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TypeExtensions.cs
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78 lines (67 loc) · 2.6 KB
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace SharpQuant.Common
{
public static class TypeExtensions
{
public static bool IsSubclassOfRawGeneric(this Type toCheck, Type generic)
{
while (toCheck != null && toCheck != typeof(object))
{
var cur = toCheck.IsGenericType ? toCheck.GetGenericTypeDefinition() : toCheck;
if (generic == cur)
{
return true;
}
toCheck = toCheck.BaseType;
}
return false;
}
public static bool InheritsOrImplements(this Type child, Type parent)
{
parent = ResolveGenericTypeDefinition(parent);
var currentChild = child.IsGenericType
? child.GetGenericTypeDefinition()
: child;
while (currentChild != typeof(object))
{
if (parent == currentChild || HasAnyInterfaces(currentChild, parent))
return true;
currentChild = currentChild.BaseType != null
&& currentChild.BaseType.IsGenericType
? currentChild.BaseType.GetGenericTypeDefinition()
: currentChild.BaseType;
if (currentChild == null)
return false;
}
return false;
}
public static bool HasAnyInterfaces(this Type child, Type parent)
{
return child.GetInterfaces()
.Any(childInterface =>
{
var currentInterface = childInterface.IsGenericType
? childInterface.GetGenericTypeDefinition()
: childInterface;
return currentInterface == parent;
});
}
private static Type ResolveGenericTypeDefinition(Type parent)
{
var shouldUseGenericType = true;
if (parent.IsGenericType && parent.GetGenericTypeDefinition() != parent)
shouldUseGenericType = false;
if (parent.IsGenericType && shouldUseGenericType)
parent = parent.GetGenericTypeDefinition();
return parent;
}
public static string GetShortQualifiedName(this Type t)
{
//Classname, Assembly, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null
return string.Join(",", t.AssemblyQualifiedName.Split(',').Take(2));
}
}
}