TypeScript FileCache.updateCache方法代碼示例

function runOneBuild(args: string[], inputs?: {[path: string]: string}): boolean {
  if (args[0] === '-p') args.shift();
  // Strip leading at-signs, used to indicate a params file
  const project = args[0].replace(/^@+/, '');
  let fileLoader: FileLoader;
  if (inputs) {
    fileLoader = new CachedFileLoader(fileCache, ALLOW_NON_HERMETIC_READS);
    // Resolve the inputs to absolute paths to match TypeScript internals
    const resolvedInputs: {[path: string]: string} = {};
    for (const key of Object.keys(inputs)) {
      resolvedInputs[path.resolve(key)] = inputs[key];
    }
    fileCache.updateCache(resolvedInputs);
  } else {
    fileLoader = new UncachedFileLoader();
  }
  const [{options: tsOptions, bazelOpts, files, config}] = parseTsconfig(project);
  const expectedOuts = config['angularCompilerOptions']['expectedOut'];

  const {basePath} = ng.calcProjectFileAndBasePath(project);
  const compilerOpts = ng.createNgCompilerOptions(basePath, config, tsOptions);
  const {diagnostics} = compile({fileLoader, compilerOpts, bazelOpts, files, expectedOuts});
  return diagnostics.every(d => d.category !== ts.DiagnosticCategory.Error);
}

export function compile({allowNonHermeticReads, allDepsCompiledWithBazel = true, compilerOpts,
                         tsHost, bazelOpts, files, inputs, expectedOuts, gatherDiagnostics}: {
  allowNonHermeticReads: boolean,
  allDepsCompiledWithBazel?: boolean,
  compilerOpts: ng.CompilerOptions,
  tsHost: ts.CompilerHost, inputs?: {[path: string]: string},
  bazelOpts: BazelOptions,
  files: string[],
  expectedOuts: string[], gatherDiagnostics?: (program: ng.Program) => ng.Diagnostics
}): {diagnostics: ng.Diagnostics, program: ng.Program} {
  let fileLoader: FileLoader;

  if (inputs) {
    fileLoader = new CachedFileLoader(fileCache, allowNonHermeticReads);
    // Resolve the inputs to absolute paths to match TypeScript internals
    const resolvedInputs: {[path: string]: string} = {};
    for (const key of Object.keys(inputs)) {
      resolvedInputs[path.resolve(key)] = inputs[key];
    }
    fileCache.updateCache(resolvedInputs);
  } else {
    fileLoader = new UncachedFileLoader();
  }

  if (!bazelOpts.es5Mode) {
    compilerOpts.annotateForClosureCompiler = true;
    compilerOpts.annotationsAs = 'static fields';
  }

  if (!compilerOpts.rootDirs) {
    throw new Error('rootDirs is not set!');
  }
  const bazelBin = compilerOpts.rootDirs.find(rootDir => BAZEL_BIN.test(rootDir));
  if (!bazelBin) {
    throw new Error(`Couldn't find bazel bin in the rootDirs: ${compilerOpts.rootDirs}`);
  }

  const writtenExpectedOuts = [...expectedOuts];

  const originalWriteFile = tsHost.writeFile.bind(tsHost);
  tsHost.writeFile =
      (fileName: string, content: string, writeByteOrderMark: boolean,
       onError?: (message: string) => void, sourceFiles?: ts.SourceFile[]) => {
        const relative = relativeToRootDirs(fileName, [compilerOpts.rootDir]);
        const expectedIdx = writtenExpectedOuts.findIndex(o => o === relative);
        if (expectedIdx >= 0) {
          writtenExpectedOuts.splice(expectedIdx, 1);
          originalWriteFile(fileName, content, writeByteOrderMark, onError, sourceFiles);
        }
      };

  // Patch fileExists when resolving modules, so that CompilerHost can ask TypeScript to
  // resolve non-existing generated files that don't exist on disk, but are
  // synthetic and added to the `programWithStubs` based on real inputs.
  const generatedFileModuleResolverHost = Object.create(tsHost);
  generatedFileModuleResolverHost.fileExists = (fileName: string) => {
    const match = NGC_GEN_FILES.exec(fileName);
    if (match) {
      const [, file, suffix, ext] = match;
      // Performance: skip looking for files other than .d.ts or .ts
      if (ext !== '.ts' && ext !== '.d.ts') return false;
      if (suffix.indexOf('ngstyle') >= 0) {
        // Look for foo.css on disk
        fileName = file;
      } else {
        // Look for foo.d.ts or foo.ts on disk
        fileName = file + (ext || '');
      }
    }
    return tsHost.fileExists(fileName);
  };

  function generatedFileModuleResolver(
      moduleName: string, containingFile: string,
      compilerOptions: ts.CompilerOptions): ts.ResolvedModuleWithFailedLookupLocations {
    return ts.resolveModuleName(
        moduleName, containingFile, compilerOptions, generatedFileModuleResolverHost);
  }

  const bazelHost = new CompilerHost(
      files, compilerOpts, bazelOpts, tsHost, fileLoader, allowNonHermeticReads,
      generatedFileModuleResolver);
  const origBazelHostFileExist = bazelHost.fileExists;
  bazelHost.fileExists = (fileName: string) => {
    if (NGC_ASSETS.test(fileName)) {
      return tsHost.fileExists(fileName);
    }
    return origBazelHostFileExist.call(bazelHost, fileName);
  };
  const origBazelHostShouldNameModule = bazelHost.shouldNameModule.bind(bazelHost);
  bazelHost.shouldNameModule = (fileName: string) =>
      origBazelHostShouldNameModule(fileName) || NGC_GEN_FILES.test(fileName);

  const ngHost = ng.createCompilerHost({options: compilerOpts, tsHost: bazelHost});

  ngHost.fileNameToModuleName = (importedFilePath: string, containingFilePath: string) => {
    if ((compilerOpts.module === ts.ModuleKind.UMD || compilerOpts.module === ts.ModuleKind.AMD) &&
        ngHost.amdModuleName) {
      return ngHost.amdModuleName({ fileName: importedFilePath } as ts.SourceFile);
    }
//.........這裏部分代碼省略.........

export function compile({allowNonHermeticReads, allDepsCompiledWithBazel = true, compilerOpts,
                         tsHost, bazelOpts, files, inputs, expectedOuts, gatherDiagnostics}: {
  allowNonHermeticReads: boolean,
  allDepsCompiledWithBazel?: boolean,
  compilerOpts: ng.CompilerOptions,
  tsHost: ts.CompilerHost, inputs?: {[path: string]: string},
  bazelOpts: BazelOptions,
  files: string[],
  expectedOuts: string[], gatherDiagnostics?: (program: ng.Program) => ng.Diagnostics
}): {diagnostics: ng.Diagnostics, program: ng.Program} {
  let fileLoader: FileLoader;

  if (bazelOpts.maxCacheSizeMb !== undefined) {
    const maxCacheSizeBytes = bazelOpts.maxCacheSizeMb * (1 << 20);
    fileCache.setMaxCacheSize(maxCacheSizeBytes);
  } else {
    fileCache.resetMaxCacheSize();
  }

  if (inputs) {
    fileLoader = new CachedFileLoader(fileCache, allowNonHermeticReads);
    // Resolve the inputs to absolute paths to match TypeScript internals
    const resolvedInputs: {[path: string]: string} = {};
    const inputKeys = Object.keys(inputs);
    for (let i = 0; i < inputKeys.length; i++) {
      const key = inputKeys[i];
      resolvedInputs[resolveNormalizedPath(key)] = inputs[key];
    }
    fileCache.updateCache(resolvedInputs);
  } else {
    fileLoader = new UncachedFileLoader();
  }

  if (!bazelOpts.es5Mode) {
    compilerOpts.annotateForClosureCompiler = true;
    compilerOpts.annotationsAs = 'static fields';
  }

  // Detect from compilerOpts whether the entrypoint is being invoked in Ivy mode.
  const isInIvyMode = compilerOpts.enableIvy === 'ngtsc' || compilerOpts.enableIvy === 'tsc';

  // Disable downleveling and Closure annotation if in Ivy mode.
  if (isInIvyMode) {
    // In pass-through mode for TypeScript, we want to turn off decorator transpilation entirely.
    // This causes ngc to be have exactly like tsc.
    if (compilerOpts.enableIvy === 'tsc') {
      compilerOpts.annotateForClosureCompiler = false;
    }
    compilerOpts.annotationsAs = 'decorators';
  }

  if (!compilerOpts.rootDirs) {
    throw new Error('rootDirs is not set!');
  }
  const bazelBin = compilerOpts.rootDirs.find(rootDir => BAZEL_BIN.test(rootDir));
  if (!bazelBin) {
    throw new Error(`Couldn't find bazel bin in the rootDirs: ${compilerOpts.rootDirs}`);
  }

  const writtenExpectedOuts = [...expectedOuts];

  const originalWriteFile = tsHost.writeFile.bind(tsHost);
  tsHost.writeFile =
      (fileName: string, content: string, writeByteOrderMark: boolean,
       onError?: (message: string) => void, sourceFiles?: ts.SourceFile[]) => {
        const relative = relativeToRootDirs(fileName.replace(/\\/g, '/'), [compilerOpts.rootDir]);
        const expectedIdx = writtenExpectedOuts.findIndex(o => o === relative);
        if (expectedIdx >= 0) {
          writtenExpectedOuts.splice(expectedIdx, 1);
          originalWriteFile(fileName, content, writeByteOrderMark, onError, sourceFiles);
        }
      };

  // Patch fileExists when resolving modules, so that CompilerHost can ask TypeScript to
  // resolve non-existing generated files that don't exist on disk, but are
  // synthetic and added to the `programWithStubs` based on real inputs.
  const generatedFileModuleResolverHost = Object.create(tsHost);
  generatedFileModuleResolverHost.fileExists = (fileName: string) => {
    const match = NGC_GEN_FILES.exec(fileName);
    if (match) {
      const [, file, suffix, ext] = match;
      // Performance: skip looking for files other than .d.ts or .ts
      if (ext !== '.ts' && ext !== '.d.ts') return false;
      if (suffix.indexOf('ngstyle') >= 0) {
        // Look for foo.css on disk
        fileName = file;
      } else {
        // Look for foo.d.ts or foo.ts on disk
        fileName = file + (ext || '');
      }
    }
    return tsHost.fileExists(fileName);
  };

  function generatedFileModuleResolver(
      moduleName: string, containingFile: string,
      compilerOptions: ts.CompilerOptions): ts.ResolvedModuleWithFailedLookupLocations {
    return ts.resolveModuleName(
        moduleName, containingFile, compilerOptions, generatedFileModuleResolverHost);
  }
//.........這裏部分代碼省略.........

export function compile({allowNonHermeticReads, compilerOpts, tsHost, bazelOpts, files, inputs,
                         expectedOuts, gatherDiagnostics}: {
  allowNonHermeticReads: boolean,
  compilerOpts: ng.CompilerOptions,
  tsHost: ts.CompilerHost, inputs?: {[path: string]: string},
  bazelOpts: BazelOptions,
  files: string[],
  expectedOuts: string[], gatherDiagnostics?: (program: ng.Program) => ng.Diagnostics
}): {diagnostics: ng.Diagnostics, program: ng.Program} {
  let fileLoader: FileLoader;
  if (inputs) {
    fileLoader = new CachedFileLoader(fileCache, ALLOW_NON_HERMETIC_READS);
    // Resolve the inputs to absolute paths to match TypeScript internals
    const resolvedInputs: {[path: string]: string} = {};
    for (const key of Object.keys(inputs)) {
      resolvedInputs[path.resolve(key)] = inputs[key];
    }
    fileCache.updateCache(resolvedInputs);
  } else {
    fileLoader = new UncachedFileLoader();
  }

  if (!bazelOpts.es5Mode) {
    compilerOpts.annotateForClosureCompiler = true;
    compilerOpts.annotationsAs = 'static fields';
  }

  if (!compilerOpts.rootDirs) {
    throw new Error('rootDirs is not set!');
  }

  const writtenExpectedOuts = [...expectedOuts];

  const originalWriteFile = tsHost.writeFile.bind(tsHost);
  tsHost.writeFile =
      (fileName: string, content: string, writeByteOrderMark: boolean,
       onError?: (message: string) => void, sourceFiles?: ts.SourceFile[]) => {
        const relative = relativeToRootDirs(fileName, [compilerOpts.rootDir]);
        const expectedIdx = writtenExpectedOuts.findIndex(o => o === relative);
        if (expectedIdx >= 0) {
          writtenExpectedOuts.splice(expectedIdx, 1);
          originalWriteFile(fileName, content, writeByteOrderMark, onError, sourceFiles);
        }
      };

  // Patch fileExists when resolving modules, so that CompilerHost can ask TypeScript to
  // resolve non-existing generated files that don't exist on disk, but are
  // synthetic and added to the `programWithStubs` based on real inputs.
  const generatedFileModuleResolverHost = Object.create(tsHost);
  generatedFileModuleResolverHost.fileExists = (fileName: string) => {
    const match = NGC_GEN_FILES.exec(fileName);
    if (match) {
      const [, file, suffix, ext] = match;
      // Performance: skip looking for files other than .d.ts or .ts
      if (ext !== '.ts' && ext !== '.d.ts') return false;
      if (suffix.indexOf('ngstyle') >= 0) {
        // Look for foo.css on disk
        fileName = file;
      } else {
        // Look for foo.d.ts or foo.ts on disk
        fileName = file + (ext || '');
      }
    }
    return tsHost.fileExists(fileName);
  };

  function generatedFileModuleResolver(
      moduleName: string, containingFile: string,
      compilerOptions: ts.CompilerOptions): ts.ResolvedModuleWithFailedLookupLocations {
    return ts.resolveModuleName(
        moduleName, containingFile, compilerOptions, generatedFileModuleResolverHost);
  }

  // TODO(alexeagle): does this also work in third_party?
  const allowNonHermeticRead = false;
  const bazelHost = new CompilerHost(
      files, compilerOpts, bazelOpts, tsHost, fileLoader, ALLOW_NON_HERMETIC_READS,
      generatedFileModuleResolver);
  const origBazelHostFileExist = bazelHost.fileExists;
  bazelHost.fileExists = (fileName: string) => {
    if (NGC_ASSETS.test(fileName)) {
      return tsHost.fileExists(fileName);
    }
    return origBazelHostFileExist.call(bazelHost, fileName);
  };

  const ngHost = ng.createCompilerHost({options: compilerOpts, tsHost: bazelHost});

  ngHost.fileNameToModuleName = (importedFilePath: string, containingFilePath: string) =>
      relativeToRootDirs(importedFilePath, compilerOpts.rootDirs).replace(EXT, '');
  ngHost.toSummaryFileName = (fileName: string, referringSrcFileName: string) =>
      ngHost.fileNameToModuleName(fileName, referringSrcFileName);

  const emitCallback: ng.TsEmitCallback = ({
    program,
    targetSourceFile,
    writeFile,
    cancellationToken,
    emitOnlyDtsFiles,
    customTransformers = {},
//.........這裏部分代碼省略.........