492 lines
19 KiB
TypeScript
492 lines
19 KiB
TypeScript
/**
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* Fake implementations of various compiler dependencies.
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*/
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namespace fakes {
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const processExitSentinel = new Error("System exit");
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export interface SystemOptions {
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executingFilePath?: string;
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newLine?: "\r\n" | "\n";
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env?: Record<string, string>;
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}
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/**
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* A fake `ts.System` that leverages a virtual file system.
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*/
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export class System implements ts.System {
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public readonly vfs: vfs.FileSystem;
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public readonly args: string[] = [];
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public readonly output: string[] = [];
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public readonly newLine: string;
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public readonly useCaseSensitiveFileNames: boolean;
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public exitCode: number | undefined;
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private readonly _executingFilePath: string | undefined;
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private readonly _env: Record<string, string> | undefined;
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constructor(vfs: vfs.FileSystem, { executingFilePath, newLine = "\r\n", env }: SystemOptions = {}) {
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this.vfs = vfs.isReadonly ? vfs.shadow() : vfs;
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this.useCaseSensitiveFileNames = !this.vfs.ignoreCase;
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this.newLine = newLine;
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this._executingFilePath = executingFilePath;
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this._env = env;
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}
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public write(message: string) {
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this.output.push(message);
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}
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public readFile(path: string) {
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try {
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const content = this.vfs.readFileSync(path, "utf8");
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return content === undefined ? undefined : utils.removeByteOrderMark(content);
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}
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catch {
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return undefined;
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}
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}
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public writeFile(path: string, data: string, writeByteOrderMark?: boolean): void {
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this.vfs.mkdirpSync(vpath.dirname(path));
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this.vfs.writeFileSync(path, writeByteOrderMark ? utils.addUTF8ByteOrderMark(data) : data);
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}
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public deleteFile(path: string) {
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this.vfs.unlinkSync(path);
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}
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public fileExists(path: string) {
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const stats = this._getStats(path);
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return stats ? stats.isFile() : false;
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}
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public directoryExists(path: string) {
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const stats = this._getStats(path);
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return stats ? stats.isDirectory() : false;
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}
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public createDirectory(path: string): void {
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this.vfs.mkdirpSync(path);
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}
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public getCurrentDirectory() {
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return this.vfs.cwd();
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}
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public getDirectories(path: string) {
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const result: string[] = [];
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try {
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for (const file of this.vfs.readdirSync(path)) {
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if (this.vfs.statSync(vpath.combine(path, file)).isDirectory()) {
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result.push(file);
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}
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}
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}
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catch { /*ignore*/ }
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return result;
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}
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public readDirectory(path: string, extensions?: ReadonlyArray<string>, exclude?: ReadonlyArray<string>, include?: ReadonlyArray<string>, depth?: number): string[] {
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return ts.matchFiles(path, extensions, exclude, include, this.useCaseSensitiveFileNames, this.getCurrentDirectory(), depth, path => this.getAccessibleFileSystemEntries(path), path => this.realpath(path));
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}
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public getAccessibleFileSystemEntries(path: string): ts.FileSystemEntries {
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const files: string[] = [];
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const directories: string[] = [];
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try {
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for (const file of this.vfs.readdirSync(path)) {
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try {
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const stats = this.vfs.statSync(vpath.combine(path, file));
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if (stats.isFile()) {
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files.push(file);
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}
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else if (stats.isDirectory()) {
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directories.push(file);
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}
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}
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catch { /*ignored*/ }
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}
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}
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catch { /*ignored*/ }
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return { files, directories };
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}
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public exit(exitCode?: number) {
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this.exitCode = exitCode;
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throw processExitSentinel;
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}
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public getFileSize(path: string) {
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const stats = this._getStats(path);
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return stats && stats.isFile() ? stats.size : 0;
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}
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public resolvePath(path: string) {
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return vpath.resolve(this.vfs.cwd(), path);
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}
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public getExecutingFilePath() {
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if (this._executingFilePath === undefined) return ts.notImplemented();
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return this._executingFilePath;
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}
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public getModifiedTime(path: string) {
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const stats = this._getStats(path);
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return stats ? stats.mtime : undefined!; // TODO: GH#18217
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}
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public setModifiedTime(path: string, time: Date) {
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this.vfs.utimesSync(path, time, time);
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}
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public createHash(data: string): string {
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return data;
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}
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public realpath(path: string) {
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try {
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return this.vfs.realpathSync(path);
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}
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catch {
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return path;
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}
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}
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public getEnvironmentVariable(name: string): string {
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return (this._env && this._env[name])!; // TODO: GH#18217
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}
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private _getStats(path: string) {
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try {
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return this.vfs.existsSync(path) ? this.vfs.statSync(path) : undefined;
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}
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catch {
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return undefined;
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}
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}
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}
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/**
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* A fake `ts.ParseConfigHost` that leverages a virtual file system.
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*/
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export class ParseConfigHost implements ts.ParseConfigHost {
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public readonly sys: System;
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constructor(sys: System | vfs.FileSystem) {
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if (sys instanceof vfs.FileSystem) sys = new System(sys);
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this.sys = sys;
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}
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public get vfs() {
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return this.sys.vfs;
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}
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public get useCaseSensitiveFileNames() {
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return this.sys.useCaseSensitiveFileNames;
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}
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public fileExists(fileName: string): boolean {
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return this.sys.fileExists(fileName);
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}
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public directoryExists(directoryName: string): boolean {
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return this.sys.directoryExists(directoryName);
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}
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public readFile(path: string): string | undefined {
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return this.sys.readFile(path);
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}
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public readDirectory(path: string, extensions: string[], excludes: string[], includes: string[], depth: number): string[] {
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return this.sys.readDirectory(path, extensions, excludes, includes, depth);
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}
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}
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/**
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* A fake `ts.CompilerHost` that leverages a virtual file system.
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*/
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export class CompilerHost implements ts.CompilerHost {
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public readonly sys: System;
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public readonly defaultLibLocation: string;
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public readonly outputs: documents.TextDocument[] = [];
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private readonly _outputsMap: collections.SortedMap<string, number>;
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public readonly traces: string[] = [];
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public readonly shouldAssertInvariants = !Harness.lightMode;
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private _setParentNodes: boolean;
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private _sourceFiles: collections.SortedMap<string, ts.SourceFile>;
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private _parseConfigHost: ParseConfigHost | undefined;
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private _newLine: string;
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constructor(sys: System | vfs.FileSystem, options = ts.getDefaultCompilerOptions(), setParentNodes = false) {
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if (sys instanceof vfs.FileSystem) sys = new System(sys);
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this.sys = sys;
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this.defaultLibLocation = sys.vfs.meta.get("defaultLibLocation") || "";
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this._newLine = ts.getNewLineCharacter(options, () => this.sys.newLine);
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this._sourceFiles = new collections.SortedMap<string, ts.SourceFile>({ comparer: sys.vfs.stringComparer, sort: "insertion" });
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this._setParentNodes = setParentNodes;
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this._outputsMap = new collections.SortedMap(this.vfs.stringComparer);
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}
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public get vfs() {
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return this.sys.vfs;
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}
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public get parseConfigHost() {
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return this._parseConfigHost || (this._parseConfigHost = new ParseConfigHost(this.sys));
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}
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public getCurrentDirectory(): string {
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return this.sys.getCurrentDirectory();
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}
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public useCaseSensitiveFileNames(): boolean {
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return this.sys.useCaseSensitiveFileNames;
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}
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public getNewLine(): string {
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return this._newLine;
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}
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public getCanonicalFileName(fileName: string): string {
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return this.sys.useCaseSensitiveFileNames ? fileName : fileName.toLowerCase();
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}
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public deleteFile(fileName: string) {
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this.sys.deleteFile(fileName);
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}
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public fileExists(fileName: string): boolean {
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return this.sys.fileExists(fileName);
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}
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public directoryExists(directoryName: string): boolean {
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return this.sys.directoryExists(directoryName);
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}
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public getModifiedTime(fileName: string) {
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return this.sys.getModifiedTime(fileName);
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}
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public setModifiedTime(fileName: string, time: Date) {
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return this.sys.setModifiedTime(fileName, time);
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}
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public getDirectories(path: string): string[] {
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return this.sys.getDirectories(path);
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}
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public readDirectory(path: string, extensions?: ReadonlyArray<string>, exclude?: ReadonlyArray<string>, include?: ReadonlyArray<string>, depth?: number): string[] {
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return this.sys.readDirectory(path, extensions, exclude, include, depth);
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}
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public readFile(path: string): string | undefined {
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return this.sys.readFile(path);
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}
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public writeFile(fileName: string, content: string, writeByteOrderMark: boolean) {
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if (writeByteOrderMark) content = utils.addUTF8ByteOrderMark(content);
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this.sys.writeFile(fileName, content);
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const document = new documents.TextDocument(fileName, content);
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document.meta.set("fileName", fileName);
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this.vfs.filemeta(fileName).set("document", document);
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if (!this._outputsMap.has(document.file)) {
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this._outputsMap.set(document.file, this.outputs.length);
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this.outputs.push(document);
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}
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this.outputs[this._outputsMap.get(document.file)!] = document;
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}
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public trace(s: string): void {
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this.traces.push(s);
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}
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public realpath(path: string): string {
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return this.sys.realpath(path);
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}
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public getDefaultLibLocation(): string {
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return vpath.resolve(this.getCurrentDirectory(), this.defaultLibLocation);
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}
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public getDefaultLibFileName(options: ts.CompilerOptions): string {
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return vpath.resolve(this.getDefaultLibLocation(), ts.getDefaultLibFileName(options));
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}
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public getSourceFile(fileName: string, languageVersion: number): ts.SourceFile | undefined {
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const canonicalFileName = this.getCanonicalFileName(vpath.resolve(this.getCurrentDirectory(), fileName));
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const existing = this._sourceFiles.get(canonicalFileName);
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if (existing) return existing;
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const content = this.readFile(canonicalFileName);
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if (content === undefined) return undefined;
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// A virtual file system may shadow another existing virtual file system. This
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// allows us to reuse a common virtual file system structure across multiple
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// tests. If a virtual file is a shadow, it is likely that the file will be
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// reused across multiple tests. In that case, we cache the SourceFile we parse
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// so that it can be reused across multiple tests to avoid the cost of
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// repeatedly parsing the same file over and over (such as lib.d.ts).
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const cacheKey = this.vfs.shadowRoot && `SourceFile[languageVersion=${languageVersion},setParentNodes=${this._setParentNodes}]`;
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if (cacheKey) {
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const meta = this.vfs.filemeta(canonicalFileName);
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const sourceFileFromMetadata = meta.get(cacheKey) as ts.SourceFile | undefined;
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if (sourceFileFromMetadata && sourceFileFromMetadata.getFullText() === content) {
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this._sourceFiles.set(canonicalFileName, sourceFileFromMetadata);
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return sourceFileFromMetadata;
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}
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}
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const parsed = ts.createSourceFile(fileName, content, languageVersion, this._setParentNodes || this.shouldAssertInvariants);
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if (this.shouldAssertInvariants) {
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Utils.assertInvariants(parsed, /*parent*/ undefined);
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}
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this._sourceFiles.set(canonicalFileName, parsed);
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if (cacheKey) {
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// store the cached source file on the unshadowed file with the same version.
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const stats = this.vfs.statSync(canonicalFileName);
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let fs = this.vfs;
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while (fs.shadowRoot) {
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try {
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const shadowRootStats = fs.shadowRoot.existsSync(canonicalFileName) ? fs.shadowRoot.statSync(canonicalFileName) : undefined!; // TODO: GH#18217
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if (shadowRootStats.dev !== stats.dev ||
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shadowRootStats.ino !== stats.ino ||
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shadowRootStats.mtimeMs !== stats.mtimeMs) {
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break;
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}
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fs = fs.shadowRoot;
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}
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catch {
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break;
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}
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}
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if (fs !== this.vfs) {
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fs.filemeta(canonicalFileName).set(cacheKey, parsed);
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}
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}
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return parsed;
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}
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}
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export type ExpectedDiagnostic = [ts.DiagnosticMessage, ...(string | number)[]];
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function expectedDiagnosticToText([message, ...args]: ExpectedDiagnostic) {
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let text = ts.getLocaleSpecificMessage(message);
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if (args.length) {
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text = ts.formatStringFromArgs(text, args);
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}
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return text;
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}
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function compareProgramBuildInfoDiagnostic(a: ts.ProgramBuildInfoDiagnostic, b: ts.ProgramBuildInfoDiagnostic) {
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return ts.compareStringsCaseSensitive(ts.isString(a) ? a : a[0], ts.isString(b) ? b : b[0]);
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}
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export const version = "FakeTSVersion";
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export class SolutionBuilderHost extends CompilerHost implements ts.SolutionBuilderHost<ts.BuilderProgram> {
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createProgram = ts.createEmitAndSemanticDiagnosticsBuilderProgram;
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readFile(path: string) {
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const value = super.readFile(path);
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if (!value || !ts.isBuildInfoFile(path)) return value;
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const buildInfo = ts.getBuildInfo(value);
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if (buildInfo.program) {
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// Fix lib signatures
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for (const path of ts.getOwnKeys(buildInfo.program.fileInfos)) {
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if (ts.startsWith(path, "/lib/")) {
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const currentValue = buildInfo.program.fileInfos[path];
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ts.Debug.assert(currentValue.signature === path);
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ts.Debug.assert(currentValue.signature === currentValue.version);
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const text = super.readFile(path)!;
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const signature = ts.generateDjb2Hash(text);
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buildInfo.program.fileInfos[path] = { version: signature, signature };
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}
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}
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}
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ts.Debug.assert(buildInfo.version === version);
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buildInfo.version = ts.version;
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return ts.getBuildInfoText(buildInfo);
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}
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public writeFile(fileName: string, content: string, writeByteOrderMark: boolean) {
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if (!ts.isBuildInfoFile(fileName)) return super.writeFile(fileName, content, writeByteOrderMark);
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const buildInfo = ts.getBuildInfo(content);
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if (buildInfo.program) {
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// Fix lib signatures
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for (const path of ts.getOwnKeys(buildInfo.program.fileInfos)) {
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if (ts.startsWith(path, "/lib/")) {
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const currentValue = buildInfo.program.fileInfos[path];
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ts.Debug.assert(currentValue.signature === currentValue.version);
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buildInfo.program.fileInfos[path] = { version: path, signature: path };
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}
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}
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// reference Map
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if (buildInfo.program.referencedMap) {
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const referencedMap: ts.MapLike<string[]> = {};
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for (const path of ts.getOwnKeys(buildInfo.program.referencedMap).sort()) {
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referencedMap[path] = buildInfo.program.referencedMap[path].sort();
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}
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buildInfo.program.referencedMap = referencedMap;
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}
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// exportedModulesMap
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if (buildInfo.program.exportedModulesMap) {
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const exportedModulesMap: ts.MapLike<string[]> = {};
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for (const path of ts.getOwnKeys(buildInfo.program.exportedModulesMap).sort()) {
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exportedModulesMap[path] = buildInfo.program.exportedModulesMap[path].sort();
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}
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buildInfo.program.exportedModulesMap = exportedModulesMap;
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}
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// semanticDiagnosticsPerFile
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if (buildInfo.program.semanticDiagnosticsPerFile) {
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buildInfo.program.semanticDiagnosticsPerFile.sort(compareProgramBuildInfoDiagnostic);
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}
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}
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buildInfo.version = version;
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super.writeFile(fileName, ts.getBuildInfoText(buildInfo), writeByteOrderMark);
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}
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now() {
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return new Date(this.sys.vfs.time());
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}
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diagnostics: ts.Diagnostic[] = [];
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reportDiagnostic(diagnostic: ts.Diagnostic) {
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this.diagnostics.push(diagnostic);
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}
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reportSolutionBuilderStatus(diagnostic: ts.Diagnostic) {
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this.diagnostics.push(diagnostic);
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}
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clearDiagnostics() {
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this.diagnostics.length = 0;
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}
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assertDiagnosticMessages(...expectedDiagnostics: ExpectedDiagnostic[]) {
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const actual = this.diagnostics.slice().map(d => d.messageText as string);
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const expected = expectedDiagnostics.map(expectedDiagnosticToText);
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assert.deepEqual(actual, expected, "Diagnostic arrays did not match");
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}
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printDiagnostics(header = "== Diagnostics ==") {
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const out = ts.createDiagnosticReporter(ts.sys);
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ts.sys.write(header + "\r\n");
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for (const d of this.diagnostics) {
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out(d);
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}
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}
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}
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}
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