parser/Parser.cpp

   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 #include "config.h"
  24 #include "Parser.h"
  25
  26 #include "Debugger.h"
  27 #include "Lexer.h"
  28 #include <wtf/HashSet.h>
  29 #include <wtf/Vector.h>
  30 #include <memory>
  31
  32 using std::auto_ptr;
  33
  34 #ifndef yyparse
  35 extern int jscyyparse(void*);
  36 #endif
  37
  38 namespace JSC {
  39
  40 void Parser::parse(JSGlobalData* globalData, int* errLine, UString* errMsg)
  41 {
  42     m_sourceElements = 0;
  43
  44     int defaultErrLine;
  45     UString defaultErrMsg;
  46
  47     if (!errLine)
  48         errLine = &defaultErrLine;
  49     if (!errMsg)
  50         errMsg = &defaultErrMsg;
  51
  52     *errLine = -1;
  53     *errMsg = 0;
  54
  55     Lexer& lexer = *globalData->lexer;
  56     lexer.setCode(*m_source);
  57
  58     int parseError = jscyyparse(globalData);
  59     bool lexError = lexer.sawError();
  60     int lineNumber = lexer.lineNumber();
  61     lexer.clear();
  62
  63     if (parseError || lexError) {
  64         *errLine = lineNumber;
  65         *errMsg = "Parse error";
  66         m_sourceElements = 0;
  67     }
  68 }
  69
  70 void Parser::reparseInPlace(JSGlobalData* globalData, FunctionBodyNode* functionBodyNode)
  71 {
  72     ASSERT(!functionBodyNode->data());
  73
  74     m_source = &functionBodyNode->source();
  75     globalData->lexer->setIsReparsing();
  76     parse(globalData, 0, 0);
  77     ASSERT(m_sourceElements);
  78
  79     functionBodyNode->adoptData(std::auto_ptr<ScopeNodeData>(new ScopeNodeData(globalData->parser->arena(),
  80         m_sourceElements,
  81         m_varDeclarations ? &m_varDeclarations->data : 0,
  82         m_funcDeclarations ? &m_funcDeclarations->data : 0,
  83         m_numConstants)));
  84     bool usesArguments = functionBodyNode->usesArguments();
  85     functionBodyNode->setFeatures(m_features);
  86     if (usesArguments && !functionBodyNode->usesArguments())
  87         functionBodyNode->setUsesArguments();
  88
  89     ASSERT(globalData->parser->arena().isEmpty());
  90
  91     m_source = 0;
  92     m_sourceElements = 0;
  93     m_varDeclarations = 0;
  94     m_funcDeclarations = 0;
  95 }
  96
  97 void Parser::didFinishParsing(SourceElements* sourceElements, ParserArenaData<DeclarationStacks::VarStack>* varStack,
  98                               ParserArenaData<DeclarationStacks::FunctionStack>* funcStack, CodeFeatures features, int lastLine, int numConstants)
  99 {
 100     m_sourceElements = sourceElements;
 101     m_varDeclarations = varStack;
 102     m_funcDeclarations = funcStack;
 103     m_features = features;
 104     m_lastLine = lastLine;
 105     m_numConstants = numConstants;
 106 }
 107
 108 } // namespace JSC