fix(StaticMetadataExtractor): Map members annotations to all annotations

Closes dart-archive#904

Author: vicb

lib/tools/transformer/metadata_extractor.dart

@@ -325,53 +325,52 @@ class AnnotationExtractor {
       return;
     }
 
-    // Default to using the first acceptable annotation- not sure if
-    // more than one should ever occur.
-    var sourceAnnotation = acceptableAnnotations.first;
-
-    // Clone the annotation so we don't modify the one in the persistent AST.
-    var index = type.annotations.indexOf(sourceAnnotation);
-    var annotation = new AstCloner().visitAnnotation(sourceAnnotation);
-    ResolutionCopier.copyResolutionData(sourceAnnotation, annotation);
-    type.annotations[index] = annotation;
-
-    var mapArg = annotation.arguments.arguments.firstWhere(
-            (arg) => (arg is NamedExpression) && (arg.name.label.name == 'map'),
-            orElse: () => null);
-
-    // If we don't have a 'map' parameter yet, add one.
-    if (mapArg == null) {
-      var map = new MapLiteral(null, null, null, [], null);
-      var label = new Label(new SimpleIdentifier(
-          new _GeneratedToken(TokenType.STRING, 'map')),
-          new _GeneratedToken(TokenType.COLON, ':'));
-      mapArg = new NamedExpression(label, map);
-      annotation.arguments.arguments.add(mapArg);
-    }
+    // Merge attribute annotations in all of the class annotations
+    acceptableAnnotations.forEach((srcAnnotation) {
+      // Clone the annotation so we don't modify the one in the persistent AST.
+      var index = type.annotations.indexOf(srcAnnotation);
+      var annotation = new AstCloner().visitAnnotation(srcAnnotation);
+      ResolutionCopier.copyResolutionData(srcAnnotation, annotation);
+      type.annotations[index] = annotation;
+
+      var mapArg = annotation.arguments.arguments.firstWhere(
+          (arg) => (arg is NamedExpression) && (arg.name.label.name == 'map'),
+          orElse: () => null);
+
+      // If we don't have a 'map' parameter yet, add one.
+      if (mapArg == null) {
+        var map = new MapLiteral(null, null, null, [], null);
+        var label = new Label(new SimpleIdentifier(
+            new _GeneratedToken(TokenType.STRING, 'map')),
+        new _GeneratedToken(TokenType.COLON, ':'));
+        mapArg = new NamedExpression(label, map);
+        annotation.arguments.arguments.add(mapArg);
+      }
 
-    var map = mapArg.expression;
-    if (map is! MapLiteral) {
-      warn('Expected \'map\' argument of $annotation to be a map literal',
-          type.type);
-      return;
-    }
-    memberAnnotations.forEach((memberName, annotation) {
-      var key = annotation.arguments.arguments.first;
-      // If the key already exists then it means we have two annotations for
-      // same member.
-      if (map.entries.any((entry) => entry.key.toString() == key.toString())) {
-        warn('Directive $annotation already contains an entry for $key',
-            type.type);
+      var map = mapArg.expression;
+      if (map is! MapLiteral) {
+        warn('Expected \'map\' argument of $annotation to be a map literal',
+        type.type);
         return;
       }
+      memberAnnotations.forEach((memberName, annotation) {
+        var key = annotation.arguments.arguments.first;
+        // If the key already exists then it means we have two annotations for
+        // same member.
+        if (map.entries.any((entry) => entry.key.toString() == key.toString())) {
+          warn('Directive $annotation already contains an entry for $key',
+          type.type);
+          return;
+        }
 
-      var typeName = annotation.element.enclosingElement.name;
-      var value = '${_annotationToMapping[typeName]}$memberName';
-      var entry = new MapLiteralEntry(
-          key,
-          new _GeneratedToken(TokenType.COLON, ':'),
-          new SimpleStringLiteral(stringToken(value), value));
-      map.entries.add(entry);
+        var typeName = annotation.element.enclosingElement.name;
+        var value = '${_annotationToMapping[typeName]}$memberName';
+        var entry = new MapLiteralEntry(
+            key,
+            new _GeneratedToken(TokenType.COLON, ':'),
+            new SimpleStringLiteral(stringToken(value), value));
+        map.entries.add(entry);
+      });
     });
   }
 

test/tools/transformer/metadata_generator_spec.dart

@@ -115,7 +115,12 @@ main() {
             'a|web/main.dart': '''
                 import 'package:angular/angular.dart';
 
-                @NgDirective(map: {'another-expression': '=>anotherExpression'})
+                @NgDirective(
+                    selector: 'first',
+                    map: {'first-expression': '=>anotherExpression'})
+                @NgDirective(
+                    selector: 'second',
+                    map: {'second-expression': '=>anotherExpression'})
                 class Engine {
                   set anotherExpression(Function) {}
 
@@ -132,8 +137,13 @@ main() {
           ],
           classes: {
             'import_0.Engine': [
-              'const import_1.NgDirective(map: const {'
-                '\'another-expression\': \'=>anotherExpression\', '
+              'const import_1.NgDirective(selector: \'first\', '
+                'map: const {'
+                '\'first-expression\': \'=>anotherExpression\', '
+                '\'two-way-stuff\': \'<=>twoWayStuff\'})',
+              'const import_1.NgDirective(selector: \'second\', '
+                'map: const {'
+                '\'second-expression\': \'=>anotherExpression\', '
                 '\'two-way-stuff\': \'<=>twoWayStuff\'})',
             ]
           });