parser/Parser.h

   1 /*
   2  *  Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
   3  *  Copyright (C) 2001 Peter Kelly (pmk@post.com)
   4  *  Copyright (C) 2003, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
   5  *
   6  *  This library is free software; you can redistribute it and/or
   7  *  modify it under the terms of the GNU Library General Public
   8  *  License as published by the Free Software Foundation; either
   9  *  version 2 of the License, or (at your option) any later version.
  10  *
  11  *  This library is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  *  Library General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU Library General Public License
  17  *  along with this library; see the file COPYING.LIB.  If not, write to
  18  *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  19  *  Boston, MA 02110-1301, USA.
  20  *
  21  */
  22
  23 #ifndef Parser_h
  24 #define Parser_h
  25
  26 #include "Debugger.h"
  27 #include "Executable.h"
  28 #include "JSGlobalObject.h"
  29 #include "Lexer.h"
  30 #include "Nodes.h"
  31 #include "ParserArena.h"
  32 #include "SourceProvider.h"
  33 #include <wtf/Forward.h>
  34 #include <wtf/Noncopyable.h>
  35 #include <wtf/OwnPtr.h>
  36 #include <wtf/RefPtr.h>
  37
  38 namespace JSC {
  39
  40     class FunctionBodyNode;
  41     class ProgramNode;
  42     class UString;
  43
  44     template <typename T> struct ParserArenaData : ParserArenaDeletable { T data; };
  45
  46     class Parser : public Noncopyable {
  47     public:
  48         template <class ParsedNode>
  49         PassRefPtr<ParsedNode> parse(JSGlobalData* globalData, Debugger*, ExecState*, const SourceCode& source, int* errLine = 0, UString* errMsg = 0);
  50
  51         void didFinishParsing(SourceElements*, ParserArenaData<DeclarationStacks::VarStack>*,
  52                               ParserArenaData<DeclarationStacks::FunctionStack>*, CodeFeatures features, int lastLine, int numConstants);
  53
  54         ParserArena& arena() { return m_arena; }
  55
  56     private:
  57         void parse(JSGlobalData*, int* errLine, UString* errMsg);
  58
  59         ParserArena m_arena;
  60         const SourceCode* m_source;
  61         SourceElements* m_sourceElements;
  62         ParserArenaData<DeclarationStacks::VarStack>* m_varDeclarations;
  63         ParserArenaData<DeclarationStacks::FunctionStack>* m_funcDeclarations;
  64         CodeFeatures m_features;
  65         int m_lastLine;
  66         int m_numConstants;
  67     };
  68
  69     template <class ParsedNode>
  70     PassRefPtr<ParsedNode> Parser::parse(JSGlobalData* globalData, Debugger* debugger, ExecState* debuggerExecState, const SourceCode& source, int* errLine, UString* errMsg)
  71     {
  72         m_source = &source;
  73         if (ParsedNode::scopeIsFunction)
  74             globalData->lexer->setIsReparsing();
  75         parse(globalData, errLine, errMsg);
  76
  77         RefPtr<ParsedNode> result;
  78         if (m_sourceElements) {
  79             result = ParsedNode::create(globalData,
  80             m_sourceElements,
  81             m_varDeclarations ? &m_varDeclarations->data : 0,
  82             m_funcDeclarations ? &m_funcDeclarations->data : 0,
  83             source,
  84             m_features,
  85             m_numConstants);
  86             result->setLoc(m_source->firstLine(), m_lastLine);
  87         }
  88
  89         m_arena.reset();
  90
  91         m_source = 0;
  92         m_sourceElements = 0;
  93         m_varDeclarations = 0;
  94         m_funcDeclarations = 0;
  95
  96         if (debugger && !ParsedNode::scopeIsFunction)
  97             debugger->sourceParsed(debuggerExecState, source, *errLine, *errMsg);
  98         return result.release();
  99     }
 100
 101 } // namespace JSC
 102
 103 #endif // Parser_h