mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2025-02-24 20:51:35 +00:00
155a8cbcda
Especially binary expressions. That expressions can now be reused is what caused the need to make expression lists non-invasive: the reuse resulted in loops in the lists. This doesn't directly affect code generation at this stage but it will help with optimizing algebraic expressions. The dags are per sequence point (as per my reading of the C spec).
79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
/*
|
|
qc-parse.y
|
|
|
|
parser for quakec
|
|
|
|
Copyright (C) 2012 Bill Currie <bill@taniwha.org>
|
|
|
|
Author: Bill Currie <bill@taniwha.org>
|
|
Date: 2012/10/26
|
|
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License
|
|
as published by the Free Software Foundation; either version 2
|
|
of the License, or (at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
|
|
See the GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to:
|
|
|
|
Free Software Foundation, Inc.
|
|
59 Temple Place - Suite 330
|
|
Boston, MA 02111-1307, USA
|
|
|
|
*/
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
#include "tools/qfcc/include/class.h"
|
|
#include "tools/qfcc/include/diagnostic.h"
|
|
#include "tools/qfcc/include/expr.h"
|
|
#include "tools/qfcc/include/function.h"
|
|
#include "tools/qfcc/include/options.h"
|
|
#include "tools/qfcc/include/shared.h"
|
|
#include "tools/qfcc/include/symtab.h"
|
|
#include "tools/qfcc/include/type.h"
|
|
|
|
function_t *current_func;
|
|
class_type_t *current_class;
|
|
expr_t *local_expr;
|
|
vis_t current_visibility;
|
|
storage_class_t current_storage = sc_global;
|
|
symtab_t *current_symtab;
|
|
bool no_flush_dag;
|
|
|
|
/* When defining a new symbol, already existing symbols must be in a
|
|
different scope. However, when they are in a different scope, we want a
|
|
truly new symbol.
|
|
*/
|
|
symbol_t *
|
|
check_redefined (symbol_t *sym)
|
|
{
|
|
if (sym->table == current_symtab)
|
|
error (0, "%s redefined", sym->name);
|
|
if (sym->table) // truly new symbols are not in any symbol table
|
|
sym = new_symbol (sym->name);
|
|
return sym;
|
|
}
|
|
|
|
/* Check for undefined symbols. If the symbol is undefined, default its type
|
|
to float or int, depending on compiler mode.
|
|
*/
|
|
symbol_t *
|
|
check_undefined (symbol_t *sym)
|
|
{
|
|
if (!sym->table) { // truly new symbols are not in any symbol table
|
|
error (0, "%s undefined", sym->name);
|
|
if (options.code.progsversion == PROG_ID_VERSION)
|
|
sym->type = &type_float;
|
|
else
|
|
sym->type = &type_int;
|
|
}
|
|
return sym;
|
|
}
|