mirror of https://github.com/bsnes-emu/bsnes.git
90 lines
2.1 KiB
C++
90 lines
2.1 KiB
C++
#pragma once
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#include <nall/array-span.hpp>
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#include <nall/array-view.hpp>
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#include <nall/range.hpp>
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#include <nall/view.hpp>
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namespace nall {
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template<typename T> struct array;
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//usage: int x[256] => array<int[256]> x
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template<typename T, uint Size> struct array<T[Size]> {
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array() = default;
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array(const initializer_list<T>& source) {
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uint index = 0;
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for(auto& value : source) {
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operator[](index++) = value;
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}
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}
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operator array_span<T>() {
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return {data(), size()};
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}
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operator array_view<T>() const {
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return {data(), size()};
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}
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alwaysinline auto operator[](uint index) -> T& {
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#ifdef DEBUG
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struct out_of_bounds {};
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if(index >= Size) throw out_of_bounds{};
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#endif
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return values[index];
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}
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alwaysinline auto operator[](uint index) const -> const T& {
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#ifdef DEBUG
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struct out_of_bounds {};
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if(index >= Size) throw out_of_bounds{};
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#endif
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return values[index];
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}
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alwaysinline auto operator()(uint index, const T& fallback = {}) const -> const T& {
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if(index >= Size) return fallback;
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return values[index];
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}
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auto fill(const T& fill = {}) -> array& {
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for(auto& value : values) value = fill;
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return *this;
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}
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auto data() -> T* { return values; }
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auto data() const -> const T* { return values; }
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auto size() const -> uint { return Size; }
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auto begin() -> T* { return &values[0]; }
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auto end() -> T* { return &values[Size]; }
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auto begin() const -> const T* { return &values[0]; }
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auto end() const -> const T* { return &values[Size]; }
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private:
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T values[Size];
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};
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template<typename T, T... p> auto from_array(uint index) -> T {
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static const array<T[sizeof...(p)]> table{p...};
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struct out_of_bounds {};
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#if defined(DEBUG)
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if(index >= sizeof...(p)) throw out_of_bounds{};
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#endif
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return table[index];
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}
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template<int64_t... p> auto from_array(uint index) -> int64_t {
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static const array<int64_t[sizeof...(p)]> table{p...};
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struct out_of_bounds {};
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#if defined(DEBUG)
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if(index >= sizeof...(p)) throw out_of_bounds{};
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#endif
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return table[index];
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}
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}
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