gcc/stack.h

   1 /* stack.h - structed access to object stacks
   2    Copyright (C) 1988 Free Software Foundation, Inc.
   3    Contributed by Michael Tiemann (tiemann@cygnus.com).
   4
   5 This program is free software; you can redistribute it and/or modify it
   6 under the terms of the GNU General Public License as published by the
   7 Free Software Foundation; either version 2, or (at your option) any
   8 later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  18
  19 /* Summary: this file contains additional structures that layer
  20    on top of obstacks for GNU C++.  */
  21
  22 /* Stack of data placed on obstacks.  */
  23
  24 struct stack_level
  25 {
  26   /* Pointer back to previous such level.  */
  27   struct stack_level *prev;
  28
  29   /* Point to obstack we should return to.  */
  30   struct obstack *obstack;
  31
  32   /* First place we start putting data.  */
  33   tree *first;
  34
  35   /* Number of entries we can have from `first'.
  36      Right now we are dumb: if we overflow, abort.  */
  37   int limit;
  38 };
  39
  40 struct stack_level *push_stack_level ();
  41 struct stack_level *pop_stack_level ();