01677b21b6
Current we need to create and override certain compiler host methods in every schematic because schematics use a virtual fs. We this change we extract this logic to a common util. PR Close #32827
93 lines
3.9 KiB
TypeScript
93 lines
3.9 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {Rule, SchematicsException, Tree} from '@angular-devkit/schematics';
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import {dirname, relative} from 'path';
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import * as ts from 'typescript';
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import {getProjectTsConfigPaths} from '../../utils/project_tsconfig_paths';
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import {createMigrationCompilerHost} from '../../utils/typescript/compiler_host';
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import {parseTsconfigFile} from '../../utils/typescript/parse_tsconfig';
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import {COMMON_IMPORT, DOCUMENT_TOKEN_NAME, DocumentImportVisitor, ResolvedDocumentImport} from './document_import_visitor';
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import {addToImport, createImport, removeFromImport} from './move-import';
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/** Entry point for the V8 move-document migration. */
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export default function(): Rule {
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return (tree: Tree) => {
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const {buildPaths, testPaths} = getProjectTsConfigPaths(tree);
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const basePath = process.cwd();
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if (!buildPaths.length && !testPaths.length) {
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throw new SchematicsException(`Could not find any tsconfig file. Cannot migrate DOCUMENT
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to new import source.`);
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}
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for (const tsconfigPath of [...buildPaths, ...testPaths]) {
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runMoveDocumentMigration(tree, tsconfigPath, basePath);
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}
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};
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}
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/**
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* Runs the DOCUMENT InjectionToken import migration for the given TypeScript project. The
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* schematic analyzes the imports within the project and moves the deprecated symbol to the
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* new import source.
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*/
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function runMoveDocumentMigration(tree: Tree, tsconfigPath: string, basePath: string) {
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const parsed = parseTsconfigFile(tsconfigPath, dirname(tsconfigPath));
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const host = createMigrationCompilerHost(tree, parsed.options, basePath);
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const program = ts.createProgram(parsed.fileNames, parsed.options, host);
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const typeChecker = program.getTypeChecker();
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const visitor = new DocumentImportVisitor(typeChecker);
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const sourceFiles = program.getSourceFiles().filter(
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f => !f.isDeclarationFile && !program.isSourceFileFromExternalLibrary(f));
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// Analyze source files by finding imports.
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sourceFiles.forEach(sourceFile => visitor.visitNode(sourceFile));
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const {importsMap} = visitor;
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// Walk through all source files that contain resolved queries and update
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// the source files if needed. Note that we need to update multiple queries
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// within a source file within the same recorder in order to not throw off
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// the TypeScript node offsets.
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importsMap.forEach((resolvedImport: ResolvedDocumentImport, sourceFile: ts.SourceFile) => {
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const {platformBrowserImport, commonImport, documentElement} = resolvedImport;
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if (!documentElement || !platformBrowserImport) {
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return;
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}
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const update = tree.beginUpdate(relative(basePath, sourceFile.fileName));
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const platformBrowserDeclaration = platformBrowserImport.parent.parent;
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const newPlatformBrowserText =
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removeFromImport(platformBrowserImport, sourceFile, DOCUMENT_TOKEN_NAME);
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const newCommonText = commonImport ?
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addToImport(commonImport, sourceFile, documentElement.name, documentElement.propertyName) :
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createImport(COMMON_IMPORT, sourceFile, documentElement.name, documentElement.propertyName);
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// Replace the existing query decorator call expression with the updated
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// call expression node.
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update.remove(platformBrowserDeclaration.getStart(), platformBrowserDeclaration.getWidth());
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update.insertRight(platformBrowserDeclaration.getStart(), newPlatformBrowserText);
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if (commonImport) {
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const commonDeclaration = commonImport.parent.parent;
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update.remove(commonDeclaration.getStart(), commonDeclaration.getWidth());
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update.insertRight(commonDeclaration.getStart(), newCommonText);
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} else {
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update.insertRight(platformBrowserDeclaration.getStart(), newCommonText);
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}
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tree.commitUpdate(update);
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});
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}
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