feat(transformers): update transformers to handle components without @view

Author: vsavkin

modules_dart/transform/lib/src/transform/common/directive_metadata_reader.dart

@@ -141,7 +141,8 @@ class _DirectiveMetadataVisitor extends Object
   List<String> _outputs;
   Map<String, String> _host;
   List<LifecycleHooks> _lifecycleHooks;
-  CompileTemplateMetadata _template;
+  CompileTemplateMetadata _cmpTemplate;
+  CompileTemplateMetadata _viewTemplate;
 
   void reset(AssetId assetId) {
     _lifecycleVisitor.reset(assetId);
@@ -157,23 +158,29 @@ class _DirectiveMetadataVisitor extends Object
     _outputs = <String>[];
     _host = <String, String>{};
     _lifecycleHooks = null;
-    _template = null;
+    _cmpTemplate = null;
+    _viewTemplate = null;
   }
 
   bool get hasMetadata => _hasMetadata;
 
-  CompileDirectiveMetadata createMetadata() => CompileDirectiveMetadata.create(
-      type: _type,
-      isComponent: _isComponent,
-      dynamicLoadable: true, // NOTE(kegluneq): For future optimization.
-      selector: _selector,
-      exportAs: _exportAs,
-      changeDetection: _changeDetection,
-      inputs: _inputs,
-      outputs: _outputs,
-      host: _host,
-      lifecycleHooks: _lifecycleHooks,
-      template: _template);
+  get _template => _viewTemplate != null ? _viewTemplate : _cmpTemplate;
+
+  CompileDirectiveMetadata createMetadata() {
+    return CompileDirectiveMetadata.create(
+        type: _type,
+        isComponent: _isComponent,
+        dynamicLoadable: true,
+    // NOTE(kegluneq): For future optimization.
+        selector: _selector,
+        exportAs: _exportAs,
+        changeDetection: _changeDetection,
+        inputs: _inputs,
+        outputs: _outputs,
+        host: _host,
+        lifecycleHooks: _lifecycleHooks,
+        template: _template);
+  }
 
   @override
   Object visitAnnotation(Annotation node) {
@@ -183,20 +190,26 @@ class _DirectiveMetadataVisitor extends Object
       if (_hasMetadata) {
         throw new FormatException(
             'Only one Directive is allowed per class. '
-            'Found unexpected "$node".',
+                'Found unexpected "$node".',
             '$node' /* source */);
       }
       _isComponent = isComponent;
       _hasMetadata = true;
+      if (isComponent) {
+        var t = new _CompileTemplateMetadataVisitor().visitAnnotation(node);
+        if (t.template != null || t.templateUrl != null) {
+          _cmpTemplate = t;
+        }
+      }
       super.visitAnnotation(node);
     } else if (_annotationMatcher.isView(node, _assetId)) {
-      if (_template != null) {
+      if (_viewTemplate!= null) {
         throw new FormatException(
             'Only one View is allowed per class. '
             'Found unexpected "$node".',
             '$node' /* source */);
       }
-      _template = new _CompileTemplateMetadataVisitor().visitAnnotation(node);
+      _viewTemplate = new _CompileTemplateMetadataVisitor().visitAnnotation(node);
     }
 
     // Annotation we do not recognize - no need to visit.

modules_dart/transform/lib/src/transform/template_compiler/compile_data_creator.dart

@@ -19,8 +19,8 @@ import 'package:code_transformers/assets.dart';
 ///
 /// The returned value wraps the [NgDeps] at `entryPoint` as well as these
 /// created objects.
-Future<CompileDataResults> createCompileData(
-    AssetReader reader, AssetId entryPoint) async {
+Future<CompileDataResults> createCompileData(AssetReader reader,
+    AssetId entryPoint) async {
   return new _CompileDataCreator(reader, entryPoint).createCompileData();
 }
 
@@ -43,6 +43,14 @@ bool _isViewAnnotation(InstanceCreationExpression node) {
   return constructorName.name == 'View';
 }
 
+bool _isComponentAnnotation(InstanceCreationExpression node) {
+  var constructorName = node.constructorName.type.name;
+  if (constructorName is PrefixedIdentifier) {
+    constructorName = constructorName.identifier;
+  }
+  return constructorName.name == 'Component';
+}
+
 /// Creates [ViewDefinition] objects for all `View` `Directive`s defined in
 /// `entryPoint`.
 class _CompileDataCreator {
@@ -68,6 +76,7 @@ class _CompileDataCreator {
         // Note: we use '' because the current file maps to the default prefix.
         var ngMeta = visitor._metadataMap[''];
         var typeName = '${rType.typeName}';
+
         if (ngMeta.types.containsKey(typeName)) {
           visitor.compileData.component = ngMeta.types[typeName];
         } else {
@@ -161,7 +170,6 @@ class _CompileDataCreator {
     return retVal;
   }
 }
-
 /// Visitor responsible for processing the `annotations` property of a
 /// [RegisterType] object, extracting the `directives` dependencies, and adding
 /// their associated [CompileDirectiveMetadata] to the `directives` of a
@@ -187,7 +195,8 @@ class _DirectiveDependenciesVisitor extends Object
   /// reflector.
   @override
   Object visitInstanceCreationExpression(InstanceCreationExpression node) {
-    if (_isViewAnnotation(node)) {
+//    if (_isViewAnnotation(node)) {
+    if (_isViewAnnotation(node) || _isComponentAnnotation(node)) {
       compileData = new NormalizedComponentWithViewDirectives(
           null, <CompileDirectiveMetadata>[]);
       node.visitChildren(this);
@@ -202,7 +211,7 @@ class _DirectiveDependenciesVisitor extends Object
     if (node.name is! Label || node.name.label is! SimpleIdentifier) {
       logger.error(
           'Angular 2 currently only supports simple identifiers in directives.'
-          ' Source: ${node}');
+              ' Source: ${node}');
       return null;
     }
     if ('${node.name.label}' == 'directives') {
@@ -234,7 +243,7 @@ class _DirectiveDependenciesVisitor extends Object
       } else {
         logger.error(
             'Angular 2 currently only supports simple and prefixed identifiers '
-            'as values for "directives". Source: $node');
+                'as values for "directives". Source: $node');
         return;
       }
       if (ngMeta.types.containsKey(name)) {

modules_dart/transform/test/transform/integration/simple_annotation_files/bar.dart

@@ -2,8 +2,7 @@ library bar;
 
 import 'package:angular2/src/core/metadata.dart';
 
-@Component(selector: '[soup]')
-@View(template: '')
+@Component(selector: '[soup]', template: 'aa')
 class MyComponent {
   MyComponent();
 }

modules_dart/transform/test/transform/integration/simple_annotation_files/expected/bar.ng_deps.dart

@@ -16,8 +16,7 @@ void initReflector() {
     ..registerType(
         MyComponent,
         new _ngRef.ReflectionInfo(const [
-          const Component(selector: '[soup]'),
-          const View(template: ''),
+          const Component(selector: '[soup]', template: 'aa'),
           _templates.HostMyComponentTemplate
         ], const [], () => new MyComponent()));
   i0.initReflector();