private NewExpression BuildNewExpression()
{
ConstructorInfo[] constructors = null;
if (typeof(IAopSupport).IsAssignableFrom(typeof(TImplementation)))
{
constructors = AspectFactory.GetProxyType(typeof(TImplementation)).GetConstructors();
}
else
{
constructors = typeof(TImplementation).GetConstructors();
}
if (constructors.Length != 1)
{
throw new InvalidOperationException(SR.GetString(SRKind.NoDefaultConstructor));
}
var constructor = constructors[0];
foreach (var par in constructor.GetParameters())
{
if (!_container.IsRegistered(par.ParameterType))
{
throw new InvalidOperationException(SR.GetString(SRKind.NotFoundRegisterForType, par.ParameterType));
}
}
var arguments =
from parameter in constructor.GetParameters()
select BuildParameterExpression(parameter.ParameterType);
return(Expression.New(constructor, arguments.ToArray()));
}
/// <summary>
/// 检查是否支持 <see cref="IAopSupport"/> 接口。
/// </summary>
/// <param name="type"></param>
/// <returns></returns>
private static Type CheckAopProxyType(Type type)
{
if (typeof(IAopSupport).IsAssignableFrom(type) && !typeof(IAopImplement).IsAssignableFrom(type))
{
return(AspectFactory.GetProxyType(type));
}
return(type);
}
private NewExpression BuildNewExpression()
{
//检查是否可构造
Helpers.CheckConstructable(typeof(TImplementation));
//获取默认的构造函数
ConstructorInfo constructor = null;
if (typeof(IAopSupport).IsAssignableFrom(typeof(TImplementation)))
{
constructor = AspectFactory.GetProxyType(typeof(TImplementation)).GetConstructors().Single();
}
else
{
constructor = typeof(TImplementation).GetConstructors().Single();
}
var arguments =
from parameter in constructor.GetParameters()
select BuildParameterExpression(parameter.ParameterType);
return(Expression.New(constructor, arguments.ToArray()));
}