public object TryGetInstance(Type serviceType, string name)
{
assertNotDisposed();
var instance = ServiceGraph.FindInstance(serviceType, name);
return(instance?.Resolve(this));
}
public object QuickBuild(Type objectType)
{
assertNotDisposed();
if (!objectType.IsConcrete())
{
throw new InvalidOperationException("Type must be concrete");
}
var ctor = new ConstructorInstance(objectType, objectType, ServiceLifetime.Transient).DetermineConstructor(ServiceGraph, out var message);
if (ctor == null)
{
throw new InvalidOperationException(message);
}
var dependencies = ctor.GetParameters().Select(x =>
{
var instance = ServiceGraph.FindInstance(x);
return(instance.QuickResolve(this));
}).ToArray();
return(ctor.Invoke(dependencies));
}
protected override IEnumerable<Instance> createPlan(ServiceGraph services)
{
_inner = services.FindInstance(ServiceType, _instanceKey);
if (_inner == null) throw new InvalidOperationException($"Referenced instance of {ServiceType.FullNameInCode()} named '{_instanceKey}' does not exist");
_inner.Parent = Parent;
Lifetime = _inner.Lifetime;
yield return _inner;
}
public object GetInstance(Type serviceType, string name)
{
assertNotDisposed();
var instance = ServiceGraph.FindInstance(serviceType, name);
if (instance == null)
{
throw new LamarMissingRegistrationException(serviceType, name);
}
return(instance.Resolve(this));
}
public object QuickBuild(Type objectType)
{
assertNotDisposed();
if (!objectType.IsConcrete())
{
throw new InvalidOperationException("Type must be concrete");
}
var constructorInstance = new ConstructorInstance(objectType, objectType, ServiceLifetime.Transient);
var ctor = constructorInstance.DetermineConstructor(ServiceGraph, out var message);
var setters = constructorInstance.FindSetters(ServiceGraph);
if (ctor == null)
{
throw new InvalidOperationException(message);
}
var dependencies = ctor.GetParameters().Select(x =>
{
var instance = ServiceGraph.FindInstance(x);
if (instance == null)
{
throw new InvalidOperationException($"Cannot QuickBuild type {objectType.GetFullName()} because Lamar cannot determine how to build required dependency {x.ParameterType.FullNameInCode()}");
}
try
{
return(instance.QuickResolve(this));
}
catch (Exception)
{
// #sadtrombone, do it the heavy way instead
return(instance.Resolve(this));
}
}).ToArray();
var service = ctor.Invoke(dependencies);
foreach (var setter in setters)
{
setter.ApplyQuickBuildProperties(service, this);
}
return(service);
}
