C++ InjectedScript类代码示例

void ConsoleMessage::addToFrontend(InspectorFrontend::Console* frontend, InjectedScriptManager* injectedScriptManager)
{
    RefPtr<TypeBuilder::Console::ConsoleMessage> jsonObj = TypeBuilder::Console::ConsoleMessage::create()
        .setSource(messageSourceValue(m_source))
        .setLevel(messageLevelValue(m_level))
        .setText(m_message);
    // FIXME: only send out type for ConsoleAPI source messages.
    jsonObj->setType(messageTypeValue(m_type));
    jsonObj->setLine(static_cast<int>(m_line));
    jsonObj->setUrl(m_url);
    jsonObj->setRepeatCount(static_cast<int>(m_repeatCount));
    if (m_source == NetworkMessageSource && !m_requestId.isEmpty())
        jsonObj->setNetworkRequestId(m_requestId);
    if (m_arguments && m_arguments->argumentCount()) {
        InjectedScript injectedScript = injectedScriptManager->injectedScriptFor(m_arguments->globalState());
        if (!injectedScript.hasNoValue()) {
            RefPtr<InspectorArray> jsonArgs = InspectorArray::create();
            for (unsigned i = 0; i < m_arguments->argumentCount(); ++i) {
                RefPtr<InspectorValue> inspectorValue = injectedScript.wrapObject(m_arguments->argumentAt(i), "console");
                if (!inspectorValue) {
                    ASSERT_NOT_REACHED();
                    return;
                }
                jsonArgs->pushValue(inspectorValue);
            }
            jsonObj->setParameters(jsonArgs);
        }
    }
    if (m_callStack)
        jsonObj->setStackTrace(m_callStack->buildInspectorArray());
    frontend->messageAdded(jsonObj);
}

void InspectorRuntimeAgent::callFunctionOn(ErrorString* errorString, const String& objectId, const String& expression, const RefPtr<InspectorArray>* const optionalArguments, const bool* const doNotPauseOnExceptionsAndMuteConsole, const bool* const returnByValue, const bool* generatePreview, RefPtr<Inspector::TypeBuilder::Runtime::RemoteObject>& result, Inspector::TypeBuilder::OptOutput<bool>* wasThrown)
{
    InjectedScript injectedScript = m_injectedScriptManager->injectedScriptForObjectId(objectId);
    if (injectedScript.hasNoValue()) {
        *errorString = "Inspected frame has gone";
        return;
    }
    String arguments;
    if (optionalArguments)
        arguments = (*optionalArguments)->toJSONString();

#if ENABLE(JAVASCRIPT_DEBUGGER)
    ScriptDebugServer::PauseOnExceptionsState previousPauseOnExceptionsState = ScriptDebugServer::DontPauseOnExceptions;
    if (asBool(doNotPauseOnExceptionsAndMuteConsole))
        previousPauseOnExceptionsState = setPauseOnExceptionsState(m_scriptDebugServer, ScriptDebugServer::DontPauseOnExceptions);
#endif
    if (asBool(doNotPauseOnExceptionsAndMuteConsole))
        muteConsole();

    injectedScript.callFunctionOn(errorString, objectId, expression, arguments, asBool(returnByValue), asBool(generatePreview), &result, wasThrown);

    if (asBool(doNotPauseOnExceptionsAndMuteConsole)) {
        unmuteConsole();
#if ENABLE(JAVASCRIPT_DEBUGGER)
        setPauseOnExceptionsState(m_scriptDebugServer, previousPauseOnExceptionsState);
#endif
    }
}

void InspectorHeapAgent::getRemoteObject(ErrorString& errorString, int heapObjectId, const String* optionalObjectGroup, RefPtr<Inspector::Protocol::Runtime::RemoteObject>& result)
{
    // Prevent the cell from getting collected as we look it up.
    VM& vm = m_environment.vm();
    JSLockHolder lock(vm);
    DeferGC deferGC(vm.heap);

    unsigned heapObjectIdentifier = static_cast<unsigned>(heapObjectId);
    const std::optional<HeapSnapshotNode> optionalNode = nodeForHeapObjectIdentifier(errorString, heapObjectIdentifier);
    if (!optionalNode)
        return;

    JSCell* cell = optionalNode->cell;
    Structure* structure = cell->structure(vm);
    if (!structure) {
        errorString = ASCIILiteral("Unable to get object details");
        return;
    }

    JSGlobalObject* globalObject = structure->globalObject();
    if (!globalObject) {
        errorString = ASCIILiteral("Unable to get object details");
        return;
    }

    InjectedScript injectedScript = m_injectedScriptManager.injectedScriptFor(globalObject->globalExec());
    if (injectedScript.hasNoValue()) {
        errorString = ASCIILiteral("Unable to get object details - InjectedScript");
        return;
    }

    String objectGroup = optionalObjectGroup ? *optionalObjectGroup : String();
    result = injectedScript.wrapObject(cell, objectGroup, true);
}

void InspectorRuntimeAgent::evaluate(ErrorString* errorString, const String& expression, const String* const objectGroup, const bool* const includeCommandLineAPI, const bool* const doNotPauseOnExceptions, const String* const frameId, const bool* const returnByValue, RefPtr<InspectorObject>* result, bool* wasThrown)
{
    ScriptState* scriptState = 0;
    if (frameId) {
        scriptState = scriptStateForFrameId(*frameId);
        if (!scriptState) {
            *errorString = "Frame with given id not found.";
            return;
        }
    } else
        scriptState = getDefaultInspectedState();
    InjectedScript injectedScript = m_injectedScriptManager->injectedScriptFor(scriptState);
    if (injectedScript.hasNoValue()) {
        *errorString = "Inspected frame has gone";
        return;
    }
#if ENABLE(JAVASCRIPT_DEBUGGER)
    ASSERT(m_scriptDebugServer);
    bool pauseStateChanged = false;
    ScriptDebugServer::PauseOnExceptionsState presentState = m_scriptDebugServer->pauseOnExceptionsState();
    if (asBool(doNotPauseOnExceptions) && presentState != ScriptDebugServer::DontPauseOnExceptions) {
        m_scriptDebugServer->setPauseOnExceptionsState(ScriptDebugServer::DontPauseOnExceptions);
        pauseStateChanged = true;
    }
#endif

    injectedScript.evaluate(errorString, expression, objectGroup ? *objectGroup : "", asBool(includeCommandLineAPI), asBool(returnByValue), result, wasThrown);

#if ENABLE(JAVASCRIPT_DEBUGGER)
    if (pauseStateChanged)
        m_scriptDebugServer->setPauseOnExceptionsState(presentState);
#endif
}

void InspectorDebuggerAgent::runScript(ErrorString* errorString, const ScriptId& scriptId, const int* executionContextId, const String* const objectGroup, const bool* const doNotPauseOnExceptionsAndMuteConsole, RefPtr<TypeBuilder::Runtime::RemoteObject>& result, TypeBuilder::OptOutput<bool>* wasThrown)
{
    InjectedScript injectedScript = injectedScriptForEval(errorString, executionContextId);
    if (injectedScript.hasNoValue()) {
        *errorString = "Inspected frame has gone";
        return;
    }

    ScriptDebugServer::PauseOnExceptionsState previousPauseOnExceptionsState = scriptDebugServer().pauseOnExceptionsState();
    if (doNotPauseOnExceptionsAndMuteConsole && *doNotPauseOnExceptionsAndMuteConsole) {
        if (previousPauseOnExceptionsState != ScriptDebugServer::DontPauseOnExceptions)
            scriptDebugServer().setPauseOnExceptionsState(ScriptDebugServer::DontPauseOnExceptions);
        muteConsole();
    }

    ScriptValue value;
    bool wasThrownValue;
    String exceptionMessage;
    scriptDebugServer().runScript(injectedScript.scriptState(), scriptId, &value, &wasThrownValue, &exceptionMessage);
    *wasThrown = wasThrownValue;
    if (value.hasNoValue()) {
        *errorString = "Script execution failed";
        return;
    }
    result = injectedScript.wrapObject(value, objectGroup ? *objectGroup : "");
    if (wasThrownValue)
        result->setDescription(exceptionMessage);

    if (doNotPauseOnExceptionsAndMuteConsole && *doNotPauseOnExceptionsAndMuteConsole) {
        unmuteConsole();
        if (scriptDebugServer().pauseOnExceptionsState() != previousPauseOnExceptionsState)
            scriptDebugServer().setPauseOnExceptionsState(previousPauseOnExceptionsState);
    }
}

void InspectorRuntimeAgent::callFunctionOn(ErrorString& errorString, const String& objectId, const String& expression, const InspectorArray* optionalArguments, const bool* const doNotPauseOnExceptionsAndMuteConsole, const bool* const returnByValue, const bool* generatePreview, RefPtr<Inspector::Protocol::Runtime::RemoteObject>& result, Inspector::Protocol::OptOutput<bool>* wasThrown)
{
    InjectedScript injectedScript = m_injectedScriptManager.injectedScriptForObjectId(objectId);
    if (injectedScript.hasNoValue()) {
        errorString = ASCIILiteral("Could not find InjectedScript for objectId");
        return;
    }

    String arguments;
    if (optionalArguments)
        arguments = optionalArguments->toJSONString();

    ScriptDebugServer::PauseOnExceptionsState previousPauseOnExceptionsState = ScriptDebugServer::DontPauseOnExceptions;
    if (asBool(doNotPauseOnExceptionsAndMuteConsole))
        previousPauseOnExceptionsState = setPauseOnExceptionsState(m_scriptDebugServer, ScriptDebugServer::DontPauseOnExceptions);
    if (asBool(doNotPauseOnExceptionsAndMuteConsole))
        muteConsole();

    injectedScript.callFunctionOn(errorString, objectId, expression, arguments, asBool(returnByValue), asBool(generatePreview), &result, wasThrown);

    if (asBool(doNotPauseOnExceptionsAndMuteConsole)) {
        unmuteConsole();
        setPauseOnExceptionsState(m_scriptDebugServer, previousPauseOnExceptionsState);
    }
}

void ConsoleMessage::addToFrontend(InspectorFrontend* frontend, InjectedScriptHost* injectedScriptHost)
{
    RefPtr<InspectorObject> jsonObj = InspectorObject::create();
    jsonObj->setNumber("source", static_cast<int>(m_source));
    jsonObj->setNumber("type", static_cast<int>(m_type));
    jsonObj->setNumber("level", static_cast<int>(m_level));
    jsonObj->setNumber("line", static_cast<int>(m_line));
    jsonObj->setString("url", m_url);
    jsonObj->setNumber("repeatCount", static_cast<int>(m_repeatCount));
    jsonObj->setString("message", m_message);
    if (m_type == NetworkErrorMessageType) 
        jsonObj->setNumber("requestId", m_requestId);
    if (m_arguments && m_arguments->argumentCount()) {
        InjectedScript injectedScript = injectedScriptHost->injectedScriptFor(m_arguments->globalState());
        if (!injectedScript.hasNoValue()) {
            RefPtr<InspectorArray> jsonArgs = InspectorArray::create();
            for (unsigned i = 0; i < m_arguments->argumentCount(); ++i) {
                RefPtr<InspectorValue> inspectorValue = injectedScript.wrapForConsole(m_arguments->argumentAt(i));
                if (!inspectorValue) {
                    ASSERT_NOT_REACHED();
                    return;
                }
                jsonArgs->pushValue(inspectorValue);
            }
            jsonObj->setArray("parameters", jsonArgs);
        }
    }
    if (m_callStack)
        jsonObj->setArray("stackTrace", m_callStack->buildInspectorObject());
    frontend->addConsoleMessage(jsonObj);
}

void InspectorDebuggerAgent::evaluateOnCallFrame(ErrorString* errorString, const String& callFrameId, const String& expression, const String* const objectGroup, const bool* const includeCommandLineAPI, const bool* const doNotPauseOnExceptionsAndMuteConsole, const bool* const returnByValue, const bool* generatePreview, RefPtr<TypeBuilder::Runtime::RemoteObject>& result, TypeBuilder::OptOutput<bool>* wasThrown)
{
    if (!isPaused() || m_currentCallStack.isNull()) {
        *errorString = "Attempt to access callframe when debugger is not on pause";
        return;
    }
    InjectedScript injectedScript = m_injectedScriptManager->injectedScriptForObjectId(callFrameId);
    if (injectedScript.hasNoValue()) {
        *errorString = "Inspected frame has gone";
        return;
    }

    ScriptDebugServer::PauseOnExceptionsState previousPauseOnExceptionsState = scriptDebugServer().pauseOnExceptionsState();
    if (doNotPauseOnExceptionsAndMuteConsole ? *doNotPauseOnExceptionsAndMuteConsole : false) {
        if (previousPauseOnExceptionsState != ScriptDebugServer::DontPauseOnExceptions)
            scriptDebugServer().setPauseOnExceptionsState(ScriptDebugServer::DontPauseOnExceptions);
        muteConsole();
    }

    injectedScript.evaluateOnCallFrame(errorString, m_currentCallStack, callFrameId, expression, objectGroup ? *objectGroup : "", includeCommandLineAPI ? *includeCommandLineAPI : false, returnByValue ? *returnByValue : false, generatePreview ? *generatePreview : false, &result, wasThrown);

    if (doNotPauseOnExceptionsAndMuteConsole ? *doNotPauseOnExceptionsAndMuteConsole : false) {
        unmuteConsole();
        if (scriptDebugServer().pauseOnExceptionsState() != previousPauseOnExceptionsState)
            scriptDebugServer().setPauseOnExceptionsState(previousPauseOnExceptionsState);
    }
}

void InspectorDebuggerAgent::setVariableValue(ErrorString* errorString, int scopeNumber, const String& variableName, const RefPtr<JSONObject>& newValue, const String* callFrameId, const String* functionObjectId)
{
    InjectedScript injectedScript;
    if (callFrameId) {
        if (!isPaused() || m_currentCallStack.isNull()) {
            *errorString = "Attempt to access callframe when debugger is not on pause";
            return;
        }
        injectedScript = m_injectedScriptManager->injectedScriptForObjectId(*callFrameId);
        if (injectedScript.hasNoValue()) {
            *errorString = "Inspected frame has gone";
            return;
        }
    } else if (functionObjectId) {
        injectedScript = m_injectedScriptManager->injectedScriptForObjectId(*functionObjectId);
        if (injectedScript.hasNoValue()) {
            *errorString = "Function object id cannot be resolved";
            return;
        }
    } else {
        *errorString = "Either call frame or function object must be specified";
        return;
    }
    String newValueString = newValue->toJSONString();

    injectedScript.setVariableValue(errorString, m_currentCallStack, callFrameId, functionObjectId, scopeNumber, variableName, newValueString);
}

void InspectorDebuggerAgent::didPause(ScriptState* scriptState, const ScriptValue& callFrames, const ScriptValue& exception)
{
    ASSERT(scriptState && !m_pausedScriptState);
    m_pausedScriptState = scriptState;
    m_currentCallStack = callFrames;

    if (!exception.hasNoValue()) {
        InjectedScript injectedScript = m_injectedScriptManager->injectedScriptFor(scriptState);
        if (!injectedScript.hasNoValue()) {
            m_breakReason = InspectorFrontend::Debugger::Reason::Exception;
            m_breakAuxData = injectedScript.wrapObject(exception, "backtrace")->openAccessors();
            // m_breakAuxData might be null after this.
        }
    }

    m_frontend->paused(currentCallFrames(), m_breakReason, m_breakAuxData);
    m_javaScriptPauseScheduled = false;

    if (!m_continueToLocationBreakpointId.isEmpty()) {
        scriptDebugServer().removeBreakpoint(m_continueToLocationBreakpointId);
        m_continueToLocationBreakpointId = "";
    }
    if (m_listener)
        m_listener->didPause();
}

void InspectorBackend::dispatchOnInjectedScript(long callId, long injectedScriptId, const String& methodName, const String& arguments, bool async)
{
    InspectorFrontend* frontend = inspectorFrontend();
    if (!frontend)
        return;

    // FIXME: explicitly pass injectedScriptId along with node id to the frontend.
    bool injectedScriptIdIsNodeId = injectedScriptId <= 0;

    InjectedScript injectedScript;
    if (injectedScriptIdIsNodeId)
        injectedScript = m_inspectorController->injectedScriptForNodeId(-injectedScriptId);
    else
        injectedScript = m_inspectorController->injectedScriptHost()->injectedScriptForId(injectedScriptId);

    if (injectedScript.hasNoValue())
        return;

    RefPtr<SerializedScriptValue> result;
    bool hadException = false;
    injectedScript.dispatch(callId, methodName, arguments, async, &result, &hadException);
    if (async)
        return;  // InjectedScript will return result asynchronously by means of ::reportDidDispatchOnInjectedScript.
    frontend->didDispatchOnInjectedScript(callId, result.get(), hadException);
}

Ref<Inspector::Protocol::Array<Inspector::Protocol::Debugger::CallFrame>> InspectorDebuggerAgent::currentCallFrames(InjectedScript injectedScript)
{
    ASSERT(!injectedScript.hasNoValue());
    if (injectedScript.hasNoValue())
        return Inspector::Protocol::Array<Inspector::Protocol::Debugger::CallFrame>::create();

    return injectedScript.wrapCallFrames(m_currentCallStack);
}

void InspectorRuntimeAgent::setPropertyValue(ErrorString* errorString, const String& objectId, const String& propertyName, const String& expression)
{
    InjectedScript injectedScript = m_injectedScriptManager->injectedScriptForObjectId(objectId);
    if (!injectedScript.hasNoValue())
        injectedScript.setPropertyValue(errorString, objectId, propertyName, expression);
    else
        *errorString = "No injected script found";
}

void InspectorRuntimeAgent::evaluate(ErrorString* errorString, const String& expression, const String* const objectGroup, const bool* const includeCommandLineAPI, const bool* const doNotPauseOnExceptionsAndMuteConsole, const int* executionContextId, const bool* const returnByValue, const bool* generatePreview, RefPtr<TypeBuilder::Runtime::RemoteObject>& result, TypeBuilder::OptOutput<bool>* wasThrown, RefPtr<TypeBuilder::Debugger::ExceptionDetails>& exceptionDetails)
{
    InjectedScript injectedScript = injectedScriptForEval(errorString, executionContextId);
    if (injectedScript.isEmpty())
        return;

    InjectedScriptCallScope callScope(this, asBool(doNotPauseOnExceptionsAndMuteConsole));
    injectedScript.evaluate(errorString, expression, objectGroup ? *objectGroup : "", asBool(includeCommandLineAPI), asBool(returnByValue), asBool(generatePreview), &result, wasThrown, &exceptionDetails);
}

void InspectorDebuggerAgent::getFunctionDetails(ErrorString* errorString, const String& functionId, RefPtr<TypeBuilder::Debugger::FunctionDetails>& details)
{
    InjectedScript injectedScript = m_injectedScriptManager->injectedScriptForObjectId(functionId);
    if (injectedScript.hasNoValue()) {
        *errorString = "Function object id is obsolete";
        return;
    }
    injectedScript.getFunctionDetails(errorString, functionId, &details);
}