Stack overflow

angel_container/lib/src/container.dart

@@ -16,13 +16,17 @@ class Container {
       var named = <String, dynamic>{};
 
       if (reflectedType is ReflectedClass) {
+        bool isDefault(String name) {
+          return name.isEmpty || name == reflectedType.name;
+        }
+
         var constructor = reflectedType.constructors.firstWhere(
-            (c) => c.name.isEmpty,
-            orElse: () => throw new ReflectionException('${reflectedType
-                .name} has no default constructor, and therefore cannot be instantiated.'));
+            (c) => isDefault(c.name),
+            orElse: () => throw new ReflectionException(
+                '${reflectedType.name} has no default constructor, and therefore cannot be instantiated.'));
 
         for (var param in constructor.parameters) {
-          var value = make(param.type);
+          var value = make(param.type.reflectedType);
 
           if (param.isNamed) {
             named[param.name] = value;
@@ -31,8 +35,10 @@ class Container {
           }
         }
 
-        return reflectedType
-            .newInstance(constructor.name, positional, named, []);
+        return reflectedType.newInstance(
+            isDefault(constructor.name) ? '' : constructor.name,
+            positional,
+            named, []);
       } else {
         throw new ReflectionException(
             '$type is not a class, and therefore cannot be instantiated.');
@@ -42,8 +48,8 @@ class Container {
 
   void singleton(Object object, {Type as}) {
     if (_singletons.containsKey(as ?? object.runtimeType)) {
-      throw new StateError('This container already has a singleton for ${as ??
-          object.runtimeType}.');
+      throw new StateError(
+          'This container already has a singleton for ${as ?? object.runtimeType}.');
     }
 
     _singletons[as ?? object.runtimeType] = object;

angel_container/lib/src/mirrors/reflector.dart

@@ -1,9 +1,14 @@
 import 'dart:mirrors' as dart;
+
 import 'package:angel_container/angel_container.dart';
 import 'package:angel_container/src/reflector.dart';
-import 'package:angel_container/src/reflector.dart';
 
+/// A [Reflector] implementation that forwards to `dart:mirrors`.
+///
+/// Useful on the server, where reflection is supported.
 class MirrorsReflector implements Reflector {
+  const MirrorsReflector();
+
   @override
   String getName(Symbol symbol) => dart.MirrorSystem.getName(symbol);
 
@@ -20,7 +25,8 @@ class MirrorsReflector implements Reflector {
 
   @override
   ReflectedFunction reflectFunction(Function function) {
-    // TODO: implement reflectFunction
+    var closure = dart.reflect(function) as dart.ClosureMirror;
+    return new _ReflectedMethodMirror(closure.function);
   }
 
   @override
@@ -33,6 +39,11 @@ class MirrorsReflector implements Reflector {
       return new _ReflectedTypeMirror(mirror);
     }
   }
+
+  @override
+  ReflectedInstance reflectInstance(Object object) {
+    return new _ReflectedInstanceMirror(object);
+  }
 }
 
 class _ReflectedTypeParameter extends ReflectedTypeParameter {
@@ -52,6 +63,7 @@ class _ReflectedTypeMirror extends ReflectedType {
           mirror.typeVariables
               .map((m) => new _ReflectedTypeParameter(m))
               .toList(),
+          mirror.reflectedType,
         );
 
   @override
@@ -61,7 +73,7 @@ class _ReflectedTypeMirror extends ReflectedType {
 
   @override
   T newInstance<T>(String constructorName, List positionalArguments,
-      Map<String, dynamic> namedArguments, List<Type> typeArguments) {
+      [Map<String, dynamic> namedArguments, List<Type> typeArguments]) {
     throw new ReflectionException(
         '$name is not a class, and therefore cannot be instantiated.');
   }
@@ -79,6 +91,7 @@ class _ReflectedClassMirror extends ReflectedClass {
           mirror.metadata.map((m) => new _ReflectedInstanceMirror(m)).toList(),
           _constructorsOf(mirror),
           _declarationsOf(mirror),
+          mirror.reflectedType,
         );
 
   static List<ReflectedFunction> _constructorsOf(dart.ClassMirror mirror) {
@@ -86,6 +99,10 @@ class _ReflectedClassMirror extends ReflectedClass {
 
     for (var key in mirror.declarations.keys) {
       var value = mirror.declarations[key];
+
+      if (value is dart.MethodMirror && value.isConstructor) {
+        out.add(new _ReflectedMethodMirror(value));
+      }
     }
 
     return out;
@@ -96,6 +113,11 @@ class _ReflectedClassMirror extends ReflectedClass {
 
     for (var key in mirror.declarations.keys) {
       var value = mirror.declarations[key];
+
+      if (value is dart.MethodMirror && !value.isConstructor) {
+        out.add(new ReflectedDeclaration(dart.MirrorSystem.getName(key),
+            value.isStatic, new _ReflectedMethodMirror(value)));
+      }
     }
 
     return out;
@@ -108,8 +130,10 @@ class _ReflectedClassMirror extends ReflectedClass {
 
   @override
   T newInstance<T>(String constructorName, List positionalArguments,
-      Map<String, dynamic> namedArguments, List<Type> typeArguments) {
-    // TODO: implement newInstance
+      [Map<String, dynamic> namedArguments, List<Type> typeArguments]) {
+    return mirror
+        .newInstance(new Symbol(constructorName), positionalArguments)
+        .reflectee as T;
   }
 }
 
@@ -125,3 +149,31 @@ class _ReflectedInstanceMirror extends ReflectedInstance {
     return mirror.delegate(invocation) as T;
   }
 }
+
+class _ReflectedMethodMirror extends ReflectedFunction {
+  final dart.MethodMirror mirror;
+
+  _ReflectedMethodMirror(this.mirror)
+      : super(
+            dart.MirrorSystem.getName(mirror.simpleName),
+            <ReflectedTypeParameter>[],
+            mirror.metadata
+                .map((mirror) => new _ReflectedInstanceMirror(mirror))
+                .toList(),
+            const MirrorsReflector()
+                .reflectType(mirror.returnType.reflectedType),
+            mirror.parameters.map(_reflectParameter).toList(),
+            mirror.isGetter,
+            mirror.isSetter);
+
+  static ReflectedParameter _reflectParameter(dart.ParameterMirror mirror) {
+    return new ReflectedParameter(
+        dart.MirrorSystem.getName(mirror.simpleName),
+        mirror.metadata
+            .map((mirror) => new _ReflectedInstanceMirror(mirror))
+            .toList(),
+        const MirrorsReflector().reflectType(mirror.type.reflectedType),
+        !mirror.isOptional,
+        mirror.isNamed);
+  }
+}

angel_container/lib/src/reflector.dart

@@ -1,5 +1,5 @@
 import 'package:collection/collection.dart';
-import 'package:quiver_hashcode/hashcode.dart';
+import 'package:quiver/core.dart';
 
 abstract class Reflector {
   String getName(Symbol symbol);
@@ -9,6 +9,8 @@ abstract class Reflector {
   ReflectedFunction reflectFunction(Function function);
 
   ReflectedType reflectType(Type type);
+
+  ReflectedInstance reflectInstance(Object object);
 }
 
 abstract class ReflectedInstance {
@@ -30,21 +32,23 @@ abstract class ReflectedInstance {
 abstract class ReflectedType {
   final String name;
   final List<ReflectedTypeParameter> typeParameters;
+  final Type reflectedType;
 
-  const ReflectedType(this.name, this.typeParameters);
+  const ReflectedType(this.name, this.typeParameters, this.reflectedType);
 
   @override
-  int get hashCode => hash2(name, typeParameters);
+  int get hashCode => hash3(name, typeParameters, reflectedType);
 
   @override
   bool operator ==(other) =>
       other is ReflectedType &&
       other.name == name &&
       const ListEquality<ReflectedTypeParameter>()
-          .equals(other.typeParameters, typeParameters);
+          .equals(other.typeParameters, typeParameters) &&
+      other.reflectedType == reflectedType;
 
   T newInstance<T>(String constructorName, List positionalArguments,
-      Map<String, dynamic> namedArguments, List<Type> typeArguments);
+      [Map<String, dynamic> namedArguments, List<Type> typeArguments]);
 
   bool isAssignableTo(ReflectedType other);
 }
@@ -54,9 +58,14 @@ abstract class ReflectedClass extends ReflectedType {
   final List<ReflectedFunction> constructors;
   final List<ReflectedDeclaration> declarations;
 
-  const ReflectedClass(String name, List<ReflectedTypeParameter> typeParameters,
-      this.annotations, this.constructors, this.declarations)
-      : super(name, typeParameters);
+  const ReflectedClass(
+      String name,
+      List<ReflectedTypeParameter> typeParameters,
+      this.annotations,
+      this.constructors,
+      this.declarations,
+      Type reflectedType)
+      : super(name, typeParameters, reflectedType);
 
   @override
   int get hashCode =>
@@ -96,7 +105,7 @@ class ReflectedFunction {
   final String name;
   final List<ReflectedTypeParameter> typeParameters;
   final List<ReflectedInstance> annotations;
-  final Type returnType;
+  final ReflectedType returnType;
   final List<ReflectedParameter> parameters;
   final bool isGetter, isSetter;
 
@@ -132,7 +141,7 @@ class ReflectedFunction {
 class ReflectedParameter {
   final String name;
   final List<ReflectedInstance> annotations;
-  final Type type;
+  final ReflectedType type;
   final bool isRequired;
   final bool isNamed;
 

angel_container/pubspec.yaml

@@ -1,4 +1,12 @@
 name: angel_container
+version: 1.0.0-alpha
+author: Tobe O <thosakwe@gmail.com>
+description: "A better IoC container for Angel, ultimately allowing Angel to be used without dart:mirrors."
+homepage: https://github.com/angel-dart/container.git
+environment:
+  sdk: ">=1.8.0 <3.0.0"
 dependencies:
   collection: ^1.0.0
-  quiver_hashcode: ^1.0.0
+  quiver: ^2.0.0
+dev_dependencies:
+  test:

angel_container/test/common.dart

@@ -0,0 +1,59 @@
+import 'package:angel_container/angel_container.dart';
+import 'package:test/test.dart';
+
+void testReflector(Reflector reflector) {
+  var blaziken = new Pokemon('Blaziken', PokemonType.fire);
+  Container container;
+
+  setUp(() {
+    container = new Container(reflector);
+    container.singleton(blaziken);
+  });
+
+  test('make on singleton type returns singleton', () {
+    expect(container.make(Pokemon), blaziken);
+  });
+
+  test('make on aliased singleton returns singleton', () {
+    container.singleton(blaziken, as: StateError);
+    expect(container.make(StateError), blaziken);
+  });
+
+  test('constructor injects singleton', () {
+    var lower = container.make(LowerPokemon) as LowerPokemon;
+    expect(lower.lowercaseName, blaziken.name.toLowerCase());
+  });
+
+  test('newInstance works', () {
+    var type = container.reflector.reflectType(Pokemon);
+    var instance =
+        type.newInstance('changeName', [blaziken, 'Charizard']) as Pokemon;
+    print(instance);
+    expect(instance.name, 'Charizard');
+    expect(instance.type, PokemonType.fire);
+  });
+}
+
+class LowerPokemon {
+  final Pokemon pokemon;
+
+  LowerPokemon(this.pokemon);
+
+  String get lowercaseName => pokemon.name.toLowerCase();
+}
+
+class Pokemon {
+  final String name;
+  final PokemonType type;
+
+  Pokemon(this.name, this.type);
+
+  factory Pokemon.changeName(Pokemon other, String name) {
+    return new Pokemon(name, other.type);
+  }
+
+  @override
+  String toString() => 'NAME: $name, TYPE: $type';
+}
+
+enum PokemonType { water, fire, grass, ice, poison, flying }

angel_container/test/mirrors_test.dart

@@ -0,0 +1,7 @@
+import 'package:angel_container/mirrors.dart';
+
+import 'common.dart';
+
+void main() {
+  testReflector(const MirrorsReflector());
+}