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/* stack.h - structed access to object stacks
Copyright (C) 1988 Free Software Foundation, Inc.
Contributed by Michael Tiemann (tiemann@cygnus.com).
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, 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 the Free Software
Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
/* Summary: this file contains additional structures that layer
on top of obstacks for GNU C++. */
/* Stack of data placed on obstacks. */
struct stack_level
{
/* Pointer back to previous such level. */
struct stack_level *prev;
/* Point to obstack we should return to. */
struct obstack *obstack;
/* First place we start putting data. */
tree *first;
/* Number of entries we can have from `first'.
Right now we are dumb: if we overflow, abort. */
int limit;
};
struct stack_level *push_stack_level ();
struct stack_level *pop_stack_level ();
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