private static ConstructorInfo GetConstructor(ConstructorKey key)
{
ConstructorInfo result = null;
//遍历整个继承树，根据参数数量和类型找到方法
const BindingFlags oneLevelFlags =
BindingFlags.DeclaredOnly |
BindingFlags.Instance |
BindingFlags.Public |
BindingFlags.NonPublic |
BindingFlags.IgnoreCase;
Type currentType = key.ObjectType;
do
{
ConstructorInfo[] infos = currentType.GetConstructors(oneLevelFlags);
foreach (ConstructorInfo info in infos)
{
if (ValidateGenericArguments(info, key.GenericTypes) &&
ValidateParameters(info, key.Parameters))
{
result = info;
break;
}
}
if (result != null)
{
break;
}
currentType = currentType.BaseType;
} while (currentType != null);
return(result);
}
private static ConstructorInfo GetConstructor(Type type, Type[] genericTypes, MethodParameter[] prms, bool isGenericVersion)
{
genericTypes = genericTypes ?? Type.EmptyTypes;
prms = prms ?? MethodParameter.EmptyParameters;
ConstructorKey key = new ConstructorKey(type, genericTypes, prms, isGenericVersion);
return(_getConstructor(key));
}