255 lines
3.9 KiB
C++
255 lines
3.9 KiB
C++
/*
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* Copyright (C) 2014 Patrick Mours
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#pragma once
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#include <cstdint>
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#include <string>
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#include <vector>
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#include <cstdint>
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namespace reshadefx
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{
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/// <summary>
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/// Structure which keeps track of a code location.
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/// </summary>
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struct location
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{
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location() : line(1), column(1) {}
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explicit location(uint32_t line, uint32_t column = 1) : line(line), column(column) {}
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explicit location(std::string source, uint32_t line, uint32_t column = 1) : source(std::move(source)), line(line), column(column) {}
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std::string source;
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uint32_t line, column;
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};
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/// <summary>
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/// A collection of identifiers for various possible tokens.
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/// </summary>
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enum class tokenid
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{
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unknown = -1,
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end_of_file = 0,
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end_of_line = '\n',
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// operators
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space = ' ',
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exclaim = '!',
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hash = '#',
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dollar = '$',
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percent = '%',
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ampersand = '&',
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parenthesis_open = '(',
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parenthesis_close = ')',
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star = '*',
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plus = '+',
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comma = ',',
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minus = '-',
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dot = '.',
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slash = '/',
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colon = ':',
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semicolon = ';',
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less = '<',
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equal = '=',
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greater = '>',
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question = '?',
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at = '@',
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bracket_open = '[',
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backslash = '\\',
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bracket_close = ']',
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caret = '^',
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brace_open = '{',
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pipe = '|',
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brace_close = '}',
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tilde = '~',
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exclaim_equal = 256 /* != */,
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percent_equal /* %= */,
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ampersand_ampersand /* && */,
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ampersand_equal /* &= */,
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star_equal /* *= */,
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plus_plus /* ++*/,
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plus_equal /* += */,
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minus_minus /* -- */,
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minus_equal /* -= */,
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arrow /* -> */,
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ellipsis /* ... */,
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slash_equal /* /= */,
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colon_colon /* :: */,
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less_less_equal /* <<= */,
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less_less /* << */,
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less_equal /* <= */,
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equal_equal /* == */,
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greater_greater_equal /* >>= */,
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greater_greater /* >> */,
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greater_equal /* >= */,
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caret_equal /* ^= */,
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pipe_equal /* |= */,
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pipe_pipe /* || */,
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// identifiers
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reserved,
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identifier,
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// literals
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true_literal,
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false_literal,
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int_literal,
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uint_literal,
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float_literal,
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double_literal,
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string_literal,
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// keywords
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namespace_,
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struct_,
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technique,
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pass,
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for_,
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while_,
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do_,
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if_,
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else_,
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switch_,
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case_,
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default_,
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break_,
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continue_,
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return_,
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discard_,
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extern_,
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static_,
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uniform_,
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volatile_,
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precise,
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groupshared,
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in,
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out,
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inout,
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const_,
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linear,
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noperspective,
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centroid,
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nointerpolation,
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void_,
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bool_,
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bool2,
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bool3,
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bool4,
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bool2x2,
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bool2x3,
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bool2x4,
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bool3x2,
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bool3x3,
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bool3x4,
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bool4x2,
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bool4x3,
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bool4x4,
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int_,
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int2,
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int3,
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int4,
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int2x2,
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int2x3,
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int2x4,
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int3x2,
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int3x3,
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int3x4,
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int4x2,
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int4x3,
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int4x4,
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min16int,
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min16int2,
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min16int3,
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min16int4,
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uint_,
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uint2,
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uint3,
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uint4,
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uint2x2,
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uint2x3,
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uint2x4,
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uint3x2,
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uint3x3,
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uint3x4,
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uint4x2,
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uint4x3,
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uint4x4,
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min16uint,
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min16uint2,
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min16uint3,
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min16uint4,
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float_,
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float2,
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float3,
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float4,
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float2x2,
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float2x3,
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float2x4,
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float3x2,
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float3x3,
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float3x4,
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float4x2,
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float4x3,
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float4x4,
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min16float,
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min16float2,
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min16float3,
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min16float4,
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vector,
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matrix,
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string_,
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texture1d,
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texture2d,
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texture3d,
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sampler1d,
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sampler2d,
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sampler3d,
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storage1d,
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storage2d,
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storage3d,
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// preprocessor directives
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hash_def,
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hash_undef,
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hash_if,
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hash_ifdef,
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hash_ifndef,
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hash_else,
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hash_elif,
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hash_endif,
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hash_error,
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hash_warning,
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hash_pragma,
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hash_include,
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hash_unknown,
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single_line_comment,
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multi_line_comment,
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};
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/// <summary>
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/// A structure describing a single token in the input string.
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/// </summary>
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struct token
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{
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tokenid id;
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reshadefx::location location;
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size_t offset, length;
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union
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{
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int literal_as_int;
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unsigned int literal_as_uint;
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float literal_as_float;
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double literal_as_double;
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};
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std::string literal_as_string;
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operator tokenid() const { return id; }
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static std::string id_to_name(tokenid id);
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};
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}
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