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9ce859ec64
gencpp/project/gen.cpp
Ed_ 9ce859ec64 WIP Ended up using new layout, made major changes to how asts are interacted with an iterated. 
- Got rid of dynamic arrays for body entries, were using links only.
- Halfed the size of the ast from 256 to 128 bytes.
- Fields for different ast types are not accessed directly. Each type has a unique filtered AST for ease of use.
2023-07-15 00:03:14 -04:00

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// ReSharper disable CppClangTidyClangDiagnosticSwitchEnum
#ifdef gen_time
#include "gen.hpp"
#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
// NOTE: Ensure we use standard methods for these calls if we use GEN_PICO
#pragma region Macros
# include <stdio.h>
# if ! defined( GEN_PICO_CUSTOM_ROUTINES )
# if ! defined( GEN_MODULE_CORE )
# define _strlen strlen
# define _printf_err( fmt, ... ) fprintf( stderr, fmt, __VA_ARGS__ )
# define _printf_err_va( fmt, va ) vfprintf( stderr, fmt, va )
# else
# define _strlen str_len
# define _printf_err( fmt, ... ) str_fmt_out_err( fmt, __VA_ARGS__ )
# define _printf_err_va( fmt, va ) str_fmt_out_err_va( fmt, va )
# endif
# endif
#
# include <errno.h>
#
# if defined( GEN_SYSTEM_UNIX ) || defined( GEN_SYSTEM_MACOS )
# include <unistd.h>
# elif defined( GEN_SYSTEM_WINDOWS )
# if ! defined( GEN_NO_WINDOWS_H )
# ifndef WIN32_LEAN_AND_MEAN
# ifndef NOMINMAX
# define NOMINMAX
# endif
#
# define WIN32_LEAN_AND_MEAN
# define WIN32_MEAN_AND_LEAN
# define VC_EXTRALEAN
# endif
# include <windows.h>
# undef NOMINMAX
# undef WIN32_LEAN_AND_MEAN
# undef WIN32_MEAN_AND_LEAN
# undef VC_EXTRALEAN
# endif
# endif
#pragma endregion Macros
namespace gen
{
#pragma region Debug
void assert_handler( char const* condition, char const* file, s32 line, char const* msg, ... )
{
_printf_err( "%s:(%d): Assert Failure: ", file, line );
if ( condition )
_printf_err( "`%s` ", condition );
if ( msg )
{
va_list va;
va_start( va, msg );
_printf_err_va( msg, va );
va_end( va );
}
_printf_err( "%s", "\n" );
}
s32 assert_crash( char const* condition )
{
GEN_PANIC( condition );
return 0;
}
#if defined( GEN_SYSTEM_WINDOWS )
void process_exit( u32 code )
{
ExitProcess( code );
}
#else
# include <stdlib.h>
void process_exit( u32 code )
{
exit( code );
}
#endif
#pragma endregion Debug
#pragma region String Ops
internal sw _scan_zpl_i64( const char* text, s32 base, s64* value )
{
const char* text_begin = text;
s64 result = 0;
b32 negative = false;
if ( *text == '-' )
{
negative = true;
text++;
}
if ( base == 16 && str_compare( text, "0x", 2 ) == 0 )
text += 2;
for ( ;; )
{
s64 v;
if ( char_is_digit( *text ) )
v = *text - '0';
else if ( base == 16 && char_is_hex_digit( *text ) )
v = hex_digit_to_int( *text );
else
break;
result *= base;
result += v;
text++;
}
if ( value )
{
if ( negative )
result = -result;
*value = result;
}
return ( text - text_begin );
}
// TODO : Are these good enough for characters?
global const char _num_to_char_table[] =
"0123456789"
"ABCDEFGHIJKLMNOPQRSTUVWXYZ"
"abcdefghijklmnopqrstuvwxyz"
"@$";
s64 str_to_i64( const char* str, char** end_ptr, s32 base )
{
sw len;
s64 value;
if ( ! base )
{
if ( ( str_len( str ) > 2 ) && ( str_compare( str, "0x", 2 ) == 0 ) )
base = 16;
else
base = 10;
}
len = _scan_zpl_i64( str, base, &value );
if ( end_ptr )
*end_ptr = ( char* )str + len;
return value;
}
void i64_to_str( s64 value, char* string, s32 base )
{
char* buf = string;
b32 negative = false;
u64 v;
if ( value < 0 )
{
negative = true;
value = -value;
}
v = zpl_cast( u64 ) value;
if ( v != 0 )
{
while ( v > 0 )
{
*buf++ = _num_to_char_table[ v % base ];
v /= base;
}
}
else
{
*buf++ = '0';
}
if ( negative )
*buf++ = '-';
*buf = '\0';
str_reverse( string );
}
void u64_to_str( u64 value, char* string, s32 base )
{
char* buf = string;
if ( value )
{
while ( value > 0 )
{
*buf++ = _num_to_char_table[ value % base ];
value /= base;
}
}
else
{
*buf++ = '0';
}
*buf = '\0';
str_reverse( string );
}
#pragma endregion String Ops
#pragma region Memory
void* mem_copy( void* dest, void const* source, sw n )
{
if ( dest == NULL )
{
return NULL;
}
return memcpy( dest, source, n );
}
void const* mem_find( void const* data, u8 c, sw n )
{
u8 const* s = zpl_cast( u8 const* ) data;
while ( ( zpl_cast( uptr ) s & ( sizeof( uw ) - 1 ) ) && n && *s != c )
{
s++;
n--;
}
if ( n && *s != c )
{
sw const* w;
sw k = GEN__ONES * c;
w = zpl_cast( sw const* ) s;
while ( n >= size_of( sw ) && ! GEN__HAS_ZERO( *w ^ k ) )
{
w++;
n -= size_of( sw );
}
s = zpl_cast( u8 const* ) w;
while ( n && *s != c )
{
s++;
n--;
}
}
return n ? zpl_cast( void const* ) s : NULL;
}
#define GEN_HEAP_STATS_MAGIC 0xDEADC0DE
struct _heap_stats
{
u32 magic;
sw used_memory;
sw alloc_count;
};
global _heap_stats _heap_stats_info;
void heap_stats_init( void )
{
zero_item( &_heap_stats_info );
_heap_stats_info.magic = GEN_HEAP_STATS_MAGIC;
}
sw heap_stats_used_memory( void )
{
GEN_ASSERT_MSG( _heap_stats_info.magic == GEN_HEAP_STATS_MAGIC, "heap_stats is not initialised yet, call heap_stats_init first!" );
return _heap_stats_info.used_memory;
}
sw heap_stats_alloc_count( void )
{
GEN_ASSERT_MSG( _heap_stats_info.magic == GEN_HEAP_STATS_MAGIC, "heap_stats is not initialised yet, call heap_stats_init first!" );
return _heap_stats_info.alloc_count;
}
void heap_stats_check( void )
{
GEN_ASSERT_MSG( _heap_stats_info.magic == GEN_HEAP_STATS_MAGIC, "heap_stats is not initialised yet, call heap_stats_init first!" );
GEN_ASSERT( _heap_stats_info.used_memory == 0 );
GEN_ASSERT( _heap_stats_info.alloc_count == 0 );
}
struct _heap_alloc_info
{
sw size;
void* physical_start;
};
void* heap_allocator_proc( void* allocator_data, AllocType type, sw size, sw alignment, void* old_memory, sw old_size, u64 flags )
{
void* ptr = NULL;
// unused( allocator_data );
// unused( old_size );
if ( ! alignment )
alignment = GEN_DEFAULT_MEMORY_ALIGNMENT;
#ifdef GEN_HEAP_ANALYSIS
sw alloc_info_size = size_of( _heap_alloc_info );
sw alloc_info_remainder = ( alloc_info_size % alignment );
sw track_size = max( alloc_info_size, alignment ) + alloc_info_remainder;
switch ( type )
{
case EAllocation_FREE :
{
if ( ! old_memory )
break;
_heap_alloc_info* alloc_info = zpl_cast( _heap_alloc_info* ) old_memory - 1;
_heap_stats_info.used_memory -= alloc_info->size;
_heap_stats_info.alloc_count--;
old_memory = alloc_info->physical_start;
}
break;
case EAllocation_ALLOC :
{
size += track_size;
}
break;
default :
break;
}
#endif
switch ( type )
{
#if defined( GEN_COMPILER_MSVC ) || ( defined( GEN_COMPILER_GCC ) && defined( GEN_SYSTEM_WINDOWS ) ) || ( defined( GEN_COMPILER_TINYC ) && defined( GEN_SYSTEM_WINDOWS ) )
case EAllocation_ALLOC :
ptr = _aligned_malloc( size, alignment );
if ( flags & ALLOCATOR_FLAG_CLEAR_TO_ZERO )
zero_size( ptr, size );
break;
case EAllocation_FREE :
_aligned_free( old_memory );
break;
case EAllocation_RESIZE :
{
AllocatorInfo a = heap();
ptr = default_resize_align( a, old_memory, old_size, size, alignment );
}
break;
#elif defined( GEN_SYSTEM_LINUX ) && ! defined( GEN_CPU_ARM ) && ! defined( GEN_COMPILER_TINYC )
case EAllocation_ALLOC :
{
ptr = aligned_alloc( alignment, ( size + alignment - 1 ) & ~( alignment - 1 ) );
if ( flags & GEN_ALLOCATOR_FLAG_CLEAR_TO_ZERO )
{
zero_size( ptr, size );
}
}
break;
case EAllocation_FREE :
{
free( old_memory );
}
break;
case EAllocation_RESIZE :
{
AllocatorInfo a = heap();
ptr = default_resize_align( a, old_memory, old_size, size, alignment );
}
break;
#else
case EAllocation_ALLOC :
{
posix_memalign( &ptr, alignment, size );
if ( flags & GEN_ALLOCATOR_FLAG_CLEAR_TO_ZERO )
{
zero_size( ptr, size );
}
}
break;
case EAllocation_FREE :
{
free( old_memory );
}
break;
case EAllocation_RESIZE :
{
AllocatorInfo a = heap();
ptr = default_resize_align( a, old_memory, old_size, size, alignment );
}
break;
#endif
case EAllocation_FREE_ALL :
break;
}
#ifdef GEN_HEAP_ANALYSIS
if ( type == EAllocation_ALLOC )
{
_heap_alloc_info* alloc_info = zpl_cast( _heap_alloc_info* )( zpl_cast( char* ) ptr + alloc_info_remainder );
zero_item( alloc_info );
alloc_info->size = size - track_size;
alloc_info->physical_start = ptr;
ptr = zpl_cast( void* )( alloc_info + 1 );
_heap_stats_info.used_memory += alloc_info->size;
_heap_stats_info.alloc_count++;
}
#endif
return ptr;
}
void* Arena::allocator_proc( void* allocator_data, AllocType type, sw size, sw alignment, void* old_memory, sw old_size, u64 flags )
{
Arena* arena = rcast(Arena*, allocator_data);
void* ptr = NULL;
// unused( old_size );
switch ( type )
{
case EAllocation_ALLOC :
{
void* end = pointer_add( arena->PhysicalStart, arena->TotalUsed );
sw total_size = align_forward_i64( size, alignment );
// NOTE: Out of memory
if ( arena->TotalUsed + total_size > (sw) arena->TotalSize )
{
// zpl__printf_err("%s", "Arena out of memory\n");
return nullptr;
}
ptr = align_forward( end, alignment );
arena->TotalUsed += total_size;
if ( flags & ALLOCATOR_FLAG_CLEAR_TO_ZERO )
zero_size( ptr, size );
}
break;
case EAllocation_FREE :
// NOTE: Free all at once
// Use Temp_Arena_Memory if you want to free a block
break;
case EAllocation_FREE_ALL :
arena->TotalUsed = 0;
break;
case EAllocation_RESIZE :
{
// TODO : Check if ptr is on top of stack and just extend
AllocatorInfo a = arena->Backing;
ptr = default_resize_align( a, old_memory, old_size, size, alignment );
}
break;
}
return ptr;
}
void* Pool::allocator_proc( void* allocator_data, AllocType type, sw size, sw alignment, void* old_memory, sw old_size, u64 flags )
{
Pool* pool = zpl_cast( Pool* ) allocator_data;
void* ptr = NULL;
// unused( old_size );
switch ( type )
{
case EAllocation_ALLOC :
{
uptr next_free;
GEN_ASSERT( size == pool->BlockSize );
GEN_ASSERT( alignment == pool->BlockAlign );
GEN_ASSERT( pool->FreeList != NULL );
next_free = *zpl_cast( uptr* ) pool->FreeList;
ptr = pool->FreeList;
pool->FreeList = zpl_cast( void* ) next_free;
pool->TotalSize += pool->BlockSize;
if ( flags & ALLOCATOR_FLAG_CLEAR_TO_ZERO )
zero_size( ptr, size );
}
break;
case EAllocation_FREE :
{
uptr* next;
if ( old_memory == NULL )
return NULL;
next = zpl_cast( uptr* ) old_memory;
*next = zpl_cast( uptr ) pool->FreeList;
pool->FreeList = old_memory;
pool->TotalSize -= pool->BlockSize;
}
break;
case EAllocation_FREE_ALL :
{
sw actual_block_size, block_index;
void* curr;
uptr* end;
actual_block_size = pool->BlockSize + pool->BlockAlign;
pool->TotalSize = 0;
// NOTE: Init intrusive freelist
curr = pool->PhysicalStart;
for ( block_index = 0; block_index < pool->NumBlocks - 1; block_index++ )
{
uptr* next = zpl_cast( uptr* ) curr;
*next = zpl_cast( uptr ) curr + actual_block_size;
curr = pointer_add( curr, actual_block_size );
}
end = zpl_cast( uptr* ) curr;
*end = zpl_cast( uptr ) NULL;
pool->FreeList = pool->PhysicalStart;
}
break;
case EAllocation_RESIZE :
// NOTE: Cannot resize
GEN_PANIC( "You cannot resize something allocated by with a pool." );
break;
}
return ptr;
}
Pool Pool::init_align( AllocatorInfo backing, sw num_blocks, sw block_size, sw block_align )
{
Pool pool = {};
sw actual_block_size, pool_size, block_index;
void *data, *curr;
uptr* end;
pool.Backing = backing;
pool.BlockSize = block_size;
pool.BlockAlign = block_align;
pool.NumBlocks = num_blocks;
actual_block_size = block_size + block_align;
pool_size = num_blocks * actual_block_size;
data = alloc_align( backing, pool_size, block_align );
// NOTE: Init intrusive freelist
curr = data;
for ( block_index = 0; block_index < num_blocks - 1; block_index++ )
{
uptr* next = ( uptr* ) curr;
*next = ( uptr ) curr + actual_block_size;
curr = pointer_add( curr, actual_block_size );
}
end = ( uptr* ) curr;
*end = ( uptr ) 0;
pool.PhysicalStart = data;
pool.FreeList = data;
return pool;
}
#pragma endregion Memory
#pragma region Printing
enum
{
GEN_FMT_MINUS = bit( 0 ),
GEN_FMT_PLUS = bit( 1 ),
GEN_FMT_ALT = bit( 2 ),
GEN_FMT_SPACE = bit( 3 ),
GEN_FMT_ZERO = bit( 4 ),
GEN_FMT_CHAR = bit( 5 ),
GEN_FMT_SHORT = bit( 6 ),
GEN_FMT_INT = bit( 7 ),
GEN_FMT_LONG = bit( 8 ),
GEN_FMT_LLONG = bit( 9 ),
GEN_FMT_SIZE = bit( 10 ),
GEN_FMT_INTPTR = bit( 11 ),
GEN_FMT_UNSIGNED = bit( 12 ),
GEN_FMT_LOWER = bit( 13 ),
GEN_FMT_UPPER = bit( 14 ),
GEN_FMT_WIDTH = bit( 15 ),
GEN_FMT_DONE = bit( 30 ),
GEN_FMT_INTS = GEN_FMT_CHAR | GEN_FMT_SHORT | GEN_FMT_INT | GEN_FMT_LONG | GEN_FMT_LLONG | GEN_FMT_SIZE | GEN_FMT_INTPTR
};
struct _format_info
{
s32 base;
s32 flags;
s32 width;
s32 precision;
};
internal sw _print_string( char* text, sw max_len, _format_info* info, char const* str )
{
sw res = 0, len = 0;
sw remaining = max_len;
char* begin = text;
if ( str == NULL && max_len >= 6 )
{
res += str_copy_nulpad( text, "(null)", 6 );
return res;
}
if ( info && info->precision >= 0 )
len = str_len( str, info->precision );
else
len = str_len( str );
if ( info && ( info->width == 0 && info->flags & GEN_FMT_WIDTH ) )
{
return res;
}
if ( info && ( info->width == 0 || info->flags & GEN_FMT_MINUS ) )
{
if ( info->precision > 0 )
len = info->precision < len ? info->precision : len;
if ( res + len > max_len )
return res;
res += str_copy_nulpad( text, str, len );
text += res;
if ( info->width > res )
{
sw padding = info->width - len;
char pad = ( info->flags & GEN_FMT_ZERO ) ? '0' : ' ';
while ( padding-- > 0 && remaining-- > 0 )
*text++ = pad, res++;
}
}
else
{
if ( info && ( info->width > res ) )
{
sw padding = info->width - len;
char pad = ( info->flags & GEN_FMT_ZERO ) ? '0' : ' ';
while ( padding-- > 0 && remaining-- > 0 )
*text++ = pad, res++;
}
if ( res + len > max_len )
return res;
res += str_copy_nulpad( text, str, len );
}
if ( info )
{
if ( info->flags & GEN_FMT_UPPER )
str_to_upper( begin );
else if ( info->flags & GEN_FMT_LOWER )
str_to_lower( begin );
}
return res;
}
internal sw _print_char( char* text, sw max_len, _format_info* info, char arg )
{
char str[ 2 ] = "";
str[ 0 ] = arg;
return _print_string( text, max_len, info, str );
}
internal sw _print_repeated_char( char* text, sw max_len, _format_info* info, char arg )
{
sw res = 0;
s32 rem = ( info ) ? ( info->width > 0 ) ? info->width : 1 : 1;
res = rem;
while ( rem-- > 0 )
*text++ = arg;
return res;
}
internal sw _print_i64( char* text, sw max_len, _format_info* info, s64 value )
{
char num[ 130 ];
i64_to_str( value, num, info ? info->base : 10 );
return _print_string( text, max_len, info, num );
}
internal sw _print_u64( char* text, sw max_len, _format_info* info, u64 value )
{
char num[ 130 ];
u64_to_str( value, num, info ? info->base : 10 );
return _print_string( text, max_len, info, num );
}
internal sw _print_f64( char* text, sw max_len, _format_info* info, b32 is_hexadecimal, f64 arg )
{
// TODO: Handle exponent notation
sw width, len, remaining = max_len;
char* text_begin = text;
if ( arg )
{
u64 value;
if ( arg < 0 )
{
if ( remaining > 1 )
*text = '-', remaining--;
text++;
arg = -arg;
}
else if ( info->flags & GEN_FMT_MINUS )
{
if ( remaining > 1 )
*text = '+', remaining--;
text++;
}
value = zpl_cast( u64 ) arg;
len = _print_u64( text, remaining, NULL, value );
text += len;
if ( len >= remaining )
remaining = min( remaining, 1 );
else
remaining -= len;
arg -= value;
if ( info->precision < 0 )
info->precision = 6;
if ( ( info->flags & GEN_FMT_ALT ) || info->precision > 0 )
{
s64 mult = 10;
if ( remaining > 1 )
*text = '.', remaining--;
text++;
while ( info->precision-- > 0 )
{
value = zpl_cast( u64 )( arg * mult );
len = _print_u64( text, remaining, NULL, value );
text += len;
if ( len >= remaining )
remaining = min( remaining, 1 );
else
remaining -= len;
arg -= zpl_cast( f64 ) value / mult;
mult *= 10;
}
}
}
else
{
if ( remaining > 1 )
*text = '0', remaining--;
text++;
if ( info->flags & GEN_FMT_ALT )
{
if ( remaining > 1 )
*text = '.', remaining--;
text++;
}
}
width = info->width - ( text - text_begin );
if ( width > 0 )
{
char fill = ( info->flags & GEN_FMT_ZERO ) ? '0' : ' ';
char* end = text + remaining - 1;
len = ( text - text_begin );
for ( len = ( text - text_begin ); len--; )
{
if ( ( text_begin + len + width ) < end )
*( text_begin + len + width ) = *( text_begin + len );
}
len = width;
text += len;
if ( len >= remaining )
remaining = min( remaining, 1 );
else
remaining -= len;
while ( len-- )
{
if ( text_begin + len < end )
text_begin[ len ] = fill;
}
}
return ( text - text_begin );
}
neverinline sw str_fmt_va( char* text, sw max_len, char const* fmt, va_list va )
{
char const* text_begin = text;
sw remaining = max_len, res;
while ( *fmt )
{
_format_info info = { 0 };
sw len = 0;
info.precision = -1;
while ( *fmt && *fmt != '%' && remaining )
*text++ = *fmt++;
if ( *fmt == '%' )
{
do
{
switch ( *++fmt )
{
case '-' :
{
info.flags |= GEN_FMT_MINUS;
break;
}
case '+' :
{
info.flags |= GEN_FMT_PLUS;
break;
}
case '#' :
{
info.flags |= GEN_FMT_ALT;
break;
}
case ' ' :
{
info.flags |= GEN_FMT_SPACE;
break;
}
case '0' :
{
info.flags |= ( GEN_FMT_ZERO | GEN_FMT_WIDTH );
break;
}
default :
{
info.flags |= GEN_FMT_DONE;
break;
}
}
} while ( ! ( info.flags & GEN_FMT_DONE ) );
}
// NOTE: Optional Width
if ( *fmt == '*' )
{
int width = va_arg( va, int );
if ( width < 0 )
{
info.flags |= GEN_FMT_MINUS;
info.width = -width;
}
else
{
info.width = width;
}
info.flags |= GEN_FMT_WIDTH;
fmt++;
}
else
{
info.width = zpl_cast( s32 ) str_to_i64( fmt, zpl_cast( char** ) & fmt, 10 );
if ( info.width != 0 )
{
info.flags |= GEN_FMT_WIDTH;
}
}
// NOTE: Optional Precision
if ( *fmt == '.' )
{
fmt++;
if ( *fmt == '*' )
{
info.precision = va_arg( va, int );
fmt++;
}
else
{
info.precision = zpl_cast( s32 ) str_to_i64( fmt, zpl_cast( char** ) & fmt, 10 );
}
info.flags &= ~GEN_FMT_ZERO;
}
switch ( *fmt++ )
{
case 'h' :
if ( *fmt == 'h' )
{ // hh => char
info.flags |= GEN_FMT_CHAR;
fmt++;
}
else
{ // h => short
info.flags |= GEN_FMT_SHORT;
}
break;
case 'l' :
if ( *fmt == 'l' )
{ // ll => long long
info.flags |= GEN_FMT_LLONG;
fmt++;
}
else
{ // l => long
info.flags |= GEN_FMT_LONG;
}
break;
break;
case 'z' : // NOTE: zpl_usize
info.flags |= GEN_FMT_UNSIGNED;
// fallthrough
case 't' : // NOTE: zpl_isize
info.flags |= GEN_FMT_SIZE;
break;
default :
fmt--;
break;
}
switch ( *fmt )
{
case 'u' :
info.flags |= GEN_FMT_UNSIGNED;
// fallthrough
case 'd' :
case 'i' :
info.base = 10;
break;
case 'o' :
info.base = 8;
break;
case 'x' :
info.base = 16;
info.flags |= ( GEN_FMT_UNSIGNED | GEN_FMT_LOWER );
break;
case 'X' :
info.base = 16;
info.flags |= ( GEN_FMT_UNSIGNED | GEN_FMT_UPPER );
break;
case 'f' :
case 'F' :
case 'g' :
case 'G' :
len = _print_f64( text, remaining, &info, 0, va_arg( va, f64 ) );
break;
case 'a' :
case 'A' :
len = _print_f64( text, remaining, &info, 1, va_arg( va, f64 ) );
break;
case 'c' :
len = _print_char( text, remaining, &info, zpl_cast( char ) va_arg( va, int ) );
break;
case 's' :
len = _print_string( text, remaining, &info, va_arg( va, char* ) );
break;
case 'r' :
len = _print_repeated_char( text, remaining, &info, va_arg( va, int ) );
break;
case 'p' :
info.base = 16;
info.flags |= ( GEN_FMT_LOWER | GEN_FMT_UNSIGNED | GEN_FMT_ALT | GEN_FMT_INTPTR );
break;
case '%' :
len = _print_char( text, remaining, &info, '%' );
break;
default :
fmt--;
break;
}
fmt++;
if ( info.base != 0 )
{
if ( info.flags & GEN_FMT_UNSIGNED )
{
u64 value = 0;
switch ( info.flags & GEN_FMT_INTS )
{
case GEN_FMT_CHAR :
value = zpl_cast( u64 ) zpl_cast( u8 ) va_arg( va, int );
break;
case GEN_FMT_SHORT :
value = zpl_cast( u64 ) zpl_cast( u16 ) va_arg( va, int );
break;
case GEN_FMT_LONG :
value = zpl_cast( u64 ) va_arg( va, unsigned long );
break;
case GEN_FMT_LLONG :
value = zpl_cast( u64 ) va_arg( va, unsigned long long );
break;
case GEN_FMT_SIZE :
value = zpl_cast( u64 ) va_arg( va, uw );
break;
case GEN_FMT_INTPTR :
value = zpl_cast( u64 ) va_arg( va, uptr );
break;
default :
value = zpl_cast( u64 ) va_arg( va, unsigned int );
break;
}
len = _print_u64( text, remaining, &info, value );
}
else
{
s64 value = 0;
switch ( info.flags & GEN_FMT_INTS )
{
case GEN_FMT_CHAR :
value = zpl_cast( s64 ) zpl_cast( s8 ) va_arg( va, int );
break;
case GEN_FMT_SHORT :
value = zpl_cast( s64 ) zpl_cast( s16 ) va_arg( va, int );
break;
case GEN_FMT_LONG :
value = zpl_cast( s64 ) va_arg( va, long );
break;
case GEN_FMT_LLONG :
value = zpl_cast( s64 ) va_arg( va, long long );
break;
case GEN_FMT_SIZE :
value = zpl_cast( s64 ) va_arg( va, uw );
break;
case GEN_FMT_INTPTR :
value = zpl_cast( s64 ) va_arg( va, uptr );
break;
default :
value = zpl_cast( s64 ) va_arg( va, int );
break;
}
len = _print_i64( text, remaining, &info, value );
}
}
text += len;
if ( len >= remaining )
remaining = min( remaining, 1 );
else
remaining -= len;
}
*text++ = '\0';
res = ( text - text_begin );
return ( res >= max_len || res < 0 ) ? -1 : res;
}
char* str_fmt_buf_va( char const* fmt, va_list va )
{
local_persist thread_local char buffer[ GEN_PRINTF_MAXLEN ];
str_fmt_va( buffer, size_of( buffer ), fmt, va );
return buffer;
}
char* str_fmt_buf( char const* fmt, ... )
{
va_list va;
char* str;
va_start( va, fmt );
str = str_fmt_buf_va( fmt, va );
va_end( va );
return str;
}
sw str_fmt_file_va( struct FileInfo* f, char const* fmt, va_list va )
{
local_persist thread_local char buf[ GEN_PRINTF_MAXLEN ];
sw len = str_fmt_va( buf, size_of( buf ), fmt, va );
b32 res = file_write( f, buf, len - 1 ); // NOTE: prevent extra whitespace
return res ? len : -1;
}
sw str_fmt_out_va( char const* fmt, va_list va )
{
return str_fmt_file_va( file_get_standard( EFileStandard_OUTPUT ), fmt, va );
}
sw str_fmt_out_err_va( char const* fmt, va_list va )
{
return str_fmt_file_va( file_get_standard( EFileStandard_ERROR ), fmt, va );
}
sw str_fmt_out_err( char const* fmt, ... )
{
sw res;
va_list va;
va_start( va, fmt );
res = str_fmt_out_err_va( fmt, va );
va_end( va );
return res;
}
#pragma endregion Printing
#pragma region Hashing
global u32 const _crc32_table[ 256 ] = {
0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd,
0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec,
0x14015c4f, 0x63066cd9, 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, 0xb8bda50f,
0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65, 0x4db26158, 0x3ab551ce,
0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9,
0x5005713c, 0x270241aa, 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0,
0x10da7a5a, 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, 0xcc0c7795, 0xbb0b4703,
0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a,
0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45,
0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5,
0x47b2cf7f, 0x30b5ffe9, 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d,
};
u32 crc32( void const* data, sw len )
{
sw remaining;
u32 result = ~( zpl_cast( u32 ) 0 );
u8 const* c = zpl_cast( u8 const* ) data;
for ( remaining = len; remaining--; c++ )
result = ( result >> 8 ) ^ ( _crc32_table[ ( result ^ *c ) & 0xff ] );
return ~result;
}
#pragma endregion Hashing
#pragma region File Handling
#if defined( GEN_SYSTEM_WINDOWS ) || defined( GEN_SYSTEM_CYGWIN )
internal wchar_t* _alloc_utf8_to_ucs2( AllocatorInfo a, char const* text, sw* w_len_ )
{
wchar_t* w_text = NULL;
sw len = 0, w_len = 0, w_len1 = 0;
if ( text == NULL )
{
if ( w_len_ )
*w_len_ = w_len;
return NULL;
}
len = str_len( text );
if ( len == 0 )
{
if ( w_len_ )
*w_len_ = w_len;
return NULL;
}
w_len = MultiByteToWideChar( CP_UTF8, MB_ERR_INVALID_CHARS, text, zpl_cast( int ) len, NULL, 0 );
if ( w_len == 0 )
{
if ( w_len_ )
*w_len_ = w_len;
return NULL;
}
w_text = alloc_array( a, wchar_t, w_len + 1 );
w_len1 = MultiByteToWideChar( CP_UTF8, MB_ERR_INVALID_CHARS, text, zpl_cast( int ) len, w_text, zpl_cast( int ) w_len );
if ( w_len1 == 0 )
{
free( a, w_text );
if ( w_len_ )
*w_len_ = 0;
return NULL;
}
w_text[ w_len ] = 0;
if ( w_len_ )
*w_len_ = w_len;
return w_text;
}
internal GEN_FILE_SEEK_PROC( _win32_file_seek )
{
LARGE_INTEGER li_offset;
li_offset.QuadPart = offset;
if ( ! SetFilePointerEx( fd.p, li_offset, &li_offset, whence ) )
{
return false;
}
if ( new_offset )
*new_offset = li_offset.QuadPart;
return true;
}
internal GEN_FILE_READ_AT_PROC( _win32_file_read )
{
// unused( stop_at_newline );
b32 result = false;
_win32_file_seek( fd, offset, ESeekWhence_BEGIN, NULL );
DWORD size_ = zpl_cast( DWORD )( size > GEN_I32_MAX ? GEN_I32_MAX : size );
DWORD bytes_read_;
if ( ReadFile( fd.p, buffer, size_, &bytes_read_, NULL ) )
{
if ( bytes_read )
*bytes_read = bytes_read_;
result = true;
}
return result;
}
internal GEN_FILE_WRITE_AT_PROC( _win32_file_write )
{
DWORD size_ = zpl_cast( DWORD )( size > GEN_I32_MAX ? GEN_I32_MAX : size );
DWORD bytes_written_;
_win32_file_seek( fd, offset, ESeekWhence_BEGIN, NULL );
if ( WriteFile( fd.p, buffer, size_, &bytes_written_, NULL ) )
{
if ( bytes_written )
*bytes_written = bytes_written_;
return true;
}
return false;
}
internal GEN_FILE_CLOSE_PROC( _win32_file_close )
{
CloseHandle( fd.p );
}
FileOperations const default_file_operations = { _win32_file_read, _win32_file_write, _win32_file_seek, _win32_file_close };
neverinline GEN_FILE_OPEN_PROC( _win32_file_open )
{
DWORD desired_access;
DWORD creation_disposition;
void* handle;
wchar_t* w_text;
switch ( mode & GEN_FILE_MODES )
{
case EFileMode_READ :
desired_access = GENERIC_READ;
creation_disposition = OPEN_EXISTING;
break;
case EFileMode_WRITE :
desired_access = GENERIC_WRITE;
creation_disposition = CREATE_ALWAYS;
break;
case EFileMode_APPEND :
desired_access = GENERIC_WRITE;
creation_disposition = OPEN_ALWAYS;
break;
case EFileMode_READ | EFileMode_RW :
desired_access = GENERIC_READ | GENERIC_WRITE;
creation_disposition = OPEN_EXISTING;
break;
case EFileMode_WRITE | EFileMode_RW :
desired_access = GENERIC_READ | GENERIC_WRITE;
creation_disposition = CREATE_ALWAYS;
break;
case EFileMode_APPEND | EFileMode_RW :
desired_access = GENERIC_READ | GENERIC_WRITE;
creation_disposition = OPEN_ALWAYS;
break;
default :
GEN_PANIC( "Invalid file mode" );
return EFileError_INVALID;
}
w_text = _alloc_utf8_to_ucs2( heap(), filename, NULL );
handle = CreateFileW( w_text, desired_access, FILE_SHARE_READ | FILE_SHARE_DELETE, NULL, creation_disposition, FILE_ATTRIBUTE_NORMAL, NULL );
free( heap(), w_text );
if ( handle == INVALID_HANDLE_VALUE )
{
DWORD err = GetLastError();
switch ( err )
{
case ERROR_FILE_NOT_FOUND :
return EFileError_NOT_EXISTS;
case ERROR_FILE_EXISTS :
return EFileError_EXISTS;
case ERROR_ALREADY_EXISTS :
return EFileError_EXISTS;
case ERROR_ACCESS_DENIED :
return EFileError_PERMISSION;
}
return EFileError_INVALID;
}
if ( mode & EFileMode_APPEND )
{
LARGE_INTEGER offset = { { 0 } };
if ( ! SetFilePointerEx( handle, offset, NULL, ESeekWhence_END ) )
{
CloseHandle( handle );
return EFileError_INVALID;
}
}
fd->p = handle;
*ops = default_file_operations;
return EFileError_NONE;
}
#else // POSIX
# include <fcntl.h>
internal GEN_FILE_SEEK_PROC( _posix_file_seek )
{
# if defined( GEN_SYSTEM_OSX )
s64 res = lseek( fd.i, offset, whence );
# else // TODO(ZaKlaus): @fixme lseek64
s64 res = lseek( fd.i, offset, whence );
# endif
if ( res < 0 )
return false;
if ( new_offset )
*new_offset = res;
return true;
}
internal GEN_FILE_READ_AT_PROC( _posix_file_read )
{
unused( stop_at_newline );
sw res = pread( fd.i, buffer, size, offset );
if ( res < 0 )
return false;
if ( bytes_read )
*bytes_read = res;
return true;
}
internal GEN_FILE_WRITE_AT_PROC( _posix_file_write )
{
sw res;
s64 curr_offset = 0;
_posix_file_seek( fd, 0, ESeekWhence_CURRENT, &curr_offset );
if ( curr_offset == offset )
{
// NOTE: Writing to stdout et al. doesn't like pwrite for numerous reasons
res = write( zpl_cast( int ) fd.i, buffer, size );
}
else
{
res = pwrite( zpl_cast( int ) fd.i, buffer, size, offset );
}
if ( res < 0 )
return false;
if ( bytes_written )
*bytes_written = res;
return true;
}
internal GEN_FILE_CLOSE_PROC( _posix_file_close )
{
close( fd.i );
}
FileOperations const default_file_operations = { _posix_file_read, _posix_file_write, _posix_file_seek, _posix_file_close };
GEN_NEVER_INLINE GEN_FILE_OPEN_PROC( _posix_file_open )
{
s32 os_mode;
switch ( mode & GEN_FILE_MODES )
{
case EFileMode_READ :
os_mode = O_RDONLY;
break;
case EFileMode_WRITE :
os_mode = O_WRONLY | O_CREAT | O_TRUNC;
break;
case EFileMode_APPEND :
os_mode = O_WRONLY | O_APPEND | O_CREAT;
break;
case EFileMode_READ | EFileMode_RW :
os_mode = O_RDWR;
break;
case EFileMode_WRITE | EFileMode_RW :
os_mode = O_RDWR | O_CREAT | O_TRUNC;
break;
case EFileMode_APPEND | EFileMode_RW :
os_mode = O_RDWR | O_APPEND | O_CREAT;
break;
default :
GEN_PANIC( "Invalid file mode" );
return EFileError_INVALID;
}
fd->i = open( filename, os_mode, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH );
if ( fd->i < 0 )
{
// TODO : More file errors
return EFileError_INVALID;
}
*ops = default_file_operations;
return EFileError_NONE;
}
// POSIX
#endif
internal void _dirinfo_free_entry( DirEntry* entry );
// TODO : Is this a bad idea?
global b32 _std_file_set = false;
global FileInfo _std_files[ EFileStandard_COUNT ] = {
{
{ nullptr, nullptr, nullptr, nullptr },
{ nullptr },
0,
nullptr,
0,
nullptr
} };
#if defined( GEN_SYSTEM_WINDOWS ) || defined( GEN_SYSTEM_CYGWIN )
FileInfo* file_get_standard( FileStandardType std )
{
if ( ! _std_file_set )
{
# define GEN__SET_STD_FILE( type, v ) \
_std_files[ type ].FD.p = v; \
_std_files[ type ].Ops = default_file_operations
GEN__SET_STD_FILE( EFileStandard_INPUT, GetStdHandle( STD_INPUT_HANDLE ) );
GEN__SET_STD_FILE( EFileStandard_OUTPUT, GetStdHandle( STD_OUTPUT_HANDLE ) );
GEN__SET_STD_FILE( EFileStandard_ERROR, GetStdHandle( STD_ERROR_HANDLE ) );
# undef GEN__SET_STD_FILE
_std_file_set = true;
}
return &_std_files[ std ];
}
#else // POSIX
FileInfo* file_get_standard( FileStandardType std )
{
if ( ! _std_file_set )
{
# define GEN__SET_STD_FILE( type, v ) \
_std_files[ type ].fd.i = v; \
_std_files[ type ].ops = default_file_operations
GEN__SET_STD_FILE( EFileStandard_INPUT, 0 );
GEN__SET_STD_FILE( EFileStandard_OUTPUT, 1 );
GEN__SET_STD_FILE( EFileStandard_ERROR, 2 );
# undef GEN__SET_STD_FILE
_std_file_set = true;
}
return &_std_files[ std ];
}
#endif
FileError file_close( FileInfo* f )
{
if ( ! f )
return EFileError_INVALID;
if ( f->Filename )
free( heap(), zpl_cast( char* ) f->Filename );
#if defined( GEN_SYSTEM_WINDOWS )
if ( f->FD.p == INVALID_HANDLE_VALUE )
return EFileError_INVALID;
#else
if ( f->fd.i < 0 )
return EFileError_INVALID;
#endif
if ( f->IsTemp )
{
f->Ops.close( f->FD );
return EFileError_NONE;
}
if ( ! f->Ops.read_at )
f->Ops = default_file_operations;
f->Ops.close( f->FD );
#if 0
if ( f->Dir )
{
_dirinfo_free_entry( f->Dir );
mfree( f->Dir );
f->Dir = NULL;
}
#endif
return EFileError_NONE;
}
FileError file_new( FileInfo* f, FileDescriptor fd, FileOperations ops, char const* filename )
{
FileError err = EFileError_NONE;
sw len = str_len( filename );
f->Ops = ops;
f->FD = fd;
f->Dir = nullptr;
f->LastWriteTime = 0;
f->Filename = alloc_array( heap(), char, len + 1 );
mem_copy( zpl_cast( char* ) f->Filename, zpl_cast( char* ) filename, len + 1 );
return err;
}
FileError file_open_mode( FileInfo* f, FileMode mode, char const* filename )
{
FileInfo file_ =
{
{ nullptr, nullptr, nullptr, nullptr },
{ nullptr },
0,
nullptr,
0,
nullptr
};
*f = file_;
FileError err;
#if defined( GEN_SYSTEM_WINDOWS ) || defined( GEN_SYSTEM_CYGWIN )
err = _win32_file_open( &f->FD, &f->Ops, mode, filename );
#else
err = _posix_file_open( &f->fd, &f->ops, mode, filename );
#endif
if ( err == EFileError_NONE )
return file_new( f, f->FD, f->Ops, filename );
return err;
}
#pragma endregion File Handling
#pragma region String
String String::fmt( AllocatorInfo allocator, char* buf, sw buf_size, char const* fmt, ... )
{
va_list va;
va_start( va, fmt );
str_fmt_va( buf, buf_size, fmt, va );
va_end( va );
return make( allocator, buf );
}
String String::fmt_buf( AllocatorInfo allocator, char const* fmt, ... )
{
local_persist thread_local
char buf[ GEN_PRINTF_MAXLEN ] = { 0 };
va_list va;
va_start( va, fmt );
str_fmt_va( buf, GEN_PRINTF_MAXLEN, fmt, va );
va_end( va );
return make( allocator, buf );
}
bool String::append_fmt( char const* fmt, ... )
{
sw res;
char buf[ GEN_PRINTF_MAXLEN ] = { 0 };
va_list va;
va_start( va, fmt );
res = str_fmt_va( buf, count_of( buf ) - 1, fmt, va ) - 1;
va_end( va );
return append( buf, res );
}
#pragma endregion String
namespace Memory
{
global AllocatorInfo GlobalAllocator;
global Array<Arena> Global_AllocatorBuckets;
void* Global_Allocator_Proc( void* allocator_data, AllocType type, sw size, sw alignment, void* old_memory, sw old_size, u64 flags )
{
Arena& last = Global_AllocatorBuckets.back();
switch ( type )
{
case EAllocation_ALLOC:
{
if ( last.TotalUsed + size > last.TotalSize )
{
Arena bucket = Arena::init_from_allocator( heap(), BucketSize );
if ( bucket.PhysicalStart == nullptr )
fatal( "Failed to create bucket for Global_AllocatorBuckets");
if ( ! Global_AllocatorBuckets.append( bucket ) )
fatal( "Failed to append bucket to Global_AllocatorBuckets");
last = Global_AllocatorBuckets.back();
}
return alloc_align( last, size, alignment );
}
case EAllocation_FREE:
{
// Doesn't recycle.
}
break;
case EAllocation_FREE_ALL:
{
// Memory::cleanup instead.
}
break;
case EAllocation_RESIZE:
{
if ( last.TotalUsed + size > last.TotalSize )
{
Arena bucket = Arena::init_from_allocator( heap(), BucketSize );
if ( bucket.PhysicalStart == nullptr )
fatal( "Failed to create bucket for Global_AllocatorBuckets");
if ( ! Global_AllocatorBuckets.append( bucket ) )
fatal( "Failed to append bucket to Global_AllocatorBuckets");
last = Global_AllocatorBuckets.back();
}
void* result = alloc_align( last.Backing, size, alignment );
if ( result != nullptr && old_memory != nullptr )
{
mem_copy( result, old_memory, old_size );
}
return result;
}
}
return nullptr;
}
void setup()
{
GlobalAllocator = AllocatorInfo { & Global_Allocator_Proc, nullptr };
Global_AllocatorBuckets = Array<Arena>::init_reserve( heap(), 128 );
if ( Global_AllocatorBuckets == nullptr )
fatal( "Failed to reserve memory for Global_AllocatorBuckets");
Arena bucket = Arena::init_from_allocator( heap(), BucketSize );
if ( bucket.PhysicalStart == nullptr )
fatal( "Failed to create first bucket for Global_AllocatorBuckets");
Global_AllocatorBuckets.append( bucket );
}
void cleanup()
{
s32 index = 0;
s32 left = Global_AllocatorBuckets.num();
do
{
Arena* bucket = & Global_AllocatorBuckets[ index ];
bucket->free();
index++;
}
while ( left--, left );
Global_AllocatorBuckets.free();
}
// namespace Memory
}
// namespace gen
}
#endif
#pragma endregion GENCPP DEPENDENCIES
namespace gen
{
namespace StaticData
{
global Array< Pool > CodePools = { nullptr };
global Array< Arena > StringArenas = { nullptr };
global StringTable StringCache;
global AllocatorInfo Allocator_DataArrays = heap();
global AllocatorInfo Allocator_CodePool = heap();
global AllocatorInfo Allocator_StringArena = heap();
global AllocatorInfo Allocator_StringTable = heap();
global AllocatorInfo Allocator_TypeTable = heap();
}
#pragma region Constants
global CodeType t_auto;
global CodeType t_void;
global CodeType t_int;
global CodeType t_bool;
global CodeType t_char;
global CodeType t_wchar_t;
global CodeType t_class;
global CodeType t_typename;
#ifdef GEN_DEFINE_LIBRARY_CODE_CONSTANTS
global CodeType t_b32;
global CodeType t_s8;
global CodeType t_s16;
global CodeType t_s32;
global CodeType t_s64;
global CodeType t_u8;
global CodeType t_u16;
global CodeType t_u32;
global CodeType t_u64;
global CodeType t_sw;
global CodeType t_uw;
global CodeType t_f32;
global CodeType t_f64;
#endif
global Code access_public;
global Code access_protected;
global Code access_private;
global Code module_global_fragment;
global Code module_private_fragment;
global Code pragma_once;
global CodeSpecifiers spec_const;
global CodeSpecifiers spec_consteval;
global CodeSpecifiers spec_constexpr;
global CodeSpecifiers spec_constinit;
global CodeSpecifiers spec_extern_linkage;
global CodeSpecifiers spec_global;
global CodeSpecifiers spec_inline;
global CodeSpecifiers spec_internal_linkage;
global CodeSpecifiers spec_local_persist;
global CodeSpecifiers spec_mutable;
global CodeSpecifiers spec_ptr;
global CodeSpecifiers spec_ref;
global CodeSpecifiers spec_register;
global CodeSpecifiers spec_rvalue;
global CodeSpecifiers spec_static_member;
global CodeSpecifiers spec_thread_local;
global CodeSpecifiers spec_volatile;
#pragma endregion Constants
#pragma region AST Body Case Macros
# define AST_BODY_CLASS_UNALLOWED_TYPES \
case PlatformAttributes: \
case Class_Body: \
case Enum_Body: \
case Extern_Linkage: \
case Function_Body: \
case Function_Fwd: \
case Global_Body: \
case Namespace: \
case Namespace_Body: \
case Operator: \
case Operator_Fwd: \
case Parameters: \
case Specifiers: \
case Struct_Body: \
case Typename:
# define AST_BODY_FUNCTION_UNALLOWED_TYPES \
case Access_Public: \
case Access_Protected: \
case Access_Private: \
case PlatformAttributes: \
case Class_Body: \
case Enum_Body: \
case Extern_Linkage: \
case Friend: \
case Function_Body: \
case Function_Fwd: \
case Global_Body: \
case Namespace: \
case Namespace_Body: \
case Operator: \
case Operator_Fwd: \
case Operator_Member: \
case Operator_Member_Fwd: \
case Parameters: \
case Specifiers: \
case Struct_Body: \
case Typename:
# define AST_BODY_GLOBAL_UNALLOWED_TYPES \
case Access_Public: \
case Access_Protected: \
case Access_Private: \
case PlatformAttributes: \
case Class_Body: \
case Enum_Body: \
case Execution: \
case Friend: \
case Function_Body: \
case Global_Body: \
case Namespace_Body: \
case Operator_Member: \
case Operator_Member_Fwd: \
case Parameters: \
case Specifiers: \
case Struct_Body: \
case Typename:
# define AST_BODY_EXPORT_UNALLOWED_TYPES AST_BODY_GLOBAL_UNALLOWED_TYPES
# define AST_BODY_NAMESPACE_UNALLOWED_TYPES AST_BODY_GLOBAL_UNALLOWED_TYPES
# define AST_BODY_EXTERN_LINKAGE_UNALLOWED_TYPES AST_BODY_GLOBAL_UNALLOWED_TYPES
# define AST_BODY_STRUCT_UNALLOWED_TYPES AST_BODY_CLASS_UNALLOWED_TYPES
#pragma endregion AST Body Case Macros
#pragma region AST
Code Code::Global;
Code Code::Invalid;
AST* AST::duplicate()
{
using namespace ECode;
Code result = make_code();
mem_copy( (AST*)result, this, sizeof( AST ) );
return result;
}
String AST::to_string()
{
# define ProcessModuleFlags() \
if ( bitfield_is_equal( u32, ModuleFlags, ModuleFlag::Export )) \
result.append( "export " ); \
\
if ( bitfield_is_equal( u32, ModuleFlags, ModuleFlag::Import )) \
result.append( "import " ); \
String result = String::make( Memory::GlobalAllocator, "" );
switch ( Type )
{
using namespace ECode;
case Invalid:
log_failure("Attempted to serialize invalid code! - %s", Name);
break;
case Untyped:
case Execution:
result.append( Content );
break;
case Comment:
{
static char line[MaxCommentLineLength];
s32 left = Content.length();
s32 index = 0;
do
{
s32 length = 0;
while ( left && Content[index] != '\n' )
{
length++;
left--;
}
str_copy( line, Content, length );
line[length] = '\0';
result.append_fmt( "// %s", line );
}
while ( left--, left > 0 );
}
break;
case Access_Private:
case Access_Protected:
case Access_Public:
result.append( Name );
break;
case PlatformAttributes:
result.append( Content );
case Class:
{
ProcessModuleFlags();
if ( Attributes || ParentType )
{
result.append( "class " );
if ( Attributes )
result.append_fmt( "%s ", Attributes->to_string() );
if ( ParentType )
{
char const* access_level = to_str( ParentAccess );
result.append_fmt( "%s : %s %s\n{\n%s\n};"
, Name
, access_level
, ParentType->to_string()
, Body->to_string()
);
}
else
{
result.append_fmt( "%s \n{\n%s\n};", Name, Body->to_string() );
}
}
else
{
result.append_fmt( "class %s\n{\n%s\n};", Name, Body->to_string() );
}
}
break;
case Class_Fwd:
{
ProcessModuleFlags();
if ( Attributes )
result.append_fmt( "class %s %s;", Attributes->to_string(), Name );
else result.append_fmt( "class %s;", Name );
}
break;
case Enum:
{
ProcessModuleFlags();
if ( Attributes || UnderlyingType )
{
result.append( "enum " );
if ( Attributes )
result.append_fmt( "%s ", Attributes->to_string() );
if ( UnderlyingType )
result.append_fmt( "%s : %s\n{\n"
, Name
, UnderlyingType->to_string()
);
else result.append_fmt( "%s\n{\n%s\n};"
, Name
, Body->to_string()
);
}
else result.append_fmt( "enum %s\n{\n%s\n};"
, Name
, Body->to_string()
);
}
break;
case Enum_Fwd:
{
ProcessModuleFlags();
if ( Attributes )
result.append_fmt( "%s ", Attributes->to_string() );
result.append_fmt( "enum %s : %s;", Name, UnderlyingType->to_string() );
}
break;
case Enum_Class:
{
ProcessModuleFlags();
if ( Attributes || UnderlyingType )
{
result.append( "enum class " );
if ( Attributes )
{
result.append_fmt( "%s ", Attributes->to_string() );
}
if ( UnderlyingType )
{
result.append_fmt( "%s : %s\n{\n%s\n};"
, Name
, UnderlyingType->to_string()
, Body->to_string()
);
}
else
{
result.append_fmt( "%s\n{\n$s\n};"
, Name
, Body->to_string()
);
}
}
else
{
result.append_fmt( "enum class %s\n{\n%s\n};"
, Body->to_string()
);
}
}
break;
case Enum_Class_Fwd:
{
ProcessModuleFlags();
result.append( "enum class " );
if ( Attributes )
result.append_fmt( "%s ", Attributes->to_string() );
result.append_fmt( "%s : %s;", Name, UnderlyingType->to_string() );
}
break;
case Export_Body:
{
result.append_fmt( "export\n{\n" );
Code curr = cast<Code>();
s32 left = NumEntries;
while ( left-- )
{
result.append_fmt( "%s\n", curr->to_string() );
++curr;
}
result.append_fmt( "};" );
}
break;
case Extern_Linkage:
ProcessModuleFlags();
result.append_fmt( "extern \"%s\"\n{\n%s\n}"
, Name
, Body->to_string()
);
break;
case Friend:
result.append_fmt( "friend %s;", Declaration->to_string() );
break;
case Function:
{
ProcessModuleFlags();
if ( Attributes )
result.append_fmt( "%s ", Attributes->to_string() );
if ( Specs )
result.append_fmt( "%s\n", Specs->to_string() );
if ( ReturnType )
result.append_fmt( "%s %s", ReturnType->to_string(), Name );
else
result.append_fmt( "%s(", Name );
if ( Params )
result.append_fmt( "%s", Params->to_string() );
else
result.append( "void" );
result.append_fmt( ")\n{\n%s\n}"
, Body->to_string()
);
}
break;
case Function_Fwd:
{
ProcessModuleFlags();
if ( Attributes )
result.append_fmt( "%s ", Attributes->to_string() );
if ( Specs )
result.append_fmt( "%s\n", Specs->to_string() );
if ( ReturnType )
result.append_fmt( "%s %s(", ReturnType->to_string(), Name );
else
result.append_fmt( "%s(", Name );
if ( Params )
result.append_fmt( "%s", Params->to_string() );
else
result.append( "void" );
result.append( ");" );
}
break;
case Module:
if (((u32(ModuleFlag::Export) & u32(ModuleFlags)) == u32(ModuleFlag::Export)))
result.append("export ");
if (((u32(ModuleFlag::Import) & u32(ModuleFlags)) == u32(ModuleFlag::Import)))
result.append("import ");
result.append_fmt( "%s;", Name );
break;
case Namespace:
ProcessModuleFlags();
result.append_fmt( "namespace %s\n{\n%s}"
, Name
, Body->to_string()
);
break;
case Operator:
case Operator_Member:
{
ProcessModuleFlags();
if ( Attributes )
result.append_fmt( "%s ", Attributes->to_string() );
if ( Attributes )
result.append_fmt( "%s\n", Attributes->to_string() );
if ( ReturnType )
result.append_fmt( "%s %s (", ReturnType->to_string(), Name );
if ( Params )
result.append_fmt( "%s", Params->to_string() );
else
result.append( "void" );
result.append_fmt( ")\n{\n%s\n}"
, Body->to_string()
);
}
break;
case Operator_Fwd:
case Operator_Member_Fwd:
{
ProcessModuleFlags();
if ( Attributes )
result.append_fmt( "%s ", Attributes->to_string() );
if ( Specs )
result.append_fmt( "%s", Specs->to_string() );
result.append_fmt( "%s %s (", ReturnType->to_string(), Name );
if ( Params )
result.append_fmt( "%s);", Params->to_string() );
else
result.append_fmt( "void);" );
}
break;
case Operator_Cast:
{
result.append_fmt("operator %s(){\n%s\n}", ValueType->to_string(), Body->to_string() );
}
break;
case Operator_Cast_Fwd:
result.append_fmt("operator %s();", ValueType->to_string() );
break;
case Parameters:
{
// TODO : Parameters can have default values.
if ( Name )
result.append_fmt( "%s %s", ValueType->to_string(), Name );
else
result.append_fmt( "%s", ValueType->to_string() );
if ( NumEntries )
for ( CodeParam param : cast<CodeParam>() )
{
result.append(param->to_string());
}
}
break;
case Preprocessor_Include:
result.append_fmt( "#include \"%s\"", Name );
break;
case Specifiers:
{
s32 idx = 0;
s32 left = NumEntries;
while ( left-- )
{
result.append_fmt( "%s ", (char const*)ESpecifier::to_str( ArrSpecs[idx]) );
idx++;
}
}
break;
case Struct:
{
ProcessModuleFlags();
CodeStruct self = cast<CodeStruct>();
if ( Attributes || ParentType )
{
result.append( "struct " );
if ( ParentType )
result.append_fmt( "%s ", Attributes->to_string() );
// TODO : Structs can be anonymous, so we need to check for that
if ( ParentType )
{
char const* access_level = to_str( ParentAccess );
result.append_fmt( "%s : %s %s\n{\n%s\n};"
, Name
, access_level
, ParentType->to_string()
, Body->to_string()
);
}
else
{
result.append_fmt( "%s \n{\n%s\n};", Name, Body->to_string() );
}
}
else
{
result.append_fmt( "struct %s\n{\n%s\n};", Name, Body->to_string() );
}
}
break;
case Struct_Fwd:
{
ProcessModuleFlags();
CodeStruct self = cast<CodeStruct>();
if ( Attributes )
result.append_fmt( "struct %s %s;", Attributes->to_string(), Name );
else result.append_fmt( "struct %s;", Name );
}
break;
case Template:
{
ProcessModuleFlags();
CodeTemplate self = cast<CodeTemplate>();
result.append_fmt( "template< %s >\n%s", self.params()->to_string(), self.definition()->to_string() );
}
break;
case Typedef:
{
ProcessModuleFlags();
CodeTypedef self = cast<CodeTypedef>();
result.append( "typedef ");
if ( self.attributes() )
{
result.append_fmt( "%s ", self.attributes()->to_string() );
}
result.append_fmt( "%s %s", self.type()->to_string(), Name );
if ( self.type() )
{
result.append_fmt( "[%s];", self.type()->to_string() );
}
else
{
result.append( ";" );
}
}
break;
case Typename:
{
CodeType self = cast<CodeType>();
if ( self.attributes() || self.specifiers() )
{
if ( self.attributes() )
result.append_fmt( "%s ", self.attributes()->to_string() );
if ( self.specifiers() )
result.append_fmt( "%s %s", Name, self.specifiers()->to_string() );
else
result.append_fmt( "%s", Name );
}
else
{
result.append_fmt( "%s", Name );
}
}
break;
case Union:
{
ProcessModuleFlags();
CodeUnion self = cast<CodeUnion>();
result.append( "union " );
if ( self.attributes() )
result.append_fmt( "%s ", self.attributes()->to_string() );
if ( Name )
{
result.append_fmt( "%s\n{\n%s\n};"
, Name
, self.body()->to_string()
);
}
else
{
// Anonymous union
result.append_fmt( "\n{\n%s\n};"
, self.body()->to_string()
);
}
}
break;
case Using:
{
ProcessModuleFlags();
AST* type = entry( 0 );
if ( entry( 1 ) && entry( 1 )->Type == PlatformAttributes )
{
result.append_fmt( "%s ", entry( 1 )->to_string() );
}
if ( type )
{
result.append_fmt( "using %s = %s", Name, type->to_string() );
if ( type->entry( 1 ) )
result.append_fmt( "[%s]", type->entry( 1 )->to_string() );
result.append( ";" );
}
else
result.append_fmt( "using %s;", Name );
}
break;
case Using_Namespace:
result.append_fmt( "using namespace %s;", Name );
break;
case Variable:
{
ProcessModuleFlags();
CodeVar self = cast<CodeVar>();
if ( self.attributes() || self.specifiers() )
{
if ( self.attributes() )
result.append_fmt( "%s ", self.attributes()->to_string() );
if ( self.specifiers() )
result.append_fmt( "%s\n", self.specifiers()->to_string() );
result.append_fmt( "%s %s", entry( 0 )->to_string(), Name );
AST* type = entry( 0);
AST* type_arr = type->entry( 0 );
if ( self.type().array_expr() )
result.append_fmt( "[%s]", type_arr->to_string() );
if ( self.value() )
result.append_fmt( " = %s;", self.value()->to_string() );
break;
}
CodeType type = self.type();
Code type_arr = type.array_expr();
if ( type_arr )
result.append_fmt( "%s %s[%s];", type->to_string(), Name, type_arr->to_string() );
else
result.append_fmt( "%s %s;", entry( 0 )->to_string(), Name );
}
break;
case Class_Body:
case Enum_Body:
case Extern_Linkage_Body:
case Function_Body:
case Global_Body:
case Namespace_Body:
case Struct_Body:
case Union_Body:
{
Code curr = Front->cast<Code>();
s32 left = NumEntries;
while ( left -- )
{
result.append_fmt( "%s\n", curr->to_string() );
++curr;
}
}
break;
}
return result;
#undef ProcessModuleFlags
}
bool AST::is_equal( AST* other )
{
if ( Type != other->Type )
return false;
switch ( Type )
{
// TODO : Finish this...
case ECode::Typedef:
case ECode::Typename:
{
if ( Name != other->Name )
return false;
return true;
}
}
if ( Name != other->Name )
return false;
return true;
}
bool AST::validate_body()
{
using namespace ECode;
#define CheckBodyType( BodyType ) \
if ( Type != BodyType ) \
{ \
log_failure( "AST::validate_body: Invalid body type %s", debug_str() ); \
return false; \
}
#define CheckEntries( Unallowed_Types ) \
do \
{ \
for ( Code entry : Body->cast<CodeBody>() ) \
{ \
switch ( entry->Type ) \
{ \
Unallowed_Types \
log_failure( "AST::validate_body: Invalid entry in body %s", entry->debug_str() ); \
return false; \
} \
} \
} \
while (0);
switch ( Type )
{
case Class_Body:
CheckBodyType( Class_Body );
CheckEntries( AST_BODY_CLASS_UNALLOWED_TYPES );
break;
case Enum_Body:
CheckBodyType( Enum_Body );
for ( Code entry : Body->cast<CodeBody>() )
{
if ( entry->Type != Untyped )
{
log_failure( "AST::validate_body: Invalid entry in enum body (needs to be untyped or comment) %s", entry->debug_str() );
return false;
}
}
break;
case Export_Body:
for ( Code entry : Body->cast<CodeBody>() )
{
if ( entry->Type != Untyped )
{
log_failure( "AST::validate_body: Invalid entry in export body %s", entry->debug_str() );
return false;
}
}
break;
case Extern_Linkage:
CheckBodyType( Extern_Linkage );
CheckEntries( AST_BODY_EXTERN_LINKAGE_UNALLOWED_TYPES );
break;
case Function_Body:
CheckBodyType( Function_Body );
CheckEntries( AST_BODY_FUNCTION_UNALLOWED_TYPES );
break;
case Global_Body:
for ( s32 idx = 0; idx < NumEntries; idx++ )
{
AST* elem = entry( idx );
if ( elem->Type != Untyped )
{
log_failure( "AST::validate_body: Invalid entry in global body %s", elem->debug_str() );
return false;
}
}
break;
case Namespace_Body:
CheckBodyType( Namespace_Body );
CheckEntries( AST_BODY_NAMESPACE_UNALLOWED_TYPES );
break;
case Struct_Body:
CheckBodyType( Struct_Body );
CheckEntries( AST_BODY_STRUCT_UNALLOWED_TYPES );
break;
case Union_Body:
CheckBodyType( Union_Body );
for ( s32 idx = 0; idx < entry( Entry_Body )->num_entries(); idx++ )
{
AST* elem = entry( idx );
if ( elem->Type != Untyped )
{
log_failure( "AST::validate_body: Invalid entry in union body (needs to be untyped or comment) %s", elem->debug_str() );
return false;
}
}
break;
default:
log_failure( "AST::validate_body: Invalid this AST does not have a body %s", debug_str() );
return false;
}
return false;
}
#pragma endregion AST
#pragma region Gen Interface
void init()
{
using namespace StaticData;
// Setup the arrays
{
CodePools = Array<Pool>::init_reserve( Allocator_DataArrays, InitSize_DataArrays );
if ( CodePools == nullptr )
fatal( "gen::init: Failed to initialize the CodePools array" );
CodeEntriesArenas = Array<Arena>::init_reserve( Allocator_DataArrays, InitSize_DataArrays );
if ( CodeEntriesArenas == nullptr )
fatal( "gen::init: Failed to initialize the CodeEntriesPools array" );
StringArenas = Array<Arena>::init_reserve( Allocator_DataArrays, InitSize_DataArrays );
if ( StringArenas == nullptr )
fatal( "gen::init: Failed to initialize the StringArenas array" );
}
// Setup the code pool and code entries arena.
{
Pool code_pool = Pool::init( Allocator_CodePool, CodePool_NumBlocks, sizeof(AST) );
if ( code_pool.PhysicalStart == nullptr )
fatal( "gen::init: Failed to initialize the code pool" );
CodePools.append( code_pool );
Arena string_arena = Arena::init_from_allocator( Allocator_StringArena, SizePer_StringArena );
if ( string_arena.PhysicalStart == nullptr )
fatal( "gen::init: Failed to initialize the string arena" );
StringArenas.append( string_arena );
}
// Setup the hash tables
{
StringCache = StringTable::init( Allocator_StringTable );
if ( StringCache.Entries == nullptr )
fatal( "gen::init: Failed to initialize the StringCache");
}
Code::Global = make_code();
Code::Global->Name = get_cached_string( txt_StrC("Global Code") );
Code::Global->Content = Code::Global->Name;
Code::Invalid = make_code();
Code::Invalid.set_global();
# define def_constant_code_type( Type_ ) \
t_##Type_ = def_type( name(Type_) ); \
t_##Type_.set_global();
def_constant_code_type( auto );
def_constant_code_type( void );
def_constant_code_type( int );
def_constant_code_type( bool );
def_constant_code_type( char );
def_constant_code_type( wchar_t );
def_constant_code_type( class );
def_constant_code_type( typename );
#ifdef GEN_DEFINE_LIBRARY_CODE_CONSTANTS
t_b32 = def_type( name(b32) );
def_constant_code_type( s8 );
def_constant_code_type( s16 );
def_constant_code_type( s32 );
def_constant_code_type( s64 );
def_constant_code_type( u8 );
def_constant_code_type( u16 );
def_constant_code_type( u32 );
def_constant_code_type( u64 );
def_constant_code_type( sw );
def_constant_code_type( uw );
def_constant_code_type( f32 );
def_constant_code_type( f64 );
#endif
# undef def_constant_code_type
access_private = make_code();
access_private->Type = ECode::Access_Private;
access_private->Name = get_cached_string( txt_StrC("private:") );
access_private.set_global();
access_protected = make_code();
access_protected->Type = ECode::Access_Protected;
access_protected->Name = get_cached_string( txt_StrC("protected:") );
access_protected.set_global();
access_public = make_code();
access_public->Type = ECode::Access_Public;
access_public->Name = get_cached_string( txt_StrC("public:") );
access_public.set_global();
module_global_fragment = make_code();
module_global_fragment->Type = ECode::Untyped;
module_global_fragment->Name = get_cached_string( txt_StrC("module;") );
module_global_fragment->Content = module_global_fragment->Name;
module_global_fragment.set_global();
module_private_fragment = make_code();
module_private_fragment->Type = ECode::Untyped;
module_private_fragment->Name = get_cached_string( txt_StrC("module : private;") );
module_private_fragment->Content = module_private_fragment->Name;
module_private_fragment.set_global();
pragma_once = make_code();
pragma_once->Type = ECode::Untyped;
pragma_once->Name = get_cached_string( txt_StrC("#pragma once") );
pragma_once->Content = pragma_once->Name;
pragma_once.set_global();
# 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 def_constant_spec( Type_, ... ) \
spec_##Type_ = def_specifiers( num_args(__VA_ARGS__), __VA_ARGS__); \
spec_##Type_.set_global();
def_constant_spec( const, ESpecifier::Const );
def_constant_spec( consteval, ESpecifier::Consteval );
def_constant_spec( constexpr, ESpecifier::Constexpr );
def_constant_spec( constinit, ESpecifier::Constinit );
def_constant_spec( extern_linkage, ESpecifier::External_Linkage );
def_constant_spec( global, ESpecifier::Global );
def_constant_spec( inline, ESpecifier::Inline );
def_constant_spec( internal_linkage, ESpecifier::Internal_Linkage );
def_constant_spec( local_persist, ESpecifier::Local_Persist );
def_constant_spec( mutable, ESpecifier::Mutable );
def_constant_spec( ptr, ESpecifier::Ptr );
def_constant_spec( ref, ESpecifier::Ref );
def_constant_spec( register, ESpecifier::Register );
def_constant_spec( rvalue, ESpecifier::RValue );
def_constant_spec( static_member, ESpecifier::Static_Member );
def_constant_spec( thread_local, ESpecifier::Thread_Local );
def_constant_spec( volatile, ESpecifier::Volatile)
spec_local_persist = def_specifiers( 1, ESpecifier::Local_Persist );
spec_local_persist.set_global();
# pragma pop_macro( "global" )
# pragma pop_macro( "internal" )
# pragma pop_macro( "local_persist" )
# undef def_constant_spec
}
void deinit()
{
using namespace StaticData;
s32 index = 0;
s32 left = CodePools.num();
do
{
Pool* code_pool = & CodePools[index];
code_pool->free();
index++;
}
while ( left--, left );
index = 0;
left = StringArenas.num();
do
{
Arena* string_arena = & StringArenas[index];
string_arena->free();
index++;
}
while ( left--, left );
StringCache.destroy();
CodePools.free();
CodeEntriesArenas.free();
StringArenas.free();
}
inline
AllocatorInfo get_string_allocator( s32 str_length )
{
using namespace StaticData;
Arena& last = StringArenas.back();
if ( last.TotalUsed + str_length > last.TotalSize )
{
Arena new_arena = Arena::init_from_allocator( Allocator_StringArena, SizePer_StringArena );
if ( ! StringArenas.append( new_arena ) )
fatal( "gen::get_string_allocator: Failed to allocate a new string arena" );
last = StringArenas.back();
}
return last;
}
// Will either make or retrive a code string.
StringCached get_cached_string( StrC str )
{
using namespace StaticData;
s32 hash_length = str.Len > kilobytes(1) ? kilobytes(1) : str.Len;
u32 key = crc32( str.Ptr, hash_length );
{
StringCached* result = StringCache.get( key );
if ( result )
return * result;
}
String result = String::make( get_string_allocator( str.Len ), str );
StringCache.set( key, result );
return result;
}
/*
Used internally to retireve a Code object form the CodePool.
*/
Code make_code()
{
using namespace StaticData;
AllocatorInfo allocator = CodePools.back();
s32 index = 0;
s32 left = CodePools.num();
do
{
if ( CodePools[index].FreeList != nullptr )
{
allocator = CodePools[index];
break;
}
index++;
}
while ( left--, left );
if ( allocator.Data == nullptr )
{
Pool code_pool = Pool::init( Allocator_CodePool, CodePool_NumBlocks, sizeof(AST) );
if ( code_pool.PhysicalStart == nullptr )
fatal( "gen::make_code: Failed to allocate a new code pool - CodePool allcoator returned nullptr." );
if ( ! CodePools.append( code_pool ) )
fatal( "gen::make_code: Failed to allocate a new code pool - CodePools failed to append new pool." );
allocator = * CodePools;
}
Code result { rcast( AST*, alloc( allocator, sizeof(AST) )) };
result->Content = { nullptr };
result->Parent = nullptr;
result->Name = { nullptr };
result->Type = ECode::Invalid;
result->Op = EOperator::Invalid;
result->ModuleFlags = ModuleFlag::Invalid;
result->ParentAccess = AccessSpec::Invalid;
result->NumEntries = 0;
return result;
}
enum class OpValidateResult : u32
{
Fail,
Global,
Member
};
inline
OpValidateResult operator__validate( OperatorT op, CodeParams params_code, CodeType ret_type, CodeSpecifiers specifier )
{
using namespace EOperator;
if ( op == EOperator::Invalid )
{
log_failure("gen::def_operator: op cannot be invalid");
return OpValidateResult::Fail;
}
#pragma region Helper Macros
# define check_params() \
if ( ! params_code ) \
{ \
log_failure("gen::def_operator: params is null and operator%s requires it", to_str(op)); \
return OpValidateResult::Fail; \
} \
if ( params_code->Type != ECode::Parameters ) \
{ \
log_failure("gen::def_operator: params is not of Parameters type - %s", params_code->debug_str()); \
return OpValidateResult::Fail; \
}
# define check_param_eq_ret() \
if ( ! is_member_symbol && params_code.type() != ret_type ) \
{ \
log_failure("gen_def_operator: operator%s requires first parameter to equal return type\n" \
"param types: %s\n" \
"return type: %s", \
to_str(op), \
params_code->debug_str(), \
ret_type->debug_str() \
); \
return OpValidateResult::Fail; \
}
#pragma endregion Helper Macros
if ( ! ret_type )
{
log_failure("gen::def_operator: ret_type is null but is required by operator%s", to_str(op));
}
if ( ret_type->Type != ECode::Typename )
{
log_failure("gen::def_operator: ret_type is not of typename type - %s", ret_type->debug_str());
return OpValidateResult::Fail;
}
bool is_member_symbol = false;
switch ( op )
{
# define specs( ... ) num_args( __VA_ARGS__ ), __VA_ARGS__
case Assign:
check_params();
if ( params_code.num() > 1 )
{
log_failure("gen::def_operator: "
"operator%s does not support non-member definition (more than one parameter provided) - %s",
to_str(op),
params_code->debug_str()
);
return OpValidateResult::Fail;
}
is_member_symbol = true;
break;
case Assign_Add:
case Assign_Subtract:
case Assign_Multiply:
case Assign_Divide:
case Assign_Modulo:
case Assign_BAnd:
case Assign_BOr:
case Assign_BXOr:
case Assign_LShift:
case Assign_RShift:
check_params();
if ( params_code.num() == 1 )
is_member_symbol = true;
else
check_param_eq_ret();
if (params_code.num() > 2 )
{
log_failure("gen::def_operator: operator%s may not be defined with more than two parametes - param count; %d\n%s"
, to_str(op)
, params_code.num()
, params_code->debug_str()
);
return OpValidateResult::Fail;
}
break;
case Increment:
case Decrement:
// If its not set, it just means its a prefix member op.
if ( params_code )
{
if ( params_code->Type != ECode::Parameters )
{
log_failure("gen::def_operator: operator%s params code provided is not of Parameters type - %s"
, to_str(op)
, params_code->debug_str()
);
return OpValidateResult::Fail;
}
switch ( params_code.num() )
{
case 1:
if ( params_code.type()->is_equal( t_int ) )
is_member_symbol = true;
else
check_param_eq_ret();
break;
case 2:
check_param_eq_ret();
if ( ! params_code.get(1)->is_equal( t_int ) )
{
log_failure("gen::def_operator: "
"operator%s requires second parameter of non-member definition to be int for post-decrement",
to_str(op)
);
return OpValidateResult::Fail;
}
break;
default:
log_failure("gen::def_operator: operator%s recieved unexpected number of parameters recived %d instead of 0-2"
, to_str(op)
, params_code.num()
);
return OpValidateResult::Fail;
}
}
break;
case Unary_Plus:
case Unary_Minus:
case BNot:
if ( ! params_code )
is_member_symbol = true;
else
{
if ( params_code->Type != ECode::Parameters )
{
log_failure("gen::def_operator: params is not of Parameters type - %s", params_code->debug_str());
return OpValidateResult::Fail;
}
if ( params_code.type()->is_equal( ret_type ) )
{
log_failure("gen::def_operator: "
"operator%s is non-member symbol yet first paramter does not equal return type\n"
"param type: %s\n"
"return type: %s\n"
, params_code->debug_str()
, ret_type->debug_str()
);
return OpValidateResult::Fail;
}
if ( params_code.num() > 1 )
{
log_failure("gen::def_operator: operator%s may not have more than one parameter - param count: %d"
, to_str(op)
, params_code.num()
);
return OpValidateResult::Fail;
}
}
break;
case Add:
case Subtract:
case Multiply:
case Divide:
case Modulo:
case BAnd:
case BOr:
case BXOr:
case LShift:
case RShift:
check_params();
switch ( params_code.num() )
{
case 1:
is_member_symbol = true;
break;
case 2:
if ( ! params_code.type()->is_equal( ret_type ) )
{
log_failure("gen::def_operator: "
"operator%s is non-member symbol yet first paramter does not equal return type\n"
"param type: %s\n"
"return type: %s\n"
, params_code->debug_str()
, ret_type->debug_str()
);
return OpValidateResult::Fail;
}
break;
default:
log_failure("gen::def_operator: operator%s recieved unexpected number of paramters recived %d instead of 0-2"
, to_str(op)
, params_code.num()
);
return OpValidateResult::Fail;
}
break;
case UnaryNot:
if ( ! params_code )
is_member_symbol = true;
else
{
if ( params_code->Type != ECode::Parameters )
{
log_failure("gen::def_operator: params is not of Parameters type - %s", params_code->debug_str());
return OpValidateResult::Fail;
}
if ( params_code.num() != 1 )
{
log_failure("gen::def_operator: operator%s recieved unexpected number of paramters recived %d instead of 0-1"
, to_str(op)
, params_code.num()
);
return OpValidateResult::Fail;
}
}
if ( ! ret_type->is_equal( t_bool ))
{
log_failure("gen::def_operator: operator%s return type must be of type bool - %s"
, to_str(op)
, ret_type->debug_str()
);
return OpValidateResult::Fail;
}
break;
case LAnd:
case LOr:
case LEqual:
case LNot:
case Lesser:
case Greater:
case LesserEqual:
case GreaterEqual:
check_params();
switch ( params_code.num() )
{
case 1:
is_member_symbol = true;
break;
case 2:
break;
default:
log_failure("gen::def_operator: operator%s recieved unexpected number of paramters recived %d instead of 1-2"
, to_str(op)
, params_code.num()
);
return OpValidateResult::Fail;
}
break;
case Indirection:
case AddressOf:
case MemberOfPointer:
if ( params_code && params_code.num() > 1)
{
log_failure("gen::def_operator: operator%s recieved unexpected number of paramters recived %d instead of 0-1"
, to_str(op)
, params_code.num()
);
return OpValidateResult::Fail;
}
else
{
is_member_symbol = true;
}
break;
case PtrToMemOfPtr:
if ( params_code )
{
log_failure("gen::def_operator: operator%s expects no paramters - %s", to_str(op), params_code->debug_str());
return OpValidateResult::Fail;
}
break;
case Subscript:
case FunctionCall:
case Comma:
check_params();
break;
# undef specs
}
return is_member_symbol ? OpValidateResult::Member : OpValidateResult::Global;
# undef check_params
# undef check_ret_type
# undef check_param_eq_ret
}
void set_allocator_data_arrays( AllocatorInfo allocator )
{
StaticData::Allocator_DataArrays = allocator;
}
void set_allocator_code_pool( AllocatorInfo allocator )
{
StaticData::Allocator_CodePool = allocator;
}
void set_allocator_code_entries_arena( AllocatorInfo allocator )
{
StaticData::Allocator_CodeEntriesArena = allocator;
}
void set_allocator_string_arena( AllocatorInfo allocator )
{
StaticData::Allocator_StringArena = allocator;
}
void set_allocator_string_table( AllocatorInfo allocator )
{
StaticData::Allocator_StringArena = allocator;
}
#pragma region Helper Marcos
// This snippet is used in nearly all the functions.
# define name_check( Context_, Name_ ) \
{ \
if ( Name_.Len <= 0 ) \
{ \
log_failure( "gen::" stringize(Context_) ": Invalid name length provided - %d", Name_.Len ); \
return CodeInvalid; \
} \
\
if ( Name_.Ptr == nullptr ) \
{ \
log_failure( "gen::" stringize(Context_) ": name is null" ); \
return CodeInvalid; \
} \
}
# define null_check( Context_, Code_ ) \
if ( ! Code_ ) \
{ \
log_failure( "gen::" stringize(Context_) ": " stringize(Code_) " provided is null" ); \
return CodeInvalid; \
}
# define null_or_invalid_check( Context_, Code_ ) \
{ \
if ( ! Code_ ) \
{ \
log_failure( "gen::" stringize(Context_) ": " stringize(Code_) " provided is null" ); \
return CodeInvalid; \
} \
\
if ( Code_->is_invalid() ) \
{ \
log_failure("gen::" stringize(Context_) ": " stringize(Code_) " provided is invalid" ); \
return CodeInvalid; \
} \
}
# define not_implemented( Context_ ) \
log_failure( "gen::%s: This function is not implemented" ); \
return CodeInvalid;
#pragma endregion Helper Marcos
#pragma region Upfront Constructors
/*
The implementaiton of the upfront constructors involves bascially doing three things:
* Validate the arguments given to construct the intended type of AST is valid.
* Construct said AST type.
* Lock the AST (set to readonly) and return the valid object.
If any of the validation fails, it triggers a call to log_failure with as much info the give the user so that they can hopefully
identify the issue without having to debug too much (at least they can debug though...)
The largest of the functions is related to operator overload definitions.
The library validates a good protion of their form and thus the argument processing for is quite a bit.
*/
CodeAttributes def_attributes( StrC content )
{
if ( content.Len <= 0 || content.Ptr == nullptr )
{
log_failure( "gen::def_attributes: Invalid attributes provided" );
return CodeInvalid;
}
Code
result = make_code();
result->Type = ECode::PlatformAttributes;
result->Name = get_cached_string( content );
result->Content = result->Name;
return (CodeAttributes) result;
}
CodeComment def_comment( StrC content )
{
if ( content.Len <= 0 || content.Ptr == nullptr )
{
log_failure( "gen::def_comment: Invalid comment provided:" );
return CodeInvalid;
}
Code
result = make_code();
result->Type = ECode::Comment;
result->Name = get_cached_string( content );
result->Content = result->Name;
return (CodeComment) result;
}
CodeClass def_class( StrC name
, Code body
, Code parent, AccessSpec parent_access
, Code attributes
, ModuleFlag mflags )
{
using namespace ECode;
using namespace EEntry;
name_check( def_class, name );
if ( attributes && attributes->Type != PlatformAttributes )
{
log_failure( "gen::def_class: attributes was not a 'PlatformAttributes' type: %s", attributes->debug_str() );
return CodeInvalid;
}
if ( parent && (parent->Type != Class || parent->Type != Struct || parent->Type != Typename || parent->Type != Untyped) )
{
log_failure( "gen::def_class: parent provided is not type 'Class', 'Struct', 'Typeanme', or 'Untyped': %s", parent->debug_str() );
return CodeInvalid;
}
Code
result = make_code();
result->Name = get_cached_string( name );
result->ModuleFlags = mflags;
if ( body )
{
switch ( body->Type )
{
case Class_Body:
case Untyped:
break;
default:
log_failure("gen::def_class: body must be either of Class_Body or Untyped type - %s", body->debug_str());
return CodeInvalid;
}
result->Type = Class;
result->entry( Entry_Body ) = body;
}
else
{
result->Type = Class_Fwd;
}
if ( attributes )
result->entry( Entry_Attributes ) = attributes;
if ( parent )
{
result->ParentAccess = parent_access;
result->entry( Entry_Parent ) = parent;
}
return (CodeClass) result;
}
CodeEnum def_enum( StrC name
, Code body, Code type
, EnumT specifier, Code attributes
, ModuleFlag mflags )
{
using namespace ECode;
using namespace EEntry;
name_check( def_enum, name );
if ( type && type->Type != Typename )
{
log_failure( "gen::def_enum: enum underlying type provided was not of type Typename: %s", type->debug_str() );
return CodeInvalid;
}
if ( attributes && attributes->Type != PlatformAttributes )
{
log_failure( "gen::def_enum: attributes was not a 'PlatformAttributes' type: %s", attributes->debug_str() );
return CodeInvalid;
}
Code
result = make_code();
result->Name = get_cached_string( name );
result->ModuleFlags = mflags;
if ( body )
{
switch ( body->Type )
{
case Enum_Body:
case Untyped:
break;
default:
log_failure( "gen::def_enum: body must be of Enum_Body or Untyped type %s", body->debug_str());
return CodeInvalid;
}
result->Type = specifier == EnumClass ?
Enum_Class : Enum;
result->add_entry( body );
}
else
{
result->Type = specifier == EnumClass ?
Enum_Class_Fwd : Enum_Fwd;
}
if ( attributes )
result->add_entry( attributes );
if ( type )
{
result->entry( Entry_Parent ) = type;
}
else if ( result->Type != Enum_Class_Fwd && result->Type != Enum_Fwd )
{
log_failure( "gen::def_enum: enum forward declaration must have an underlying type" );
return CodeInvalid;
}
return (CodeEnum) result;
}
CodeExec def_execution( StrC content )
{
if ( content.Len <= 0 || content.Ptr == nullptr )
{
log_failure( "gen::def_execution: Invalid execution provided" );
return CodeInvalid;
}
Code
result = make_code();
result->Type = ECode::Execution;
result->Name = get_cached_string( content );
result->Content = result->Name;
return (CodeExec) result;
}
CodeExtern def_extern_link( StrC name, Code body, ModuleFlag mflags )
{
using namespace ECode;
using namespace EEntry;
name_check( def_extern_linkage, name );
null_check( def_extern_linkage, body );
if ( body->Type != Extern_Linkage_Body && body->Type != Untyped )
{
log_failure("gen::def_extern_linkage: body is not of extern_linkage or untyped type %s", body->debug_str());
return CodeInvalid;
}
Code
result = make_code();
result->Type = Extern_Linkage;
result->Name = get_cached_string( name );
result->ModuleFlags = mflags;
result->entry( Entry_Body ) = body;
return (CodeExtern) result;
}
CodeFriend def_friend( Code symbol )
{
using namespace ECode;
using namespace EEntry;
null_check( def_friend, symbol );
switch ( symbol->Type )
{
case Class_Fwd:
case Function_Fwd:
case Operator_Fwd:
case Struct_Fwd:
case Class:
case Function:
case Operator:
case Struct:
break;
default:
log_failure("gen::def_friend: requires declartion to have class, function, operator, or struct - %s", symbol->debug_str());
return CodeInvalid;
}
Code
result = make_code();
result->Type = Friend;
result->entry( Entry_Value ) = symbol;
return (CodeFriend) result;
}
CodeFn def_function( StrC name
, CodeParams params , CodeType ret_type, Code body
, CodeSpecifiers specifiers, CodeAttributes attributes
, ModuleFlag mflags )
{
using namespace ECode;
using namespace EEntry;
name_check( def_function, name );
if ( params && params->Type != Parameters )
{
log_failure( "gen::def_function: params was not a `Parameters` type: %s", params->debug_str() );
return CodeInvalid;
}
if ( ret_type && ret_type->Type != Typename )
{
log_failure( "gen::def_function: ret_type was not a Typename: %s", ret_type->debug_str() );
return CodeInvalid;
}
if ( specifiers && specifiers->Type != Specifiers )
{
log_failure( "gen::def_function: specifiers was not a `Specifiers` type: %s", specifiers->debug_str() );
return CodeInvalid;
}
if ( attributes && attributes->Type != PlatformAttributes )
{
log_failure( "gen::def_function: attributes was not a `PlatformAttributes` type: %s", attributes->debug_str() );
return CodeInvalid;
}
Code
result = make_code();
result->Name = get_cached_string( name );
result->ModuleFlags = mflags;
if ( body )
{
switch ( body->Type )
{
case Function_Body:
case Execution:
case Untyped:
break;
default:
{
log_failure("gen::def_function: body must be either of Function_Body, Execution, or Untyped type. %s", body->debug_str());
return CodeInvalid;
}
}
result->Type = Function;
result->entry( Entry_Body ) = body;
}
else
{
result->Type = Function_Fwd;
}
if ( attributes )
result->add_entry( attributes );
if ( specifiers )
result->add_entry( specifiers );
if ( ret_type )
{
result->add_entry( ret_type );
}
else
{
result->add_entry( t_void );
}
if ( params )
result->add_entry( params );
return (CodeFn) result;
}
CodeInclude def_include ( StrC path )
{
if ( path.Len <= 0 || path.Ptr == nullptr )
{
log_failure( "gen::def_include: Invalid path provided - %d" );
return CodeInvalid;
}
Code
result = make_code();
result->Type = ECode::Preprocessor_Include;
result->Name = get_cached_string( path );
result->Content = result->Name;
return (CodeInclude) result;
}
CodeModule def_module( StrC name, ModuleFlag mflags )
{
name_check( def_module, name );
Code
result = make_code();
result->Type = ECode::Module;
result->Name = get_cached_string( name );
result->Content = result->Name;
result->ModuleFlags = mflags;
return (CodeModule) result;
}
CodeNamespace def_namespace( StrC name, Code body, ModuleFlag mflags )
{
using namespace ECode;
name_check( def_namespace, name );
null_check( def_namespace, body );
if ( body->Type != Namespace_Body && body->Type != Untyped )
{
log_failure("gen::def_namespace: body is not of namespace or untyped type %s", body->debug_str());
return CodeInvalid;
}
Code
result = make_code();
result->Type = Namespace;
result->Name = get_cached_string( name );
result->ModuleFlags = mflags;
result->entry( EEntry::Entry_Body ) = body;
return (CodeNamespace) result;
}
CodeOperator def_operator( OperatorT op
, CodeParams params_code, CodeType ret_type, Code body
, CodeSpecifiers specifiers, CodeAttributes attributes
, ModuleFlag mflags )
{
using namespace ECode;
if ( attributes && attributes->Type != PlatformAttributes )
{
log_failure( "gen::def_operator: PlatformAttributes was provided but its not of attributes type: %s", attributes->debug_str() );
return CodeInvalid;
}
if ( specifiers && specifiers->Type != Specifiers )
{
log_failure( "gen::def_operator: Specifiers was provided but its not of specifiers type: %s", specifiers->debug_str() );
return CodeInvalid;
}
OpValidateResult check_result = operator__validate( op, params_code, ret_type, specifiers );
if ( check_result == OpValidateResult::Fail )
{
return CodeInvalid;
}
char const* name = str_fmt_buf( "operator %s", to_str(op) );
Code
result = make_code();
result->Name = get_cached_string( { str_len(name), name } );
result->ModuleFlags = mflags;
if ( body )
{
switch ( body->Type )
{
case Function_Body:
case Execution:
case Untyped:
break;
default:
{
log_failure("gen::def_operator: body must be either of Function_Body, Execution, or Untyped type. %s", body->debug_str());
return CodeInvalid;
}
}
result->Type = check_result == OpValidateResult::Global ?
Operator : Operator_Member;
result->add_entry( body );
}
else
{
result->Type = check_result == OpValidateResult::Global ?
Operator_Fwd : Operator_Member_Fwd;
}
if ( attributes )
result->add_entry( attributes );
if ( specifiers )
result->add_entry( specifiers );
result->add_entry( ret_type );
if (params_code)
result->add_entry( params_code );
return (CodeOperator) result;
}
CodeOpCast def_operator_cast( Code type, Code body )
{
using namespace ECode;
null_check( def_operator_cast, type );
if ( type->Type != Typename )
{
log_failure( "gen::def_operator_cast: type is not a typename - %s", type->debug_str() );
return CodeInvalid;
}
Code result = make_code();
if (body)
{
result->Type = Operator_Cast;
if ( body->Type != Function_Body && body->Type != Execution )
{
log_failure( "gen::def_operator_cast: body is not of function body or execution type - %s", body->debug_str() );
return CodeInvalid;
}
result->add_entry( body );
}
else
{
result->Type = Operator_Cast_Fwd;
}
result->add_entry( type );
return (CodeOpCast) result;
}
CodeParams def_param( Code type, StrC name, Code value )
{
using namespace ECode;
name_check( def_param, name );
null_check( def_param, type );
if ( type->Type != Typename )
{
log_failure( "gen::def_param: type is not a typename - %s", type->debug_str() );
return CodeInvalid;
}
if ( value && value->Type != Untyped )
{
log_failure( "gen::def_param: value is not untyped - %s", value->debug_str() );
return CodeInvalid;
}
Code
result = make_code();
result->Type = Parameters;
result->Name = get_cached_string( name );
result->add_entry( type );
if ( value )
result->add_entry( value );
return (CodeParams) result;
}
CodeSpecifiers def_specifier( SpecifierT spec )
{
CodeSpecifiers
result = (CodeSpecifiers) make_code();
result->Type = ECode::Specifiers;
result.add( spec );
return result;
}
CodeStruct def_struct( StrC name
, Code body
, CodeType parent, AccessSpec parent_access
, CodeAttributes attributes
, ModuleFlag mflags )
{
using namespace ECode;
using namespace EEntry;
name_check( def_struct, name );
if ( attributes && attributes->Type != PlatformAttributes )
{
log_failure( "gen::def_struct: attributes was not a `PlatformAttributes` type" );
return CodeInvalid;
}
if ( parent && parent->Type != Typename )
{
log_failure( "gen::def_struct: parent was not a `Struct` type" );
return CodeInvalid;
}
if ( body && body->Type != Struct_Body )
{
log_failure( "gen::def_struct: body was not a Struct_Body type" );
return CodeInvalid;
}
Code
result = make_code();
result->Name = get_cached_string( name );
result->ModuleFlags = mflags;
if ( body )
{
result->Type = Struct;
result->entry( Entry_Body ) = body;
}
else
{
result->Type = Struct_Fwd;
}
if ( attributes )
result->entry( Entry_Attributes ) = attributes;
if ( parent )
{
result->ParentAccess = parent_access;
result->entry( Entry_Parent ) = parent;
}
return (CodeStruct) result;
}
CodeTemplate def_template( Code params, Code definition, ModuleFlag mflags )
{
using namespace EEntry;
null_check( def_template, definition );
if ( params && params->Type != ECode::Parameters )
{
log_failure( "gen::def_template: params is not of parameters type - %s", params->debug_str() );
return CodeInvalid;
}
switch (definition->Type )
{
case ECode::Class:
case ECode::Function:
case ECode::Struct:
case ECode::Variable:
case ECode::Using:
break;
default:
log_failure( "gen::def_template: definition is not of class, function, struct, variable, or using type - %s", definition->debug_str() );
}
Code
result = make_code();
result->Type = ECode::Template;
result->ModuleFlags = mflags;
result->entry( Entry_Value ) = definition;
result->add_entry( params );
return (CodeTemplate) result;
}
CodeType def_type( StrC name, Code arrayexpr, Code specifiers, Code attributes )
{
using namespace EEntry;
name_check( def_type, name );
if ( attributes && attributes->Type != ECode::PlatformAttributes )
{
log_failure( "gen::def_type: attributes is not of attributes type - %s", attributes->debug_str() );
return CodeInvalid;
}
if ( specifiers && specifiers->Type != ECode::Specifiers )
{
log_failure( "gen::def_type: specifiers is not of specifiers type - %s", specifiers->debug_str() );
return CodeInvalid;
}
if ( arrayexpr && arrayexpr->Type != ECode::Untyped )
{
log_failure( "gen::def_type: arrayexpr is not of untyped type - %s", arrayexpr->debug_str() );
return CodeInvalid;
}
Code
result = make_code();
result->Name = get_cached_string( name );
result->Type = ECode::Typename;
if ( attributes )
result->entry( Entry_Attributes) = attributes;
if ( specifiers )
result->entry( Entry_Specifiers ) = specifiers;
if ( arrayexpr )
result->entry( Entry_Array_Expression) = arrayexpr;
return (CodeType) result;
}
CodeTypedef def_typedef( StrC name, Code type, Code attributes, ModuleFlag mflags )
{
using namespace EEntry;
name_check( def_typedef, name );
null_check( def_typedef, type );
if ( type->Type != ECode::Typename )
{
log_failure( "gen::def_typedef: type was not a Typename" );
return CodeInvalid;
}
if ( attributes && attributes->Type != ECode::PlatformAttributes )
{
log_failure( "gen::def_typedef: attributes was not a PlatformAttributes" );
return CodeInvalid;
}
// Registering the type.
Code registered_type = def_type( name );
if ( ! registered_type )
{
log_failure( "gen::def_typedef: failed to register type" );
return CodeInvalid;
}
Code
result = make_code();
result->Name = get_cached_string( name );
result->Type = ECode::Typedef;
result->ModuleFlags = mflags;
result->entry( Entry_Value ) = type;
if ( attributes )
result->entry( Entry_Attributes ) = attributes;
return (CodeTypedef) result;
}
CodeUnion def_union( StrC name, Code body, Code attributes, ModuleFlag mflags )
{
using namespace EEntry;
null_check( def_union, body );
if ( body->Type != ECode::Union_Body )
{
log_failure( "gen::def_union: body was not a Union_Body type - %s", body->debug_str() );
return CodeInvalid;
}
if ( attributes && attributes->Type != ECode::PlatformAttributes )
{
log_failure( "gen::def_union: attributes was not a PlatformAttributes type - %s", attributes->debug_str() );
return CodeInvalid;
}
Code
result = make_code();
result->ModuleFlags = mflags;
result->Type = ECode::Union;
if ( name.Ptr )
result->Name = get_cached_string( name );
result->entry( Entry_Body ) = body;
if ( attributes )
result->entry( Entry_Attributes ) = attributes;
return (CodeUnion) result;
}
CodeUsing def_using( StrC name, Code type
, Code attributes
, ModuleFlag mflags )
{
using namespace EEntry;
name_check( def_using, name );
null_check( def_using, type );
Code register_type = def_type( name );
if ( ! register_type )
{
log_failure( "gen::def_using: failed to register type" );
return CodeInvalid;
}
if ( attributes && attributes->Type != ECode::PlatformAttributes )
{
log_failure( "gen::def_using: attributes was not a PlatformAttributes type - %s", attributes->debug_str() );
return CodeInvalid;
}
Code
result = make_code();
result->Name = get_cached_string( name );
result->ModuleFlags = mflags;
result->Type = ECode::Using;
if ( type )
result->entry( Entry_Value ) = type;
if ( attributes )
result->add_entry( attributes );
return (CodeUsing) result;
}
CodeUsingNamespace def_using_namespace( StrC name )
{
name_check( def_using_namespace, name );
Code
result = make_code();
result->Name = get_cached_string( name );
result->Content = result->Name;
result->Type = ECode::Using_Namespace;
return (CodeUsingNamespace) result;
}
CodeVar def_variable( Code type, StrC name, Code value
, Code specifiers, Code attributes
, ModuleFlag mflags )
{
using namespace EEntry;
name_check( def_variable, name );
null_check( def_variable, type );
if ( attributes && attributes->Type != ECode::PlatformAttributes )
{
log_failure( "gen::def_variable: attributes was not a `PlatformAttributes` type" );
return CodeInvalid;
}
if ( specifiers && specifiers->Type != ECode::Specifiers )
{
log_failure( "gen::def_variable: specifiers was not a `Specifiers` type" );
return CodeInvalid;
}
if ( type->Type != ECode::Typename )
{
log_failure( "gen::def_variable: type was not a Typename" );
return CodeInvalid;
}
if ( value && value->Type != ECode::Untyped )
{
log_failure( "gen::def_variable: value was not a `Untyped` type" );
return CodeInvalid;
}
Code
result = make_code();
result->Name = get_cached_string( name );
result->Type = ECode::Variable;
result->ModuleFlags = mflags;
result->entry( Entry_Type ) = type;
if ( attributes )
result->entry( Entry_Attributes ) = attributes;
if ( specifiers )
result->entry( Entry_Specifiers ) = specifiers;
if ( value )
result->entry( Entry_Value) = value;
return (CodeVar) result;
}
/*
Body related functions typically follow the same implementation pattern.
Opted to use inline helper macros to get the implementaiton done.
The implementation pattern is as follows:
* Validate a valid parameter num was provided, or code array
def_body_start or def_body_code_array_start( <name of function >)
* Begin the code entry do-while loop, make sure each entry is valid processing its type in the switc
def_body_code_validation_start( <name of function> )
* Define the switch case statements between the macros.
* Add the code entry, finish the closing implemenation for the do-while loop.
def_body_code_validation_end( <name of function> )
* Lock the body AST and return it.
If a function's implementation deviates from the macros then its just writen it out.
*/
#pragma region Helper Macros for def_**_body functions
# define def_body_start( Name_ ) \
using namespace ECode; \
\
if ( num <= 0 ) \
{ \
log_failure("gen::" stringize(Name_) ": num cannot be zero or negative"); \
return CodeInvalid; \
}
# define def_body_code_array_start( Name_ ) \
using namespace ECode; \
\
if ( num <= 0 ) \
{ \
log_failure("gen::" stringize(Name_) ": num cannot be zero or negative"); \
return CodeInvalid; \
} \
\
if ( codes == nullptr ) \
{ \
log_failure("gen::" stringize(Name_)" : Provided a null array of codes"); \
return CodeInvalid; \
}
# define def_body_code_validation_start( Name_ ) \
do \
{ \
Code_POD pod = va_arg(va, Code_POD); \
Code entry = pcast(Code, pod); \
\
if ( ! entry ) \
{ \
log_failure("gen::" stringize(Name_) ": Provided an null entry"); \
return CodeInvalid; \
} \
\
switch ( entry->Type ) \
{
# define def_body_code_array_validation_start( Name_ ) \
do \
{ \
Code entry = *codes; codes++; \
\
if ( ! entry ) \
{ \
log_failure("gen::" stringize(Name_) ": Provided an null entry"); \
return CodeInvalid; \
} \
\
switch ( entry->Type ) \
{
# define def_body_code_validation_end( Name_ ) \
log_failure("gen::" stringize(Name_) ": Entry type is not allowed: %s", entry->debug_str() ); \
return CodeInvalid; \
\
default: \
break; \
} \
\
result->add_entry( entry ); \
} \
while ( num--, num > 0 )
#pragma endregion Helper Macros for def_**_body functions
CodeClassBody def_class_body( s32 num, ... )
{
def_body_start( def_class_body );
Code
result = make_code();
result->Type = Class_Body;
va_list va;
va_start(va, num);
def_body_code_validation_start( def_class_body );
AST_BODY_CLASS_UNALLOWED_TYPES
def_body_code_validation_end( def_class_body );
va_end(va);
return (CodeClassBody) result;
}
CodeClassBody def_class_body( s32 num, Code* codes )
{
def_body_code_array_start( def_class_body );
Code
result = make_code();
result->Type = Function_Body;
def_body_code_array_validation_start( def_class_body );
AST_BODY_CLASS_UNALLOWED_TYPES
def_body_code_validation_end( def_class_body );
return (CodeClassBody) result;
}
CodeEnumBody def_enum_body( s32 num, ... )
{
def_body_start( def_enum_body );
Code
result = make_code();
result->Type = Enum_Body;
va_list va;
va_start(va, num);
do
{
Code_POD pod = va_arg(va, Code_POD);
Code entry = pcast(Code, pod);
if ( ! entry )
{
log_failure("gen::def_enum_body: Provided a null entry");
return CodeInvalid;
}
if ( entry->Type != Untyped && entry->Type != Comment )
{
log_failure("gen::def_enum_body: Entry type is not allowed - %s. Must be of untyped or comment type.", entry->debug_str() ); \
return CodeInvalid;
}
result->add_entry( entry );
}
while ( num--, num > 0 );
va_end(va);
return (CodeEnumBody) result;
}
CodeEnumBody def_enum_body( s32 num, Code* codes )
{
def_body_code_array_start( def_enum_body );
Code
result = make_code();
result->Type = Enum_Body;
do
{
Code entry = *codes;
if ( ! entry )
{
log_failure("gen::def_enum_body: Provided a null entry");
return CodeInvalid;
}
if ( entry->Type != Untyped && entry->Type != Comment )
{
log_failure("gen::def_enum_body: Entry type is not allowed: %s", entry->debug_str() ); \
return CodeInvalid;
}
result->add_entry( entry );
}
while ( codes++, num--, num > 0 );
return (CodeEnumBody) result;
}
CodeExportBody def_export_body( s32 num, ... )
{
def_body_start( def_export_body );
Code
result = make_code();
result->Type = Export_Body;
va_list va;
va_start(va, num);
def_body_code_validation_start( def_export_body );
AST_BODY_EXPORT_UNALLOWED_TYPES
def_body_code_validation_end( def_export_body );
va_end(va);
return (CodeExportBody) result;
}
CodeExportBody def_export_body( s32 num, Code* codes )
{
def_body_code_array_start( def_export_body );
Code
result = make_code();
result->Type = Export_Body;
def_body_code_array_validation_start( def_export_body );
AST_BODY_EXPORT_UNALLOWED_TYPES
def_body_code_validation_end( def_export_body );
return (CodeExportBody) result;
}
CodeExternBody def_extern_link_body( s32 num, ... )
{
def_body_start( def_extern_linkage_body );
Code
result = make_code();
result->Type = Extern_Linkage_Body;
va_list va;
va_start(va, num);
def_body_code_validation_start( def_extern_linkage_body );
AST_BODY_EXTERN_LINKAGE_UNALLOWED_TYPES
def_body_code_validation_end( def_extern_linkage_body );
va_end(va);
return (CodeExternBody) result;
}
CodeExternBody def_extern_link_body( s32 num, Code* codes )
{
def_body_code_array_start( def_extern_linkage_body );
Code
result = make_code();
result->Type = Extern_Linkage_Body;
def_body_code_array_validation_start( def_extern_linkage_body );
AST_BODY_EXTERN_LINKAGE_UNALLOWED_TYPES
def_body_code_validation_end( def_extern_linkage_body );
return (CodeExternBody) result;
}
CodeFnBody def_function_body( s32 num, ... )
{
def_body_start( def_function_body );
Code
result = make_code();
result->Type = Function_Body;
va_list va;
va_start(va, num);
def_body_code_validation_start( def_function_body );
AST_BODY_FUNCTION_UNALLOWED_TYPES
def_body_code_validation_end( def_function_body );
va_end(va);
return (CodeFnBody) result;
}
Code def_function_body( s32 num, Code* codes )
{
def_body_code_array_start( def_function_body );
Code
result = make_code();
result->Type = Function_Body;
def_body_code_array_validation_start( def_function_body );
AST_BODY_FUNCTION_UNALLOWED_TYPES
def_body_code_validation_end( def_function_body );
return result;
}
Code def_global_body( s32 num, ... )
{
def_body_start( def_global_body );
Code
result = make_code();
result->Type = Global_Body;
va_list va;
va_start(va, num);
def_body_code_validation_start( def_global_body );
AST_BODY_GLOBAL_UNALLOWED_TYPES
def_body_code_validation_end( def_global_body );
va_end(va);
return result;
}
Code def_global_body( s32 num, Code* codes )
{
def_body_code_array_start( def_global_body );
Code
result = make_code();
result->Type = Global_Body;
def_body_code_array_validation_start( def_global_body );
AST_BODY_GLOBAL_UNALLOWED_TYPES
def_body_code_validation_end( def_global_body );
return result;
}
Code def_namespace_body( s32 num, ... )
{
def_body_start( def_namespace_body );
Code
result = make_code();
result->Type = Namespace_Body;
va_list va;
va_start(va, num);
def_body_code_validation_start( def_namespace_body );
AST_BODY_NAMESPACE_UNALLOWED_TYPES
def_body_code_validation_end( def_namespace_body );
va_end(va);
return result;
}
Code def_namespace_body( s32 num, Code* codes )
{
def_body_code_array_start( def_namespace_body );
Code
result = make_code();
result->Type = Global_Body;
def_body_code_array_validation_start( def_namespace_body );
AST_BODY_NAMESPACE_UNALLOWED_TYPES
def_body_code_validation_end( def_namespace_body );
return result;
}
CodeParams def_params( s32 num, ... )
{
using namespace EEntry;
def_body_start( def_params );
va_list va;
va_start(va, num);
Code_POD pod = va_arg(va, Code_POD);
Code param = pcast( Code, pod );
null_check( def_params, param );
if ( param->Type != Parameters )
{
log_failure( "gen::def_params: param %d is not a Parameters", num - num + 1 );
return CodeInvalid;
}
Code result = { param->duplicate() };
while ( -- num )
{
pod = va_arg(va, Code_POD);
param = pcast( Code, pod );
if ( param->Type != Parameters )
{
log_failure( "gen::def_params: param %d is not a Parameters", num - num + 1 );
return CodeInvalid;
}
result->entry( Entry_Parameters ) = param;
}
va_end(va);
return (CodeParams) result;
}
Code def_params( s32 num, Code* codes )
{
def_body_code_array_start( def_params );
# define check_current() \
if ( current == nullptr ) \
{ \
log_failure("gen::def_params: Provide a null code in codes array"); \
return Code::Invalid; \
} \
\
if (current->Type != Parameters ) \
{ \
log_failure("gen::def_params: Code in coes array is not of paramter type - %s", current->debug_str() ); \
return Code::Invalid; \
}
Code current = * codes;
check_current();
Code
result = make_code();
result->Name = current->Name;
result->Type = current->Type;
result->add_entry( current->entry( 0 ) );
while( codes++, current = * codes, num--, num > 0 )
{
check_current();
result->add_entry( current );
}
# undef check_current
return result;
}
CodeSpecifiers def_specifiers( s32 num, ... )
{
if ( num <= 0 )
{
log_failure("gen::def_specifiers: num cannot be zero or less");
return CodeInvalid;
}
if ( num > AST::ArrSpecs_Cap )
{
log_failure("gen::def_specifiers: num of speciifers to define AST larger than AST specicifier capacity - %d", num);
return CodeInvalid;
}
CodeSpecifiers
result = (CodeSpecifiers) make_code();
result->Type = ECode::Specifiers;
va_list va;
va_start(va, num);
do
{
SpecifierT type = (SpecifierT)va_arg(va, int);
result.add( type );
}
while ( --num, num );
va_end(va);
return result;
}
CodeSpecifiers def_specifiers( s32 num, SpecifierT* specs )
{
if ( num <= 0 )
{
log_failure("gen::def_specifiers: num cannot be zero or less");
return CodeInvalid;
}
if ( num > AST::ArrSpecs_Cap )
{
log_failure("gen::def_specifiers: num of speciifers to define AST larger than AST specicifier capacity - %d", num);
return CodeInvalid;
}
CodeSpecifiers
result = (CodeSpecifiers) make_code();
result->Type = ECode::Specifiers;
s32 idx = 0;
do
{
result.add( specs[idx] );
idx++;
}
while ( --num, num );
return result;
}
CodeStructBody def_struct_body( s32 num, ... )
{
def_body_start( def_struct_body );
Code
result = make_code();
result->Type = Struct_Body;
va_list va;
va_start(va, num);
def_body_code_validation_start( def_struct_body );
AST_BODY_STRUCT_UNALLOWED_TYPES
def_body_code_validation_end( def_struct_body );
va_end(va);
return (CodeStructBody) result;
}
CodeStructBody def_struct_body( s32 num, Code* codes )
{
def_body_code_array_start( def_struct_body );
Code
result = make_code();
result->Type = Struct_Body;
def_body_code_array_validation_start( def_struct_body );
AST_BODY_STRUCT_UNALLOWED_TYPES
def_body_code_validation_end( def_struct_body );
return (CodeStructBody) result;
}
Code def_union_body( s32 num, ... )
{
def_body_start( def_union_body );
Code
result = make_code();
result->Type = Union_Body;
va_list va;
va_start(va, num);
do
{
Code_POD pod = va_arg(va, Code_POD);
Code entry = pcast( Code, pod );
if ( ! entry )
{
log_failure("gen::def_union_body: Provided a null entry");
return Code::Invalid;
}
if ( entry->Type != Untyped && entry->Type != Comment )
{
log_failure("gen::def_union_body: Entry type is not allowed - %s. Must be of untyped or comment type.", entry->debug_str() ); \
return Code::Invalid;
}
result->add_entry( entry );
}
while ( num--, num > 0 );
va_end(va);
return result;
}
CodeUnion def_union_body( s32 num, Code* codes )
{
def_body_code_array_start( def_union_body );
Code
result = make_code();
result->Type = Union_Body;
do
{
Code entry = *codes;
if ( ! entry )
{
log_failure("gen::def_union_body: Provided a null entry");
return Code::Invalid;
}
if ( entry->Type != Untyped && entry->Type != Comment )
{
log_failure("gen::def_union_body: Entry type is not allowed: %s", entry->debug_str() ); \
return Code::Invalid;
}
result->add_entry( entry );
}
while ( codes++, num--, num > 0 );
return result;
}
# undef name_check
# undef null_check
# undef null_or_invalid_check
#pragma endregion Upfront Constructors
#pragma region Parsing Constructors
#ifdef GEN_FEATURE_PARSING
/*
These constructors are the most implementation intensive other than the edtior or scanner.
*/
namespace Parser
{
/*
This is a simple lexer that focuses on tokenizing only tokens relevant to the library.
It will not be capable of lexing C++ code with unsupported features.
*/
# define Define_TokType \
Entry( Access_Private, "private" ) \
Entry( Access_Protected, "protected" ) \
Entry( Access_Public, "public" ) \
Entry( Access_MemberSymbol, "." ) \
Entry( Access_StaticSymbol, "::") \
Entry( Ampersand, "&" ) \
Entry( Ampersand_DBL, "&&" ) \
Entry( Assign_Classifer, ":" ) \
Entry( BraceCurly_Open, "{" ) \
Entry( BraceCurly_Close, "}" ) \
Entry( BraceSquare_Open, "[" ) \
Entry( BraceSquare_Close, "]" ) \
Entry( Capture_Start, "(" ) \
Entry( Capture_End, ")" ) \
Entry( Comment, "__comment__" ) \
Entry( Char, "__char__" ) \
Entry( Comma, "," ) \
Entry( Decl_Class, "class" ) \
Entry( Decl_Enum, "enum" ) \
Entry( Decl_Extern_Linkage, "extern" ) \
Entry( Decl_Friend, "friend" ) \
Entry( Decl_Module, "module" ) \
Entry( Decl_Namespace, "namespace" ) \
Entry( Decl_Operator, "operator" ) \
Entry( Decl_Struct, "struct" ) \
Entry( Decl_Template, "template" ) \
Entry( Decl_Typedef, "typedef" ) \
Entry( Decl_Using, "using" ) \
Entry( Decl_Union, "union" ) \
Entry( Identifier, "__SymID__" ) \
Entry( Module_Import, "import" ) \
Entry( Module_Export, "export" ) \
Entry( Number, "number" ) \
Entry( Operator, "operator" ) \
Entry( Spec_Alignas, "alignas" ) \
Entry( Spec_Const, "const" ) \
Entry( Spec_Consteval, "consteval" ) \
Entry( Spec_Constexpr, "constexpr" ) \
Entry( Spec_Constinit, "constinit" ) \
Entry( Spec_Extern, "extern" ) \
Entry( Spec_Global, "global" ) \
Entry( Spec_Inline, "inline" ) \
Entry( Spec_Internal_Linkage, "internal" ) \
Entry( Spec_LocalPersist, "local_persist" ) \
Entry( Spec_Mutable, "mutable" ) \
Entry( Spec_Static, "static" ) \
Entry( Spec_ThreadLocal, "thread_local" ) \
Entry( Spec_Volatile, "volatile") \
Entry( Star, "*" ) \
Entry( Statement_End, ";" ) \
Entry( String, "__String__" ) \
Entry( Type_Unsigned, "unsigned" ) \
Entry( Type_Signed, "signed" ) \
Entry( Type_Short, "short" ) \
Entry( Type_Long, "long" ) \
Entry( Type_char, "char" ) \
Entry( Type_int, "int" ) \
Entry( Type_double, "double" )
enum class TokType : u32
{
# define Entry( Name_, Str_ ) Name_,
Define_TokType
# undef Entry
Attr_Keyword,
Num,
Invalid
};
struct Token
{
char const* Text;
sptr Length;
TokType Type;
bool IsAssign;
operator bool()
{
return Text && Length && Type != TokType::Invalid;
}
operator StrC()
{
return { Length, Text };
}
};
internal inline
TokType get_tok_type( char const* word, s32 length )
{
local_persist
StrC lookup[(u32)TokType::Num] =
{
# define Entry( Name_, Str_ ) { sizeof(Str_), Str_ },
Define_TokType
# undef Entry
{ sizeof(Attribute::Keyword), Attribute::Keyword },
};
for ( u32 index = 0; index < (u32)TokType::Num; index++ )
{
s32 lookup_len = lookup[index].Len - 1;
char const* lookup_str = lookup[index].Ptr;
if ( lookup_len != length )
continue;
if ( str_compare( word, lookup_str, lookup_len ) == 0 )
return scast(TokType, index);
}
return TokType::Invalid;
}
internal inline
char const* str_tok_type( TokType type )
{
local_persist
char const* lookup[(u32)TokType::Num] =
{
# define Entry( Name_, Str_ ) Str_,
Define_TokType
# undef Entry
Attribute::Keyword,
};
return lookup[(u32)type];
}
# undef Define_TokType
internal inline
bool tok_is_specifier( Token const& tok )
{
return (tok.Type <= TokType::Star && tok.Type >= TokType::Spec_Alignas)
|| tok.Type == TokType::Ampersand
|| tok.Type == TokType::Ampersand_DBL
;
}
internal inline
bool tok_is_access_specifier( Token const& tok )
{
return tok.Type >= TokType::Access_Private && tok.Type <= TokType::Access_Public;
}
internal inline
AccessSpec tok_to_access_specifier( Token const& tok )
{
return scast(AccessSpec, tok.Type);
}
Arena LexAllocator;
struct TokArray
{
Array<Token> Arr;
s32 Idx;
bool __eat( TokType type, char const* context )
{
if ( Arr.num() - Idx <= 0 )
{
log_failure( "gen::%s: No tokens left", context );
return Code::Invalid;
}
if ( Arr[Idx].Type != type )
{
String token_str = String::make( Memory::GlobalAllocator, { Arr[Idx].Length, Arr[Idx].Text } );
log_failure( "gen::%s: expected %s, got %s", context, str_tok_type(type), str_tok_type(Arr[Idx].Type) );
return Code::Invalid;
}
Idx++;
return true;
}
Token& current()
{
return Arr[Idx];
}
Token& previous()
{
return Arr[Idx - 1];
}
Token* next()
{
return Idx + 1 < Arr.num() ? &Arr[Idx + 1] : nullptr;
}
};
TokArray lex( StrC content )
{
# define current ( * scanner )
# define move_forward() \
left--; \
scanner++
# define SkipWhitespace() \
while ( left && char_is_space( current ) ) \
{ \
move_forward(); \
}
# define SkipWhitespace_Checked( Context_, Msg_, ... ) \
while ( left && char_is_space( current ) ) \
{ \
move_forward(); \
} \
if ( left <= 0 ) \
{ \
log_failure( "gen::" txt(Context_) ": " Msg_, __VA_ARGS__ ); \
return { 0, nullptr }; \
}
do_once_start
// TODO : Use the global memory allocator for this...
LexAllocator = Arena::init_from_allocator( heap(), megabytes(10) );
if ( LexAllocator.PhysicalStart == nullptr )
{
log_failure( "gen::lex: failed to allocate memory for parsing constructor's lexer");
return { { nullptr }, 0 };
}
do_once_end
local_persist thread_local
Array<Token> Tokens = { nullptr };
s32 left = content.Len;
char const* scanner = content.Ptr;
char const* word = scanner;
s32 word_length = 0;
SkipWhitespace();
if ( left <= 0 )
{
log_failure( "gen::lex: no tokens found (only whitespace provided)" );
return { { nullptr }, 0 };
}
if ( Tokens )
Tokens.clear();
Tokens = Array<Token>::init_reserve( LexAllocator, content.Len / 8 );
while (left )
{
Token token = { nullptr, 0, TokType::Invalid, false };
SkipWhitespace();
if ( left <= 0 )
break;
switch ( current )
{
case '.':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::Access_MemberSymbol;
if (left)
move_forward();
goto FoundToken;
case '&' :
token.Text = scanner;
token.Length = 1;
token.Type = TokType::Ampersand;
if (left)
move_forward();
if ( current == '&' ) // &&
{
token.Length = 2;
token.Type = TokType::Ampersand_DBL;
if (left)
move_forward();
}
goto FoundToken;
case ':':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::Assign_Classifer;
if (left)
move_forward();
if ( current == ':' )
{
move_forward();
token.Type = TokType::Access_StaticSymbol;
token.Length++;
}
goto FoundToken;
case '{':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::BraceCurly_Open;
if (left)
move_forward();
goto FoundToken;
case '}':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::BraceCurly_Close;
if (left)
move_forward();
goto FoundToken;
case '[':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::BraceSquare_Open;
if ( left )
{
move_forward();
if ( current == ']' )
{
token.Length = 2;
token.Type = TokType::Operator;
move_forward();
}
}
goto FoundToken;
case ']':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::BraceSquare_Close;
if (left)
move_forward();
goto FoundToken;
case '(':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::Capture_Start;
if (left)
move_forward();
goto FoundToken;
case ')':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::Capture_End;
if (left)
move_forward();
goto FoundToken;
case '\'':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::Char;
move_forward();
while ( left && current != '\'' )
{
move_forward();
token.Length++;
}
if ( left )
{
move_forward();
token.Length++;
}
goto FoundToken;
case ',':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::Comma;
if (left)
move_forward();
goto FoundToken;
case '*':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::Star;
if (left)
move_forward();
goto FoundToken;
case ';':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::Statement_End;
if (left)
move_forward();
goto FoundToken;
case '"':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::String;
move_forward();
while ( left )
{
if ( current == '"' )
{
move_forward();
break;
}
if ( current == '\\' )
{
move_forward();
token.Length++;
if ( left )
{
move_forward();
token.Length++;
}
continue;
}
move_forward();
token.Length++;
}
goto FoundToken;
// All other operators we just label as an operator and move forward.
case '=':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::Operator;
token.IsAssign = true;
if (left)
move_forward();
goto FoundToken;
case '+':
case '%':
case '^':
case '~':
case '!':
case '<':
case '>':
case '|':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::Operator;
if (left)
move_forward();
if ( current == '=' )
{
token.Length++;
token.IsAssign = true;
if (left)
move_forward();
}
else while ( left && current == *(scanner - 1) && token.Length < 3 )
{
token.Length++;
if (left)
move_forward();
}
goto FoundToken;
// Dash is unfortunatlly a bit more complicated...
case '-':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::Operator;
if ( left )
{
move_forward();
if ( current == '>' )
{
token.Length++;
move_forward();
if ( current == '*' )
{
token.Length++;
move_forward();
}
}
else if ( current == '=' )
{
token.Length++;
token.IsAssign = true;
if (left)
move_forward();
}
else while ( left && current == *(scanner - 1) && token.Length < 3 )
{
token.Length++;
if (left)
move_forward();
}
}
goto FoundToken;
case '/':
token.Text = scanner;
token.Length = 1;
token.Type = TokType::Operator;
if ( left )
{
move_forward();
if ( current == '/' )
{
token.Type = TokType::Comment;
move_forward();
token.Text = scanner;
token.Length = 0;
while ( left && current != '\n' )
{
move_forward();
token.Length++;
}
}
else if ( current == '*' )
{
token.Type = TokType::Comment;
move_forward();
token.Text = scanner;
token.Length = 0;
while ( left && ( current != '*' && *(scanner + 1) != '/' ) )
{
move_forward();
token.Length++;
}
move_forward();
move_forward();
}
}
goto FoundToken;
}
if ( char_is_alpha( current ) || current == '_' )
{
token.Text = scanner;
token.Length = 1;
move_forward();
while ( left && ( char_is_alphanumeric(current) || current == '_' ) )
{
move_forward();
token.Length++;
}
goto FoundToken;
}
else if ( char_is_digit(current) )
{
// This is a very brute force lex, no checks are done for validity of literal.
token.Text = scanner;
token.Length = 1;
token.Type = TokType::Number;
move_forward();
if (left
&& ( current == 'x' || current == 'X'
|| current == 'b' || current == 'B'
|| current == 'o' || current == 'O' )
)
{
move_forward();
token.Length++;
while ( left && char_is_hex_digit(current) )
{
move_forward();
token.Length++;
}
goto FoundToken;
}
while ( left && char_is_digit(current) )
{
move_forward();
token.Length++;
}
if ( left && current == '.' )
{
move_forward();
token.Length++;
while ( left && char_is_digit(current) )
{
move_forward();
token.Length++;
}
}
goto FoundToken;
}
else
{
String context_str = String::fmt_buf( Memory::GlobalAllocator, "%s", scanner, min( 100, left ) );
log_failure( "Failed to lex token %s", context_str );
// Skip to next whitespace since we can't know if anything else is valid until then.
while ( left && ! char_is_space( current ) )
{
move_forward();
}
}
FoundToken:
if ( token.Type != TokType::Invalid )
{
Tokens.append( token );
continue;
}
TokType type = get_tok_type( token.Text, token.Length );
if ( type == TokType::Invalid)
{
// Its most likely an identifier...
type = TokType::Identifier;
}
token.Type = type;
Tokens.append( token );
}
if ( Tokens.num() == 0 )
{
log_failure( "Failed to lex any tokens" );
return { { nullptr }, 0 };
}
return { Tokens, 0 };
# undef current
# undef move_forward
# undef SkipWhitespace
# undef SkipWhitespace_Checked
}
}
#pragma region Helper Macros
# define check_parse_args( func, def ) \
if ( def.Len <= 0 ) \
{ \
log_failure( "gen::" stringize(func) ": length must greater than 0" ); \
return CodeInvalid; \
} \
if ( def.Ptr == nullptr ) \
{ \
log_failure( "gen::" stringize(func) ": def was null" ); \
return CodeInvalid; \
}
# define nexttok toks.next()
# define currtok toks.current()
# define prevtok toks.previous()
# define eat( Type_ ) toks.__eat( Type_, context )
# define left ( toks.Arr.num() - toks.Idx )
# define check( Type_ ) ( left && currtok.Type == Type_ )
#pragma endregion Helper Macros
internal Code parse_function_body ( Parser::TokArray& toks, char const* context );
internal Code parse_global_nspace ( Parser::TokArray& toks, char const* context );
internal Code parse_class ( Parser::TokArray& toks, char const* context );
internal Code parse_enum ( Parser::TokArray& toks, char const* context );
internal Code parse_export_body ( Parser::TokArray& toks, char const* context );
internal Code parse_extern_link_body ( Parser::TokArray& toks, char const* context );
internal Code parse_exten_link ( Parser::TokArray& toks, char const* context );
internal Code parse_friend ( Parser::TokArray& toks, char const* context );
internal Code parse_function ( Parser::TokArray& toks, char const* context );
internal Code parse_namespace ( Parser::TokArray& toks, char const* context );
internal Code parse_operator_cast ( Parser::TokArray& toks, char const* context );
internal Code parse_struct ( Parser::TokArray& toks, char const* context );
internal Code parse_variable ( Parser::TokArray& toks, char const* context );
internal Code parse_template ( Parser::TokArray& toks, char const* context );
internal Code parse_type ( Parser::TokArray& toks, char const* context );
internal Code parse_typedef ( Parser::TokArray& toks, char const* context );
internal Code parse_union ( Parser::TokArray& toks, char const* context );
internal Code parse_using ( Parser::TokArray& toks, char const* context );
internal inline
Code parse_array_decl( Parser::TokArray& toks, char const* context )
{
using namespace Parser;
if ( check( TokType::BraceSquare_Open ) )
{
eat( TokType::BraceSquare_Open );
if ( left == 0 )
{
log_failure( "%s: Error, unexpected end of typedef definition ( '[]' scope started )", stringize(parse_typedef) );
return Code::Invalid;
}
if ( currtok.Type == TokType::BraceSquare_Close )
{
log_failure( "%s: Error, empty array expression in typedef definition", stringize(parse_typedef) );
return Code::Invalid;
}
Token untyped_tok = currtok;
while ( left && currtok.Type != TokType::BraceSquare_Close )
{
eat( currtok.Type );
}
untyped_tok.Length = ( (sptr)prevtok.Text + prevtok.Length ) - (sptr)untyped_tok.Text;
Code array_expr = untyped_str( untyped_tok );
if ( left == 0 )
{
log_failure( "%s: Error, unexpected end of type definition, expected ]", stringize(parse_typedef) );
return Code::Invalid;
}
if ( currtok.Type != TokType::BraceSquare_Close )
{
log_failure( "%s: Error, expected ] in type definition, not %s", stringize(parse_typedef), str_tok_type( currtok.Type ) );
return Code::Invalid;
}
eat( TokType::BraceSquare_Close );
return array_expr;
}
return { nullptr };
}
internal inline
Parser::Token parse_identifier( Parser::TokArray& toks, char const* context )
{
using namespace Parser;
Token name = currtok;
eat( TokType::Identifier );
while ( check( TokType::Access_StaticSymbol ) )
{
eat( TokType::Access_StaticSymbol );
if ( left == 0 )
{
log_failure( "%s: Error, unexpected end of type definition, expected identifier", context );
return { nullptr, 0, TokType::Invalid };
}
if ( currtok.Type != TokType::Identifier )
{
log_failure( "%s: Error, expected identifier in type definition, not %s", context, str_tok_type( currtok.Type ) );
return { nullptr, 0, TokType::Invalid };
}
name.Length = ( (sptr)currtok.Text + currtok.Length ) - (sptr)name.Text;
eat( TokType::Identifier );
}
return name;
}
internal
Code parse_params( Parser::TokArray& toks, char const* context, bool use_template_capture = false )
{
using namespace Parser;
using namespace ECode;
if ( ! use_template_capture )
eat( TokType::Capture_Start );
else
{
if ( check ( TokType::Operator ) && currtok.Text[0] == '<' )
eat( TokType::Operator );
}
if ( ! use_template_capture && check(TokType::Capture_End) )
{
eat( TokType::Capture_End );
return { nullptr };
}
Code type = { nullptr };
Code value = { nullptr };
type = parse_type( toks, context );
if ( type == Code::Invalid )
return Code::Invalid;
Token name = { nullptr, 0, TokType::Invalid, false };
if ( check( TokType::Identifier ) )
{
name = currtok;
eat( TokType::Identifier );
if ( currtok.IsAssign )
{
eat( TokType::Operator );
Token value_tok = currtok;
if ( currtok.Type == TokType::Statement_End )
{
log_failure( "gen::%s: Expected value after assignment operator", context );
return Code::Invalid;
}
while ( left && currtok.Type != TokType::Statement_End )
{
value_tok.Length = ( (sptr)currtok.Text + currtok.Length ) - (sptr)value_tok.Text;
eat( currtok.Type );
}
value = parse_type( toks, context );
}
}
Code
result = make_code();
result->Type = Parameters;
if ( name.Length > 0 )
result->Name = get_cached_string( name );
result->add_entry( type );
if ( value )
result->add_entry( value );
while ( left
&& use_template_capture ?
currtok.Type != TokType::Operator && currtok.Text[0] != '>'
: currtok.Type != TokType::Capture_End )
{
eat( TokType::Comma );
Code type = { nullptr };
Code value = { nullptr };
type = parse_type( toks, context );
if ( type == Code::Invalid )
return Code::Invalid;
name = { nullptr, 0, TokType::Invalid, false };
if ( check( TokType::Identifier ) )
{
name = currtok;
eat( TokType::Identifier );
if ( currtok.IsAssign )
{
eat( TokType::Operator );
Token value_tok = currtok;
if ( currtok.Type == TokType::Statement_End )
{
log_failure( "gen::%s: Expected value after assignment operator", context );
return Code::Invalid;
}
while ( left && currtok.Type != TokType::Statement_End )
{
value_tok.Length = ( (sptr)currtok.Text + currtok.Length ) - (sptr)value_tok.Text;
eat( currtok.Type );
}
value = parse_type( toks, context );
}
}
Code
param = make_code();
param->Type = Parameters;
if ( name.Length > 0 )
param->Name = get_cached_string( name );
param->add_entry( type );
if ( value )
param->add_entry( value );
result->add_entry( param );
}
if ( ! use_template_capture )
eat( TokType::Capture_End );
else
{
if ( ! check( TokType::Operator) || currtok.Text[0] != '>' )
{
log_failure("gen::parse_template: expected '<' after 'template' keyword. %s", str_tok_type( currtok.Type ));
return Code::Invalid;
}
eat( TokType::Operator );
}
return result;
# undef context
}
// Function parsing is handled in multiple places because its initial signature is shared with variable parsing
internal inline
Code parse_function_after_name(
ModuleFlag mflags
, Code attributes
, Code specifiers
, Code ret_type
, StrC name
, Parser::TokArray& toks
, char const* context
)
{
using namespace Parser;
Code params = parse_params( toks, stringize(parse_function) );
Code body = { nullptr };
if ( check( TokType::BraceCurly_Open ) )
{
body = parse_function_body( toks, stringize(parse_function) );
if ( body == Code::Invalid )
return Code::Invalid;
}
else
{
eat( TokType::Statement_End );
}
using namespace ECode;
Code
result = make_code();
result->Name = get_cached_string( name );
result->ModuleFlags = mflags;
if ( body )
{
switch ( body->Type )
{
case Function_Body:
case Untyped:
break;
default:
{
log_failure("gen::def_function: body must be either of Function_Body or Untyped type. %s", body->debug_str());
return Code::Invalid;
}
}
result->Type = Function;
result->add_entry( body );
}
else
{
result->Type = Function_Fwd;
}
if ( specifiers )
result->add_entry( specifiers );
result->add_entry( ret_type );
if ( params )
result->add_entry( params );
return result;
}
internal inline
Code parse_operator_after_ret_type( ModuleFlag mflags, Code attributes, Code specifiers, Code ret_type, Parser::TokArray& toks, char const* context )
{
using namespace Parser;
using namespace EOperator;
// Parse Operator
eat( TokType::Decl_Operator );
if ( ! check( TokType::Operator ) )
{
log_failure( "gen::%s: Expected operator after 'operator' keyword", context );
return Code::Invalid;
}
OperatorT op = Invalid;
switch ( currtok.Text[0] )
{
case '+':
{
if ( currtok.Text[1] == '=' )
op = Assign_Add;
else
op = Add;
}
break;
case '-':
{
if ( currtok.Text[1] == '=' )
op = Assign_Subtract;
else
op = Subtract;
}
break;
case '*':
{
if ( currtok.Text[1] == '=' )
op = Assign_Multiply;
else
{
Token& finder = prevtok;
while ( finder.Type != TokType::Decl_Operator )
{
if ( finder.Type == TokType::Identifier)
{
op = Indirection;
break;
}
}
if ( op == Invalid)
op = Multiply;
}
}
break;
case '/':
{
if ( currtok.Text[1] == '=' )
op = Assign_Divide;
else
op = Divide;
}
break;
case '%':
{
if ( currtok.Text[1] == '=' )
op = Assign_Modulo;
else
op = Modulo;
}
break;
case '&':
{
if ( currtok.Text[1] == '=' )
op = Assign_BAnd;
else if ( currtok.Text[1] == '&' )
op = LAnd;
else
{
if ( op == Invalid )
op = BAnd;
}
}
break;
case '|':
{
if ( currtok.Text[1] == '=' )
op = Assign_BOr;
else if ( currtok.Text[1] == '|' )
op = LOr;
else
op = BOr;
}
break;
case '^':
{
if ( currtok.Text[1] == '=' )
op = Assign_BXOr;
else
op = BXOr;
}
break;
case '~':
{
op = BNot;
}
break;
case '!':
{
if ( currtok.Text[1] == '=' )
op = LNot;
else
op = UnaryNot;
}
break;
case '=':
{
if ( currtok.Text[1] == '=' )
op = LEqual;
else
op = Assign;
}
break;
case '<':
{
if ( currtok.Text[1] == '=' )
op = LEqual;
else if ( currtok.Text[1] == '<' )
{
if ( currtok.Text[2] == '=' )
op = Assign_LShift;
else
op = LShift;
}
else
op = Lesser;
}
break;
case '>':
{
if ( currtok.Text[1] == '=' )
op = GreaterEqual;
else if ( currtok.Text[1] == '>' )
{
if ( currtok.Text[2] == '=' )
op = Assign_RShift;
else
op = RShift;
}
else
op = Greater;
}
break;
case '(':
{
if ( currtok.Text[1] == ')' )
op = FunctionCall;
else
op = Invalid;
}
break;
case '[':
{
if ( currtok.Text[1] == ']' )
op = Subscript;
else
op = Invalid;
}
break;
default:
{
break;
}
}
if ( op == Invalid )
{
log_failure( "gen::%s: Invalid operator '%s'", context, currtok.Text );
return Code::Invalid;
}
eat( TokType::Operator );
// Parse Params
Code params = parse_params( toks, stringize(parse_operator) );
// Parse Body
Code body = { nullptr };
if ( check( TokType::BraceCurly_Open ) )
{
body = parse_function_body( toks, stringize(parse_function) );
if ( body == Code::Invalid )
return Code::Invalid;
}
else
{
eat( TokType::Statement_End );
}
// OpValidateResult check_result = operator__validate( op, params, ret_type, specifiers );
Code result = def_operator( op, params, ret_type, body, specifiers, attributes, mflags );
return result;
}
// Variable parsing is handled in multiple places because its initial signature is shared with function parsing
internal inline
Code parse_variable_after_name(
ModuleFlag mflags
, Code attributes
, Code specifiers
, Code type
, StrC name
, Parser::TokArray& toks
, char const* context )
{
using namespace Parser;
Code array_expr = parse_array_decl( toks, stringize(parse_variable) );
Code expr = Code::Invalid;
if ( currtok.IsAssign )
{
eat( TokType::Operator );
Token expr_tok = currtok;
if ( currtok.Type == TokType::Statement_End )
{
log_failure( "gen::parse_variable: expected expression after assignment operator" );
return Code::Invalid;
}
while ( left && currtok.Type != TokType::Statement_End )
{
eat( currtok.Type );
}
expr_tok.Length = ( (sptr)currtok.Text + currtok.Length ) - (sptr)expr_tok.Text;
expr = untyped_str( expr_tok );
}
eat( TokType::Statement_End );
using namespace ECode;
Code
result = make_code();
result->Type = Variable;
result->Name = get_cached_string( name );
result->ModuleFlags = mflags;
result->add_entry( type );
if (array_expr.is_valid() )
type->add_entry( array_expr );
if ( attributes.is_valid() )
result->add_entry( attributes );
if (specifiers.is_valid() )
result->add_entry( specifiers );
if ( expr.is_valid() )
result->add_entry( expr );
return result;
}
internal inline
Code parse_variable_assignment( Parser::TokArray& toks, char const* context )
{
using namespace Parser;
Code expr = Code::Invalid;
if ( currtok.IsAssign )
{
eat( TokType::Operator );
Token expr_tok = currtok;
if ( currtok.Type == TokType::Statement_End )
{
log_failure( "gen::parse_variable: expected expression after assignment operator" );
return Code::Invalid;
}
while ( left && currtok.Type != TokType::Statement_End )
{
expr_tok.Length = ( (sptr)currtok.Text + currtok.Length ) - (sptr)expr_tok.Text;
eat( currtok.Type );
}
expr = untyped_str( expr_tok );
}
return expr;
}
internal inline
Code parse_operator_function_or_variable( bool expects_function, Code attributes, Code specifiers, Parser::TokArray& toks, char const* context )
{
using namespace Parser;
Code result = Code::Invalid;
Code type = parse_type( toks, stringize(parse_variable) );
if ( type == Code::Invalid )
return Code::Invalid;
if ( check( TokType::Operator) )
{
// Dealing with an operator overload
result = parse_operator_after_ret_type( ModuleFlag::None, attributes, specifiers, type, toks, stringize(parse_template) );
}
else
{
StrC name = currtok;
eat( TokType::Identifier );
if ( check( TokType::Capture_Start) )
{
// Dealing with a function
result = parse_function_after_name( ModuleFlag::None, attributes, specifiers, type, name, toks, stringize(parse_template) );
}
else
{
if ( expects_function )
{
log_failure( "gen::parse_template: expected function declaration (consteval was used)" );
return Code::Invalid;
}
// Dealing with a variable
result = parse_variable_after_name( ModuleFlag::None, attributes, specifiers, type, name, toks, stringize(parse_template) );
}
}
return result;
}
internal
Code parse_class_struct_body( Parser::TokType which, Parser::TokArray& toks, char const* context )
{
using namespace Parser;
using namespace ECode;
eat( TokType::BraceCurly_Open );
Code
result = make_code();
if ( which == TokType::Decl_Class )
result->Type = Class_Body;
else
result->Type = Struct_Body;
while ( left && currtok.Type != TokType::BraceCurly_Close )
{
Code member = Code::Invalid;
Code attributes = { nullptr };
Code specifiers = { nullptr };
bool expects_function = false;
switch ( currtok.Type )
{
case TokType::Comment:
member = def_comment( currtok );
eat( TokType::Comment );
break;
case TokType::Access_Public:
member = access_public;
eat( TokType::Access_Public );
eat( TokType::Assign_Classifer );
break;
case TokType::Access_Protected:
member = access_protected;
eat( TokType::Access_Protected );
eat( TokType::Assign_Classifer );
break;
case TokType::Access_Private:
member = access_private;
eat( TokType::Access_Private );
eat( TokType::Assign_Classifer );
break;
case TokType::Decl_Class:
member = parse_class( toks, context );
break;
case TokType::Decl_Enum:
member = parse_enum( toks, context );
break;
case TokType::Decl_Friend:
member = parse_friend( toks, context );
break;
case TokType::Decl_Operator:
member = parse_operator_cast( toks, context );
break;
case TokType::Decl_Struct:
member = parse_struct( toks, context );
break;
case TokType::Decl_Template:
member = parse_template( toks, context );
break;
case TokType::Decl_Typedef:
member = parse_typedef( toks, context );
break;
case TokType::Decl_Union:
member = parse_variable( toks, context );
break;
case TokType::Decl_Using:
member = parse_using( toks, context );
break;
case TokType::BraceSquare_Open:
case TokType::Attr_Keyword:
{
// Standard attribute
if ( currtok.Type == TokType::BraceSquare_Open )
{
eat( TokType::BraceSquare_Open );
if ( currtok.Type != TokType::BraceSquare_Open )
{
log_failure( "%s: Error, expected attribute name", context );
return result;
}
while ( left && currtok.Type != TokType::BraceSquare_Close )
{
// TODO : Parse attributes
}
eat( TokType::BraceSquare_Close );
eat( TokType::BraceSquare_Close );
}
// Platform Specific attribute
eat( TokType::Attr_Keyword );
eat( TokType::Capture_Start );
// TODO : Parse attributes
eat( TokType::Capture_End );
}
//! Fallthrough intended
case TokType::Spec_Consteval:
case TokType::Spec_Constexpr:
case TokType::Spec_Constinit:
case TokType::Spec_Inline:
case TokType::Spec_Mutable:
case TokType::Spec_Static:
case TokType::Spec_Volatile:
{
SpecifierT specs_found[16] { ESpecifier::Num_Specifiers };
s32 num_specifiers = 0;
while ( left && tok_is_specifier( currtok ) )
{
SpecifierT spec = ESpecifier::to_type( currtok );
switch ( spec )
{
case ESpecifier::Constexpr:
case ESpecifier::Constinit:
case ESpecifier::Inline:
case ESpecifier::Mutable:
case ESpecifier::Static_Member:
case ESpecifier::Volatile:
break;
case ESpecifier::Consteval:
expects_function = true;
break;
default:
log_failure( "gen::parse_class_struct_body: invalid specifier " "%s" " for variable", ESpecifier::to_str(spec) );
return Code::Invalid;
}
specs_found[num_specifiers] = spec;
num_specifiers++;
eat( currtok.Type );
}
if ( num_specifiers )
{
specifiers = def_specifiers( num_specifiers, specs_found );
}
}
//! Fallthrough intentional
case TokType::Identifier:
case TokType::Spec_Const:
case TokType::Type_Unsigned:
case TokType::Type_Signed:
case TokType::Type_Short:
case TokType::Type_Long:
{
member = parse_operator_function_or_variable( expects_function, attributes, specifiers, toks, context );
}
break;
default:
Token untyped_tok = currtok;
while ( left && currtok.Type != TokType::BraceCurly_Close )
{
untyped_tok.Length = ( (sptr)currtok.Text + currtok.Length ) - (sptr)untyped_tok.Text;
eat( currtok.Type );
}
member = untyped_str( untyped_tok );
break;
}
if ( member == Code::Invalid )
{
log_failure( "gen::parse_variable: failed to parse member" );
return Code::Invalid;
}
result->add_entry( member );
}
eat( TokType::BraceCurly_Close );
return result;
}
internal
Code parse_class_struct( Parser::TokType which, Parser::TokArray& toks, char const* context )
{
using namespace Parser;
if ( which != TokType::Decl_Class && which != TokType::Decl_Struct )
{
log_failure( "%s: Error, expected class or struct, not %s", context, str_tok_type( which ) );
return Code::Invalid;
}
Token name { nullptr, 0, TokType::Invalid };
Code parent = { nullptr };
Code body = { nullptr };
Code attributes = { nullptr };
ModuleFlag mflags = ModuleFlag::None;
Code result = Code::Invalid;
// TODO : Parse module specifiers
eat( which );
// TODO : Parse attributes
name = parse_identifier( toks, context );
AccessSpec access = AccessSpec::Invalid;
Token parent_tok = { nullptr, 0, TokType::Invalid };
if ( check( TokType::Assign_Classifer ) )
{
eat( TokType::Assign_Classifer );
if ( tok_is_access_specifier( currtok ) )
{
access = tok_to_access_specifier( currtok );
}
parent_tok = parse_identifier( toks, context );
}
if ( check( TokType::BraceCurly_Open ) )
{
body = parse_class_struct_body( which, toks, context );
}
eat( TokType::Statement_End );
if ( parent_tok )
parent = def_type( parent_tok );
if ( which == TokType::Decl_Class )
result = def_class( name, body, parent, access
// TODO : Set these up later
, NoCode // Attributes
, ModuleFlag::None
);
else
result = def_struct( name, body, (CodeType)parent, access
// TODO : Set these up later
, NoCode // Attributes
, ModuleFlag::None
);
return result;
}
internal
Code parse_function_body( Parser::TokArray& toks, char const* context )
{
using namespace Parser;
using namespace ECode;
eat( TokType::BraceCurly_Open );
Code
result = make_code();
result->Type = Function_Body;
Token start = currtok;
s32 level = 0;
while ( left && ( currtok.Type != TokType::BraceCurly_Close || level > 0 ) )
{
if ( currtok.Type == TokType::BraceCurly_Open )
level++;
else if ( currtok.Type == TokType::BraceCurly_Close && level > 0 )
level--;
eat( currtok.Type );
}
Token previous = prevtok;
s32 len = ( (sptr)prevtok.Text + prevtok.Length ) - (sptr)start.Text;
if ( len > 0 )
{
result->add_entry( def_execution( { len, start.Text } ));
}
eat( TokType::BraceCurly_Close );
return result;
}
internal
Code parse_global_nspace( CodeT which, Parser::TokArray& toks, char const* context )
{
using namespace Parser;
using namespace ECode;
if ( which != Namespace_Body && which != Global_Body && which != Export_Body && which != Extern_Linkage_Body )
return Code::Invalid;
if ( which != Global_Body )
eat( TokType::BraceCurly_Open );
Code
result = make_code();
result->Type = which;
while ( left && currtok.Type != TokType::BraceCurly_Close )
{
Code member = Code::Invalid;
Code attributes = { nullptr };
Code specifiers = { nullptr };
bool expects_function = false;
switch ( currtok.Type )
{
case TokType::Comment:
member = def_comment( currtok );
eat( TokType::Comment );
break;
case TokType::Decl_Enum:
member = parse_enum( toks, context);
break;
case TokType::Decl_Class:
member = parse_class( toks, context );
break;
case TokType::Decl_Extern_Linkage:
if ( which == Extern_Linkage_Body )
log_failure( "gen::parse_global_nspace: nested extern linkage" );
member = parse_extern_link_body( toks, context );
break;
case TokType::Decl_Namespace:
member = parse_namespace( toks, context );
break;
case TokType::Decl_Struct:
member = parse_struct( toks, context );
break;
case TokType::Decl_Template:
member = parse_template( toks, context );
break;
case TokType::Decl_Typedef:
member = parse_typedef( toks, context );
break;
case TokType::Decl_Union:
member = parse_union( toks, context );
break;
case TokType::Decl_Using:
member = parse_using( toks, context );
break;
case TokType::Module_Export:
if ( which == Export_Body )
log_failure( "gen::parse_global_nspace: nested export declaration" );
member = parse_export_body( toks, context );
break;
case TokType::Module_Import:
{
not_implemented();
}
//! Fallthrough intentional
case TokType::BraceSquare_Open:
case TokType::Attr_Keyword:
{
not_implemented();
// Standard attribute
if ( currtok.Type == TokType::BraceSquare_Open )
{
eat( TokType::BraceSquare_Open );
if ( currtok.Type != TokType::BraceSquare_Open )
{
log_failure( "%s: Error, expected attribute name", context );
return result;
}
while ( left && currtok.Type != TokType::BraceSquare_Close )
{
// TODO : Parse attributes
}
eat( TokType::BraceSquare_Close );
eat( TokType::BraceSquare_Close );
}
// Platform Specific attribute
eat( TokType::Attr_Keyword );
eat( TokType::Capture_Start );
// TODO : Parse attributes
eat( TokType::Capture_End );
}
//! Fallthrough intentional
case TokType::Spec_Consteval:
case TokType::Spec_Constexpr:
case TokType::Spec_Constinit:
case TokType::Spec_Extern:
case TokType::Spec_Global:
case TokType::Spec_Inline:
case TokType::Spec_Internal_Linkage:
case TokType::Spec_Static:
{
SpecifierT specs_found[16] { ESpecifier::Num_Specifiers };
s32 num_specifiers = 0;
while ( left && tok_is_specifier( currtok ) )
{
SpecifierT spec = ESpecifier::to_type( currtok );
switch ( spec )
{
case ESpecifier::Constexpr:
case ESpecifier::Constinit:
case ESpecifier::Inline:
case ESpecifier::Mutable:
case ESpecifier::Static_Member:
case ESpecifier::Volatile:
break;
case ESpecifier::Consteval:
expects_function = true;
break;
default:
log_failure( "gen::parse_global_nspace: invalid specifier " "%s" " for variable", ESpecifier::to_str(spec) );
return Code::Invalid;
}
specs_found[num_specifiers] = spec;
num_specifiers++;
eat( currtok.Type );
}
if ( num_specifiers )
{
specifiers = def_specifiers( num_specifiers, specs_found );
}
}
//! Fallthrough intentional
case TokType::Identifier:
case TokType::Spec_Const:
case TokType::Type_Long:
case TokType::Type_Short:
case TokType::Type_Signed:
case TokType::Type_Unsigned:
{
member = parse_operator_function_or_variable( expects_function, attributes, specifiers, toks, context );
}
}
if ( member == Code::Invalid )
{
log_failure( "gen::%s: failed to parse extern linkage member", context );
return Code::Invalid;
}
result->add_entry( member );
}
if ( which != Global_Body )
eat( TokType::BraceCurly_Close );
return result;
}
internal
Code parse_class( Parser::TokArray& toks, char const* context )
{
return parse_class_struct( Parser::TokType::Decl_Class, toks, context );
}
CodeClass parse_class( StrC def )
{
check_parse_args( parse_class, def );
using namespace Parser;
TokArray toks = lex( def );
if ( toks.Arr == nullptr )
return CodeInvalid;
return (CodeClass) parse_class_struct( TokType::Decl_Class, toks, stringize(parse_class) );
}
internal
Code parse_enum( Parser::TokArray& toks, char const* context )
{
using namespace Parser;
using namespace ECode;
SpecifierT specs_found[16] { ESpecifier::Num_Specifiers };
s32 num_specifiers = 0;
Token name = { nullptr, 0, TokType::Invalid };
Code array_expr = { nullptr };
Code type = { nullptr };
Token body = { nullptr, 0, TokType::Invalid };
char entries_code[ kilobytes(128) ] { 0 };
s32 entries_length = 0;
bool is_enum_class = false;
eat( TokType::Decl_Enum );
if ( currtok.Type == TokType::Decl_Class )
{
eat( TokType::Decl_Class);
is_enum_class = true;
}
// TODO : Parse attributes
if ( currtok.Type != TokType::Identifier )
{
log_failure( "gen::parse_enum: expected identifier for enum name" );
return Code::Invalid;
}
name = currtok;
eat( TokType::Identifier );
if ( currtok.Type == TokType::Assign_Classifer )
{
eat( TokType::Assign_Classifer );
type = parse_type( toks, stringize(parse_enum) );
if ( type == Code::Invalid )
return Code::Invalid;
}
if ( currtok.Type == TokType::BraceCurly_Open )
{
eat( TokType::BraceCurly_Open );
body = currtok;
while ( currtok.Type != TokType::BraceCurly_Close )
{
eat( TokType::Identifier);
if ( currtok.Type == TokType::Operator && currtok.Text[0] == '=' )
{
eat( TokType::Operator );
while ( currtok.Type != TokType::Comma && currtok.Type != TokType::BraceCurly_Close )
{
eat( currtok.Type );
}
}
if ( currtok.Type == TokType::Comma )
{
eat( TokType::Comma );
}
}
body.Length = ( (sptr)prevtok.Text + prevtok.Length ) - (sptr)body.Text;
eat( TokType::BraceCurly_Close );
}
eat( TokType::Statement_End );
using namespace ECode;
Code
result = make_code();
if ( body.Length )
{
// mem_copy( entries_code, body.Text, body.Length );
Code untyped_body = untyped_str( body );
result->Type = is_enum_class ? Enum_Class : Enum;
result->add_entry( untyped_body );
}
else
{
result->Type = is_enum_class ? Enum_Class_Fwd : Enum_Fwd;
}
result->Name = get_cached_string( name );
if ( type )
result->add_entry( type );
return result;
}
CodeEnum parse_enum( StrC def )
{
check_parse_args( parse_enum, def );
using namespace Parser;
TokArray toks = lex( def );
if ( toks.Arr == nullptr )
return CodeInvalid;
return (CodeEnum) parse_enum( toks, stringize(parse_enum) );
}
internal inline
Code parse_export_body( Parser::TokArray& toks, char const* context )
{
return parse_global_nspace( ECode::Export_Body, toks, context );
}
CodeExportBody parse_export_body( StrC def )
{
check_parse_args( parse_export_body, def );
using namespace Parser;
TokArray toks = lex( def );
if ( toks.Arr == nullptr )
return CodeInvalid;
return (CodeExportBody) parse_export_body( toks, stringize(parse_export_body) );
}
internal inline
Code parse_extern_link_body( Parser::TokArray& toks, char const* context )
{
return parse_global_nspace( ECode::Extern_Linkage_Body, toks, context );
}
internal
Code parse_extern_link( Parser::TokArray& toks, char const* context )
{
using namespace Parser;
eat( TokType::Decl_Extern_Linkage );
Token name = currtok;
eat( TokType::String );
name.Text += 1;
name.Length -= 1;
Code
result = make_code();
result->Type = ECode::Extern_Linkage;
result->Name = get_cached_string( name );
Code entry = parse_extern_link_body( toks, context );
if ( entry == Code::Invalid )
{
log_failure( "gen::parse_extern_link: failed to parse body" );
return result;
}
result->add_entry( entry );
return result;
}
CodeExtern parse_extern_link( StrC def )
{
check_parse_args( parse_extern_link, def );
using namespace Parser;
TokArray toks = lex( def );
if ( toks.Arr == nullptr )
return CodeInvalid;
return (CodeExtern) parse_extern_link( toks, stringize(parse_extern_link) );
}
internal
Code parse_friend( Parser::TokArray& toks, char const* context )
{
using namespace Parser;
using namespace ECode;
eat( TokType::Decl_Friend );
Code function = { nullptr };
// Type declaration or return type
Code type = parse_type( toks, stringize(parse_friend) );
if ( type == Code::Invalid )
return Code::Invalid;
// Funciton declaration
if ( currtok.Type == TokType::Identifier )
{
// Name
Token name = parse_identifier( toks, stringize(parse_friend) );
// Parameter list
Code params = parse_params( toks, stringize(parse_friend) );
function = make_code();
function->Type = Function_Fwd;
function->Name = get_cached_string( name );
function->add_entry( type );
if ( params )
function->add_entry( params );
}
eat( TokType::Statement_End );
Code
result = make_code();
result->Type = Friend;
if ( function )
result->add_entry( function );
else
result->add_entry( type );
return result;
}
CodeFriend parse_friend( StrC def )
{
check_parse_args( parse_friend, def );
using namespace Parser;
TokArray toks = lex( def );
if ( toks.Arr == nullptr )
return CodeInvalid;
return (CodeFriend) parse_friend( toks, stringize(parse_friend) );
}
internal
Code parse_functon( Parser::TokArray& toks, char const* context )
{
using namespace Parser;
SpecifierT specs_found[16] { ESpecifier::Num_Specifiers };
s32 num_specifiers = 0;
Code attributes = { nullptr };
Code specifiers = { nullptr };
// TODO : Parse module specifiers
// TODO : Parse attributes
while ( left && tok_is_specifier( currtok ) )
{
SpecifierT spec = ESpecifier::to_type( currtok );
switch ( spec )
{
case ESpecifier::Const:
case ESpecifier::Consteval:
case ESpecifier::Constexpr:
case ESpecifier::External_Linkage:
case ESpecifier::Inline:
case ESpecifier::Static_Member:
break;
default:
log_failure( "gen::parse_functon: invalid specifier " "%s" " for functon", ESpecifier::to_str(spec) );
return Code::Invalid;
}
specs_found[num_specifiers] = spec;
num_specifiers++;
eat( currtok.Type );
}
if ( num_specifiers )
{
specifiers = def_specifiers( num_specifiers, specs_found );
}
Code ret_type = parse_type( toks, stringize(parse_function) );
if ( ret_type == Code::Invalid )
return Code::Invalid;
Token name = parse_identifier( toks, stringize(parse_function) );
if ( ! name )
return Code::Invalid;
Code result = parse_function_after_name( ModuleFlag::None, attributes, specifiers, ret_type, name, toks, context );
return result;
}
CodeFn parse_function( StrC def )
{
using namespace Parser;
check_parse_args( parse_function, def );
TokArray toks = lex( def );
if ( toks.Arr == nullptr )
return CodeInvalid;
return (CodeFn) parse_functon( toks, stringize(parse_function) );
}
CodeGlobalBody parse_global_body( StrC def )
{
check_parse_args( parse_global_body, def );
using namespace Parser;
TokArray toks = lex( def );
if ( toks.Arr == nullptr )
return CodeInvalid;
return (CodeGlobalBody) parse_global_nspace( ECode::Global_Body, toks, stringize(parse_global_body) );
}
internal
Code parse_namespace( Parser::TokArray& toks, char const* context )
{
using namespace Parser;
eat( TokType::Decl_Namespace );
Token name = parse_identifier( toks, stringize(parse_namespace) );
Code body = parse_global_nspace( ECode::Namespace_Body, toks, stringize(parse_namespace) );
if ( body == Code::Invalid )
return Code::Invalid;
Code
result = make_code();
result->Type = ECode::Namespace;
result->Name = get_cached_string( name );
result->add_entry( body );
return result;
}
CodeNamespace parse_namespace( StrC def )
{
check_parse_args( parse_namespace, def );
using namespace Parser;
TokArray toks = lex( def );
if ( toks.Arr == nullptr )
return CodeInvalid;
return (CodeNamespace) parse_namespace( toks, stringize(parse_namespace) );
}
internal
Code parse_operator( Parser::TokArray& toks, char const* context )
{
// TODO : Parse Module specifier
// TODO : Parse Attributes
Code attributes = { nullptr };
Code specifiers = { nullptr };
SpecifierT specs_found[16] { ESpecifier::Num_Specifiers };
s32 num_specifiers = 0;
while ( left && tok_is_specifier( currtok ) )
{
SpecifierT spec = ESpecifier::to_type( currtok );
switch ( spec )
{
case ESpecifier::Const:
case ESpecifier::Constexpr:
case ESpecifier::Inline:
case ESpecifier::Static_Member:
break;
default:
log_failure( "gen::parse_operator: invalid specifier " "%s" " for operator", ESpecifier::to_str(spec) );
return Code::Invalid;
}
specs_found[num_specifiers] = spec;
num_specifiers++;
eat( currtok.Type );
}
if ( num_specifiers )
{
specifiers = def_specifiers( num_specifiers, specs_found );
}
// Parse Return Type
Code ret_type = parse_type( toks, stringize(parse_operator) );
Code result = parse_operator_after_ret_type( ModuleFlag::None, attributes, specifiers, ret_type, toks, context );
return result;
}
CodeOperator parse_operator( StrC def )
{
check_parse_args( parse_operator, def );
using namespace Parser;
TokArray toks = lex( def );
if ( toks.Arr == nullptr )
return CodeInvalid;
return (CodeOperator) parse_operator( toks, stringize(parse_operator) );
}
Code parse_operator_cast( Parser::TokArray& toks, char const* context )
{
using namespace Parser;
eat( TokType::Decl_Operator );
Code type = parse_type( toks, stringize(parse_operator_cast) );
eat( TokType::Capture_Start );
eat( TokType::Capture_End );
Code body = { nullptr };
if ( check( TokType::BraceCurly_Open) )
{
eat( TokType::BraceCurly_Open );
Token body_str = currtok;
s32 level = 0;
while ( left && ( currtok.Type != TokType::BraceCurly_Close || level > 0 ) )
{
if ( currtok.Type == TokType::BraceCurly_Open )
level++;
else if ( currtok.Type == TokType::BraceCurly_Close && level > 0 )
level--;
eat( currtok.Type );
}
body_str.Length = ( (sptr)prevtok.Text + prevtok.Length ) - (sptr)body_str.Text;
body = untyped_str( body_str );
eat( TokType::BraceCurly_Close );
}
Code result = make_code();
if (body)
{
result->Type = ECode::Operator_Cast;
result->add_entry( body );
}
else
{
result->Type = ECode::Operator_Cast_Fwd;
}
result->add_entry( type );
return result;
}
CodeOpCast parse_operator_cast( StrC def )
{
check_parse_args( parse_operator_cast, def );
using namespace Parser;
TokArray toks = lex( def );
if ( toks.Arr == nullptr )
return CodeInvalid;
return (CodeOpCast) parse_operator_cast( toks, stringize(parse_operator_cast) );
}
internal inline
Code parse_struct( Parser::TokArray& toks, char const* context )
{
return parse_class_struct( Parser::TokType::Decl_Struct, toks, stringize(parse_struct) );
}
CodeStruct parse_struct( StrC def )
{
check_parse_args( parse_struct, def );
using namespace Parser;
TokArray toks = lex( def );
if ( toks.Arr == nullptr )
return CodeInvalid;
return (CodeStruct) parse_class_struct( TokType::Decl_Struct, toks, stringize(parse_struct) );
}
internal
Code parse_template( Parser::TokArray& toks, char const* context )
{
# define UseTemplateCapture true
using namespace Parser;
// TODO : Parse Module specifier
eat( TokType::Decl_Template );
Code params = parse_params( toks, stringize(parse_template), UseTemplateCapture );
if ( params == Code::Invalid )
return Code::Invalid;
Code definition = { nullptr };
while ( left )
{
if ( check( TokType::Decl_Class ) )
{
definition = parse_class( toks, stringize(parse_template) );
break;
}
if ( check( TokType::Decl_Struct ) )
{
definition = parse_enum( toks, stringize(parse_template) );
break;
}
if ( check( TokType::Decl_Using ))
{
definition = parse_using( toks, stringize(parse_template) );
break;
}
// Its either a function or a variable
Token name = { nullptr, 0, TokType::Invalid };
Code attributes = { nullptr };
Code specifiers = { nullptr };
// TODO : Parse attributes
bool expects_function = false;
SpecifierT specs_found[16] { ESpecifier::Num_Specifiers };
s32 num_specifiers = 0;
while ( left && tok_is_specifier( currtok ) )
{
SpecifierT spec = ESpecifier::to_type( currtok );
switch ( spec )
{
case ESpecifier::Const:
case ESpecifier::Constexpr:
case ESpecifier::Constinit:
case ESpecifier::External_Linkage:
case ESpecifier::Global:
case ESpecifier::Inline:
case ESpecifier::Local_Persist:
case ESpecifier::Mutable:
case ESpecifier::Static_Member:
case ESpecifier::Thread_Local:
case ESpecifier::Volatile:
break;
case ESpecifier::Consteval:
expects_function = true;
break;
default:
log_failure( "gen::parse_template: invalid specifier %s for variable or function", ESpecifier::to_str( spec ) );
return Code::Invalid;
}
// Ignore const it will be handled by the type
if ( spec == ESpecifier::Const )
continue;
specs_found[num_specifiers] = spec;
num_specifiers++;
eat( currtok.Type );
}
if ( num_specifiers )
{
specifiers = def_specifiers( num_specifiers, specs_found );
}
definition = parse_operator_function_or_variable( expects_function, attributes, specifiers, toks, stringize(parse_template) );
break;
}
Code
result = make_code();
result->Type = ECode::Template;
result->add_entry( definition );
result->add_entry( params );
return result;
# undef UseTemplateCapture
}
CodeTemplate parse_template( StrC def )
{
check_parse_args( parse_template, def );
using namespace Parser;
TokArray toks = lex( def );
if ( toks.Arr == nullptr )
return CodeInvalid;
return (CodeTemplate) parse_template( toks, stringize(parse_template) );
}
internal
Code parse_type( Parser::TokArray& toks, char const* context )
{
using namespace Parser;
Token context_tok = prevtok;
SpecifierT specs_found[16] { ESpecifier::Num_Specifiers };
s32 num_specifiers = 0;
Token name = { nullptr, 0, TokType::Invalid };
Token brute_sig = { currtok.Text, 0, TokType::Invalid };
while ( left && tok_is_specifier( currtok ) )
{
SpecifierT spec = ESpecifier::to_type( currtok );
if ( spec != ESpecifier::Const )
{
log_failure( "gen::parse_type: Error, invalid specifier used in type definition: %s", currtok.Text );
return Code::Invalid;
}
specs_found[num_specifiers] = spec;
num_specifiers++;
eat( currtok.Type );
}
if ( left == 0 )
{
log_failure( "%s: Error, unexpected end of type definition", context );
return Code::Invalid;
}
if ( currtok.Type == TokType::Decl_Class
|| currtok.Type == TokType::Decl_Struct )
{
name = currtok;
eat( currtok.Type );
name.Length = ( (sptr)currtok.Text + currtok.Length ) - (sptr)name.Text;
eat( TokType::Identifier );
}
else if ( currtok.Type >= TokType::Type_Unsigned )
{
name = currtok;
eat( currtok.Type );
while (currtok.Type >= TokType::Type_Unsigned)
{
eat( currtok.Type );
}
name.Length = ( (sptr)prevtok.Text + prevtok.Length ) - (sptr)name.Text;
}
else
{
name = parse_identifier( toks, context );
if ( ! name )
return Code::Invalid;
// Problably dealing with a templated symbol
if ( currtok.Type == TokType::Operator && currtok.Text[0] == '<' && currtok.Length == 1 )
{
eat( TokType::Operator );
s32 level = 0;
while ( left && ( currtok.Text[0] != '>' || level > 0 ))
{
if ( currtok.Text[0] == '<' )
level++;
if ( currtok.Text[0] == '>' )
level--;
eat( currtok.Type );
}
eat( TokType::Operator );
// Extend length of name to last token
name.Length = ( (sptr)prevtok.Text + prevtok.Length ) - (sptr)name.Text;
}
}
while ( left && tok_is_specifier( currtok ) )
{
SpecifierT spec = ESpecifier::to_type( currtok );
if ( spec != ESpecifier::Const
&& spec != ESpecifier::Ptr
&& spec != ESpecifier::Ref
&& spec != ESpecifier::RValue )
{
log_failure( "%s: Error, invalid specifier used in type definition: %s", context, currtok.Text );
return Code::Invalid;
}
specs_found[num_specifiers] = spec;
num_specifiers++;
eat( currtok.Type );
}
// Not sure if its technically possible to cast ot a function pointer user defined operator cast...
// Supporting it is not worth the effort.
if ( check( TokType::Capture_Start ) && context_tok.Type != TokType::Decl_Operator )
{
// Its a function type
eat( TokType::Capture_Start );
while ( check( TokType::Star ) || currtok.Type == TokType::Spec_Const )
{
eat( currtok.Type );
}
// if its a using statement there will not be an ID.
if ( check( TokType::Identifier ) )
eat(TokType::Identifier);
eat( TokType::Capture_End );
// Parameters
eat( TokType::Capture_Start );
// TODO : Change this to validate the parameters...
// Bruteforce lex the parameters, no validation.
s32 level = 0;
while ( ! check( TokType::Capture_End ) || level > 0 )
{
if ( check( TokType::Capture_Start ) )
level++;
if ( check( TokType::Capture_End ) )
level--;
eat( currtok.Type );
}
eat(TokType::Capture_End);
brute_sig.Length = ( (sptr)prevtok.Text + prevtok.Length ) - (sptr)brute_sig.Text;
}
using namespace ECode;
Code
result = make_code();
result->Type = Typename;
if ( brute_sig.Length > 0 )
{
// Bruteforce all tokens together.
name = brute_sig;
}
else
{
if (num_specifiers)
{
Code specifiers = def_specifiers( num_specifiers, (SpecifierT*)specs_found );
result->add_entry( specifiers );
}
}
result->Name = get_cached_string( name );
return result;
}
CodeType parse_type( StrC def )
{
check_parse_args( parse_type, def );
using namespace Parser;
TokArray toks = lex( def );
if ( toks.Arr == nullptr )
return CodeInvalid;
Code result = parse_type( toks, stringize(parse_type) );
return (CodeType) result;
}
internal
Code parse_typedef( Parser::TokArray& toks, char const* context )
{
using namespace Parser;
Token name = { nullptr, 0, TokType::Invalid };
Code array_expr = { nullptr };
Code type = { nullptr };
eat( TokType::Decl_Typedef );
type = parse_type( toks, stringize(parse_typedef) );
if ( ! check( TokType::Identifier ) )
{
log_failure( "gen::parse_typedef: Error, expected identifier for typedef" );
return Code::Invalid;
}
name = currtok;
eat( TokType::Identifier );
array_expr = parse_array_decl( toks, stringize(parse_typedef) );
eat( TokType::Statement_End );
using namespace ECode;
Code
result = make_code();
result->Type = Typedef;
result->Name = get_cached_string( name );
result->add_entry( type );
if ( array_expr && array_expr->Type != Invalid )
type->add_entry( array_expr );
return result;
}
CodeTypedef parse_typedef( StrC def )
{
check_parse_args( parse_typedef, def );
using namespace Parser;
TokArray toks = lex( def );
if ( toks.Arr == nullptr )
return CodeInvalid;
return (CodeTypedef) parse_typedef( toks, stringize(parse_typedef) );
}
internal
Code parse_union( Parser::TokArray& toks, char const* context )
{
using namespace Parser;
// TODO : Parse module spec
eat( TokType::Decl_Union );
// TODO : Parse attributes
Code attributes = { nullptr };
StrC name = { 0, nullptr };
if ( check( TokType::Identifier ) )
{
name = currtok;
eat( TokType::Identifier );
}
Code body = { nullptr };
eat( TokType::BraceCurly_Open );
body = make_code();
body->Type = ECode::Union_Body;
while ( ! check( TokType::BraceCurly_Close ) )
{
Code entry = parse_variable( toks, stringize(parse_union) );
if ( entry )
body->add_entry( entry );
}
eat( TokType::BraceCurly_Close );
eat( TokType::Statement_End );
Code
result = make_code();
result->Type = ECode::Union;
if ( name )
result->Name = get_cached_string( name );
if ( body )
result->add_entry( body );
if ( attributes )
result->add_entry( attributes );
return result;
}
CodeUnion parse_union( StrC def )
{
check_parse_args( parse_union, def );
using namespace Parser;
TokArray toks = lex( def );
if ( toks.Arr == nullptr )
return CodeInvalid;
return (CodeUnion) parse_union( toks, stringize(parse_union) );
}
internal
Code parse_using( Parser::TokArray& toks, char const* context )
{
using namespace Parser;
SpecifierT specs_found[16] { ESpecifier::Num_Specifiers };
s32 num_specifiers = 0;
Token name = { nullptr, 0, TokType::Invalid };
Code array_expr = { nullptr };
Code type = { nullptr };
bool is_namespace = false;
// TODO : Parse module specs
eat( TokType::Decl_Using );
if ( currtok.Type == TokType::Decl_Namespace )
{
is_namespace = true;
eat( TokType::Decl_Namespace );
}
name = currtok;
eat( TokType::Identifier );
if ( currtok.IsAssign )
{
// TODO : Parse Attributes (using type-alias)
eat( TokType::Operator );
type = parse_type( toks, stringize(parse_typedef) );
}
array_expr = parse_array_decl( toks, stringize(parse_typedef) );
eat( TokType::Statement_End );
using namespace ECode;
Code
result = make_code();
result->Type = is_namespace ? Using_Namespace : Using;
result->Name = get_cached_string( name );
if ( type.is_valid() )
result->add_entry( type );
if ( array_expr.is_valid() )
type->add_entry( array_expr );
return result;
}
CodeUsing parse_using( StrC def )
{
check_parse_args( parse_using, def );
using namespace Parser;
TokArray toks = lex( def );
if ( toks.Arr == nullptr )
return CodeInvalid;
return (CodeUsing) parse_using( toks, stringize(parse_using) );
}
internal
Code parse_variable( Parser::TokArray& toks, char const* context )
{
using namespace Parser;
Token name = { nullptr, 0, TokType::Invalid };
SpecifierT specs_found[16] { ESpecifier::Num_Specifiers };
s32 num_specifiers = 0;
Code attributes = Code::Invalid;
Code specifiers = Code::Invalid;
// TODO : Parse module specifiers
// TODO : Parse attributes
while ( left && tok_is_specifier( currtok ) )
{
SpecifierT spec = ESpecifier::to_type( currtok );
switch ( spec )
{
case ESpecifier::Const:
case ESpecifier::Constexpr:
case ESpecifier::Constinit:
case ESpecifier::External_Linkage:
case ESpecifier::Global:
case ESpecifier::Inline:
case ESpecifier::Local_Persist:
case ESpecifier::Mutable:
case ESpecifier::Static_Member:
case ESpecifier::Thread_Local:
case ESpecifier::Volatile:
break;
default:
log_failure( "gen::parse_variable: invalid specifier %s for variable", ESpecifier::to_str( spec ) );
return Code::Invalid;
}
// Ignore const specifiers, they're handled by the type
if ( spec == ESpecifier::Const )
continue;
specs_found[num_specifiers] = spec;
num_specifiers++;
eat( currtok.Type );
}
if ( num_specifiers )
{
specifiers = def_specifiers( num_specifiers, specs_found );
}
Code type = parse_type( toks, stringize(parse_variable) );
if ( type == Code::Invalid )
return Code::Invalid;
name = currtok;
eat( TokType::Identifier );
Code result = parse_variable_after_name( ModuleFlag::None, attributes, specifiers, type, name, toks, stringize(parse_variable) );
return result;
}
CodeVar parse_variable( StrC def )
{
check_parse_args( parse_variable, def );
using namespace Parser;
TokArray toks = lex( def );
if ( toks.Arr == nullptr )
return CodeInvalid;
return (CodeVar) parse_variable( toks, stringize(parse_variable) );
}
// Undef helper macros
# undef check_parse_args
# undef curr_tok
# undef eat
# undef left
// End GEN_FEATURE_PARSING
#endif
#pragma endregion Parsing Constructors
#pragma region Untyped Constructors
sw token_fmt_va( char* buf, uw buf_size, s32 num_tokens, va_list va )
{
char const* buf_begin = buf;
sw remaining = buf_size;
HashTable<StrC> tok_map;
{
// TODO : Switch this to use an arena that makes use of the stack (cap the size of the token table to around 4096 bytes)
tok_map = HashTable<StrC>::init( Memory::GlobalAllocator );
s32 left = num_tokens - 1;
while ( left-- )
{
char const* token = va_arg( va, char const* );
StrC value = va_arg( va, StrC );
u32 key = crc32( token, str_len(token) );
tok_map.set( key, value );
}
}
char const* fmt = va_arg( va, char const* );
char current = *fmt;
while ( current )
{
sw len = 0;
while ( current && current != '<' && remaining )
{
* buf = * fmt;
buf++;
fmt++;
remaining--;
current = * fmt;
}
if ( current == '<' )
{
char const* scanner = fmt + 1;
s32 tok_len = 0;
while ( *scanner != '>' )
{
tok_len++;
scanner++;
}
char const* token = fmt + 1;
u32 key = crc32( token, tok_len );
StrC* value = tok_map.get( key );
if ( value )
{
sw left = value->Len;
char const* str = value->Ptr;
while ( left-- )
{
* buf = * str;
buf++;
str++;
remaining--;
}
scanner++;
fmt = scanner;
current = * fmt;
continue;
}
* buf = * fmt;
buf++;
fmt++;
remaining--;
current = * fmt;
}
}
tok_map.clear();
sw result = buf_size - remaining;
return result;
}
Code untyped_str( StrC content )
{
Code
result = make_code();
result->Name = get_cached_string( content );
result->Type = ECode::Untyped;
result->Content = result->Name;
return result;
}
Code untyped_fmt( char const* fmt, ...)
{
local_persist thread_local
char buf[GEN_PRINTF_MAXLEN] = { 0 };
va_list va;
va_start(va, fmt);
sw length = str_fmt_va(buf, GEN_PRINTF_MAXLEN, fmt, va);
va_end(va);
Code
result = make_code();
result->Name = get_cached_string( { str_len(fmt, MaxNameLength), fmt } );
result->Type = ECode::Untyped;
result->Content = get_cached_string( { length, buf } );
return result;
}
Code untyped_token_fmt( s32 num_tokens, ... )
{
local_persist thread_local
char buf[GEN_PRINTF_MAXLEN] = { 0 };
va_list va;
va_start(va, num_tokens);
sw length = token_fmt_va(buf, GEN_PRINTF_MAXLEN, num_tokens, va);
va_end(va);
Code
result = make_code();
result->Name = get_cached_string( { length, buf } );
result->Type = ECode::Untyped;
result->Content = result->Name;
return result;
}
#pragma endregion Untyped Constructors
#pragma endregion Gen Interface
#pragma region Builder
void Builder::print( Code code )
{
Buffer.append_fmt( "%s\n", code->to_string() );
}
void Builder::print_fmt( char const* fmt, ... )
{
sw res;
char buf[ GEN_PRINTF_MAXLEN ] = { 0 };
va_list va;
va_start( va, fmt );
res = str_fmt_va( buf, count_of( buf ) - 1, fmt, va ) - 1;
va_end( va );
Buffer.append( buf, res );
}
bool Builder::open( char const* path )
{
FileError error = file_open_mode( & File, EFileMode_WRITE, path );
if ( error != EFileError_NONE )
{
log_failure( "gen::File::open - Could not open file: %s", path);
return false;
}
Buffer = String::make( Memory::GlobalAllocator, "" );
return true;
}
void Builder::write()
{
bool result = file_write( & File, Buffer, Buffer.length() );
if ( result == false )
log_failure("gen::File::write - Failed to write to file: %s", file_name( & File ) );
file_close( & File );
}
#pragma endregion Builder
#pragma region Editor
#ifdef GEN_FEATURE_EDITOR
#endif
#pragma endregion Editor
#pragma region Scanner
#ifdef GEN_FEATURE_SCANNER
#endif
#pragma endregion Scanner
}
// End: gen_time
#endif
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