1 | /**
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2 | * @license
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3 | * Copyright Google LLC All Rights Reserved.
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4 | *
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5 | * Use of this source code is governed by an MIT-style license that can be
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6 | * found in the LICENSE file at https://angular.io/license
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7 | */
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8 | (function (factory) {
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9 | if (typeof module === "object" && typeof module.exports === "object") {
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10 | var v = factory(require, exports);
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11 | if (v !== undefined) module.exports = v;
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12 | }
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13 | else if (typeof define === "function" && define.amd) {
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14 | define("@angular/language-service/src/typescript_host", ["require", "exports", "tslib", "@angular/compiler", "@angular/core", "path", "typescript/lib/tsserverlibrary", "@angular/language-service/src/language_service", "@angular/language-service/src/reflector_host", "@angular/language-service/src/template", "@angular/language-service/src/ts_utils"], factory);
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15 | }
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16 | })(function (require, exports) {
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17 | ;
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18 | Object.defineProperty(exports, "__esModule", { value: true });
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19 | exports.TypeScriptServiceHost = exports.DummyResourceLoader = exports.DummyHtmlParser = exports.createLanguageServiceFromTypescript = void 0;
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20 | var tslib_1 = require("tslib");
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21 | var compiler_1 = require("@angular/compiler");
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22 | var core_1 = require("@angular/core");
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23 | var path = require("path");
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24 | var tss = require("typescript/lib/tsserverlibrary");
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25 | var language_service_1 = require("@angular/language-service/src/language_service");
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26 | var reflector_host_1 = require("@angular/language-service/src/reflector_host");
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27 | var template_1 = require("@angular/language-service/src/template");
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28 | var ts_utils_1 = require("@angular/language-service/src/ts_utils");
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29 | /**
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30 | * Create a `LanguageServiceHost`
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31 | */
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32 | function createLanguageServiceFromTypescript(host, service) {
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33 | var ngHost = new TypeScriptServiceHost(host, service);
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34 | var ngServer = language_service_1.createLanguageService(ngHost);
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35 | return ngServer;
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36 | }
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37 | exports.createLanguageServiceFromTypescript = createLanguageServiceFromTypescript;
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38 | /**
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39 | * The language service never needs the normalized versions of the metadata. To avoid parsing
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40 | * the content and resolving references, return an empty file. This also allows normalizing
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41 | * template that are syntatically incorrect which is required to provide completions in
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42 | * syntactically incorrect templates.
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43 | */
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44 | var DummyHtmlParser = /** @class */ (function (_super) {
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45 | tslib_1.__extends(DummyHtmlParser, _super);
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46 | function DummyHtmlParser() {
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47 | return _super !== null && _super.apply(this, arguments) || this;
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48 | }
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49 | DummyHtmlParser.prototype.parse = function () {
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50 | return new compiler_1.ParseTreeResult([], []);
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51 | };
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52 | return DummyHtmlParser;
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53 | }(compiler_1.HtmlParser));
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54 | exports.DummyHtmlParser = DummyHtmlParser;
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55 | /**
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56 | * Avoid loading resources in the language servcie by using a dummy loader.
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57 | */
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58 | var DummyResourceLoader = /** @class */ (function (_super) {
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59 | tslib_1.__extends(DummyResourceLoader, _super);
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60 | function DummyResourceLoader() {
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61 | return _super !== null && _super.apply(this, arguments) || this;
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62 | }
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63 | DummyResourceLoader.prototype.get = function (_url) {
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64 | return Promise.resolve('');
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65 | };
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66 | return DummyResourceLoader;
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67 | }(compiler_1.ResourceLoader));
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68 | exports.DummyResourceLoader = DummyResourceLoader;
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69 | /**
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70 | * An implementation of a `LanguageServiceHost` for a TypeScript project.
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71 | *
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72 | * The `TypeScriptServiceHost` implements the Angular `LanguageServiceHost` using
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73 | * the TypeScript language services.
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74 | *
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75 | * @publicApi
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76 | */
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77 | var TypeScriptServiceHost = /** @class */ (function () {
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78 | function TypeScriptServiceHost(tsLsHost, tsLS) {
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79 | var _this = this;
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80 | this.tsLsHost = tsLsHost;
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81 | this.tsLS = tsLS;
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82 | this.staticSymbolCache = new compiler_1.StaticSymbolCache();
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83 | this.fileToComponent = new Map();
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84 | this.collectedErrors = new Map();
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85 | this.fileVersions = new Map();
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86 | this.lastProgram = undefined;
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87 | this.analyzedModules = {
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88 | files: [],
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89 | ngModuleByPipeOrDirective: new Map(),
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90 | ngModules: [],
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91 | };
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92 | this.summaryResolver = new compiler_1.AotSummaryResolver({
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93 | loadSummary: function (_filePath) {
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94 | return null;
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95 | },
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96 | isSourceFile: function (_sourceFilePath) {
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97 | return true;
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98 | },
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99 | toSummaryFileName: function (sourceFilePath) {
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100 | return sourceFilePath;
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101 | },
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102 | fromSummaryFileName: function (filePath) {
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103 | return filePath;
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104 | },
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105 | }, this.staticSymbolCache);
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106 | this.reflectorHost = new reflector_host_1.ReflectorHost(function () { return _this.program; }, tsLsHost);
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107 | this.staticSymbolResolver = new compiler_1.StaticSymbolResolver(this.reflectorHost, this.staticSymbolCache, this.summaryResolver, function (e, filePath) { return _this.collectError(e, filePath); });
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108 | this.urlResolver = {
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109 | resolve: function (baseUrl, url) {
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110 | // In practice, `directoryExists` is always defined.
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111 | // https://github.com/microsoft/TypeScript/blob/0b6c9254a850dd07056259d4eefca7721745af75/src/server/project.ts#L1608-L1614
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112 | if (tsLsHost.directoryExists(baseUrl)) {
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113 | return path.resolve(baseUrl, url);
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114 | }
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115 | return path.resolve(path.dirname(baseUrl), url);
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116 | }
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117 | };
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118 | }
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119 | Object.defineProperty(TypeScriptServiceHost.prototype, "resolver", {
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120 | /**
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121 | * Return the singleton instance of the MetadataResolver.
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122 | */
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123 | get: function () {
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124 | var _this = this;
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125 | if (this._resolver) {
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126 | return this._resolver;
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127 | }
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128 | // StaticReflector keeps its own private caches that are not clearable.
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129 | // We have no choice but to create a new instance to invalidate the caches.
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130 | // TODO: Revisit this when language service gets rewritten for Ivy.
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131 | var staticReflector = new compiler_1.StaticReflector(this.summaryResolver, this.staticSymbolResolver, [], // knownMetadataClasses
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132 | [], // knownMetadataFunctions
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133 | function (e, filePath) { return _this.collectError(e, filePath); });
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134 | // Because static reflector above is changed, we need to create a new
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135 | // resolver.
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136 | var moduleResolver = new compiler_1.NgModuleResolver(staticReflector);
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137 | var directiveResolver = new compiler_1.DirectiveResolver(staticReflector);
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138 | var pipeResolver = new compiler_1.PipeResolver(staticReflector);
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139 | var elementSchemaRegistry = new compiler_1.DomElementSchemaRegistry();
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140 | var resourceLoader = new DummyResourceLoader();
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141 | var htmlParser = new DummyHtmlParser();
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142 | // This tracks the CompileConfig in codegen.ts. Currently these options
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143 | // are hard-coded.
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144 | var config = new compiler_1.CompilerConfig({
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145 | defaultEncapsulation: core_1.ViewEncapsulation.Emulated,
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146 | useJit: false,
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147 | });
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148 | var directiveNormalizer = new compiler_1.DirectiveNormalizer(resourceLoader, this.urlResolver, htmlParser, config);
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149 | this._resolver = new compiler_1.CompileMetadataResolver(config, htmlParser, moduleResolver, directiveResolver, pipeResolver, new compiler_1.JitSummaryResolver(), elementSchemaRegistry, directiveNormalizer, new core_1.ɵConsole(), this.staticSymbolCache, staticReflector, function (error, type) { return _this.collectError(error, type && type.filePath); });
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150 | return this._resolver;
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151 | },
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152 | enumerable: false,
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153 | configurable: true
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154 | });
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155 | Object.defineProperty(TypeScriptServiceHost.prototype, "reflector", {
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156 | /**
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157 | * Return the singleton instance of the StaticReflector hosted in the
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158 | * MetadataResolver.
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159 | */
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160 | get: function () {
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161 | return this.resolver.getReflector();
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162 | },
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163 | enumerable: false,
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164 | configurable: true
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165 | });
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166 | /**
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167 | * Return all known external templates.
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168 | */
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169 | TypeScriptServiceHost.prototype.getExternalTemplates = function () {
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170 | return tslib_1.__spread(this.fileToComponent.keys());
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171 | };
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172 | /**
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173 | * Checks whether the program has changed and returns all analyzed modules.
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174 | * If program has changed, invalidate all caches and update fileToComponent
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175 | * and templateReferences.
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176 | * In addition to returning information about NgModules, this method plays the
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177 | * same role as 'synchronizeHostData' in tsserver.
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178 | */
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179 | TypeScriptServiceHost.prototype.getAnalyzedModules = function () {
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180 | var e_1, _a, e_2, _b;
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181 | if (this.upToDate()) {
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182 | return this.analyzedModules;
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183 | }
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184 | // Invalidate caches
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185 | this.fileToComponent.clear();
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186 | this.collectedErrors.clear();
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187 | this.resolver.clearCache();
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188 | var analyzeHost = {
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189 | isSourceFile: function (_filePath) {
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190 | return true;
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191 | }
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192 | };
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193 | var programFiles = this.program.getSourceFiles().map(function (sf) { return sf.fileName; });
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194 | try {
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195 | this.analyzedModules =
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196 | compiler_1.analyzeNgModules(programFiles, analyzeHost, this.staticSymbolResolver, this.resolver);
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197 | }
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198 | catch (e) {
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199 | // Analyzing modules may throw; in that case, reuse the old modules.
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200 | this.error("Analyzing NgModules failed. " + e);
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201 | return this.analyzedModules;
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202 | }
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203 | try {
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204 | // update template references and fileToComponent
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205 | for (var _c = tslib_1.__values(this.analyzedModules.ngModules), _d = _c.next(); !_d.done; _d = _c.next()) {
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206 | var ngModule = _d.value;
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207 | try {
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208 | for (var _e = (e_2 = void 0, tslib_1.__values(ngModule.declaredDirectives)), _f = _e.next(); !_f.done; _f = _e.next()) {
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209 | var directive = _f.value;
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210 | var metadata = this.resolver.getNonNormalizedDirectiveMetadata(directive.reference).metadata;
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211 | if (metadata.isComponent && metadata.template && metadata.template.templateUrl) {
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212 | var templateName = this.urlResolver.resolve(this.reflector.componentModuleUrl(directive.reference), metadata.template.templateUrl);
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213 | this.fileToComponent.set(templateName, directive.reference);
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214 | }
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215 | }
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216 | }
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217 | catch (e_2_1) { e_2 = { error: e_2_1 }; }
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218 | finally {
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219 | try {
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220 | if (_f && !_f.done && (_b = _e.return)) _b.call(_e);
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221 | }
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222 | finally { if (e_2) throw e_2.error; }
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223 | }
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224 | }
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225 | }
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226 | catch (e_1_1) { e_1 = { error: e_1_1 }; }
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227 | finally {
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228 | try {
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229 | if (_d && !_d.done && (_a = _c.return)) _a.call(_c);
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230 | }
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231 | finally { if (e_1) throw e_1.error; }
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232 | }
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233 | return this.analyzedModules;
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234 | };
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235 | /**
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236 | * Checks whether the program has changed, and invalidate static symbols in
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237 | * the source files that have changed.
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238 | * Returns true if modules are up-to-date, false otherwise.
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239 | * This should only be called by getAnalyzedModules().
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240 | */
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241 | TypeScriptServiceHost.prototype.upToDate = function () {
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242 | var e_3, _a, e_4, _b, e_5, _c;
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243 | var _d = this, lastProgram = _d.lastProgram, program = _d.program;
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244 | if (lastProgram === program) {
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245 | return true;
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246 | }
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247 | this.lastProgram = program;
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248 | // Even though the program has changed, it could be the case that none of
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249 | // the source files have changed. If all source files remain the same, then
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250 | // program is still up-to-date, and we should not invalidate caches.
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251 | var filesAdded = 0;
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252 | var filesChangedOrRemoved = [];
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253 | // Check if any source files have been added / changed since last computation.
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254 | var seen = new Set();
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255 | var ANGULAR_CORE = '@angular/core';
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256 | var corePath = this.reflectorHost.moduleNameToFileName(ANGULAR_CORE);
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257 | try {
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258 | for (var _e = tslib_1.__values(program.getSourceFiles()), _f = _e.next(); !_f.done; _f = _e.next()) {
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259 | var fileName = _f.value.fileName;
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260 | // If `@angular/core` is edited, the language service would have to be
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261 | // restarted, so ignore changes to `@angular/core`.
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262 | // When the StaticReflector is initialized at startup, it loads core
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263 | // symbols from @angular/core by calling initializeConversionMap(). This
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264 | // is only done once. If the file is invalidated, some of the core symbols
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265 | // will be lost permanently.
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266 | if (fileName === corePath) {
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267 | continue;
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268 | }
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269 | seen.add(fileName);
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270 | var version = this.tsLsHost.getScriptVersion(fileName);
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271 | var lastVersion = this.fileVersions.get(fileName);
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272 | if (lastVersion === undefined) {
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273 | filesAdded++;
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274 | this.fileVersions.set(fileName, version);
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275 | }
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276 | else if (version !== lastVersion) {
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277 | filesChangedOrRemoved.push(fileName); // changed
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278 | this.fileVersions.set(fileName, version);
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279 | }
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280 | }
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281 | }
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282 | catch (e_3_1) { e_3 = { error: e_3_1 }; }
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283 | finally {
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284 | try {
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285 | if (_f && !_f.done && (_a = _e.return)) _a.call(_e);
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286 | }
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287 | finally { if (e_3) throw e_3.error; }
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288 | }
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289 | try {
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290 | // Check if any source files have been removed since last computation.
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291 | for (var _g = tslib_1.__values(this.fileVersions), _h = _g.next(); !_h.done; _h = _g.next()) {
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292 | var _j = tslib_1.__read(_h.value, 1), fileName = _j[0];
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293 | if (!seen.has(fileName)) {
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294 | filesChangedOrRemoved.push(fileName); // removed
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295 | // Because Maps are iterated in insertion order, it is safe to delete
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296 | // entries from the same map while iterating.
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297 | // See https://stackoverflow.com/questions/35940216 and
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298 | // https://www.ecma-international.org/ecma-262/10.0/index.html#sec-map.prototype.foreach
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299 | this.fileVersions.delete(fileName);
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300 | }
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301 | }
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302 | }
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303 | catch (e_4_1) { e_4 = { error: e_4_1 }; }
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304 | finally {
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305 | try {
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306 | if (_h && !_h.done && (_b = _g.return)) _b.call(_g);
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307 | }
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308 | finally { if (e_4) throw e_4.error; }
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309 | }
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310 | try {
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311 | for (var filesChangedOrRemoved_1 = tslib_1.__values(filesChangedOrRemoved), filesChangedOrRemoved_1_1 = filesChangedOrRemoved_1.next(); !filesChangedOrRemoved_1_1.done; filesChangedOrRemoved_1_1 = filesChangedOrRemoved_1.next()) {
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312 | var fileName = filesChangedOrRemoved_1_1.value;
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313 | var symbols = this.staticSymbolResolver.invalidateFile(fileName);
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314 | this.reflector.invalidateSymbols(symbols);
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315 | }
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316 | }
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317 | catch (e_5_1) { e_5 = { error: e_5_1 }; }
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318 | finally {
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319 | try {
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320 | if (filesChangedOrRemoved_1_1 && !filesChangedOrRemoved_1_1.done && (_c = filesChangedOrRemoved_1.return)) _c.call(filesChangedOrRemoved_1);
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321 | }
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322 | finally { if (e_5) throw e_5.error; }
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323 | }
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324 | // Program is up-to-date iff no files are added, changed, or removed.
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325 | return filesAdded === 0 && filesChangedOrRemoved.length === 0;
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326 | };
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327 | /**
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328 | * Find all templates in the specified `file`.
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329 | * @param fileName TS or HTML file
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330 | */
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331 | TypeScriptServiceHost.prototype.getTemplates = function (fileName) {
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332 | var _this = this;
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333 | var results = [];
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334 | if (fileName.endsWith('.ts')) {
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335 | // Find every template string in the file
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336 | var visit_1 = function (child) {
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337 | var template = _this.getInternalTemplate(child);
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338 | if (template) {
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339 | results.push(template);
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340 | }
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341 | else {
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342 | tss.forEachChild(child, visit_1);
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343 | }
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344 | };
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345 | var sourceFile = this.getSourceFile(fileName);
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346 | if (sourceFile) {
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347 | tss.forEachChild(sourceFile, visit_1);
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348 | }
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349 | }
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350 | else {
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351 | var template = this.getExternalTemplate(fileName);
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352 | if (template) {
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353 | results.push(template);
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354 | }
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355 | }
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356 | return results;
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357 | };
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358 | /**
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359 | * Return metadata about all class declarations in the file that are Angular
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360 | * directives. Potential matches are `@NgModule`, `@Component`, `@Directive`,
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361 | * `@Pipes`, etc. class declarations.
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362 | *
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363 | * @param fileName TS file
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364 | */
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365 | TypeScriptServiceHost.prototype.getDeclarations = function (fileName) {
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366 | var _this = this;
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367 | if (!fileName.endsWith('.ts')) {
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368 | return [];
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369 | }
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370 | var sourceFile = this.getSourceFile(fileName);
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371 | if (!sourceFile) {
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372 | return [];
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373 | }
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374 | var results = [];
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375 | var visit = function (child) {
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376 | var candidate = ts_utils_1.getDirectiveClassLike(child);
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377 | if (candidate) {
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378 | var classId = candidate.classId;
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379 | var declarationSpan = spanOf(classId);
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380 | var className = classId.getText();
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381 | var classSymbol = _this.reflector.getStaticSymbol(sourceFile.fileName, className);
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382 | // Ask the resolver to check if candidate is actually Angular directive
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383 | if (!_this.resolver.isDirective(classSymbol)) {
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384 | return;
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385 | }
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386 | var data = _this.resolver.getNonNormalizedDirectiveMetadata(classSymbol);
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387 | if (!data) {
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388 | return;
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389 | }
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390 | results.push({
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391 | type: classSymbol,
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392 | declarationSpan: declarationSpan,
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393 | metadata: data.metadata,
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394 | errors: _this.getCollectedErrors(declarationSpan, sourceFile),
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395 | });
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396 | }
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397 | else {
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398 | child.forEachChild(visit);
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399 | }
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400 | };
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401 | tss.forEachChild(sourceFile, visit);
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402 | return results;
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403 | };
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404 | TypeScriptServiceHost.prototype.getSourceFile = function (fileName) {
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405 | if (!fileName.endsWith('.ts')) {
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406 | throw new Error("Non-TS source file requested: " + fileName);
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407 | }
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408 | return this.program.getSourceFile(fileName);
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409 | };
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410 | Object.defineProperty(TypeScriptServiceHost.prototype, "program", {
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411 | get: function () {
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412 | var program = this.tsLS.getProgram();
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413 | if (!program) {
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414 | // Program is very very unlikely to be undefined.
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415 | throw new Error('No program in language service!');
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416 | }
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417 | return program;
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418 | },
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419 | enumerable: false,
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420 | configurable: true
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421 | });
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422 | /**
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423 | * Return the TemplateSource if `node` is a template node.
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424 | *
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425 | * For example,
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426 | *
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427 | * @Component({
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428 | * template: '<div></div>' <-- template node
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429 | * })
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430 | * class AppComponent {}
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431 | * ^---- class declaration node
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432 | *
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433 | * @param node Potential template node
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434 | */
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435 | TypeScriptServiceHost.prototype.getInternalTemplate = function (node) {
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436 | if (!tss.isStringLiteralLike(node)) {
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437 | return;
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438 | }
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439 | var tmplAsgn = ts_utils_1.getPropertyAssignmentFromValue(node, 'template');
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440 | if (!tmplAsgn) {
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441 | return;
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442 | }
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443 | var classDecl = ts_utils_1.getClassDeclFromDecoratorProp(tmplAsgn);
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444 | if (!classDecl || !classDecl.name) { // Does not handle anonymous class
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445 | return;
|
446 | }
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447 | var fileName = node.getSourceFile().fileName;
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448 | var classSymbol = this.reflector.getStaticSymbol(fileName, classDecl.name.text);
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449 | return new template_1.InlineTemplate(node, classDecl, classSymbol, this);
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450 | };
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451 | /**
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452 | * Return the external template for `fileName`.
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453 | * @param fileName HTML file
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454 | */
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455 | TypeScriptServiceHost.prototype.getExternalTemplate = function (fileName) {
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456 | // First get the text for the template
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457 | var snapshot = this.tsLsHost.getScriptSnapshot(fileName);
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458 | if (!snapshot) {
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459 | return;
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460 | }
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461 | var source = snapshot.getText(0, snapshot.getLength());
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462 | // Next find the component class symbol
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463 | var classSymbol = this.fileToComponent.get(fileName);
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464 | if (!classSymbol) {
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465 | return;
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466 | }
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467 | // Then use the class symbol to find the actual ts.ClassDeclaration node
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468 | var sourceFile = this.getSourceFile(classSymbol.filePath);
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469 | if (!sourceFile) {
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470 | return;
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471 | }
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472 | // TODO: This only considers top-level class declarations in a source file.
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473 | // This would not find a class declaration in a namespace, for example.
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474 | var classDecl = sourceFile.forEachChild(function (child) {
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475 | if (tss.isClassDeclaration(child) && child.name && child.name.text === classSymbol.name) {
|
476 | return child;
|
477 | }
|
478 | });
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479 | if (!classDecl) {
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480 | return;
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481 | }
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482 | return new template_1.ExternalTemplate(source, fileName, classDecl, classSymbol, this);
|
483 | };
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484 | TypeScriptServiceHost.prototype.collectError = function (error, filePath) {
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485 | if (filePath) {
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486 | var errors = this.collectedErrors.get(filePath);
|
487 | if (!errors) {
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488 | errors = [];
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489 | this.collectedErrors.set(filePath, errors);
|
490 | }
|
491 | errors.push(error);
|
492 | }
|
493 | };
|
494 | TypeScriptServiceHost.prototype.getCollectedErrors = function (defaultSpan, sourceFile) {
|
495 | var errors = this.collectedErrors.get(sourceFile.fileName);
|
496 | if (!errors) {
|
497 | return [];
|
498 | }
|
499 | // TODO: Add better typings for the errors
|
500 | return errors.map(function (e) {
|
501 | var line = e.line || (e.position && e.position.line);
|
502 | var column = e.column || (e.position && e.position.column);
|
503 | var span = spanAt(sourceFile, line, column) || defaultSpan;
|
504 | if (compiler_1.isFormattedError(e)) {
|
505 | return errorToDiagnosticWithChain(e, span);
|
506 | }
|
507 | return { message: e.message, span: span };
|
508 | });
|
509 | };
|
510 | /**
|
511 | * Return the parsed template for the template at the specified `position`.
|
512 | * @param fileName TS or HTML file
|
513 | * @param position Position of the template in the TS file, otherwise ignored.
|
514 | */
|
515 | TypeScriptServiceHost.prototype.getTemplateAstAtPosition = function (fileName, position) {
|
516 | var template;
|
517 | if (fileName.endsWith('.ts')) {
|
518 | var sourceFile = this.getSourceFile(fileName);
|
519 | if (!sourceFile) {
|
520 | return;
|
521 | }
|
522 | // Find the node that most closely matches the position
|
523 | var node = ts_utils_1.findTightestNode(sourceFile, position);
|
524 | if (!node) {
|
525 | return;
|
526 | }
|
527 | template = this.getInternalTemplate(node);
|
528 | }
|
529 | else {
|
530 | template = this.getExternalTemplate(fileName);
|
531 | }
|
532 | if (!template) {
|
533 | return;
|
534 | }
|
535 | return this.getTemplateAst(template);
|
536 | };
|
537 | /**
|
538 | * Find the NgModule which the directive associated with the `classSymbol`
|
539 | * belongs to, then return its schema and transitive directives and pipes.
|
540 | * @param classSymbol Angular Symbol that defines a directive
|
541 | */
|
542 | TypeScriptServiceHost.prototype.getModuleMetadataForDirective = function (classSymbol) {
|
543 | var e_6, _a, e_7, _b, _c;
|
544 | var result = {
|
545 | directives: [],
|
546 | pipes: [],
|
547 | schemas: [],
|
548 | };
|
549 | // First find which NgModule the directive belongs to.
|
550 | var ngModule = this.analyzedModules.ngModuleByPipeOrDirective.get(classSymbol) ||
|
551 | findSuitableDefaultModule(this.analyzedModules);
|
552 | if (!ngModule) {
|
553 | return result;
|
554 | }
|
555 | // Then gather all transitive directives and pipes.
|
556 | var _d = ngModule.transitiveModule, directives = _d.directives, pipes = _d.pipes;
|
557 | try {
|
558 | for (var directives_1 = tslib_1.__values(directives), directives_1_1 = directives_1.next(); !directives_1_1.done; directives_1_1 = directives_1.next()) {
|
559 | var directive = directives_1_1.value;
|
560 | var data = this.resolver.getNonNormalizedDirectiveMetadata(directive.reference);
|
561 | if (data) {
|
562 | result.directives.push(data.metadata.toSummary());
|
563 | }
|
564 | }
|
565 | }
|
566 | catch (e_6_1) { e_6 = { error: e_6_1 }; }
|
567 | finally {
|
568 | try {
|
569 | if (directives_1_1 && !directives_1_1.done && (_a = directives_1.return)) _a.call(directives_1);
|
570 | }
|
571 | finally { if (e_6) throw e_6.error; }
|
572 | }
|
573 | try {
|
574 | for (var pipes_1 = tslib_1.__values(pipes), pipes_1_1 = pipes_1.next(); !pipes_1_1.done; pipes_1_1 = pipes_1.next()) {
|
575 | var pipe = pipes_1_1.value;
|
576 | var metadata = this.resolver.getOrLoadPipeMetadata(pipe.reference);
|
577 | result.pipes.push(metadata.toSummary());
|
578 | }
|
579 | }
|
580 | catch (e_7_1) { e_7 = { error: e_7_1 }; }
|
581 | finally {
|
582 | try {
|
583 | if (pipes_1_1 && !pipes_1_1.done && (_b = pipes_1.return)) _b.call(pipes_1);
|
584 | }
|
585 | finally { if (e_7) throw e_7.error; }
|
586 | }
|
587 | (_c = result.schemas).push.apply(_c, tslib_1.__spread(ngModule.schemas));
|
588 | return result;
|
589 | };
|
590 | /**
|
591 | * Parse the `template` and return its AST, if any.
|
592 | * @param template template to be parsed
|
593 | */
|
594 | TypeScriptServiceHost.prototype.getTemplateAst = function (template) {
|
595 | var classSymbol = template.type, fileName = template.fileName;
|
596 | var data = this.resolver.getNonNormalizedDirectiveMetadata(classSymbol);
|
597 | if (!data) {
|
598 | return;
|
599 | }
|
600 | var htmlParser = new compiler_1.HtmlParser();
|
601 | var expressionParser = new compiler_1.Parser(new compiler_1.Lexer());
|
602 | var parser = new compiler_1.TemplateParser(new compiler_1.CompilerConfig(), this.reflector, expressionParser, new compiler_1.DomElementSchemaRegistry(), htmlParser, null, // console
|
603 | [] // tranforms
|
604 | );
|
605 | var htmlResult = htmlParser.parse(template.source, fileName, {
|
606 | tokenizeExpansionForms: true,
|
607 | preserveLineEndings: true,
|
608 | });
|
609 | var _a = this.getModuleMetadataForDirective(classSymbol), directives = _a.directives, pipes = _a.pipes, schemas = _a.schemas;
|
610 | var parseResult = parser.tryParseHtml(htmlResult, data.metadata, directives, pipes, schemas);
|
611 | if (!parseResult.templateAst) {
|
612 | return;
|
613 | }
|
614 | return {
|
615 | htmlAst: htmlResult.rootNodes,
|
616 | templateAst: parseResult.templateAst,
|
617 | directive: data.metadata,
|
618 | directives: directives,
|
619 | pipes: pipes,
|
620 | parseErrors: parseResult.errors,
|
621 | expressionParser: expressionParser,
|
622 | template: template,
|
623 | };
|
624 | };
|
625 | /**
|
626 | * Log the specified `msg` to file at INFO level. If logging is not enabled
|
627 | * this method is a no-op.
|
628 | * @param msg Log message
|
629 | */
|
630 | TypeScriptServiceHost.prototype.log = function (msg) {
|
631 | if (this.tsLsHost.log) {
|
632 | this.tsLsHost.log(msg);
|
633 | }
|
634 | };
|
635 | /**
|
636 | * Log the specified `msg` to file at ERROR level. If logging is not enabled
|
637 | * this method is a no-op.
|
638 | * @param msg error message
|
639 | */
|
640 | TypeScriptServiceHost.prototype.error = function (msg) {
|
641 | if (this.tsLsHost.error) {
|
642 | this.tsLsHost.error(msg);
|
643 | }
|
644 | };
|
645 | /**
|
646 | * Log debugging info to file at INFO level, only if verbose setting is turned
|
647 | * on. Otherwise, this method is a no-op.
|
648 | * @param msg debugging message
|
649 | */
|
650 | TypeScriptServiceHost.prototype.debug = function (msg) {
|
651 | var project = this.tsLsHost;
|
652 | if (!project.projectService) {
|
653 | // tsLsHost is not a Project
|
654 | return;
|
655 | }
|
656 | var logger = project.projectService.logger;
|
657 | if (logger.hasLevel(tss.server.LogLevel.verbose)) {
|
658 | logger.info(msg);
|
659 | }
|
660 | };
|
661 | return TypeScriptServiceHost;
|
662 | }());
|
663 | exports.TypeScriptServiceHost = TypeScriptServiceHost;
|
664 | function findSuitableDefaultModule(modules) {
|
665 | var e_8, _a;
|
666 | var result = undefined;
|
667 | var resultSize = 0;
|
668 | try {
|
669 | for (var _b = tslib_1.__values(modules.ngModules), _c = _b.next(); !_c.done; _c = _b.next()) {
|
670 | var module_1 = _c.value;
|
671 | var moduleSize = module_1.transitiveModule.directives.length;
|
672 | if (moduleSize > resultSize) {
|
673 | result = module_1;
|
674 | resultSize = moduleSize;
|
675 | }
|
676 | }
|
677 | }
|
678 | catch (e_8_1) { e_8 = { error: e_8_1 }; }
|
679 | finally {
|
680 | try {
|
681 | if (_c && !_c.done && (_a = _b.return)) _a.call(_b);
|
682 | }
|
683 | finally { if (e_8) throw e_8.error; }
|
684 | }
|
685 | return result;
|
686 | }
|
687 | function spanOf(node) {
|
688 | return { start: node.getStart(), end: node.getEnd() };
|
689 | }
|
690 | function spanAt(sourceFile, line, column) {
|
691 | if (line != null && column != null) {
|
692 | var position_1 = tss.getPositionOfLineAndCharacter(sourceFile, line, column);
|
693 | var findChild = function findChild(node) {
|
694 | if (node.kind > tss.SyntaxKind.LastToken && node.pos <= position_1 && node.end > position_1) {
|
695 | var betterNode = tss.forEachChild(node, findChild);
|
696 | return betterNode || node;
|
697 | }
|
698 | };
|
699 | var node = tss.forEachChild(sourceFile, findChild);
|
700 | if (node) {
|
701 | return { start: node.getStart(), end: node.getEnd() };
|
702 | }
|
703 | }
|
704 | }
|
705 | function convertChain(chain) {
|
706 | return { message: chain.message, next: chain.next ? chain.next.map(convertChain) : undefined };
|
707 | }
|
708 | function errorToDiagnosticWithChain(error, span) {
|
709 | return { message: error.chain ? convertChain(error.chain) : error.message, span: span };
|
710 | }
|
711 | });
|
712 | //# 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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {analyzeNgModules, AotSummaryResolver, CompileDirectiveSummary, CompileMetadataResolver, CompileNgModuleMetadata, CompilePipeSummary, CompilerConfig, DirectiveNormalizer, DirectiveResolver, DomElementSchemaRegistry, FormattedError, FormattedMessageChain, HtmlParser, isFormattedError, JitSummaryResolver, Lexer, NgAnalyzedModules, NgModuleResolver, Parser, ParseTreeResult, PipeResolver, ResourceLoader, StaticReflector, StaticSymbol, StaticSymbolCache, StaticSymbolResolver, TemplateParser, UrlResolver} from '@angular/compiler';\nimport {SchemaMetadata, ViewEncapsulation, ɵConsole as Console} from '@angular/core';\nimport * as path from 'path';\nimport * as tss from 'typescript/lib/tsserverlibrary';\n\nimport {createLanguageService} from './language_service';\nimport 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To avoid parsing\n * the content and resolving references, return an empty file. This also allows normalizing\n * template that are syntatically incorrect which is required to provide completions in\n * syntactically incorrect templates.\n */\nexport class DummyHtmlParser extends HtmlParser {\n  parse(): ParseTreeResult {\n    return new ParseTreeResult([], []);\n  }\n}\n\n/**\n * Avoid loading resources in the language servcie by using a dummy loader.\n */\nexport class DummyResourceLoader extends ResourceLoader {\n  get(_url: string): Promise<string> {\n    return Promise.resolve('');\n  }\n}\n\n/**\n * An implementation of a `LanguageServiceHost` for a TypeScript project.\n *\n * The `TypeScriptServiceHost` implements the Angular `LanguageServiceHost` using\n * the TypeScript language services.\n *\n * @publicApi\n */\nexport class TypeScriptServiceHost implements LanguageServiceHost {\n  private readonly summaryResolver: AotSummaryResolver;\n  private readonly reflectorHost: ReflectorHost;\n  private readonly staticSymbolResolver: StaticSymbolResolver;\n\n  private readonly staticSymbolCache = new StaticSymbolCache();\n  private readonly fileToComponent = new Map<string, StaticSymbol>();\n  private readonly collectedErrors = new Map<string, any[]>();\n  private readonly fileVersions = new Map<string, string>();\n  private readonly urlResolver: UrlResolver;\n\n  private lastProgram: tss.Program|undefined = undefined;\n  private analyzedModules: NgAnalyzedModules = {\n    files: [],\n    ngModuleByPipeOrDirective: new Map(),\n    ngModules: [],\n  };\n\n  constructor(readonly tsLsHost: tss.LanguageServiceHost, readonly tsLS: tss.LanguageService) {\n    this.summaryResolver = new AotSummaryResolver(\n        {\n          loadSummary(_filePath: string) {\n            return null;\n          },\n          isSourceFile(_sourceFilePath: string) {\n            return true;\n          },\n          toSummaryFileName(sourceFilePath: string) {\n            return sourceFilePath;\n          },\n          fromSummaryFileName(filePath: string): string {\n            return filePath;\n          },\n        },\n        this.staticSymbolCache);\n    this.reflectorHost = new ReflectorHost(() => this.program, tsLsHost);\n    this.staticSymbolResolver = new StaticSymbolResolver(\n        this.reflectorHost, this.staticSymbolCache, this.summaryResolver,\n        (e, filePath) => this.collectError(e, filePath));\n    this.urlResolver = {\n      resolve: (baseUrl: string, url: string) => {\n        // In practice, `directoryExists` is always defined.\n        // https://github.com/microsoft/TypeScript/blob/0b6c9254a850dd07056259d4eefca7721745af75/src/server/project.ts#L1608-L1614\n        if (tsLsHost.directoryExists!(baseUrl)) {\n          return path.resolve(baseUrl, url);\n        }\n        return path.resolve(path.dirname(baseUrl), url);\n      }\n    };\n  }\n\n  // The resolver is instantiated lazily and should not be accessed directly.\n  // Instead, call the resolver getter. The instantiation of the resolver also\n  // requires instantiation of the StaticReflector, and the latter requires\n  // resolution of core Angular symbols. Module resolution should not be done\n  // during instantiation to avoid cyclic dependency between the plugin and the\n  // containing Project, so the Singleton pattern is used here.\n  private _resolver: CompileMetadataResolver|undefined;\n\n  /**\n   * Return the singleton instance of the MetadataResolver.\n   */\n  private get resolver(): CompileMetadataResolver {\n    if (this._resolver) {\n      return this._resolver;\n    }\n    // StaticReflector keeps its own private caches that are not clearable.\n    // We have no choice but to create a new instance to invalidate the caches.\n    // TODO: Revisit this when language service gets rewritten for Ivy.\n    const staticReflector = new StaticReflector(\n        this.summaryResolver, this.staticSymbolResolver,\n        [],  // knownMetadataClasses\n        [],  // knownMetadataFunctions\n        (e, filePath) => this.collectError(e, filePath));\n    // Because static reflector above is changed, we need to create a new\n    // resolver.\n    const moduleResolver = new NgModuleResolver(staticReflector);\n    const directiveResolver = new DirectiveResolver(staticReflector);\n    const pipeResolver = new PipeResolver(staticReflector);\n    const elementSchemaRegistry = new DomElementSchemaRegistry();\n    const resourceLoader = new DummyResourceLoader();\n    const htmlParser = new DummyHtmlParser();\n    // This tracks the CompileConfig in codegen.ts. 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If all source files remain the same, then\n    // program is still up-to-date, and we should not invalidate caches.\n    let filesAdded = 0;\n    const filesChangedOrRemoved: string[] = [];\n\n    // Check if any source files have been added / changed since last computation.\n    const seen = new Set<string>();\n    const ANGULAR_CORE = '@angular/core';\n    const corePath = this.reflectorHost.moduleNameToFileName(ANGULAR_CORE);\n    for (const {fileName} of program.getSourceFiles()) {\n      // If `@angular/core` is edited, the language service would have to be\n      // restarted, so ignore changes to `@angular/core`.\n      // When the StaticReflector is initialized at startup, it loads core\n      // symbols from @angular/core by calling initializeConversionMap(). This\n      // is only done once. If the file is invalidated, some of the core symbols\n      // will be lost permanently.\n      if (fileName === corePath) {\n        continue;\n      }\n      seen.add(fileName);\n      const version = this.tsLsHost.getScriptVersion(fileName);\n      const lastVersion = this.fileVersions.get(fileName);\n      if (lastVersion === undefined) {\n        filesAdded++;\n        this.fileVersions.set(fileName, version);\n      } else if (version !== lastVersion) {\n        filesChangedOrRemoved.push(fileName);  // changed\n        this.fileVersions.set(fileName, version);\n      }\n    }\n\n    // Check if any source files have been removed since last computation.\n    for (const [fileName] of this.fileVersions) {\n      if (!seen.has(fileName)) {\n        filesChangedOrRemoved.push(fileName);  // removed\n        // Because Maps are iterated in insertion order, it is safe to delete\n        // entries from the same map while iterating.\n        // See https://stackoverflow.com/questions/35940216 and\n        // https://www.ecma-international.org/ecma-262/10.0/index.html#sec-map.prototype.foreach\n        this.fileVersions.delete(fileName);\n      }\n    }\n\n    for (const fileName of filesChangedOrRemoved) {\n      const symbols = this.staticSymbolResolver.invalidateFile(fileName);\n      this.reflector.invalidateSymbols(symbols);\n    }\n\n    // Program is up-to-date iff no files are added, changed, or removed.\n    return filesAdded === 0 && filesChangedOrRemoved.length === 0;\n  }\n\n  /**\n   * Find all templates in the specified `file`.\n   * @param fileName TS or HTML file\n   */\n  getTemplates(fileName: string): TemplateSource[] {\n    const results: TemplateSource[] = [];\n    if (fileName.endsWith('.ts')) {\n      // Find every template string in the file\n      const visit = (child: tss.Node) => {\n        const template = this.getInternalTemplate(child);\n        if (template) {\n          results.push(template);\n        } else {\n          tss.forEachChild(child, visit);\n        }\n      };\n      const sourceFile = this.getSourceFile(fileName);\n      if (sourceFile) {\n        tss.forEachChild(sourceFile, visit);\n      }\n    } else {\n      const template = this.getExternalTemplate(fileName);\n      if (template) {\n        results.push(template);\n      }\n    }\n    return results;\n  }\n\n  /**\n   * Return metadata about all class declarations in the file that are Angular\n   * directives. Potential matches are `@NgModule`, `@Component`, `@Directive`,\n   * `@Pipes`, etc. class declarations.\n   *\n   * @param fileName TS file\n   */\n  getDeclarations(fileName: string): Declaration[] {\n    if (!fileName.endsWith('.ts')) {\n      return [];\n    }\n    const sourceFile = this.getSourceFile(fileName);\n    if (!sourceFile) {\n      return [];\n    }\n    const results: Declaration[] = [];\n    const visit = (child: tss.Node) => {\n      const candidate = getDirectiveClassLike(child);\n      if (candidate) {\n        const {classId} = candidate;\n        const declarationSpan = spanOf(classId);\n        const className = classId.getText();\n        const classSymbol = this.reflector.getStaticSymbol(sourceFile.fileName, className);\n        // Ask the resolver to check if candidate is actually Angular directive\n        if (!this.resolver.isDirective(classSymbol)) {\n          return;\n        }\n        const data = this.resolver.getNonNormalizedDirectiveMetadata(classSymbol);\n        if (!data) {\n          return;\n        }\n        results.push({\n          type: classSymbol,\n          declarationSpan,\n          metadata: data.metadata,\n          errors: this.getCollectedErrors(declarationSpan, sourceFile),\n        });\n      } else {\n        child.forEachChild(visit);\n      }\n    };\n    tss.forEachChild(sourceFile, visit);\n\n    return results;\n  }\n\n  getSourceFile(fileName: string): tss.SourceFile|undefined {\n    if (!fileName.endsWith('.ts')) {\n      throw new Error(`Non-TS source file requested: ${fileName}`);\n    }\n    return this.program.getSourceFile(fileName);\n  }\n\n  get program(): tss.Program {\n    const program = this.tsLS.getProgram();\n    if (!program) {\n      // Program is very very unlikely to be undefined.\n      throw new Error('No program in language service!');\n    }\n    return program;\n  }\n\n  /**\n   * Return the TemplateSource if `node` is a template node.\n   *\n   * For example,\n   *\n   * @Component({\n   *   template: '<div></div>' <-- template node\n   * })\n   * class AppComponent {}\n   *           ^---- class declaration node\n   *\n   * @param node Potential template node\n   */\n  private getInternalTemplate(node: tss.Node): TemplateSource|undefined {\n    if (!tss.isStringLiteralLike(node)) {\n      return;\n    }\n    const tmplAsgn = getPropertyAssignmentFromValue(node, 'template');\n    if (!tmplAsgn) {\n      return;\n    }\n    const classDecl = getClassDeclFromDecoratorProp(tmplAsgn);\n    if (!classDecl || !classDecl.name) {  // Does not handle anonymous class\n      return;\n    }\n    const fileName = node.getSourceFile().fileName;\n    const classSymbol = this.reflector.getStaticSymbol(fileName, classDecl.name.text);\n    return new InlineTemplate(node, classDecl, classSymbol, this);\n  }\n\n  /**\n   * Return the external template for `fileName`.\n   * @param fileName HTML file\n   */\n  private getExternalTemplate(fileName: string): TemplateSource|undefined {\n    // First get the text for the template\n    const snapshot = this.tsLsHost.getScriptSnapshot(fileName);\n    if (!snapshot) {\n      return;\n    }\n    const source = snapshot.getText(0, snapshot.getLength());\n    // Next find the component class symbol\n    const classSymbol = this.fileToComponent.get(fileName);\n    if (!classSymbol) {\n      return;\n    }\n    // Then use the class symbol to find the actual ts.ClassDeclaration node\n    const sourceFile = this.getSourceFile(classSymbol.filePath);\n    if (!sourceFile) {\n      return;\n    }\n    // TODO: This only considers top-level class declarations in a source file.\n    // This would not find a class declaration in a namespace, for example.\n    const classDecl = sourceFile.forEachChild((child) => {\n      if (tss.isClassDeclaration(child) && child.name && child.name.text === classSymbol.name) {\n        return child;\n      }\n    });\n    if (!classDecl) {\n      return;\n    }\n    return new ExternalTemplate(source, fileName, classDecl, classSymbol, this);\n  }\n\n  private collectError(error: any, filePath?: string) {\n    if (filePath) {\n      let errors = this.collectedErrors.get(filePath);\n      if (!errors) {\n        errors = [];\n        this.collectedErrors.set(filePath, errors);\n      }\n      errors.push(error);\n    }\n  }\n\n  private getCollectedErrors(defaultSpan: Span, sourceFile: tss.SourceFile): DeclarationError[] {\n    const errors = this.collectedErrors.get(sourceFile.fileName);\n    if (!errors) {\n      return [];\n    }\n    // TODO: Add better typings for the errors\n    return errors.map((e: any) => {\n      const line = e.line || (e.position && e.position.line);\n      const column = e.column || (e.position && e.position.column);\n      const span = spanAt(sourceFile, line, column) || defaultSpan;\n      if (isFormattedError(e)) {\n        return errorToDiagnosticWithChain(e, span);\n      }\n      return {message: e.message, span};\n    });\n  }\n\n  /**\n   * Return the parsed template for the template at the specified `position`.\n   * @param fileName TS or HTML file\n   * @param position Position of the template in the TS file, otherwise ignored.\n   */\n  getTemplateAstAtPosition(fileName: string, position: number): AstResult|undefined {\n    let template: TemplateSource|undefined;\n    if (fileName.endsWith('.ts')) {\n      const sourceFile = this.getSourceFile(fileName);\n      if (!sourceFile) {\n        return;\n      }\n      // Find the node that most closely matches the position\n      const node = findTightestNode(sourceFile, position);\n      if (!node) {\n        return;\n      }\n      template = this.getInternalTemplate(node);\n    } else {\n      template = this.getExternalTemplate(fileName);\n    }\n    if (!template) {\n      return;\n    }\n    return this.getTemplateAst(template);\n  }\n\n  /**\n   * Find the NgModule which the directive associated with the `classSymbol`\n   * belongs to, then return its schema and transitive directives and pipes.\n   * @param classSymbol Angular Symbol that defines a directive\n   */\n  private getModuleMetadataForDirective(classSymbol: StaticSymbol) {\n    const result = {\n      directives: [] as CompileDirectiveSummary[],\n      pipes: [] as CompilePipeSummary[],\n      schemas: [] as SchemaMetadata[],\n    };\n    // First find which NgModule the directive belongs to.\n    const ngModule = this.analyzedModules.ngModuleByPipeOrDirective.get(classSymbol) ||\n        findSuitableDefaultModule(this.analyzedModules);\n    if (!ngModule) {\n      return result;\n    }\n    // Then gather all transitive directives and pipes.\n    const {directives, pipes} = ngModule.transitiveModule;\n    for (const directive of directives) {\n      const data = this.resolver.getNonNormalizedDirectiveMetadata(directive.reference);\n      if (data) {\n        result.directives.push(data.metadata.toSummary());\n      }\n    }\n    for (const pipe of pipes) {\n      const metadata = this.resolver.getOrLoadPipeMetadata(pipe.reference);\n      result.pipes.push(metadata.toSummary());\n    }\n    result.schemas.push(...ngModule.schemas);\n    return result;\n  }\n\n  /**\n   * Parse the `template` and return its AST, if any.\n   * @param template template to be parsed\n   */\n  getTemplateAst(template: TemplateSource): AstResult|undefined {\n    const {type: classSymbol, fileName} = template;\n    const data = this.resolver.getNonNormalizedDirectiveMetadata(classSymbol);\n    if (!data) {\n      return;\n    }\n    const htmlParser = new HtmlParser();\n    const expressionParser = new Parser(new Lexer());\n    const parser = new TemplateParser(\n        new CompilerConfig(), this.reflector, expressionParser, new DomElementSchemaRegistry(),\n        htmlParser,\n        null,  // console\n        []     // tranforms\n    );\n    const htmlResult = htmlParser.parse(template.source, fileName, {\n      tokenizeExpansionForms: true,\n      preserveLineEndings: true,  // do not convert CRLF to LF\n    });\n    const {directives, pipes, schemas} = this.getModuleMetadataForDirective(classSymbol);\n    const parseResult = parser.tryParseHtml(htmlResult, data.metadata, directives, pipes, schemas);\n    if (!parseResult.templateAst) {\n      return;\n    }\n    return {\n      htmlAst: htmlResult.rootNodes,\n      templateAst: parseResult.templateAst,\n      directive: data.metadata,\n      directives,\n      pipes,\n      parseErrors: parseResult.errors,\n      expressionParser,\n      template,\n    };\n  }\n\n  /**\n   * Log the specified `msg` to file at INFO level. If logging is not enabled\n   * this method is a no-op.\n   * @param msg Log message\n   */\n  log(msg: string) {\n    if (this.tsLsHost.log) {\n      this.tsLsHost.log(msg);\n    }\n  }\n\n  /**\n   * Log the specified `msg` to file at ERROR level. If logging is not enabled\n   * this method is a no-op.\n   * @param msg error message\n   */\n  error(msg: string) {\n    if (this.tsLsHost.error) {\n      this.tsLsHost.error(msg);\n    }\n  }\n\n  /**\n   * Log debugging info to file at INFO level, only if verbose setting is turned\n   * on. Otherwise, this method is a no-op.\n   * @param msg debugging message\n   */\n  debug(msg: string) {\n    const project = this.tsLsHost as tss.server.Project;\n    if (!project.projectService) {\n      // tsLsHost is not a Project\n      return;\n    }\n    const {logger} = project.projectService;\n    if (logger.hasLevel(tss.server.LogLevel.verbose)) {\n      logger.info(msg);\n    }\n  }\n}\n\nfunction findSuitableDefaultModule(modules: NgAnalyzedModules): CompileNgModuleMetadata|undefined {\n  let result: CompileNgModuleMetadata|undefined = undefined;\n  let resultSize = 0;\n  for (const module of modules.ngModules) {\n    const moduleSize = module.transitiveModule.directives.length;\n    if (moduleSize > resultSize) {\n      result = module;\n      resultSize = moduleSize;\n    }\n  }\n  return result;\n}\n\nfunction spanOf(node: tss.Node): Span {\n  return {start: node.getStart(), end: node.getEnd()};\n}\n\nfunction spanAt(sourceFile: tss.SourceFile, line: number, column: number): Span|undefined {\n  if (line != null && column != null) {\n    const position = tss.getPositionOfLineAndCharacter(sourceFile, line, column);\n    const findChild = function findChild(node: tss.Node): tss.Node|undefined {\n      if (node.kind > tss.SyntaxKind.LastToken && node.pos <= position && node.end > position) {\n        const betterNode = tss.forEachChild(node, findChild);\n        return betterNode || node;\n      }\n    };\n\n    const node = tss.forEachChild(sourceFile, findChild);\n    if (node) {\n      return {start: node.getStart(), end: node.getEnd()};\n    }\n  }\n}\n\nfunction convertChain(chain: FormattedMessageChain): DiagnosticMessageChain {\n  return {message: chain.message, next: chain.next ? chain.next.map(convertChain) : undefined};\n}\n\nfunction errorToDiagnosticWithChain(error: FormattedError, span: Span): DeclarationError {\n  return {message: error.chain ? convertChain(error.chain) : error.message, span};\n}\n"]} |
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