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/*
* Copyright (c) 2014 Dave Vasilevsky <dave@vasilevsky.ca>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef SQFS_STACK_H
#define SQFS_STACK_H
#include "common.h"
typedef void (*sqfs_stack_free_t)(void *v);
typedef struct {
size_t value_size;
size_t size;
size_t capacity;
char *items;
sqfs_stack_free_t freer;
} sqfs_stack;
/* Ensures the struct is in a safe state */
void sqfs_stack_init(sqfs_stack *s);
sqfs_err sqfs_stack_create(sqfs_stack *s, size_t vsize, size_t initial,
sqfs_stack_free_t freer);
void sqfs_stack_destroy(sqfs_stack *s);
sqfs_err sqfs_stack_push(sqfs_stack *s, void *vout);
bool sqfs_stack_pop(sqfs_stack *s);
size_t sqfs_stack_size(sqfs_stack *s);
sqfs_err sqfs_stack_at(sqfs_stack *s, size_t i, void *vout);
sqfs_err sqfs_stack_top(sqfs_stack *s, void *vout);
#endif
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