JavaScriptCore-903.tar.gz

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

diff --git a/runtime/JSFunction.h b/runtime/JSFunction.h
index b27e5157f766fef164745420d800e907c942936b..42fd62a4d16c4b673a7fff64416f6539f2d08b4a 100644 (file)
--- a/runtime/JSFunction.h
+++ b/runtime/JSFunction.h
@@ -24,112 +24,95 @@
 #ifndef JSFunction_h
 #define JSFunction_h
 
-#include "InternalFunction.h"
-#include "JSVariableObject.h"
-#include "SymbolTable.h"
-#include "Nodes.h"
-#include "JSObject.h"
+#include "JSObjectWithGlobalObject.h"
 
 namespace JSC {
 
-    class FunctionBodyNode;
+    class ExecutableBase;
+    class FunctionExecutable;
     class FunctionPrototype;
     class JSActivation;
     class JSGlobalObject;
+    class NativeExecutable;
+    class VPtrHackExecutable;
 
-    class JSFunction : public InternalFunction {
-        friend class JIT;
-        friend class VPtrSet;
+    EncodedJSValue JSC_HOST_CALL callHostFunctionAsConstructor(ExecState*);
 
-        typedef InternalFunction Base;
+    class JSFunction : public JSObjectWithGlobalObject {
+        friend class JIT;
+        friend class JSGlobalData;
 
-        JSFunction(PassRefPtr<Structure> structure)
-            : InternalFunction(structure)
-        {
-            clearScopeChain();
-        }
+        typedef JSObjectWithGlobalObject Base;
 
     public:
-        JSFunction(ExecState*, PassRefPtr<Structure>, int length, const Identifier&, NativeFunction);
-        JSFunction(ExecState*, const Identifier&, FunctionBodyNode*, ScopeChainNode*);
-        ~JSFunction();
-
-        virtual bool getOwnPropertySlot(ExecState*, const Identifier&, PropertySlot&);
-        virtual void put(ExecState*, const Identifier& propertyName, JSValue, PutPropertySlot&);
-        virtual bool deleteProperty(ExecState*, const Identifier& propertyName);
+        JSFunction(ExecState*, JSGlobalObject*, Structure*, int length, const Identifier&, NativeFunction);
+        JSFunction(ExecState*, JSGlobalObject*, Structure*, int length, const Identifier&, NativeExecutable*);
+        JSFunction(ExecState*, FunctionExecutable*, ScopeChainNode*);
+        virtual ~JSFunction();
 
-        JSObject* construct(ExecState*, const ArgList&);
-        JSValue call(ExecState*, JSValue thisValue, const ArgList&);
+        const UString& name(ExecState*);
+        const UString displayName(ExecState*);
+        const UString calculatedDisplayName(ExecState*);
 
-        void setScope(const ScopeChain& scopeChain) { setScopeChain(scopeChain); }
-        ScopeChain& scope() { return scopeChain(); }
+        ScopeChainNode* scope()
+        {
+            ASSERT(!isHostFunctionNonInline());
+            return m_scopeChain.get();
+        }
+        void setScope(JSGlobalData& globalData, ScopeChainNode* scopeChain)
+        {
+            ASSERT(!isHostFunctionNonInline());
+            m_scopeChain.set(globalData, this, scopeChain);
+        }
 
-        void setBody(FunctionBodyNode* body) { m_body = body; }
-        void setBody(PassRefPtr<FunctionBodyNode> body) { m_body = body; }
-        FunctionBodyNode* body() const { return m_body.get(); }
+        ExecutableBase* executable() const { return m_executable.get(); }
 
-        virtual void mark();
+        // To call either of these methods include Executable.h
+        inline bool isHostFunction() const;
+        FunctionExecutable* jsExecutable() const;
 
-        static JS_EXPORTDATA const ClassInfo info;
+        static JS_EXPORTDATA const ClassInfo s_info;
 
-        static PassRefPtr<Structure> createStructure(JSValue prototype) 
+        static Structure* createStructure(JSGlobalData& globalData, JSValue prototype) 
         { 
-            return Structure::create(prototype, TypeInfo(ObjectType, ImplementsHasInstance)); 
+            return Structure::create(globalData, prototype, TypeInfo(ObjectType, StructureFlags), AnonymousSlotCount, &s_info); 
         }
 
-#if ENABLE(JIT)
-        bool isHostFunction() const { return m_body && m_body->isHostFunction(); }
-#else
-        bool isHostFunction() const { return false; }
-#endif
-        NativeFunction nativeFunction()
-        {
-            return *reinterpret_cast<NativeFunction*>(m_data);
-        }
+        NativeFunction nativeFunction();
 
         virtual ConstructType getConstructData(ConstructData&);
         virtual CallType getCallData(CallData&);
 
+    protected:
+        const static unsigned StructureFlags = OverridesGetOwnPropertySlot | ImplementsHasInstance | OverridesVisitChildren | OverridesGetPropertyNames | JSObject::StructureFlags;
+
     private:
-        virtual const ClassInfo* classInfo() const { return &info; }
+        explicit JSFunction(VPtrStealingHackType);
 
-        static JSValue argumentsGetter(ExecState*, const Identifier&, const PropertySlot&);
-        static JSValue callerGetter(ExecState*, const Identifier&, const PropertySlot&);
-        static JSValue lengthGetter(ExecState*, const Identifier&, const PropertySlot&);
+        bool isHostFunctionNonInline() const;
 
-        RefPtr<FunctionBodyNode> m_body;
-        ScopeChain& scopeChain()
-        {
-            ASSERT(!isHostFunction());
-            return *reinterpret_cast<ScopeChain*>(m_data);
-        }
-        void clearScopeChain()
-        {
-            ASSERT(!isHostFunction());
-            new (m_data) ScopeChain(NoScopeChain());
-        }
-        void setScopeChain(ScopeChainNode* sc)
-        {
-            ASSERT(!isHostFunction());
-            new (m_data) ScopeChain(sc);
-        }
-        void setScopeChain(const ScopeChain& sc)
-        {
-            ASSERT(!isHostFunction());
-            *reinterpret_cast<ScopeChain*>(m_data) = sc;
-        }
-        void setNativeFunction(NativeFunction func)
-        {
-            *reinterpret_cast<NativeFunction*>(m_data) = func;
-        }
-        unsigned char m_data[sizeof(void*)];
+        virtual void preventExtensions(JSGlobalData&);
+        virtual bool getOwnPropertySlot(ExecState*, const Identifier&, PropertySlot&);
+        virtual bool getOwnPropertyDescriptor(ExecState*, const Identifier&, PropertyDescriptor&);
+        virtual void getOwnPropertyNames(ExecState*, PropertyNameArray&, EnumerationMode mode = ExcludeDontEnumProperties);
+        virtual void put(ExecState*, const Identifier& propertyName, JSValue, PutPropertySlot&);
+        virtual bool deleteProperty(ExecState*, const Identifier& propertyName);
+
+        virtual void visitChildren(SlotVisitor&);
+
+        static JSValue argumentsGetter(ExecState*, JSValue, const Identifier&);
+        static JSValue callerGetter(ExecState*, JSValue, const Identifier&);
+        static JSValue lengthGetter(ExecState*, JSValue, const Identifier&);
+
+        WriteBarrier<ExecutableBase> m_executable;
+        WriteBarrier<ScopeChainNode> m_scopeChain;
     };
 
     JSFunction* asFunction(JSValue);
 
     inline JSFunction* asFunction(JSValue value)
     {
-        ASSERT(asObject(value)->inherits(&JSFunction::info));
+        ASSERT(asObject(value)->inherits(&JSFunction::s_info));
         return static_cast<JSFunction*>(asObject(value));
     }