Introduce code to generate summaries from an element model.

pkg/analyzer/lib/src/generated/testing/element_factory.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 engine.testing.element_factory;
 
 import 'dart:collection';
 
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/constant.dart';
@@ skipping 24 matching lines @@
     }
     return _objectElement;
   }
 
   static InterfaceType get objectType => object.type;
 
   static ClassElementImpl classElement(
       String typeName, InterfaceType superclassType,
       [List<String> parameterNames]) {
     ClassElementImpl element = new ClassElementImpl(typeName, 0);
+    element.constructors = const <ConstructorElement>[];
     element.supertype = superclassType;
     InterfaceTypeImpl type = new InterfaceTypeImpl(element);
     element.type = type;
     if (parameterNames != null) {
       int count = parameterNames.length;
       if (count > 0) {
         List<TypeParameterElementImpl> typeParameters =
             new List<TypeParameterElementImpl>(count);
         List<TypeParameterTypeImpl> typeParameterTypes =
             new List<TypeParameterTypeImpl>(count);
@@ skipping 516 matching lines @@
       ConstTopLevelVariableElementImpl constant =
           new ConstTopLevelVariableElementImpl(AstFactory.identifier3(name));
       constant.constantInitializer = AstFactory.instanceCreationExpression2(
           Keyword.CONST, AstFactory.typeName(type.element));
       variable = constant;
     } else {
       variable = new TopLevelVariableElementImpl(name, -1);
     }
     variable.const3 = isConst;
     variable.final2 = isFinal;
-    variable.synthetic = true;
+    variable.synthetic = false;
+    variable.type = type;
     PropertyAccessorElementImpl getter =
         new PropertyAccessorElementImpl.forVariable(variable);
     getter.getter = true;
     getter.synthetic = true;
     getter.variable = variable;
     getter.returnType = type;
     variable.getter = getter;
     FunctionTypeImpl getterType = new FunctionTypeImpl(getter);
     getter.type = getterType;
     if (!isConst && !isFinal) {
@@ skipping 12 matching lines @@
     }
     return variable;
   }
 
   static TypeParameterElementImpl typeParameterElement(String name) {
     TypeParameterElementImpl element = new TypeParameterElementImpl(name, 0);
     element.type = new TypeParameterTypeImpl(element);
     return element;
   }
 }