public static bool TryCreate(ContainerService.Builder builder)
{
var factoryType = builder.Type.GetNestedType("Factory");
if (factoryType == null)
return false;
var method = factoryType.GetMethod("Create", Type.EmptyTypes);
if (method == null)
return false;
var factory = builder.Context.Container.Resolve(method.DeclaringType, InternalHelpers.emptyStrings, false);
if (factory.IsOk())
builder.CreateInstanceBy(CallTarget.M(method, factory.Single(), new object[0]), true);
return true;
}
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, false);
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 = ResolveCore(ServiceName.Parse(d.Type, d.Contracts), false, null, builder.Context)
.AsDependency(containerContext, null, false);
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 ? null : builder.Arguments.GetUsed();
List<string> unusedConfigurationKeys = null;
foreach (var k in builder.Configuration.GetUnusedDependencyKeys())
{
var resolvedByArguments = dependenciesResolvedByArguments != null &&
k.name != null &&
dependenciesResolvedByArguments.Contains(k.name);
if (resolvedByArguments)
continue;
if (unusedConfigurationKeys == null)
unusedConfigurationKeys = new List<string>();
unusedConfigurationKeys.Add(k.ToString());
}
if (unusedConfigurationKeys != null)
{
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.GetFinalName();
if (builder.CreateNew || builder.DeclaredContracts.Length == builder.FinalUsedContracts.Length)
{
builder.CreateInstanceBy(CallTarget.M(constructor.value, null, actualArguments), true);
if (builder.CreateNew && builder.Arguments == null)
{
var compiledConstructor = constructor.value.Compile();
factoryCache.TryAdd(builder.GetFinalName(), () =>
{
var instance = compiledConstructor(null, actualArguments);
var component = instance as IInitializable;
if (component != null)
component.Initialize();
return instance;
});
}
return;
}
var serviceForUsedContractsId = instanceCache.GetOrAdd(builder.GetFinalName(), createId);
var acquireResult = serviceForUsedContractsId.AcquireInstantiateLock();
if (acquireResult.acquired)
{
builder.CreateInstanceBy(CallTarget.M(constructor.value, null, actualArguments), true);
serviceForUsedContractsId.ReleaseInstantiateLock(builder.Context.AnalizeDependenciesOnly
? null
: builder.GetService());
}
else
builder.Reuse(acquireResult.alreadyConstructedService);
}
internal void Instantiate(ContainerService.Builder builder)
{
LifestyleAttribute lifestyle;
if (builder.Type.IsSimpleType())
builder.SetError("can't create simple type");
else if (builder.Type == typeof (IContainer))
builder.AddInstance(this, false, false);
else if (builder.Configuration.ImplementationAssigned)
builder.AddInstance(builder.Configuration.Implementation, builder.Configuration.ContainerOwnsInstance, true);
else if (builder.Configuration.Factory != null)
{
if (!builder.Context.AnalizeDependenciesOnly)
builder.CreateInstanceBy(CallTarget.F(builder.Configuration.Factory), builder.Configuration.ContainerOwnsInstance);
}
else if (builder.Type.IsValueType)
builder.SetError("can't create value type");
else if (builder.Type.IsGenericType && builder.Type.ContainsGenericParameters)
builder.SetError("can't create open generic");
else if (!builder.CreateNew && builder.Type.TryGetCustomAttribute(out lifestyle) &&
lifestyle.Lifestyle == Lifestyle.PerRequest)
{
const string messageFormat = "service [{0}] with PerRequest lifestyle can't be resolved, use Func<{0}> instead";
builder.SetError(string.Format(messageFormat, builder.Type.FormatName()));
}
else if (builder.Type.IsAbstract)
InstantiateInterface(builder);
else
InstantiateImplementation(builder);
}
internal void Instantiate(ContainerService.Builder builder)
{
LifestyleAttribute lifestyle;
if (builder.Type.IsSimpleType())
builder.SetError("can't create simple type");
else if (builder.Type == typeof (IContainer))
builder.AddInstance(this, false);
else if (builder.Configuration.ImplementationAssigned)
builder.AddInstance(builder.Configuration.Implementation, builder.Configuration.ContainerOwnsInstance);
else if (builder.Configuration.Factory != null)
builder.CreateInstanceBy(() => builder.Configuration.Factory(this), builder.Configuration.ContainerOwnsInstance);
else if (builder.Configuration.FactoryWithTarget != null)
{
if (!builder.Context.AnalizeDependenciesOnly)
{
var previousService = builder.Context.GetPreviousBuilder();
var target = previousService == null ? null : previousService.Type;
builder.CreateInstanceBy(() => builder.Configuration.FactoryWithTarget(this, target),
builder.Configuration.ContainerOwnsInstance);
}
}
else if (builder.Type.IsValueType)
builder.SetError("can't create value type");
else if (builder.Type.IsGenericType && builder.Type.ContainsGenericParameters)
builder.SetError("can't create open generic");
else if (!builder.CreateNew && builder.Type.TryGetCustomAttribute(out lifestyle) &&
lifestyle.Lifestyle == Lifestyle.PerRequest)
{
const string messageFormat = "service [{0}] with PerRequest lifestyle can't be resolved, use Func<{0}> instead";
builder.SetError(string.Format(messageFormat, builder.Type.FormatName()));
}
else if (builder.Type.IsAbstract)
InstantiateInterface(builder);
else
InstantiateImplementation(builder);
if (builder.Configuration.InstanceFilter != null)
{
var filteredOutCount = builder.FilterInstances(builder.Configuration.InstanceFilter);
if (filteredOutCount > 0)
builder.SetComment("instance filter");
}
}