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/***************************************************************************
coretmpl.h
Core templates for basic non-string types.
****************************************************************************
Copyright Aaron Giles
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* 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.
* Neither the name 'MAME' nor the names of its contributors may be
used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY AARON GILES ''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 AARON GILES 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.
***************************************************************************/
#pragma once
#ifndef __CORETMPL_H__
#define __CORETMPL_H__
#include <assert.h>
#include "osdcore.h"
// ======================> dynamic_array
// an array that is dynamically sized and can optionally auto-expand
template<class _ElementType>
class dynamic_array
{
private:
// we don't support deep copying
dynamic_array(const dynamic_array &);
dynamic_array &operator=(const dynamic_array &);
public:
// construction/destruction
dynamic_array(int initial = 0)
: m_array(NULL),
m_count(0),
m_allocated(0) { if (initial != 0) expand_internal(initial); m_count = initial; }
virtual ~dynamic_array() { reset(); }
// operators
operator _ElementType *() { return &m_array[0]; }
operator const _ElementType *() const { return &m_array[0]; }
_ElementType &operator[](int index) { assert(index < m_count); return m_array[index]; }
const _ElementType &operator[](int index) const { assert(index < m_count); return m_array[index]; }
// simple getters
int count() const { return m_count; }
// helpers
void append(const _ElementType &element) { if (m_count == m_allocated) expand_internal((m_allocated == 0) ? 16 : (m_allocated << 1), true); m_array[m_count++] = element; }
void reset() { delete[] m_array; m_array = NULL; m_count = m_allocated = 0; }
void resize(int count, bool keepdata = false) { if (count > m_allocated) expand_internal(count, keepdata); m_count = count; }
private:
// internal helpers
void expand_internal(int count, bool keepdata = true)
{
// allocate a new array, copy the old one, and proceed
m_allocated = count;
_ElementType *newarray = new _ElementType[m_allocated];
if (keepdata)
for (int index = 0; index < m_count; index++)
newarray[index] = m_array[index];
delete[] m_array;
m_array = newarray;
}
// internal state
_ElementType * m_array; // allocated array
int m_count; // number of objects accessed in the list
int m_allocated; // amount of space allocated for the array
};
// ======================> dynamic_buffer
typedef dynamic_array<UINT8> dynamic_buffer;
#endif
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