mirror of
https://github.com/winterknife/SILVERPICK
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winterknife
79 lines
2.9 KiB
C++
79 lines
2.9 KiB
C++
// ========================================================================
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// File: StackString.h
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//
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// Author: winterknife
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//
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// Description: This header file contains inline routines to create
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// string literals that are stored on the program stack
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// using template metaprogramming
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//
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// Modifications:
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// 2025-08-14 Created
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// 2025-08-26 Updated
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// ========================================================================
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// ========================================================================
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// Header guards
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// ========================================================================
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#pragma once
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// ========================================================================
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// Includes
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// ========================================================================
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#include <array>
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#include <sal.h>
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// ========================================================================
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// Macros
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// ========================================================================
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#pragma region MACROS
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// Macro to build a stack string
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#define STACK_STRING(Name, String) auto Name = String##_stackstring
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#pragma endregion
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// ========================================================================
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// Inline routines
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// ========================================================================
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#pragma region INLINES
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// Original implementation: https://godbolt.org/z/5hrKvsY85
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// Author: Can Bölük (@_can1357)
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/// @brief Construct a stack string character-by-character using recursion to unpack the template parameter pack
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/// @tparam Type Type template parameter that acts as a placeholder for the type of character literals
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/// @tparam First Non-type template parameter representing the leading character in the sequence
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/// @tparam ...Rest Non-type template parameter pack consisting of a sequence of characters
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/// @param ptyString Pointer to a character in the std::array representing the stack string
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template <typename Type, Type First, Type... Rest>
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__attribute__((always_inline)) inline void store_character(
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_In_ volatile Type* ptyString
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) {
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*ptyString++ = First;
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if constexpr(sizeof...(Rest) != 0) {
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store_character<Type, Rest...>(ptyString);
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}
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}
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wpedantic"
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/// @brief Literal operator template to create a compile-time user-defined string literal that is stored on the program stack
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/// @tparam Type Type template parameter that acts as a placeholder for the type of character literals
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/// @tparam ...Rest Non-type template parameter pack consisting of a sequence of characters
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/// @return Returns a std::array representing the stack string
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template <typename Type, Type... Rest>
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__attribute__((always_inline)) inline constexpr auto operator""_stackstring(
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void
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) {
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std::array<Type, sizeof...(Rest)+1> array = {};
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store_character<Type, Rest...>(array.data());
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return array;
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}
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#pragma GCC diagnostic pop
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#pragma endregion |