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First compiling version of operator overloading for C! (on both msvc and clang using -std=c11 flag, using _Generic selection with some helper macros)

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Extremely satsified with how unofuscated the generated code is for _Generic.
Still fixing up the templated container code though in the c-codegen
This commit is contained in:
Edward R. Gonzalez
2024-12-05 17:04:17 -05:00
parent 47b9c37e94
commit a3407c14d5
15 changed files with 424 additions and 263 deletions
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201
gen_c_library/components/containers.array.hpp
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@@ -4,6 +4,9 @@
using namespace gen;
// Used to know what slot the array will be for generic selection
global s32 ArrayDefinitionCounter = 0;
CodeBody gen_array_base()
{
CodeTypedef td_header = parse_typedef( code( typedef struct ArrayHeader ArrayHeader; ));
@@ -16,30 +19,35 @@ CodeBody gen_array_base()
};
));
// Code grow_formula = untyped_str( txt( "#define gen_array_grow_formula( value ) ( 2 * value + 8 )\n" ));
Code get_header = untyped_str( txt( "#define array_get_header( Type, self ) ( (ArrayHeader*)( self ) - 1)\n" ));
Code grow_formula = untyped_str( txt( "#define array_grow_formula( value ) ( 2 * value + 8 )\n" ));
Code get_header = untyped_str( txt( "#define array_get_header( self ) ( (ArrayHeader*)( self ) - 1)\n" ));
return def_global_body( args( fmt_newline, td_header, header, get_header, fmt_newline ) );
return def_global_body( args( fmt_newline, td_header, header, grow_formula, get_header, fmt_newline ) );
};
CodeBody gen_array( StrC type, StrC array_name )
{
String array_type = String::fmt_buf( GlobalAllocator, "%.*s", array_name.Len, array_name.Ptr );
String fn = String::fmt_buf( GlobalAllocator, "%.*s", array_name.Len, array_name.Ptr );
str_to_lower(fn.Data);
// str_to_lower(fn.Data);
#pragma push_macro( "GEN_ASSERT" )
#pragma push_macro( "rcast" )
#pragma push_macro( "cast" )
#undef GEN_ASSERT
#undef rcast
#undef cast
CodeBody result = parse_global_body( token_fmt( "array_type", (StrC)array_type, "fn", (StrC)fn, "type", (StrC)type
, stringize(
typedef <type>* <array_type>;
<array_type> <fn>_init ( AllocatorInfo allocator );
<array_type> <fn>_init_reserve ( AllocatorInfo allocator, usize capacity );
bool <fn>_append ( <array_type>* self, <type> value );
bool <fn>_append_items ( <array_type>* self, <type>* items, usize item_num );
bool <fn>_append_at ( <array_type>* self, <type> item, usize idx );
bool <fn>_append_items_at( <array_type>* self, <type>* items, usize item_num, usize idx );
void <fn>_init ( <array_type>* self, AllocatorInfo allocator );
void <fn>_init_reserve ( <array_type>* self, AllocatorInfo allocator, usize capacity );
bool <fn>_append_array ( <array_type>* self, <array_type> other );
bool <fn>_append ( <array_type>* self, <type> value );
bool <fn>_append_items ( <array_type>* self, <type>* items, usize item_num );
bool <fn>_append_at ( <array_type>* self, <type> item, usize idx );
bool <fn>_append_items_at( <array_type>* self, <type>* items, usize item_num, usize idx );
<type>* <fn>_back ( <array_type> self );
void <fn>_clear ( <array_type> self );
bool <fn>_fill ( <array_type> self, usize begin, usize end, <type> value );
@@ -51,35 +59,41 @@ CodeBody gen_array( StrC type, StrC array_name )
bool <fn>_resize ( <array_type>* self, usize num );
bool <fn>_set_capacity ( <array_type>* self, usize new_capacity );
<array_type> <fn>_init( AllocatorInfo allocator )
void <fn>_init( <array_type>* self, AllocatorInfo allocator )
{
return <fn>_init_reserve( allocator, array_grow_formula( 0 ) );
size_t initial_size = array_grow_formula(0);
array_init_reserve( * self, allocator, initial_size );
}
<array_type> <fn>_init_reserve( AllocatorInfo allocator, usize capacity )
void <fn>_init_reserve( <array_type>* self, AllocatorInfo allocator, usize capacity )
{
ArrayHeader* header = cast(ArrayHeader*, alloc( allocator, sizeof(ArrayHeader) + sizeof(<type>) * capacity ) );
ArrayHeader* header = rcast(ArrayHeader*, alloc(allocator, sizeof(ArrayHeader) + sizeof(<type>) * capacity));
if ( header == NULL )
return NULL;
if (header == nullptr)
self = nullptr;
header->Allocator = allocator;
header->Capacity = capacity;
header->Num = 0;
return cast( <type>*, header + 1 );
self = rcast(<array_type>*, header + 1);
}
bool <fn>_append_array( <array_type>* self, <array_type> other )
{
return array_append_items( * self, (<array_type>)other, <fn>_num(other));
}
bool <fn>_append( <array_type>* self, <type> value )
{
ArrayHeader* header = get_header( * self );
ArrayHeader* header = array_get_header( * self );
if ( header->Num == header->Capacity )
{
if ( ! <fn>_grow( self, header->Capacity))
if ( ! array_grow( self, header->Capacity))
return false;
header = get_header( * self );
header = array_get_header( * self );
}
(* self)[ header->Num ] = value;
@@ -90,14 +104,14 @@ CodeBody gen_array( StrC type, StrC array_name )
bool <fn>_append_items( <array_type>* self, <type>* items, usize item_num )
{
ArrayHeader* header = get_header( * self );
ArrayHeader* header = array_get_header( * self );
if ( header->Num + item_num > header->Capacity )
{
if ( ! <fn>_grow( self, header->Capacity + item_num ))
if ( ! array_grow( self, header->Capacity + item_num ))
return false;
header = get_header( * self );
header = array_get_header( * self );
}
mem_copy( (* self) + header->Num, items, sizeof(<type>) * item_num );
@@ -108,7 +122,7 @@ CodeBody gen_array( StrC type, StrC array_name )
bool <fn>_append_at( <array_type>* self, <type> item, usize idx )
{
ArrayHeader* header = get_header( * self );
ArrayHeader* header = array_get_header( * self );
if ( idx >= header->Num )
idx = header->Num - 1;
@@ -118,10 +132,10 @@ CodeBody gen_array( StrC type, StrC array_name )
if ( header->Capacity < header->Num + 1 )
{
if ( ! <fn>_grow( self, header->Capacity + 1 ) )
if ( ! array_grow( self, header->Capacity + 1 ) )
return false;
header = get_header( * self );
header = array_get_header( * self );
}
<array_type> target = (* self) + idx;
@@ -134,19 +148,19 @@ CodeBody gen_array( StrC type, StrC array_name )
bool <fn>_append_items_at( <array_type>* self, <type>* items, usize item_num, usize idx )
{
ArrayHeader* header = get_header( * self );
ArrayHeader* header = array_get_header( * self );
if ( idx >= header->Num )
{
return <fn>_append_items( self, items, item_num );
return array_append_items( * self, items, item_num );
}
if ( item_num > header->Capacity )
{
if ( ! <fn>_grow( self, item_num + header->Capacity ) )
if ( ! array_grow( self, item_num + header->Capacity ) )
return false;
header = get_header( * self );
header = array_get_header( * self );
}
<type>* target = (* self) + idx + item_num;
@@ -161,7 +175,7 @@ CodeBody gen_array( StrC type, StrC array_name )
<type>* <fn>_back( <array_type> self )
{
ArrayHeader* header = get_header( self );
ArrayHeader* header = array_get_header( self );
if ( header->Num == 0 )
return NULL;
@@ -171,13 +185,13 @@ CodeBody gen_array( StrC type, StrC array_name )
void <fn>_clear( <array_type> self )
{
ArrayHeader* header = get_header( self );
ArrayHeader* header = array_get_header( self );
header->Num = 0;
}
bool <fn>_fill( <array_type> self, usize begin, usize end, <type> value )
{
ArrayHeader* header = get_header( self );
ArrayHeader* header = array_get_header( self );
if ( begin < 0 || end >= header->Num )
return false;
@@ -190,30 +204,30 @@ CodeBody gen_array( StrC type, StrC array_name )
void <fn>_free( <array_type> self )
{
ArrayHeader* header = get_header( self );
free( header->Allocator, header );
ArrayHeader* header = array_get_header( self );
allocator_free( header->Allocator, header );
self = NULL;
}
bool <fn>_grow( <array_type>* self, usize min_capacity )
{
ArrayHeader* header = get_header( *self );
ArrayHeader* header = array_get_header( *self );
usize new_capacity = array_grow_formula( header->Capacity );
if ( new_capacity < min_capacity )
new_capacity = min_capacity;
return <fn>_set_capacity( self, new_capacity );
return array_set_capacity( * self, new_capacity );
}
usize <fn>_num( <array_type> self )
{
return get_header(self)->Num;
return array_get_header(self)->Num;
}
<type> <fn>_pop( <array_type> self )
{
ArrayHeader* header = get_header( self );
ArrayHeader* header = array_get_header( self );
GEN_ASSERT( header->Num > 0 );
<type> result = self[ header->Num - 1 ];
@@ -223,7 +237,7 @@ CodeBody gen_array( StrC type, StrC array_name )
void <fn>_remove_at( <array_type> self, usize idx )
{
ArrayHeader* header = get_header( self );
ArrayHeader* header = array_get_header( self );
GEN_ASSERT( idx < header->Num );
mem_move( self + idx, self + idx + 1, sizeof( <type> ) * ( header->Num - idx - 1 ) );
@@ -232,24 +246,24 @@ CodeBody gen_array( StrC type, StrC array_name )
bool <fn>_reserve( <array_type>* self, usize new_capacity )
{
ArrayHeader* header = get_header( * self );
ArrayHeader* header = array_get_header( * self );
if ( header->Capacity < new_capacity )
return <fn>_set_capacity( self, new_capacity );
return array_set_capacity( * self, new_capacity );
return true;
}
bool <fn>_resize( <array_type>* self, usize num )
{
ArrayHeader* header = get_header( * self );
ArrayHeader* header = array_get_header( * self );
if ( header->Capacity < num )
{
if ( ! <fn>_grow( self, num ) )
if ( ! array_grow( self, num ) )
return false;
header = get_header( * self );
header = array_get_header( * self );
}
header->Num = num;
@@ -258,7 +272,7 @@ CodeBody gen_array( StrC type, StrC array_name )
bool <fn>_set_capacity( <array_type>* self, usize new_capacity )
{
ArrayHeader* header = get_header( * self );
ArrayHeader* header = array_get_header( * self );
if ( new_capacity == header->Capacity )
return true;
@@ -266,14 +280,14 @@ CodeBody gen_array( StrC type, StrC array_name )
if ( new_capacity < header->Num )
header->Num = new_capacity;
usize size = sizeof( ArrayHeader ) + sizeof( <type> ) * new_capacity;
usize size = sizeof( ArrayHeader ) + sizeof( <type> ) * new_capacity;
ArrayHeader* new_header = cast( ArrayHeader*, alloc( header->Allocator, size ));
if ( new_header == NULL )
return false;
mem_move( new_header, header, sizeof( ArrayHeader ) + sizeof( <type> ) * header->Num );
free( header->Allocator, & header );
allocator_free( header->Allocator, & header );
new_header->Capacity = new_capacity;
* self = cast( <type>*, new_header + 1 );
@@ -281,10 +295,36 @@ CodeBody gen_array( StrC type, StrC array_name )
}
)));
#pragma pop_macro( "GEN_ASSERT" )
#pragma pop_macro( "rcast" )
#pragma pop_macro( "cast" )
++ ArrayDefinitionCounter;
StrC slot_str = String::fmt_buf(GlobalAllocator, "%d", ArrayDefinitionCounter).to_strc();
Code generic_interface_slot = untyped_str(token_fmt( "type_delimiter", (StrC)array_type, "slot", (StrC)slot_str,
R"(#define GENERIC_SLOT_<slot>__array_init <type_delimiter>, <type_delimiter>_init
#define GENERIC_SLOT_<slot>__array_init_reserve <type_delimiter>, <type_delimiter>_init_reserve
#define GENERIC_SLOT_<slot>__array_append <type_delimiter>, <type_delimiter>_append
#define GENERIC_SLOT_<slot>__array_append_items <type_delimiter>, <type_delimiter>_append_items
#define GENERIC_SLOT_<slot>__array_append_at <type_delimiter>, <type_delimiter>_append_at
#define GENERIC_SLOT_<slot>__array_append_items_at <type_delimiter>, <type_delimiter>_append_items_at
#define GENERIC_SLOT_<slot>__array_back <type_delimiter>, <type_delimiter>_back
#define GENERIC_SLOT_<slot>__array_clear <type_delimiter>, <type_delimiter>_clear
#define GENERIC_SLOT_<slot>__array_fill <type_delimiter>, <type_delimiter>_fill
#define GENERIC_SLOT_<slot>__array_grow <type_delimiter>*, <type_delimiter>_grow
#define GENERIC_SLOT_<slot>__array_num <type_delimiter>, <type_delimiter>_num
#define GENERIC_SLOT_<slot>__array_pop <type_delimiter>, <type_delimiter>_pop
#define GENERIC_SLOT_<slot>__array_reserve <type_delimiter>, <type_delimiter>_reserve
#define GENERIC_SLOT_<slot>__array_resize <type_delimiter>, <type_delimiter>_resize
#define GENERIC_SLOT_<slot>__array_set_capacity <type_delimiter>, <type_delimiter>_set_capacity
)"
));
return def_global_body( args(
def_pragma( string_to_strc( string_fmt_buf( GlobalAllocator, "region %S", array_type ))),
fmt_newline,
generic_interface_slot,
fmt_newline,
result,
fmt_newline,
def_pragma( string_to_strc(string_fmt_buf( GlobalAllocator, "endregion %S", array_type ))),
@@ -292,4 +332,67 @@ CodeBody gen_array( StrC type, StrC array_name )
));
};
// CodeBody gen_
constexpr bool array_by_ref = true;
Code gen_array_generic_selection_function_macro( StrC macro_name, bool by_ref = false )
{
local_persist
String define_builder = String::make_reserve(GlobalAllocator, kilobytes(64));
define_builder.clear();
StrC macro_begin = token_fmt( "macro_name", (StrC)macro_name,
R"(#define <macro_name>(selector_arg, ...) _Generic( \
(selector_arg), /* Select Via Expression*/ \
/* Extendibility slots: */ \
)"
);
define_builder.append(macro_begin);
for ( s32 slot = 1; slot <= ArrayDefinitionCounter; ++ slot )
{
StrC slot_str = String::fmt_buf(GlobalAllocator, "%d", slot).to_strc();
if (slot == ArrayDefinitionCounter)
{
define_builder.append( token_fmt( "macro_name", macro_name, "slot", slot_str,
R"( GEN_IF_MACRO_DEFINED_INCLUDE_THIS_SLOT_LAST( GENERIC_SLOT_<slot>__<macro_name> ) \
)"
));
continue;
}
define_builder.append( token_fmt( "macro_name", macro_name, "slot", slot_str,
R"( GEN_IF_MACRO_DEFINED_INCLUDE_THIS_SLOT( GENERIC_SLOT_<slot>__<macro_name> ) \
)"
));
}
if (by_ref)
define_builder.append(txt(")\tGEN_RESOLVED_FUNCTION_CALL( & selector_arg, __VA_ARGS__ )"));
else
define_builder.append(txt(")\tGEN_RESOLVED_FUNCTION_CALL( selector_arg, __VA_ARGS__ )"));
// Add gap for next definition
define_builder.append(txt("\n\n"));
Code macro = untyped_str(define_builder.to_strc());
return macro;
}
CodeBody gen_array_generic_selection_interface()
{
CodeBody interface_defines = def_body(CT_Global_Body);
interface_defines.append( gen_array_generic_selection_function_macro(txt("array_init"), array_by_ref) );
interface_defines.append( gen_array_generic_selection_function_macro(txt("array_init_reserve"), array_by_ref) );
interface_defines.append( gen_array_generic_selection_function_macro(txt("array_append"), array_by_ref) );
interface_defines.append( gen_array_generic_selection_function_macro(txt("array_append_items"), array_by_ref) );
interface_defines.append( gen_array_generic_selection_function_macro(txt("array_back")) );
interface_defines.append( gen_array_generic_selection_function_macro(txt("array_clear")) );
interface_defines.append( gen_array_generic_selection_function_macro(txt("array_fill")) );
interface_defines.append( gen_array_generic_selection_function_macro(txt("array_free")) );
interface_defines.append( gen_array_generic_selection_function_macro(txt("array_grow")) );
interface_defines.append( gen_array_generic_selection_function_macro(txt("array_num")) );
interface_defines.append( gen_array_generic_selection_function_macro(txt("arary_pop")) );
interface_defines.append( gen_array_generic_selection_function_macro(txt("arary_remove_at")) );
interface_defines.append( gen_array_generic_selection_function_macro(txt("arary_reserve"), array_by_ref) );
interface_defines.append( gen_array_generic_selection_function_macro(txt("array_set_capacity"), array_by_ref) );
return interface_defines;
}