diff options
Diffstat (limited to 'extension/stack.h')
| -rw-r--r-- | extension/stack.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/extension/stack.h b/extension/stack.h new file mode 100644 index 00000000..8fc06e78 --- /dev/null +++ b/extension/stack.h @@ -0,0 +1,31 @@ +/* + * stack.h -- Definitions for stack functions for use by extensions. + */ + +/* + * Copyright (C) 2012 the Free Software Foundation, Inc. + * + * This file is part of GAWK, the GNU implementation of the + * AWK Programming Language. + * + * GAWK 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 3 of the License, or + * (at your option) any later version. + * + * GAWK 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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +extern int stack_empty(); /* return true if stack is empty */ +extern void *stack_top(); /* return top object on the stack */ +extern void *stack_pop(); /* pop top object and return it */ +extern int stack_push(void *); /* push an object onto the stack, + * return 0 if failed, 1 if success + */ |