Example #1
0
// 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;
}
Example #2
0
JSValue evaluateWithScopeExtension(ExecState* exec, const SourceCode& source, JSObject* scopeExtensionObject, NakedPtr<Exception>& returnedException)
{
    JSGlobalObject* globalObject = exec->vmEntryGlobalObject();

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

    JSValue returnValue = JSC::evaluate(globalObject->globalExec(), source, globalObject, returnedException);

    if (scopeExtensionObject)
        globalObject->clearGlobalScopeExtension();

    return returnValue;
}