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      1 /*
      2  * Copyright (C) 2008 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. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef CachedScriptSourceProvider_h
     27 #define CachedScriptSourceProvider_h
     28 
     29 #include "CachedResourceClient.h"
     30 #include "CachedResourceHandle.h"
     31 #include "CachedScript.h"
     32 #include "JSDOMBinding.h" // for stringToUString
     33 #include "ScriptSourceProvider.h"
     34 #include <parser/SourceCode.h>
     35 
     36 namespace WebCore {
     37 
     38     class CachedScriptSourceProvider : public ScriptSourceProvider, public CachedResourceClient {
     39         WTF_MAKE_FAST_ALLOCATED;
     40     public:
     41         static PassRefPtr<CachedScriptSourceProvider> create(CachedScript* cachedScript) { return adoptRef(new CachedScriptSourceProvider(cachedScript)); }
     42 
     43         virtual ~CachedScriptSourceProvider()
     44         {
     45             m_cachedScript->removeClient(this);
     46         }
     47 
     48         JSC::UString getRange(int start, int end) const { return JSC::UString(m_cachedScript->script().characters() + start, end - start); }
     49         const UChar* data() const { return m_cachedScript->script().characters(); }
     50         int length() const { return m_cachedScript->script().length(); }
     51         const String& source() const { return m_cachedScript->script(); }
     52 
     53         virtual void cacheSizeChanged(int delta)
     54         {
     55             m_cachedScript->sourceProviderCacheSizeChanged(delta);
     56         }
     57 
     58     private:
     59         CachedScriptSourceProvider(CachedScript* cachedScript)
     60             : ScriptSourceProvider(stringToUString(cachedScript->response().url()), cachedScript->sourceProviderCache())
     61             , m_cachedScript(cachedScript)
     62         {
     63             m_cachedScript->addClient(this);
     64         }
     65 
     66         CachedResourceHandle<CachedScript> m_cachedScript;
     67     };
     68 
     69     inline JSC::SourceCode makeSource(CachedScript* cachedScript)
     70     {
     71         return JSC::SourceCode(CachedScriptSourceProvider::create(cachedScript));
     72     }
     73 
     74 } // namespace WebCore
     75 
     76 #endif // CachedScriptSourceProvider_h
     77