/* gencpp: An attempt at simple staged metaprogramming for c/c++. See Readme.md for more information from the project repository. Public Address: https://github.com/Ed94/gencpp */ #pragma once #ifdef gen_time #pragma region GENCPP DEPENDENCIES //! If its desired to roll your own dependencies, define GENCPP_PROVIDE_DEPENDENCIES before including this file. // Dependencies are derived from the c-zpl library: https://github.com/zpl-c/zpl #ifndef GEN_ROLL_OWN_DEPENDENCIES #if __clang__ # pragma clang diagnostic ignored "-Wunused-const-variable" # pragma clang diagnostic ignored "-Wswitch" # pragma clang diagnostic ignored "-Wunused-variable" # pragma clang diagnostic ignored "-Wunknown-pragmas" # pragma clang diagnostic ignored "-Wvarargs" # pragma clang diagnostic ignored "-Wunused-function" #endif #pragma region Platform Detection /* Platform architecture */ #if defined( _WIN64 ) || defined( __x86_64__ ) || defined( _M_X64 ) || defined( __64BIT__ ) || defined( __powerpc64__ ) || defined( __ppc64__ ) || defined( __aarch64__ ) # ifndef GEN_ARCH_64_BIT # define GEN_ARCH_64_BIT 1 # endif #else # ifndef GEN_ARCH_32_BIT # define GEN_ARCH_32_BIT 1 # endif #endif /* Platform OS */ #if defined( _WIN32 ) || defined( _WIN64 ) # ifndef GEN_SYSTEM_WINDOWS # define GEN_SYSTEM_WINDOWS 1 # endif #elif defined( __APPLE__ ) && defined( __MACH__ ) # ifndef GEN_SYSTEM_OSX # define GEN_SYSTEM_OSX 1 # endif # ifndef GEN_SYSTEM_MACOS # define GEN_SYSTEM_MACOS 1 # endif # include # if TARGET_IPHONE_SIMULATOR == 1 || TARGET_OS_IPHONE == 1 # ifndef GEN_SYSTEM_IOS # define GEN_SYSTEM_IOS 1 # endif # endif #elif defined( __unix__ ) # ifndef GEN_SYSTEM_UNIX # define GEN_SYSTEM_UNIX 1 # endif # if defined( ANDROID ) || defined( __ANDROID__ ) # ifndef GEN_SYSTEM_ANDROID # define GEN_SYSTEM_ANDROID 1 # endif # ifndef GEN_SYSTEM_LINUX # define GEN_SYSTEM_LINUX 1 # endif # elif defined( __linux__ ) # ifndef GEN_SYSTEM_LINUX # define GEN_SYSTEM_LINUX 1 # endif # elif defined( __FreeBSD__ ) || defined( __FreeBSD_kernel__ ) # ifndef GEN_SYSTEM_FREEBSD # define GEN_SYSTEM_FREEBSD 1 # endif # elif defined( __OpenBSD__ ) # ifndef GEN_SYSTEM_OPENBSD # define GEN_SYSTEM_OPENBSD 1 # endif # elif defined( __EMSCRIPTEN__ ) # ifndef GEN_SYSTEM_EMSCRIPTEN # define GEN_SYSTEM_EMSCRIPTEN 1 # endif # elif defined( __CYGWIN__ ) # ifndef GEN_SYSTEM_CYGWIN # define GEN_SYSTEM_CYGWIN 1 # endif # else # error This UNIX operating system is not supported # endif #else # error This operating system is not supported #endif /* Platform compiler */ #if defined( _MSC_VER ) # define GEN_COMPILER_MSVC 1 #elif defined( __GNUC__ ) # define GEN_COMPILER_GCC 1 #elif defined( __clang__ ) # define GEN_COMPILER_CLANG 1 #elif defined( __MINGW32__ ) # define GEN_COMPILER_MINGW 1 # error Unknown compiler #endif #if defined( __has_attribute ) # define GEN_HAS_ATTRIBUTE( attribute ) __has_attribute( attribute ) #else # define GEN_HAS_ATTRIBUTE( attribute ) ( 0 ) #endif #define GEN_DEF_INLINE static #define GEN_IMPL_INLINE static inline #ifdef GEN_COMPILER_MSVC # define forceinline __forceinline # define neverinline __declspec( noinline ) #elif defined(GEN_COMPILER_GCC) # define forceinline inline __attribute__((__always_inline__)) # define neverinline __attribute__( ( __noinline__ ) ) #elif defined(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 #pragma endregion Platform Detection #pragma region Mandatory Includes # include # include # if defined( GEN_SYSTEM_WINDOWS ) # include # endif #pragma endregion Mandatory Includes namespace gen { #define zpl_cast( Type ) ( Type ) // Keywords #define global static // Global variables #define internal static // Internal linkage #define local_persist static // Local Persisting variables // Bits #define bit( Value_ ) ( 1 << Value_ ) #define bitfield_is_equal( Type_, Field_, Mask_ ) ( (Type_(Mask_) & Type_(Field_)) == Type_(Mask_) ) // Casting #define ccast( Type_, Value_ ) * const_cast< Type_* >( & (Value_) ) #define pcast( Type_, Value_ ) ( * (Type_*)( & (Value_) ) ) #define rcast( Type_, Value_ ) reinterpret_cast< Type_ >( Value_ ) #define scast( Type_, Value_ ) static_cast< Type_ >( Value_ ) // Num Arguments (Varadics) #if defined(__GNUC__) || defined(__clang__) // Supports 0-10 arguments #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, \ N, ... \ ) N // _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, // ## deletes preceding comma if _VA_ARGS__ is empty (GCC, Clang) #define num_args(...) \ num_args_impl(_, ## __VA_ARGS__, \ 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, \ 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, \ 0 \ ) // 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, #else // Supports 1-10 arguments #define num_args_impl( \ _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, \ _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, \ N, ... \ ) N #define num_args(...) \ num_args_impl( __VA_ARGS__, \ 20, 19, 18, 17, 16, 15, 14, 13, 12, 11, \ 10, 9, 8, 7, 6, 5, 4, 3, 2, 1 \ ) #endif // Stringizing #define stringize_va( ... ) #__VA_ARGS__ #define stringize( ... ) stringize_va( __VA_ARGS__ ) // Function do once #define do_once() \ do \ { \ static \ bool Done = false; \ if ( Done ) \ return; \ Done = true; \ } \ while(0) #define do_once_start \ do \ { \ static \ bool Done = false; \ if ( Done ) \ break; \ Done = true; #define do_once_end \ } \ while(0); #define count_of( x ) ( ( size_of( x ) / size_of( 0 [ x ] ) ) / ( ( sw )( ! ( size_of( x ) % size_of( 0 [ x ] ) ) ) ) ) #define is_between( x, lower, upper ) ( ( ( lower ) <= ( x ) ) && ( ( x ) <= ( upper ) ) ) #define min( a, b ) ( ( a ) < ( b ) ? ( a ) : ( b ) ) #define size_of( x ) ( sw )( sizeof( x ) ) #define swap( Type, a, b ) \ do \ { \ Type tmp = ( a ); \ ( a ) = ( b ); \ ( b ) = tmp; \ } while ( 0 ) #pragma region Basic Types #define GEN_U8_MIN 0u #define GEN_U8_MAX 0xffu #define GEN_I8_MIN ( -0x7f - 1 ) #define GEN_I8_MAX 0x7f #define GEN_U16_MIN 0u #define GEN_U16_MAX 0xffffu #define GEN_I16_MIN ( -0x7fff - 1 ) #define GEN_I16_MAX 0x7fff #define GEN_U32_MIN 0u #define GEN_U32_MAX 0xffffffffu #define GEN_I32_MIN ( -0x7fffffff - 1 ) #define GEN_I32_MAX 0x7fffffff #define GEN_U64_MIN 0ull #define GEN_U64_MAX 0xffffffffffffffffull #define GEN_I64_MIN ( -0x7fffffffffffffffll - 1 ) #define GEN_I64_MAX 0x7fffffffffffffffll #if defined( GEN_ARCH_32_BIT ) # define GEN_USIZE_MIN GEN_U32_MIN # define GEN_USIZE_MAX GEN_U32_MAX # define GEN_ISIZE_MIN GEN_S32_MIN # define GEN_ISIZE_MAX GEN_S32_MAX #elif defined( GEN_ARCH_64_BIT ) # define GEN_USIZE_MIN GEN_U64_MIN # define GEN_USIZE_MAX GEN_U64_MAX # define GEN_ISIZE_MIN GEN_I64_MIN # define GEN_ISIZE_MAX GEN_I64_MAX #else # error Unknown architecture size. This library only supports 32 bit and 64 bit architectures. #endif #define GEN_F32_MIN 1.17549435e-38f #define GEN_F32_MAX 3.40282347e+38f #define GEN_F64_MIN 2.2250738585072014e-308 #define GEN_F64_MAX 1.7976931348623157e+308 #if defined( GEN_COMPILER_MSVC ) # if _MSC_VER < 1300 typedef unsigned char u8; typedef signed char s8; typedef unsigned short u16; typedef signed short s16; typedef unsigned int u32; typedef signed int s32; # else typedef unsigned __int8 u8; typedef signed __int8 s8; typedef unsigned __int16 u16; typedef signed __int16 s16; typedef unsigned __int32 u32; typedef signed __int32 s32; # endif typedef unsigned __int64 u64; typedef signed __int64 s64; #else # include typedef uint8_t u8; typedef int8_t s8; typedef uint16_t u16; typedef int16_t s16; typedef uint32_t u32; typedef int32_t s32; typedef uint64_t u64; typedef int64_t s64; #endif static_assert( sizeof( u8 ) == sizeof( s8 ), "sizeof(u8) != sizeof(s8)" ); static_assert( sizeof( u16 ) == sizeof( s16 ), "sizeof(u16) != sizeof(s16)" ); static_assert( sizeof( u32 ) == sizeof( s32 ), "sizeof(u32) != sizeof(s32)" ); static_assert( sizeof( u64 ) == sizeof( s64 ), "sizeof(u64) != sizeof(s64)" ); static_assert( sizeof( u8 ) == 1, "sizeof(u8) != 1" ); static_assert( sizeof( u16 ) == 2, "sizeof(u16) != 2" ); static_assert( sizeof( u32 ) == 4, "sizeof(u32) != 4" ); static_assert( sizeof( u64 ) == 8, "sizeof(u64) != 8" ); typedef size_t uw; typedef ptrdiff_t sw; static_assert( sizeof( uw ) == sizeof( sw ), "sizeof(uw) != sizeof(sw)" ); // NOTE: (u)zpl_intptr is only here for semantic reasons really as this library will only support 32/64 bit OSes. #if defined( _WIN64 ) typedef signed __int64 sptr; typedef unsigned __int64 uptr; #elif defined( _WIN32 ) // NOTE; To mark types changing their size, e.g. zpl_intptr # ifndef _W64 # if ! defined( __midl ) && ( defined( _X86_ ) || defined( _M_IX86 ) ) && _MSC_VER >= 1300 # define _W64 __w64 # else # define _W64 # endif # endif typedef _W64 signed int sptr; typedef _W64 unsigned int uptr; #else typedef uintptr_t uptr; typedef intptr_t sptr; #endif static_assert( sizeof( uptr ) == sizeof( sptr ), "sizeof(uptr) != sizeof(sptr)" ); typedef float f32; typedef double f64; static_assert( sizeof( f32 ) == 4, "sizeof(f32) != 4" ); static_assert( sizeof( f64 ) == 8, "sizeof(f64) != 8" ); typedef s8 b8; typedef s16 b16; typedef s32 b32; #pragma endregion Basic Types #pragma region Debug #if defined( _MSC_VER ) # if _MSC_VER < 1300 # define GEN_DEBUG_TRAP() __asm int 3 /* Trap to debugger! */ # else # define GEN_DEBUG_TRAP() __debugbreak() # endif #elif defined( GEN_COMPILER_TINYC ) # define GEN_DEBUG_TRAP() process_exit( 1 ) #else # define GEN_DEBUG_TRAP() __builtin_trap() #endif #define GEN_ASSERT( cond ) GEN_ASSERT_MSG( cond, NULL ) #define GEN_ASSERT_MSG( cond, msg, ... ) \ do \ { \ if ( ! ( cond ) ) \ { \ assert_handler( #cond, __FILE__, zpl_cast( s64 ) __LINE__, msg, ##__VA_ARGS__ ); \ GEN_DEBUG_TRAP(); \ } \ } while ( 0 ) #define GEN_ASSERT_NOT_NULL( ptr ) GEN_ASSERT_MSG( ( ptr ) != NULL, #ptr " must not be NULL" ) // NOTE: Things that shouldn't happen with a message! #define GEN_PANIC( msg, ... ) GEN_ASSERT_MSG( 0, msg, ##__VA_ARGS__ ) void assert_handler( char const* condition, char const* file, s32 line, char const* msg, ... ); s32 assert_crash( char const* condition ); void process_exit( u32 code ); #pragma endregion Debug #pragma region Memory #define kilobytes( x ) ( ( x ) * ( s64 )( 1024 ) ) #define megabytes( x ) ( kilobytes( x ) * ( s64 )( 1024 ) ) #define gigabytes( x ) ( megabytes( x ) * ( s64 )( 1024 ) ) #define terabytes( x ) ( gigabytes( x ) * ( s64 )( 1024 ) ) #define GEN__ONES ( zpl_cast( uw ) - 1 / GEN_U8_MAX ) #define GEN__HIGHS ( GEN__ONES * ( GEN_U8_MAX / 2 + 1 ) ) #define GEN__HAS_ZERO( x ) ( ( ( x )-GEN__ONES ) & ~( x )&GEN__HIGHS ) //! Checks if value is power of 2. GEN_DEF_INLINE b32 is_power_of_two( sw x ); //! Aligns address to specified alignment. GEN_DEF_INLINE void* align_forward( void* ptr, sw alignment ); //! Aligns value to a specified alignment. GEN_DEF_INLINE s64 align_forward_i64( s64 value, sw alignment ); //! Moves pointer forward by bytes. GEN_DEF_INLINE void* pointer_add( void* ptr, sw bytes ); //! Copy non-overlapping memory from source to destination. void* mem_copy( void* dest, void const* source, sw size ); //! Search for a constant value within the size limit at memory location. void const* mem_find( void const* data, u8 byte_value, sw size ); //! Copy memory from source to destination. GEN_DEF_INLINE void* mem_move( void* dest, void const* source, sw size ); //! Set constant value at memory location with specified size. GEN_DEF_INLINE void* mem_set( void* data, u8 byte_value, sw size ); //! @param ptr Memory location to clear up. //! @param size The size to clear up with. GEN_DEF_INLINE void zero_size( void* ptr, sw size ); //! Clears up an item. #define zero_item( t ) zero_size( ( t ), size_of( *( t ) ) ) // NOTE: Pass pointer of struct //! Clears up an array. #define zero_array( a, count ) zero_size( ( a ), size_of( *( a ) ) * count ) enum AllocType : u8 { EAllocation_ALLOC, EAllocation_FREE, EAllocation_FREE_ALL, EAllocation_RESIZE, }; using AllocatorProc = void* ( void* allocator_data, AllocType type , sw size, sw alignment , void* old_memory, sw old_size , u64 flags ); struct AllocatorInfo { AllocatorProc* Proc; void* Data; }; enum AllocFlag { ALLOCATOR_FLAG_CLEAR_TO_ZERO = bit( 0 ), }; #ifndef GEN_DEFAULT_MEMORY_ALIGNMENT # define GEN_DEFAULT_MEMORY_ALIGNMENT ( 2 * size_of( void* ) ) #endif #ifndef GEN_DEFAULT_ALLOCATOR_FLAGS # define GEN_DEFAULT_ALLOCATOR_FLAGS ( ALLOCATOR_FLAG_CLEAR_TO_ZERO ) #endif //! Allocate memory with default alignment. GEN_DEF_INLINE void* alloc( AllocatorInfo a, sw size ); //! Allocate memory with specified alignment. GEN_DEF_INLINE void* alloc_align( AllocatorInfo a, sw size, sw alignment ); //! Free allocated memory. GEN_DEF_INLINE void free( AllocatorInfo a, void* ptr ); //! Free all memory allocated by an allocator. GEN_DEF_INLINE void free_all( AllocatorInfo a ); //! Resize an allocated memory. GEN_DEF_INLINE void* resize( AllocatorInfo a, void* ptr, sw old_size, sw new_size ); //! Resize an allocated memory with specified alignment. GEN_DEF_INLINE void* resize_align( AllocatorInfo a, void* ptr, sw old_size, sw new_size, sw alignment ); //! Allocate memory for an item. #define alloc_item( allocator_, Type ) ( Type* )alloc( allocator_, size_of( Type ) ) //! Allocate memory for an array of items. #define alloc_array( allocator_, Type, count ) ( Type* )alloc( allocator_, size_of( Type ) * ( count ) ) /* heap memory analysis tools */ /* define GEN_HEAP_ANALYSIS to enable this feature */ /* call zpl_heap_stats_init at the beginning of the entry point */ /* you can call zpl_heap_stats_check near the end of the execution to validate any possible leaks */ void heap_stats_init( void ); sw heap_stats_used_memory( void ); sw heap_stats_alloc_count( void ); void heap_stats_check( void ); //! Allocate/Resize memory using default options. //! Use this if you don't need a "fancy" resize allocation GEN_DEF_INLINE void* default_resize_align( AllocatorInfo a, void* ptr, sw old_size, sw new_size, sw alignment ); void* heap_allocator_proc( void* allocator_data, AllocType type, sw size, sw alignment, void* old_memory, sw old_size, u64 flags ); //! The heap allocator backed by operating system's memory manager. constexpr AllocatorInfo heap( void ) { return { heap_allocator_proc, nullptr }; } //! Helper to allocate memory using heap allocator. #define malloc( sz ) alloc( heap(), sz ) //! Helper to free memory allocated by heap allocator. #define mfree( ptr ) free( heap(), ptr ) GEN_IMPL_INLINE b32 is_power_of_two( sw x ) { if ( x <= 0 ) return false; return ! ( x & ( x - 1 ) ); } GEN_IMPL_INLINE void* align_forward( void* ptr, sw alignment ) { uptr p; GEN_ASSERT( is_power_of_two( alignment ) ); p = zpl_cast( uptr ) ptr; return zpl_cast( void* )( ( p + ( alignment - 1 ) ) & ~( alignment - 1 ) ); } GEN_IMPL_INLINE s64 align_forward_i64( s64 value, sw alignment ) { return value + ( alignment - value % alignment ) % alignment; } GEN_IMPL_INLINE void* pointer_add( void* ptr, sw bytes ) { return zpl_cast( void* )( zpl_cast( u8* ) ptr + bytes ); } GEN_IMPL_INLINE void* mem_move( void* dest, void const* source, sw n ) { if ( dest == NULL ) { return NULL; } u8* d = zpl_cast( u8* ) dest; u8 const* s = zpl_cast( u8 const* ) source; if ( d == s ) return d; if ( s + n <= d || d + n <= s ) // NOTE: Non-overlapping return mem_copy( d, s, n ); if ( d < s ) { if ( zpl_cast( uptr ) s % size_of( sw ) == zpl_cast( uptr ) d % size_of( sw ) ) { while ( zpl_cast( uptr ) d % size_of( sw ) ) { if ( ! n-- ) return dest; *d++ = *s++; } while ( n >= size_of( sw ) ) { *zpl_cast( sw* ) d = *zpl_cast( sw* ) s; n -= size_of( sw ); d += size_of( sw ); s += size_of( sw ); } } for ( ; n; n-- ) *d++ = *s++; } else { if ( ( zpl_cast( uptr ) s % size_of( sw ) ) == ( zpl_cast( uptr ) d % size_of( sw ) ) ) { while ( zpl_cast( uptr )( d + n ) % size_of( sw ) ) { if ( ! n-- ) return dest; d[ n ] = s[ n ]; } while ( n >= size_of( sw ) ) { n -= size_of( sw ); *zpl_cast( sw* )( d + n ) = *zpl_cast( sw* )( s + n ); } } while ( n ) n--, d[ n ] = s[ n ]; } return dest; } GEN_IMPL_INLINE void* mem_set( void* dest, u8 c, sw n ) { if ( dest == NULL ) { return NULL; } u8* s = zpl_cast( u8* ) dest; sw k; u32 c32 = ( ( u32 )-1 ) / 255 * c; if ( n == 0 ) return dest; s[ 0 ] = s[ n - 1 ] = c; if ( n < 3 ) return dest; s[ 1 ] = s[ n - 2 ] = c; s[ 2 ] = s[ n - 3 ] = c; if ( n < 7 ) return dest; s[ 3 ] = s[ n - 4 ] = c; if ( n < 9 ) return dest; k = -zpl_cast( sptr ) s & 3; s += k; n -= k; n &= -4; *zpl_cast( u32* )( s + 0 ) = c32; *zpl_cast( u32* )( s + n - 4 ) = c32; if ( n < 9 ) return dest; *zpl_cast( u32* )( s + 4 ) = c32; *zpl_cast( u32* )( s + 8 ) = c32; *zpl_cast( u32* )( s + n - 12 ) = c32; *zpl_cast( u32* )( s + n - 8 ) = c32; if ( n < 25 ) return dest; *zpl_cast( u32* )( s + 12 ) = c32; *zpl_cast( u32* )( s + 16 ) = c32; *zpl_cast( u32* )( s + 20 ) = c32; *zpl_cast( u32* )( s + 24 ) = c32; *zpl_cast( u32* )( s + n - 28 ) = c32; *zpl_cast( u32* )( s + n - 24 ) = c32; *zpl_cast( u32* )( s + n - 20 ) = c32; *zpl_cast( u32* )( s + n - 16 ) = c32; k = 24 + ( zpl_cast( uptr ) s & 4 ); s += k; n -= k; { u64 c64 = ( zpl_cast( u64 ) c32 << 32 ) | c32; while ( n > 31 ) { *zpl_cast( u64* )( s + 0 ) = c64; *zpl_cast( u64* )( s + 8 ) = c64; *zpl_cast( u64* )( s + 16 ) = c64; *zpl_cast( u64* )( s + 24 ) = c64; n -= 32; s += 32; } } return dest; } GEN_IMPL_INLINE void* alloc_align( AllocatorInfo a, sw size, sw alignment ) { return a.Proc( a.Data, EAllocation_ALLOC, size, alignment, nullptr, 0, GEN_DEFAULT_ALLOCATOR_FLAGS ); } GEN_IMPL_INLINE void* alloc( AllocatorInfo a, sw size ) { return alloc_align( a, size, GEN_DEFAULT_MEMORY_ALIGNMENT ); } GEN_IMPL_INLINE void free( AllocatorInfo a, void* ptr ) { if ( ptr != nullptr ) a.Proc( a.Data, EAllocation_FREE, 0, 0, ptr, 0, GEN_DEFAULT_ALLOCATOR_FLAGS ); } GEN_IMPL_INLINE void free_all( AllocatorInfo a ) { a.Proc( a.Data, EAllocation_FREE_ALL, 0, 0, nullptr, 0, GEN_DEFAULT_ALLOCATOR_FLAGS ); } GEN_IMPL_INLINE void* resize( AllocatorInfo a, void* ptr, sw old_size, sw new_size ) { return resize_align( a, ptr, old_size, new_size, GEN_DEFAULT_MEMORY_ALIGNMENT ); } GEN_IMPL_INLINE void* resize_align( AllocatorInfo a, void* ptr, sw old_size, sw new_size, sw alignment ) { return a.Proc( a.Data, EAllocation_RESIZE, new_size, alignment, ptr, old_size, GEN_DEFAULT_ALLOCATOR_FLAGS ); } GEN_IMPL_INLINE void* default_resize_align( AllocatorInfo a, void* old_memory, sw old_size, sw new_size, sw alignment ) { if ( ! old_memory ) return alloc_align( a, new_size, alignment ); if ( new_size == 0 ) { free( a, old_memory ); return nullptr; } if ( new_size < old_size ) new_size = old_size; if ( old_size == new_size ) { return old_memory; } else { void* new_memory = alloc_align( a, new_size, alignment ); if ( ! new_memory ) return nullptr; mem_move( new_memory, old_memory, min( new_size, old_size ) ); free( a, old_memory ); return new_memory; } } GEN_IMPL_INLINE void zero_size( void* ptr, sw size ) { mem_set( ptr, 0, size ); } struct Arena { static void* allocator_proc( void* allocator_data, AllocType type, sw size, sw alignment, void* old_memory, sw old_size, u64 flags ); static Arena init_from_memory( void* start, sw size ) { return { { nullptr, nullptr }, start, size, 0, 0 }; } static Arena init_from_allocator( AllocatorInfo backing, sw size ) { Arena result = { backing, alloc( backing, size), size, 0, 0 }; return result; } static Arena init_sub( Arena& parent, sw size ) { return init_from_allocator( parent.Backing, size ); } sw alignment_of( sw alignment ) { sw alignment_offset, result_pointer, mask; GEN_ASSERT( is_power_of_two( alignment ) ); alignment_offset = 0; result_pointer = (sw) PhysicalStart + TotalUsed; mask = alignment - 1; if ( result_pointer & mask ) alignment_offset = alignment - ( result_pointer & mask ); return alignment_offset; } void check() { GEN_ASSERT( TempCount == 0 ); } void free() { if ( Backing.Proc ) { gen::free( Backing, PhysicalStart ); PhysicalStart = nullptr; } } sw size_remaining( sw alignment ) { sw result = TotalSize - ( TotalUsed + alignment_of( alignment ) ); return result; } AllocatorInfo Backing; void* PhysicalStart; sw TotalSize; sw TotalUsed; sw TempCount; operator AllocatorInfo() { return { allocator_proc, this }; } }; struct Pool { static void* allocator_proc( void* allocator_data, AllocType type, sw size, sw alignment, void* old_memory, sw old_size, u64 flags ); static Pool init( AllocatorInfo backing, sw num_blocks, sw block_size ) { return init_align( backing, num_blocks, block_size, GEN_DEFAULT_MEMORY_ALIGNMENT ); } static Pool init_align( AllocatorInfo backing, sw num_blocks, sw block_size, sw block_align ); void free() { if ( Backing.Proc ) { gen::free( Backing, PhysicalStart ); } } AllocatorInfo Backing; void* PhysicalStart; void* FreeList; sw BlockSize; sw BlockAlign; sw TotalSize; sw NumBlocks; operator AllocatorInfo() { return { allocator_proc, this }; } }; #pragma endregion Memory #pragma region String Ops GEN_DEF_INLINE const char* char_first_occurence( const char* str, char c ); GEN_DEF_INLINE b32 char_is_alpha( char c ); GEN_DEF_INLINE b32 char_is_alphanumeric( char c ); GEN_DEF_INLINE b32 char_is_digit( char c ); GEN_DEF_INLINE b32 char_is_hex_digit( char c ); GEN_DEF_INLINE b32 char_is_space( char c ); GEN_DEF_INLINE char char_to_lower( char c ); GEN_DEF_INLINE char char_to_upper( char c ); GEN_DEF_INLINE s32 digit_to_int( char c ); GEN_DEF_INLINE s32 hex_digit_to_int( char c ); GEN_DEF_INLINE s32 str_compare( const char* s1, const char* s2 ); GEN_DEF_INLINE s32 str_compare( const char* s1, const char* s2, sw len ); GEN_DEF_INLINE char* str_copy( char* dest, const char* source, sw len ); GEN_DEF_INLINE sw str_copy_nulpad( char* dest, const char* source, sw len ); GEN_DEF_INLINE sw str_len( const char* str ); GEN_DEF_INLINE sw str_len( const char* str, sw max_len ); GEN_DEF_INLINE char* str_reverse( char* str ); // NOTE: ASCII only // NOTE: ASCII only GEN_DEF_INLINE void str_to_lower( char* str ); GEN_DEF_INLINE void str_to_upper( char* str ); s64 str_to_i64( const char* str, char** end_ptr, s32 base ); // TODO : Support more than just decimal and hexadecimal void i64_to_str( s64 value, char* string, s32 base ); void u64_to_str( u64 value, char* string, s32 base ); GEN_IMPL_INLINE const char* char_first_occurence( const char* s, char c ) { char ch = c; for ( ; *s != ch; s++ ) { if ( *s == '\0' ) return NULL; } return s; } GEN_IMPL_INLINE b32 char_is_alpha( char c ) { if ( ( c >= 'A' && c <= 'Z' ) || ( c >= 'a' && c <= 'z' ) ) return true; return false; } GEN_IMPL_INLINE b32 char_is_alphanumeric( char c ) { return char_is_alpha( c ) || char_is_digit( c ); } GEN_IMPL_INLINE b32 char_is_digit( char c ) { if ( c >= '0' && c <= '9' ) return true; return false; } GEN_IMPL_INLINE b32 char_is_hex_digit( char c ) { if ( char_is_digit( c ) || ( c >= 'a' && c <= 'f' ) || ( c >= 'A' && c <= 'F' ) ) return true; return false; } GEN_IMPL_INLINE b32 char_is_space( char c ) { if ( c == ' ' || c == '\t' || c == '\n' || c == '\r' || c == '\f' || c == '\v' ) return true; return false; } GEN_IMPL_INLINE char char_to_lower( char c ) { if ( c >= 'A' && c <= 'Z' ) return 'a' + ( c - 'A' ); return c; } GEN_IMPL_INLINE char char_to_upper( char c ) { if ( c >= 'a' && c <= 'z' ) return 'A' + ( c - 'a' ); return c; } GEN_IMPL_INLINE s32 digit_to_int( char c ) { return char_is_digit( c ) ? c - '0' : c - 'W'; } GEN_IMPL_INLINE s32 hex_digit_to_int( char c ) { if ( char_is_digit( c ) ) return digit_to_int( c ); else if ( is_between( c, 'a', 'f' ) ) return c - 'a' + 10; else if ( is_between( c, 'A', 'F' ) ) return c - 'A' + 10; return -1; } GEN_IMPL_INLINE s32 str_compare( const char* s1, const char* s2 ) { while ( *s1 && ( *s1 == *s2 ) ) { s1++, s2++; } return *( u8* )s1 - *( u8* )s2; } GEN_IMPL_INLINE s32 str_compare( const char* s1, const char* s2, sw len ) { for ( ; len > 0; s1++, s2++, len-- ) { if ( *s1 != *s2 ) return ( ( s1 < s2 ) ? -1 : +1 ); else if ( *s1 == '\0' ) return 0; } return 0; } GEN_IMPL_INLINE char* str_copy( char* dest, const char* source, sw len ) { GEN_ASSERT_NOT_NULL( dest ); if ( source ) { char* str = dest; while ( len > 0 && *source ) { *str++ = *source++; len--; } while ( len > 0 ) { *str++ = '\0'; len--; } } return dest; } GEN_IMPL_INLINE sw str_copy_nulpad( char* dest, const char* source, sw len ) { sw result = 0; GEN_ASSERT_NOT_NULL( dest ); if ( source ) { const char* source_start = source; char* str = dest; while ( len > 0 && *source ) { *str++ = *source++; len--; } while ( len > 0 ) { *str++ = '\0'; len--; } result = source - source_start; } return result; } GEN_IMPL_INLINE sw str_len( const char* str ) { if ( str == NULL ) { return 0; } const char* p = str; while ( *str ) str++; return str - p; } GEN_IMPL_INLINE sw str_len( const char* str, sw max_len ) { const char* end = zpl_cast( const char* ) mem_find( str, 0, max_len ); if ( end ) return end - str; return max_len; } GEN_IMPL_INLINE char* str_reverse( char* str ) { sw len = str_len( str ); char* a = str + 0; char* b = str + len - 1; len /= 2; while ( len-- ) { swap( char, *a, *b ); a++, b--; } return str; } GEN_IMPL_INLINE void str_to_lower( char* str ) { if ( ! str ) return; while ( *str ) { *str = char_to_lower( *str ); str++; } } GEN_IMPL_INLINE void str_to_upper( char* str ) { if ( ! str ) return; while ( *str ) { *str = char_to_upper( *str ); str++; } } #pragma endregion String Ops #pragma region Containers template struct Array { struct Header { AllocatorInfo Allocator; uw Capacity; uw Num; }; static Array init( AllocatorInfo allocator ) { return init_reserve( allocator, grow_formula(0) ); } static Array init_reserve( AllocatorInfo allocator, sw capacity ) { Header* header = rcast( Header*, alloc( allocator, sizeof(Header) + sizeof(Type) * capacity )); if ( header == nullptr ) return { nullptr }; header->Allocator = allocator; header->Capacity = capacity; header->Num = 0; return { rcast( Type*, header + 1) }; } static uw grow_formula( uw value ) { return 2 * value + 8; } bool append( Type value ) { Header* header = get_header(); if ( header->Num == header->Capacity ) { if ( ! grow( header->Capacity )) return false; header = get_header(); } Data[ header->Num ] = value; header->Num++; return true; } Type& back( void ) { Header& header = * get_header(); return Data[ header.Num - 1 ]; } void clear( void ) { Header& header = * get_header(); header.Num = 0; } bool fill( uw begin, uw end, Type value ) { Header& header = * get_header(); if ( begin < 0 || end >= header.Num ) return false; for ( sw idx = begin; idx < end; idx++ ) { Data[ idx ] = value; } return true; } void free( void ) { Header& header = * get_header(); gen::free( header.Allocator, &header ); } Header* get_header( void ) { return rcast( Header*, Data ) - 1 ; } bool grow( uw min_capacity ) { Header& header = * get_header(); uw new_capacity = grow_formula( header.Capacity ); if ( new_capacity < min_capacity ) new_capacity = min_capacity; return set_capacity( new_capacity ); } uw num( void ) { return get_header()->Num; } bool pop( void ) { Header& header = * get_header(); GEN_ASSERT( header.Num > 0 ); header.Num--; } void remove_at( uw idx ) { Header* header = get_header(); GEN_ASSERT( idx < header->Num ); mem_move( header + idx, header + idx + 1, sizeof( Type ) * ( header->Num - idx - 1 ) ); header->Num--; } bool reserve( uw new_capacity ) { Header& header = * get_header(); if ( header.Capacity < new_capacity ) return set_capacity( new_capacity ); return true; } bool resize( uw num ) { Header* header = get_header(); if ( header->Capacity < num ) { if ( ! grow( num ) ) return false; header = get_header(); } header->Num = num; return true; } bool set_capacity( uw new_capacity ) { Header& header = * get_header(); if ( new_capacity == header.Capacity ) return true; if ( new_capacity < header.Num ) header.Num = new_capacity; sw size = sizeof( Header ) + sizeof( Type ) * new_capacity; Header* new_header = rcast( Header*, alloc( header.Allocator, size ) ); if ( new_header == nullptr ) return false; mem_move( new_header, &header, sizeof( Header ) + sizeof( Type ) * header.Num ); new_header->Capacity = new_capacity; gen::free( header.Allocator, &header ); Data = rcast( Type*, new_header + 1); return true; } Type* Data; operator Type*() { return Data; } operator Type const*() const { return Data; } // For-range based support Type* begin() { return Data; } Type* end() { return Data + get_header()->Num; } }; template struct HashTable { struct FindResult { sw HashIndex; sw PrevIndex; sw EntryIndex; }; struct Entry { u64 Key; sw Next; Type Value; }; static HashTable init( AllocatorInfo allocator ) { HashTable result = { { nullptr }, { nullptr } }; result.Hashes = Array::init( allocator ); result.Entries = Array::init( allocator ); return result; } static HashTable init_reserve( AllocatorInfo allocator, sw num ) { HashTable result = { { nullptr }, { nullptr } }; result.Hashes = Array::init_reserve( allocator, num ); result.Hashes.get_header()->Num = num; result.Entries = Array::init_reserve( allocator, num ); return result; } void clear( void ) { for ( sw idx = 0; idx < Hashes.num(); idx++ ) Hashes[ idx ] = -1; Hashes.clear(); Entries.clear(); } void destroy( void ) { if ( Hashes && Hashes.get_header()->Capacity ) Hashes.free(); if ( Entries && Hashes.get_header()->Capacity ) Entries.free(); } Type* get( u64 key ) { sw idx = find( key ).EntryIndex; if ( idx >= 0 ) return & Entries[ idx ].Value; return nullptr; } using MapProc = void (*)( u64 key, Type value ); void map( MapProc map_proc ) { GEN_ASSERT_NOT_NULL( map_proc ); for ( sw idx = 0; idx < Entries.num(); idx++ ) { map_proc( Entries[ idx ].Key, Entries[ idx ].Value ); } } using MapMutProc = void (*)( u64 key, Type* value ); void map_mut( MapMutProc map_proc ) { GEN_ASSERT_NOT_NULL( map_proc ); for ( sw idx = 0; idx < Entries.num(); idx++ ) { map_proc( Entries[ idx ].Key, & Entries[ idx ].Value ); } } void grow() { sw new_num = Array::grow_formula( Entries.num() ); rehash( new_num ); } void rehash( sw new_num ) { sw idx; sw last_added_index; HashTable new_ht = init_reserve( Hashes.get_header()->Allocator, new_num ); Array::Header* hash_header = new_ht.Hashes.get_header(); for ( idx = 0; idx < new_ht.Hashes.num(); ++idx ) new_ht.Hashes[ idx ] = -1; for ( idx = 0; idx < Entries.num(); ++idx ) { Entry& entry = Entries[ idx ]; FindResult find_result; if ( new_ht.Hashes.num() == 0 ) new_ht.grow(); entry = Entries[ idx ]; find_result = new_ht.find( entry.Key ); last_added_index = new_ht.add_entry( entry.Key ); if ( find_result.PrevIndex < 0 ) new_ht.Hashes[ find_result.HashIndex ] = last_added_index; else new_ht.Entries[ find_result.PrevIndex ].Next = last_added_index; new_ht.Entries[ last_added_index ].Next = find_result.EntryIndex; new_ht.Entries[ last_added_index ].Value = entry.Value; } destroy(); *this = new_ht; } void rehash_fast() { sw idx; for ( idx = 0; idx < Entries.num(); idx++ ) Entries[ idx ].Next = -1; for ( idx = 0; idx < Hashes.num(); idx++ ) Hashes[ idx ] = -1; for ( idx = 0; idx < Entries.num(); idx++ ) { Entry* entry; FindResult find_result; } } void remove( u64 key ) { FindResult find_result = find( key); if ( find_result.EntryIndex >= 0 ) { Entries.remove_at( find_result.EntryIndex ); rehash_fast(); } } void remove_entry( sw idx ) { Entries.remove_at( idx ); } void set( u64 key, Type value ) { sw idx; FindResult find_result; if ( Hashes.num() == 0 ) grow(); find_result = find( key ); if ( find_result.EntryIndex >= 0 ) { idx = find_result.EntryIndex; } else { idx = add_entry( key ); if ( find_result.PrevIndex >= 0 ) { Entries[ find_result.PrevIndex ].Next = idx; } else { Hashes[ find_result.HashIndex ] = idx; } } Entries[ idx ].Value = value; if ( full() ) grow(); } sw slot( u64 key ) { for ( sw idx = 0; idx < Hashes.num(); ++idx ) if ( Hashes[ idx ] == key ) return idx; return -1; } Array< sw> Hashes; Array< Entry> Entries; protected: sw add_entry( u64 key ) { sw idx; Entry entry = { key, -1 }; idx = Entries.num(); Entries.append( entry ); return idx; } FindResult find( u64 key ) { FindResult result = { -1, -1, -1 }; if ( Hashes.num() > 0 ) { result.HashIndex = key % Hashes.num(); result.EntryIndex = Hashes[ result.HashIndex ]; while ( result.EntryIndex >= 0 ) { if ( Entries[ result.EntryIndex ].Key == key ) break; result.PrevIndex = result.EntryIndex; result.EntryIndex = Entries[ result.EntryIndex ].Next; } } return result; } b32 full() { return 0.75f * Hashes.num() < Entries.num(); } }; #pragma endregion Containers #pragma region Hashing u32 crc32( void const* data, sw len ); #pragma endregion Hashing #pragma region String // Constant string with length. struct StrC { sw Len; char const* Ptr; operator char const* () const { return Ptr; } }; #define txt_StrC( text ) \ (StrC){ sizeof( text ) - 1, text } StrC to_StrC( char const* str ) { return { str_len( str ), str }; } // Dynamic String // This is directly based off the ZPL string api. // They used a header pattern // I kept it for simplicty of porting but its not necessary to keep it that way. struct String { struct Header { AllocatorInfo Allocator; sw Length; sw Capacity; }; static String make( AllocatorInfo allocator, char const* str ) { sw length = str ? str_len( str ) : 0; return make_length( allocator, str, length ); } static String make( AllocatorInfo allocator, StrC str ) { return make_length( allocator, str.Ptr, str.Len ); } static String make_reserve( AllocatorInfo allocator, sw capacity ) { constexpr sw header_size = sizeof( Header ); s32 alloc_size = header_size + capacity + 1; void* allocation = alloc( allocator, alloc_size ); if ( allocation == nullptr ) return { nullptr }; mem_set( allocation, 0, alloc_size ); Header* header = rcast(Header*, allocation); header->Allocator = allocator; header->Capacity = capacity; header->Length = 0; String result = { (char*)allocation + header_size }; return result; } static String make_length( AllocatorInfo allocator, char const* str, sw length ) { constexpr sw header_size = sizeof( Header ); s32 alloc_size = header_size + length + 1; void* allocation = alloc( allocator, alloc_size ); if ( allocation == nullptr ) return { nullptr }; if ( ! str ) mem_set( allocation, 0, alloc_size ); Header& header = * rcast(Header*, allocation); header = { allocator, length, length }; String result = { rcast( char*, allocation) + header_size }; if ( length && str ) mem_copy( result, str, length ); result[ length ] = '\0'; return result; } static String fmt( AllocatorInfo allocator, char* buf, sw buf_size, char const* fmt, ... ); static String fmt_buf( AllocatorInfo allocator, char const* fmt, ... ); static String join( AllocatorInfo allocator, char const** parts, sw num_parts, char const* glue ) { String result = make( allocator, "" ); for ( sw idx = 0; idx < num_parts; ++idx ) { result.append( parts[ idx ] ); if ( idx < num_parts - 1 ) result.append( glue ); } return result; } static bool are_equal( String lhs, String rhs ) { if ( lhs.length() != rhs.length() ) return false; for ( sw idx = 0; idx < lhs.length(); ++idx ) if ( lhs[ idx ] != rhs[ idx ] ) return false; return true; } bool make_space_for( char const* str, sw add_len ) { sw available = avail_space(); // NOTE: Return if there is enough space left if ( available >= add_len ) { return true; } else { sw new_len, old_size, new_size; void* ptr; void* new_ptr; AllocatorInfo allocator = get_header().Allocator; Header* header = nullptr; new_len = length() + add_len; ptr = & get_header(); old_size = size_of( Header ) + length() + 1; new_size = size_of( Header ) + new_len + 1; new_ptr = resize( allocator, ptr, old_size, new_size ); if ( new_ptr == nullptr ) return false; header = zpl_cast( Header* ) new_ptr; header->Allocator = allocator; header->Capacity = new_len; Data = rcast( char*, header + 1 ); return str; } } bool append( char const* str ) { return append( str, str_len( str ) ); } bool append( char const* str, sw length ) { if ( sptr(str) > 0 ) { sw curr_len = this->length(); if ( ! make_space_for( str, length ) ) return false; Header& header = get_header(); mem_copy( Data + curr_len, str, length ); Data[ curr_len + length ] = '\0'; header.Length = curr_len + length; } return str; } bool append( StrC str) { return append( str.Ptr, str.Len ); } bool append( const String other ) { return append( other.Data, other.length() ); } bool append_fmt( char const* fmt, ... ); sw avail_space() const { Header const& header = * rcast( Header const*, Data - sizeof( Header )); return header.Capacity - header.Length; } sw capacity() const { Header const& header = * rcast( Header const*, Data - sizeof( Header )); return header.Capacity; } void clear() { get_header().Length = 0; } String duplicate( AllocatorInfo allocator ) { return make_length( allocator, Data, length() ); } void free() { if ( ! Data ) return; Header& header = get_header(); gen::free( header.Allocator, & header ); } Header& get_header() { return *(Header*)(Data - sizeof(Header)); } sw length() const { Header const& header = * rcast( Header const*, Data - sizeof( Header )); return header.Length; } void trim( char const* cut_set ) { sw len = 0; char* start_pos = Data; char* end_pos = Data + length() - 1; while ( start_pos <= end_pos && char_first_occurence( cut_set, *start_pos ) ) start_pos++; while ( end_pos > start_pos && char_first_occurence( cut_set, *end_pos ) ) end_pos--; len = scast( sw, ( start_pos > end_pos ) ? 0 : ( ( end_pos - start_pos ) + 1 ) ); if ( Data != start_pos ) mem_move( Data, start_pos, len ); Data[ len ] = '\0'; get_header().Length = len; } void trim_space() { return trim( " \t\r\n\v\f" ); } // For-range support char* begin() { return Data; } char* end() { Header const& header = * rcast( Header const*, Data - sizeof( Header )); return Data + header.Length; } operator bool() { return Data; } operator char* () { return Data; } operator char const* () const { return Data; } operator StrC() const { return { length(), Data }; } // Used with cached strings // Essentially makes the string a string view. String const& operator = ( String const& other ) const { if ( this == & other ) return *this; String& this_ = ccast( String, *this ); this_.Data = other.Data; return this_; } char& operator [] ( sw index ) { return Data[ index ]; } char const& operator [] ( sw index ) const { return Data[ index ]; } char* Data = nullptr; }; struct String_POD { char* Data; operator String() { return * rcast(String*, this); } }; static_assert( sizeof( String_POD ) == sizeof( String ), "String is not a POD" ); #pragma endregion String #pragma region File Handling typedef u32 FileMode; enum FileModeFlag { EFileMode_READ = bit( 0 ), EFileMode_WRITE = bit( 1 ), EFileMode_APPEND = bit( 2 ), EFileMode_RW = bit( 3 ), GEN_FILE_MODES = EFileMode_READ | EFileMode_WRITE | EFileMode_APPEND | EFileMode_RW, }; // NOTE: Only used internally and for the file operations enum SeekWhenceType { ESeekWhence_BEGIN = 0, ESeekWhence_CURRENT = 1, ESeekWhence_END = 2, }; enum FileError { EFileError_NONE, EFileError_INVALID, EFileError_INVALID_FILENAME, EFileError_EXISTS, EFileError_NOT_EXISTS, EFileError_PERMISSION, EFileError_TRUNCATION_FAILURE, EFileError_NOT_EMPTY, EFileError_NAME_TOO_LONG, EFileError_UNKNOWN, }; union FileDescriptor { void* p; sptr i; uptr u; }; typedef struct FileOperations FileOperations; #define GEN_FILE_OPEN_PROC( name ) FileError name( FileDescriptor* fd, FileOperations* ops, FileMode mode, char const* filename ) #define GEN_FILE_READ_AT_PROC( name ) b32 name( FileDescriptor fd, void* buffer, sw size, s64 offset, sw* bytes_read, b32 stop_at_newline ) #define GEN_FILE_WRITE_AT_PROC( name ) b32 name( FileDescriptor fd, void const* buffer, sw size, s64 offset, sw* bytes_written ) #define GEN_FILE_SEEK_PROC( name ) b32 name( FileDescriptor fd, s64 offset, SeekWhenceType whence, s64* new_offset ) #define GEN_FILE_CLOSE_PROC( name ) void name( FileDescriptor fd ) typedef GEN_FILE_OPEN_PROC( file_open_proc ); typedef GEN_FILE_READ_AT_PROC( FileReadProc ); typedef GEN_FILE_WRITE_AT_PROC( FileWriteProc ); typedef GEN_FILE_SEEK_PROC( FileSeekProc ); typedef GEN_FILE_CLOSE_PROC( FileCloseProc ); struct FileOperations { FileReadProc* read_at; FileWriteProc* write_at; FileSeekProc* seek; FileCloseProc* close; }; extern FileOperations const default_file_operations; typedef u64 FileTime; enum DirType { GEN_DIR_TYPE_FILE, GEN_DIR_TYPE_FOLDER, GEN_DIR_TYPE_UNKNOWN, }; struct DirInfo; struct DirEntry { char const* FileName; DirInfo* Info; u8 Type; }; struct DirInfo { char const* FullPath; DirEntry* Entries; // zpl_array // Internals char** Filenames; // zpl_array String Buffer; }; struct FileInfo { FileOperations Ops; FileDescriptor FD; b32 IsTemp; char const* Filename; FileTime LastWriteTime; DirEntry* Dir; }; enum FileStandardType { EFileStandard_INPUT, EFileStandard_OUTPUT, EFileStandard_ERROR, EFileStandard_COUNT, }; /** * Get standard file I/O. * @param std Check zpl_file_standard_type * @return File handle to standard I/O */ FileInfo* file_get_standard( FileStandardType std ); /** * Closes the file * @param file */ FileError file_close( FileInfo* file ); /** * Returns the currently opened file's name * @param file */ inline char const* file_name( FileInfo* file ) { return file->Filename ? file->Filename : ""; } /** * Opens a file using a specified mode * @param file * @param mode Access mode to use * @param filename */ FileError file_open_mode( FileInfo* file, FileMode mode, char const* filename ); /** * Seeks the file cursor from the beginning of file to a specific position * @param file * @param offset Offset to seek to */ GEN_DEF_INLINE s64 file_seek( FileInfo* file, s64 offset ); /** * Returns the length from the beginning of the file we've read so far * @param file * @return Our current position in file */ GEN_DEF_INLINE s64 file_tell( FileInfo* file ); /** * Writes to a file * @param file * @param buffer Buffer to read from * @param size Size to read */ b32 file_write( FileInfo* file, void const* buffer, sw size ); /** * Writes to file at a specific offset * @param file * @param buffer Buffer to read from * @param size Size to write * @param offset Offset to write to * @param bytes_written How much data we've actually written */ GEN_DEF_INLINE b32 file_write_at( FileInfo* file, void const* buffer, sw size, s64 offset ); /** * Writes to file safely * @param file * @param buffer Buffer to read from * @param size Size to write * @param offset Offset to write to * @param bytes_written How much data we've actually written */ GEN_DEF_INLINE b32 file_write_at_check( FileInfo* file, void const* buffer, sw size, s64 offset, sw* bytes_written ); GEN_IMPL_INLINE s64 file_seek( FileInfo* f, s64 offset ) { s64 new_offset = 0; if ( ! f->Ops.read_at ) f->Ops = default_file_operations; f->Ops.seek( f->FD, offset, ESeekWhence_BEGIN, &new_offset ); return new_offset; } GEN_IMPL_INLINE s64 file_tell( FileInfo* f ) { s64 new_offset = 0; if ( ! f->Ops.read_at ) f->Ops = default_file_operations; f->Ops.seek( f->FD, 0, ESeekWhence_CURRENT, &new_offset ); return new_offset; } GEN_IMPL_INLINE b32 file_write( FileInfo* f, void const* buffer, sw size ) { s64 cur_offset = file_tell( f ); b32 result = file_write_at( f, buffer, size, file_tell( f ) ); file_seek( f, cur_offset + size ); return result; } GEN_IMPL_INLINE b32 file_write_at( FileInfo* f, void const* buffer, sw size, s64 offset ) { return file_write_at_check( f, buffer, size, offset, NULL ); } GEN_IMPL_INLINE b32 file_write_at_check( FileInfo* f, void const* buffer, sw size, s64 offset, sw* bytes_written ) { if ( ! f->Ops.read_at ) f->Ops = default_file_operations; return f->Ops.write_at( f->FD, buffer, size, offset, bytes_written ); } #pragma endregion File Handling #pragma region Printing #ifndef GEN_PRINTF_MAXLEN # define GEN_PRINTF_MAXLEN 65536 #endif // NOTE: A locally persisting buffer is used internally char* str_fmt_buf( char const* fmt, ... ); char* str_fmt_buf_va( char const* fmt, va_list va ); sw str_fmt_va( char* str, sw n, char const* fmt, va_list va ); sw str_fmt_out_va( char const* fmt, va_list va ); sw str_fmt_out_err( char const* fmt, ... ); sw str_fmt_out_err_va( char const* fmt, va_list va ); sw str_fmt_file_va( FileInfo* f, char const* fmt, va_list va ); #pragma endregion Printing namespace Memory { // NOTE: This limits the size of the string that can be read from a file or generated to 10 megs. // If you are generating a string larger than this, increase the size of the bucket here. constexpr uw BucketSize = megabytes(10); // Global allocator used for data with process lifetime. extern AllocatorInfo GlobalAllocator; // Heap allocator is being used for now to isolate errors from being memory related (tech debt till ready to address) // #define g_allocator heap() void setup(); void cleanup(); } constexpr char const* Msg_Invalid_Value = "INVALID VALUE PROVIDED"; inline sw log_fmt(char const* fmt, ...) { sw res; va_list va; va_start(va, fmt); res = str_fmt_out_va(fmt, va); va_end(va); return res; } inline sw fatal(char const* fmt, ...) { local_persist thread_local char buf[GEN_PRINTF_MAXLEN] = { 0 }; va_list va; #if Build_Debug va_start(va, fmt); str_fmt_va(buf, GEN_PRINTF_MAXLEN, fmt, va); va_end(va); assert_crash(buf); return -1; #else va_start(va, fmt); str_fmt_out_err_va( fmt, va); va_end(va); exit(1); return -1; #endif } // gen namespace } //END: GENCPP_PROVIDE_DEPENDENCIES #endif #pragma endregion GENCPP DEPENDENCIES namespace gen { using LogFailType = sw(*)(char const*, ...); // By default this library will either crash or exit if an error is detected while generating codes. // Even if set to not use fatal, fatal will still be used for memory failures as the library is unusable when they occur. # ifdef GEN_DONT_USE_FATAL constexpr LogFailType log_failure = log_fmt; # else constexpr LogFailType log_failure = fatal; # endif namespace ECode { # define Define_Types \ Entry( Untyped ) \ Entry( Comment ) \ Entry( Access_Private ) \ Entry( Access_Protected ) \ Entry( Access_Public ) \ Entry( Attributes ) \ Entry( Class ) \ Entry( Class_Fwd ) \ Entry( Class_Body ) \ Entry( Enum ) \ Entry( Enum_Fwd ) \ Entry( Enum_Body ) \ Entry( Enum_Class ) \ Entry( Enum_Class_Fwd ) \ Entry( Execution ) \ Entry( Export_Body ) \ Entry( Extern_Linkage ) \ Entry( Extern_Linkage_Body ) \ Entry( Friend ) \ Entry( Function ) \ Entry( Function_Fwd ) \ Entry( Function_Body ) \ Entry( Global_Body ) \ Entry( Module ) \ Entry( Namespace ) \ Entry( Namespace_Body ) \ Entry( Operator ) \ Entry( Operator_Fwd ) \ Entry( Operator_Member ) \ Entry( Operator_Member_Fwd ) \ Entry( Operator_Cast ) \ Entry( Operator_Cast_Fwd ) \ Entry( Parameters ) \ Entry( Preprocessor_Include ) \ Entry( Specifiers ) \ Entry( Struct ) \ Entry( Struct_Fwd ) \ Entry( Struct_Body ) \ Entry( Template ) \ Entry( Typedef ) \ Entry( Typename ) \ Entry( Union ) \ Entry( Union_Body) \ Entry( Using ) \ Entry( Using_Namespace ) \ Entry( Variable ) enum Type : u32 { # define Entry( Type ) Type, Define_Types # undef Entry Num_Types, Invalid }; inline StrC to_str( Type type ) { static StrC lookup[Num_Types] = { # define Entry( Type ) { sizeof(stringize(Type)), stringize(Type) }, Define_Types # undef Entry }; return lookup[ type ]; } # undef Define_Types } using CodeT = ECode::Type; // Used to indicate if enum definitoin is an enum class or regular enum. enum class EnumT : u8 { Regular, Class }; constexpr EnumT EnumClass = EnumT::Class; constexpr EnumT EnumRegular = EnumT::Regular; namespace EOperator { # define Define_Operators \ Entry( Assign, = ) \ Entry( Assign_Add, += ) \ Entry( Assign_Subtract, -= ) \ Entry( Assign_Multiply, *= ) \ Entry( Assign_Divide, /= ) \ Entry( Assign_Modulo, %= ) \ Entry( Assign_BAnd, &= ) \ Entry( Assign_BOr, |= ) \ Entry( Assign_BXOr, ^= ) \ Entry( Assign_LShift, <<= ) \ Entry( Assign_RShift, >>= ) \ Entry( Increment, ++ ) \ Entry( Decrement, -- ) \ Entry( Unary_Plus, + ) \ Entry( Unary_Minus, - ) \ Entry( UnaryNot, ! ) \ Entry( Add, + ) \ Entry( Subtract, - ) \ Entry( Multiply, * ) \ Entry( Divide, / ) \ Entry( Modulo, % ) \ Entry( BNot, ~ ) \ Entry( BAnd, & ) \ Entry( BOr, | ) \ Entry( BXOr, ^ ) \ Entry( LShift, << ) \ Entry( RShift, >> ) \ Entry( LAnd, && ) \ Entry( LOr, || ) \ Entry( LEqual, == ) \ Entry( LNot, != ) \ Entry( Lesser, < ) \ Entry( Greater, > ) \ Entry( LesserEqual, <= ) \ Entry( GreaterEqual, >= ) \ Entry( Subscript, [] ) \ Entry( Indirection, * ) \ Entry( AddressOf, & ) \ Entry( MemberOfPointer, -> ) \ Entry( PtrToMemOfPtr, ->* ) \ Entry( FunctionCall, () ) enum Type : u32 { # define Entry( Type_, Token_ ) Type_, Define_Operators # undef Entry Comma, Num_Ops, Invalid }; inline char const* to_str( Type op ) { local_persist char const* lookup[ Num_Ops ] = { # define Entry( Type_, Token_ ) stringize(Token_), Define_Operators # undef Entry "," }; return lookup[ op ]; } # undef Define_Operators } using OperatorT = EOperator::Type; namespace ESpecifier { /* Note: The following are handled separately: attributes alignas */ # define Define_Specifiers \ Entry( Invalid, INVALID ) \ Entry( Const, const ) \ Entry( Consteval, consteval ) \ Entry( Constexpr, constexpr ) \ Entry( Constinit, constinit ) \ Entry( External_Linkage, extern ) \ Entry( Global, global ) \ Entry( Inline, inline ) \ Entry( Internal_Linkage, internal ) \ Entry( Local_Persist, local_persist ) \ Entry( Mutable, mutable ) \ Entry( Ptr, * ) \ Entry( Ref, & ) \ Entry( Register, register ) \ Entry( RValue, && ) \ Entry( Static_Member, static ) \ Entry( Thread_Local, thread_local ) \ Entry( Volatile, volatile ) enum Type : u32 { # define Entry( Specifier, Code ) Specifier, Define_Specifiers # undef Entry Num_Specifiers, }; // Specifier to string inline StrC to_str( Type specifier ) { local_persist StrC lookup[ Num_Specifiers ] = { # pragma push_macro( "global" ) # pragma push_macro( "internal" ) # pragma push_macro( "local_persist" ) # define global global # define internal internal # define local_persist local_persist # define Entry( Spec_, Code_ ) { sizeof(stringize(Code_)), stringize(Code_) }, Define_Specifiers # undef Entry # pragma pop_macro( "global" ) # pragma pop_macro( "internal" ) # pragma pop_macro( "local_persist" ) }; return lookup[ specifier ]; } inline Type to_type( StrC str ) { local_persist u32 keymap[ Num_Specifiers ]; do_once_start for ( u32 index = 0; index < Num_Specifiers; index++ ) { StrC enum_str = to_str( (Type)index ); // We subtract 1 to remove the null terminator // This is because the tokens lexed are not null terminated. keymap[index] = crc32( enum_str.Ptr, enum_str.Len - 1); } do_once_end u32 hash = crc32( str.Ptr, str.Len ); for ( u32 index = 0; index < Num_Specifiers; index++ ) { if ( keymap[index] == hash ) return (Type)index; } return Invalid; } # undef Define_Specifiers } using SpecifierT = ESpecifier::Type; enum class AccessSpec : u32 { Default, Public, Protected, Private, Num_AccessSpec, Invalid, }; inline char const* to_str( AccessSpec type ) { local_persist char const* lookup[ (u32)AccessSpec::Num_AccessSpec ] = { "", "public", "protected", "private", }; if ( type > AccessSpec::Public ) return "Invalid"; return lookup[ (u32)type ]; } enum class ModuleFlag : u32 { None = 0, Export = bit(0), Import = bit(1), // Private = bit(2), Num_ModuleFlags, Invalid, }; ModuleFlag operator|( ModuleFlag A, ModuleFlag B) { return (ModuleFlag)( (u32)A | (u32)B ); } /* Predefined attributes Used for the parser constructors to identify non-standard attributes */ namespace Attribute { #if defined(GEN_SYSTEM_WINDOWS) || defined( __CYGWIN__ ) # define GEN_API_ # define GEN_API_Export_Code __declspec(dllexport) # define GEN_API_Import_Code __declspec(dllimport) # define GEN_Attribute_Keyword __declspec constexpr char const* API_Export = stringize( GEN_API_Export_Code ); constexpr char const* API_Import = stringize( GEN_API_Import_Code ); constexpr char const* Keyword = stringize( GEN_Attribute_Keyword); #elif GEN_HAS_ATTRIBUTE( visibility ) || GEN_GCC_VERSION_CHECK( 3, 3, 0 ) || GEN_INTEL_VERSION_CHECK( 13, 0, 0 ) # define GEN_API_Export_Code __attribute__ ((visibility ("default"))) # define GEN_API_Import_Code __attribute__ ((visibility ("default"))) # define GEN_Attribute_Keyword __attribute__ constexpr char const* API_Export = txt( GEN_API_Export_Code ); constexpr char const* API_Import = txt( GEN_API_Import_Code ); constexpr char const* Keyword = txt( GEN_Attribute_Keyword); #else # define GEN_API_Export_Code # define GEN_API_Import_Code # define GEN_Attribute_Keyword constexpr char const* API_Export = ""; constexpr char const* API_Import = ""; constexpr char const* Keyword = ""; #endif } #pragma region Data Structures // Implements basic string interning. Data structure is based off the ZPL Hashtable. using StringTable = HashTable; // Represents strings cached with the string table. // Should never be modified, if changed string is desired, cache_string( str ) another. using StringCached = String const; struct AST; struct Code; // These are to offer ease of use and optionally strong type safety for the AST. struct CodeAttributes; struct CodeComment; struct CodeClass; struct CodeExec; struct CodeEnum; struct CodeExtern; struct CodeInclude; struct CodeFriend; struct CodeFn; struct CodeModule; struct CodeNamespace; struct CodeOperator; struct CodeOpCast; struct CodeParams; struct CodeSpecifiers; struct CodeStruct; struct CodeTemplate; struct CodeType; struct CodeTypedef; struct CodeUnion; struct CodeUsing; struct CodeUsingNamespace; struct CodeVar; struct CodeBody; struct CodeClassBody; struct CodeEnumBody; struct CodeExportBody; struct CodeExternBody; struct CodeFnBody; struct CodeGlobalBody; struct CodeNamespaceBody; struct CodeStructBody; struct CodeUnionBody; // Desired width of the AST data structure. constexpr u32 AST_POD_Size = 256; namespace EEntry { enum Type : u32 { Entry_Array_Expression, Entry_Attributes, Entry_Body, Entry_Parameters, Entry_Parameter_Type, Entry_Parent, Entry_Return_Type, Entry_Specifiers, Entry_Value, }; } using EntryT = EEntry::Type; /* Simple AST POD with functionality to seralize into C++ syntax. */ struct AST { # pragma region Member Functions void add_entry( AST* other ); AST* duplicate(); AST*& entry( u32 idx ); bool has_entries(); bool is_equal( AST* other ); s32 num_entries(); // Serialization char const* debug_str() { char const* fmt = stringize( \nCode Debug: \nType : %s \nParent : %s \nName : %s \nComment : %s ); // These should be used immediately in a log. // Thus if its desired to keep the debug str // for multiple calls to bprintf, // allocate this to proper string. return str_fmt_buf( fmt , type_str() , Parent ? Parent->Name : "" , Name ? Name : "" ); } String to_string(); char const* type_str() { return ECode::to_str( Type ); } // Validation bool validate_body(); operator Code(); template< class Type > Type cast() { return (Type) { this }; } # pragma endregion Member Functions constexpr static uw ArrS_Cap = ( AST_POD_Size - sizeof(AST*) // Parent - sizeof(StringCached) // Name - sizeof(CodeT) // Type - sizeof(OperatorT) // Op - sizeof(ModuleFlag) // ModuleFlags - sizeof(AccessSpec) // ParentAccess - sizeof(u32) // StaticIndex - sizeof(bool) // DynamicEntries - sizeof(u8) * 3 ) // _Align_Pad / sizeof(AST*); constexpr static uw ArrSpecs_Cap = ArrS_Cap * (sizeof(AST*) / sizeof(SpecifierT)); # define Using_AST_POD \ union { \ AST* ArrStatic[AST::ArrS_Cap]; \ Array< AST* > ArrDyn; \ StringCached Content; \ SpecifierT ArrSpecs[AST::ArrSpecs_Cap]; \ }; \ AST* Parent; \ StringCached Name; \ CodeT Type; \ OperatorT Op; \ ModuleFlag ModuleFlags; \ AccessSpec ParentAccess; \ u32 StaticIndex; \ bool DynamicEntries; \ u8 _Align_Pad[3]; Using_AST_POD }; struct AST_Experimental { using AST = AST_Experimental; static constexpr uw ArrSpecs_Cap = sizeof( AST* ) * 9; // Should only be used for body types. void add( AST* other ) { Back->Right = other; Back = other; } union { struct { AST* ArrExpr; AST* Attributes; AST* Parameters; AST* ParameterType; AST* ParentType; AST* ReturnType; AST* Specifiers; AST* Value; }; struct { AST* Left; AST* Right; }; struct { AST* Front; AST* Back; }; StringCached Content; SpecifierT ArrSpecs[ArrSpecs_Cap]; }; AST* Parent; StringCached Name; CodeT Type; OperatorT Op; ModuleFlag ModuleFlags; AccessSpec ParentAccess; u32 NumEntries; }; struct AST_POD { Using_AST_POD # undef Using_CodePOD }; // Its intended for the AST to have equivalent size to its POD. // All extra functionality within the AST namespace should just be syntatic sugar. static_assert( sizeof(AST) == sizeof(AST_POD), "ERROR: AST IS NOT POD" ); static_assert( sizeof(AST_POD) == AST_POD_Size, "ERROR: AST POD is not size of AST_POD_Size" ); /* AST* typedef as to not constantly have to add the '*' as this is written often.. */ struct Code { # pragma region Statics // Used to identify ASTs that should always be duplicated. (Global constant ASTs) static Code Global; // Used to identify invalid generated code. static Code Invalid; # pragma endregion Statics #define Using_Code \ void set_global() \ { \ if ( ast == nullptr ) \ { \ log_failure("Code::set_global: Cannot set code as global, AST is null!"); \ return; \ } \ \ ast->Parent = Code::Global.ast; \ } \ bool is_valid() \ { \ return ast != nullptr && ast->Type != CodeT::Invalid; \ } \ bool operator ==( Code other ) \ { \ return ast == other.ast; \ } \ bool operator !=( Code other ) \ { \ return ast != other.ast; \ } \ AST* operator->() \ { \ if ( ast == nullptr ) \ { \ log_failure("Attempt to dereference a nullptr!"); \ return nullptr; \ } \ \ return ast; \ } \ operator AST*() \ { \ return ast; \ } \ AST* ast Using_Code; #define GEN_ENFORCE_STRONG_CODE_TYPES #ifdef GEN_ENFORCE_STRONG_CODE_TYPES #define operator explicit operator #endif operator CodeAttributes() const; operator CodeComment() const; operator CodeClass() const; operator CodeExec() const; operator CodeEnum() const; operator CodeExtern() const; operator CodeInclude() const; operator CodeFriend() const; operator CodeFn() const; operator CodeModule() const; operator CodeNamespace() const; operator CodeOperator() const; operator CodeOpCast() const; operator CodeParams() const; operator CodeSpecifiers() const; operator CodeStruct() const; operator CodeTemplate() const; operator CodeType() const; operator CodeTypedef() const; operator CodeUnion() const; operator CodeUsing() const; operator CodeUsingNamespace() const; operator CodeVar() const; operator CodeBody() const; operator CodeClassBody() const; operator CodeEnumBody() const; operator CodeExportBody() const; operator CodeExternBody() const; operator CodeFnBody() const; operator CodeGlobalBody() const; operator CodeNamespaceBody() const; operator CodeStructBody() const; operator CodeUnionBody() const; #undef operator }; struct Code_POD { AST* ast; }; static_assert( sizeof(Code) == sizeof(Code_POD), "ERROR: Code is not POD" ); #ifdef GEN_ENFORCE_STRONG_CODE_TYPES // Used when the its desired when omission is allowed in a definition. #define NoCode { nullptr } #define CodeInvalid { Code::Invalid.ast } #else // Used when the its desired when omission is allowed in a definition. constexpr Code NoCode = { nullptr }; constexpr Code CodeInvalid = Code::Invalid; #endif #pragma region Code Types #define Define_ParentCast \ operator Code() \ { \ return * rcast( Code*, this ); \ } #define Define_CodeBodyType( Name ) \ struct Code##Name \ { \ Using_Code; \ Define_ParentCast; \ \ Code* begin() \ { \ return rcast( Code*, ast->entry(0)); \ } \ Code* end() \ { \ return rcast( Code*, ast->entry( ast->num_entries() ) ); \ } \ } Define_CodeBodyType( Body ); Define_CodeBodyType( ClassBody ); Define_CodeBodyType( EnumBody ); Define_CodeBodyType( ExportBody ); Define_CodeBodyType( ExternBody ); Define_CodeBodyType( FnBody ); Define_CodeBodyType( GlobalBody ); Define_CodeBodyType( NamespaceBody ); Define_CodeBodyType( StructBody ); Define_CodeBodyType( UnionBody ); struct CodeAttributes { Using_Code; Define_ParentCast; }; struct CodeComment { Using_Code; Define_ParentCast; }; struct CodeClass { Using_Code; Define_ParentCast; CodeAttributes attributes(); CodeClassBody body(); CodeType parent(); }; struct CodeExec { Using_Code; Define_ParentCast; }; struct CodeEnum { Using_Code; Define_ParentCast; CodeAttributes attributes(); CodeEnumBody body(); CodeType type(); }; struct CodeExtern { Using_Code; Define_ParentCast; CodeExternBody body(); }; struct CodeInclude { Using_Code; Define_ParentCast; }; struct CodeFriend { Using_Code; Define_ParentCast; Code symbol(); }; struct CodeFn { Using_Code; Define_ParentCast; CodeAttributes attributes(); CodeFnBody body(); CodeParams params(); CodeType return_type(); CodeSpecifiers specifiers(); }; struct CodeModule { Using_Code; Define_ParentCast; }; struct CodeNamespace { Using_Code; Define_ParentCast; CodeNamespaceBody body(); }; struct CodeUsingNamespace { Using_Code; Define_ParentCast; }; struct CodeOperator { Using_Code; Define_ParentCast; CodeAttributes attributes(); CodeFnBody body(); CodeParams params(); CodeType return_type(); CodeSpecifiers specifiers(); }; struct CodeOpCast { Using_Code; Define_ParentCast; CodeFnBody body(); CodeType type(); }; struct CodeParams { Using_Code; Define_ParentCast; void add_param( CodeParams param ); bool has_params(); CodeParams get( s32 idx ); s32 num(); CodeType type(); }; struct CodeSpecifiers { Using_Code; Define_ParentCast; SpecifierT begin(); SpecifierT end(); bool add( SpecifierT spec ); s32 has( SpecifierT spec ); }; struct CodeStruct { Using_Code; Define_ParentCast; CodeAttributes attributes(); CodeStructBody body(); CodeType parent(); }; struct CodeTemplate { Using_Code; Define_ParentCast; Code definition(); Code params(); }; struct CodeType { Using_Code; Define_ParentCast; Code array_expr(); CodeAttributes attributes(); CodeSpecifiers specifiers(); }; struct CodeTypedef { Using_Code; Define_ParentCast; CodeAttributes attributes(); CodeType type(); }; struct CodeUnion { Using_Code; Define_ParentCast; CodeAttributes attributes(); CodeUnionBody body(); }; struct CodeUsing { Using_Code; Define_ParentCast; Code attributes(); Code type(); }; struct CodeVar { Using_Code; Define_ParentCast; CodeAttributes attributes(); CodeSpecifiers specifiers(); CodeType type(); Code value(); }; #undef Define_CodeBodyType #undef Define_ParentCast #undef Using_Code #pragma endregion Code Types #pragma endregion Data Structures #pragma region Gen Interface // Initialize the library. // This currently just initializes the CodePool. void init(); // Currently manually free's the arenas, code for checking for leaks. // However on Windows at least, it doesn't need to occur as the OS will clean up after the process. void deinit(); // Used internally to retrive or make string allocations. // Strings are stored in a series of string arenas of fixed size (SizePer_StringArena) StringCached get_cached_string( StrC str ); /* This provides a fresh Code AST. The gen interface use this as their method from getting a new AST object from the CodePool. Use this if you want to make your own API for formatting the supported Code Types. */ Code make_code(); // This provides a fresh Code AST array for the entries field of the AST. // This is done separately from the regular CodePool allocator. Array< AST* > make_code_entries(); // Set these before calling gen's init() procedure. // Data void set_allocator_data_arrays ( AllocatorInfo data_array_allocator ); void set_allocator_code_pool ( AllocatorInfo pool_allocator ); void set_allocator_code_enrties_arena( AllocatorInfo pool_allocator ); void set_allocator_string_arena ( AllocatorInfo string_allocator ); void set_allocator_string_table ( AllocatorInfo string_allocator ); void set_allocator_type_table ( AllocatorInfo type_reg_allocator ); # pragma region Upfront CodeAttributes def_attributes( StrC content ); CodeComment def_comment ( StrC content ); CodeClass def_class( StrC name , Code body = NoCode , CodeType parent = NoCode, AccessSpec access = AccessSpec::Default , CodeAttributes attributes = NoCode , ModuleFlag mflags = ModuleFlag::None ); CodeEnum def_enum( StrC , Code body = NoCode, CodeType type = NoCode , EnumT specifier = EnumRegular, CodeAttributes attributes = NoCode , ModuleFlag mflags = ModuleFlag::None ); CodeExec def_execution ( StrC content ); CodeExtern def_extern_link( StrC name, Code body, ModuleFlag mflags = ModuleFlag::None ); CodeFriend def_friend ( Code symbol ); CodeFn def_function( StrC name , CodeParams params = NoCode, CodeType ret_type = NoCode, CodeFnBody body = NoCode , CodeSpecifiers specifiers = NoCode, CodeAttributes attributes = NoCode , ModuleFlag mflags = ModuleFlag::None ); CodeInclude def_include ( StrC content ); CodeModule def_module ( StrC name, ModuleFlag mflags = ModuleFlag::None ); CodeNamespace def_namespace( StrC name, Code body, ModuleFlag mflags = ModuleFlag::None ); CodeOperator def_operator( OperatorT op , CodeParams params = NoCode, CodeType ret_type = NoCode, Code body = NoCode , CodeSpecifiers specifiers = NoCode, CodeAttributes attributes = NoCode , ModuleFlag mflags = ModuleFlag::None ); CodeOpCast def_operator_cast( Code type, Code body = NoCode ); CodeParams def_param ( Code type, StrC name, Code value = NoCode ); CodeSpecifiers def_specifier( SpecifierT specifier ); CodeStruct def_struct( StrC name , Code body , CodeType parent = NoCode, AccessSpec access = AccessSpec::Default , CodeAttributes attributes = NoCode , ModuleFlag mflags = ModuleFlag::None ); CodeTemplate def_template( CodeParams params, Code definition, ModuleFlag mflags = ModuleFlag::None ); CodeType def_type ( StrC name, Code arrayexpr = NoCode, CodeSpecifiers specifiers = NoCode, CodeAttributes attributes = NoCode ); CodeTypedef def_typedef( StrC name, CodeType type, CodeAttributes attributes = NoCode, ModuleFlag mflags = ModuleFlag::None ); CodeUnion def_union( StrC name, Code body, CodeAttributes attributes = NoCode, ModuleFlag mflags = ModuleFlag::None ); CodeUsing def_using( StrC name, CodeType type = NoCode , CodeAttributes attributess = NoCode , ModuleFlag mflags = ModuleFlag::None ); CodeUsingNamespace def_using_namespace( StrC name ); CodeVar def_variable( CodeType type, StrC name, Code value = NoCode , CodeSpecifiers specifiers = NoCode, CodeAttributes attributes = NoCode , ModuleFlag mflags = ModuleFlag::None ); // Constructs an empty body. Use AST::validate_body() to check if the body is was has valid entries. CodeBody def_body( CodeT type ); // There are two options for defining a struct body, either varadically provided with the args macro to auto-deduce the arg num, /// or provide as an array of Code objects. CodeClassBody def_class_body ( s32 num, ... ); CodeClassBody def_class_body ( s32 num, Code* codes ); CodeEnumBody def_enum_body ( s32 num, ... ); CodeEnumBody def_enum_body ( s32 num, Code* codes ); CodeExportBody def_export_body ( s32 num, ... ); CodeExportBody def_export_body ( s32 num, Code* codes); CodeExternBody def_extern_link_body( s32 num, ... ); CodeExternBody def_extern_link_body( s32 num, Code* codes ); CodeFnBody def_function_body ( s32 num, ... ); CodeFnBody def_function_body ( s32 num, Code* codes ); CodeGlobalBody def_global_body ( s32 num, ... ); CodeGlobalBody def_global_body ( s32 num, Code* codes ); CodeNamespace def_namespace_body ( s32 num, ... ); CodeNamespace def_namespace_body ( s32 num, Code* codes ); CodeParams def_params ( s32 num, ... ); CodeParams def_params ( s32 num, CodeParams* params ); CodeSpecifiers def_specifiers ( s32 num, ... ); CodeSpecifiers def_specifiers ( s32 num, SpecifierT* specs ); CodeStructBody def_struct_body ( s32 num, ... ); CodeStructBody def_struct_body ( s32 num, Code* codes ); CodeUnionBody def_union_body ( s32 num, ... ); CodeUnionBody def_union_body ( s32 num, Code* codes ); # pragma endregion Upfront # pragma region Parsing # ifdef GEN_FEATURE_PARSING CodeClass parse_class ( StrC class_def ); CodeEnum parse_enum ( StrC enum_def ); CodeExportBody parse_export_body ( StrC export_def ); CodeExtern parse_extern_link ( StrC exten_link_def); CodeFriend parse_friend ( StrC friend_def ); CodeFn parse_function ( StrC fn_def ); CodeGlobalBody parse_global_body ( StrC body_def ); CodeNamespace parse_namespace ( StrC namespace_def ); CodeOperator parse_operator ( StrC operator_def ); CodeOpCast parse_operator_cast( StrC operator_def ); CodeStruct parse_struct ( StrC struct_def ); CodeTemplate parse_template ( StrC template_def ); CodeType parse_type ( StrC type_def ); CodeTypedef parse_typedef ( StrC typedef_def ); CodeUnion parse_union ( StrC union_def ); CodeUsing parse_using ( StrC using_def ); CodeVar parse_variable ( StrC var_def ); # endif # pragma endregion Parsing # pragma region Untyped text sw token_fmt_va( char* buf, uw buf_size, s32 num_tokens, va_list va ); StrC token_fmt_impl( sw, ... ); Code untyped_str ( StrC content); Code untyped_fmt ( char const* fmt, ... ); Code untyped_token_fmt( char const* fmt, s32 num_tokens, ... ); # pragma endregion Untyped text struct Builder { FileInfo File; String Buffer; void print( Code ); void print_fmt( char const* fmt, ... ); bool open( char const* path ); void write(); }; #if defined(GEN_FEATURE_EDITOR) || defined(GEN_FEATURE_SCANNER) struct SymbolInfo { StringCached File; char const* Marker; Code Signature; }; #endif #ifdef GEN_FEATURE_EDITOR struct Policy { // Nothing for now. }; enum class SymbolType : u32 { Code, Line, Marker }; struct Editor { enum RequestType : u32 { Add, Replace, Remove }; struct SymbolData { Policy Policy; SymbolInfo Info; }; struct RequestEntry { union { SymbolData Symbol; String Specification; }; RequestType Type; }; struct Receipt { StringCached File; Code Found; Code Written; bool Result; }; static AllocatorInfo Allocator; static void set_allocator( AllocatorInfo allocator ); Array(FileInfo) Files; String Buffer; Array(RequestEntry) Requests; void add_files( s32 num, char const** files ); void add ( SymbolInfo definition, Policy policy, Code to_inject ); void remove ( SymbolInfo definition, Policy policy ); void replace( SymbolInfo definition, Policy policy, Code to_replace); # ifdef GEN_FEATURE_EDITOR_REFACTOR void refactor( char const* file_path, char const* specification_path ); # endif bool process_requests( Array(Receipt) out_receipts ); }; #endif #ifdef GEN_FEATURE_SCANNER struct Scanner { struct RequestEntry { SymbolInfo Info; }; struct Receipt { StringCached File; Code Defintion; bool Result; }; AllocatorInfo MemAlloc; static void set_allocator( AllocatorInfo allocator ); Array(FileInfo) Files; String Buffer; Array(RequestEntry) Requests; void add_files( s32 num, char const** files ); void add( SymbolInfo signature, Policy policy ); bool process_requests( Array(Receipt) out_receipts ); }; #endif #pragma endregion Gen Interface } #pragma region Macros # define gen_main main # define __ NoCode // Convienence for defining any name used with the gen api. // Lets you provide the length and string literal to the functions without the need for the DSL. # define name( Id_ ) { sizeof(stringize( Id_ )) - 1, stringize(Id_) } // Same as name just used to indicate intention of literal for code instead of names. # define code( ... ) { sizeof(stringize(__VA_ARGS__)) - 1, stringize( __VA_ARGS__ ) } # define args( ... ) num_args( __VA_ARGS__ ), __VA_ARGS__ # define code_str( ... ) gen::untyped_str( code( __VA_ARGS__ ) ) # define code_fmt( ... ) gen::untyped_str( token_fmt( __VA_ARGS__ ) ) // Takes a format string (char const*) and a list of tokens (StrC) and returns a StrC of the formatted string. # define token_fmt( ... ) gen::token_fmt_impl( (num_args( __VA_ARGS__ ) + 1) / 2, __VA_ARGS__ ) #pragma endregion Macros #pragma region Constants #ifdef GEN_DEFINE_LIBRARY_CODE_CONSTANTS namespace gen { // Predefined typename codes. Are set to readonly and are setup during gen::init() extern CodeType t_b32; extern CodeType t_s8; extern CodeType t_s16; extern CodeType t_s32; extern CodeType t_s64; extern CodeType t_u8; extern CodeType t_u16; extern CodeType t_u32; extern CodeType t_u64; extern CodeType t_sw; extern CodeType t_uw; extern CodeType t_f32; extern CodeType t_f64; } #endif namespace gen { // These constexprs are used for allocation behavior of data structures // or string handling while constructing or serializing. // Change them to suit your needs. constexpr s32 InitSize_DataArrays = 16; constexpr s32 InitSize_StringTable = megabytes(4); constexpr s32 InitSize_TypeTable = megabytes(4); constexpr s32 CodePool_NumBlocks = 4096; constexpr s32 InitSize_CodeEntiresArray = 512; constexpr s32 SizePer_CodeEntriresArena = megabytes(16); constexpr s32 SizePer_StringArena = megabytes(32); constexpr s32 MaxCommentLineLength = 1024; constexpr s32 MaxNameLength = 128; constexpr s32 MaxUntypedStrLength = kilobytes(640); constexpr s32 StringTable_MaxHashLength = kilobytes(1); extern CodeType t_auto; extern CodeType t_void; extern CodeType t_int; extern CodeType t_bool; extern CodeType t_char; extern CodeType t_wchar_t; extern CodeType t_class; extern CodeType t_typename; extern Code access_public; extern Code access_protected; extern Code access_private; extern Code module_global_fragment; extern Code module_private_fragment; extern Code pragma_once; extern CodeSpecifiers spec_const; extern CodeSpecifiers spec_consteval; extern CodeSpecifiers spec_constexpr; extern CodeSpecifiers spec_constinit; extern CodeSpecifiers spec_extern_linkage; extern CodeSpecifiers spec_global; extern CodeSpecifiers spec_inline; extern CodeSpecifiers spec_internal_linkage; extern CodeSpecifiers spec_local_persist; extern CodeSpecifiers spec_mutable; extern CodeSpecifiers spec_ptr; extern CodeSpecifiers spec_ref; extern CodeSpecifiers spec_register; extern CodeSpecifiers spec_rvalue; extern CodeSpecifiers spec_static_member; extern CodeSpecifiers spec_thread_local; extern CodeSpecifiers spec_volatile; } #pragma endregion Constants #pragma region Inlines namespace gen { void AST::add_entry( AST* other ) { AST* to_add = other->Parent ? other->duplicate() : other; if (DynamicEntries) ArrDyn.append( to_add ); else { if ( StaticIndex < ArrS_Cap ) { ArrStatic[StaticIndex] = to_add; StaticIndex++; } else { ArrDyn = make_code_entries(); s32 index = 0; do { ArrDyn.append( ArrStatic[index] ); } while ( StaticIndex--, StaticIndex ); ArrDyn.append( to_add ); } } to_add->Parent = this; } inline bool AST::has_entries() { return num_entries(); } inline AST*& AST::entry( u32 idx ) { return DynamicEntries ? ArrDyn[ idx ] : ArrStatic[ idx ]; } inline s32 AST::num_entries() { return DynamicEntries ? ArrDyn.num() : StaticIndex; } inline AST::operator Code() { return { this }; } inline CodeParams CodeParams::get( s32 index ) { if ( index <= 0 ) return * this; return (CodeParams){ ast->entry( index + 1 ) }; } inline s32 CodeParams::num() { // The first entry (which holds the type) represents the first parameter. return ast->num_entries(); } inline bool CodeSpecifiers::add( SpecifierT spec ) { if ( ast->StaticIndex == AST::ArrSpecs_Cap ) { log_failure("AST::add_specifier: Attempted to add over %d specifiers to a specifiers AST!", AST::ArrSpecs_Cap ); return false; } ast->ArrSpecs[ ast->StaticIndex ] = spec; ast->StaticIndex++; return true; } inline s32 CodeSpecifiers::has( SpecifierT spec ) { for ( s32 idx = 0; idx < ast->StaticIndex; idx++ ) { if ( ast->ArrSpecs[ ast->StaticIndex ] == spec ) return idx; } return -1; } #pragma region Operater Cast Impl #define Define_CodeCast( type ) \ inline Code::operator type() const \ { \ return * rcast( type*, ast ); \ } Define_CodeCast( CodeAttributes ); Define_CodeCast( CodeComment ); Define_CodeCast( CodeClass ); Define_CodeCast( CodeExec ); Define_CodeCast( CodeEnum ); Define_CodeCast( CodeExtern ); Define_CodeCast( CodeInclude ); Define_CodeCast( CodeFriend ); Define_CodeCast( CodeFn ); Define_CodeCast( CodeModule ); Define_CodeCast( CodeNamespace ); Define_CodeCast( CodeOperator ); Define_CodeCast( CodeOpCast ); Define_CodeCast( CodeParams ); Define_CodeCast( CodeSpecifiers ); Define_CodeCast( CodeStruct ); Define_CodeCast( CodeTemplate ); Define_CodeCast( CodeType ); Define_CodeCast( CodeTypedef ); Define_CodeCast( CodeUnion ); Define_CodeCast( CodeUsing ); Define_CodeCast( CodeUsingNamespace ); Define_CodeCast( CodeVar ); Define_CodeCast( CodeBody); Define_CodeCast( CodeClassBody ); Define_CodeCast( CodeEnumBody ); Define_CodeCast( CodeExportBody ); Define_CodeCast( CodeExternBody ); Define_CodeCast( CodeFnBody ); Define_CodeCast( CodeGlobalBody ); Define_CodeCast( CodeNamespaceBody ); Define_CodeCast( CodeStructBody ); Define_CodeCast( CodeUnionBody ); #undef Define_CodeCast #pragma endregion Operater Cast Impl CodeBody def_body( CodeT type ) { switch ( type ) { using namespace ECode; case Class_Body: case Enum_Body: case Export_Body: case Extern_Linkage: case Function_Body: case Global_Body: case Namespace_Body: case Struct_Body: case Union_Body: break; default: log_failure( "def_body: Invalid type %s", (char const*)ECode::to_str(type) ); return (CodeBody)Code::Invalid; } Code result = make_code(); result->Type = type; return (CodeBody)result; } //! Do not use directly. Use the token_fmt macro instead. // Takes a format string (char const*) and a list of tokens (StrC) and returns a StrC of the formatted string. inline StrC token_fmt_impl( sw num, ... ) { local_persist thread_local char buf[GEN_PRINTF_MAXLEN] = { 0 }; mem_set( buf, 0, GEN_PRINTF_MAXLEN ); va_list va; va_start(va, num ); sw result = token_fmt_va(buf, GEN_PRINTF_MAXLEN, num, va); va_end(va); return { result, buf }; } } #pragma endregion Inlines // end: gen_time #endif