@angular/cdk
Version:
Angular Material Component Development Kit
162 lines • 25.6 kB
JavaScript
"use strict";
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.UpdateProject = void 0;
const ts = require("typescript");
const component_resource_collector_1 = require("./component-resource-collector");
const logger_1 = require("./logger");
const parse_tsconfig_1 = require("./utils/parse-tsconfig");
const virtual_host_1 = require("./utils/virtual-host");
/**
* An update project that can be run against individual migrations. An update project
* accepts a TypeScript program and a context that is provided to all migrations. The
* context is usually not used by migrations, but in some cases migrations rely on
* specifics from the tool that performs the update (e.g. the Angular CLI). In those cases,
* the context can provide the necessary specifics to the migrations in a type-safe way.
*/
class UpdateProject {
constructor(
/** Context provided to all migrations. */
_context,
/** TypeScript program using workspace paths. */
_program,
/** File system used for reading, writing and editing files. */
_fileSystem,
/**
* Set of analyzed files. Used for avoiding multiple migration runs if
* files overlap between targets.
*/
_analyzedFiles = new Set(),
/** Logger used for printing messages. */
_logger = logger_1.defaultLogger) {
this._context = _context;
this._program = _program;
this._fileSystem = _fileSystem;
this._analyzedFiles = _analyzedFiles;
this._logger = _logger;
this._typeChecker = this._program.getTypeChecker();
}
/**
* Migrates the project to the specified target version.
* @param migrationTypes Migrations that should be run.
* @param target Version the project should be updated to.
* @param data Upgrade data that is passed to all migration rules.
* @param additionalStylesheetPaths Additional stylesheets that should be migrated, if not
* referenced in an Angular component. This is helpful for global stylesheets in a project.
*/
migrate(migrationTypes, target, data, additionalStylesheetPaths) {
// Create instances of the specified migrations.
const migrations = this._createMigrations(migrationTypes, target, data);
// Creates the component resource collector. The collector can visit arbitrary
// TypeScript nodes and will find Angular component resources. Resources include
// templates and stylesheets. It also captures inline stylesheets and templates.
const resourceCollector = new component_resource_collector_1.ComponentResourceCollector(this._typeChecker, this._fileSystem);
// Collect all of the TypeScript source files we want to migrate. We don't
// migrate type definition files, or source files from external libraries.
const sourceFiles = this._program
.getSourceFiles()
.filter(f => !f.isDeclarationFile && !this._program.isSourceFileFromExternalLibrary(f));
// Helper function that visits a given TypeScript node and collects all referenced
// component resources (i.e. stylesheets or templates). Additionally, the helper
// visits the node in each instantiated migration.
const visitNodeAndCollectResources = (node) => {
migrations.forEach(r => r.visitNode(node));
ts.forEachChild(node, visitNodeAndCollectResources);
resourceCollector.visitNode(node);
};
// Walk through all source file, if it has not been visited before, and
// visit found nodes while collecting potential resources.
sourceFiles.forEach(sourceFile => {
const resolvedPath = this._fileSystem.resolve(sourceFile.fileName);
// Do not visit source files which have been checked as part of a
// previously migrated TypeScript project.
if (!this._analyzedFiles.has(resolvedPath)) {
visitNodeAndCollectResources(sourceFile);
this._analyzedFiles.add(resolvedPath);
}
});
// Walk through all resolved templates and visit them in each instantiated
// migration. Note that this can only happen after source files have been
// visited because we find templates through the TypeScript source files.
resourceCollector.resolvedTemplates.forEach(template => {
// Do not visit the template if it has been checked before. Inline
// templates cannot be referenced multiple times.
if (template.inline || !this._analyzedFiles.has(template.filePath)) {
migrations.forEach(m => m.visitTemplate(template));
this._analyzedFiles.add(template.filePath);
}
});
// Walk through all resolved stylesheets and visit them in each instantiated
// migration. Note that this can only happen after source files have been
// visited because we find stylesheets through the TypeScript source files.
resourceCollector.resolvedStylesheets.forEach(stylesheet => {
// Do not visit the stylesheet if it has been checked before. Inline
// stylesheets cannot be referenced multiple times.
if (stylesheet.inline || !this._analyzedFiles.has(stylesheet.filePath)) {
migrations.forEach(r => r.visitStylesheet(stylesheet));
this._analyzedFiles.add(stylesheet.filePath);
}
});
// In some applications, developers will have global stylesheets which are not
// specified in any Angular component. Therefore we allow for additional stylesheets
// being specified. We visit them in each migration unless they have been already
// discovered before as actual component resource.
if (additionalStylesheetPaths) {
additionalStylesheetPaths.forEach(filePath => {
const resolvedPath = this._fileSystem.resolve(filePath);
const stylesheet = resourceCollector.resolveExternalStylesheet(resolvedPath, null);
// Do not visit stylesheets which have been referenced from a component.
if (!this._analyzedFiles.has(resolvedPath) && stylesheet) {
migrations.forEach(r => r.visitStylesheet(stylesheet));
this._analyzedFiles.add(resolvedPath);
}
});
}
// Call the "postAnalysis" method for each migration.
migrations.forEach(r => r.postAnalysis());
// Collect all failures reported by individual migrations.
const failures = migrations.reduce((res, m) => res.concat(m.failures), []);
// In case there are failures, print these to the CLI logger as warnings.
if (failures.length) {
failures.forEach(({ filePath, message, position }) => {
const lineAndCharacter = position ? `@${position.line + 1}:${position.character + 1}` : '';
this._logger.warn(`${filePath}${lineAndCharacter} - ${message}`);
});
}
return {
hasFailures: !!failures.length,
};
}
/**
* Creates instances of the given migrations with the specified target
* version and data.
*/
_createMigrations(types, target, data) {
const result = [];
for (const ctor of types) {
const instance = new ctor(this._program, this._typeChecker, target, this._context, data, this._fileSystem, this._logger);
instance.init();
if (instance.enabled) {
result.push(instance);
}
}
return result;
}
/**
* Creates a program form the specified tsconfig and patches the host
* to read files and directories through the given file system.
*/
static createProgramFromTsconfig(tsconfigPath, fs) {
const parsed = (0, parse_tsconfig_1.parseTsconfigFile)(fs.resolve(tsconfigPath), fs);
const host = (0, virtual_host_1.createFileSystemCompilerHost)(parsed.options, fs);
return ts.createProgram(parsed.fileNames, parsed.options, host);
}
}
exports.UpdateProject = UpdateProject;
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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport * as ts from 'typescript';\n\nimport {ComponentResourceCollector} from './component-resource-collector';\nimport {FileSystem, WorkspacePath} from './file-system';\nimport {defaultLogger, UpdateLogger} from './logger';\nimport {Migration, MigrationCtor, MigrationFailure} from './migration';\nimport {TargetVersion} from './target-version';\nimport {parseTsconfigFile} from './utils/parse-tsconfig';\nimport {createFileSystemCompilerHost} from './utils/virtual-host';\n\n/**\n * An update project that can be run against individual migrations. An update project\n * accepts a TypeScript program and a context that is provided to all migrations. The\n * context is usually not used by migrations, but in some cases migrations rely on\n * specifics from the tool that performs the update (e.g. the Angular CLI). In those cases,\n * the context can provide the necessary specifics to the migrations in a type-safe way.\n */\nexport class UpdateProject<Context> {\n  private readonly _typeChecker: ts.TypeChecker = this._program.getTypeChecker();\n\n  constructor(\n    /** Context provided to all migrations. */\n    private _context: Context,\n    /** TypeScript program using workspace paths. */\n    private _program: ts.Program,\n    /** File system used for reading, writing and editing files. */\n    private _fileSystem: FileSystem,\n    /**\n     * Set of analyzed files. Used for avoiding multiple migration runs if\n     * files overlap between targets.\n     */\n    private _analyzedFiles: Set<WorkspacePath> = new Set(),\n    /** Logger used for printing messages. */\n    private _logger: UpdateLogger = defaultLogger,\n  ) {}\n\n  /**\n   * Migrates the project to the specified target version.\n   * @param migrationTypes Migrations that should be run.\n   * @param target Version the project should be updated to.\n   * @param data Upgrade data that is passed to all migration rules.\n   * @param additionalStylesheetPaths Additional stylesheets that should be migrated, if not\n   *   referenced in an Angular component. This is helpful for global stylesheets in a project.\n   */\n  migrate<Data>(\n    migrationTypes: MigrationCtor<Data, Context>[],\n    target: TargetVersion,\n    data: Data,\n    additionalStylesheetPaths?: string[],\n  ): {hasFailures: boolean} {\n    // Create instances of the specified migrations.\n    const migrations = this._createMigrations(migrationTypes, target, data);\n    // Creates the component resource collector. The collector can visit arbitrary\n    // TypeScript nodes and will find Angular component resources. Resources include\n    // templates and stylesheets. It also captures inline stylesheets and templates.\n    const resourceCollector = new ComponentResourceCollector(this._typeChecker, this._fileSystem);\n    // Collect all of the TypeScript source files we want to migrate. We don't\n    // migrate type definition files, or source files from external libraries.\n    const sourceFiles = this._program\n      .getSourceFiles()\n      .filter(f => !f.isDeclarationFile && !this._program.isSourceFileFromExternalLibrary(f));\n\n    // Helper function that visits a given TypeScript node and collects all referenced\n    // component resources (i.e. stylesheets or templates). Additionally, the helper\n    // visits the node in each instantiated migration.\n    const visitNodeAndCollectResources = (node: ts.Node) => {\n      migrations.forEach(r => r.visitNode(node));\n      ts.forEachChild(node, visitNodeAndCollectResources);\n      resourceCollector.visitNode(node);\n    };\n\n    // Walk through all source file, if it has not been visited before, and\n    // visit found nodes while collecting potential resources.\n    sourceFiles.forEach(sourceFile => {\n      const resolvedPath = this._fileSystem.resolve(sourceFile.fileName);\n      // Do not visit source files which have been checked as part of a\n      // previously migrated TypeScript project.\n      if (!this._analyzedFiles.has(resolvedPath)) {\n        visitNodeAndCollectResources(sourceFile);\n        this._analyzedFiles.add(resolvedPath);\n      }\n    });\n\n    // Walk through all resolved templates and visit them in each instantiated\n    // migration. Note that this can only happen after source files have been\n    // visited because we find templates through the TypeScript source files.\n    resourceCollector.resolvedTemplates.forEach(template => {\n      // Do not visit the template if it has been checked before. Inline\n      // templates cannot be referenced multiple times.\n      if (template.inline || !this._analyzedFiles.has(template.filePath)) {\n        migrations.forEach(m => m.visitTemplate(template));\n        this._analyzedFiles.add(template.filePath);\n      }\n    });\n\n    // Walk through all resolved stylesheets and visit them in each instantiated\n    // migration. Note that this can only happen after source files have been\n    // visited because we find stylesheets through the TypeScript source files.\n    resourceCollector.resolvedStylesheets.forEach(stylesheet => {\n      // Do not visit the stylesheet if it has been checked before. Inline\n      // stylesheets cannot be referenced multiple times.\n      if (stylesheet.inline || !this._analyzedFiles.has(stylesheet.filePath)) {\n        migrations.forEach(r => r.visitStylesheet(stylesheet));\n        this._analyzedFiles.add(stylesheet.filePath);\n      }\n    });\n\n    // In some applications, developers will have global stylesheets which are not\n    // specified in any Angular component. Therefore we allow for additional stylesheets\n    // being specified. We visit them in each migration unless they have been already\n    // discovered before as actual component resource.\n    if (additionalStylesheetPaths) {\n      additionalStylesheetPaths.forEach(filePath => {\n        const resolvedPath = this._fileSystem.resolve(filePath);\n        const stylesheet = resourceCollector.resolveExternalStylesheet(resolvedPath, null);\n        // Do not visit stylesheets which have been referenced from a component.\n        if (!this._analyzedFiles.has(resolvedPath) && stylesheet) {\n          migrations.forEach(r => r.visitStylesheet(stylesheet));\n          this._analyzedFiles.add(resolvedPath);\n        }\n      });\n    }\n\n    // Call the \"postAnalysis\" method for each migration.\n    migrations.forEach(r => r.postAnalysis());\n\n    // Collect all failures reported by individual migrations.\n    const failures = migrations.reduce(\n      (res, m) => res.concat(m.failures),\n      [] as MigrationFailure[],\n    );\n\n    // In case there are failures, print these to the CLI logger as warnings.\n    if (failures.length) {\n      failures.forEach(({filePath, message, position}) => {\n        const lineAndCharacter = position ? `@${position.line + 1}:${position.character + 1}` : '';\n        this._logger.warn(`${filePath}${lineAndCharacter} - ${message}`);\n      });\n    }\n\n    return {\n      hasFailures: !!failures.length,\n    };\n  }\n\n  /**\n   * Creates instances of the given migrations with the specified target\n   * version and data.\n   */\n  private _createMigrations<Data>(\n    types: MigrationCtor<Data, Context>[],\n    target: TargetVersion,\n    data: Data,\n  ): Migration<Data, Context>[] {\n    const result: Migration<Data, Context>[] = [];\n    for (const ctor of types) {\n      const instance = new ctor(\n        this._program,\n        this._typeChecker,\n        target,\n        this._context,\n        data,\n        this._fileSystem,\n        this._logger,\n      );\n      instance.init();\n      if (instance.enabled) {\n        result.push(instance);\n      }\n    }\n    return result;\n  }\n\n  /**\n   * Creates a program form the specified tsconfig and patches the host\n   * to read files and directories through the given file system.\n   */\n  static createProgramFromTsconfig(tsconfigPath: WorkspacePath, fs: FileSystem): ts.Program {\n    const parsed = parseTsconfigFile(fs.resolve(tsconfigPath), fs);\n    const host = createFileSystemCompilerHost(parsed.options, fs);\n    return ts.createProgram(parsed.fileNames, parsed.options, host);\n  }\n}\n"]}