private BuildStep findStep(Type type)
{
// INSTEAD, let's pull all variable sources
// If not a ServiceVariable, use the KnownVariableBuildStep, otherwise use the
// parent build step and do NOT visit its dependencies
var variable = _method.TryFindVariable(type, VariableSource.NotServices);
if (variable != null)
{
return(new KnownVariableBuildStep(variable));
}
var @default = _graph.FindDefault(type);
if (@default?.ImplementationType != null)
{
var ctor = _graph.ChooseConstructor(@default.ImplementationType);
if (ctor != null)
{
return(new ConstructorBuildStep(type, @default.ImplementationType, @default.Lifetime, ctor));
}
}
// TODO -- split on T[], IList<T>, IEnumerable<T>, IReadOnlyList<T>
return(null);
}
private BuildStep findStep(ServiceDescriptor descriptor)
{
if (descriptor?.ImplementationType != null)
{
var ctor = _graph.ChooseConstructor(descriptor.ImplementationType);
if (ctor != null)
{
return(new ConstructorBuildStep(descriptor, ctor));
}
}
return(null);
}
private BuildStep findStep(Type type)
{
var variable = _method.TryFindVariable(type, VariableSource.All);
if (variable != null)
{
return(new KnownVariableBuildStep(variable));
}
var @default = _graph.FindDefault(type);
if (@default?.ImplementationType != null)
{
var ctor = _graph.ChooseConstructor(@default.ImplementationType);
if (ctor != null)
{
return(new ConstructorBuildStep(type, @default.ImplementationType, @default.Lifetime, ctor));
}
}
// split on T[], IList<T>, IEnumerable<T>, IReadOnlyList<T>
return(null);
}
public BuildStepPlanner(Type serviceType, Type concreteType, ServiceGraph graph, IMethodVariables method)
{
if (!concreteType.IsConcrete())
{
throw new ArgumentOutOfRangeException(nameof(concreteType), "Must be a concrete type");
}
ConcreteType = concreteType;
_graph = graph;
_method = method;
var ctor = graph.ChooseConstructor(concreteType);
if (ctor == null)
{
CanBeReduced = false;
}
else
{
Top = new ConstructorBuildStep(serviceType, concreteType, ServiceLifetime.Scoped, ctor);
Visit(Top);
}
}