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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 (); |