negative(value)) { + prefix = 0x01000000 | '-'; + abs_value = 0 - abs_value; + } else { + constexpr const unsigned prefixes[4] = {0, 0, 0x1000000u | '+', + 0x1000000u | ' '}; + prefix = prefixes[sign]; + } + return {abs_value, prefix}; +} + +template +FMT_CONSTEXPR FMT_INLINE auto write_int(OutputIt out, write_int_arg arg, + const basic_format_specs& specs, + locale_ref loc) -> OutputIt { + static_assert(std::is_same>::value, ""); + auto abs_value = arg.abs_value; + auto prefix = arg.prefix; + switch (specs.type) { + case presentation_type::none: + case presentation_type::dec: { + if (specs.localized && + write_int_localized(out, static_cast>(abs_value), + prefix, specs, loc)) { + return out; + } + auto num_digits = count_digits(abs_value); + return write_int( + out, num_digits, prefix, specs, [=](reserve_iterator it) { + return format_decimal(it, abs_value, num_digits).end; + }); + } + case presentation_type::hex_lower: + case presentation_type::hex_upper: { + bool upper = specs.type == presentation_type::hex_upper; + if (specs.alt) + prefix_append(prefix, unsigned(upper ? 'X' : 'x') << 8 | '0'); + int num_digits = count_digits<4>(abs_value); + return write_int( + out, num_digits, prefix, specs, [=](reserve_iterator it) { + return format_uint<4, Char>(it, abs_value, num_digits, upper); + }); + } + case presentation_type::bin_lower: + case presentation_type::bin_upper: { + bool upper = specs.type == presentation_type::bin_upper; + if (specs.alt) + prefix_append(prefix, unsigned(upper ? 'B' : 'b') << 8 | '0'); + int num_digits = count_digits<1>(abs_value); + return write_int(out, num_digits, prefix, specs, + [=](reserve_iterator it) { + return format_uint<1, Char>(it, abs_value, num_digits); + }); + } + case presentation_type::oct: { + int num_digits = count_digits<3>(abs_value); + // Octal prefix '0' is counted as a digit, so only add it if precision + // is not greater than the number of digits. + if (specs.alt && specs.precision <= num_digits && abs_value != 0) + prefix_append(prefix, '0'); + return write_int(out, num_digits, prefix, specs, + [=](reserve_iterator it) { + return format_uint<3, Char>(it, abs_value, num_digits); + }); + } + case presentation_type::chr: + return write_char(out, static_cast(abs_value), specs); + default: + throw_format_error("invalid type specifier"); + } + return out; +} +template +FMT_CONSTEXPR FMT_NOINLINE auto write_int_noinline( + OutputIt out, write_int_arg arg, const basic_format_specs& specs, + locale_ref loc) -> OutputIt { + return write_int(out, arg, specs, loc); +} +template ::value && + !std::is_same::value && + std::is_same>::value)> +FMT_CONSTEXPR FMT_INLINE auto write(OutputIt out, T value, + const basic_format_specs& specs, + locale_ref loc) -> OutputIt { + return write_int_noinline(out, make_write_int_arg(value, specs.sign), specs, + loc); +} +// An inlined version of write used in format string compilation. +template ::value && + !std::is_same::value && + !std::is_same>::value)> +FMT_CONSTEXPR FMT_INLINE auto write(OutputIt out, T value, + const basic_format_specs& specs, + locale_ref loc) -> OutputIt { + return write_int(out, make_write_int_arg(value, specs.sign), specs, loc); +} + +template +FMT_CONSTEXPR auto write(OutputIt out, basic_string_view s, + const basic_format_specs& specs) -> OutputIt { auto data = s.data(); auto size = s.size(); if (specs.precision >= 0 && to_unsigned(specs.precision) < size) size = code_point_index(s, to_unsigned(specs.precision)); - auto width = specs.width != 0 - ? count_code_points(basic_string_view(data, size)) - : 0; - using iterator = remove_reference_t; - return write_padded(out, specs, size, width, [=](iterator it) { - return copy_str(data, data + size, it); - }); + auto width = + specs.width != 0 ? compute_width(basic_string_view(data, size)) : 0; + return write_padded(out, specs, size, width, + [=](reserve_iterator it) { + return copy_str(data, data + size, it); + }); +} +template +FMT_CONSTEXPR auto write(OutputIt out, + basic_string_view> s, + const basic_format_specs& specs, locale_ref) + -> OutputIt { + check_string_type_spec(specs.type); + return write(out, s, specs); +} +template +FMT_CONSTEXPR auto write(OutputIt out, const Char* s, + const basic_format_specs& specs, locale_ref) + -> OutputIt { + return check_cstring_type_spec(specs.type) + ? write(out, basic_string_view(s), specs, {}) + : write_ptr(out, to_uintptr(s), &specs); } -// The handle_int_type_spec handler that writes an integer. -template struct int_writer { - OutputIt out; - locale_ref locale; - const basic_format_specs& specs; - UInt abs_value; - char prefix[4]; - unsigned prefix_size; - - using iterator = - remove_reference_t(), 0))>; - - string_view get_prefix() const { return string_view(prefix, prefix_size); } - - template - int_writer(OutputIt output, locale_ref loc, Int value, - const basic_format_specs& s) - : out(output), - locale(loc), - specs(s), - abs_value(static_cast(value)), - prefix_size(0) { - static_assert(std::is_same, UInt>::value, ""); - if (is_negative(value)) { - prefix[0] = '-'; - ++prefix_size; - abs_value = 0 - abs_value; - } else if (specs.sign != sign::none && specs.sign != sign::minus) { - prefix[0] = specs.sign == sign::plus ? '+' : ' '; - ++prefix_size; - } - } - - void on_dec() { - auto num_digits = count_digits(abs_value); - out = write_int( - out, num_digits, get_prefix(), specs, [this, num_digits](iterator it) { - return format_decimal(it, abs_value, num_digits).end; - }); - } - - void on_hex() { - if (specs.alt) { - prefix[prefix_size++] = '0'; - prefix[prefix_size++] = specs.type; - } - int num_digits = count_digits<4>(abs_value); - out = write_int(out, num_digits, get_prefix(), specs, - [this, num_digits](iterator it) { - return format_uint<4, Char>(it, abs_value, num_digits, - specs.type != 'x'); - }); - } - - void on_bin() { - if (specs.alt) { - prefix[prefix_size++] = '0'; - prefix[prefix_size++] = static_cast(specs.type); - } - int num_digits = count_digits<1>(abs_value); - out = write_int(out, num_digits, get_prefix(), specs, - [this, num_digits](iterator it) { - return format_uint<1, Char>(it, abs_value, num_digits); - }); - } - - void on_oct() { - int num_digits = count_digits<3>(abs_value); - if (specs.alt && specs.precision <= num_digits && abs_value != 0) { - // Octal prefix '0' is counted as a digit, so only add it if precision - // is not greater than the number of digits. - prefix[prefix_size++] = '0'; - } - out = write_int(out, num_digits, get_prefix(), specs, - [this, num_digits](iterator it) { - return format_uint<3, Char>(it, abs_value, num_digits); - }); - } - - enum { sep_size = 1 }; - - void on_num() { - std::string groups = grouping(locale); - if (groups.empty()) return on_dec(); - auto sep = thousands_sep(locale); - if (!sep) return on_dec(); - int num_digits = count_digits(abs_value); - int size = num_digits, n = num_digits; - std::string::const_iterator group = groups.cbegin(); - while (group != groups.cend() && n > *group && *group > 0 && - *group != max_value()) { - size += sep_size; - n -= *group; - ++group; - } - if (group == groups.cend()) size += sep_size * ((n - 1) / groups.back()); - char digits[40]; - format_decimal(digits, abs_value, num_digits); - basic_memory_buffer buffer; - size += static_cast(prefix_size); - const auto usize = to_unsigned(size); - buffer.resize(usize); - basic_string_view s(&sep, sep_size); - // Index of a decimal digit with the least significant digit having index 0. - int digit_index = 0; - group = groups.cbegin(); - auto p = buffer.data() + size - 1; - for (int i = num_digits - 1; i > 0; --i) { - *p-- = static_cast(digits[i]); - if (*group <= 0 || ++digit_index % *group != 0 || - *group == max_value()) - continue; - if (group + 1 != groups.cend()) { - digit_index = 0; - ++group; - } - std::uninitialized_copy(s.data(), s.data() + s.size(), - make_checked(p, s.size())); - p -= s.size(); - } - *p-- = static_cast(*digits); - if (prefix_size != 0) *p = static_cast('-'); - auto data = buffer.data(); - out = write_padded( - out, specs, usize, usize, - [=](iterator it) { return copy_str(data, data + size, it); }); - } - - void on_chr() { *out++ = static_cast(abs_value); } - - FMT_NORETURN void on_error() { - FMT_THROW(format_error("invalid type specifier")); - } -}; - template -OutputIt write_nonfinite(OutputIt out, bool isinf, - const basic_format_specs& specs, - const float_specs& fspecs) { +FMT_CONSTEXPR20 auto write_nonfinite(OutputIt out, bool isinf, + basic_format_specs specs, + const float_specs& fspecs) -> OutputIt { auto str = isinf ? (fspecs.upper ? "INF" : "inf") : (fspecs.upper ? "NAN" : "nan"); constexpr size_t str_size = 3; auto sign = fspecs.sign; auto size = str_size + (sign ? 1 : 0); - using iterator = remove_reference_t; - return write_padded(out, specs, size, [=](iterator it) { - if (sign) *it++ = static_cast(data::signs[sign]); + // Replace '0'-padding with space for non-finite values. + const bool is_zero_fill = + specs.fill.size() == 1 && *specs.fill.data() == static_cast('0'); + if (is_zero_fill) specs.fill[0] = static_cast(' '); + return write_padded(out, specs, size, [=](reserve_iterator it) { + if (sign) *it++ = detail::sign(sign); return copy_str(str, str + str_size, it); }); } @@ -1742,74 +1704,118 @@ struct big_decimal_fp { int exponent; }; -inline int get_significand_size(const big_decimal_fp& fp) { +constexpr auto get_significand_size(const big_decimal_fp& fp) -> int { return fp.significand_size; } template -inline int get_significand_size(const dragonbox::decimal_fp& fp) { +inline auto get_significand_size(const dragonbox::decimal_fp& fp) -> int { return count_digits(fp.significand); } template -inline OutputIt write_significand(OutputIt out, const char* significand, - int& significand_size) { +constexpr auto write_significand(OutputIt out, const char* significand, + int significand_size) -> OutputIt { return copy_str(significand, significand + significand_size, out); } template -inline OutputIt write_significand(OutputIt out, UInt significand, - int significand_size) { +inline auto write_significand(OutputIt out, UInt significand, + int significand_size) -> OutputIt { return format_decimal(out, significand, significand_size).end; } +template +FMT_CONSTEXPR20 auto write_significand(OutputIt out, T significand, + int significand_size, int exponent, + const Grouping& grouping) -> OutputIt { + if (!grouping.separator()) { + out = write_significand(out, significand, significand_size); + return detail::fill_n(out, exponent, static_cast('0')); + } + auto buffer = memory_buffer(); + write_significand(appender(buffer), significand, significand_size); + detail::fill_n(appender(buffer), exponent, '0'); + return grouping.apply(out, string_view(buffer.data(), buffer.size())); +} template ::value)> -inline Char* write_significand(Char* out, UInt significand, - int significand_size, int integral_size, - Char decimal_point) { +inline auto write_significand(Char* out, UInt significand, int significand_size, + int integral_size, Char decimal_point) -> Char* { if (!decimal_point) return format_decimal(out, significand, significand_size).end; - auto end = format_decimal(out + 1, significand, significand_size).end; - if (integral_size == 1) - out[0] = out[1]; - else - std::copy_n(out + 1, integral_size, out); - out[integral_size] = decimal_point; + out += significand_size + 1; + Char* end = out; + int floating_size = significand_size - integral_size; + for (int i = floating_size / 2; i > 0; --i) { + out -= 2; + copy2(out, digits2(significand % 100)); + significand /= 100; + } + if (floating_size % 2 != 0) { + *--out = static_cast('0' + significand % 10); + significand /= 10; + } + *--out = decimal_point; + format_decimal(out - integral_size, significand, integral_size); return end; } template >::value)> -inline OutputIt write_significand(OutputIt out, UInt significand, - int significand_size, int integral_size, - Char decimal_point) { +inline auto write_significand(OutputIt out, UInt significand, + int significand_size, int integral_size, + Char decimal_point) -> OutputIt { // Buffer is large enough to hold digits (digits10 + 1) and a decimal point. Char buffer[digits10() + 2]; auto end = write_significand(buffer, significand, significand_size, integral_size, decimal_point); - return detail::copy_str(buffer, end, out); + return detail::copy_str_noinline(buffer, end, out); } template -inline OutputIt write_significand(OutputIt out, const char* significand, - int significand_size, int integral_size, - Char decimal_point) { - out = detail::copy_str(significand, significand + integral_size, out); +FMT_CONSTEXPR auto write_significand(OutputIt out, const char* significand, + int significand_size, int integral_size, + Char decimal_point) -> OutputIt { + out = detail::copy_str_noinline(significand, + significand + integral_size, out); if (!decimal_point) return out; *out++ = decimal_point; - return detail::copy_str(significand + integral_size, - significand + significand_size, out); + return detail::copy_str_noinline(significand + integral_size, + significand + significand_size, out); } -template -OutputIt write_float(OutputIt out, const DecimalFP& fp, - const basic_format_specs& specs, float_specs fspecs, - Char decimal_point) { +template +FMT_CONSTEXPR20 auto write_significand(OutputIt out, T significand, + int significand_size, int integral_size, + Char decimal_point, + const Grouping& grouping) -> OutputIt { + if (!grouping.separator()) { + return write_significand(out, significand, significand_size, integral_size, + decimal_point); + } + auto buffer = basic_memory_buffer(); + write_significand(buffer_appender(buffer), significand, + significand_size, integral_size, decimal_point); + grouping.apply( + out, basic_string_view(buffer.data(), to_unsigned(integral_size))); + return detail::copy_str_noinline(buffer.data() + integral_size, + buffer.end(), out); +} + +template > +FMT_CONSTEXPR20 auto do_write_float(OutputIt out, const DecimalFP& fp, + const basic_format_specs& specs, + float_specs fspecs, locale_ref loc) + -> OutputIt { auto significand = fp.significand; int significand_size = get_significand_size(fp); - static const Char zero = static_cast('0'); + constexpr Char zero = static_cast('0'); auto sign = fspecs.sign; size_t size = to_unsigned(significand_size) + (sign ? 1 : 0); - using iterator = remove_reference_t; + using iterator = reserve_iterator; + + Char decimal_point = + fspecs.locale ? detail::decimal_point(loc) : static_cast('.'); int output_exp = fp.exponent + significand_size - 1; auto use_exp_format = [=]() { @@ -1824,7 +1830,8 @@ OutputIt write_float(OutputIt out, const DecimalFP& fp, if (use_exp_format()) { int num_zeros = 0; if (fspecs.showpoint) { - num_zeros = (std::max)(fspecs.precision - significand_size, 0); + num_zeros = fspecs.precision - significand_size; + if (num_zeros < 0) num_zeros = 0; size += to_unsigned(num_zeros); } else if (significand_size == 1) { decimal_point = Char(); @@ -1836,11 +1843,11 @@ OutputIt write_float(OutputIt out, const DecimalFP& fp, size += to_unsigned((decimal_point ? 1 : 0) + 2 + exp_digits); char exp_char = fspecs.upper ? 'E' : 'e'; auto write = [=](iterator it) { - if (sign) *it++ = static_cast(data::signs[sign]); + if (sign) *it++ = detail::sign(sign); // Insert a decimal point after the first digit and add an exponent. it = write_significand(it, significand, significand_size, 1, decimal_point); - if (num_zeros > 0) it = std::fill_n(it, num_zeros, zero); + if (num_zeros > 0) it = detail::fill_n(it, num_zeros, zero); *it++ = static_cast(exp_char); return write_exponent(output_exp, it); }; @@ -1859,25 +1866,29 @@ OutputIt write_float(OutputIt out, const DecimalFP& fp, #endif if (fspecs.showpoint) { if (num_zeros <= 0 && fspecs.format != float_format::fixed) num_zeros = 1; - if (num_zeros > 0) size += to_unsigned(num_zeros); + if (num_zeros > 0) size += to_unsigned(num_zeros) + 1; } + auto grouping = Grouping(loc, fspecs.locale); + size += to_unsigned(grouping.count_separators(significand_size)); return write_padded(out, specs, size, [&](iterator it) { - if (sign) *it++ = static_cast(data::signs[sign]); - it = write_significand(it, significand, significand_size); - it = std::fill_n(it, fp.exponent, zero); + if (sign) *it++ = detail::sign(sign); + it = write_significand(it, significand, significand_size, + fp.exponent, grouping); if (!fspecs.showpoint) return it; *it++ = decimal_point; - return num_zeros > 0 ? std::fill_n(it, num_zeros, zero) : it; + return num_zeros > 0 ? detail::fill_n(it, num_zeros, zero) : it; }); } else if (exp > 0) { // 1234e-2 -> 12.34[0+] int num_zeros = fspecs.showpoint ? fspecs.precision - significand_size : 0; size += 1 + to_unsigned(num_zeros > 0 ? num_zeros : 0); + auto grouping = Grouping(loc, fspecs.locale); + size += to_unsigned(grouping.count_separators(significand_size)); return write_padded(out, specs, size, [&](iterator it) { - if (sign) *it++ = static_cast(data::signs[sign]); + if (sign) *it++ = detail::sign(sign); it = write_significand(it, significand, significand_size, exp, - decimal_point); - return num_zeros > 0 ? std::fill_n(it, num_zeros, zero) : it; + decimal_point, grouping); + return num_zeros > 0 ? detail::fill_n(it, num_zeros, zero) : it; }); } // 1234e-6 -> 0.001234 @@ -1886,37 +1897,109 @@ OutputIt write_float(OutputIt out, const DecimalFP& fp, fspecs.precision < num_zeros) { num_zeros = fspecs.precision; } - size += 2 + to_unsigned(num_zeros); + bool pointy = num_zeros != 0 || significand_size != 0 || fspecs.showpoint; + size += 1 + (pointy ? 1 : 0) + to_unsigned(num_zeros); return write_padded(out, specs, size, [&](iterator it) { - if (sign) *it++ = static_cast(data::signs[sign]); + if (sign) *it++ = detail::sign(sign); *it++ = zero; - if (num_zeros == 0 && significand_size == 0 && !fspecs.showpoint) return it; + if (!pointy) return it; *it++ = decimal_point; - it = std::fill_n(it, num_zeros, zero); + it = detail::fill_n(it, num_zeros, zero); return write_significand(it, significand, significand_size); }); } +template class fallback_digit_grouping { + public: + constexpr fallback_digit_grouping(locale_ref, bool) {} + + constexpr Char separator() const { return Char(); } + + constexpr int count_separators(int) const { return 0; } + + template + constexpr Out apply(Out out, basic_string_view) const { + return out; + } +}; + +template +FMT_CONSTEXPR20 auto write_float(OutputIt out, const DecimalFP& fp, + const basic_format_specs& specs, + float_specs fspecs, locale_ref loc) + -> OutputIt { + if (is_constant_evaluated()) { + return do_write_float>(out, fp, specs, fspecs, + loc); + } else { + return do_write_float(out, fp, specs, fspecs, loc); + } +} + +template ::value)> +FMT_CONSTEXPR20 bool isinf(T value) { + if (is_constant_evaluated()) { +#if defined(__cpp_if_constexpr) + if constexpr (std::numeric_limits::is_iec559) { + auto bits = detail::bit_cast(static_cast(value)); + constexpr auto significand_bits = + dragonbox::float_info::significand_bits; + return (bits & exponent_mask()) && + !(bits & ((uint64_t(1) << significand_bits) - 1)); + } +#endif + } + return std::isinf(value); +} + +template ::value)> +FMT_CONSTEXPR20 bool isfinite(T value) { + if (is_constant_evaluated()) { +#if defined(__cpp_if_constexpr) + if constexpr (std::numeric_limits::is_iec559) { + auto bits = detail::bit_cast(static_cast(value)); + return (bits & exponent_mask()) != exponent_mask(); + } +#endif + } + return std::isfinite(value); +} + +template ::value)> +FMT_INLINE FMT_CONSTEXPR bool signbit(T value) { + if (is_constant_evaluated()) { +#ifdef __cpp_if_constexpr + if constexpr (std::numeric_limits::is_iec559) { + auto bits = detail::bit_cast(static_cast(value)); + return (bits & (uint64_t(1) << (num_bits() - 1))) != 0; + } +#endif + } + return std::signbit(value); +} + template ::value)> -OutputIt write(OutputIt out, T value, basic_format_specs specs, - locale_ref loc = {}) { +FMT_CONSTEXPR20 auto write(OutputIt out, T value, + basic_format_specs specs, locale_ref loc = {}) + -> OutputIt { if (const_check(!is_supported_floating_point(value))) return out; float_specs fspecs = parse_float_type_spec(specs); fspecs.sign = specs.sign; - if (std::signbit(value)) { // value < 0 is false for NaN so use signbit. + if (detail::signbit(value)) { // value < 0 is false for NaN so use signbit. fspecs.sign = sign::minus; value = -value; } else if (fspecs.sign == sign::minus) { fspecs.sign = sign::none; } - if (!std::isfinite(value)) - return write_nonfinite(out, std::isinf(value), specs, fspecs); + if (!detail::isfinite(value)) + return write_nonfinite(out, detail::isinf(value), specs, fspecs); if (specs.align == align::numeric && fspecs.sign) { auto it = reserve(out, 1); - *it++ = static_cast(data::signs[fspecs.sign]); + *it++ = detail::sign(fspecs.sign); out = base_iterator(out, it); fspecs.sign = sign::none; if (specs.width != 0) --specs.width; @@ -1924,121 +2007,89 @@ OutputIt write(OutputIt out, T value, basic_format_specs specs, memory_buffer buffer; if (fspecs.format == float_format::hex) { - if (fspecs.sign) buffer.push_back(data::signs[fspecs.sign]); + if (fspecs.sign) buffer.push_back(detail::sign(fspecs.sign)); snprintf_float(promote_float(value), specs.precision, fspecs, buffer); - return write_bytes(out, {buffer.data(), buffer.size()}, specs); + return write_bytes(out, {buffer.data(), buffer.size()}, + specs); } - int precision = specs.precision >= 0 || !specs.type ? specs.precision : 6; + int precision = specs.precision >= 0 || specs.type == presentation_type::none + ? specs.precision + : 6; if (fspecs.format == float_format::exp) { if (precision == max_value()) - FMT_THROW(format_error("number is too big")); + throw_format_error("number is too big"); else ++precision; } if (const_check(std::is_same())) fspecs.binary32 = true; - fspecs.use_grisu = is_fast_float(); + if (!is_fast_float()) fspecs.fallback = true; int exp = format_float(promote_float(value), precision, fspecs, buffer); fspecs.precision = precision; - Char point = - fspecs.locale ? decimal_point(loc) : static_cast('.'); auto fp = big_decimal_fp{buffer.data(), static_cast(buffer.size()), exp}; - return write_float(out, fp, specs, fspecs, point); + return write_float(out, fp, specs, fspecs, loc); } template ::value)> -OutputIt write(OutputIt out, T value) { +FMT_CONSTEXPR20 auto write(OutputIt out, T value) -> OutputIt { + if (is_constant_evaluated()) { + return write(out, value, basic_format_specs()); + } + if (const_check(!is_supported_floating_point(value))) return out; using floaty = conditional_t::value, double, T>; - using uint_type = typename dragonbox::float_info::carrier_uint; - auto bits = bit_cast(value); + using uint = typename dragonbox::float_info::carrier_uint; + auto bits = bit_cast(value); auto fspecs = float_specs(); - auto sign_bit = bits & (uint_type(1) << (num_bits() - 1)); - if (sign_bit != 0) { + if (detail::signbit(value)) { fspecs.sign = sign::minus; value = -value; } - static const auto specs = basic_format_specs(); - uint_type mask = exponent_mask(); + constexpr auto specs = basic_format_specs(); + uint mask = exponent_mask(); if ((bits & mask) == mask) return write_nonfinite(out, std::isinf(value), specs, fspecs); auto dec = dragonbox::to_decimal(static_cast(value)); - return write_float(out, dec, specs, fspecs, static_cast('.')); + return write_float(out, dec, specs, fspecs, {}); } template ::value && !is_fast_float::value)> -inline OutputIt write(OutputIt out, T value) { +inline auto write(OutputIt out, T value) -> OutputIt { return write(out, value, basic_format_specs()); } template -OutputIt write_char(OutputIt out, Char value, - const basic_format_specs& specs) { - using iterator = remove_reference_t; - return write_padded(out, specs, 1, [=](iterator it) { - *it++ = value; - return it; - }); -} - -template -OutputIt write_ptr(OutputIt out, UIntPtr value, - const basic_format_specs* specs) { - int num_digits = count_digits<4>(value); - auto size = to_unsigned(num_digits) + size_t(2); - using iterator = remove_reference_t; - auto write = [=](iterator it) { - *it++ = static_cast('0'); - *it++ = static_cast('x'); - return format_uint<4, Char>(it, value, num_digits); - }; - return specs ? write_padded(out, *specs, size, write) - : base_iterator(out, write(reserve(out, size))); -} - -template struct is_integral : std::is_integral {}; -template <> struct is_integral : std::true_type {}; -template <> struct is_integral : std::true_type {}; - -template -OutputIt write(OutputIt out, monostate) { +auto write(OutputIt out, monostate, basic_format_specs = {}, + locale_ref = {}) -> OutputIt { FMT_ASSERT(false, ""); return out; } -template ::value)> -OutputIt write(OutputIt out, string_view value) { - auto it = reserve(out, value.size()); - it = copy_str(value.begin(), value.end(), it); - return base_iterator(out, it); -} - template -OutputIt write(OutputIt out, basic_string_view value) { +FMT_CONSTEXPR auto write(OutputIt out, basic_string_view value) + -> OutputIt { auto it = reserve(out, value.size()); - it = std::copy(value.begin(), value.end(), it); + it = copy_str_noinline(value.begin(), value.end(), it); return base_iterator(out, it); } -template -buffer_appender write(buffer_appender out, - basic_string_view value) { - get_container(out).append(value.begin(), value.end()); - return out; +template ::value)> +constexpr auto write(OutputIt out, const T& value) -> OutputIt { + return write(out, to_string_view(value)); } template ::value && !std::is_same::value && !std::is_same::value)> -OutputIt write(OutputIt out, T value) { +FMT_CONSTEXPR auto write(OutputIt out, T value) -> OutputIt { auto abs_value = static_cast>(value); bool negative = is_negative(value); // Don't do -abs_value since it trips unsigned-integer-overflow sanitizer. @@ -2056,336 +2107,130 @@ OutputIt write(OutputIt out, T value) { return base_iterator(out, it); } -template -OutputIt write(OutputIt out, bool value) { - return write(out, string_view(value ? "true" : "false")); +// FMT_ENABLE_IF() condition separated to workaround an MSVC bug. +template < + typename Char, typename OutputIt, typename T, + bool check = + std::is_enum::value && !std::is_same::value && + mapped_type_constant>::value != + type::custom_type, + FMT_ENABLE_IF(check)> +FMT_CONSTEXPR auto write(OutputIt out, T value) -> OutputIt { + return write( + out, static_cast::type>(value)); +} + +template ::value)> +FMT_CONSTEXPR auto write(OutputIt out, T value, + const basic_format_specs& specs = {}, + locale_ref = {}) -> OutputIt { + return specs.type != presentation_type::none && + specs.type != presentation_type::string + ? write(out, value ? 1 : 0, specs, {}) + : write_bytes(out, value ? "true" : "false", specs); } template -OutputIt write(OutputIt out, Char value) { +FMT_CONSTEXPR auto write(OutputIt out, Char value) -> OutputIt { auto it = reserve(out, 1); *it++ = value; return base_iterator(out, it); } template -OutputIt write(OutputIt out, const Char* value) { +FMT_CONSTEXPR_CHAR_TRAITS auto write(OutputIt out, const Char* value) + -> OutputIt { if (!value) { - FMT_THROW(format_error("string pointer is null")); + throw_format_error("string pointer is null"); } else { - auto length = std::char_traits::length(value); - out = write(out, basic_string_view(value, length)); + out = write(out, basic_string_view(value)); } return out; } -template -OutputIt write(OutputIt out, const void* value) { - return write_ptr(out, to_uintptr(value), nullptr); +template ::value)> +auto write(OutputIt out, const T* value, + const basic_format_specs& specs = {}, locale_ref = {}) + -> OutputIt { + check_pointer_type_spec(specs.type, error_handler()); + return write_ptr(out, to_uintptr(value), &specs); } -template -auto write(OutputIt out, const T& value) -> typename std::enable_if< - mapped_type_constant>::value == - type::custom_type, - OutputIt>::type { - using context_type = basic_format_context; +// A write overload that handles implicit conversions. +template > +FMT_CONSTEXPR auto write(OutputIt out, const T& value) -> enable_if_t< + std::is_class::value && !is_string::value && + !std::is_same::value && + !std::is_same().map(value))>::value, + OutputIt> { + return write(out, arg_mapper().map(value)); +} + +template > +FMT_CONSTEXPR auto write(OutputIt out, const T& value) + -> enable_if_t::value == type::custom_type, + OutputIt> { using formatter_type = - conditional_t::value, - typename context_type::template formatter_type, + conditional_t::value, + typename Context::template formatter_type, fallback_formatter>; - context_type ctx(out, {}, {}); + auto ctx = Context(out, {}, {}); return formatter_type().format(value, ctx); } // An argument visitor that formats the argument and writes it via the output // iterator. It's a class and not a generic lambda for compatibility with C++11. -template struct default_arg_formatter { - using context = basic_format_context; +template struct default_arg_formatter { + using iterator = buffer_appender; + using context = buffer_context; - OutputIt out; + iterator out; basic_format_args args; locale_ref loc; - template OutputIt operator()(T value) { + template auto operator()(T value) -> iterator { return write(out, value); } - - OutputIt operator()(typename basic_format_arg::handle handle) { + auto operator()(typename basic_format_arg::handle h) -> iterator { basic_format_parse_context parse_ctx({}); - basic_format_context format_ctx(out, args, loc); - handle.format(parse_ctx, format_ctx); + context format_ctx(out, args, loc); + h.format(parse_ctx, format_ctx); return format_ctx.out(); } }; -template -class arg_formatter_base { - public: - using iterator = OutputIt; - using char_type = Char; - using format_specs = basic_format_specs; +template struct arg_formatter { + using iterator = buffer_appender; + using context = buffer_context; - private: - iterator out_; - locale_ref locale_; - format_specs* specs_; + iterator out; + const basic_format_specs& specs; + locale_ref locale; - // Attempts to reserve space for n extra characters in the output range. - // Returns a pointer to the reserved range or a reference to out_. - auto reserve(size_t n) -> decltype(detail::reserve(out_, n)) { - return detail::reserve(out_, n); + template + FMT_CONSTEXPR FMT_INLINE auto operator()(T value) -> iterator { + return detail::write(out, value, specs, locale); } - - using reserve_iterator = remove_reference_t(), 0))>; - - template void write_int(T value, const format_specs& spec) { - using uint_type = uint32_or_64_or_128_t; - int_writer w(out_, locale_, value, spec); - handle_int_type_spec(spec.type, w); - out_ = w.out; - } - - void write(char value) { - auto&& it = reserve(1); - *it++ = value; - } - - template ::value)> - void write(Ch value) { - out_ = detail::write(out_, value); - } - - void write(string_view value) { - auto&& it = reserve(value.size()); - it = copy_str(value.begin(), value.end(), it); - } - void write(wstring_view value) { - static_assert(std::is_same::value, ""); - auto&& it = reserve(value.size()); - it = std::copy(value.begin(), value.end(), it); - } - - template - void write(const Ch* s, size_t size, const format_specs& specs) { - auto width = specs.width != 0 - ? count_code_points(basic_string_view(s, size)) - : 0; - out_ = write_padded(out_, specs, size, width, [=](reserve_iterator it) { - return copy_str(s, s + size, it); - }); - } - - template - void write(basic_string_view s, const format_specs& specs = {}) { - out_ = detail::write(out_, s, specs); - } - - void write_pointer(const void* p) { - out_ = write_ptr(out_, to_uintptr(p), specs_); - } - - struct char_spec_handler : ErrorHandler { - arg_formatter_base& formatter; - Char value; - - char_spec_handler(arg_formatter_base& f, Char val) - : formatter(f), value(val) {} - - void on_int() { - // char is only formatted as int if there are specs. - formatter.write_int(static_cast(value), *formatter.specs_); - } - void on_char() { - if (formatter.specs_) - formatter.out_ = write_char(formatter.out_, value, *formatter.specs_); - else - formatter.write(value); - } - }; - - struct cstring_spec_handler : error_handler { - arg_formatter_base& formatter; - const Char* value; - - cstring_spec_handler(arg_formatter_base& f, const Char* val) - : formatter(f), value(val) {} - - void on_string() { formatter.write(value); } - void on_pointer() { formatter.write_pointer(value); } - }; - - protected: - iterator out() { return out_; } - format_specs* specs() { return specs_; } - - void write(bool value) { - if (specs_) - write(string_view(value ? "true" : "false"), *specs_); - else - out_ = detail::write(out_, value); - } - - void write(const Char* value) { - if (!value) { - FMT_THROW(format_error("string pointer is null")); - } else { - auto length = std::char_traits::length(value); - basic_string_view sv(value, length); - specs_ ? write(sv, *specs_) : write(sv); - } - } - - public: - arg_formatter_base(OutputIt out, format_specs* s, locale_ref loc) - : out_(out), locale_(loc), specs_(s) {} - - iterator operator()(monostate) { - FMT_ASSERT(false, "invalid argument type"); - return out_; - } - - template ::value)> - FMT_INLINE iterator operator()(T value) { - if (specs_) - write_int(value, *specs_); - else - out_ = detail::write(out_, value); - return out_; - } - - iterator operator()(Char value) { - handle_char_specs(specs_, - char_spec_handler(*this, static_cast(value))); - return out_; - } - - iterator operator()(bool value) { - if (specs_ && specs_->type) return (*this)(value ? 1 : 0); - write(value != 0); - return out_; - } - - template ::value)> - iterator operator()(T value) { - auto specs = specs_ ? *specs_ : format_specs(); - if (const_check(is_supported_floating_point(value))) - out_ = detail::write(out_, value, specs, locale_); - else - FMT_ASSERT(false, "unsupported float argument type"); - return out_; - } - - iterator operator()(const Char* value) { - if (!specs_) return write(value), out_; - handle_cstring_type_spec(specs_->type, cstring_spec_handler(*this, value)); - return out_; - } - - iterator operator()(basic_string_view value) { - if (specs_) { - check_string_type_spec(specs_->type, error_handler()); - write(value, *specs_); - } else { - write(value); - } - return out_; - } - - iterator operator()(const void* value) { - if (specs_) check_pointer_type_spec(specs_->type, error_handler()); - write_pointer(value); - return out_; + auto operator()(typename basic_format_arg::handle) -> iterator { + // User-defined types are handled separately because they require access + // to the parse context. + return out; } }; -/** The default argument formatter. */ -template -class arg_formatter : public arg_formatter_base { - private: - using char_type = Char; - using base = arg_formatter_base; - using context_type = basic_format_context; +template struct custom_formatter { + basic_format_parse_context& parse_ctx; + buffer_context& ctx; - context_type& ctx_; - basic_format_parse_context* parse_ctx_; - const Char* ptr_; - - public: - using iterator = typename base::iterator; - using format_specs = typename base::format_specs; - - /** - \rst - Constructs an argument formatter object. - *ctx* is a reference to the formatting context, - *specs* contains format specifier information for standard argument types. - \endrst - */ - explicit arg_formatter( - context_type& ctx, - basic_format_parse_context* parse_ctx = nullptr, - format_specs* specs = nullptr, const Char* ptr = nullptr) - : base(ctx.out(), specs, ctx.locale()), - ctx_(ctx), - parse_ctx_(parse_ctx), - ptr_(ptr) {} - - using base::operator(); - - /** Formats an argument of a user-defined type. */ - iterator operator()(typename basic_format_arg::handle handle) { - if (ptr_) advance_to(*parse_ctx_, ptr_); - handle.format(*parse_ctx_, ctx_); - return ctx_.out(); + void operator()( + typename basic_format_arg>::handle h) const { + h.format(parse_ctx, ctx); } -}; - -template FMT_CONSTEXPR bool is_name_start(Char c) { - return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || '_' == c; -} - -// Parses the range [begin, end) as an unsigned integer. This function assumes -// that the range is non-empty and the first character is a digit. -template -FMT_CONSTEXPR int parse_nonnegative_int(const Char*& begin, const Char* end, - ErrorHandler&& eh) { - FMT_ASSERT(begin != end && '0' <= *begin && *begin <= '9', ""); - unsigned value = 0; - // Convert to unsigned to prevent a warning. - constexpr unsigned max_int = max_value(); - unsigned big = max_int / 10; - do { - // Check for overflow. - if (value > big) { - value = max_int + 1; - break; - } - value = value * 10 + unsigned(*begin - '0'); - ++begin; - } while (begin != end && '0' <= *begin && *begin <= '9'); - if (value > max_int) eh.on_error("number is too big"); - return static_cast(value); -} - -template class custom_formatter { - private: - using char_type = typename Context::char_type; - - basic_format_parse_context& parse_ctx_; - Context& ctx_; - - public: - explicit custom_formatter(basic_format_parse_context& parse_ctx, - Context& ctx) - : parse_ctx_(parse_ctx), ctx_(ctx) {} - - void operator()(typename basic_format_arg::handle h) const { - h.format(parse_ctx_, ctx_); - } - template void operator()(T) const {} }; @@ -2400,13 +2245,13 @@ template class width_checker { explicit FMT_CONSTEXPR width_checker(ErrorHandler& eh) : handler_(eh) {} template ::value)> - FMT_CONSTEXPR unsigned long long operator()(T value) { + FMT_CONSTEXPR auto operator()(T value) -> unsigned long long { if (is_negative(value)) handler_.on_error("negative width"); return static_cast(value); } template ::value)> - FMT_CONSTEXPR unsigned long long operator()(T) { + FMT_CONSTEXPR auto operator()(T) -> unsigned long long { handler_.on_error("width is not integer"); return 0; } @@ -2420,13 +2265,13 @@ template class precision_checker { explicit FMT_CONSTEXPR precision_checker(ErrorHandler& eh) : handler_(eh) {} template ::value)> - FMT_CONSTEXPR unsigned long long operator()(T value) { + FMT_CONSTEXPR auto operator()(T value) -> unsigned long long { if (is_negative(value)) handler_.on_error("negative precision"); return static_cast(value); } template ::value)> - FMT_CONSTEXPR unsigned long long operator()(T) { + FMT_CONSTEXPR auto operator()(T) -> unsigned long long { handler_.on_error("precision is not integer"); return 0; } @@ -2435,148 +2280,50 @@ template class precision_checker { ErrorHandler& handler_; }; -// A format specifier handler that sets fields in basic_format_specs. -template class specs_setter { - public: - explicit FMT_CONSTEXPR specs_setter(basic_format_specs& specs) - : specs_(specs) {} - - FMT_CONSTEXPR specs_setter(const specs_setter& other) - : specs_(other.specs_) {} - - FMT_CONSTEXPR void on_align(align_t align) { specs_.align = align; } - FMT_CONSTEXPR void on_fill(basic_string_view fill) { - specs_.fill = fill; - } - FMT_CONSTEXPR void on_plus() { specs_.sign = sign::plus; } - FMT_CONSTEXPR void on_minus() { specs_.sign = sign::minus; } - FMT_CONSTEXPR void on_space() { specs_.sign = sign::space; } - FMT_CONSTEXPR void on_hash() { specs_.alt = true; } - - FMT_CONSTEXPR void on_zero() { - specs_.align = align::numeric; - specs_.fill[0] = Char('0'); - } - - FMT_CONSTEXPR void on_width(int width) { specs_.width = width; } - FMT_CONSTEXPR void on_precision(int precision) { - specs_.precision = precision; - } - FMT_CONSTEXPR void end_precision() {} - - FMT_CONSTEXPR void on_type(Char type) { - specs_.type = static_cast(type); - } - - protected: - basic_format_specs& specs_; -}; - -template class numeric_specs_checker { - public: - FMT_CONSTEXPR numeric_specs_checker(ErrorHandler& eh, detail::type arg_type) - : error_handler_(eh), arg_type_(arg_type) {} - - FMT_CONSTEXPR void require_numeric_argument() { - if (!is_arithmetic_type(arg_type_)) - error_handler_.on_error("format specifier requires numeric argument"); - } - - FMT_CONSTEXPR void check_sign() { - require_numeric_argument(); - if (is_integral_type(arg_type_) && arg_type_ != type::int_type && - arg_type_ != type::long_long_type && arg_type_ != type::char_type) { - error_handler_.on_error("format specifier requires signed argument"); - } - } - - FMT_CONSTEXPR void check_precision() { - if (is_integral_type(arg_type_) || arg_type_ == type::pointer_type) - error_handler_.on_error("precision not allowed for this argument type"); - } - - private: - ErrorHandler& error_handler_; - detail::type arg_type_; -}; - -// A format specifier handler that checks if specifiers are consistent with the -// argument type. -template class specs_checker : public Handler { - private: - numeric_specs_checker checker_; - - // Suppress an MSVC warning about using this in initializer list. - FMT_CONSTEXPR Handler& error_handler() { return *this; } - - public: - FMT_CONSTEXPR specs_checker(const Handler& handler, detail::type arg_type) - : Handler(handler), checker_(error_handler(), arg_type) {} - - FMT_CONSTEXPR specs_checker(const specs_checker& other) - : Handler(other), checker_(error_handler(), other.arg_type_) {} - - FMT_CONSTEXPR void on_align(align_t align) { - if (align == align::numeric) checker_.require_numeric_argument(); - Handler::on_align(align); - } - - FMT_CONSTEXPR void on_plus() { - checker_.check_sign(); - Handler::on_plus(); - } - - FMT_CONSTEXPR void on_minus() { - checker_.check_sign(); - Handler::on_minus(); - } - - FMT_CONSTEXPR void on_space() { - checker_.check_sign(); - Handler::on_space(); - } - - FMT_CONSTEXPR void on_hash() { - checker_.require_numeric_argument(); - Handler::on_hash(); - } - - FMT_CONSTEXPR void on_zero() { - checker_.require_numeric_argument(); - Handler::on_zero(); - } - - FMT_CONSTEXPR void end_precision() { checker_.check_precision(); } -}; - template