Add an optional 'typeParameters' to Element.

pkg/analysis_server/lib/src/protocol_server.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library protocol.server;
 
 import 'package:analysis_server/src/protocol.dart';
 import 'package:analysis_server/src/services/search/search_engine.dart'
     as engine;
 import 'package:analyzer/src/generated/ast.dart' as engine;
@@ skipping 66 matching lines @@
   String correction = error.correction;
   return new AnalysisError(severity, type, location, message,
       correction: correction);
 }
 
 /**
  * Construct based on a value from the analyzer engine.
  */
 Element newElement_fromEngine(engine.Element element) {
   String name = element.displayName;
+  String elementTypeParameters = _getTypeParametersString(element);
   String elementParameters = _getParametersString(element);
   String elementReturnType = _getReturnTypeString(element);
   return new Element(newElementKind_fromEngine(element.kind), name, Element
           .makeFlags(
               isPrivate: element.isPrivate,
               isDeprecated: element.isDeprecated,
               isAbstract: _isAbstract(element),
               isConst: _isConst(element),
               isFinal: _isFinal(element),
               isStatic: _isStatic(element)),
       location: newLocation_fromElement(element),
+      typeParameters: elementTypeParameters,
       parameters: elementParameters,
       returnType: elementReturnType);
 }
 
 /**
  * Construct based on a value from the analyzer engine.
  */
 ElementKind newElementKind_fromEngine(engine.ElementKind kind) {
   if (kind == engine.ElementKind.CLASS) {
     return ElementKind.CLASS;
@@ skipping 236 matching lines @@
   } else if (element is engine.VariableElement) {
     engine.DartType type = element.type;
     return type != null ? type.displayName : 'dynamic';
   } else if (element is engine.FunctionTypeAliasElement) {
     return element.returnType.toString();
   } else {
     return null;
   }
 }
 
+String _getTypeParametersString(engine.Element element) {
+  List<engine.TypeParameterElement> typeParameters;
+  if (element is engine.ClassElement) {
+    typeParameters = element.typeParameters;
+  } else if (element is engine.FunctionTypeAliasElement) {
+    typeParameters = element.typeParameters;
+  }
+  if (typeParameters == null || typeParameters.isEmpty) {
+    return null;
+  }
+  return '<${typeParameters.join(', ')}>';
+}
+
 bool _isAbstract(engine.Element element) {
   // TODO(scheglov) add isAbstract to Element API
   if (element is engine.ClassElement) {
     return element.isAbstract;
   }
   if (element is engine.MethodElement) {
     return element.isAbstract;
   }
   if (element is engine.PropertyAccessorElement) {
     return element.isAbstract;
@@ skipping 43 matching lines @@
     if (lineInfo != null) {
       engine.LineInfo_Location offsetLocation =
           lineInfo.getLocation(range.offset);
       startLine = offsetLocation.lineNumber;
       startColumn = offsetLocation.columnNumber;
     }
   }
   return new Location(
       source.fullName, range.offset, range.length, startLine, startColumn);
 }