1 /* 2 * Copyright (C) 2010 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' 14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 23 * THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef ImmutableArray_h 27 #define ImmutableArray_h 28 29 #include "APIObject.h" 30 #include <wtf/PassOwnArrayPtr.h> 31 #include <wtf/PassRefPtr.h> 32 #include <wtf/Vector.h> 33 34 namespace WebKit { 35 36 // ImmutableArray - An immutable array type suitable for vending to an API. 37 38 class ImmutableArray : public APIObject { 39 public: 40 static const Type APIType = TypeArray; 41 42 static PassRefPtr<ImmutableArray> create() 43 { 44 return adoptRef(new ImmutableArray); 45 } 46 static PassRefPtr<ImmutableArray> create(APIObject** entries, size_t size) 47 { 48 return adoptRef(new ImmutableArray(entries, size)); 49 } 50 static PassRefPtr<ImmutableArray> adopt(Vector<RefPtr<APIObject> >& entries) 51 { 52 return adoptRef(new ImmutableArray(entries)); 53 } 54 55 virtual ~ImmutableArray(); 56 57 template<typename T> 58 T* at(size_t i) { if (m_entries[i]->type() != T::APIType) return 0; return static_cast<T*>(m_entries[i].get()); } 59 60 APIObject* at(size_t i) { return m_entries[i].get(); } 61 size_t size() { return m_entries.size(); } 62 63 virtual bool isMutable() { return false; } 64 65 protected: 66 ImmutableArray(); 67 ImmutableArray(APIObject** entries, size_t size); 68 ImmutableArray(Vector<RefPtr<APIObject> >& entries); 69 70 virtual Type type() const { return APIType; } 71 72 Vector<RefPtr<APIObject> > m_entries; 73 }; 74 75 } // namespace WebKit 76 77 #endif // ImmutableArray_h 78
