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WIP: Restructuring project

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Edward R. Gonzalez
2024-12-10 16:13:14 -05:00
parent e3b3882443
commit 2c51a2f9c8
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base/dependencies/macros.hpp Normal file
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#ifdef GEN_INTELLISENSE_DIRECTIVES
# pragma once
#endif
#pragma region Macros
#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_equal( 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
#ifndef do_once
#define do_once( statement ) for ( local_persist b32 once = true; once; once = false, (statement) )
#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(x) __typeof__(x)
# elif defined(__GNUC__) || defined(__clang__)
# define typeof(x) __typeof__(x)
# 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
#if GEN_COMPILER_C
// ____ _ ______ _ _ ____ _ __ _
// / ___} (_) | ____} | | (_) / __ \ | | | |(_)
// | | ___ ___ _ __ ___ _ __ _ ___ | |__ _ _ _ __ ___| |_ _ ___ _ __ | | | |_ _____ _ __ | | ___ __ _ __| | _ _ __ __ _
// | |{__ |/ _ \ '_ \ / _ \ '__} |/ __| | __} | | | '_ \ / __} __} |/ _ \| '_ \ | | | \ \ / / _ \ '_ \| |/ _ \ / _` |/ _` || | '_ \ / _` |
// | |__j | __/ | | | __/ | | | (__ | | | |_| | | | | (__| l_| | (_) | | | | | l__| |\ V / __/ | | | | (_) | (_| | (_| || | | | | (_| |
// \____/ \___}_l l_l\___}_l l_l\___| l_l \__,_l_l l_l\___}\__}_l\___/l_l l_l \____/ \_/ \___}_l l_l_l\___/ \__,_l\__,_l|_|_| |_|\__, |
// This implemnents macros for utilizing "The Naive Extendible _Generic Macro" explained in: __| |
// https://github.com/JacksonAllan/CC/blob/main/articles/Better_C_Generics_Part_1_The_Extendible_Generic.md {___/
// Since gencpp is used to generate the c-library, it was choosen over the more novel implementations to keep the macros as easy to understand and unobfuscated as possible.
#define GEN_COMMA_OPERATOR , // The comma operator is used by preprocessor macros to delimit arguments, so we have to represent it via a macro to prevent parsing incorrectly.
// Helper macros for argument selection
#define GEN_SELECT_ARG_1( _1, ... ) _1 // <-- Of all th args passed pick _1.
#define GEN_SELECT_ARG_2( _1, _2, ... ) _2 // <-- Of all the args passed pick _2.
#define GEN_SELECT_ARG_3( _1, _2, _3, ... ) _3 // etc..
#define GEN_GENERIC_SEL_ENTRY_TYPE GEN_SELECT_ARG_1 // Use the arg expansion macro to select arg 1 which should have the type.
#define GEN_GENERIC_SEL_ENTRY_FUNCTION GEN_SELECT_ARG_2 // Use the arg expansion macro to select arg 2 which should have the function.
#define GEN_GENERIC_SEL_ENTRY_COMMA_DELIMITER GEN_SELECT_ARG_3 // Use the arg expansion macro to select arg 3 which should have the comma delimiter ','.
#define GEN_RESOLVED_FUNCTION_CALL // Just used to indicate where the call "occurs"
// ----------------------------------------------------------------------------------------------------------------------------------
// GEN_IF_MACRO_DEFINED_INCLUDE_THIS_SLOT( macro ) includes a _Generic slot only if the specified macro is defined (as type, function_name).
// It takes advantage of the fact that if the macro is defined, then the expanded text will contain a comma.
// Expands to ',' if it can find (type): (function) <comma_operator: ',' >
// Where GEN_GENERIC_SEL_ENTRY_COMMA_DELIMITER is specifically looking for that <comma> ,
#define GEN_IF_MACRO_DEFINED_INCLUDE_THIS_SLOT( slot_exp ) GEN_GENERIC_SEL_ENTRY_COMMA_DELIMITER( slot_exp, GEN_GENERIC_SEL_ENTRY_TYPE( slot_exp, ): GEN_GENERIC_SEL_ENTRY_FUNCTION( slot_exp, ) GEN_COMMA_OPERATOR, , )
// ^ Selects the comma ^ is the type ^ is the function ^ Insert a comma
// The slot won't exist if that comma is not found. |
// For the occastion where an expression didn't resolve to a selection option the "default: <value>" wilbe set to:
typedef struct GENCPP_NO_RESOLVED_GENERIC_SELECTION GENCPP_NO_RESOLVED_GENERIC_SELECTION;
struct GENCPP_NO_RESOLVED_GENERIC_SELECTION {
void* _THE_VOID_SLOT_;
};
GENCPP_NO_RESOLVED_GENERIC_SELECTION const gen_generic_selection_fail = {0};
// Which will provide the message: error: called object type 'struct NO_RESOLVED_GENERIC_SELECTION' is not a function or function pointer
// ----------------------------------------------------------------------------------------------------------------------------------
// Below are generated on demand for an overlaod depdendent on a type:
// -----------------------------------------------------------------------------------------------------#define GEN_FUNCTION_GENERIC_EXAMPLE( selector_arg ) _Generic( k
#define GEN_FUNCTION_GENERIC_EXAMPLE( selector_arg ) _Generic( \
(selector_arg), /* Select Via Expression*/ \
/* Extendibility slots: */ \
GEN_IF_MACRO_DEFINED_INCLUDE_THIS_SLOT( FunctionID__ARGS_SIG_1 ) \
GEN_IF_MACRO_DEFINED_INCLUDE_THIS_SLOT( FunctionID__ARGS_SIG_1 ) \
default: gen_generic_selection_fail \
) GEN_RESOLVED_FUNCTION_CALL( selector_arg )
// ----------------------------------------------------------------------------------------------------------------------------------
// Then each definiton of a function has an associated define:
// #define <function_id_macro> GEN_GENERIC_FUNCTION_ARG_SIGNATURE( <function_id>, <arguments> )
#define GEN_GENERIC_FUNCTION_ARG_SIGNATURE( name_of_function, type_delimiter ) type_delimiter name_of_function
// Then somehwere later on
// <etc> <return_type> <function_id> ( <arguments> ) { <implementation> }
// Concrete example:
// To add support for long:
#define GEN_EXAMPLE_HASH__ARGS_SIG_1 GEN_GENERIC_FUNCTION_ARG_SIGNATURE( hash__P_long, long long )
size_t gen_example_hash__P_long( long val ) { return val * 2654435761ull; }
// To add support for long long:
#define GEN_EXAMPLE_HASH__ARGS_SIG_2 GEN_GENERIC_FUNCTION_ARG_SIGNATURE( hash__P_long_long, long long )
size_t gen_example_hash__P_long_long( long long val ) { return val * 2654435761ull; }
// If using an Editor with support for syntax hightlighting macros: HASH__ARGS_SIG_1 and HASH_ARGS_SIG_2 should show color highlighting indicating the slot is enabled,
// or, "defined" for usage during the compilation pass that handles the _Generic instrinsic.
#define gen_hash_example( function_arguments ) _Generic( \
(function_arguments), /* Select Via Expression*/ \
/* Extendibility slots: */ \
GEN_IF_MACRO_DEFINED_INCLUDE_THIS_SLOT( HASH__ARGS_SIG_1 ) \
GEN_IF_MACRO_DEFINED_INCLUDE_THIS_SLOT( HASH__ARGS_SIG_2 ) \
GEN_IF_MACRO_DEFINED_INCLUDE_THIS_SLOT( HASH__ARGS_SIG_3 ) \
GEN_IF_MACRO_DEFINED_INCLUDE_THIS_SLOT( HASH__ARGS_SIG_4 ) \
GEN_IF_MACRO_DEFINED_INCLUDE_THIS_SLOT( HASH__ARGS_SIG_5 ) \
GEN_IF_MACRO_DEFINED_INCLUDE_THIS_SLOT( HASH__ARGS_SIG_6 ) \
GEN_IF_MACRO_DEFINED_INCLUDE_THIS_SLOT( HASH__ARGS_SIG_7 ) \
GEN_IF_MACRO_DEFINED_INCLUDE_THIS_SLOT( HASH__ARGS_SIG_8 ) \
default: gen_generic_selection_fail \
) GEN_RESOLVED_FUNCTION_CALL( function_arguments )
// Additional Variations:
// If the function takes more than one argument the following is used:
#define GEN_FUNCTION_GENERIC_EXAMPLE_VARADIC( selector_arg, ... ) _Generic( \
(selector_arg), \
GEN_IF_MACRO_DEFINED_INCLUDE_THIS_SLOT( FunctionID__ARGS_SIG_1 ) \
GEN_IF_MACRO_DEFINED_INCLUDE_THIS_SLOT( FunctionID__ARGS_SIG_2 ) \
/* ... */ \
GEN_IF_MACRO_DEFINED_INCLUDE_THIS_SLOT(FunctionID__ARGS_SIG_N ) \
default: gen_generic_selection_fail \
) GEN_RESOLVED_FUNCTION_CALL( selector_arg, __VA_ARG__ )
// If the function does not take the arugment as a parameter:
#define GEN_FUNCTION_GENERIC_EXAMPLE_DIRECT_TYPE( selector_arg ) _Generic( \
( GEN_TYPE_TO_EXP(selector_arg) ), \
GEN_IF_MACRO_DEFINED_INCLUDE_THIS_SLOT( FunctionID__ARGS_SIG_1 ) \
GEN_IF_MACRO_DEFINED_INCLUDE_THIS_SLOT( FunctionID__ARGS_SIG_2 ) \
/* ... */ \
GEN_IF_MACRO_DEFINED_INCLUDE_THIS_SLOT(FunctionID__ARGS_SIG_N ) \
default: gen_generic_selection_fail \
) GEN_RESOLVED_FUNCTION_CALL()
// Used to keep the _Generic keyword happy as bare types are not considered "expressions"
#define GEN_TYPE_TO_EXP(type) (* (type*)NULL)
// typedef void* GEN_GenericExampleType;
// GEN_FUNCTION_GENERIC_EXAMPLE_DIRECT_TYPE( GEN_GenericExampleType );
// END OF ------------------------ _Generic function overloading ----------------------------------------- END OF
#endif
#pragma endregion Macros