ladybird/AK/Stack.h
Brian Gianforcaro 7d27798c8d AK: Use unchecked_append in AK::Stack, as we always validate the size
This removes one additional usage of Vector::append that stops us from
disabling it when compiling the Kernel.
2022-01-05 14:04:18 +01:00

73 lines
1.1 KiB
C++

/*
* Copyright (c) 2021, Jesse Buhagiar <jooster669@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Vector.h>
namespace AK {
template<typename T, size_t stack_size>
class Stack {
public:
Stack() = default;
~Stack() = default;
bool push(const T& item)
{
if (m_stack.size() >= stack_size)
return false;
m_stack.unchecked_append(item);
return true;
}
bool push(T&& item)
{
if (m_stack.size() >= stack_size)
return false;
m_stack.unchecked_append(move(item));
return true;
}
bool is_empty() const
{
return m_stack.is_empty();
}
size_t size() const
{
return m_stack.size();
}
bool pop()
{
if (is_empty())
return false;
m_stack.resize_and_keep_capacity(m_stack.size() - 1);
return true;
}
T& top()
{
return m_stack.last();
}
const T& top() const
{
return m_stack.last();
}
private:
Vector<T, stack_size> m_stack;
};
}
using AK::Stack;