32 lines
1.2 KiB
C
32 lines
1.2 KiB
C
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/*
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* stack.h -- Definitions for stack functions for use by extensions.
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*/
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/*
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* Copyright (C) 2012, 2013 the Free Software Foundation, Inc.
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*
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* This file is part of GAWK, the GNU implementation of the
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* AWK Programming Language.
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*
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* GAWK is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* GAWK is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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extern int stack_empty(); /* return true if stack is empty */
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extern void *stack_top(); /* return top object on the stack */
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extern void *stack_pop(); /* pop top object and return it */
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extern int stack_push(void *); /* push an object onto the stack,
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* return 0 if failed, 1 if success
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*/
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