/*
* Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
- * Copyright (C) 2003, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
+ * Copyright (C) 2003, 2006, 2007, 2008, 2009, 2015 Apple Inc. All rights reserved.
* Copyright (C) 2007 Cameron Zwarich (cwzwarich@uwaterloo.ca)
* Copyright (C) 2007 Maks Orlovich
*
#ifndef JSFunction_h
#define JSFunction_h
+#include "FunctionRareData.h"
#include "InternalFunction.h"
-#include "JSObject.h"
+#include "JSCallee.h"
+#include "JSScope.h"
+#include "Watchpoint.h"
namespace JSC {
- class ExecutableBase;
- class FunctionExecutable;
- class FunctionPrototype;
- class JSActivation;
- class JSGlobalObject;
- class LLIntOffsetsExtractor;
- class NativeExecutable;
- class SourceCode;
- namespace DFG {
- class SpeculativeJIT;
- class JITCompiler;
- }
+class ExecutableBase;
+class FunctionExecutable;
+class FunctionPrototype;
+class JSLexicalEnvironment;
+class JSGlobalObject;
+class LLIntOffsetsExtractor;
+class NativeExecutable;
+class SourceCode;
+namespace DFG {
+class SpeculativeJIT;
+class JITCompiler;
+}
+
+typedef std::function<EncodedJSValue (ExecState*)> NativeStdFunction;
+
+JS_EXPORT_PRIVATE EncodedJSValue JSC_HOST_CALL callHostFunctionAsConstructor(ExecState*);
+
+JS_EXPORT_PRIVATE String getCalculatedDisplayName(CallFrame*, JSObject*);
+
+class JSFunction : public JSCallee {
+ friend class JIT;
+ friend class DFG::SpeculativeJIT;
+ friend class DFG::JITCompiler;
+ friend class VM;
+
+public:
+ typedef JSCallee Base;
+ const static unsigned StructureFlags = Base::StructureFlags | OverridesGetOwnPropertySlot | OverridesGetPropertyNames;
- JS_EXPORT_PRIVATE EncodedJSValue JSC_HOST_CALL callHostFunctionAsConstructor(ExecState*);
+ static size_t allocationSize(size_t inlineCapacity)
+ {
+ ASSERT_UNUSED(inlineCapacity, !inlineCapacity);
+ return sizeof(JSFunction);
+ }
- JS_EXPORT_PRIVATE UString getCalculatedDisplayName(CallFrame*, JSObject*);
+ JS_EXPORT_PRIVATE static JSFunction* create(VM&, JSGlobalObject*, int length, const String& name, NativeFunction, Intrinsic = NoIntrinsic, NativeFunction nativeConstructor = callHostFunctionAsConstructor);
- class JSFunction : public JSNonFinalObject {
- friend class JIT;
- friend class DFG::SpeculativeJIT;
- friend class DFG::JITCompiler;
- friend class JSGlobalData;
-
- public:
- typedef JSNonFinalObject Base;
-
- JS_EXPORT_PRIVATE static JSFunction* create(ExecState*, JSGlobalObject*, int length, const Identifier& name, NativeFunction nativeFunction, Intrinsic = NoIntrinsic, NativeFunction nativeConstructor = callHostFunctionAsConstructor);
-
- static JSFunction* create(ExecState* exec, FunctionExecutable* executable, ScopeChainNode* scopeChain)
- {
- JSFunction* function = new (NotNull, allocateCell<JSFunction>(*exec->heap())) JSFunction(exec, executable, scopeChain);
- ASSERT(function->structure()->globalObject());
- function->finishCreation(exec, executable, scopeChain);
- return function;
- }
-
- JS_EXPORT_PRIVATE const UString& name(ExecState*);
- JS_EXPORT_PRIVATE const UString displayName(ExecState*);
- const UString calculatedDisplayName(ExecState*);
-
- ScopeChainNode* scope()
- {
- ASSERT(!isHostFunctionNonInline());
- return m_scopeChain.get();
- }
- // 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.
- ScopeChainNode* scopeUnchecked()
- {
- return m_scopeChain.get();
- }
- void setScope(JSGlobalData& globalData, ScopeChainNode* scopeChain)
- {
- ASSERT(!isHostFunctionNonInline());
- m_scopeChain.set(globalData, this, scopeChain);
- }
-
- ExecutableBase* executable() const { return m_executable.get(); }
-
- // To call either of these methods include Executable.h
- 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, JSGlobalObject* globalObject, JSValue prototype)
- {
- ASSERT(globalObject);
- return Structure::create(globalData, globalObject, prototype, TypeInfo(JSFunctionType, StructureFlags), &s_info);
- }
-
- NativeFunction nativeFunction();
- NativeFunction nativeConstructor();
-
- static ConstructType getConstructData(JSCell*, ConstructData&);
- static CallType getCallData(JSCell*, CallData&);
-
- static inline size_t offsetOfScopeChain()
- {
- return OBJECT_OFFSETOF(JSFunction, m_scopeChain);
- }
-
- static inline size_t offsetOfExecutable()
- {
- return OBJECT_OFFSETOF(JSFunction, m_executable);
- }
-
- protected:
- const static unsigned StructureFlags = OverridesGetOwnPropertySlot | ImplementsHasInstance | OverridesVisitChildren | OverridesGetPropertyNames | JSObject::StructureFlags;
-
- JS_EXPORT_PRIVATE JSFunction(ExecState*, JSGlobalObject*, Structure*);
- JSFunction(ExecState*, FunctionExecutable*, ScopeChainNode*);
-
- void finishCreation(ExecState*, NativeExecutable*, int length, const Identifier& name);
- void finishCreation(ExecState*, FunctionExecutable*, ScopeChainNode*);
-
- static bool getOwnPropertySlot(JSCell*, ExecState*, const Identifier&, PropertySlot&);
- static bool getOwnPropertyDescriptor(JSObject*, ExecState*, const Identifier&, PropertyDescriptor&);
- static void getOwnPropertyNames(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode = ExcludeDontEnumProperties);
- static bool defineOwnProperty(JSObject*, ExecState*, const Identifier& propertyName, PropertyDescriptor&, bool shouldThrow);
-
- static void put(JSCell*, ExecState*, const Identifier& propertyName, JSValue, PutPropertySlot&);
-
- static bool deleteProperty(JSCell*, ExecState*, const Identifier& propertyName);
-
- static void visitChildren(JSCell*, SlotVisitor&);
-
- private:
- friend class LLIntOffsetsExtractor;
-
- JS_EXPORT_PRIVATE bool isHostFunctionNonInline() const;
-
- 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;
- };
-
- inline bool JSValue::isFunction() const
+ static JSFunction* createWithInvalidatedReallocationWatchpoint(VM&, FunctionExecutable*, JSScope*);
+ JS_EXPORT_PRIVATE static JSFunction* create(VM&, JSGlobalObject*, int length, const String& name, NativeStdFunction&&, Intrinsic = NoIntrinsic, NativeFunction nativeConstructor = callHostFunctionAsConstructor);
+
+ static JSFunction* create(VM&, FunctionExecutable*, JSScope*);
+
+ static JSFunction* createBuiltinFunction(VM&, FunctionExecutable*, JSGlobalObject*);
+ static JSFunction* createBuiltinFunction(VM&, FunctionExecutable*, JSGlobalObject*, const String& name);
+
+ JS_EXPORT_PRIVATE String name(ExecState*);
+ JS_EXPORT_PRIVATE String displayName(ExecState*);
+ const String calculatedDisplayName(ExecState*);
+
+ ExecutableBase* executable() const { return m_executable.get(); }
+
+ // To call either of these methods include Executable.h
+ bool isHostFunction() const;
+ FunctionExecutable* jsExecutable() const;
+
+ JS_EXPORT_PRIVATE const SourceCode* sourceCode() const;
+
+ DECLARE_EXPORT_INFO;
+
+ static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
+ {
+ ASSERT(globalObject);
+ return Structure::create(vm, globalObject, prototype, TypeInfo(JSFunctionType, StructureFlags), info());
+ }
+
+ NativeFunction nativeFunction();
+ NativeFunction nativeConstructor();
+
+ static ConstructType getConstructData(JSCell*, ConstructData&);
+ static CallType getCallData(JSCell*, CallData&);
+
+ static inline ptrdiff_t offsetOfExecutable()
+ {
+ return OBJECT_OFFSETOF(JSFunction, m_executable);
+ }
+
+ static inline ptrdiff_t offsetOfRareData()
+ {
+ return OBJECT_OFFSETOF(JSFunction, m_rareData);
+ }
+
+ FunctionRareData* rareData(ExecState* exec, unsigned inlineCapacity)
+ {
+ if (UNLIKELY(!m_rareData))
+ return allocateAndInitializeRareData(exec, inlineCapacity);
+ if (UNLIKELY(!m_rareData->isInitialized()))
+ return initializeRareData(exec, inlineCapacity);
+ return m_rareData.get();
+ }
+
+ FunctionRareData* rareData()
{
- return isCell() && (asCell()->inherits(&JSFunction::s_info) || asCell()->inherits(&InternalFunction::s_info));
+ FunctionRareData* rareData = m_rareData.get();
+
+ // The JS thread may be concurrently creating the rare data
+ // If we see it, we want to ensure it has been properly created
+ WTF::loadLoadFence();
+
+ return rareData;
}
+ bool isHostOrBuiltinFunction() const;
+ bool isBuiltinFunction() const;
+ JS_EXPORT_PRIVATE bool isHostFunctionNonInline() const;
+ bool isClassConstructorFunction() const;
+
+protected:
+ JS_EXPORT_PRIVATE JSFunction(VM&, JSGlobalObject*, Structure*);
+ JSFunction(VM&, FunctionExecutable*, JSScope*);
+
+ void finishCreation(VM&, NativeExecutable*, int length, const String& name);
+ using Base::finishCreation;
+
+ FunctionRareData* allocateAndInitializeRareData(ExecState*, size_t inlineCapacity);
+ FunctionRareData* initializeRareData(ExecState*, size_t inlineCapacity);
+
+ static bool getOwnPropertySlot(JSObject*, ExecState*, PropertyName, PropertySlot&);
+ static void getOwnNonIndexPropertyNames(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode = EnumerationMode());
+ static bool defineOwnProperty(JSObject*, ExecState*, PropertyName, const PropertyDescriptor&, bool shouldThrow);
+
+ static void put(JSCell*, ExecState*, PropertyName, JSValue, PutPropertySlot&);
+
+ static bool deleteProperty(JSCell*, ExecState*, PropertyName);
+
+ static void visitChildren(JSCell*, SlotVisitor&);
+
+private:
+ static JSFunction* createImpl(VM& vm, FunctionExecutable* executable, JSScope* scope)
+ {
+ JSFunction* function = new (NotNull, allocateCell<JSFunction>(vm.heap)) JSFunction(vm, executable, scope);
+ ASSERT(function->structure()->globalObject());
+ function->finishCreation(vm);
+ return function;
+ }
+
+ friend class LLIntOffsetsExtractor;
+
+ static EncodedJSValue argumentsGetter(ExecState*, JSObject*, EncodedJSValue, PropertyName);
+ static EncodedJSValue callerGetter(ExecState*, JSObject*, EncodedJSValue, PropertyName);
+ static EncodedJSValue lengthGetter(ExecState*, JSObject*, EncodedJSValue, PropertyName);
+ static EncodedJSValue nameGetter(ExecState*, JSObject*, EncodedJSValue, PropertyName);
+
+ WriteBarrier<ExecutableBase> m_executable;
+ WriteBarrier<FunctionRareData> m_rareData;
+};
+
} // namespace JSC
#endif // JSFunction_h
projects / apple / javascriptcore.git / blobdiff