JavaScriptCore-521.tar.gz

[apple/javascriptcore.git] / runtime / JSFunction.h

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+/*
+ *  Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
+ *  Copyright (C) 2003, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
+ *  Copyright (C) 2007 Cameron Zwarich (cwzwarich@uwaterloo.ca)
+ *  Copyright (C) 2007 Maks Orlovich
+ *
+ *  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 JSFunction_h
+#define JSFunction_h
+
+#include "InternalFunction.h"
+#include "JSVariableObject.h"
+#include "SymbolTable.h"
+#include "Nodes.h"
+#include "JSObject.h"
+
+namespace JSC {
+
+    class FunctionBodyNode;
+    class FunctionPrototype;
+    class JSActivation;
+    class JSGlobalObject;
+
+    class JSFunction : public InternalFunction {
+        friend class JIT;
+        friend class Interpreter;
+
+        typedef InternalFunction Base;
+
+        JSFunction(PassRefPtr<Structure> structure)
+            : InternalFunction(structure)
+            , m_scopeChain(NoScopeChain())
+        {
+        }
+
+    public:
+        JSFunction(ExecState*, const Identifier&, FunctionBodyNode*, ScopeChainNode*);
+        ~JSFunction();
+
+        virtual bool getOwnPropertySlot(ExecState*, const Identifier&, PropertySlot&);
+        virtual void put(ExecState*, const Identifier& propertyName, JSValuePtr, PutPropertySlot&);
+        virtual bool deleteProperty(ExecState*, const Identifier& propertyName);
+
+        JSObject* construct(ExecState*, const ArgList&);
+        JSValuePtr call(ExecState*, JSValuePtr thisValue, const ArgList&);
+
+        void setScope(const ScopeChain& scopeChain) { m_scopeChain = scopeChain; }
+        ScopeChain& scope() { return m_scopeChain; }
+
+        void setBody(FunctionBodyNode* body) { m_body = body; }
+        void setBody(PassRefPtr<FunctionBodyNode> body) { m_body = body; }
+        FunctionBodyNode* body() const { return m_body.get(); }
+
+        virtual void mark();
+
+        static const ClassInfo info;
+
+        static PassRefPtr<Structure> createStructure(JSValuePtr prototype) 
+        { 
+            return Structure::create(prototype, TypeInfo(ObjectType, ImplementsHasInstance)); 
+        }
+
+    private:
+        virtual const ClassInfo* classInfo() const { return &info; }
+
+        virtual ConstructType getConstructData(ConstructData&);
+        virtual CallType getCallData(CallData&);
+
+        static JSValuePtr argumentsGetter(ExecState*, const Identifier&, const PropertySlot&);
+        static JSValuePtr callerGetter(ExecState*, const Identifier&, const PropertySlot&);
+        static JSValuePtr lengthGetter(ExecState*, const Identifier&, const PropertySlot&);
+
+        RefPtr<FunctionBodyNode> m_body;
+        ScopeChain m_scopeChain;
+    };
+
+    JSFunction* asFunction(JSValuePtr);
+
+    inline JSFunction* asFunction(JSValuePtr value)
+    {
+        ASSERT(asObject(value)->inherits(&JSFunction::info));
+        return static_cast<JSFunction*>(asObject(value));
+    }
+
+} // namespace JSC
+
+#endif // JSFunction_h