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 "Nodes.h" 28 #include "SourceProvider.h" 29 #include <wtf/Forward.h> 30 #include <wtf/Noncopyable.h> 31 #include <wtf/OwnPtr.h> 32 #include <wtf/RefPtr.h> 33 34 namespace JSC { 35 36 class FunctionBodyNode; 37 class ProgramNode; 38 class UString; 39 40 template <typename T> struct ParserArenaData : ParserArenaDeletable { T data; }; 41 42 class Parser : public Noncopyable { 43 public: 44 template <class ParsedNode> PassRefPtr<ParsedNode> parse(ExecState*, Debugger*, const SourceCode&, int* errLine = 0, UString* errMsg = 0); 45 template <class ParsedNode> PassRefPtr<ParsedNode> reparse(JSGlobalData*, ParsedNode*); 46 void reparseInPlace(JSGlobalData*, FunctionBodyNode*); 47 48 void didFinishParsing(SourceElements*, ParserArenaData<DeclarationStacks::VarStack>*, 49 ParserArenaData<DeclarationStacks::FunctionStack>*, CodeFeatures features, int lastLine, int numConstants); 50 arena()51 ParserArena& arena() { return m_arena; } 52 53 private: 54 void parse(JSGlobalData*, int* errLine, UString* errMsg); 55 56 ParserArena m_arena; 57 const SourceCode* m_source; 58 SourceElements* m_sourceElements; 59 ParserArenaData<DeclarationStacks::VarStack>* m_varDeclarations; 60 ParserArenaData<DeclarationStacks::FunctionStack>* m_funcDeclarations; 61 CodeFeatures m_features; 62 int m_lastLine; 63 int m_numConstants; 64 }; 65 parse(ExecState * exec,Debugger * debugger,const SourceCode & source,int * errLine,UString * errMsg)66 template <class ParsedNode> PassRefPtr<ParsedNode> Parser::parse(ExecState* exec, Debugger* debugger, const SourceCode& source, int* errLine, UString* errMsg) 67 { 68 m_source = &source; 69 parse(&exec->globalData(), errLine, errMsg); 70 RefPtr<ParsedNode> result; 71 if (m_sourceElements) { 72 result = ParsedNode::create(&exec->globalData(), 73 m_sourceElements, 74 m_varDeclarations ? &m_varDeclarations->data : 0, 75 m_funcDeclarations ? &m_funcDeclarations->data : 0, 76 *m_source, 77 m_features, 78 m_numConstants); 79 result->setLoc(m_source->firstLine(), m_lastLine); 80 } 81 82 m_arena.reset(); 83 84 m_source = 0; 85 m_varDeclarations = 0; 86 m_funcDeclarations = 0; 87 88 if (debugger) 89 debugger->sourceParsed(exec, source, *errLine, *errMsg); 90 return result.release(); 91 } 92 reparse(JSGlobalData * globalData,ParsedNode * oldParsedNode)93 template <class ParsedNode> PassRefPtr<ParsedNode> Parser::reparse(JSGlobalData* globalData, ParsedNode* oldParsedNode) 94 { 95 m_source = &oldParsedNode->source(); 96 parse(globalData, 0, 0); 97 RefPtr<ParsedNode> result; 98 if (m_sourceElements) { 99 result = ParsedNode::create(globalData, 100 m_sourceElements, 101 m_varDeclarations ? &m_varDeclarations->data : 0, 102 m_funcDeclarations ? &m_funcDeclarations->data : 0, 103 *m_source, 104 oldParsedNode->features(), 105 m_numConstants); 106 result->setLoc(m_source->firstLine(), m_lastLine); 107 } 108 109 m_arena.reset(); 110 111 m_source = 0; 112 m_varDeclarations = 0; 113 m_funcDeclarations = 0; 114 115 return result.release(); 116 } 117 118 } // namespace JSC 119 120 #endif // Parser_h 121