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macros.hpp
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#ifdef GEN_INTELLISENSE_DIRECTIVES
# pragma once
# include "platform.hpp"
#endif
#pragma region Macros
#if GEN_COMPILER_MSVC
#ifdef GEN_DYN_LINK
#ifdef GEN_DYN_EXPORT
#define GEN_API __declspec(dllexport)
#else
#define GEN_API __declspec(dllimport)
#endif
#else
#define GEN_API // Empty for static builds
#endif
#else
#ifdef GEN_DYN_LINK
#define GEN_API __attribute__((visibility("default")))
#else
#define GEN_API // Empty for static builds
#endif
#endif
#ifndef global
#define global static // Global variables
#endif
#ifndef internal
#define internal static // Internal linkage
#endif
#ifndef local_persist
#define local_persist static // Local Persisting variables
#endif
#ifndef bit
#define bit( Value ) ( 1 << Value )
#define bitfield_is_set( Type, Field, Mask ) ( (scast(Type, Mask) & scast(Type, Field)) == scast(Type, Mask) )
#endif
// Mainly intended for forcing the base library to utilize only C-valid constructs or type coercion
#ifndef GEN_C_LIKE_CPP
#define GEN_C_LIKE_CPP 0
#endif
#if GEN_COMPILER_CPP
# ifndef cast
# define cast( type, value ) (tmpl_cast<type>( value ))
# endif
#else
# ifndef cast
# define cast( type, value ) ( (type)(value) )
# endif
#endif
#if GEN_COMPILER_CPP
# ifndef ccast
# define ccast( type, value ) ( const_cast< type >( (value) ) )
# endif
# ifndef pcast
# define pcast( type, value ) ( * reinterpret_cast< type* >( & ( value ) ) )
# endif
# ifndef rcast
# define rcast( type, value ) reinterpret_cast< type >( value )
# endif
# ifndef scast
# define scast( type, value ) static_cast< type >( value )
# endif
#else
# ifndef ccast
# define ccast( type, value ) ( (type)(value) )
# endif
# ifndef pcast
# define pcast( type, value ) ( * (type*)(& value) )
# endif
# ifndef rcast
# define rcast( type, value ) ( (type)(value) )
# endif
# ifndef scast
# define scast( type, value ) ( (type)(value) )
# endif
#endif
#ifndef stringize
#define stringize_va( ... ) #__VA_ARGS__
#define stringize( ... ) stringize_va( __VA_ARGS__ )
#endif
#define src_line_str stringize(__LINE__)
#ifndef do_once
#define do_once() \
local_persist int __do_once_counter_##src_line_str = 0; \
for(; __do_once_counter_##src_line_str != 1; __do_once_counter_##src_line_str = 1 ) \
#define do_once_defer( expression ) \
local_persist int __do_once_counter_##src_line_str = 0; \
for(;__do_once_counter_##src_line_str != 1; __do_once_counter_##src_line_str = 1, (expression)) \
#define do_once_start \
do \
{ \
local_persist \
bool done = false; \
if ( done ) \
break; \
done = true;
#define do_once_end \
} \
while(0);
#endif
#ifndef labeled_scope_start
#define labeled_scope_start if ( false ) {
#define labeled_scope_end }
#endif
#ifndef compiler_decorated_func_name
# ifdef COMPILER_CLANG
# define compiler_decorated_func_name __PRETTY_NAME__
# elif defined(COMPILER_MSVC)
# define compiler_decorated_func_name __FUNCDNAME__
# endif
#endif
#ifndef num_args_impl
// This is essentially an arg couneter version of GEN_SELECT_ARG macros
// See section : _Generic function overloading for that usage (explains this heavier case)
#define num_args_impl( _0, \
_1, _2, _3, _4, _5, _6, _7, _8, _9, _10, \
_11, _12, _13, _14, _15, _16, _17, _18, _19, _20, \
_21, _22, _23, _24, _25, _26, _27, _28, _29, _30, \
_31, _32, _33, _34, _35, _36, _37, _38, _39, _40, \
_41, _42, _43, _44, _45, _46, _47, _48, _49, _50, \
_51, _52, _53, _54, _55, _56, _57, _58, _59, _60, \
_61, _62, _63, _64, _65, _66, _67, _68, _69, _70, \
_71, _72, _73, _74, _75, _76, _77, _78, _79, _80, \
_81, _82, _83, _84, _85, _86, _87, _88, _89, _90, \
_91, _92, _93, _94, _95, _96, _97, _98, _99, _100, \
N, ... \
) N
// ## deletes preceding comma if _VA_ARGS__ is empty (GCC, Clang)
#define num_args(...) \
num_args_impl(_, ## __VA_ARGS__, \
100, 99, 98, 97, 96, 95, 94, 93, 92, 91, \
90, 89, 88, 87, 86, 85, 84, 83, 82, 81, \
80, 79, 78, 77, 76, 75, 74, 73, 72, 71, \
70, 69, 68, 67, 66, 65, 64, 63, 62, 61, \
60, 59, 58, 57, 56, 55, 54, 53, 52, 51, \
50, 49, 48, 47, 46, 45, 44, 43, 42, 41, \
40, 39, 38, 37, 36, 35, 34, 33, 32, 31, \
30, 29, 28, 27, 26, 25, 24, 23, 22, 21, \
20, 19, 18, 17, 16, 15, 14, 13, 12, 11, \
10, 9, 8, 7, 6, 5, 4, 3, 2, 1, \
0 \
)
#endif
#ifndef clamp
#define clamp( x, lower, upper ) min( max( ( x ), ( lower ) ), ( upper ) )
#endif
#ifndef count_of
#define count_of( x ) ( ( size_of( x ) / size_of( 0 [ x ] ) ) / ( ( ssize )( ! ( size_of( x ) % size_of( 0 [ x ] ) ) ) ) )
#endif
#ifndef is_between
#define is_between( x, lower, upper ) ( ( ( lower ) <= ( x ) ) && ( ( x ) <= ( upper ) ) )
#endif
#ifndef size_of
#define size_of( x ) ( ssize )( sizeof( x ) )
#endif
#ifndef max
#define max( a, b ) ( (a > b) ? (a) : (b) )
#endif
#ifndef min
#define min( a, b ) ( (a < b) ? (a) : (b) )
#endif
#if GEN_COMPILER_MSVC || GEN_COMPILER_TINYC
# define offset_of( Type, element ) ( ( GEN_NS( ssize ) ) & ( ( ( Type* )0 )->element ) )
#else
# define offset_of( Type, element ) __builtin_offsetof( Type, element )
#endif
#ifndef forceinline
# if GEN_COMPILER_MSVC
# define forceinline __forceinline
# define neverinline __declspec( noinline )
# elif GEN_COMPILER_GCC
# define forceinline inline __attribute__((__always_inline__))
# define neverinline __attribute__( ( __noinline__ ) )
# elif GEN_COMPILER_CLANG
# if __has_attribute(__always_inline__)
# define forceinline inline __attribute__((__always_inline__))
# define neverinline __attribute__( ( __noinline__ ) )
# else
# define forceinline
# define neverinline
# endif
# else
# define forceinline
# define neverinline
# endif
#endif
#ifndef neverinline
# if GEN_COMPILER_MSVC
# define neverinline __declspec( noinline )
# elif GEN_COMPILER_GCC
# define neverinline __attribute__( ( __noinline__ ) )
# elif GEN_COMPILER_CLANG
# if __has_attribute(__always_inline__)
# define neverinline __attribute__( ( __noinline__ ) )
# else
# define neverinline
# endif
# else
# define neverinline
# endif
#endif
#if GEN_COMPILER_C
#ifndef static_assert
#undef static_assert
#if GEN_COMPILER_C && __STDC_VERSION__ >= 201112L
#define static_assert(condition, message) _Static_assert(condition, message)
#else
#define static_assert(condition, message) typedef char static_assertion_##__LINE__[(condition)?1:-1]
#endif
#endif
#endif
#if GEN_COMPILER_CPP
// Already Defined
#elif GEN_COMPILER_C && __STDC_VERSION__ >= 201112L
# define thread_local _Thread_local
#elif GEN_COMPILER_MSVC
# define thread_local __declspec(thread)
#elif GEN_COMPILER_CLANG
# define thread_local __thread
#else
# error "No thread local support"
#endif
#if ! defined(typeof) && (!GEN_COMPILER_C || __STDC_VERSION__ < 202311L)
# if ! GEN_COMPILER_C
# define typeof decltype
# elif defined(_MSC_VER)
# define typeof __typeof__
# elif defined(__GNUC__) || defined(__clang__)
# define typeof __typeof__
# else
# error "Compiler not supported"
# endif
#endif
#ifndef GEN_API_C_BEGIN
# if GEN_COMPILER_C
# define GEN_API_C_BEGIN
# define GEN_API_C_END
# else
# define GEN_API_C_BEGIN extern "C" {
# define GEN_API_C_END }
# endif
#endif
#if GEN_COMPILER_C
# if __STDC_VERSION__ >= 202311L
# define enum_underlying(type) : type
# else
# define enum_underlying(type)
# endif
#else
# define enum_underlying(type) : type
#endif
#if GEN_COMPILER_C
# ifndef nullptr
# define nullptr NULL
# endif
# ifndef GEN_REMOVE_PTR
# define GEN_REMOVE_PTR(type) typeof(* ( (type) NULL) )
# endif
#endif
#if ! defined(GEN_PARAM_DEFAULT) && GEN_COMPILER_CPP
# define GEN_PARAM_DEFAULT = {}
#else
# define GEN_PARAM_DEFAULT
#endif
#if GEN_COMPILER_CPP
#define struct_init(type, value) {value}
#else
#define struct_init(type, value) {value}
#endif
#if 0
#ifndef GEN_OPTIMIZE_MAPPINGS_BEGIN
# define GEN_OPTIMIZE_MAPPINGS_BEGIN _pragma(optimize("gt", on))
# define GEN_OPITMIZE_MAPPINGS_END _pragma(optimize("", on))
#endif
#else
# define GEN_OPTIMIZE_MAPPINGS_BEGIN
# define GEN_OPITMIZE_MAPPINGS_END
#endif
#pragma endregion Macros