104 lines
2.9 KiB
Dart
104 lines
2.9 KiB
Dart
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library angular2.src.transform.common.parser;
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import 'dart:async';
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import 'package:analyzer/analyzer.dart';
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import 'package:angular2/src/transform/common/asset_reader.dart';
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import 'package:angular2/src/transform/common/logging.dart';
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import 'package:angular2/src/transform/common/names.dart';
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import 'package:barback/barback.dart';
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import 'package:code_transformers/assets.dart';
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import 'registered_type.dart';
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export 'registered_type.dart';
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class Parser {
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final AssetReader _reader;
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final _ParseNgDepsVisitor _visitor = new _ParseNgDepsVisitor();
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Parser(AssetReader this._reader);
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Future<List<NgDeps>> parseRecursive(AssetId id) async {
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return _recurse(id);
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}
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Future<NgDeps> parse(AssetId id) async {
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if (!(await _reader.hasInput(id))) return null;
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var ngDeps = new NgDeps(await _reader.readAsString(id));
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_visitor.ngDeps = ngDeps;
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parseCompilationUnit(ngDeps.code, name: id.path).accept(_visitor);
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return ngDeps;
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}
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/// Parses the `.ngDeps.dart` file represented by [id] into an [NgDeps]
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/// object. All `.ngDeps.dart` files imported by [id] are then parsed. The
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/// results are added to [allDeps].
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Future<List<NgDeps>> _recurse(AssetId id,
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[List<NgDeps> allDeps, Set<AssetId> seen]) async {
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if (seen == null) seen = new Set<AssetId>();
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if (seen.contains(id)) return;
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seen.add(id);
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if (allDeps == null) allDeps = [];
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var ngDeps = await parse(id);
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allDeps.add(ngDeps);
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var toWait = [];
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ngDeps.imports.forEach((ImportDirective node) {
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var uri = stringLiteralToString(node.uri);
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if (uri.endsWith(DEPS_EXTENSION)) {
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var importId = uriToAssetId(id, uri, logger, null);
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toWait.add(_recurse(importId, allDeps, seen));
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}
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});
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return Future.wait(toWait).then((_) => allDeps);
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}
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}
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class NgDeps {
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final String code;
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final List<ImportDirective> imports = [];
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final List<ExportDirective> exports = [];
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final List<RegisteredType> registeredTypes = [];
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FunctionDeclaration setupMethod;
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NgDeps(this.code);
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}
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class _ParseNgDepsVisitor extends Object with RecursiveAstVisitor<Object> {
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NgDeps ngDeps = null;
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_RegisteredTypeBuilder current = null;
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@override
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Object visitImportDirective(ImportDirective node) {
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ngDeps.imports.add(node);
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return super.visitImportDirective(node);
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}
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@override
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Object visitExportDirective(ExportDirective node) {
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ngDeps.exports.add(node);
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return super.visitExportDirective(node);
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}
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@override
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Object visitFunctionDeclaration(FunctionDeclaration node) {
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if ('${node.name}' == SETUP_METHOD_NAME) {
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ngDeps.setupMethod = node;
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}
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return super.visitFunctionDeclaration(node);
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}
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@override
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Object visitMethodInvocation(MethodInvocation node) {
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var isRegisterType = '${node.methodName}' == REGISTER_TYPE_METHOD_NAME;
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if (isRegisterType) {
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ngDeps.registeredTypes.add(new RegisteredType.fromMethodInvocation(node));
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}
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return super.visitMethodInvocation(node);
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}
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}
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