public virtual bool IsAssignableFrom(TypeInfo typeInfo)
{
if (typeInfo == null)
return false;
if (this == typeInfo)
return true;
// If c is a subclass of this class, then c can be cast to this type.
if (typeInfo.IsSubclassOf(this))
return true;
if (this.IsInterface)
{
return typeInfo.ImplementInterface(this);
}
else if (IsGenericParameter)
{
Type[] constraints = GetGenericParameterConstraints();
for (int i = 0; i < constraints.Length; i++)
if (!constraints[i].IsAssignableFrom(typeInfo))
return false;
return true;
}
return false;
}
public virtual bool IsAssignableFrom(TypeInfo typeInfo)
{
if (typeInfo == null)
{
return(false);
}
if (this == typeInfo)
{
return(true);
}
if (typeInfo.IsSubclassOf(this))
{
return(true);
}
if (base.IsInterface)
{
return(typeInfo.ImplementInterface(this));
}
if (this.IsGenericParameter)
{
Type[] genericParameterConstraints = this.GetGenericParameterConstraints();
for (int i = 0; i < genericParameterConstraints.Length; i++)
{
if (!genericParameterConstraints[i].IsAssignableFrom(typeInfo))
{
return(false);
}
}
return(true);
}
return(false);
}
public virtual bool IsAssignableFrom(TypeInfo typeInfo)
{
if ((Type)typeInfo == (Type)null)
{
return(false);
}
if ((Type)this == (Type)typeInfo || typeInfo.IsSubclassOf((Type)this))
{
return(true);
}
if (this.IsInterface)
{
return(typeInfo.ImplementInterface((Type)this));
}
if (!this.IsGenericParameter)
{
return(false);
}
foreach (Type parameterConstraint in this.GetGenericParameterConstraints())
{
if (!parameterConstraint.IsAssignableFrom((Type)typeInfo))
{
return(false);
}
}
return(true);
}
//a re-implementation of ISAF from Type, skipping the use of UnderlyingType
public virtual bool IsAssignableFrom(TypeInfo typeInfo)
{
if (typeInfo == null)
{
return(false);
}
if (this == typeInfo)
{
return(true);
}
// If c is a subclass of this class, then c can be cast to this type.
if (typeInfo.IsSubclassOf(this))
{
return(true);
}
if (this.IsInterface)
{
return(typeInfo.ImplementInterface(this));
}
else if (IsGenericParameter)
{
Type[] constraints = GetGenericParameterConstraints();
for (int i = 0; i < constraints.Length; i++)
{
if (!constraints[i].IsAssignableFrom(typeInfo))
{
return(false);
}
}
return(true);
}
return(false);
}