/// <summary>
/// 返回依赖注入服务的实现类型
/// </summary>
/// <returns></returns>
public Type GetImplementationType()
{
if (ImplementationType != null)
{
return(ImplementationType);
}
else if (ImplementationInstance != null)
{
return(ImplementationInstance.GetType());
}
else if (ImplementationDelegate != null)
{
return(GetDelegateReturnType());
}
throw new InvalidOperationException(string.Format("无法获取{0}的实现类型。", ServiceType.FullName));
}
public Type GetImplementType()
{
if (ImplementationInstance != null)
{
return(ImplementationInstance.GetType());
}
if (ImplementationFactory != null)
{
return(ImplementationFactory.Method.DeclaringType);
}
if (ImplementType != null)
{
return(ImplementType);
}
return(ServiceType);
}
internal Type GetImplementationType()
{
if (ImplementationType != null)
{
return(ImplementationType);
}
if (ImplementationInstance != null)
{
return(ImplementationInstance.GetType());
}
if (ImplementationFactory != null)
{
Type[] typeArgs = ImplementationFactory.GetType().GenericTypeArguments;
if (typeArgs.Length == 2)
{
return(typeArgs[1]);
}
}
throw new ArgumentException(Resources.Ioc_ImplementationTypeNotFound.FormatWith(ServiceType));
}
/// <summary>
/// 获取实例类型
/// </summary>
/// <returns></returns>
internal Type GetImplementationType()
{
if (ImplementationType != null)
{
return(ImplementationType);
}
if (ImplementationInstance != null)
{
return(ImplementationInstance.GetType());
}
if (ImplementationFactory != null)
{
Type[] typeArgs = ImplementationFactory.GetType().GenericTypeArguments;
if (typeArgs.Length == 2)
{
return(typeArgs[1]);
}
}
throw new ArgumentException("类型\"{0}\" 的实现类型无法找到".FormatWith(ServiceType));
}
internal Type GetImplementationType()
{
if (ImplementationType != null)
{
return(ImplementationType);
}
else if (ImplementationInstance != null)
{
return(ImplementationInstance.GetType());
}
else if (ImplementationFactory != null)
{
var typeArguments = ImplementationFactory.GetType().GenericTypeArguments;
Debug.Assert(typeArguments.Length == 2);
return(typeArguments[1]);
}
throw new ArgumentException(Resources.FormatNoImplementation(ServiceType));
}
internal Type GetImplementationType()
{
if (ImplementationType != null)
{
return(ImplementationType);
}
else if (ImplementationInstance != null)
{
return(ImplementationInstance.GetType());
}
else if (ImplementationFactory != null)
{
Type[]? typeArguments = ImplementationFactory.GetType().GenericTypeArguments;
Debug.Assert(typeArguments.Length == 2);
return(typeArguments[1]);
}
Debug.Assert(false, "ImplementationType, ImplementationInstance or ImplementationFactory must be non null");
return(null);
}
internal System.Type GetImplementationType()
{
if (ImplementationType != null)
{
return(ImplementationType);
}
else if (ImplementationInstance != null)
{
return(ImplementationInstance.GetType());
}
else if (ImplementationFactory != null)
{
var typeArguments = ImplementationFactory.GetType().GenericTypeArguments;
System.Diagnostics.Debug.Assert(typeArguments.Length == 2);
return(typeArguments[1]);
}
System.Diagnostics.Debug.Assert(false, "ImplementationType, ImplementationInstance or ImplementationFactory must be non null");
return(null);
}
/// <summary>
/// 获得<see cref="ImplementationType"/>、<see cref="ImplementationInstance"/>、<see cref="ImplementationFactory"/>
/// 的<see cref="Type"/>类型。
/// </summary>
/// <returns></returns>
internal Type GetImplementationType()
{
if (ImplementationType != null)
{
return(ImplementationType);
}
if (ImplementationInstance != null)
{
return(ImplementationInstance.GetType());
}
if (ImplementationFactory != null)
{
var Typearguments = ImplementationFactory.GetType().GenericTypeArguments;
if (Typearguments.Length != 2)
{
throw new Exception("ImplementationFactory只能提供两个泛型");
}
return(Typearguments[1]);
}
return(null);
}
private void Validate()
{
// ServiceType must be specified.
if (ServiceType == null)
{
throw new IoCException("No service type was specified.");
}
// Implementation type or implementation expression or implementation
// instance must be specified, but no more than one of the above.
var count = new object[]
{ ImplementationType, ImplementationFactory, ImplementationInstance }
.Count(x => x != null);
if (count == 0)
{
throw new IoCException
($"No implementation was specified for type {ServiceType.FullName}.");
}
// Implementation type and implementation expression can not both be specified
if (count > 1)
{
throw new IoCException
("More than one implementation was specified for type " +
ServiceType.FullName);
}
var actualImplementationType = ImplementationType;
if (ImplementationFactory != null)
{
if (ImplementationFactory.Body is UnaryExpression uex)
{
if (uex.NodeType == ExpressionType.Convert)
{
actualImplementationType = uex.Operand.Type;
}
}
actualImplementationType = actualImplementationType ??
ImplementationFactory.Body.Type;
}
if (ImplementationInstance != null)
{
actualImplementationType = ImplementationInstance.GetType();
}
// Implementation must not be a value type.
if (actualImplementationType.IsValueType)
{
throw new IoCException
($"Type {ServiceType.FullName} has been specified to be " +
$"implemented by type {actualImplementationType.FullName}, " +
$"which is a value type. Value types are not supported as " +
$"registered services.");
}
// Implementations by type must be concrete classes.
if (ImplementationType != null && ImplementationType.IsAbstract)
{
throw new IoCException
($"Type {ServiceType.FullName} has been specified to be " +
$"implemented by type {ImplementationType.FullName}, " +
$"which is an interface or an abstract base class. " +
$"Services implemented by type must be concrete classes.");
}
if (ServiceType.IsGenericTypeDefinition)
{
ValidateOpenGeneric();
}
else
{
ValidateClosedType(actualImplementationType);
}
}
