// Providers are injectable classes containing a callable method that returns a new instance of the service.
// Both the class and the factory methods have different injections because they are called at distinct times.
// The class (constructor function) is called at config phase, while the method is called when the service
// needs to be instantiated. For convention, the class must me named with suffix "Provider" and the method
// must be of equal name without the suffix (e.g. "UserProvider" and "User").
public static void Provider <T>(this Module module, params string[] annotations)
{
Type type = typeof(T);
var parameters = FixAnnotation(type, annotations);
var plist = CommaSeparatedList(parameters);
string providerName = type.FullName;
if (!providerName.EndsWith("Provider"))
{
throw new Exception("provider names must end with the suffix 'Provider'");
}
string serviceName = providerName.Substring(0, providerName.Length - 8);
string[] annotations_factory_method = null;
Function factory_method = type.GetMethodAsFunction(serviceName);
if (Angular.IsUndefined(factory_method))
{
throw new Exception("provider class must contain a factory method named '" + serviceName + "'");
}
// looks for factory method, and its Inject attribute
foreach (var method in type.GetMethods(BindingFlags.Instance | BindingFlags.Public))
{
if (method.Name == serviceName)
{
object[] attrs = method.GetCustomAttributes(typeof(InjectAttribute));
if (attrs != null && attrs.Length > 0)
{
InjectAttribute attr = attrs[0] as InjectAttribute;
annotations_factory_method = attr.Injectables;
break;
}
}
}
if (annotations_factory_method == null)
{
// if [Inject] was not specified, look for inline annotations
annotations_factory_method = PatchDollarName(Angular.Injector().Annotate(factory_method));
}
// Inject annotations for the factory method
Injectable.From(factory_method).Inject = annotations_factory_method;
// creates a wrapped function around the provider class. The provider class in instantiated and the $get is filled.
string body = "var $ob = new " + type.FullName + "(" + plist + "); $ob.$get = $ob." + serviceName + "; return $ob;";
Function F = new Function(parameters, body);
Injectable.From(F).Inject = parameters;
Provider(module, serviceName, F);
}
public static void Config <T>(this Module module, params string[] annotations)
{
Type type = typeof(T);
var parameters = FixAnnotation(type, annotations);
var plist = CommaSeparatedList(parameters);
// "run" function are called without a "this" reference, so we need to instantiate the class with "new"
string body = "{ new " + type.FullName + "(" + plist + "); }";
Function F = new Function(parameters, body);
Injectable.From(F).Inject = parameters;
Config(module, F);
}