Revert revision 33053

third_party/pkg/di/lib/static_injector.dart

 library di.static_injector;
 
 import 'di.dart';
 
+typedef Object TypeFactory(factory(Type));
+
 /**
  * Static implementation of [Injector] that uses type factories
  */
 class StaticInjector extends Injector {
   Map<Type, TypeFactory> typeFactories;
 
   StaticInjector({List<Module> modules, String name,
-                 bool allowImplicitInjection: false, typeFactories})
+                 bool allowImplicitInjection: false, this.typeFactories})
       : super(modules: modules, name: name,
-          allowImplicitInjection: allowImplicitInjection) {
-    this.typeFactories = _extractTypeFactories(modules, typeFactories);
-  }
+          allowImplicitInjection: allowImplicitInjection);
 
   StaticInjector._fromParent(List<Module> modules, Injector parent, {name})
-      : super.fromParent(modules, parent, name: name) {
-    this.typeFactories = _extractTypeFactories(modules);
-  }
+      : super.fromParent(modules, parent, name: name);
 
   newFromParent(List<Module> modules, String name) {
     return new StaticInjector._fromParent(modules, this, name: name);
   }
 
   Object newInstanceOf(Type type, ObjectFactory getInstanceByType,
                        Injector requestor, error) {
-    TypeFactory typeFactory = _getFactory(type);
+    TypeFactory typeFactory = (root as StaticInjector).typeFactories[type];
     if (typeFactory == null) {
       throw new NoProviderError(error('No type factory provided for $type!'));
     }
     return typeFactory((type) => getInstanceByType(type, requestor));
   }
-
-  TypeFactory _getFactory(Type type) {
-    var cursor = this;
-    while (cursor != null) {
-      if (cursor.typeFactories.containsKey(type)) {
-        return cursor.typeFactories[type];
-      }
-      cursor = cursor.parent;
-    }
-    return null;
-  }
-}
-
-Map<Type, TypeFactory> _extractTypeFactories(List<Module> modules,
-    [Map<Type, TypeFactory> initial = const {}]) {
-  if (modules == null || modules.isEmpty) return initial;
-  var tmp = new Map.from(initial == null ? {} : initial);
-  modules.forEach((module) {
-    module.typeFactories.forEach((type, factory) {
-      tmp[type] = factory;
-    });
-  });
-  return tmp;
-}
+}