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-//
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-// Urho3D Engine
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-// Copyright (c) 2008-2011 Lasse Öörni
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-//
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-// Permission is hereby granted, free of charge, to any person obtaining a copy
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-// of this software and associated documentation files (the "Software"), to deal
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-// in the Software without restriction, including without limitation the rights
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-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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-// copies of the Software, and to permit persons to whom the Software is
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-// furnished to do so, subject to the following conditions:
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-//
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-// The above copyright notice and this permission notice shall be included in
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-// all copies or substantial portions of the Software.
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-//
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-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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-// THE SOFTWARE.
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-//
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-
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-#pragma once
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-
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-/// Random access iterator
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-template <class T> class RandomAccessIterator
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-{
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-public:
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- /// Construct
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- explicit RandomAccessIterator(T* ptr) :
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- ptr_(ptr)
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- {
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- }
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-
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- /// Point to the object
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- T* operator -> () const { return ptr_; }
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- /// Dereference the object
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- T& operator * () const { return *ptr_; }
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- /// Preincrement the pointer
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- RandomAccessIterator<T>& operator ++ () { ++ptr_; return *this; }
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- /// Postincrement the pointer
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- RandomAccessIterator<T> operator ++ (int) { RandomAccessIterator<T> it = *this; ++ptr_; return it; }
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- /// Predecrement the pointer
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- RandomAccessIterator<T>& operator -- () { --ptr_; return *this; }
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- /// Postdecrement the pointer
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- RandomAccessIterator<T> operator -- (int) { RandomAccessIterator<T> it = *this; --ptr_; return it; }
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- /// Add an offset to the pointer
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- RandomAccessIterator<T>& operator += (int value) { ptr_ += value; return *this; }
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- /// Subtract an offset from the pointer
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- RandomAccessIterator<T>& operator -= (int value) { ptr_ -= value; return *this; }
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- /// Add an offset to the pointer
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- RandomAccessIterator<T> operator + (int value) const { return RandomAccessIterator<T>(ptr_ + value); }
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- /// Subtract an offset from the pointer
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- RandomAccessIterator<T> operator - (int value) const { return RandomAccessIterator<T>(ptr_ - value); }
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- /// Calculate offset to another iterator
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- int operator - (const RandomAccessIterator& rhs) const { return ptr_ - rhs.ptr_; }
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- /// Test for equality with another iterator
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- bool operator == (const RandomAccessIterator& rhs) const { return ptr_ == rhs.ptr_; }
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- /// Test for inequality with another iterator
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- bool operator != (const RandomAccessIterator& rhs) const { return ptr_ != rhs.ptr_; }
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- /// Test for less than with another iterator
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- bool operator < (const RandomAccessIterator& rhs) const { return ptr_ < rhs.ptr_; }
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- /// Test for greater than with another iterator
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- bool operator > (const RandomAccessIterator& rhs) const { return ptr_ > rhs.ptr_; }
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-
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- /// Pointer
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- T* ptr_;
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-};
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-
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-/// Random access const iterator
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-template <class T> class RandomAccessConstIterator
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-{
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-public:
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- /// Construct
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- explicit RandomAccessConstIterator(T* ptr) :
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- ptr_(ptr)
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- {
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- }
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-
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- /// Construct from a non-const iterator
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- RandomAccessConstIterator(const RandomAccessIterator<T>& rhs) :
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- ptr_(rhs.ptr_)
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- {
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- }
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-
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- /// Assign from a non-const iterator
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- RandomAccessConstIterator<T>& operator = (const RandomAccessIterator<T>& rhs) { ptr_ = rhs.ptr_; return *this; }
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- /// Point to the object
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- const T* operator -> () const { return ptr_; }
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- /// Dereference the object
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- const T& operator * () const { return *ptr_; }
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- /// Preincrement the pointer
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- RandomAccessConstIterator<T>& operator ++ () { ++ptr_; return *this; }
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- /// Postincrement the pointer
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- RandomAccessConstIterator<T> operator ++ (int) { RandomAccessConstIterator<T> it = *this; ++ptr_; return it; }
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- /// Predecrement the pointer
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- RandomAccessConstIterator<T>& operator -- () { --ptr_; return *this; }
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- /// Postdecrement the pointer
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- RandomAccessConstIterator<T> operator -- (int) { RandomAccessConstIterator<T> it = *this; --ptr_; return it; }
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- /// Add an offset to the pointer
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- RandomAccessConstIterator<T>& operator += (int value) { ptr_ += value; return *this; }
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- /// Subtract an offset from the pointer
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- RandomAccessConstIterator<T>& operator -= (int value) { ptr_ -= value; return *this; }
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- /// Add an offset to the pointer
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- RandomAccessConstIterator<T> operator + (int value) const { return RandomAccessConstIterator<T>(ptr_ + value); }
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- /// Subtract an offset from the pointer
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- RandomAccessConstIterator<T> operator - (int value) const { return RandomAccessConstIterator<T>(ptr_ - value); }
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- /// Calculate offset to another iterator
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- int operator - (const RandomAccessConstIterator& rhs) const { return ptr_ - rhs.ptr_; }
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- /// Test for equality with another iterator
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- bool operator == (const RandomAccessConstIterator& rhs) const { return ptr_ == rhs.ptr_; }
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- /// Test for inequality with another iterator
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- bool operator != (const RandomAccessConstIterator& rhs) const { return ptr_ != rhs.ptr_; }
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- /// Test for less than with another iterator
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- bool operator < (const RandomAccessConstIterator& rhs) const { return ptr_ < rhs.ptr_; }
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- /// Test for greater than with another iterator
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- bool operator > (const RandomAccessConstIterator& rhs) const { return ptr_ > rhs.ptr_; }
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-
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- /// Pointer
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- T* ptr_;
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-};
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Lasse Öörni