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/*
* Copyright 2006 The Android Open Source Project
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkDeque_DEFINED
#define SkDeque_DEFINED
#include "SkTypes.h"
class SK_API SkDeque : SkNoncopyable {
public:
explicit SkDeque(size_t elemSize);
SkDeque(size_t elemSize, void* storage, size_t storageSize);
~SkDeque();
bool empty() const { return 0 == fCount; }
int count() const { return fCount; }
size_t elemSize() const { return fElemSize; }
const void* front() const;
const void* back() const;
void* front() {
return (void*)((const SkDeque*)this)->front();
}
void* back() {
return (void*)((const SkDeque*)this)->back();
}
void* push_front();
void* push_back();
void pop_front();
void pop_back();
private:
struct Head;
public:
class F2BIter {
public:
/**
* Creates an uninitialized iterator. Must be reset()
*/
F2BIter();
F2BIter(const SkDeque& d);
void* next();
void reset(const SkDeque& d);
private:
SkDeque::Head* fHead;
char* fPos;
size_t fElemSize;
};
private:
Head* fFront;
Head* fBack;
size_t fElemSize;
void* fInitialStorage;
int fCount;
friend class Iter;
};
#endif
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