WebKit之binding分析案例（testInterface.idl）

## TestInterface.idl

// This IDL file is for testing the bindings code generator and for tracking// changes in its ouput.module test {    interface [        Conditional=Condition1|Condition2,        CanBeConstructed,        CallWith=ScriptExecutionContext    ] TestInterface {    };}

## JSTestInterface.idl

#ifndef JSTestInterface_h#define JSTestInterface_h#if ENABLE(Condition1) || ENABLE(Condition2)#include "JSDOMBinding.h"#include <runtime/JSGlobalObject.h>#include <runtime/JSObjectWithGlobalObject.h>#include <runtime/ObjectPrototype.h>namespace WebCore {class TestInterface;class JSTestInterface : public DOMObjectWithGlobalPointer {    typedef DOMObjectWithGlobalPointer Base;public:    JSTestInterface(NonNullPassRefPtr<JSC::Structure>, JSDOMGlobalObject*, PassRefPtr<TestInterface>);    static JSC::JSObject* createPrototype(JSC::ExecState*, JSC::JSGlobalObject*);    virtual bool getOwnPropertySlot(JSC::ExecState*, const JSC::Identifier& propertyName, JSC::PropertySlot&);    virtual bool getOwnPropertyDescriptor(JSC::ExecState*, const JSC::Identifier& propertyName, JSC::PropertyDescriptor&);    static const JSC::ClassInfo s_info;    static PassRefPtr<JSC::Structure> createStructure(JSC::JSGlobalData& globalData, JSC::JSValue prototype)    {        return JSC::Structure::create(globalData, prototype, JSC::TypeInfo(JSC::ObjectType, StructureFlags), AnonymousSlotCount, &s_info);    }    static JSC::JSValue getConstructor(JSC::ExecState*, JSC::JSGlobalObject*);    TestInterface* impl() const { return m_impl.get(); }private:    RefPtr<TestInterface> m_impl;protected:    static const unsigned StructureFlags = JSC::OverridesGetOwnPropertySlot | Base::StructureFlags;};JSC::JSValue toJS(JSC::ExecState*, JSDOMGlobalObject*, TestInterface*);TestInterface* toTestInterface(JSC::JSValue);class JSTestInterfacePrototype : public JSC::JSObjectWithGlobalObject {    typedef JSC::JSObjectWithGlobalObject Base;public:    static JSC::JSObject* self(JSC::ExecState*, JSC::JSGlobalObject*);    static const JSC::ClassInfo s_info;    static PassRefPtr<JSC::Structure> createStructure(JSC::JSGlobalData& globalData, JSC::JSValue prototype)    {        return JSC::Structure::create(globalData, prototype, JSC::TypeInfo(JSC::ObjectType, StructureFlags), AnonymousSlotCount, &s_info);    }    JSTestInterfacePrototype(JSC::JSGlobalObject* globalObject, NonNullPassRefPtr<JSC::Structure> structure) : JSC::JSObjectWithGlobalObject(globalObject, structure) { }protected:    static const unsigned StructureFlags = Base::StructureFlags;};// AttributesJSC::JSValue jsTestInterfaceConstructor(JSC::ExecState*, JSC::JSValue, const JSC::Identifier&);} // namespace WebCore#endif // ENABLE(Condition1) || ENABLE(Condition2)#endif

## JSTestInterface.cpp

#include "config.h"#if ENABLE(Condition1) || ENABLE(Condition2)#include "JSTestInterface.h"#include "TestInterface.h"#include <wtf/GetPtr.h>using namespace JSC;namespace WebCore {ASSERT_CLASS_FITS_IN_CELL(JSTestInterface);/* Hash table */#if ENABLE(JIT)#define THUNK_GENERATOR(generator) , generator#else#define THUNK_GENERATOR(generator)#endifstatic const HashTableValue JSTestInterfaceTableValues[2] ={    { "constructor", DontEnum | ReadOnly, (intptr_t)static_cast<PropertySlot::GetValueFunc>(jsTestInterfaceConstructor), (intptr_t)0 THUNK_GENERATOR(0) },    { 0, 0, 0, 0 THUNK_GENERATOR(0) }};#undef THUNK_GENERATORstatic JSC_CONST_HASHTABLE HashTable JSTestInterfaceTable = { 2, 1, JSTestInterfaceTableValues, 0 };/* Hash table for constructor */#if ENABLE(JIT)#define THUNK_GENERATOR(generator) , generator#else#define THUNK_GENERATOR(generator)#endifstatic const HashTableValue JSTestInterfaceConstructorTableValues[1] ={    { 0, 0, 0, 0 THUNK_GENERATOR(0) }};#undef THUNK_GENERATORstatic JSC_CONST_HASHTABLE HashTable JSTestInterfaceConstructorTable = { 1, 0, JSTestInterfaceConstructorTableValues, 0 };class JSTestInterfaceConstructor : public DOMConstructorObject {public:    JSTestInterfaceConstructor(JSC::ExecState*, JSDOMGlobalObject*);    virtual bool getOwnPropertySlot(JSC::ExecState*, const JSC::Identifier&, JSC::PropertySlot&);    virtual bool getOwnPropertyDescriptor(JSC::ExecState*, const JSC::Identifier&, JSC::PropertyDescriptor&);    static const JSC::ClassInfo s_info;    static PassRefPtr<JSC::Structure> createStructure(JSC::JSGlobalData& globalData, JSC::JSValue prototype)    {        return JSC::Structure::create(globalData, prototype, JSC::TypeInfo(JSC::ObjectType, StructureFlags), AnonymousSlotCount, &s_info);    }protected:    static const unsigned StructureFlags = JSC::OverridesGetOwnPropertySlot | JSC::ImplementsHasInstance | DOMConstructorObject::StructureFlags;    static JSC::EncodedJSValue JSC_HOST_CALL constructJSTestInterface(JSC::ExecState*);    virtual JSC::ConstructType getConstructData(JSC::ConstructData&);};const ClassInfo JSTestInterfaceConstructor::s_info = { "TestInterfaceConstructor", &DOMConstructorObject::s_info, &JSTestInterfaceConstructorTable, 0 };JSTestInterfaceConstructor::JSTestInterfaceConstructor(ExecState* exec, JSDOMGlobalObject* globalObject)    : DOMConstructorObject(JSTestInterfaceConstructor::createStructure(globalObject->globalData(), globalObject->objectPrototype()), globalObject){    ASSERT(inherits(&s_info));    putDirect(exec->globalData(), exec->propertyNames().prototype, JSTestInterfacePrototype::self(exec, globalObject), DontDelete | ReadOnly);}bool JSTestInterfaceConstructor::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot& slot){    return getStaticValueSlot<JSTestInterfaceConstructor, DOMObject>(exec, &JSTestInterfaceConstructorTable, this, propertyName, slot);}bool JSTestInterfaceConstructor::getOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor){    return getStaticValueDescriptor<JSTestInterfaceConstructor, DOMObject>(exec, &JSTestInterfaceConstructorTable, this, propertyName, descriptor);}EncodedJSValue JSC_HOST_CALL JSTestInterfaceConstructor::constructJSTestInterface(ExecState* exec){    ScriptExecutionContext* context = static_cast<JSTestInterfaceConstructor*>(exec->callee())->scriptExecutionContext();    if (!context)        return throwVMError(exec, createReferenceError(exec, "Reference error"));    return JSValue::encode(asObject(toJS(exec, static_cast<JSTestInterfaceConstructor*>(exec->callee())->globalObject(), TestInterface::create(context))));}ConstructType JSTestInterfaceConstructor::getConstructData(ConstructData& constructData){    constructData.native.function = constructJSTestInterface;    return ConstructTypeHost;}/* Hash table for prototype */#if ENABLE(JIT)#define THUNK_GENERATOR(generator) , generator#else#define THUNK_GENERATOR(generator)#endifstatic const HashTableValue JSTestInterfacePrototypeTableValues[1] ={    { 0, 0, 0, 0 THUNK_GENERATOR(0) }};#undef THUNK_GENERATORstatic JSC_CONST_HASHTABLE HashTable JSTestInterfacePrototypeTable = { 1, 0, JSTestInterfacePrototypeTableValues, 0 };const ClassInfo JSTestInterfacePrototype::s_info = { "TestInterfacePrototype", &JSC::JSObjectWithGlobalObject::s_info, &JSTestInterfacePrototypeTable, 0 };JSObject* JSTestInterfacePrototype::self(ExecState* exec, JSGlobalObject* globalObject){    return getDOMPrototype<JSTestInterface>(exec, globalObject);}const ClassInfo JSTestInterface::s_info = { "TestInterface", &DOMObjectWithGlobalPointer::s_info, &JSTestInterfaceTable, 0 };JSTestInterface::JSTestInterface(NonNullPassRefPtr<Structure> structure, JSDOMGlobalObject* globalObject, PassRefPtr<TestInterface> impl)    : DOMObjectWithGlobalPointer(structure, globalObject)    , m_impl(impl){    ASSERT(inherits(&s_info));}JSObject* JSTestInterface::createPrototype(ExecState* exec, JSGlobalObject* globalObject){    return new (exec) JSTestInterfacePrototype(globalObject, JSTestInterfacePrototype::createStructure(globalObject->globalData(), globalObject->objectPrototype()));}bool JSTestInterface::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot& slot){    return getStaticValueSlot<JSTestInterface, Base>(exec, &JSTestInterfaceTable, this, propertyName, slot);}bool JSTestInterface::getOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor){    return getStaticValueDescriptor<JSTestInterface, Base>(exec, &JSTestInterfaceTable, this, propertyName, descriptor);}JSValue jsTestInterfaceConstructor(ExecState* exec, JSValue slotBase, const Identifier&){    JSTestInterface* domObject = static_cast<JSTestInterface*>(asObject(slotBase));    return JSTestInterface::getConstructor(exec, domObject->globalObject());}JSValue JSTestInterface::getConstructor(ExecState* exec, JSGlobalObject* globalObject){    return getDOMConstructor<JSTestInterfaceConstructor>(exec, static_cast<JSDOMGlobalObject*>(globalObject));}JSC::JSValue toJS(JSC::ExecState* exec, JSDOMGlobalObject* globalObject, TestInterface* object){    return getDOMObjectWrapper<JSTestInterface>(exec, globalObject, object);}TestInterface* toTestInterface(JSC::JSValue value){    return value.inherits(&JSTestInterface::s_info) ? static_cast<JSTestInterface*>(asObject(value))->impl() : 0;}}#endif // ENABLE(Condition1) || ENABLE(Condition2)