Basic support for initializers has been added.

Source/JSObjectionInjectorEntry.m

@@ -4,7 +4,9 @@
 
 @interface JSObjectionInjectorEntry()
 - (void)notifyObjectThatItIsReady: (id)object;
-- (id)buildObject;
+- (id)buildObject:(NSArray *)arguments;
+- (id)argumentsForObject:(NSArray *)givenArguments;
+- (SEL)initializerForObject;
 @end
 
 
@@ -28,7 +30,7 @@ - (id)initWithClass:(Class)theClass lifeCycle:(JSObjectionInstantiationRule)theL
 
 - (id)extractObject:(NSArray *)arguments {
   if (self.lifeCycle == JSObjectionInstantiationRuleNormal || !_storageCache) {
-  	return [self buildObject];  
+      return [self buildObject:arguments];  
   }
 
   return _storageCache;
@@ -50,8 +52,14 @@ - (void)notifyObjectThatItIsReady:(id)object {
   }
 }
 
-- (id)buildObject {
-    id objectUnderConstruction = [[[self.classEntry alloc] init] autorelease];
+- (id)buildObject:(NSArray *)arguments {
+
+    id objectUnderConstruction = nil;    
+    if ([self.classEntry respondsToSelector:@selector(objectionInitializer)]) {
+        objectUnderConstruction = JSObjectionUtils.buildObjectWithInitializer(self.classEntry, [self initializerForObject], [self argumentsForObject:arguments]);
+    } else {
+        objectUnderConstruction = [[[self.classEntry alloc] init] autorelease];
+    }
 
     if (self.lifeCycle == JSObjectionInstantiationRuleSingleton) {
         _storageCache = [objectUnderConstruction retain];
@@ -93,6 +101,14 @@ - (id)buildObject {
     return objectUnderConstruction;
 }
 
+- (SEL)initializerForObject {
+    return NSSelectorFromString([[self.classEntry performSelector:@selector(objectionInitializer)] objectForKey:JSObjectionInitializerKey]);
+}
+
+- (NSArray *)argumentsForObject:(NSArray *)givenArguments {
+    return givenArguments.count > 0 ? givenArguments : [[self.classEntry performSelector:@selector(objectionInitializer)] objectForKey:JSObjectionDefaultArgumentsKey];
+}
+
 #pragma mark Class Methods
 #pragma mark -
 

Source/JSObjectionUtils.h

@@ -20,4 +20,5 @@ extern const struct JSObjectionUtils {
     NSSet* (*buildDependenciesForClass)(Class klass, NSSet *requirements);
     NSDictionary* (*buildInitializer)(SEL selector, NSArray *arguments);
     NSArray* (*transformVariadicArgsToArray)(va_list va_arguments);
+    id (*buildObjectWithInitializer)(Class klass, SEL initializer, NSArray *arguments);
 } JSObjectionUtils;

Source/JSObjectionUtils.m

@@ -81,10 +81,27 @@ static objc_property_t GetProperty(Class klass, NSString *propertyName) {
     return property;
 }
 
+
+static id BuildObjectWithInitializer(Class klass, SEL initializer, NSArray *arguments) {
+    id instance = [klass alloc];
+    NSMethodSignature *signature = [klass instanceMethodSignatureForSelector:initializer];
+    NSInvocation *invocation = [NSInvocation invocationWithMethodSignature:signature];
+    [invocation setTarget:instance];
+    [invocation setSelector:initializer];
+    for (int i = 0; i < arguments.count; i++) {
+        id argument = [arguments objectAtIndex:i];
+        [invocation setArgument:&argument atIndex:i + 2];
+    }
+    [invocation invoke];
+    [invocation getReturnValue:&instance];
+    return [instance autorelease];
+}
+
 const struct JSObjectionUtils JSObjectionUtils = {
     .findClassOrProtocolForProperty = FindClassOrProtocolForProperty,
     .propertyForClass = GetProperty,
     .buildDependenciesForClass = BuildDependenciesForClass,
     .buildInitializer = BuildInitializer,
-    .transformVariadicArgsToArray = TransformVariadicArgsToArray
+    .transformVariadicArgsToArray = TransformVariadicArgsToArray,
+    .buildObjectWithInitializer = BuildObjectWithInitializer
 };

Specs/InitializerSpecs.m

@@ -19,7 +19,7 @@
 it(@"will override the default arguments if arguments are passed to the injector", ^{
     ViewController *controller = [injector getObjectWithArgs:[ViewController class], @"AnotherNib", @"pretendBundle", nil];
 
-    [[controller.nibName should] equal:@"MyNib"];
+    [[controller.nibName should] equal:@"AnotherNib"];
     [[controller.bundle should] equal:@"pretendBundle"];
     [[controller.car should] beMemberOfClass:[Car class]];    
 });