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s.golasch
225
build/node_modules/prepack/lib/serializer/serializer.js
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225
build/node_modules/prepack/lib/serializer/serializer.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.Serializer = undefined;
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var _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"]) _i["return"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }; }();
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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 _realm = require("../realm.js");
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var _errors = require("../errors.js");
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var _completions = require("../completions.js");
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var _generator = require("../utils/generator.js");
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var _babelGenerator = require("babel-generator");
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var _babelGenerator2 = _interopRequireDefault(_babelGenerator);
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var _traverseFast = require("../utils/traverse-fast.js");
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var _traverseFast2 = _interopRequireDefault(_traverseFast);
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var _utils = require("../flow/utils.js");
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var _invariant = require("../invariant.js");
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var _invariant2 = _interopRequireDefault(_invariant);
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var _types = require("./types.js");
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var _functions = require("./functions.js");
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var _logger = require("./logger.js");
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var _modules = require("./modules.js");
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var _LoggingTracer = require("./LoggingTracer.js");
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var _ResidualHeapVisitor = require("./ResidualHeapVisitor.js");
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var _ResidualHeapSerializer = require("./ResidualHeapSerializer.js");
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var _ResidualHeapValueIdentifiers = require("./ResidualHeapValueIdentifiers.js");
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var _LazyObjectsSerializer = require("./LazyObjectsSerializer.js");
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var _babelTypes = require("babel-types");
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var t = _interopRequireWildcard(_babelTypes);
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var _ResidualHeapRefCounter = require("./ResidualHeapRefCounter");
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var _ResidualHeapGraphGenerator = require("./ResidualHeapGraphGenerator");
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function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }
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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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var Serializer = exports.Serializer = function () {
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function Serializer(realm) {
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var serializerOptions = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
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_classCallCheck(this, Serializer);
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(0, _invariant2.default)(realm.useAbstractInterpretation);
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// Start tracking mutations
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realm.generator = new _generator.Generator(realm, "main");
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this.realm = realm;
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this.logger = new _logger.Logger(this.realm, !!serializerOptions.internalDebug);
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this.statistics = new _types.SerializerStatistics();
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this.modules = new _modules.Modules(this.realm, this.logger, this.statistics, !!serializerOptions.logModules, !!serializerOptions.delayUnsupportedRequires, !!serializerOptions.accelerateUnsupportedRequires);
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this.functions = new _functions.Functions(this.realm, serializerOptions.additionalFunctions, this.modules.moduleTracer);
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if (serializerOptions.trace) this.realm.tracers.push(new _LoggingTracer.LoggingTracer(this.realm));
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this.options = serializerOptions;
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this.react = {
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usedReactElementKeys: new Set()
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};
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}
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_createClass(Serializer, [{
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key: "_execute",
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value: function _execute(sources) {
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var sourceMaps = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;
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var realm = this.realm;
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var _realm$$GlobalEnv$exe = realm.$GlobalEnv.executeSources(sources, "script", function (ast) {
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var realmPreludeGenerator = realm.preludeGenerator;
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(0, _invariant2.default)(realmPreludeGenerator);
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var forbiddenNames = realmPreludeGenerator.nameGenerator.forbiddenNames;
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(0, _traverseFast2.default)(ast, function (node) {
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if (!t.isIdentifier(node)) return false;
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forbiddenNames.add(node.name);
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return true;
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});
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}),
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_realm$$GlobalEnv$exe2 = _slicedToArray(_realm$$GlobalEnv$exe, 2),
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res = _realm$$GlobalEnv$exe2[0],
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code = _realm$$GlobalEnv$exe2[1];
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if (res instanceof _completions.AbruptCompletion) {
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var context = new _realm.ExecutionContext();
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realm.pushContext(context);
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try {
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this.logger.logCompletion(res);
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} finally {
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realm.popContext(context);
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}
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var diagnostic = new _errors.CompilerDiagnostic("Global code may end abruptly", res.location, "PP0016", "FatalError");
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realm.handleError(diagnostic);
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throw new _errors.FatalError();
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}
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return code;
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}
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}, {
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key: "init",
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value: function init(sources) {
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var sourceMaps = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;
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// Phase 1: Let's interpret.
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var timingStats = this.options.profile ? new _types.TimingStatistics() : undefined;
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if (timingStats !== undefined) {
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timingStats.totalTime = Date.now();
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timingStats.globalCodeTime = Date.now();
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}
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var code = this._execute(sources);
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if (timingStats !== undefined) timingStats.globalCodeTime = Date.now() - timingStats.globalCodeTime;
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if (this.logger.hasErrors()) return undefined;
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this.modules.resolveInitializedModules();
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this.functions.checkThatFunctionsAreIndependent();
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var reactStatistics = null;
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if (this.realm.react.enabled) {
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reactStatistics = new _types.ReactStatistics();
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this.functions.checkReactRootComponents(reactStatistics, this.react);
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}
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if (this.options.initializeMoreModules) {
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if (timingStats !== undefined) timingStats.initializeMoreModulesTime = Date.now();
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this.modules.initializeMoreModules();
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if (this.logger.hasErrors()) return undefined;
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if (timingStats !== undefined) timingStats.initializeMoreModulesTime = Date.now() - timingStats.initializeMoreModulesTime;
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}
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var additionalFunctionValuesAndEffects = this.functions.getAdditionalFunctionValuesToEffects();
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//Deep traversal of the heap to identify the necessary scope of residual functions
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if (timingStats !== undefined) timingStats.deepTraversalTime = Date.now();
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var residualHeapVisitor = new _ResidualHeapVisitor.ResidualHeapVisitor(this.realm, this.logger, this.modules, additionalFunctionValuesAndEffects);
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residualHeapVisitor.visitRoots();
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if (this.logger.hasErrors()) return undefined;
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if (timingStats !== undefined) timingStats.deepTraversalTime = Date.now() - timingStats.deepTraversalTime;
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var realmPreludeGenerator = this.realm.preludeGenerator;
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(0, _invariant2.default)(realmPreludeGenerator);
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var residualHeapValueIdentifiers = new _ResidualHeapValueIdentifiers.ResidualHeapValueIdentifiers(residualHeapVisitor.values.keys(), realmPreludeGenerator);
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var heapGraph = void 0;
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if (this.options.heapGraphFormat) {
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var heapRefCounter = new _ResidualHeapRefCounter.ResidualHeapRefCounter(this.realm, this.logger, this.modules, additionalFunctionValuesAndEffects);
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heapRefCounter.visitRoots();
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var heapGraphGenerator = new _ResidualHeapGraphGenerator.ResidualHeapGraphGenerator(this.realm, this.logger, this.modules, additionalFunctionValuesAndEffects, residualHeapValueIdentifiers, heapRefCounter.getResult());
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heapGraphGenerator.visitRoots();
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(0, _invariant2.default)(this.options.heapGraphFormat);
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heapGraph = heapGraphGenerator.generateResult(this.options.heapGraphFormat);
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}
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// Phase 2: Let's serialize the heap and generate code.
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// Serialize for the first time in order to gather reference counts
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if (this.options.inlineExpressions) {
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if (timingStats !== undefined) timingStats.referenceCountsTime = Date.now();
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residualHeapValueIdentifiers.initPass1();
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new _ResidualHeapSerializer.ResidualHeapSerializer(this.realm, this.logger, this.modules, residualHeapValueIdentifiers, residualHeapVisitor.inspector, residualHeapVisitor.values, residualHeapVisitor.functionInstances, residualHeapVisitor.functionInfos, this.options, residualHeapVisitor.referencedDeclaredValues, additionalFunctionValuesAndEffects, residualHeapVisitor.additionalFunctionValueInfos, residualHeapVisitor.declarativeEnvironmentRecordsBindings, this.statistics, this.react).serialize();
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if (this.logger.hasErrors()) return undefined;
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if (timingStats !== undefined) timingStats.referenceCountsTime = Date.now() - timingStats.referenceCountsTime;
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residualHeapValueIdentifiers.initPass2();
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}
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// Serialize for a second time, using reference counts to minimize number of generated identifiers
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if (timingStats !== undefined) timingStats.serializePassTime = Date.now();
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var TargetSerializer = this.options.lazyObjectsRuntime != null ? _LazyObjectsSerializer.LazyObjectsSerializer : _ResidualHeapSerializer.ResidualHeapSerializer;
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var residualHeapSerializer = new TargetSerializer(this.realm, this.logger, this.modules, residualHeapValueIdentifiers, residualHeapVisitor.inspector, residualHeapVisitor.values, residualHeapVisitor.functionInstances, residualHeapVisitor.functionInfos, this.options, residualHeapVisitor.referencedDeclaredValues, additionalFunctionValuesAndEffects, residualHeapVisitor.additionalFunctionValueInfos, residualHeapVisitor.declarativeEnvironmentRecordsBindings, this.statistics, this.react);
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var ast = residualHeapSerializer.serialize();
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if (this.realm.react.enabled && this.realm.react.flowRequired) {
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(0, _utils.stripFlowTypeAnnotations)(ast);
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}
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var generated = (0, _babelGenerator2.default)(ast, { sourceMaps: sourceMaps }, code);
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if (timingStats !== undefined) {
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timingStats.serializePassTime = Date.now() - timingStats.serializePassTime;
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timingStats.totalTime = Date.now() - timingStats.totalTime;
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}
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(0, _invariant2.default)(!this.logger.hasErrors());
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if (this.options.logStatistics) residualHeapSerializer.statistics.log();
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return {
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code: generated.code,
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map: generated.map,
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reactStatistics: reactStatistics,
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statistics: residualHeapSerializer.statistics,
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timingStats: timingStats,
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heapGraph: heapGraph
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};
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}
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}]);
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return Serializer;
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}();
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//# sourceMappingURL=serializer.js.map
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