gencpp/test/upfront/Buffer.Upfront.hpp

276 lines
6.4 KiB
C++

#pragma once
#if GEN_TIME
#include "gen.hpp"
using namespace gen;
Code gen__buffer_base()
{
CodeType t_allocator_info = def_type( name(AllocatorInfo) );
Code header = def_struct( name(BufferHeader),
def_struct_body( args(
def_variable( t_allocator_info, name(Backing) )
, def_variable( t_uw, name(Capacity) )
, def_variable( t_uw, name(Num) )
)));
return def_global_body( 1, header );
}
Code gen__buffer( StrC type, sw type_size )
{
static CodeType t_allocator_info = def_type( name(AllocatorInfo));
static CodeUsing using_header = def_using( name(Header), def_type( name(BufferHeader) ) );
StrC name;
{
char const* name_str = str_fmt_buf( "Buffer_%s\0", type.Ptr );
s32 name_len = str_len( name_str );
name = { name_len, name_str };
};
CodeType t_buffer_type = def_type( name );
CodeType t_type = def_type( type );
CodeType t_type_ptr = def_type( type, __, spec_ptr );
CodeType t_type_ref = def_type( type, __, spec_ref );
CodeType t_header = def_type( name(Header) );
CodeType t_header_ptr = def_type( name(Header), __, spec_ptr );
CodeType t_header_ref = def_type( name(Header), __, spec_ref );
CodeStruct buffer = {0};
{
CodeUsing using_type = def_using( name(Type), t_type );
CodeVar data = def_variable( t_type_ptr, name(Data) );
CodeFn init;
{
CodeParam params = def_params( args(
def_param( t_allocator_info, name(allocator))
, def_param( t_sw, name(capacity))
));
Code body = def_execution( code(
Header* header = rcast( Header*, alloc( allocator, sizeof(Header) + capacity * sizeof(Type) ) );
if ( header == nullptr )
return { nullptr };
header->Backing = allocator;
header->Capacity = capacity;
header->Num = 0;
return { rcast( Type*, header + 1) };
));
init = def_function( name(init), params, t_buffer_type, body, spec_static_member );
}
CodeFn init_copy;
{
CodeParam params = def_params( args(
def_param( t_allocator_info, name(allocator))
, def_param( t_buffer_type, name(other))
));
init_copy = def_function( name(init), params, t_buffer_type
, def_execution( code(
Header& other_header = other.get_header();
Header* header = rcast( Header*, alloc( allocator, sizeof(Header) + other_header.Capacity * sizeof(Type) ) );
if ( header == nullptr )
return { nullptr };
header->Backing = allocator;
header->Capacity = other_header.Capacity;
header->Num = other_header.Num;
mem_copy( header + 1, other.Data, other_header.Num * sizeof(Type) );
return { rcast( Type*, header + 1) };
))
);
}
CodeFn append = def_function( name(append), def_param( t_type, name(value)), t_void
, def_execution( code(
Header& header = get_header();
Data[ header.Num ] = value;
header.Num++;
))
);
CodeFn appendv;
{
CodeParam params = def_params( args(
def_param( t_type_ptr, name( values))
, def_param( t_sw, name( num))
));
appendv = def_function( name(append), params, t_void
, def_execution( code(
Header& header = get_header();
GEN_ASSERT( header.Num + num <= header.Capacity);
mem_copy( Data + header.Num, values, num * sizeof( Type ) );
header.Num += num;
))
);
}
CodeFn clear = def_function( name(clear), __, t_void
, def_execution( code(
Header& header = get_header();
header.Num = 0;
))
);
CodeFn end = def_function( name(end), __, t_type_ref
, def_execution( code(
Header& header = get_header();
return Data[ header.Num - 1 ];
))
);
CodeFn free = def_function( name(free), __, t_void
, def_execution( code(
Header& header = get_header();
gen::free( header.Backing, & header );
))
);
CodeFn get_header = def_function( name(get_header), __, t_header_ref
, def_execution( code(
return * ( rcast( Header*, Data ) - 1 );
))
);
CodeFn num = def_function( name(num), __, t_sw
, def_execution( code(
return get_header().Num;
))
);
CodeFn pop = def_function( name(pop), __, t_type
, def_execution( code(
Header& header = get_header();
header.Num--;
return Data[ header.Num ];
))
);
CodeFn wipe = def_function( name(wipe), __, t_void
, def_execution( code(
Header& header = get_header();
header.Num = 0;
mem_set( Data, 0, header.Capacity * sizeof( Type ) );
))
);
CodeOpCast op_type_ptr = def_operator_cast( t_type_ptr, def_execution( code(
return Data;
)));
buffer = def_struct( name, def_struct_body( args(
using_header
, using_type
, init
, init_copy
, append
, appendv
, clear
, end
, free
, get_header
, num
, pop
, wipe
, op_type_ptr
, data
)));
}
return buffer;
}
struct GenBufferRequest
{
StrC Dependency;
StrC Type;
sw TypeSize;
};
Array<GenBufferRequest> GenBufferRequests;
void gen__buffer_request( StrC type, StrC dep = {} )
{
do_once_start
GenBufferRequests = Array<GenBufferRequest>::init( GlobalAllocator );
do_once_end
// Make sure we don't already have a request for the type.
for ( sw idx = 0; idx < GenBufferRequests.num(); ++idx )
{
StrC const reqest_type = GenBufferRequests[ idx ].Type;
if ( reqest_type.Len != type.Len )
continue;
if ( str_compare( reqest_type.Ptr, type.Ptr, reqest_type.Len ) == 0 )
return;
}
GenBufferRequest request = { dep, type};
GenBufferRequests.append( request );
}
#define gen_buffer( type ) gen__buffer_request( code(type))
u32 gen_buffer_file()
{
Builder
gen_buffer_file;
gen_buffer_file.open( "buffer.Upfront.gen.hpp" );
gen_buffer_file.print( def_include( txt_StrC("gen.hpp")) );
gen_buffer_file.print( def_using_namespace( name(gen)) );
gen_buffer_file.print( gen__buffer_base() );
GenBufferRequest* current = GenBufferRequests;
s32 left = GenBufferRequests.num();
while (left--)
{
GenBufferRequest const& request = * current;
Code generated_buffer = gen__buffer( current->Type, current->TypeSize );
if ( request.Dependency )
{
char const* cmt_str = str_fmt_buf( "// Dependency for %s type", request.Type );
s32 cmt_len = str_len( cmt_str );
Code cmt = def_comment( { cmt_len, cmt_str } );
Code include = def_include( request.Dependency );
gen_buffer_file.print( cmt );
gen_buffer_file.print( include );
}
gen_buffer_file.print( generated_buffer );
current++;
}
gen_buffer_file.write();
return 0;
}
#endif // GEN_TIME