C++ (Cpp) CallFrame::vm示例

示例#1

文件： StackVisitor.cpp 项目： houzhenggang/webkit

Arguments* StackVisitor::Frame::createArguments()
{
    ASSERT(m_callFrame);
    CallFrame* physicalFrame = m_callFrame;
    VM& vm = physicalFrame->vm();
    Arguments* arguments;
    ArgumentsMode mode;
    if (Options::enableFunctionDotArguments())
        mode = ClonedArgumentsCreationMode;
    else
        mode = FakeArgumentValuesCreationMode;
#if ENABLE(DFG_JIT)
    if (isInlinedFrame()) {
        ASSERT(m_inlineCallFrame);
        arguments = Arguments::create(vm, physicalFrame, m_inlineCallFrame, mode);
        arguments->tearOff(physicalFrame, m_inlineCallFrame);
        jsCast<Arguments*>((JSCell*)arguments);
    } else 
#endif
    {
        JSLexicalEnvironment* lexicalEnvironment = nullptr;
        arguments = Arguments::create(vm, physicalFrame, lexicalEnvironment, mode);
        arguments->tearOff(physicalFrame);
    }
    return arguments;
}

示例#2

文件： DebuggerCallFrame.cpp 项目： SwiseCorp/webkit

JSValue DebuggerCallFrame::evaluateNonBlocking(const String& script, NakedPtr<Exception>& exception)
{
	ASSERT(isValid());
	CallFrame* callFrame = m_callFrame;
	if (!callFrame)
		return jsNull();

	if (!callFrame->codeBlock())
		return JSValue();

	DebuggerEvalEnabler evalEnabler(callFrame);
	VM& vm = callFrame->vm();
	auto& codeBlock = *callFrame->codeBlock();
	ThisTDZMode thisTDZMode = codeBlock.unlinkedCodeBlock()->constructorKind() == ConstructorKind::Derived ? ThisTDZMode::AlwaysCheck : ThisTDZMode::CheckIfNeeded;

	VariableEnvironment variablesUnderTDZ;
	JSScope::collectVariablesUnderTDZ(scope()->jsScope(), variablesUnderTDZ);

	EvalExecutable* eval = EvalExecutable::create(callFrame, makeSource(script), codeBlock.isStrictMode(), thisTDZMode, codeBlock.unlinkedCodeBlock()->isDerivedConstructorContext(), codeBlock.unlinkedCodeBlock()->isArrowFunction(), &variablesUnderTDZ);
	if (vm.exception()) {
		exception = vm.exception();
		vm.clearException();
		return jsUndefined();
	}

	JSValue thisValue = thisValueForCallFrame(callFrame);
	JSValue result = vm.interpreter->execute(eval, callFrame, thisValue, scope()->jsScope());
	if (vm.exception()) {
		exception = vm.exception();
		vm.clearException();
	}
	ASSERT(result);
	return result;
}

示例#3

文件： DebuggerCallFrame.cpp 项目： CannedFish/webkit

// Evaluate some JavaScript code in the scope of this frame.
JSValue DebuggerCallFrame::evaluate(const String& script, JSValue& exception)
{
    ASSERT(isValid());
    CallFrame* callFrame = m_callFrame;
    if (!callFrame)
        return jsNull();

    JSLockHolder lock(callFrame);

    if (!callFrame->codeBlock())
        return JSValue();
    
    VM& vm = callFrame->vm();
    EvalExecutable* eval = EvalExecutable::create(callFrame, makeSource(script), callFrame->codeBlock()->isStrictMode());
    if (vm.exception()) {
        exception = vm.exception();
        vm.clearException();
        return jsUndefined();
    }

    JSValue thisValue = thisValueForCallFrame(callFrame);
    JSValue result = vm.interpreter->execute(eval, callFrame, thisValue, scope());
    if (vm.exception()) {
        exception = vm.exception();
        vm.clearException();
    }
    ASSERT(result);
    return result;
}

示例#4

文件： DebuggerCallFrame.cpp 项目： eocanha/webkit

// Evaluate some JavaScript code in the scope of this frame.
JSValue DebuggerCallFrame::evaluateWithScopeExtension(const String& script, JSObject* scopeExtensionObject, NakedPtr<Exception>& exception)
{
    ASSERT(isValid());
    CallFrame* callFrame = m_validMachineFrame;
    if (!callFrame)
        return jsUndefined();

    VM& vm = callFrame->vm();
    JSLockHolder lock(vm);
    auto catchScope = DECLARE_CATCH_SCOPE(vm);

    CodeBlock* codeBlock = nullptr;
    if (isTailDeleted())
        codeBlock = m_shadowChickenFrame.codeBlock;
    else
        codeBlock = callFrame->codeBlock();
    if (!codeBlock)
        return jsUndefined();
    
    DebuggerEvalEnabler evalEnabler(callFrame);

    EvalContextType evalContextType;
    
    if (isFunctionParseMode(codeBlock->unlinkedCodeBlock()->parseMode()))
        evalContextType = EvalContextType::FunctionEvalContext;
    else if (codeBlock->unlinkedCodeBlock()->codeType() == EvalCode)
        evalContextType = codeBlock->unlinkedCodeBlock()->evalContextType();
    else 
        evalContextType = EvalContextType::None;

    VariableEnvironment variablesUnderTDZ;
    JSScope::collectClosureVariablesUnderTDZ(scope()->jsScope(), variablesUnderTDZ);

    EvalExecutable* eval = DirectEvalExecutable::create(callFrame, makeSource(script), codeBlock->isStrictMode(), codeBlock->unlinkedCodeBlock()->derivedContextType(), codeBlock->unlinkedCodeBlock()->isArrowFunction(), evalContextType, &variablesUnderTDZ);
    if (UNLIKELY(catchScope.exception())) {
        exception = catchScope.exception();
        catchScope.clearException();
        return jsUndefined();
    }

    JSGlobalObject* globalObject = callFrame->vmEntryGlobalObject();
    if (scopeExtensionObject) {
        JSScope* ignoredPreviousScope = globalObject->globalScope();
        globalObject->setGlobalScopeExtension(JSWithScope::create(vm, globalObject, scopeExtensionObject, ignoredPreviousScope));
    }

    JSValue thisValue = this->thisValue();
    JSValue result = vm.interpreter->execute(eval, callFrame, thisValue, scope()->jsScope());
    if (UNLIKELY(catchScope.exception())) {
        exception = catchScope.exception();
        catchScope.clearException();
    }

    if (scopeExtensionObject)
        globalObject->clearGlobalScopeExtension();

    ASSERT(result);
    return result;
}

示例#5

文件： JSLexicalEnvironment.cpp 项目： AndriyKalashnykov/webkit

EncodedJSValue JSLexicalEnvironment::argumentsGetter(ExecState*, JSObject* slotBase, EncodedJSValue, PropertyName)
{
    JSLexicalEnvironment* lexicalEnvironment = jsCast<JSLexicalEnvironment*>(slotBase);
    CallFrame* callFrame = CallFrame::create(reinterpret_cast<Register*>(lexicalEnvironment->m_registers));
    return JSValue::encode(jsUndefined());

    VirtualRegister argumentsRegister = callFrame->codeBlock()->argumentsRegister();
    if (JSValue arguments = callFrame->uncheckedR(argumentsRegister.offset()).jsValue())
        return JSValue::encode(arguments);
    int realArgumentsRegister = unmodifiedArgumentsRegister(argumentsRegister).offset();

    JSValue arguments = JSValue(Arguments::create(callFrame->vm(), callFrame));
    callFrame->uncheckedR(argumentsRegister.offset()) = arguments;
    callFrame->uncheckedR(realArgumentsRegister) = arguments;
    
    ASSERT(callFrame->uncheckedR(realArgumentsRegister).jsValue().inherits(Arguments::info()));
    return JSValue::encode(callFrame->uncheckedR(realArgumentsRegister).jsValue());
}

示例#6

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

Arguments* StackVisitor::Frame::createArguments()
{
    ASSERT(m_callFrame);
    CallFrame* physicalFrame = m_callFrame;
    VM& vm = physicalFrame->vm();
    Arguments* arguments;
#if ENABLE(DFG_JIT)
    if (isInlinedFrame()) {
        ASSERT(m_inlineCallFrame);
        arguments = Arguments::create(vm, physicalFrame, m_inlineCallFrame);
        arguments->tearOff(physicalFrame, m_inlineCallFrame);
    } else 
#endif
    {
        arguments = Arguments::create(vm, physicalFrame);
        arguments->tearOff(physicalFrame);
    }
    return arguments;
}

示例#7

文件： JSActivation.cpp 项目： KnightSwarm/WebKitTi

JSValue JSActivation::argumentsGetter(ExecState*, JSValue slotBase, PropertyName)
{
    JSActivation* activation = jsCast<JSActivation*>(slotBase);
    if (activation->isTornOff())
        return jsUndefined();

    CallFrame* callFrame = CallFrame::create(reinterpret_cast<Register*>(activation->m_registers));
    int argumentsRegister = callFrame->codeBlock()->argumentsRegister();
    if (JSValue arguments = callFrame->uncheckedR(argumentsRegister).jsValue())
        return arguments;
    int realArgumentsRegister = unmodifiedArgumentsRegister(argumentsRegister);

    JSValue arguments = JSValue(Arguments::create(callFrame->vm(), callFrame));
    callFrame->uncheckedR(argumentsRegister) = arguments;
    callFrame->uncheckedR(realArgumentsRegister) = arguments;
    
    ASSERT(callFrame->uncheckedR(realArgumentsRegister).jsValue().inherits(Arguments::info()));
    return callFrame->uncheckedR(realArgumentsRegister).jsValue();
}

示例#8

文件： JSActivation.cpp 项目： 604339917/JavaScriptCore-iOS-1

EncodedJSValue JSActivation::argumentsGetter(ExecState*, EncodedJSValue slotBase, EncodedJSValue, PropertyName)
{
    JSActivation* activation = jsCast<JSActivation*>(JSValue::decode(slotBase));
    CallFrame* callFrame = CallFrame::create(reinterpret_cast<Register*>(activation->m_registers));
    ASSERT(!activation->isTornOff() && (callFrame->codeBlock()->usesArguments() || callFrame->codeBlock()->usesEval()));
    if (activation->isTornOff() || !(callFrame->codeBlock()->usesArguments() || callFrame->codeBlock()->usesEval()))
        return JSValue::encode(jsUndefined());

    VirtualRegister argumentsRegister = callFrame->codeBlock()->argumentsRegister();
    if (JSValue arguments = callFrame->uncheckedR(argumentsRegister.offset()).jsValue())
        return JSValue::encode(arguments);
    int realArgumentsRegister = unmodifiedArgumentsRegister(argumentsRegister).offset();

    JSValue arguments = JSValue(Arguments::create(callFrame->vm(), callFrame));
    callFrame->uncheckedR(argumentsRegister.offset()) = arguments;
    callFrame->uncheckedR(realArgumentsRegister) = arguments;
    
    ASSERT(callFrame->uncheckedR(realArgumentsRegister).jsValue().inherits(Arguments::info()));
    return JSValue::encode(callFrame->uncheckedR(realArgumentsRegister).jsValue());
}