/// <summary>
///
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="scope"></param>
/// <returns></returns>
public static T Get <T>(DIScope scope = null)
{
Type type = typeof(T);
var sd = GetFactory(type);
if (sd == null)
{
throw new KeyNotFoundException($"No implementation registration found for type {type.FullName}, did you forget to register?");
}
return((T)sd.Get(scope));
}
/// <summary>
///
/// </summary>
/// <param name="scope"></param>
/// <param name="implementor"></param>
/// <returns></returns>
public static object New(DIScope scope, Type implementor)
{
scope = scope ?? Global;
var f = factories.GetOrAdd(implementor, i =>
{
ParameterExpression sp = Expression.Parameter(typeof(DIScope));
// get public constructor...
// should only be one...
var first = implementor.GetTypeInfo().DeclaredConstructors.FirstOrDefault(x => x.IsPublic);
if (first == null)
{
return(Expression.Lambda <Func <DIScope, object> >(Expression.New(implementor), sp).Compile());
}
List <Expression> args = new List <Expression>();
foreach (var p in first.GetParameters())
{
var ptype = p.ParameterType;
if (ptype == typeof(DIScope))
{
args.Add(sp);
}
else
{
var sd = GetFactory(ptype);
if (sd == null)
{
args.Add(Expression.Constant(null));
}
else
{
args.Add(Expression.Constant(sd.Get(scope)));
}
}
}
Expression call = Expression.New(first, args);
return(Expression.Lambda <Func <DIScope, object> >(call, sp).Compile());
});
return(scope.RegisterDisposable(f(scope)));
}
public Object Get(DIScope scope)
{
return(Factory(scope));
}
/// <summary>
///
/// </summary>
/// <param name="parent"></param>
/// <returns></returns>
public static DIScope NewScope(DIScope parent = null)
{
return(new CoreDI.DIScope(parent ?? Global));
}
public DIScope(DIScope parent = null)
{
this.Parent = parent;
parent?.children?.Add(this);
}