mirror of https://github.com/TTimo/GtkRadiant.git
fixed eol-style
git-svn-id: svn://svn.icculus.org/gtkradiant/GtkRadiant/trunk@23 8a3a26a2-13c4-0310-b231-cf6edde360e5
This commit is contained in:
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parent
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@ -1,239 +1,239 @@
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/*
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Copyright (C) 2001-2006, William Joseph.
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All Rights Reserved.
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This file is part of GtkRadiant.
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GtkRadiant is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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GtkRadiant is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GtkRadiant; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#if !defined(INCLUDED_CONTAINER_STACK_H)
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#define INCLUDED_CONTAINER_STACK_H
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#include "memory/allocator.h"
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#include <algorithm>
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/// \brief A stack whose storage capacity is variable at run-time. Similar to std::vector.
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///
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/// - Pushing or popping elements is a constant-time operation (on average).
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/// - The storage capacity of the stack will grow when a new element is added beyond the current capacity. Iterators are invalidated when the storage capacity grows.
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/// - DefaultConstructible, Copyable, Assignable.
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/// - Compatible with the containers and algorithms in the Standard Template Library (STL) - http://www.sgi.com/tech/stl/
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///
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/// \param Type: The type to be stored in the stack. Must provide a copy-constructor.
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template<typename Type>
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class Stack : public DefaultAllocator<Type>
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{
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typedef DefaultAllocator<Type> Allocator;
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enum
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{
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DEFAULT_CAPACITY = 4,
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};
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typedef Type* pointer;
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typedef const Type* const_pointer;
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public:
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typedef const_pointer const_iterator;
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private:
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pointer m_data;
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pointer m_end;
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std::size_t m_capacity;
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void insert(const Type& value)
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{
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Allocator::construct(m_end++, value);
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}
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void insert_overflow(const Type& value)
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{
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const std::size_t new_capacity = (m_capacity) ? m_capacity + m_capacity : std::size_t(DEFAULT_CAPACITY);
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const pointer new_data = Allocator::allocate(new_capacity);
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const pointer new_end = std::copy(m_data, m_end, new_data);
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destroy();
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Allocator::deallocate(m_data, m_capacity);
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m_capacity = new_capacity;
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m_data = new_data;
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m_end = new_end;
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insert(value);
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}
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void destroy()
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{
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for(pointer p = m_data; p != m_end; ++p)
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{
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Allocator::destroy(p);
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}
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}
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void construct(const Stack& other)
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{
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pointer p = m_data;
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for(const_iterator i = other.begin(); i != other.end(); ++i)
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{
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Allocator::construct(p++, *i);
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}
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}
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public:
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Stack() :
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m_data(0),
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m_end(0),
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m_capacity(0)
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{
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}
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Stack(const Type& value) :
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m_data(0),
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m_end(0),
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m_capacity(0)
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{
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push(value);
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}
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Stack(const Stack& other) :
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DefaultAllocator<Type>(other)
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{
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m_capacity = other.m_capacity;
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m_data = Allocator::allocate(m_capacity);
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construct(other);
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m_end = m_data + other.size();
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}
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~Stack()
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{
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destroy();
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Allocator::deallocate(m_data, m_capacity);
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}
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const_iterator begin() const
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{
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return m_data;
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}
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const_iterator end() const
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{
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return m_end;
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}
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bool empty() const
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{
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return end() == begin();
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}
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void clear()
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{
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destroy();
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m_end = m_data;
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}
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std::size_t size() const
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{
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return m_end - m_data;
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}
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Type operator[](const std::size_t i) const
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{
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return m_data[i];
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}
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/// \brief Pushes \p value onto the stack at the top element. If reserved storage is insufficient for the new element, this will invalidate all iterators.
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void push(const Type& value)
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{
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if(size() == m_capacity)
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{
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insert_overflow(value);
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}
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else
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{
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insert(value);
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}
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}
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/// \brief Removes the top element of the stack.
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void pop()
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{
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Allocator::destroy(--m_end);
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}
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/// \brief Returns the top element of the mutable stack.
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Type& top()
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{
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return *(m_end-1);
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}
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/// \brief Returns the top element of the non-mutable stack.
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const Type& top() const
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{
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return *(m_end-1);
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}
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/// \brief Returns the element below the top element of the mutable stack.
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Type& parent()
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{
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return *(m_end-2);
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}
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/// \brief Returns the element below the top element of the non-mutable stack.
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const Type& parent() const
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{
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return *(m_end-2);
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}
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/// \brief Swaps the values of this stack and \p other.
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void swap(Stack& other)
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{
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std::swap(m_data, other.m_data);
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std::swap(m_end, other.m_end);
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std::swap(m_capacity, other.m_capacity);
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}
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#if 1 // use copy-swap technique
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Stack& operator=(const Stack& other)
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{
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Stack temp(other);
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temp.swap(*this);
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return *this;
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}
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#else // avoids memory allocation if capacity is already sufficient.
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Stack& operator=(const Stack& other)
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{
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if(&other != this)
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{
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destroy();
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if(other.size() > m_capacity)
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{
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Allocator::deallocate(m_data, m_capacity);
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m_capacity = other.m_capacity;
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m_data = Allocator::allocate(m_capacity);
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}
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m_end = m_data + other.size();
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construct(other);
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}
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return *this;
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}
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#endif
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};
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/// \brief Returns true if \p self is lexicographically less than \p other.
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template<typename Type>
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inline bool operator<(const Stack<Type>& self, const Stack<Type>& other)
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{
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return std::lexicographical_compare(self.begin(), self.end(), other.begin(), other.end());
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}
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namespace std
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{
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/// \brief Swaps the values of \p self and \p other.
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/// Overloads std::swap().
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template<typename Type>
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inline void swap(Stack<Type>& self, Stack<Type>& other)
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{
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self.swap(other);
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}
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}
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#endif
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/*
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Copyright (C) 2001-2006, William Joseph.
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All Rights Reserved.
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This file is part of GtkRadiant.
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GtkRadiant is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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GtkRadiant is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GtkRadiant; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#if !defined(INCLUDED_CONTAINER_STACK_H)
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#define INCLUDED_CONTAINER_STACK_H
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#include "memory/allocator.h"
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#include <algorithm>
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/// \brief A stack whose storage capacity is variable at run-time. Similar to std::vector.
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///
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/// - Pushing or popping elements is a constant-time operation (on average).
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/// - The storage capacity of the stack will grow when a new element is added beyond the current capacity. Iterators are invalidated when the storage capacity grows.
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/// - DefaultConstructible, Copyable, Assignable.
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/// - Compatible with the containers and algorithms in the Standard Template Library (STL) - http://www.sgi.com/tech/stl/
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///
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/// \param Type: The type to be stored in the stack. Must provide a copy-constructor.
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template<typename Type>
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class Stack : public DefaultAllocator<Type>
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{
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typedef DefaultAllocator<Type> Allocator;
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enum
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{
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DEFAULT_CAPACITY = 4,
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};
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typedef Type* pointer;
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typedef const Type* const_pointer;
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public:
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typedef const_pointer const_iterator;
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private:
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pointer m_data;
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pointer m_end;
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std::size_t m_capacity;
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void insert(const Type& value)
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{
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Allocator::construct(m_end++, value);
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}
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void insert_overflow(const Type& value)
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{
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const std::size_t new_capacity = (m_capacity) ? m_capacity + m_capacity : std::size_t(DEFAULT_CAPACITY);
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const pointer new_data = Allocator::allocate(new_capacity);
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const pointer new_end = std::copy(m_data, m_end, new_data);
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destroy();
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Allocator::deallocate(m_data, m_capacity);
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m_capacity = new_capacity;
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m_data = new_data;
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m_end = new_end;
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insert(value);
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}
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void destroy()
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{
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for(pointer p = m_data; p != m_end; ++p)
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{
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Allocator::destroy(p);
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}
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}
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void construct(const Stack& other)
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{
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pointer p = m_data;
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for(const_iterator i = other.begin(); i != other.end(); ++i)
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{
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Allocator::construct(p++, *i);
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}
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}
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public:
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Stack() :
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m_data(0),
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m_end(0),
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m_capacity(0)
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{
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}
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Stack(const Type& value) :
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m_data(0),
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m_end(0),
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m_capacity(0)
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{
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push(value);
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}
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Stack(const Stack& other) :
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DefaultAllocator<Type>(other)
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{
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m_capacity = other.m_capacity;
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m_data = Allocator::allocate(m_capacity);
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construct(other);
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m_end = m_data + other.size();
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}
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~Stack()
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{
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destroy();
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Allocator::deallocate(m_data, m_capacity);
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}
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const_iterator begin() const
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{
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return m_data;
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}
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const_iterator end() const
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{
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return m_end;
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}
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bool empty() const
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{
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return end() == begin();
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}
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void clear()
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{
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destroy();
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m_end = m_data;
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}
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std::size_t size() const
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{
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return m_end - m_data;
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}
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Type operator[](const std::size_t i) const
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{
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return m_data[i];
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}
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/// \brief Pushes \p value onto the stack at the top element. If reserved storage is insufficient for the new element, this will invalidate all iterators.
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void push(const Type& value)
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{
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if(size() == m_capacity)
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{
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insert_overflow(value);
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}
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else
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{
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insert(value);
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}
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}
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/// \brief Removes the top element of the stack.
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void pop()
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{
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Allocator::destroy(--m_end);
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}
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/// \brief Returns the top element of the mutable stack.
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Type& top()
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{
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return *(m_end-1);
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}
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/// \brief Returns the top element of the non-mutable stack.
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const Type& top() const
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{
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return *(m_end-1);
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}
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/// \brief Returns the element below the top element of the mutable stack.
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Type& parent()
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{
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return *(m_end-2);
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}
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/// \brief Returns the element below the top element of the non-mutable stack.
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const Type& parent() const
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{
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return *(m_end-2);
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}
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/// \brief Swaps the values of this stack and \p other.
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void swap(Stack& other)
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{
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std::swap(m_data, other.m_data);
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std::swap(m_end, other.m_end);
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std::swap(m_capacity, other.m_capacity);
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}
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#if 1 // use copy-swap technique
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Stack& operator=(const Stack& other)
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{
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Stack temp(other);
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temp.swap(*this);
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return *this;
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}
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#else // avoids memory allocation if capacity is already sufficient.
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Stack& operator=(const Stack& other)
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{
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if(&other != this)
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{
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destroy();
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if(other.size() > m_capacity)
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{
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Allocator::deallocate(m_data, m_capacity);
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m_capacity = other.m_capacity;
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m_data = Allocator::allocate(m_capacity);
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}
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m_end = m_data + other.size();
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construct(other);
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}
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return *this;
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}
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#endif
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};
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/// \brief Returns true if \p self is lexicographically less than \p other.
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template<typename Type>
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inline bool operator<(const Stack<Type>& self, const Stack<Type>& other)
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{
|
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return std::lexicographical_compare(self.begin(), self.end(), other.begin(), other.end());
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}
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namespace std
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{
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/// \brief Swaps the values of \p self and \p other.
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/// Overloads std::swap().
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template<typename Type>
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inline void swap(Stack<Type>& self, Stack<Type>& other)
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{
|
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self.swap(other);
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}
|
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}
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#endif
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|
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