#ifndef JSFunction_h
#define JSFunction_h
-#include "JSObjectWithGlobalObject.h"
+#include "InternalFunction.h"
+#include "JSDestructibleObject.h"
+#include "JSScope.h"
+#include "ObjectAllocationProfile.h"
+#include "Watchpoint.h"
namespace JSC {
class FunctionPrototype;
class JSActivation;
class JSGlobalObject;
+ class LLIntOffsetsExtractor;
class NativeExecutable;
- class VPtrHackExecutable;
+ class SourceCode;
+ namespace DFG {
+ class SpeculativeJIT;
+ class JITCompiler;
+ }
- EncodedJSValue JSC_HOST_CALL callHostFunctionAsConstructor(ExecState*);
+ JS_EXPORT_PRIVATE EncodedJSValue JSC_HOST_CALL callHostFunctionAsConstructor(ExecState*);
- class JSFunction : public JSObjectWithGlobalObject {
+ JS_EXPORT_PRIVATE String getCalculatedDisplayName(CallFrame*, JSObject*);
+
+ class JSFunction : public JSDestructibleObject {
friend class JIT;
- friend class JSGlobalData;
-
- typedef JSObjectWithGlobalObject Base;
+ friend class DFG::SpeculativeJIT;
+ friend class DFG::JITCompiler;
+ friend class VM;
public:
- JSFunction(ExecState*, JSGlobalObject*, Structure*, int length, const Identifier&, NativeFunction);
- JSFunction(ExecState*, JSGlobalObject*, Structure*, int length, const Identifier&, NativeExecutable*);
- JSFunction(ExecState*, FunctionExecutable*, ScopeChainNode*);
- virtual ~JSFunction();
+ typedef JSDestructibleObject Base;
- const UString& name(ExecState*);
- const UString displayName(ExecState*);
- const UString calculatedDisplayName(ExecState*);
+ JS_EXPORT_PRIVATE static JSFunction* create(ExecState*, JSGlobalObject*, int length, const String& name, NativeFunction, Intrinsic = NoIntrinsic, NativeFunction nativeConstructor = callHostFunctionAsConstructor);
- ScopeChainNode* scope()
+ static JSFunction* create(ExecState* exec, FunctionExecutable* executable, JSScope* scope)
+ {
+ VM& vm = exec->vm();
+ JSFunction* function = new (NotNull, allocateCell<JSFunction>(vm.heap)) JSFunction(vm, executable, scope);
+ ASSERT(function->structure()->globalObject());
+ function->finishCreation(vm);
+ return function;
+ }
+
+ static void destroy(JSCell*);
+
+ JS_EXPORT_PRIVATE String name(ExecState*);
+ JS_EXPORT_PRIVATE String displayName(ExecState*);
+ const String calculatedDisplayName(ExecState*);
+
+ JSScope* scope()
{
ASSERT(!isHostFunctionNonInline());
- return m_scopeChain.get();
+ return m_scope.get();
}
- void setScope(JSGlobalData& globalData, ScopeChainNode* scopeChain)
+ // This method may be called for host functins, in which case it
+ // will return an arbitrary value. This should only be used for
+ // optimized paths in which the return value does not matter for
+ // host functions, and checking whether the function is a host
+ // function is deemed too expensive.
+ JSScope* scopeUnchecked()
+ {
+ return m_scope.get();
+ }
+ void setScope(VM& vm, JSScope* scope)
{
ASSERT(!isHostFunctionNonInline());
- m_scopeChain.set(globalData, this, scopeChain);
+ m_scope.set(vm, this, scope);
}
ExecutableBase* executable() const { return m_executable.get(); }
inline bool isHostFunction() const;
FunctionExecutable* jsExecutable() const;
+ JS_EXPORT_PRIVATE const SourceCode* sourceCode() const;
+
static JS_EXPORTDATA const ClassInfo s_info;
- static Structure* createStructure(JSGlobalData& globalData, JSValue prototype)
- {
- return Structure::create(globalData, prototype, TypeInfo(ObjectType, StructureFlags), AnonymousSlotCount, &s_info);
+ static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
+ {
+ ASSERT(globalObject);
+ return Structure::create(vm, globalObject, prototype, TypeInfo(JSFunctionType, StructureFlags), &s_info);
}
NativeFunction nativeFunction();
+ NativeFunction nativeConstructor();
+
+ static ConstructType getConstructData(JSCell*, ConstructData&);
+ static CallType getCallData(JSCell*, CallData&);
- virtual ConstructType getConstructData(ConstructData&);
- virtual CallType getCallData(CallData&);
+ static inline ptrdiff_t offsetOfScopeChain()
+ {
+ return OBJECT_OFFSETOF(JSFunction, m_scope);
+ }
+
+ static inline ptrdiff_t offsetOfExecutable()
+ {
+ return OBJECT_OFFSETOF(JSFunction, m_executable);
+ }
+
+ static inline ptrdiff_t offsetOfAllocationProfile()
+ {
+ return OBJECT_OFFSETOF(JSFunction, m_allocationProfile);
+ }
+
+ ObjectAllocationProfile* allocationProfile(ExecState* exec, unsigned inlineCapacity)
+ {
+ if (UNLIKELY(m_allocationProfile.isNull()))
+ return createAllocationProfile(exec, inlineCapacity);
+ return &m_allocationProfile;
+ }
+
+ ObjectAllocationProfile* tryGetAllocationProfile()
+ {
+ if (m_allocationProfile.isNull())
+ return 0;
+ if (m_allocationProfileWatchpoint.hasBeenInvalidated())
+ return 0;
+ return &m_allocationProfile;
+ }
+
+ void addAllocationProfileWatchpoint(Watchpoint* watchpoint)
+ {
+ ASSERT(tryGetAllocationProfile());
+ m_allocationProfileWatchpoint.add(watchpoint);
+ }
protected:
const static unsigned StructureFlags = OverridesGetOwnPropertySlot | ImplementsHasInstance | OverridesVisitChildren | OverridesGetPropertyNames | JSObject::StructureFlags;
- private:
- explicit JSFunction(VPtrStealingHackType);
+ JS_EXPORT_PRIVATE JSFunction(ExecState*, JSGlobalObject*, Structure*);
+ JSFunction(VM&, FunctionExecutable*, JSScope*);
+
+ void finishCreation(ExecState*, NativeExecutable*, int length, const String& name);
+ using Base::finishCreation;
- bool isHostFunctionNonInline() const;
+ ObjectAllocationProfile* createAllocationProfile(ExecState*, size_t inlineCapacity);
- 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);
+ static bool getOwnPropertySlot(JSCell*, ExecState*, PropertyName, PropertySlot&);
+ static bool getOwnPropertyDescriptor(JSObject*, ExecState*, PropertyName, PropertyDescriptor&);
+ static void getOwnNonIndexPropertyNames(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode = ExcludeDontEnumProperties);
+ static bool defineOwnProperty(JSObject*, ExecState*, PropertyName, PropertyDescriptor&, bool shouldThrow);
- virtual void visitChildren(SlotVisitor&);
+ static void put(JSCell*, ExecState*, PropertyName, JSValue, PutPropertySlot&);
- static JSValue argumentsGetter(ExecState*, JSValue, const Identifier&);
- static JSValue callerGetter(ExecState*, JSValue, const Identifier&);
- static JSValue lengthGetter(ExecState*, JSValue, const Identifier&);
+ static bool deleteProperty(JSCell*, ExecState*, PropertyName);
- WriteBarrier<ExecutableBase> m_executable;
- WriteBarrier<ScopeChainNode> m_scopeChain;
- };
+ static void visitChildren(JSCell*, SlotVisitor&);
+
+ private:
+ friend class LLIntOffsetsExtractor;
+
+ JS_EXPORT_PRIVATE bool isHostFunctionNonInline() const;
- JSFunction* asFunction(JSValue);
+ static JSValue argumentsGetter(ExecState*, JSValue, PropertyName);
+ static JSValue callerGetter(ExecState*, JSValue, PropertyName);
+ static JSValue lengthGetter(ExecState*, JSValue, PropertyName);
+ static JSValue nameGetter(ExecState*, JSValue, PropertyName);
- inline JSFunction* asFunction(JSValue value)
- {
- ASSERT(asObject(value)->inherits(&JSFunction::s_info));
- return static_cast<JSFunction*>(asObject(value));
- }
+ WriteBarrier<ExecutableBase> m_executable;
+ WriteBarrier<JSScope> m_scope;
+ ObjectAllocationProfile m_allocationProfile;
+ InlineWatchpointSet m_allocationProfileWatchpoint;
+ };
} // namespace JSC
projects / apple / javascriptcore.git / blobdiff