/*
 *
 * Copyright (c) 1994
 * Hewlett-Packard Company
 *
 * Permission to use, copy, modify, distribute and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation.  Hewlett-Packard Company makes no
 * representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 *
 *
 * Copyright (c) 1996
 * Silicon Graphics Computer Systems, Inc.
 *
 * Permission to use, copy, modify, distribute and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation.  Silicon Graphics makes no
 * representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 */

/*
Copyright (c) 2007 Wenbo Lao(Rob Lao)

This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.

Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:

    1. The origin of this software must not be misrepresented; you must not
    claim that you wrote the original software. If you use this software
    in a product, an acknowledgment in the product documentation would be
    appreciated but is not required.

    2. Altered source versions must be plainly marked as such, and must not be
    misrepresented as being the original software.

    3. This notice may not be removed or altered from any source
    distribution.

	Wenbo Lao(Rob Lao) 
	viewpl(at)gmail.com
 */

#include "c_stack.h"
#include "c_vector.h"
#include "c_memory.h"


void __c_stack(c_pstack thiz, COMPARER pcmp)
{
	thiz->_l = __c_malloc(sizeof(c_vector));
	__c_vector((c_pvector)thiz->_l, pcmp);
}

void __c_kcats(c_pstack thiz)
{
	__c_rotcev((c_pvector)thiz->_l);
	__c_free((c_pvector)thiz->_l);
}

c_pstack c_stack_assign(c_pstack thiz, const c_pstack S)
{
	c_vector_assign((c_pvector)thiz->_l, (c_pvector)S->_l);
	return thiz;
}

c_bool c_stack_empty(c_pstack thiz)
{
	return c_vector_empty((c_pvector)thiz->_l);
}

size_type c_stack_size(c_pstack thiz)
{
	return c_vector_size((c_pvector)thiz->_l);
}

value_type c_stack_top(c_pstack thiz)
{
	return c_vector_back((c_pvector)thiz->_l);
}

void c_stack_push(c_pstack thiz, const value_type val)
{
	c_vector_push_back((c_pvector)thiz->_l, val);
}

void c_stack_pop(c_pstack thiz)
{
	c_vector_pop_back((c_pvector)thiz->_l);		
}

c_bool c_stack_equal(c_pstack thiz, const c_pstack S)
{
	return c_vector_equal((c_pvector)thiz->_l, (c_pvector)S->_l);
}

c_bool c_stack_less(c_pstack thiz, const c_pstack S)
{
	return c_vector_less((c_pvector)thiz->_l, (c_pvector)S->_l);
}