WebKit之binding案例分析（testMediaQueryListListener.idl）

## testMediaQueryListListener.idl

module test {    interface TestMediaQueryListListener {        void method(in MediaQueryListListener listener);    };}

## JSTestMediaQueryListListener.h

#ifndef JSTestMediaQueryListListener_h#define JSTestMediaQueryListListener_h#include "JSDOMBinding.h"#include <runtime/JSGlobalObject.h>#include <runtime/JSObjectWithGlobalObject.h>#include <runtime/ObjectPrototype.h>namespace WebCore {class TestMediaQueryListListener;class JSTestMediaQueryListListener : public DOMObjectWithGlobalPointer {    typedef DOMObjectWithGlobalPointer Base;public:    JSTestMediaQueryListListener(NonNullPassRefPtr<JSC::Structure>, JSDOMGlobalObject*, PassRefPtr<TestMediaQueryListListener>);    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*);    TestMediaQueryListListener* impl() const { return m_impl.get(); }private:    RefPtr<TestMediaQueryListListener> m_impl;protected:    static const unsigned StructureFlags = JSC::OverridesGetOwnPropertySlot | Base::StructureFlags;};JSC::JSValue toJS(JSC::ExecState*, JSDOMGlobalObject*, TestMediaQueryListListener*);TestMediaQueryListListener* toTestMediaQueryListListener(JSC::JSValue);class JSTestMediaQueryListListenerPrototype : public JSC::JSObjectWithGlobalObject {    typedef JSC::JSObjectWithGlobalObject Base;public:    static JSC::JSObject* self(JSC::ExecState*, JSC::JSGlobalObject*);    static const JSC::ClassInfo s_info;    virtual bool getOwnPropertySlot(JSC::ExecState*, const JSC::Identifier&, JSC::PropertySlot&);    virtual bool getOwnPropertyDescriptor(JSC::ExecState*, const JSC::Identifier&, JSC::PropertyDescriptor&);    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);    }    JSTestMediaQueryListListenerPrototype(JSC::JSGlobalObject* globalObject, NonNullPassRefPtr<JSC::Structure> structure) : JSC::JSObjectWithGlobalObject(globalObject, structure) { }protected:    static const unsigned StructureFlags = JSC::OverridesGetOwnPropertySlot | Base::StructureFlags;};// FunctionsJSC::EncodedJSValue JSC_HOST_CALL jsTestMediaQueryListListenerPrototypeFunctionMethod(JSC::ExecState*);// AttributesJSC::JSValue jsTestMediaQueryListListenerConstructor(JSC::ExecState*, JSC::JSValue, const JSC::Identifier&);} // namespace WebCore#endif

## JSTestMediaQueryListListener.cpp

#include "config.h"#include "JSTestMediaQueryListListener.h"#include "ExceptionCode.h"#include "JSDOMBinding.h"#include "MediaQueryListListener.h"#include "TestMediaQueryListListener.h"#include <runtime/Error.h>#include <wtf/GetPtr.h>using namespace JSC;namespace WebCore {ASSERT_CLASS_FITS_IN_CELL(JSTestMediaQueryListListener);/* Hash table */#if ENABLE(JIT)#define THUNK_GENERATOR(generator) , generator#else#define THUNK_GENERATOR(generator)#endifstatic const HashTableValue JSTestMediaQueryListListenerTableValues[2] ={    { "constructor", DontEnum | ReadOnly, (intptr_t)static_cast<PropertySlot::GetValueFunc>(jsTestMediaQueryListListenerConstructor), (intptr_t)0 THUNK_GENERATOR(0) },    { 0, 0, 0, 0 THUNK_GENERATOR(0) }};#undef THUNK_GENERATORstatic JSC_CONST_HASHTABLE HashTable JSTestMediaQueryListListenerTable = { 2, 1, JSTestMediaQueryListListenerTableValues, 0 };/* Hash table for constructor */#if ENABLE(JIT)#define THUNK_GENERATOR(generator) , generator#else#define THUNK_GENERATOR(generator)#endifstatic const HashTableValue JSTestMediaQueryListListenerConstructorTableValues[1] ={    { 0, 0, 0, 0 THUNK_GENERATOR(0) }};#undef THUNK_GENERATORstatic JSC_CONST_HASHTABLE HashTable JSTestMediaQueryListListenerConstructorTable = { 1, 0, JSTestMediaQueryListListenerConstructorTableValues, 0 };class JSTestMediaQueryListListenerConstructor : public DOMConstructorObject {public:    JSTestMediaQueryListListenerConstructor(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;};const ClassInfo JSTestMediaQueryListListenerConstructor::s_info = { "TestMediaQueryListListenerConstructor", &DOMConstructorObject::s_info, &JSTestMediaQueryListListenerConstructorTable, 0 };JSTestMediaQueryListListenerConstructor::JSTestMediaQueryListListenerConstructor(ExecState* exec, JSDOMGlobalObject* globalObject)    : DOMConstructorObject(JSTestMediaQueryListListenerConstructor::createStructure(globalObject->globalData(), globalObject->objectPrototype()), globalObject){    ASSERT(inherits(&s_info));    putDirect(exec->globalData(), exec->propertyNames().prototype, JSTestMediaQueryListListenerPrototype::self(exec, globalObject), DontDelete | ReadOnly);}bool JSTestMediaQueryListListenerConstructor::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot& slot){    return getStaticValueSlot<JSTestMediaQueryListListenerConstructor, DOMObject>(exec, &JSTestMediaQueryListListenerConstructorTable, this, propertyName, slot);}bool JSTestMediaQueryListListenerConstructor::getOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor){    return getStaticValueDescriptor<JSTestMediaQueryListListenerConstructor, DOMObject>(exec, &JSTestMediaQueryListListenerConstructorTable, this, propertyName, descriptor);}/* Hash table for prototype */#if ENABLE(JIT)#define THUNK_GENERATOR(generator) , generator#else#define THUNK_GENERATOR(generator)#endifstatic const HashTableValue JSTestMediaQueryListListenerPrototypeTableValues[2] ={    { "method", DontDelete | Function, (intptr_t)static_cast<NativeFunction>(jsTestMediaQueryListListenerPrototypeFunctionMethod), (intptr_t)1 THUNK_GENERATOR(0) },    { 0, 0, 0, 0 THUNK_GENERATOR(0) }};#undef THUNK_GENERATORstatic JSC_CONST_HASHTABLE HashTable JSTestMediaQueryListListenerPrototypeTable = { 2, 1, JSTestMediaQueryListListenerPrototypeTableValues, 0 };const ClassInfo JSTestMediaQueryListListenerPrototype::s_info = { "TestMediaQueryListListenerPrototype", &JSC::JSObjectWithGlobalObject::s_info, &JSTestMediaQueryListListenerPrototypeTable, 0 };JSObject* JSTestMediaQueryListListenerPrototype::self(ExecState* exec, JSGlobalObject* globalObject){    return getDOMPrototype<JSTestMediaQueryListListener>(exec, globalObject);}bool JSTestMediaQueryListListenerPrototype::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot& slot){    return getStaticFunctionSlot<JSObject>(exec, &JSTestMediaQueryListListenerPrototypeTable, this, propertyName, slot);}bool JSTestMediaQueryListListenerPrototype::getOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor){    return getStaticFunctionDescriptor<JSObject>(exec, &JSTestMediaQueryListListenerPrototypeTable, this, propertyName, descriptor);}const ClassInfo JSTestMediaQueryListListener::s_info = { "TestMediaQueryListListener", &DOMObjectWithGlobalPointer::s_info, &JSTestMediaQueryListListenerTable, 0 };JSTestMediaQueryListListener::JSTestMediaQueryListListener(NonNullPassRefPtr<Structure> structure, JSDOMGlobalObject* globalObject, PassRefPtr<TestMediaQueryListListener> impl)    : DOMObjectWithGlobalPointer(structure, globalObject)    , m_impl(impl){    ASSERT(inherits(&s_info));}JSObject* JSTestMediaQueryListListener::createPrototype(ExecState* exec, JSGlobalObject* globalObject){    return new (exec) JSTestMediaQueryListListenerPrototype(globalObject, JSTestMediaQueryListListenerPrototype::createStructure(globalObject->globalData(), globalObject->objectPrototype()));}bool JSTestMediaQueryListListener::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot& slot){    return getStaticValueSlot<JSTestMediaQueryListListener, Base>(exec, &JSTestMediaQueryListListenerTable, this, propertyName, slot);}bool JSTestMediaQueryListListener::getOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor){    return getStaticValueDescriptor<JSTestMediaQueryListListener, Base>(exec, &JSTestMediaQueryListListenerTable, this, propertyName, descriptor);}JSValue jsTestMediaQueryListListenerConstructor(ExecState* exec, JSValue slotBase, const Identifier&){    JSTestMediaQueryListListener* domObject = static_cast<JSTestMediaQueryListListener*>(asObject(slotBase));    return JSTestMediaQueryListListener::getConstructor(exec, domObject->globalObject());}JSValue JSTestMediaQueryListListener::getConstructor(ExecState* exec, JSGlobalObject* globalObject){    return getDOMConstructor<JSTestMediaQueryListListenerConstructor>(exec, static_cast<JSDOMGlobalObject*>(globalObject));}EncodedJSValue JSC_HOST_CALL jsTestMediaQueryListListenerPrototypeFunctionMethod(ExecState* exec){    JSValue thisValue = exec->hostThisValue();    if (!thisValue.inherits(&JSTestMediaQueryListListener::s_info))        return throwVMTypeError(exec);    JSTestMediaQueryListListener* castedThis = static_cast<JSTestMediaQueryListListener*>(asObject(thisValue));    TestMediaQueryListListener* imp = static_cast<TestMediaQueryListListener*>(castedThis->impl());    RefPtr<MediaQueryListListener> listener(MediaQueryListListener::create(ScriptValue(exec->globalData(), exec->argument(0))));    if (exec->hadException())        return JSValue::encode(jsUndefined());    imp->method(listener);    return JSValue::encode(jsUndefined());}JSC::JSValue toJS(JSC::ExecState* exec, JSDOMGlobalObject* globalObject, TestMediaQueryListListener* object){    return getDOMObjectWrapper<JSTestMediaQueryListListener>(exec, globalObject, object);}TestMediaQueryListListener* toTestMediaQueryListListener(JSC::JSValue value){    return value.inherits(&JSTestMediaQueryListListener::s_info) ? static_cast<JSTestMediaQueryListListener*>(asObject(value))->impl() : 0;}}