parser/SourceProviderCacheItem.h

   1 /*
   2  * Copyright (C) 2011 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 SourceProviderCacheItem_h
  27 #define SourceProviderCacheItem_h
  28
  29 #include "ParserTokens.h"
  30 #include <wtf/Vector.h>
  31 #include <wtf/text/WTFString.h>
  32
  33 namespace JSC {
  34
  35 class SourceProviderCacheItem {
  36 public:
  37     SourceProviderCacheItem(int closeBraceLine, int closeBracePos)
  38         : closeBraceLine(closeBraceLine)
  39         , closeBracePos(closeBracePos)
  40     {
  41     }
  42     unsigned approximateByteSize() const
  43     {
  44         // The identifiers are uniqued strings so most likely there are few names that actually use any additional memory.
  45         static const unsigned assummedAverageIdentifierSize = sizeof(RefPtr<StringImpl>) + 2;
  46         unsigned size = sizeof(*this);
  47         size += usedVariables.size() * assummedAverageIdentifierSize;
  48         size += writtenVariables.size() * assummedAverageIdentifierSize;
  49         return size;
  50     }
  51     JSToken closeBraceToken() const
  52     {
  53         JSToken token;
  54         token.m_type = CLOSEBRACE;
  55         token.m_data.intValue = closeBracePos;
  56         token.m_info.startOffset = closeBracePos;
  57         token.m_info.endOffset = closeBracePos + 1;
  58         token.m_info.line = closeBraceLine;
  59         return token;
  60     }
  61
  62     int closeBraceLine;
  63     int closeBracePos;
  64     bool usesEval;
  65     bool strictMode;
  66     bool needsFullActivation;
  67     Vector<RefPtr<StringImpl> > usedVariables;
  68     Vector<RefPtr<StringImpl> > writtenVariables;
  69 };
  70
  71 }
  72
  73 #endif // SourceProviderCacheItem_h