private void InstantiateInterface(ContainerService.Builder builder)
{
var implementationTypes = GetImplementationTypes(builder);
ApplySelectors(implementationTypes, builder);
if (implementationTypes.Count == 0)
{
builder.SetComment("has no implementations");
return;
}
Func<object> factory = null;
var canUseFactory = true;
foreach (var implementationType in implementationTypes)
if (implementationType.accepted)
{
var implementationService = builder.CreateNew
? builder.Context.Instantiate(implementationType.type, true, builder.Arguments)
: builder.Context.Resolve(ServiceName.Parse(implementationType.type, false));
builder.LinkTo(containerContext, implementationService, implementationType.comment);
if (builder.CreateNew && builder.Arguments == null &&
implementationService.Status == ServiceStatus.Ok && canUseFactory)
if (factory == null)
{
if (!factoryCache.TryGetValue(implementationService.Name, out factory))
canUseFactory = false;
}
else
canUseFactory = false;
if (builder.Status.IsBad())
return;
}
else
{
var dependency = ServiceDependency.NotResolved(null, implementationType.type.FormatName());
dependency.Comment = implementationType.comment;
builder.AddDependency(dependency, true);
}
builder.EndResolveDependencies();
if (factory != null && canUseFactory)
factoryCache.TryAdd(builder.GetName(), factory);
}
private void InstantiateImplementation(ContainerService.Builder builder)
{
if (builder.DontUse())
{
builder.SetComment("DontUse");
return;
}
var result = FactoryCreator.TryCreate(builder) ?? LazyCreator.TryCreate(builder);
if (result != null)
{
builder.AddInstance(result, true);
return;
}
if (NestedFactoryCreator.TryCreate(builder))
return;
if (CtorFactoryCreator.TryCreate(builder))
return;
if (builder.Type.IsDelegate())
{
builder.SetError(string.Format("can't create delegate [{0}]", builder.Type.FormatName()));
return;
}
var constructor = builder.Type.GetConstructor();
if (!constructor.isOk)
{
builder.SetError(constructor.errorMessage);
return;
}
var formalParameters = constructor.value.GetParameters();
var actualArguments = new object[formalParameters.Length];
var hasServiceNameParameters = false;
for (var i = 0; i < formalParameters.Length; i++)
{
var formalParameter = formalParameters[i];
if (formalParameter.ParameterType == typeof (ServiceName))
{
hasServiceNameParameters = true;
continue;
}
var dependency = InstantiateDependency(formalParameter, builder).CastTo(formalParameter.ParameterType);
builder.AddDependency(dependency, false);
if (dependency.ContainerService != null)
builder.UnionUsedContracts(dependency.ContainerService);
if (builder.Status != ServiceStatus.Ok && !builder.Context.AnalizeDependenciesOnly)
return;
actualArguments[i] = dependency.Value;
}
foreach (var d in builder.Configuration.ImplicitDependencies)
{
var dependency = builder.Context.Resolve(d).AsSingleInstanceDependency(null);
dependency.Comment = "implicit";
builder.AddDependency(dependency, false);
if (dependency.ContainerService != null)
builder.UnionUsedContracts(dependency.ContainerService);
if (builder.Status != ServiceStatus.Ok)
return;
}
builder.EndResolveDependencies();
if (builder.Context.AnalizeDependenciesOnly)
return;
var dependenciesResolvedByArguments = builder.Arguments == null
? InternalHelpers.emptyStrings
: builder.Arguments.GetUsed().Select(InternalHelpers.ByNameDependencyKey);
var unusedConfigurationKeys = builder.Configuration.GetUnusedDependencyConfigurationKeys()
.Except(dependenciesResolvedByArguments)
.ToArray();
if (unusedConfigurationKeys.Length > 0)
{
builder.SetError(string.Format("unused dependency configurations [{0}]", unusedConfigurationKeys.JoinStrings(",")));
return;
}
if (hasServiceNameParameters)
for (var i = 0; i < formalParameters.Length; i++)
if (formalParameters[i].ParameterType == typeof (ServiceName))
actualArguments[i] = builder.GetName();
if (builder.CreateNew || builder.DeclaredContracts.Length == builder.FinalUsedContracts.Length)
{
builder.CreateInstance(constructor.value, null, actualArguments);
if (builder.CreateNew && builder.Arguments == null)
{
var compiledConstructor = constructor.value.Compile();
factoryCache.TryAdd(builder.GetName(), () =>
{
var instance = compiledConstructor(null, actualArguments);
var component = instance as IInitializable;
if (component != null)
component.Initialize();
return instance;
});
}
return;
}
var serviceForUsedContractsId = instanceCache.GetOrAdd(builder.GetName(), createId);
ContainerService serviceForUsedContracts;
if (serviceForUsedContractsId.AcquireInstantiateLock(out serviceForUsedContracts))
{
builder.CreateInstance(constructor.value, null, actualArguments);
serviceForUsedContracts = builder.Build();
serviceForUsedContractsId.ReleaseInstantiateLock(builder.Context.AnalizeDependenciesOnly
? null
: serviceForUsedContracts);
}
else
builder.Reuse(serviceForUsedContracts);
}