1/* 2 * Copyright (C) 2008, 2009, 2012, 2013 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 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 <wtf/PassOwnPtr.h> 33#include <wtf/RefCounted.h> 34#include <wtf/text/TextPosition.h> 35#include <wtf/text/WTFString.h> 36 37namespace JSC { 38 39 class SourceProvider : public RefCounted<SourceProvider> { 40 public: 41 static const intptr_t nullID = 1; 42 43 JS_EXPORT_PRIVATE SourceProvider(const String& url, const TextPosition& startPosition); 44 45 JS_EXPORT_PRIVATE virtual ~SourceProvider(); 46 47 virtual const String& source() const = 0; 48 String getRange(int start, int end) const 49 { 50 return source().substringSharingImpl(start, end - start); 51 } 52 53 const String& url() { return m_url; } 54 TextPosition startPosition() const { return m_startPosition; } 55 intptr_t asID() 56 { 57 ASSERT(this); 58 if (!this) // Be defensive in release mode. 59 return nullID; 60 if (!m_id) 61 getID(); 62 return m_id; 63 } 64 65 bool isValid() const { return m_validated; } 66 void setValid() { m_validated = true; } 67 68 private: 69 70 JS_EXPORT_PRIVATE void getID(); 71 Vector<size_t>& lineStarts(); 72 73 String m_url; 74 TextPosition m_startPosition; 75 bool m_validated : 1; 76 uintptr_t m_id : sizeof(uintptr_t) * 8 - 1; 77 }; 78 79 class StringSourceProvider : public SourceProvider { 80 public: 81 static PassRefPtr<StringSourceProvider> create(const String& source, const String& url, const TextPosition& startPosition = TextPosition::minimumPosition()) 82 { 83 return adoptRef(new StringSourceProvider(source, url, startPosition)); 84 } 85 86 virtual const String& source() const override 87 { 88 return m_source; 89 } 90 91 private: 92 StringSourceProvider(const String& source, const String& url, const TextPosition& startPosition) 93 : SourceProvider(url, startPosition) 94 , m_source(source) 95 { 96 } 97 98 String m_source; 99 }; 100 101} // namespace JSC 102 103#endif // SourceProvider_h 104