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 5This program is free software; you can redistribute it and/or modify it 6under the terms of the GNU General Public License as published by the 7Free Software Foundation; either version 2, or (at your option) any 8later version. 9 10This program is distributed in the hope that it will be useful, 11but WITHOUT ANY WARRANTY; without even the implied warranty of 12MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13GNU General Public License for more details. 14 15You should have received a copy of the GNU General Public License 16along with this program; if not, write to the Free Software 17Foundation, 59 Temple Place - Suite 330, 18Boston, MA 02111-1307, USA. */ 19 20/* Summary: this file contains additional structures that layer 21 on top of obstacks for GNU C++. */ 22 23/* Stack of data placed on obstacks. */ 24 25struct stack_level 26{ 27 /* Pointer back to previous such level. */ 28 struct stack_level *prev; 29 30 /* Point to obstack we should return to. */ 31 struct obstack *obstack; 32 33 /* First place we start putting data. */ 34 tree *first; 35 36 /* Number of entries we can have from `first'. 37 Right now we are dumb: if we overflow, abort. */ 38 int limit; 39}; 40 41struct stack_level *push_stack_level PROTO((struct obstack *, char *, int)); 42struct stack_level *pop_stack_level PROTO((struct stack_level *)); 43