| 1 | 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* as ts from 'typescript';\nimport { normalize, resolve } from '@angular-devkit/core';\nimport { Tree, DirEntry } from '@angular-devkit/schematics';\n\nexport function visitTSSourceFiles<Result = void>(\n tree: Tree,\n visitor: (\n sourceFile: ts.SourceFile,\n tree: Tree,\n result?: Result\n ) => Result | undefined\n): Result | undefined {\n let result: Result | undefined = undefined;\n for (const sourceFile of visit(tree.root)) {\n result = visitor(sourceFile, tree, result);\n }\n\n return result;\n}\n\nexport function visitTemplates(\n tree: Tree,\n visitor: (\n template: {\n fileName: string;\n content: string;\n inline: boolean;\n start: number;\n },\n tree: Tree\n ) => void\n): void {\n visitTSSourceFiles(tree, (source) => {\n visitComponents(source, (_, decoratorExpressionNode) => {\n ts.forEachChild(decoratorExpressionNode, function findTemplates(n) {\n if (ts.isPropertyAssignment(n) && ts.isIdentifier(n.name)) {\n if (\n n.name.text === 'template' &&\n ts.isStringLiteralLike(n.initializer)\n ) {\n // Need to add an offset of one to the start because the template quotes are\n // not part of the template content.\n const templateStartIdx = n.initializer.getStart() + 1;\n visitor(\n {\n fileName: source.fileName,\n content: n.initializer.text,\n inline: true,\n start: templateStartIdx,\n },\n tree\n );\n return;\n } else if (\n n.name.text === 'templateUrl' &&\n ts.isStringLiteralLike(n.initializer)\n ) {\n const parts = normalize(source.fileName).split('/').slice(0, -1);\n const templatePath = resolve(\n normalize(parts.join('/')),\n normalize(n.initializer.text)\n );\n if (!tree.exists(templatePath)) {\n return;\n }\n\n const fileContent = tree.read(templatePath);\n if (!fileContent) {\n return;\n }\n\n visitor(\n {\n fileName: templatePath,\n content: fileContent.toString(),\n inline: false,\n start: 0,\n },\n tree\n );\n return;\n }\n }\n\n ts.forEachChild(n, findTemplates);\n });\n });\n });\n}\n\nexport function visitNgModuleImports(\n sourceFile: ts.SourceFile,\n callback: (\n importNode: ts.PropertyAssignment,\n elementExpressions: ts.NodeArray<ts.Expression>\n ) => void\n) {\n visitNgModuleProperty(sourceFile, callback, 'imports');\n}\n\nexport function visitNgModuleExports(\n sourceFile: ts.SourceFile,\n callback: (\n exportNode: ts.PropertyAssignment,\n elementExpressions: ts.NodeArray<ts.Expression>\n ) => void\n) {\n visitNgModuleProperty(sourceFile, callback, 'exports');\n}\n\nfunction visitNgModuleProperty(\n sourceFile: ts.SourceFile,\n callback: (\n nodes: ts.PropertyAssignment,\n elementExpressions: ts.NodeArray<ts.Expression>\n ) => void,\n property: string\n) {\n visitNgModules(sourceFile, (_, decoratorExpressionNode) => {\n ts.forEachChild(decoratorExpressionNode, function findTemplates(n) {\n if (\n ts.isPropertyAssignment(n) &&\n ts.isIdentifier(n.name) &&\n n.name.text === property &&\n ts.isArrayLiteralExpression(n.initializer)\n ) {\n callback(n, n.initializer.elements);\n return;\n }\n\n ts.forEachChild(n, findTemplates);\n });\n });\n}\nexport function visitComponents(\n sourceFile: ts.SourceFile,\n callback: (\n classDeclarationNode: ts.ClassDeclaration,\n decoratorExpressionNode: ts.ObjectLiteralExpression\n ) => void\n) {\n visitDecorator(sourceFile, 'Component', callback);\n}\n\nexport function visitNgModules(\n sourceFile: ts.SourceFile,\n callback: (\n classDeclarationNode: ts.ClassDeclaration,\n decoratorExpressionNode: ts.ObjectLiteralExpression\n ) => void\n) {\n visitDecorator(sourceFile, 'NgModule', callback);\n}\n\nexport function visitDecorator(\n sourceFile: ts.SourceFile,\n decoratorName: string,\n callback: (\n classDeclarationNode: ts.ClassDeclaration,\n decoratorExpressionNode: ts.ObjectLiteralExpression\n ) => void\n) {\n ts.forEachChild(sourceFile, function findClassDeclaration(node) {\n if (!ts.isClassDeclaration(node)) {\n ts.forEachChild(node, findClassDeclaration);\n }\n\n const classDeclarationNode = node as ts.ClassDeclaration;\n const decorators = ts.getDecorators(classDeclarationNode);\n\n if (!decorators || !decorators.length) {\n return;\n }\n\n const componentDecorator = decorators.find((d) => {\n return (\n ts.isCallExpression(d.expression) &&\n ts.isIdentifier(d.expression.expression) &&\n d.expression.expression.text === decoratorName\n );\n });\n\n if (!componentDecorator) {\n return;\n }\n\n const { expression } = componentDecorator;\n if (!ts.isCallExpression(expression)) {\n return;\n }\n\n const [arg] = expression.arguments;\n if (!arg || !ts.isObjectLiteralExpression(arg)) {\n return;\n }\n\n callback(classDeclarationNode, arg);\n });\n}\n\nfunction* visit(directory: DirEntry): IterableIterator<ts.SourceFile> {\n for (const path of directory.subfiles) {\n if (path.endsWith('.ts') && !path.endsWith('.d.ts')) {\n const entry = directory.file(path);\n if (entry) {\n const content = entry.content;\n const source = ts.createSourceFile(\n entry.path,\n content.toString().replace(/^\\uFEFF/, ''),\n ts.ScriptTarget.Latest,\n true\n );\n yield source;\n }\n }\n }\n\n for (const path of directory.subdirs) {\n if (path === 'node_modules') {\n continue;\n }\n\n yield* visit(directory.dir(path));\n }\n}\n"]} |