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/*
* Copyright (c) 2020 - 2023 the ThorVG project. All rights reserved.
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef _TVG_ARRAY_H_
#define _TVG_ARRAY_H_
#include <memory.h>
namespace tvg
{
template<class T>
struct Array
{
T* data = nullptr;
uint32_t count = 0;
uint32_t reserved = 0;
void push(T element)
{
if (count + 1 > reserved) {
reserved = (count + 1) * 2;
auto p = data;
data = static_cast<T*>(realloc(data, sizeof(T) * reserved));
if (!data) {
data = p;
return;
}
}
data[count++] = element;
}
bool reserve(uint32_t size)
{
if (size > reserved) {
reserved = size;
auto p = data;
data = static_cast<T*>(realloc(data, sizeof(T) * reserved));
if (!data) {
data = p;
return false;
}
}
return true;
}
bool grow(uint32_t size)
{
return reserve(count + size);
}
T* ptr()
{
return data + count;
}
void pop()
{
if (count > 0) --count;
}
void reset()
{
if (data) {
free(data);
data = nullptr;
}
count = reserved = 0;
}
void clear()
{
count = 0;
}
void operator=(const Array& rhs)
{
reserve(rhs.count);
if (rhs.count > 0) memcpy(data, rhs.data, sizeof(T) * reserved);
count = rhs.count;
}
~Array()
{
if (data) free(data);
}
};
}
#endif //_TVG_ARRAY_H_
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