#if !defined( CSTACK_H )
#define CSTACK_H
/*
* An implementation of a char stack in heap memory.
* Copyright (C) 2016 Michael Goehler
*
* This file is part of mdp.
*
* This program 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.
*
* This program 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, see <http://www.gnu.org/licenses/>.
*
*
* struct: cstack_t which defines char stack type in heap memory
*
* function: cstack_init to intialize struct of type cstack_t
* function: cstack_t->push to add one char on top if the stack
* function: cstack_t->pop to remove the top char from the stack
* function: cstack_t->top to test if the top char is a given char
* function: cstack_t->empty to test if the stack is empty
* function: cstack_t->delete to free the allocated memory
*
* Example:
* cstack_t *p = cstack_init();
* (p->push)(p, 'X');
* printf("%c\n", (p->pop)(p));
* (p->delete)(p);
*
*/
#include "common.h"
typedef struct _cstack_t {
wchar_t *content;
size_t alloc;
size_t size;
int head;
void (*push)(struct _cstack_t *self, wchar_t c);
wchar_t (*pop)(struct _cstack_t *self);
bool (*top)(struct _cstack_t *self, wchar_t c);
bool (*empty)(struct _cstack_t *self);
void (*delete)(struct _cstack_t *self);
} cstack_t;
cstack_t *cstack_init();
void cstack_push(cstack_t *self, wchar_t c);
wchar_t cstack_pop(cstack_t *self);
bool cstack_top(cstack_t *self, wchar_t c);
bool cstack_empty(cstack_t *self);
void cstack_delete(cstack_t *self);
#endif // !defined( CSTACK_H )