1 /* 2 * Copyright (C) 2008, 2009 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 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of 14 * its contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef SourceProvider_h 30 #define SourceProvider_h 31 32 #include "SourceProviderCache.h" 33 #include "UString.h" 34 #include <wtf/PassOwnPtr.h> 35 #include <wtf/RefCounted.h> 36 #include <wtf/UnusedParam.h> 37 #include <wtf/text/TextPosition.h> 38 39 namespace JSC { 40 41 class SourceProvider : public RefCounted<SourceProvider> { 42 public: 43 SourceProvider(const UString& url, SourceProviderCache* cache = 0) m_url(url)44 : m_url(url) 45 , m_validated(false) 46 , m_cache(cache ? cache : new SourceProviderCache) 47 , m_cacheOwned(!cache) 48 { 49 } ~SourceProvider()50 virtual ~SourceProvider() 51 { 52 if (m_cacheOwned) 53 delete m_cache; 54 } 55 56 virtual UString getRange(int start, int end) const = 0; 57 virtual const UChar* data() const = 0; 58 virtual int length() const = 0; 59 url()60 const UString& url() { return m_url; } startPosition()61 virtual TextPosition1 startPosition() const { return TextPosition1::minimumPosition(); } asID()62 intptr_t asID() { return reinterpret_cast<intptr_t>(this); } 63 isValid()64 bool isValid() const { return m_validated; } setValid()65 void setValid() { m_validated = true; } 66 cache()67 SourceProviderCache* cache() const { return m_cache; } notifyCacheSizeChanged(int delta)68 void notifyCacheSizeChanged(int delta) { if (!m_cacheOwned) cacheSizeChanged(delta); } 69 70 private: cacheSizeChanged(int delta)71 virtual void cacheSizeChanged(int delta) { UNUSED_PARAM(delta); } 72 73 UString m_url; 74 bool m_validated; 75 SourceProviderCache* m_cache; 76 bool m_cacheOwned; 77 }; 78 79 class UStringSourceProvider : public SourceProvider { 80 public: create(const UString & source,const UString & url)81 static PassRefPtr<UStringSourceProvider> create(const UString& source, const UString& url) 82 { 83 return adoptRef(new UStringSourceProvider(source, url)); 84 } 85 getRange(int start,int end)86 UString getRange(int start, int end) const 87 { 88 return m_source.substringSharingImpl(start, end - start); 89 } data()90 const UChar* data() const { return m_source.characters(); } length()91 int length() const { return m_source.length(); } 92 93 private: UStringSourceProvider(const UString & source,const UString & url)94 UStringSourceProvider(const UString& source, const UString& url) 95 : SourceProvider(url) 96 , m_source(source) 97 { 98 } 99 100 UString m_source; 101 }; 102 103 } // namespace JSC 104 105 #endif // SourceProvider_h 106