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s.golasch
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build/node_modules/prepack/lib/debugger/adapter/channel/AdapterChannel.js
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230
build/node_modules/prepack/lib/debugger/adapter/channel/AdapterChannel.js
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"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.AdapterChannel = undefined;
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var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**
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* Copyright (c) 2017-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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var _FileIOWrapper = require("./../../common/channel/FileIOWrapper.js");
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var _MessageMarshaller = require("./../../common/channel/MessageMarshaller.js");
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var _queueFifo = require("queue-fifo");
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var _queueFifo2 = _interopRequireDefault(_queueFifo);
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var _events = require("events");
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var _events2 = _interopRequireDefault(_events);
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var _invariant = require("./../../common/invariant.js");
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var _invariant2 = _interopRequireDefault(_invariant);
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var _DebugMessage = require("./../../common/channel/DebugMessage.js");
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var _child_process = require("child_process");
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var _child_process2 = _interopRequireDefault(_child_process);
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
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//Channel used by the debug adapter to communicate with Prepack
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var AdapterChannel = exports.AdapterChannel = function () {
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function AdapterChannel(inFilePath, outFilePath) {
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_classCallCheck(this, AdapterChannel);
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this._ioWrapper = new _FileIOWrapper.FileIOWrapper(true, inFilePath, outFilePath);
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this._marshaller = new _MessageMarshaller.MessageMarshaller();
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this._queue = new _queueFifo2.default();
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this._pendingRequestCallbacks = new Map();
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this._eventEmitter = new _events2.default();
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}
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_createClass(AdapterChannel, [{
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key: "_handleFileReadError",
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// Error handler for errors in files from the adapter channel
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value: function _handleFileReadError(err) {
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console.error(err);
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process.exit(1);
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}
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}, {
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key: "_processPrepackMessage",
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value: function _processPrepackMessage(message) {
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var dbgResponse = this._marshaller.unmarshallResponse(message);
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if (dbgResponse.result.kind === "breakpoint-add") {
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this._eventEmitter.emit(_DebugMessage.DebugMessage.BREAKPOINT_ADD_ACKNOWLEDGE, dbgResponse.id, dbgResponse);
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} else if (dbgResponse.result.kind === "stopped") {
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this._eventEmitter.emit(_DebugMessage.DebugMessage.STOPPED_RESPONSE, dbgResponse);
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} else if (dbgResponse.result.kind === "stepInto") {
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this._eventEmitter.emit(_DebugMessage.DebugMessage.STEPINTO_RESPONSE, dbgResponse);
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}
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this._prepackWaiting = true;
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this._processRequestCallback(dbgResponse);
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this.trySendNextRequest();
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}
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// Check to see if the next request to Prepack can be sent and send it if so
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}, {
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key: "trySendNextRequest",
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value: function trySendNextRequest() {
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// check to see if Prepack is ready to accept another request
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if (!this._prepackWaiting) return false;
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// check that there is a message to send
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if (this._queue.isEmpty()) return false;
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var request = this._queue.dequeue();
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this.listenOnFile(this._processPrepackMessage.bind(this));
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this.writeOut(request);
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this._prepackWaiting = false;
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return true;
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}
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}, {
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key: "_addRequestCallback",
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value: function _addRequestCallback(requestID, callback) {
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(0, _invariant2.default)(!this._pendingRequestCallbacks.has(requestID), "Request ID already exists in pending requests");
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this._pendingRequestCallbacks.set(requestID, callback);
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}
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}, {
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key: "_processRequestCallback",
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value: function _processRequestCallback(response) {
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var callback = this._pendingRequestCallbacks.get(response.id);
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(0, _invariant2.default)(callback !== undefined, "Request ID does not exist in pending requests: " + response.id);
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callback(response);
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this._pendingRequestCallbacks.delete(response.id);
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}
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}, {
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key: "registerChannelEvent",
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value: function registerChannelEvent(event, listener) {
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this._eventEmitter.addListener(event, listener);
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}
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}, {
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key: "launch",
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value: function launch(requestID, args, callback) {
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var _this = this;
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this.sendDebuggerStart(requestID);
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this.listenOnFile(this._processPrepackMessage.bind(this));
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var prepackCommand = [args.sourceFile].concat(args.prepackArguments);
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// Note: here the input file for the adapter is the output file for Prepack, and vice versa.
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prepackCommand = prepackCommand.concat(["--debugInFilePath", args.debugOutFilePath, "--debugOutFilePath", args.debugInFilePath]);
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var runtime = "prepack";
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if (args.prepackRuntime.length > 0) {
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// user specified a Prepack path
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runtime = "node";
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prepackCommand = [args.prepackRuntime].concat(prepackCommand);
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}
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this._prepackProcess = _child_process2.default.spawn(runtime, prepackCommand);
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process.on("exit", function () {
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_this._prepackProcess.kill();
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_this.clean();
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process.exit();
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});
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process.on("SIGINT", function () {
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_this._prepackProcess.kill();
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process.exit();
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});
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this._prepackProcess.stdout.on("data", args.outputCallback);
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this._prepackProcess.on("exit", args.exitCallback);
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this._addRequestCallback(requestID, callback);
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}
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}, {
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key: "run",
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value: function run(requestID, callback) {
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this._queue.enqueue(this._marshaller.marshallContinueRequest(requestID));
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this.trySendNextRequest();
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this._addRequestCallback(requestID, callback);
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}
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}, {
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key: "setBreakpoints",
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value: function setBreakpoints(requestID, breakpoints, callback) {
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this._queue.enqueue(this._marshaller.marshallSetBreakpointsRequest(requestID, breakpoints));
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this.trySendNextRequest();
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this._addRequestCallback(requestID, callback);
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}
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}, {
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key: "getStackFrames",
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value: function getStackFrames(requestID, callback) {
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this._queue.enqueue(this._marshaller.marshallStackFramesRequest(requestID));
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this.trySendNextRequest();
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this._addRequestCallback(requestID, callback);
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}
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}, {
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key: "getScopes",
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value: function getScopes(requestID, frameId, callback) {
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this._queue.enqueue(this._marshaller.marshallScopesRequest(requestID, frameId));
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this.trySendNextRequest();
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this._addRequestCallback(requestID, callback);
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}
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}, {
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key: "getVariables",
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value: function getVariables(requestID, variablesReference, callback) {
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this._queue.enqueue(this._marshaller.marshallVariablesRequest(requestID, variablesReference));
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this.trySendNextRequest();
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this._addRequestCallback(requestID, callback);
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}
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}, {
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key: "stepInto",
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value: function stepInto(requestID, callback) {
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this._queue.enqueue(this._marshaller.marshallStepIntoRequest(requestID));
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this.trySendNextRequest();
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this._addRequestCallback(requestID, callback);
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}
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}, {
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key: "stepOver",
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value: function stepOver(requestID, callback) {
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this._queue.enqueue(this._marshaller.marshallStepOverRequest(requestID));
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this.trySendNextRequest();
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this._addRequestCallback(requestID, callback);
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}
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}, {
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key: "evaluate",
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value: function evaluate(requestID, frameId, expression, callback) {
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this._queue.enqueue(this._marshaller.marshallEvaluateRequest(requestID, frameId, expression));
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this.trySendNextRequest();
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this._addRequestCallback(requestID, callback);
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}
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}, {
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key: "writeOut",
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value: function writeOut(contents) {
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this._ioWrapper.writeOutSync(contents);
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}
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}, {
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key: "sendDebuggerStart",
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value: function sendDebuggerStart(requestID) {
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this.writeOut(this._marshaller.marshallDebuggerStart(requestID));
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}
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}, {
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key: "listenOnFile",
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value: function listenOnFile(messageProcessor) {
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this._ioWrapper.readIn(this._handleFileReadError.bind(this), messageProcessor);
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}
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}, {
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key: "clean",
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value: function clean() {
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this._ioWrapper.clearInFile();
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this._ioWrapper.clearOutFile();
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}
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}]);
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return AdapterChannel;
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}();
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//# sourceMappingURL=AdapterChannel.js.map
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