[6a3a178] | 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 | import { ValueTransformer, visitValue } from '../util';
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| 9 | import { StaticSymbol } from './static_symbol';
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| 10 | import { isGeneratedFile, stripSummaryForJitFileSuffix, stripSummaryForJitNameSuffix, summaryForJitFileName, summaryForJitName } from './util';
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| 11 | const TS = /^(?!.*\.d\.ts$).*\.ts$/;
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| 12 | export class ResolvedStaticSymbol {
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| 13 | constructor(symbol, metadata) {
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| 14 | this.symbol = symbol;
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| 15 | this.metadata = metadata;
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| 16 | }
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| 17 | }
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| 18 | const SUPPORTED_SCHEMA_VERSION = 4;
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| 19 | /**
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| 20 | * This class is responsible for loading metadata per symbol,
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| 21 | * and normalizing references between symbols.
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| 22 | *
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| 23 | * Internally, it only uses symbols without members,
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| 24 | * and deduces the values for symbols with members based
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| 25 | * on these symbols.
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| 26 | */
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| 27 | export class StaticSymbolResolver {
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| 28 | constructor(host, staticSymbolCache, summaryResolver, errorRecorder) {
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| 29 | this.host = host;
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| 30 | this.staticSymbolCache = staticSymbolCache;
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| 31 | this.summaryResolver = summaryResolver;
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| 32 | this.errorRecorder = errorRecorder;
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| 33 | this.metadataCache = new Map();
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| 34 | // Note: this will only contain StaticSymbols without members!
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| 35 | this.resolvedSymbols = new Map();
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| 36 | // Note: this will only contain StaticSymbols without members!
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| 37 | this.importAs = new Map();
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| 38 | this.symbolResourcePaths = new Map();
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| 39 | this.symbolFromFile = new Map();
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| 40 | this.knownFileNameToModuleNames = new Map();
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| 41 | }
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| 42 | resolveSymbol(staticSymbol) {
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| 43 | if (staticSymbol.members.length > 0) {
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| 44 | return this._resolveSymbolMembers(staticSymbol);
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| 45 | }
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| 46 | // Note: always ask for a summary first,
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| 47 | // as we might have read shallow metadata via a .d.ts file
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| 48 | // for the symbol.
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| 49 | const resultFromSummary = this._resolveSymbolFromSummary(staticSymbol);
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| 50 | if (resultFromSummary) {
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| 51 | return resultFromSummary;
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| 52 | }
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| 53 | const resultFromCache = this.resolvedSymbols.get(staticSymbol);
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| 54 | if (resultFromCache) {
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| 55 | return resultFromCache;
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| 56 | }
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| 57 | // Note: Some users use libraries that were not compiled with ngc, i.e. they don't
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| 58 | // have summaries, only .d.ts files. So we always need to check both, the summary
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| 59 | // and metadata.
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| 60 | this._createSymbolsOf(staticSymbol.filePath);
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| 61 | return this.resolvedSymbols.get(staticSymbol);
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| 62 | }
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| 63 | /**
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| 64 | * getImportAs produces a symbol that can be used to import the given symbol.
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| 65 | * The import might be different than the symbol if the symbol is exported from
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| 66 | * a library with a summary; in which case we want to import the symbol from the
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| 67 | * ngfactory re-export instead of directly to avoid introducing a direct dependency
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| 68 | * on an otherwise indirect dependency.
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| 69 | *
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| 70 | * @param staticSymbol the symbol for which to generate a import symbol
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| 71 | */
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| 72 | getImportAs(staticSymbol, useSummaries = true) {
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| 73 | if (staticSymbol.members.length) {
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| 74 | const baseSymbol = this.getStaticSymbol(staticSymbol.filePath, staticSymbol.name);
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| 75 | const baseImportAs = this.getImportAs(baseSymbol, useSummaries);
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| 76 | return baseImportAs ?
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| 77 | this.getStaticSymbol(baseImportAs.filePath, baseImportAs.name, staticSymbol.members) :
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| 78 | null;
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| 79 | }
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| 80 | const summarizedFileName = stripSummaryForJitFileSuffix(staticSymbol.filePath);
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| 81 | if (summarizedFileName !== staticSymbol.filePath) {
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| 82 | const summarizedName = stripSummaryForJitNameSuffix(staticSymbol.name);
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| 83 | const baseSymbol = this.getStaticSymbol(summarizedFileName, summarizedName, staticSymbol.members);
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| 84 | const baseImportAs = this.getImportAs(baseSymbol, useSummaries);
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| 85 | return baseImportAs ? this.getStaticSymbol(summaryForJitFileName(baseImportAs.filePath), summaryForJitName(baseImportAs.name), baseSymbol.members) :
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| 86 | null;
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| 87 | }
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| 88 | let result = (useSummaries && this.summaryResolver.getImportAs(staticSymbol)) || null;
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| 89 | if (!result) {
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| 90 | result = this.importAs.get(staticSymbol);
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| 91 | }
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| 92 | return result;
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| 93 | }
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| 94 | /**
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| 95 | * getResourcePath produces the path to the original location of the symbol and should
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| 96 | * be used to determine the relative location of resource references recorded in
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| 97 | * symbol metadata.
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| 98 | */
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| 99 | getResourcePath(staticSymbol) {
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| 100 | return this.symbolResourcePaths.get(staticSymbol) || staticSymbol.filePath;
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| 101 | }
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| 102 | /**
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| 103 | * getTypeArity returns the number of generic type parameters the given symbol
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| 104 | * has. If the symbol is not a type the result is null.
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| 105 | */
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| 106 | getTypeArity(staticSymbol) {
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| 107 | // If the file is a factory/ngsummary file, don't resolve the symbol as doing so would
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| 108 | // cause the metadata for an factory/ngsummary file to be loaded which doesn't exist.
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| 109 | // All references to generated classes must include the correct arity whenever
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| 110 | // generating code.
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| 111 | if (isGeneratedFile(staticSymbol.filePath)) {
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| 112 | return null;
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| 113 | }
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| 114 | let resolvedSymbol = unwrapResolvedMetadata(this.resolveSymbol(staticSymbol));
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| 115 | while (resolvedSymbol && resolvedSymbol.metadata instanceof StaticSymbol) {
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| 116 | resolvedSymbol = unwrapResolvedMetadata(this.resolveSymbol(resolvedSymbol.metadata));
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| 117 | }
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| 118 | return (resolvedSymbol && resolvedSymbol.metadata && resolvedSymbol.metadata.arity) || null;
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| 119 | }
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| 120 | getKnownModuleName(filePath) {
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| 121 | return this.knownFileNameToModuleNames.get(filePath) || null;
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| 122 | }
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| 123 | recordImportAs(sourceSymbol, targetSymbol) {
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| 124 | sourceSymbol.assertNoMembers();
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| 125 | targetSymbol.assertNoMembers();
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| 126 | this.importAs.set(sourceSymbol, targetSymbol);
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| 127 | }
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| 128 | recordModuleNameForFileName(fileName, moduleName) {
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| 129 | this.knownFileNameToModuleNames.set(fileName, moduleName);
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| 130 | }
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| 131 | /**
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| 132 | * Invalidate all information derived from the given file and return the
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| 133 | * static symbols contained in the file.
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| 134 | *
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| 135 | * @param fileName the file to invalidate
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| 136 | */
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| 137 | invalidateFile(fileName) {
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| 138 | this.metadataCache.delete(fileName);
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| 139 | const symbols = this.symbolFromFile.get(fileName);
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| 140 | if (!symbols) {
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| 141 | return [];
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| 142 | }
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| 143 | this.symbolFromFile.delete(fileName);
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| 144 | for (const symbol of symbols) {
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| 145 | this.resolvedSymbols.delete(symbol);
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| 146 | this.importAs.delete(symbol);
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| 147 | this.symbolResourcePaths.delete(symbol);
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| 148 | }
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| 149 | return symbols;
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| 150 | }
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| 151 | /** @internal */
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| 152 | ignoreErrorsFor(cb) {
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| 153 | const recorder = this.errorRecorder;
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| 154 | this.errorRecorder = () => { };
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| 155 | try {
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| 156 | return cb();
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| 157 | }
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| 158 | finally {
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| 159 | this.errorRecorder = recorder;
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| 160 | }
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| 161 | }
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| 162 | _resolveSymbolMembers(staticSymbol) {
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| 163 | const members = staticSymbol.members;
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| 164 | const baseResolvedSymbol = this.resolveSymbol(this.getStaticSymbol(staticSymbol.filePath, staticSymbol.name));
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| 165 | if (!baseResolvedSymbol) {
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| 166 | return null;
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| 167 | }
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| 168 | let baseMetadata = unwrapResolvedMetadata(baseResolvedSymbol.metadata);
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| 169 | if (baseMetadata instanceof StaticSymbol) {
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| 170 | return new ResolvedStaticSymbol(staticSymbol, this.getStaticSymbol(baseMetadata.filePath, baseMetadata.name, members));
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| 171 | }
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| 172 | else if (baseMetadata && baseMetadata.__symbolic === 'class') {
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| 173 | if (baseMetadata.statics && members.length === 1) {
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| 174 | return new ResolvedStaticSymbol(staticSymbol, baseMetadata.statics[members[0]]);
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| 175 | }
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| 176 | }
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| 177 | else {
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| 178 | let value = baseMetadata;
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| 179 | for (let i = 0; i < members.length && value; i++) {
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| 180 | value = value[members[i]];
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| 181 | }
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| 182 | return new ResolvedStaticSymbol(staticSymbol, value);
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| 183 | }
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| 184 | return null;
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| 185 | }
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| 186 | _resolveSymbolFromSummary(staticSymbol) {
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| 187 | const summary = this.summaryResolver.resolveSummary(staticSymbol);
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| 188 | return summary ? new ResolvedStaticSymbol(staticSymbol, summary.metadata) : null;
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| 189 | }
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| 190 | /**
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| 191 | * getStaticSymbol produces a Type whose metadata is known but whose implementation is not loaded.
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| 192 | * All types passed to the StaticResolver should be pseudo-types returned by this method.
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| 193 | *
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| 194 | * @param declarationFile the absolute path of the file where the symbol is declared
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| 195 | * @param name the name of the type.
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| 196 | * @param members a symbol for a static member of the named type
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| 197 | */
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| 198 | getStaticSymbol(declarationFile, name, members) {
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| 199 | return this.staticSymbolCache.get(declarationFile, name, members);
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| 200 | }
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| 201 | /**
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| 202 | * hasDecorators checks a file's metadata for the presence of decorators without evaluating the
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| 203 | * metadata.
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| 204 | *
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| 205 | * @param filePath the absolute path to examine for decorators.
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| 206 | * @returns true if any class in the file has a decorator.
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| 207 | */
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| 208 | hasDecorators(filePath) {
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| 209 | const metadata = this.getModuleMetadata(filePath);
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| 210 | if (metadata['metadata']) {
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| 211 | return Object.keys(metadata['metadata']).some((metadataKey) => {
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| 212 | const entry = metadata['metadata'][metadataKey];
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| 213 | return entry && entry.__symbolic === 'class' && entry.decorators;
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| 214 | });
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| 215 | }
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| 216 | return false;
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| 217 | }
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| 218 | getSymbolsOf(filePath) {
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| 219 | const summarySymbols = this.summaryResolver.getSymbolsOf(filePath);
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| 220 | if (summarySymbols) {
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| 221 | return summarySymbols;
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| 222 | }
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| 223 | // Note: Some users use libraries that were not compiled with ngc, i.e. they don't
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| 224 | // have summaries, only .d.ts files, but `summaryResolver.isLibraryFile` returns true.
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| 225 | this._createSymbolsOf(filePath);
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| 226 | return this.symbolFromFile.get(filePath) || [];
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| 227 | }
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| 228 | _createSymbolsOf(filePath) {
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| 229 | if (this.symbolFromFile.has(filePath)) {
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| 230 | return;
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| 231 | }
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| 232 | const resolvedSymbols = [];
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| 233 | const metadata = this.getModuleMetadata(filePath);
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| 234 | if (metadata['importAs']) {
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| 235 | // Index bundle indices should use the importAs module name defined
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| 236 | // in the bundle.
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| 237 | this.knownFileNameToModuleNames.set(filePath, metadata['importAs']);
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| 238 | }
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| 239 | // handle the symbols in one of the re-export location
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| 240 | if (metadata['exports']) {
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| 241 | for (const moduleExport of metadata['exports']) {
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| 242 | // handle the symbols in the list of explicitly re-exported symbols.
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| 243 | if (moduleExport.export) {
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| 244 | moduleExport.export.forEach((exportSymbol) => {
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| 245 | let symbolName;
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| 246 | if (typeof exportSymbol === 'string') {
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| 247 | symbolName = exportSymbol;
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| 248 | }
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| 249 | else {
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| 250 | symbolName = exportSymbol.as;
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| 251 | }
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| 252 | symbolName = unescapeIdentifier(symbolName);
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| 253 | let symName = symbolName;
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| 254 | if (typeof exportSymbol !== 'string') {
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| 255 | symName = unescapeIdentifier(exportSymbol.name);
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| 256 | }
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| 257 | const resolvedModule = this.resolveModule(moduleExport.from, filePath);
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| 258 | if (resolvedModule) {
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| 259 | const targetSymbol = this.getStaticSymbol(resolvedModule, symName);
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| 260 | const sourceSymbol = this.getStaticSymbol(filePath, symbolName);
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| 261 | resolvedSymbols.push(this.createExport(sourceSymbol, targetSymbol));
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| 262 | }
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| 263 | });
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| 264 | }
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| 265 | else {
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| 266 | // Handle the symbols loaded by 'export *' directives.
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| 267 | const resolvedModule = this.resolveModule(moduleExport.from, filePath);
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| 268 | if (resolvedModule && resolvedModule !== filePath) {
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| 269 | const nestedExports = this.getSymbolsOf(resolvedModule);
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| 270 | nestedExports.forEach((targetSymbol) => {
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| 271 | const sourceSymbol = this.getStaticSymbol(filePath, targetSymbol.name);
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| 272 | resolvedSymbols.push(this.createExport(sourceSymbol, targetSymbol));
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| 273 | });
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| 274 | }
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| 275 | }
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| 276 | }
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| 277 | }
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| 278 | // handle the actual metadata. Has to be after the exports
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| 279 | // as there might be collisions in the names, and we want the symbols
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| 280 | // of the current module to win ofter reexports.
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| 281 | if (metadata['metadata']) {
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| 282 | // handle direct declarations of the symbol
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| 283 | const topLevelSymbolNames = new Set(Object.keys(metadata['metadata']).map(unescapeIdentifier));
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| 284 | const origins = metadata['origins'] || {};
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| 285 | Object.keys(metadata['metadata']).forEach((metadataKey) => {
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| 286 | const symbolMeta = metadata['metadata'][metadataKey];
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| 287 | const name = unescapeIdentifier(metadataKey);
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| 288 | const symbol = this.getStaticSymbol(filePath, name);
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| 289 | const origin = origins.hasOwnProperty(metadataKey) && origins[metadataKey];
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| 290 | if (origin) {
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| 291 | // If the symbol is from a bundled index, use the declaration location of the
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| 292 | // symbol so relative references (such as './my.html') will be calculated
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| 293 | // correctly.
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| 294 | const originFilePath = this.resolveModule(origin, filePath);
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| 295 | if (!originFilePath) {
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| 296 | this.reportError(new Error(`Couldn't resolve original symbol for ${origin} from ${this.host.getOutputName(filePath)}`));
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| 297 | }
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| 298 | else {
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| 299 | this.symbolResourcePaths.set(symbol, originFilePath);
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| 300 | }
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| 301 | }
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| 302 | resolvedSymbols.push(this.createResolvedSymbol(symbol, filePath, topLevelSymbolNames, symbolMeta));
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| 303 | });
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| 304 | }
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| 305 | const uniqueSymbols = new Set();
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| 306 | for (const resolvedSymbol of resolvedSymbols) {
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| 307 | this.resolvedSymbols.set(resolvedSymbol.symbol, resolvedSymbol);
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| 308 | uniqueSymbols.add(resolvedSymbol.symbol);
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| 309 | }
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| 310 | this.symbolFromFile.set(filePath, Array.from(uniqueSymbols));
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| 311 | }
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| 312 | createResolvedSymbol(sourceSymbol, topLevelPath, topLevelSymbolNames, metadata) {
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| 313 | // For classes that don't have Angular summaries / metadata,
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| 314 | // we only keep their arity, but nothing else
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| 315 | // (e.g. their constructor parameters).
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| 316 | // We do this to prevent introducing deep imports
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| 317 | // as we didn't generate .ngfactory.ts files with proper reexports.
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| 318 | const isTsFile = TS.test(sourceSymbol.filePath);
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| 319 | if (this.summaryResolver.isLibraryFile(sourceSymbol.filePath) && !isTsFile && metadata &&
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| 320 | metadata['__symbolic'] === 'class') {
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| 321 | const transformedMeta = { __symbolic: 'class', arity: metadata.arity };
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| 322 | return new ResolvedStaticSymbol(sourceSymbol, transformedMeta);
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| 323 | }
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| 324 | let _originalFileMemo;
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| 325 | const getOriginalName = () => {
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| 326 | if (!_originalFileMemo) {
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| 327 | // Guess what the original file name is from the reference. If it has a `.d.ts` extension
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| 328 | // replace it with `.ts`. If it already has `.ts` just leave it in place. If it doesn't have
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| 329 | // .ts or .d.ts, append `.ts'. Also, if it is in `node_modules`, trim the `node_module`
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| 330 | // location as it is not important to finding the file.
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| 331 | _originalFileMemo =
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| 332 | this.host.getOutputName(topLevelPath.replace(/((\.ts)|(\.d\.ts)|)$/, '.ts')
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| 333 | .replace(/^.*node_modules[/\\]/, ''));
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| 334 | }
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| 335 | return _originalFileMemo;
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| 336 | };
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| 337 | const self = this;
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| 338 | class ReferenceTransformer extends ValueTransformer {
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| 339 | visitStringMap(map, functionParams) {
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| 340 | const symbolic = map['__symbolic'];
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| 341 | if (symbolic === 'function') {
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| 342 | const oldLen = functionParams.length;
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| 343 | functionParams.push(...(map['parameters'] || []));
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| 344 | const result = super.visitStringMap(map, functionParams);
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| 345 | functionParams.length = oldLen;
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| 346 | return result;
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| 347 | }
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| 348 | else if (symbolic === 'reference') {
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| 349 | const module = map['module'];
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| 350 | const name = map['name'] ? unescapeIdentifier(map['name']) : map['name'];
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| 351 | if (!name) {
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| 352 | return null;
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| 353 | }
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| 354 | let filePath;
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| 355 | if (module) {
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| 356 | filePath = self.resolveModule(module, sourceSymbol.filePath);
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| 357 | if (!filePath) {
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| 358 | return {
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| 359 | __symbolic: 'error',
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| 360 | message: `Could not resolve ${module} relative to ${self.host.getMetadataFor(sourceSymbol.filePath)}.`,
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| 361 | line: map['line'],
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| 362 | character: map['character'],
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| 363 | fileName: getOriginalName()
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| 364 | };
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| 365 | }
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| 366 | return {
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| 367 | __symbolic: 'resolved',
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| 368 | symbol: self.getStaticSymbol(filePath, name),
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| 369 | line: map['line'],
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| 370 | character: map['character'],
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| 371 | fileName: getOriginalName()
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| 372 | };
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| 373 | }
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| 374 | else if (functionParams.indexOf(name) >= 0) {
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| 375 | // reference to a function parameter
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| 376 | return { __symbolic: 'reference', name: name };
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| 377 | }
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| 378 | else {
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| 379 | if (topLevelSymbolNames.has(name)) {
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| 380 | return self.getStaticSymbol(topLevelPath, name);
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| 381 | }
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| 382 | // ambient value
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| 383 | null;
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| 384 | }
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| 385 | }
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| 386 | else if (symbolic === 'error') {
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| 387 | return Object.assign(Object.assign({}, map), { fileName: getOriginalName() });
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| 388 | }
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| 389 | else {
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| 390 | return super.visitStringMap(map, functionParams);
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| 391 | }
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| 392 | }
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| 393 | }
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| 394 | const transformedMeta = visitValue(metadata, new ReferenceTransformer(), []);
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| 395 | let unwrappedTransformedMeta = unwrapResolvedMetadata(transformedMeta);
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| 396 | if (unwrappedTransformedMeta instanceof StaticSymbol) {
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| 397 | return this.createExport(sourceSymbol, unwrappedTransformedMeta);
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| 398 | }
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| 399 | return new ResolvedStaticSymbol(sourceSymbol, transformedMeta);
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| 400 | }
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| 401 | createExport(sourceSymbol, targetSymbol) {
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| 402 | sourceSymbol.assertNoMembers();
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| 403 | targetSymbol.assertNoMembers();
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| 404 | if (this.summaryResolver.isLibraryFile(sourceSymbol.filePath) &&
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| 405 | this.summaryResolver.isLibraryFile(targetSymbol.filePath)) {
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| 406 | // This case is for an ng library importing symbols from a plain ts library
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| 407 | // transitively.
|
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| 408 | // Note: We rely on the fact that we discover symbols in the direction
|
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| 409 | // from source files to library files
|
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| 410 | this.importAs.set(targetSymbol, this.getImportAs(sourceSymbol) || sourceSymbol);
|
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| 411 | }
|
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| 412 | return new ResolvedStaticSymbol(sourceSymbol, targetSymbol);
|
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| 413 | }
|
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| 414 | reportError(error, context, path) {
|
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| 415 | if (this.errorRecorder) {
|
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| 416 | this.errorRecorder(error, (context && context.filePath) || path);
|
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| 417 | }
|
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| 418 | else {
|
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| 419 | throw error;
|
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| 420 | }
|
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| 421 | }
|
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| 422 | /**
|
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| 423 | * @param module an absolute path to a module file.
|
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| 424 | */
|
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| 425 | getModuleMetadata(module) {
|
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| 426 | let moduleMetadata = this.metadataCache.get(module);
|
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| 427 | if (!moduleMetadata) {
|
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| 428 | const moduleMetadatas = this.host.getMetadataFor(module);
|
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| 429 | if (moduleMetadatas) {
|
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| 430 | let maxVersion = -1;
|
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| 431 | moduleMetadatas.forEach((md) => {
|
---|
| 432 | if (md && md['version'] > maxVersion) {
|
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| 433 | maxVersion = md['version'];
|
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| 434 | moduleMetadata = md;
|
---|
| 435 | }
|
---|
| 436 | });
|
---|
| 437 | }
|
---|
| 438 | if (!moduleMetadata) {
|
---|
| 439 | moduleMetadata =
|
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| 440 | { __symbolic: 'module', version: SUPPORTED_SCHEMA_VERSION, module: module, metadata: {} };
|
---|
| 441 | }
|
---|
| 442 | if (moduleMetadata['version'] != SUPPORTED_SCHEMA_VERSION) {
|
---|
| 443 | const errorMessage = moduleMetadata['version'] == 2 ?
|
---|
| 444 | `Unsupported metadata version ${moduleMetadata['version']} for module ${module}. This module should be compiled with a newer version of ngc` :
|
---|
| 445 | `Metadata version mismatch for module ${this.host.getOutputName(module)}, found version ${moduleMetadata['version']}, expected ${SUPPORTED_SCHEMA_VERSION}`;
|
---|
| 446 | this.reportError(new Error(errorMessage));
|
---|
| 447 | }
|
---|
| 448 | this.metadataCache.set(module, moduleMetadata);
|
---|
| 449 | }
|
---|
| 450 | return moduleMetadata;
|
---|
| 451 | }
|
---|
| 452 | getSymbolByModule(module, symbolName, containingFile) {
|
---|
| 453 | const filePath = this.resolveModule(module, containingFile);
|
---|
| 454 | if (!filePath) {
|
---|
| 455 | this.reportError(new Error(`Could not resolve module ${module}${containingFile ? ' relative to ' + this.host.getOutputName(containingFile) : ''}`));
|
---|
| 456 | return this.getStaticSymbol(`ERROR:${module}`, symbolName);
|
---|
| 457 | }
|
---|
| 458 | return this.getStaticSymbol(filePath, symbolName);
|
---|
| 459 | }
|
---|
| 460 | resolveModule(module, containingFile) {
|
---|
| 461 | try {
|
---|
| 462 | return this.host.moduleNameToFileName(module, containingFile);
|
---|
| 463 | }
|
---|
| 464 | catch (e) {
|
---|
| 465 | console.error(`Could not resolve module '${module}' relative to file ${containingFile}`);
|
---|
| 466 | this.reportError(e, undefined, containingFile);
|
---|
| 467 | }
|
---|
| 468 | return null;
|
---|
| 469 | }
|
---|
| 470 | }
|
---|
| 471 | // Remove extra underscore from escaped identifier.
|
---|
| 472 | // See https://github.com/Microsoft/TypeScript/blob/master/src/compiler/utilities.ts
|
---|
| 473 | export function unescapeIdentifier(identifier) {
|
---|
| 474 | return identifier.startsWith('___') ? identifier.substr(1) : identifier;
|
---|
| 475 | }
|
---|
| 476 | export function unwrapResolvedMetadata(metadata) {
|
---|
| 477 | if (metadata && metadata.__symbolic === 'resolved') {
|
---|
| 478 | return metadata.symbol;
|
---|
| 479 | }
|
---|
| 480 | return metadata;
|
---|
| 481 | }
|
---|
| 482 | //# 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"/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {SummaryResolver} from '../summary_resolver';\nimport {ValueTransformer, visitValue} from '../util';\n\nimport {StaticSymbol, StaticSymbolCache} from './static_symbol';\nimport {isGeneratedFile, stripSummaryForJitFileSuffix, stripSummaryForJitNameSuffix, summaryForJitFileName, summaryForJitName} from './util';\n\nconst TS = /^(?!.*\\.d\\.ts$).*\\.ts$/;\n\nexport class ResolvedStaticSymbol {\n  constructor(public symbol: StaticSymbol, public metadata: any) {}\n}\n\n/**\n * The host of the SymbolResolverHost disconnects the implementation from TypeScript / other\n * language\n * services and from underlying file systems.\n */\nexport interface StaticSymbolResolverHost {\n  /**\n   * Return a ModuleMetadata for the given module.\n   * Angular CLI will produce this metadata for a module whenever a .d.ts files is\n   * produced and the module has exported variables or classes with decorators. Module metadata can\n   * also be produced directly from TypeScript sources by using MetadataCollector in tools/metadata.\n   *\n   * @param modulePath is a string identifier for a module as an absolute path.\n   * @returns the metadata for the given module.\n   */\n  getMetadataFor(modulePath: string): {[key: string]: any}[]|undefined;\n\n  /**\n   * Converts a module name that is used in an `import` to a file path.\n   * I.e.\n   * `path/to/containingFile.ts` containing `import {...} from 'module-name'`.\n   */\n  moduleNameToFileName(moduleName: string, containingFile?: string): string|null;\n\n  /**\n   * Get a file suitable for display to the user that should be relative to the project directory\n   * or the current directory.\n   */\n  getOutputName(filePath: string): string;\n}\n\nconst SUPPORTED_SCHEMA_VERSION = 4;\n\n/**\n * This class is responsible for loading metadata per symbol,\n * and normalizing references between symbols.\n *\n * Internally, it only uses symbols without members,\n * and deduces the values for symbols with members based\n * on these symbols.\n */\nexport class StaticSymbolResolver {\n  private metadataCache = new Map<string, {[key: string]: any}>();\n  // Note: this will only contain StaticSymbols without members!\n  private resolvedSymbols = new Map<StaticSymbol, ResolvedStaticSymbol>();\n  // Note: this will only contain StaticSymbols without members!\n  private importAs = new Map<StaticSymbol, StaticSymbol>();\n  private symbolResourcePaths = new Map<StaticSymbol, string>();\n  private symbolFromFile = new Map<string, StaticSymbol[]>();\n  private knownFileNameToModuleNames = new Map<string, string>();\n\n  constructor(\n      private host: StaticSymbolResolverHost, private staticSymbolCache: StaticSymbolCache,\n      private summaryResolver: SummaryResolver<StaticSymbol>,\n      private errorRecorder?: (error: any, fileName?: string) => void) {}\n\n  resolveSymbol(staticSymbol: StaticSymbol): ResolvedStaticSymbol {\n    if (staticSymbol.members.length > 0) {\n      return this._resolveSymbolMembers(staticSymbol)!;\n    }\n    // Note: always ask for a summary first,\n    // as we might have read shallow metadata via a .d.ts file\n    // for the symbol.\n    const resultFromSummary = this._resolveSymbolFromSummary(staticSymbol)!;\n    if (resultFromSummary) {\n      return resultFromSummary;\n    }\n    const resultFromCache = this.resolvedSymbols.get(staticSymbol);\n    if (resultFromCache) {\n      return resultFromCache;\n    }\n    // Note: Some users use libraries that were not compiled with ngc, i.e. they don't\n    // have summaries, only .d.ts files. So we always need to check both, the summary\n    // and metadata.\n    this._createSymbolsOf(staticSymbol.filePath);\n    return this.resolvedSymbols.get(staticSymbol)!;\n  }\n\n  /**\n   * getImportAs produces a symbol that can be used to import the given symbol.\n   * The import might be different than the symbol if the symbol is exported from\n   * a library with a summary; in which case we want to import the symbol from the\n   * ngfactory re-export instead of directly to avoid introducing a direct dependency\n   * on an otherwise indirect dependency.\n   *\n   * @param staticSymbol the symbol for which to generate a import symbol\n   */\n  getImportAs(staticSymbol: StaticSymbol, useSummaries: boolean = true): StaticSymbol|null {\n    if (staticSymbol.members.length) {\n      const baseSymbol = this.getStaticSymbol(staticSymbol.filePath, staticSymbol.name);\n      const baseImportAs = this.getImportAs(baseSymbol, useSummaries);\n      return baseImportAs ?\n          this.getStaticSymbol(baseImportAs.filePath, baseImportAs.name, staticSymbol.members) :\n          null;\n    }\n    const summarizedFileName = stripSummaryForJitFileSuffix(staticSymbol.filePath);\n    if (summarizedFileName !== staticSymbol.filePath) {\n      const summarizedName = stripSummaryForJitNameSuffix(staticSymbol.name);\n      const baseSymbol =\n          this.getStaticSymbol(summarizedFileName, summarizedName, staticSymbol.members);\n      const baseImportAs = this.getImportAs(baseSymbol, useSummaries);\n      return baseImportAs ? this.getStaticSymbol(\n                                summaryForJitFileName(baseImportAs.filePath),\n                                summaryForJitName(baseImportAs.name), baseSymbol.members) :\n                            null;\n    }\n    let result = (useSummaries && this.summaryResolver.getImportAs(staticSymbol)) || null;\n    if (!result) {\n      result = this.importAs.get(staticSymbol)!;\n    }\n    return result;\n  }\n\n  /**\n   * getResourcePath produces the path to the original location of the symbol and should\n   * be used to determine the relative location of resource references recorded in\n   * symbol metadata.\n   */\n  getResourcePath(staticSymbol: StaticSymbol): string {\n    return this.symbolResourcePaths.get(staticSymbol) || staticSymbol.filePath;\n  }\n\n  /**\n   * getTypeArity returns the number of generic type parameters the given symbol\n   * has. If the symbol is not a type the result is null.\n   */\n  getTypeArity(staticSymbol: StaticSymbol): number|null {\n    // If the file is a factory/ngsummary file, don't resolve the symbol as doing so would\n    // cause the metadata for an factory/ngsummary file to be loaded which doesn't exist.\n    // All references to generated classes must include the correct arity whenever\n    // generating code.\n    if (isGeneratedFile(staticSymbol.filePath)) {\n      return null;\n    }\n    let resolvedSymbol = unwrapResolvedMetadata(this.resolveSymbol(staticSymbol));\n    while (resolvedSymbol && resolvedSymbol.metadata instanceof StaticSymbol) {\n      resolvedSymbol = unwrapResolvedMetadata(this.resolveSymbol(resolvedSymbol.metadata));\n    }\n    return (resolvedSymbol && resolvedSymbol.metadata && resolvedSymbol.metadata.arity) || null;\n  }\n\n  getKnownModuleName(filePath: string): string|null {\n    return this.knownFileNameToModuleNames.get(filePath) || null;\n  }\n\n  recordImportAs(sourceSymbol: StaticSymbol, targetSymbol: StaticSymbol) {\n    sourceSymbol.assertNoMembers();\n    targetSymbol.assertNoMembers();\n    this.importAs.set(sourceSymbol, targetSymbol);\n  }\n\n  recordModuleNameForFileName(fileName: string, moduleName: string) {\n    this.knownFileNameToModuleNames.set(fileName, moduleName);\n  }\n\n  /**\n   * Invalidate all information derived from the given file and return the\n   * static symbols contained in the file.\n   *\n   * @param fileName the file to invalidate\n   */\n  invalidateFile(fileName: string): StaticSymbol[] {\n    this.metadataCache.delete(fileName);\n    const symbols = this.symbolFromFile.get(fileName);\n    if (!symbols) {\n      return [];\n    }\n    this.symbolFromFile.delete(fileName);\n    for (const symbol of symbols) {\n      this.resolvedSymbols.delete(symbol);\n      this.importAs.delete(symbol);\n      this.symbolResourcePaths.delete(symbol);\n    }\n    return symbols;\n  }\n\n  /** @internal */\n  ignoreErrorsFor<T>(cb: () => T) {\n    const recorder = this.errorRecorder;\n    this.errorRecorder = () => {};\n    try {\n      return cb();\n    } finally {\n      this.errorRecorder = recorder;\n    }\n  }\n\n  private _resolveSymbolMembers(staticSymbol: StaticSymbol): ResolvedStaticSymbol|null {\n    const members = staticSymbol.members;\n    const baseResolvedSymbol =\n        this.resolveSymbol(this.getStaticSymbol(staticSymbol.filePath, staticSymbol.name));\n    if (!baseResolvedSymbol) {\n      return null;\n    }\n    let baseMetadata = unwrapResolvedMetadata(baseResolvedSymbol.metadata);\n    if (baseMetadata instanceof StaticSymbol) {\n      return new ResolvedStaticSymbol(\n          staticSymbol, this.getStaticSymbol(baseMetadata.filePath, baseMetadata.name, members));\n    } else if (baseMetadata && baseMetadata.__symbolic === 'class') {\n      if (baseMetadata.statics && members.length === 1) {\n        return new ResolvedStaticSymbol(staticSymbol, baseMetadata.statics[members[0]]);\n      }\n    } else {\n      let value = baseMetadata;\n      for (let i = 0; i < members.length && value; i++) {\n        value = value[members[i]];\n      }\n      return new ResolvedStaticSymbol(staticSymbol, value);\n    }\n    return null;\n  }\n\n  private _resolveSymbolFromSummary(staticSymbol: StaticSymbol): ResolvedStaticSymbol|null {\n    const summary = this.summaryResolver.resolveSummary(staticSymbol);\n    return summary ? new ResolvedStaticSymbol(staticSymbol, summary.metadata) : null;\n  }\n\n  /**\n   * getStaticSymbol produces a Type whose metadata is known but whose implementation is not loaded.\n   * All types passed to the StaticResolver should be pseudo-types returned by this method.\n   *\n   * @param declarationFile the absolute path of the file where the symbol is declared\n   * @param name the name of the type.\n   * @param members a symbol for a static member of the named type\n   */\n  getStaticSymbol(declarationFile: string, name: string, members?: string[]): StaticSymbol {\n    return this.staticSymbolCache.get(declarationFile, name, members);\n  }\n\n  /**\n   * hasDecorators checks a file's metadata for the presence of decorators without evaluating the\n   * metadata.\n   *\n   * @param filePath the absolute path to examine for decorators.\n   * @returns true if any class in the file has a decorator.\n   */\n  hasDecorators(filePath: string): boolean {\n    const metadata = this.getModuleMetadata(filePath);\n    if (metadata['metadata']) {\n      return Object.keys(metadata['metadata']).some((metadataKey) => {\n        const entry = metadata['metadata'][metadataKey];\n        return entry && entry.__symbolic === 'class' && entry.decorators;\n      });\n    }\n    return false;\n  }\n\n  getSymbolsOf(filePath: string): StaticSymbol[] {\n    const summarySymbols = this.summaryResolver.getSymbolsOf(filePath);\n    if (summarySymbols) {\n      return summarySymbols;\n    }\n    // Note: Some users use libraries that were not compiled with ngc, i.e. they don't\n    // have summaries, only .d.ts files, but `summaryResolver.isLibraryFile` returns true.\n    this._createSymbolsOf(filePath);\n    return this.symbolFromFile.get(filePath) || [];\n  }\n\n  private _createSymbolsOf(filePath: string) {\n    if (this.symbolFromFile.has(filePath)) {\n      return;\n    }\n    const resolvedSymbols: ResolvedStaticSymbol[] = [];\n    const metadata = this.getModuleMetadata(filePath);\n    if (metadata['importAs']) {\n      // Index bundle indices should use the importAs module name defined\n      // in the bundle.\n      this.knownFileNameToModuleNames.set(filePath, metadata['importAs']);\n    }\n    // handle the symbols in one of the re-export location\n    if (metadata['exports']) {\n      for (const moduleExport of metadata['exports']) {\n        // handle the symbols in the list of explicitly re-exported symbols.\n        if (moduleExport.export) {\n          moduleExport.export.forEach((exportSymbol: any) => {\n            let symbolName: string;\n            if (typeof exportSymbol === 'string') {\n              symbolName = exportSymbol;\n            } else {\n              symbolName = exportSymbol.as;\n            }\n            symbolName = unescapeIdentifier(symbolName);\n            let symName = symbolName;\n            if (typeof exportSymbol !== 'string') {\n              symName = unescapeIdentifier(exportSymbol.name);\n            }\n            const resolvedModule = this.resolveModule(moduleExport.from, filePath);\n            if (resolvedModule) {\n              const targetSymbol = this.getStaticSymbol(resolvedModule, symName);\n              const sourceSymbol = this.getStaticSymbol(filePath, symbolName);\n              resolvedSymbols.push(this.createExport(sourceSymbol, targetSymbol));\n            }\n          });\n        } else {\n          // Handle the symbols loaded by 'export *' directives.\n          const resolvedModule = this.resolveModule(moduleExport.from, filePath);\n          if (resolvedModule && resolvedModule !== filePath) {\n            const nestedExports = this.getSymbolsOf(resolvedModule);\n            nestedExports.forEach((targetSymbol) => {\n              const sourceSymbol = this.getStaticSymbol(filePath, targetSymbol.name);\n              resolvedSymbols.push(this.createExport(sourceSymbol, targetSymbol));\n            });\n          }\n        }\n      }\n    }\n\n    // handle the actual metadata. Has to be after the exports\n    // as there might be collisions in the names, and we want the symbols\n    // of the current module to win ofter reexports.\n    if (metadata['metadata']) {\n      // handle direct declarations of the symbol\n      const topLevelSymbolNames =\n          new Set<string>(Object.keys(metadata['metadata']).map(unescapeIdentifier));\n      const origins: {[index: string]: string} = metadata['origins'] || {};\n      Object.keys(metadata['metadata']).forEach((metadataKey) => {\n        const symbolMeta = metadata['metadata'][metadataKey];\n        const name = unescapeIdentifier(metadataKey);\n\n        const symbol = this.getStaticSymbol(filePath, name);\n\n        const origin = origins.hasOwnProperty(metadataKey) && origins[metadataKey];\n        if (origin) {\n          // If the symbol is from a bundled index, use the declaration location of the\n          // symbol so relative references (such as './my.html') will be calculated\n          // correctly.\n          const originFilePath = this.resolveModule(origin, filePath);\n          if (!originFilePath) {\n            this.reportError(new Error(`Couldn't resolve original symbol for ${origin} from ${\n                this.host.getOutputName(filePath)}`));\n          } else {\n            this.symbolResourcePaths.set(symbol, originFilePath);\n          }\n        }\n        resolvedSymbols.push(\n            this.createResolvedSymbol(symbol, filePath, topLevelSymbolNames, symbolMeta));\n      });\n    }\n    const uniqueSymbols = new Set<StaticSymbol>();\n    for (const resolvedSymbol of resolvedSymbols) {\n      this.resolvedSymbols.set(resolvedSymbol.symbol, resolvedSymbol);\n      uniqueSymbols.add(resolvedSymbol.symbol);\n    }\n    this.symbolFromFile.set(filePath, Array.from(uniqueSymbols));\n  }\n\n  private createResolvedSymbol(\n      sourceSymbol: StaticSymbol, topLevelPath: string, topLevelSymbolNames: Set<string>,\n      metadata: any): ResolvedStaticSymbol {\n    // For classes that don't have Angular summaries / metadata,\n    // we only keep their arity, but nothing else\n    // (e.g. their constructor parameters).\n    // We do this to prevent introducing deep imports\n    // as we didn't generate .ngfactory.ts files with proper reexports.\n    const isTsFile = TS.test(sourceSymbol.filePath);\n    if (this.summaryResolver.isLibraryFile(sourceSymbol.filePath) && !isTsFile && metadata &&\n        metadata['__symbolic'] === 'class') {\n      const transformedMeta = {__symbolic: 'class', arity: metadata.arity};\n      return new ResolvedStaticSymbol(sourceSymbol, transformedMeta);\n    }\n\n    let _originalFileMemo: string|undefined;\n    const getOriginalName: () => string = () => {\n      if (!_originalFileMemo) {\n        // Guess what the original file name is from the reference. If it has a `.d.ts` extension\n        // replace it with `.ts`. If it already has `.ts` just leave it in place. If it doesn't have\n        // .ts or .d.ts, append `.ts'. Also, if it is in `node_modules`, trim the `node_module`\n        // location as it is not important to finding the file.\n        _originalFileMemo =\n            this.host.getOutputName(topLevelPath.replace(/((\\.ts)|(\\.d\\.ts)|)$/, '.ts')\n                                        .replace(/^.*node_modules[/\\\\]/, ''));\n      }\n      return _originalFileMemo;\n    };\n\n    const self = this;\n\n    class ReferenceTransformer extends ValueTransformer {\n      override visitStringMap(map: {[key: string]: any}, functionParams: string[]): any {\n        const symbolic = map['__symbolic'];\n        if (symbolic === 'function') {\n          const oldLen = functionParams.length;\n          functionParams.push(...(map['parameters'] || []));\n          const result = super.visitStringMap(map, functionParams);\n          functionParams.length = oldLen;\n          return result;\n        } else if (symbolic === 'reference') {\n          const module = map['module'];\n          const name = map['name'] ? unescapeIdentifier(map['name']) : map['name'];\n          if (!name) {\n            return null;\n          }\n          let filePath: string;\n          if (module) {\n            filePath = self.resolveModule(module, sourceSymbol.filePath)!;\n            if (!filePath) {\n              return {\n                __symbolic: 'error',\n                message: `Could not resolve ${module} relative to ${\n                    self.host.getMetadataFor(sourceSymbol.filePath)}.`,\n                line: map['line'],\n                character: map['character'],\n                fileName: getOriginalName()\n              };\n            }\n            return {\n              __symbolic: 'resolved',\n              symbol: self.getStaticSymbol(filePath, name),\n              line: map['line'],\n              character: map['character'],\n              fileName: getOriginalName()\n            };\n          } else if (functionParams.indexOf(name) >= 0) {\n            // reference to a function parameter\n            return {__symbolic: 'reference', name: name};\n          } else {\n            if (topLevelSymbolNames.has(name)) {\n              return self.getStaticSymbol(topLevelPath, name);\n            }\n            // ambient value\n            null;\n          }\n        } else if (symbolic === 'error') {\n          return {...map, fileName: getOriginalName()};\n        } else {\n          return super.visitStringMap(map, functionParams);\n        }\n      }\n    }\n    const transformedMeta = visitValue(metadata, new ReferenceTransformer(), []);\n    let unwrappedTransformedMeta = unwrapResolvedMetadata(transformedMeta);\n    if (unwrappedTransformedMeta instanceof StaticSymbol) {\n      return this.createExport(sourceSymbol, unwrappedTransformedMeta);\n    }\n    return new ResolvedStaticSymbol(sourceSymbol, transformedMeta);\n  }\n\n  private createExport(sourceSymbol: StaticSymbol, targetSymbol: StaticSymbol):\n      ResolvedStaticSymbol {\n    sourceSymbol.assertNoMembers();\n    targetSymbol.assertNoMembers();\n    if (this.summaryResolver.isLibraryFile(sourceSymbol.filePath) &&\n        this.summaryResolver.isLibraryFile(targetSymbol.filePath)) {\n      // This case is for an ng library importing symbols from a plain ts library\n      // transitively.\n      // Note: We rely on the fact that we discover symbols in the direction\n      // from source files to library files\n      this.importAs.set(targetSymbol, this.getImportAs(sourceSymbol) || sourceSymbol);\n    }\n    return new ResolvedStaticSymbol(sourceSymbol, targetSymbol);\n  }\n\n  private reportError(error: Error, context?: StaticSymbol, path?: string) {\n    if (this.errorRecorder) {\n      this.errorRecorder(error, (context && context.filePath) || path);\n    } else {\n      throw error;\n    }\n  }\n\n  /**\n   * @param module an absolute path to a module file.\n   */\n  private getModuleMetadata(module: string): {[key: string]: any} {\n    let moduleMetadata = this.metadataCache.get(module);\n    if (!moduleMetadata) {\n      const moduleMetadatas = this.host.getMetadataFor(module);\n      if (moduleMetadatas) {\n        let maxVersion = -1;\n        moduleMetadatas.forEach((md) => {\n          if (md && md['version'] > maxVersion) {\n            maxVersion = md['version'];\n            moduleMetadata = md;\n          }\n        });\n      }\n      if (!moduleMetadata) {\n        moduleMetadata =\n            {__symbolic: 'module', version: SUPPORTED_SCHEMA_VERSION, module: module, metadata: {}};\n      }\n      if (moduleMetadata['version'] != SUPPORTED_SCHEMA_VERSION) {\n        const errorMessage = moduleMetadata['version'] == 2 ?\n            `Unsupported metadata version ${moduleMetadata['version']} for module ${\n                module}. This module should be compiled with a newer version of ngc` :\n            `Metadata version mismatch for module ${\n                this.host.getOutputName(module)}, found version ${\n                moduleMetadata['version']}, expected ${SUPPORTED_SCHEMA_VERSION}`;\n        this.reportError(new Error(errorMessage));\n      }\n      this.metadataCache.set(module, moduleMetadata);\n    }\n    return moduleMetadata;\n  }\n\n\n  getSymbolByModule(module: string, symbolName: string, containingFile?: string): StaticSymbol {\n    const filePath = this.resolveModule(module, containingFile);\n    if (!filePath) {\n      this.reportError(new Error(`Could not resolve module ${module}${\n          containingFile ? ' relative to ' + this.host.getOutputName(containingFile) : ''}`));\n      return this.getStaticSymbol(`ERROR:${module}`, symbolName);\n    }\n    return this.getStaticSymbol(filePath, symbolName);\n  }\n\n  private resolveModule(module: string, containingFile?: string): string|null {\n    try {\n      return this.host.moduleNameToFileName(module, containingFile);\n    } catch (e) {\n      console.error(`Could not resolve module '${module}' relative to file ${containingFile}`);\n      this.reportError(e, undefined, containingFile);\n    }\n    return null;\n  }\n}\n\n// Remove extra underscore from escaped identifier.\n// See https://github.com/Microsoft/TypeScript/blob/master/src/compiler/utilities.ts\nexport function unescapeIdentifier(identifier: string): string {\n  return identifier.startsWith('___') ? identifier.substr(1) : identifier;\n}\n\nexport function unwrapResolvedMetadata(metadata: any): any {\n  if (metadata && metadata.__symbolic === 'resolved') {\n    return metadata.symbol;\n  }\n  return metadata;\n}\n"]} |
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