75 lines
1.7 KiB
C++
75 lines
1.7 KiB
C++
/*
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* Copyright (C) 2006 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef SkDeque_DEFINED
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#define SkDeque_DEFINED
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#include "SkTypes.h"
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class SkDeque : SkNoncopyable {
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public:
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explicit SkDeque(size_t elemSize);
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SkDeque(size_t elemSize, void* storage, size_t storageSize);
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~SkDeque();
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bool empty() const { return 0 == fCount; }
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int count() const { return fCount; }
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size_t elemSize() const { return fElemSize; }
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const void* front() const;
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const void* back() const;
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void* front() {
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return (void*)((const SkDeque*)this)->front();
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}
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void* back() {
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return (void*)((const SkDeque*)this)->back();
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}
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void* push_front();
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void* push_back();
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void pop_front();
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void pop_back();
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private:
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struct Head;
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public:
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class Iter {
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public:
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Iter(const SkDeque& d);
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void* next();
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private:
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SkDeque::Head* fHead;
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char* fPos;
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size_t fElemSize;
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};
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private:
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Head* fFront;
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Head* fBack;
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size_t fElemSize;
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void* fInitialStorage;
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int fCount;
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friend class Iter;
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};
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#endif
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