C++ (Cpp) JSValue::isEmpty示例

示例#1

文件： IteratorOperations.cpp 项目： wolfviking0/webcl-webkit

JSValue iteratorNext(ExecState* exec, IterationRecord iterationRecord, JSValue argument)
{
    VM& vm = exec->vm();
    auto scope = DECLARE_THROW_SCOPE(vm);

    JSValue iterator = iterationRecord.iterator;
    JSValue nextFunction = iterationRecord.nextMethod;

    CallData nextFunctionCallData;
    CallType nextFunctionCallType = getCallData(vm, nextFunction, nextFunctionCallData);
    if (nextFunctionCallType == CallType::None)
        return throwTypeError(exec, scope);

    MarkedArgumentBuffer nextFunctionArguments;
    if (!argument.isEmpty())
        nextFunctionArguments.append(argument);
    ASSERT(!nextFunctionArguments.hasOverflowed());
    JSValue result = call(exec, nextFunction, nextFunctionCallType, nextFunctionCallData, iterator, nextFunctionArguments);
    RETURN_IF_EXCEPTION(scope, JSValue());

    if (!result.isObject())
        return throwTypeError(exec, scope, "Iterator result interface is not an object."_s);

    return result;
}

示例#2

SpeculatedType speculationFromValue(JSValue value)
{
    if (value.isEmpty())
        return SpecEmpty;
    if (value.isInt32())
        return SpecInt32;
    if (value.isDouble()) {
        double number = value.asNumber();
        if (number == number) {
            int64_t asInt64 = static_cast<int64_t>(number);
            if (asInt64 == number && (asInt64 || !std::signbit(number))
                && asInt64 < (static_cast<int64_t>(1) << 47)
                && asInt64 >= -(static_cast<int64_t>(1) << 47)) {
                return SpecInt48AsDouble;
            }
            return SpecNonIntAsDouble;
        }
        return SpecDoubleNaN;
    }
    if (value.isCell())
        return speculationFromCell(value.asCell());
    if (value.isBoolean())
        return SpecBoolean;
    ASSERT(value.isUndefinedOrNull());
    return SpecOther;
}

示例#3

void setJSTestInterfaceConstructorSupplementalStaticAttr(ExecState* exec, JSObject*, JSValue value)
{
    UNUSED_PARAM(exec);
    const String& nativeValue(value.isEmpty() ? String() : value.toString(exec)->value(exec));
    if (exec->hadException())
        return;
    TestSupplemental::setSupplementalStaticAttr(nativeValue);
}

示例#4

文件： JSTestInterface.cpp 项目： boska/webkit

void setJSTestInterfaceConstructorImplementsStaticAttr(ExecState* exec, JSObject* /* baseObject */, EncodedJSValue, EncodedJSValue encodedValue)
{
    JSValue value = JSValue::decode(encodedValue);
    UNUSED_PARAM(exec);
    const String& nativeValue(value.isEmpty() ? String() : value.toString(exec)->value(exec));
    if (exec->hadException())
        return;
    TestInterface::setImplementsStaticAttr(nativeValue);
}

示例#5

文件： JSTestInterface.cpp 项目： ZeusbaseWeb/webkit

void setJSTestInterfaceImplementsStr2(ExecState* exec, JSObject* thisObject, JSValue value)
{
    UNUSED_PARAM(exec);
    JSTestInterface* castedThis = jsCast<JSTestInterface*>(thisObject);
    TestInterface& impl = castedThis->impl();
    const String& nativeValue(value.isEmpty() ? String() : value.toString(exec)->value(exec));
    if (exec->hadException())
        return;
    impl.setImplementsStr2(nativeValue);
}

示例#6

文件： JSTestTypedefs.cpp 项目： liudengyong/webkit

void setJSTestTypedefsStringAttrWithGetterException(ExecState* exec, JSObject* thisObject, JSValue value)
{
    UNUSED_PARAM(exec);
    JSTestTypedefs* castedThis = jsCast<JSTestTypedefs*>(thisObject);
    TestTypedefs& impl = castedThis->impl();
    const String& nativeValue(value.isEmpty() ? String() : value.toString(exec)->value(exec));
    if (exec->hadException())
        return;
    impl.setStringAttrWithGetterException(nativeValue);
}

示例#7

void setJSTestInterfaceSupplementalStr2(ExecState* exec, JSObject* thisObject, JSValue value)
{
    UNUSED_PARAM(exec);
    JSTestInterface* castedThis = jsCast<JSTestInterface*>(thisObject);
    TestInterface* impl = static_cast<TestInterface*>(castedThis->impl());
    const String& nativeValue(value.isEmpty() ? String() : value.toString(exec)->value(exec));
    if (exec->hadException())
        return;
    TestSupplemental::setSupplementalStr2(impl, nativeValue);
}

示例#8

文件： JSTextTrackCustom.cpp 项目： CannedFish/webkitgtk

void JSTextTrack::setLanguage(ExecState* exec, JSValue value)
{
    UNUSED_PARAM(exec);
#if ENABLE(MEDIA_SOURCE)
    const String& nativeValue(value.isEmpty() ? String() : value.toString(exec)->value(exec));
    if (exec->hadException())
        return;
    impl().setLanguage(nativeValue);
#else
    UNUSED_PARAM(value);
    return;
#endif
}

示例#9

JSValue JSHistory::state(ExecState *exec) const
{
    History* history = static_cast<History*>(impl());

    JSValue cachedValue = m_state.get();
    if (!cachedValue.isEmpty() && !history->stateChanged())
        return cachedValue;

    RefPtr<SerializedScriptValue> serialized = history->state();
    JSValue result = serialized ? serialized->deserialize(exec, globalObject(), 0) : jsNull();
    const_cast<JSHistory*>(this)->m_state.set(exec->vm(), this, result);
    return result;
}

示例#10

文件： JSTestTypedefs.cpp 项目： Happy-Ferret/webkit.js

void setJSTestTypedefsStringAttrWithGetterException(ExecState* exec, EncodedJSValue thisValue, EncodedJSValue encodedValue)
{
    JSValue value = JSValue::decode(encodedValue);
    UNUSED_PARAM(exec);
    JSTestTypedefs* castedThis = jsDynamicCast<JSTestTypedefs*>(JSValue::decode(thisValue));
    if (!castedThis) {
        throwVMTypeError(exec);
        return;
    }
    TestTypedefs& impl = castedThis->impl();
    const String& nativeValue(value.isEmpty() ? String() : value.toString(exec)->value(exec));
    if (exec->hadException())
        return;
    impl.setStringAttrWithGetterException(nativeValue);
}

示例#11

文件： JSTestInterface.cpp 项目： boska/webkit

void setJSTestInterfaceSupplementalStr2(ExecState* exec, JSObject* /* baseObject */, EncodedJSValue thisValue, EncodedJSValue encodedValue)
{
    JSValue value = JSValue::decode(encodedValue);
    UNUSED_PARAM(exec);
    JSTestInterface* castedThis = jsDynamicCast<JSTestInterface*>(JSValue::decode(thisValue));
    if (!castedThis) {
        throwVMTypeError(exec);
        return;
    }
    TestInterface& impl = castedThis->impl();
    const String& nativeValue(value.isEmpty() ? String() : value.toString(exec)->value(exec));
    if (exec->hadException())
        return;
    TestSupplemental::setSupplementalStr2(&impl, nativeValue);
}

示例#12

文件： JSDOMSettableTokenList.cpp 项目： Happy-Ferret/webkit.js

void setJSDOMSettableTokenListValue(ExecState* exec, EncodedJSValue thisValue, EncodedJSValue encodedValue)
{
    JSValue value = JSValue::decode(encodedValue);
    UNUSED_PARAM(exec);
    JSDOMSettableTokenList* castedThis = jsDynamicCast<JSDOMSettableTokenList*>(JSValue::decode(thisValue));
    if (!castedThis) {
        throwVMTypeError(exec);
        return;
    }
    DOMSettableTokenList& impl = castedThis->impl();
    const String& nativeValue(value.isEmpty() ? String() : value.toString(exec)->value(exec));
    if (exec->hadException())
        return;
    impl.setValue(nativeValue);
}

示例#13

文件： JSPopStateEventCustom.cpp 项目： cheekiatng/webkit

JSValue JSPopStateEvent::state(ExecState* exec) const
{
    JSValue cachedValue = m_state.get();
    if (!cachedValue.isEmpty()) {
        // We cannot use a cached object if we are in a different world than the one it was created in.
        if (!cachedValue.isObject() || &worldForDOMObject(cachedValue.getObject()) == &currentWorld(exec))
            return cachedValue;
        ASSERT_NOT_REACHED();
    }

    PopStateEvent& event = impl();

    if (!event.state().hasNoValue()) {
        // We need to make sure a PopStateEvent does not leak objects in its state property across isolated DOM worlds.
        // Ideally, we would check that the worlds have different privileges but that's not possible yet.
        JSValue state = event.state().jsValue();
        if (state.isObject() && &worldForDOMObject(state.getObject()) != &currentWorld(exec)) {
            if (RefPtr<SerializedScriptValue> serializedValue = event.trySerializeState(exec))
                state = serializedValue->deserialize(exec, globalObject(), nullptr);
            else
                state = jsNull();
        }

        return cacheState(exec, const_cast<JSPopStateEvent*>(this), state);
    }

    History* history = event.history();
    if (!history || !event.serializedState())
        return cacheState(exec, const_cast<JSPopStateEvent*>(this), jsNull());

    // There's no cached value from a previous invocation, nor a state value was provided by the
    // event, but there is a history object, so first we need to see if the state object has been
    // deserialized through the history object already.
    // The current history state object might've changed in the meantime, so we need to take care
    // of using the correct one, and always share the same deserialization with history.state.

    bool isSameState = history->isSameAsCurrentState(event.serializedState().get());
    JSValue result;

    if (isSameState) {
        JSHistory* jsHistory = jsCast<JSHistory*>(toJS(exec, globalObject(), history).asCell());
        result = jsHistory->state(exec);
    } else
        result = event.serializedState()->deserialize(exec, globalObject(), 0);

    return cacheState(exec, const_cast<JSPopStateEvent*>(this), result);
}

示例#14

void setJSAudioNodeChannelInterpretation(ExecState* exec, EncodedJSValue thisValue, EncodedJSValue encodedValue)
{
    JSValue value = JSValue::decode(encodedValue);
    UNUSED_PARAM(exec);
    JSAudioNode* castedThis = jsDynamicCast<JSAudioNode*>(JSValue::decode(thisValue));
    if (!castedThis) {
        throwVMTypeError(exec);
        return;
    }
    AudioNode& impl = castedThis->impl();
    ExceptionCode ec = 0;
    const String& nativeValue(value.isEmpty() ? String() : value.toString(exec)->value(exec));
    if (exec->hadException())
        return;
    impl.setChannelInterpretation(nativeValue, ec);
    setDOMException(exec, ec);
}

示例#15

文件： JSTestTypedefs.cpp 项目： feel2d/webkit

void setJSTestTypedefsStringAttrWithGetterException(ExecState* exec, JSObject* baseObject, EncodedJSValue thisValue, EncodedJSValue encodedValue)
{
    JSValue value = JSValue::decode(encodedValue);
    UNUSED_PARAM(baseObject);
    JSTestTypedefs* castedThis = jsDynamicCast<JSTestTypedefs*>(JSValue::decode(thisValue));
    if (UNLIKELY(!castedThis)) {
        if (jsDynamicCast<JSTestTypedefsPrototype*>(JSValue::decode(thisValue)))
            reportDeprecatedSetterError(*exec, "TestTypedefs", "stringAttrWithGetterException");
        else
            throwSetterTypeError(*exec, "TestTypedefs", "stringAttrWithGetterException");
        return;
    }
    auto& impl = castedThis->impl();
    const String& nativeValue(value.isEmpty() ? String() : value.toString(exec)->value(exec));
    if (UNLIKELY(exec->hadException()))
        return;
    impl.setStringAttrWithGetterException(nativeValue);
}

示例#16

文件： JSTestNondeterministic.cpp 项目： chenbk85/webkit2-wincairo

void setJSTestNondeterministicNondeterministicExceptionAttr(ExecState* exec, JSObject* baseObject, EncodedJSValue thisValue, EncodedJSValue encodedValue)
{
    JSValue value = JSValue::decode(encodedValue);
    UNUSED_PARAM(baseObject);
    JSTestNondeterministic* castedThis = jsDynamicCast<JSTestNondeterministic*>(JSValue::decode(thisValue));
    if (UNLIKELY(!castedThis)) {
        if (jsDynamicCast<JSTestNondeterministicPrototype*>(JSValue::decode(thisValue)))
            reportDeprecatedSetterError(*exec, "TestNondeterministic", "nondeterministicExceptionAttr");
        else
            throwSetterTypeError(*exec, "TestNondeterministic", "nondeterministicExceptionAttr");
        return;
    }
    TestNondeterministic& impl = castedThis->impl();
    const String& nativeValue(value.isEmpty() ? String() : value.toString(exec)->value(exec));
    if (UNLIKELY(exec->hadException()))
        return;
    impl.setNondeterministicExceptionAttr(nativeValue);
}

示例#17

void setJSWaveShaperNodeOversample(ExecState* exec, EncodedJSValue thisValue, EncodedJSValue encodedValue)
{
    JSValue value = JSValue::decode(encodedValue);
    UNUSED_PARAM(exec);
    JSWaveShaperNode* castedThis = jsDynamicCast<JSWaveShaperNode*>(JSValue::decode(thisValue));
    if (!castedThis) {
        throwVMTypeError(exec);
        return;
    }
    WaveShaperNode& impl = castedThis->impl();
    ExceptionCode ec = 0;
    const String nativeValue(value.isEmpty() ? String() : value.toString(exec)->value(exec));
    if (exec->hadException())
        return;
    if (nativeValue != "none" && nativeValue != "2x" && nativeValue != "4x")
        return;
    impl.setOversample(nativeValue, ec);
    setDOMException(exec, ec);
}

示例#18

PredictedType predictionFromValue(JSValue value)
{
    if (value.isEmpty())
        return PredictEmpty;
    if (value.isInt32())
        return PredictInt32;
    if (value.isDouble()) {
        double number = value.asNumber();
        if (number == number)
            return PredictDoubleReal;
        return PredictDoubleNaN;
    }
    if (value.isCell())
        return predictionFromCell(value.asCell());
    if (value.isBoolean())
        return PredictBoolean;
    ASSERT(value.isUndefinedOrNull());
    return PredictOther;
}

示例#19

文件： SpeculatedType.cpp 项目： boska/webkit

SpeculatedType speculationFromValue(JSValue value)
{
    if (value.isEmpty())
        return SpecEmpty;
    if (value.isInt32())
        return SpecInt32;
    if (value.isDouble()) {
        double number = value.asNumber();
        if (number != number)
            return SpecDoubleNaN;
        if (value.isMachineInt())
            return SpecInt52AsDouble;
        return SpecNonIntAsDouble;
    }
    if (value.isCell())
        return speculationFromCell(value.asCell());
    if (value.isBoolean())
        return SpecBoolean;
    ASSERT(value.isUndefinedOrNull());
    return SpecOther;
}

示例#20

文件： IteratorOperations.cpp 项目： LuXiong/webkit

JSValue iteratorNext(ExecState* exec, JSValue iterator, JSValue value)
{
    JSValue nextFunction = iterator.get(exec, exec->vm().propertyNames->next);
    if (exec->hadException())
        return jsUndefined();

    CallData nextFunctionCallData;
    CallType nextFunctionCallType = getCallData(nextFunction, nextFunctionCallData);
    if (nextFunctionCallType == CallType::None)
        return throwTypeError(exec);

    MarkedArgumentBuffer nextFunctionArguments;
    if (!value.isEmpty())
        nextFunctionArguments.append(value);
    JSValue result = call(exec, nextFunction, nextFunctionCallType, nextFunctionCallData, iterator, nextFunctionArguments);
    if (exec->hadException())
        return jsUndefined();

    if (!result.isObject())
        return throwTypeError(exec, ASCIILiteral("Iterator result interface is not an object."));

    return result;
}

示例#21

文件： IteratorOperations.cpp 项目： caiolima/webkit

JSValue iteratorNext(ExecState* exec, JSValue iterator, JSValue value)
{
    VM& vm = exec->vm();
    auto scope = DECLARE_THROW_SCOPE(vm);

    JSValue nextFunction = iterator.get(exec, vm.propertyNames->next);
    RETURN_IF_EXCEPTION(scope, JSValue());

    CallData nextFunctionCallData;
    CallType nextFunctionCallType = getCallData(nextFunction, nextFunctionCallData);
    if (nextFunctionCallType == CallType::None)
        return throwTypeError(exec, scope);

    MarkedArgumentBuffer nextFunctionArguments;
    if (!value.isEmpty())
        nextFunctionArguments.append(value);
    JSValue result = call(exec, nextFunction, nextFunctionCallType, nextFunctionCallData, iterator, nextFunctionArguments);
    RETURN_IF_EXCEPTION(scope, JSValue());

    if (!result.isObject())
        return throwTypeError(exec, scope, ASCIILiteral("Iterator result interface is not an object."));

    return result;
}

示例#22

void setJSTestInterfaceSupplementalStr2(ExecState* exec, JSObject* thisObject, JSValue value)
{
    JSTestInterface* castedThis = static_cast<JSTestInterface*>(thisObject);
    TestInterface* impl = static_cast<TestInterface*>(castedThis->impl());
    TestSupplemental::setSupplementalStr2(impl, ustringToString(value.isEmpty() ? UString() : value.toString(exec)->value(exec)));
}