smatch_expression_stacks.c

   1 /*
   2  * Copyright (C) 2009 Dan Carpenter.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, see http://www.gnu.org/copyleft/gpl.txt
  16  */
  17
  18 #include "smatch.h"
  19 #include "smatch_expression_stacks.h"
  20
  21 void push_expression(struct expression_list **estack, struct expression *expr)
  22 {
  23         add_ptr_list(estack, expr);
  24 }
  25
  26 struct expression *pop_expression(struct expression_list **estack)
  27 {
  28         struct expression *expr;
  29
  30         expr = last_ptr_list((struct ptr_list *)*estack);
  31         delete_ptr_list_last((struct ptr_list **)estack);
  32         return expr;
  33 }
  34
  35 struct expression *top_expression(struct expression_list *estack)
  36 {
  37         struct expression *expr;
  38
  39         expr = last_ptr_list((struct ptr_list *)estack);
  40         return expr;
  41 }
  42
  43 void free_expression_stack(struct expression_list **estack)
  44 {
  45         __free_ptr_list((struct ptr_list **)estack);
  46 }