smatch_expression_stacks.c

   1 /*
   2  * sparse/smatch_expression_stacks.c
   3  *
   4  * Copyright (C) 2009 Dan Carpenter.
   5  *
   6  * Licensed under the Open Software License version 1.1
   7  *
   8  */
   9
  10 #include "smatch.h"
  11 #include "smatch_expression_stacks.h"
  12
  13 void push_expression(struct expression_list **estack, struct expression *expr)
  14 {
  15         add_ptr_list(estack, expr);
  16 }
  17
  18 struct expression *pop_expression(struct expression_list **estack)
  19 {
  20         struct expression *expr;
  21
  22         expr = last_ptr_list((struct ptr_list *)*estack);
  23         delete_ptr_list_last((struct ptr_list **)estack);
  24         return expr;
  25 }
  26
  27 struct expression *top_expression(struct expression_list *estack)
  28 {
  29         struct expression *expr;
  30
  31         expr = last_ptr_list((struct ptr_list *)estack);
  32         return expr;
  33 }
  34
  35 void free_expression_stack(struct expression_list **estack)
  36 {
  37         __free_ptr_list((struct ptr_list **)estack);
  38 }