JavaScriptCore-521.tar.gz

[apple/javascriptcore.git] / parser / Parser.h

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+/*
+ *  Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
+ *  Copyright (C) 2001 Peter Kelly (pmk@post.com)
+ *  Copyright (C) 2003, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public License
+ *  along with this library; see the file COPYING.LIB.  If not, write to
+ *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ *  Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef Parser_h
+#define Parser_h
+
+#include "SourceProvider.h"
+#include "Debugger.h"
+#include "Nodes.h"
+#include <wtf/Forward.h>
+#include <wtf/Noncopyable.h>
+#include <wtf/OwnPtr.h>
+#include <wtf/RefPtr.h>
+
+namespace JSC {
+
+    class FunctionBodyNode;
+    class ProgramNode;
+    class UString;
+
+    template <typename T>
+    struct ParserRefCountedData : ParserRefCounted {
+        ParserRefCountedData(JSGlobalData* globalData)
+            : ParserRefCounted(globalData)
+        {
+        }
+
+        T data;
+    };
+
+    class Parser : Noncopyable {
+    public:
+        template <class ParsedNode> PassRefPtr<ParsedNode> parse(ExecState*, Debugger*, const SourceCode&, int* errLine = 0, UString* errMsg = 0);
+        template <class ParsedNode> PassRefPtr<ParsedNode> reparse(JSGlobalData*, ParsedNode*);
+        void reparseInPlace(JSGlobalData*, FunctionBodyNode*);
+
+        void didFinishParsing(SourceElements*, ParserRefCountedData<DeclarationStacks::VarStack>*, 
+                              ParserRefCountedData<DeclarationStacks::FunctionStack>*, CodeFeatures features, int lastLine, int numConstants);
+
+    private:
+        void parse(JSGlobalData*, int* errLine, UString* errMsg);
+
+        const SourceCode* m_source;
+        RefPtr<SourceElements> m_sourceElements;
+        RefPtr<ParserRefCountedData<DeclarationStacks::VarStack> > m_varDeclarations;
+        RefPtr<ParserRefCountedData<DeclarationStacks::FunctionStack> > m_funcDeclarations;
+        CodeFeatures m_features;
+        int m_lastLine;
+        int m_numConstants;
+    };
+
+    template <class ParsedNode> PassRefPtr<ParsedNode> Parser::parse(ExecState* exec, Debugger* debugger, const SourceCode& source, int* errLine, UString* errMsg)
+    {
+        m_source = &source;
+        parse(&exec->globalData(), errLine, errMsg);
+        RefPtr<ParsedNode> result;
+        if (m_sourceElements) {
+            result = ParsedNode::create(&exec->globalData(),
+                                         m_sourceElements.get(),
+                                         m_varDeclarations ? &m_varDeclarations->data : 0, 
+                                         m_funcDeclarations ? &m_funcDeclarations->data : 0,
+                                         *m_source,
+                                         m_features,
+                                         m_numConstants);
+            result->setLoc(m_source->firstLine(), m_lastLine);
+        }
+
+        m_source = 0;
+        m_sourceElements = 0;
+        m_varDeclarations = 0;
+        m_funcDeclarations = 0;
+
+        if (debugger)
+            debugger->sourceParsed(exec, source, *errLine, *errMsg);
+        return result.release();
+    }
+
+    template <class ParsedNode> PassRefPtr<ParsedNode> Parser::reparse(JSGlobalData* globalData, ParsedNode* oldParsedNode)
+    {
+        m_source = &oldParsedNode->source();
+        parse(globalData, 0, 0);
+        RefPtr<ParsedNode> result;
+        if (m_sourceElements) {
+            result = ParsedNode::create(globalData,
+                                        m_sourceElements.get(),
+                                        m_varDeclarations ? &m_varDeclarations->data : 0, 
+                                        m_funcDeclarations ? &m_funcDeclarations->data : 0,
+                                        *m_source,
+                                        oldParsedNode->features(),
+                                        m_numConstants);
+            result->setLoc(m_source->firstLine(), m_lastLine);
+        }
+
+        m_source = 0;
+        m_sourceElements = 0;
+        m_varDeclarations = 0;
+        m_funcDeclarations = 0;
+
+        return result.release();
+    }
+
+} // namespace JSC
+
+#endif // Parser_h