public override bool IsSubsetOf(IPermission target)
{
if (target == null)
{
// do not use Cast - different permissions (and earlier Fx) return false :-/
return(true);
}
ResourcePermissionBase rpb = (target as ResourcePermissionBase);
if (rpb == null)
{
return(false);
}
if (rpb.IsUnrestricted())
{
return(true);
}
if (IsUnrestricted())
{
return(rpb.IsUnrestricted());
}
foreach (ResourcePermissionBaseEntry entry in _list)
{
if (!rpb.Exists(entry))
{
return(false);
}
}
return(true);
}
public override IPermission Union(IPermission target)
{
if (target == null)
{
return(this.Copy());
}
if (target.GetType() != base.GetType())
{
throw new ArgumentException(SR.GetString("PermissionTypeMismatch"), "target");
}
ResourcePermissionBase base2 = (ResourcePermissionBase)target;
ResourcePermissionBase base3 = null;
if (this.IsUnrestricted() || base2.IsUnrestricted())
{
base3 = this.CreateInstance();
base3.isUnrestricted = true;
return(base3);
}
Hashtable hashtable = (Hashtable)this.UnionOfContents(this.rootTable, base2.rootTable);
if (hashtable != null)
{
base3 = this.CreateInstance();
base3.rootTable = hashtable;
}
return(base3);
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
public override IPermission Union(IPermission target)
{
if (target == null)
{
return(this.Copy());
}
if (target.GetType() != this.GetType())
{
throw new ArgumentException(SR.GetString(SR.PermissionTypeMismatch), "target");
}
ResourcePermissionBase targetPermission = (ResourcePermissionBase)target;
ResourcePermissionBase newPermission = null;
if (this.IsUnrestricted() || targetPermission.IsUnrestricted())
{
newPermission = CreateInstance();
newPermission.isUnrestricted = true;
}
else
{
Hashtable newPermissionRootTable = (Hashtable)UnionOfContents(this.rootTable, targetPermission.rootTable);
if (newPermissionRootTable != null)
{
newPermission = CreateInstance();
newPermission.rootTable = newPermissionRootTable;
}
}
return(newPermission);
}
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
public override bool IsSubsetOf(IPermission target)
{
if (target == null)
{
return(IsEmpty);
}
if (target.GetType() != this.GetType())
{
return(false);
}
ResourcePermissionBase targetPermission = (ResourcePermissionBase)target;
if (targetPermission.IsUnrestricted())
{
return(true);
}
else if (this.IsUnrestricted())
{
return(false);
}
return(IsContentSubset(this.rootTable, targetPermission.rootTable));
}
/// <include file='doc\ResourcePermissionBase.uex' path='docs/doc[@for="ResourcePermissionBase.Intersect"]/*' />
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
public override IPermission Intersect(IPermission target)
{
if (target == null)
{
return(null);
}
if (target.GetType() != this.GetType())
{
throw new ArgumentException("target");
}
ResourcePermissionBase targetPermission = (ResourcePermissionBase)target;
if (this.IsUnrestricted())
{
return(targetPermission.Copy());
}
if (targetPermission.IsUnrestricted())
{
return(this.Copy());
}
ResourcePermissionBase newPermission = null;
Hashtable newPermissionRootTable = (Hashtable)IntersectContents(this.rootTable, targetPermission.rootTable);
if (newPermissionRootTable != null)
{
newPermission = CreateInstance();
newPermission.rootTable = newPermissionRootTable;
}
return(newPermission);
}
public override IPermission Union(IPermission target)
{
ResourcePermissionBase rpb = Cast(target);
if (rpb == null)
{
return(Copy());
}
if (IsEmpty() && rpb.IsEmpty())
{
return(null);
}
if (rpb.IsEmpty())
{
return(Copy());
}
if (IsEmpty())
{
return(rpb.Copy());
}
bool unrestricted = (IsUnrestricted() || rpb.IsUnrestricted());
ResourcePermissionBase result = CreateFromType(this.GetType(), unrestricted);
// strangely unrestricted union doesn't process the elements (while intersect does)
if (!unrestricted)
{
foreach (ResourcePermissionBaseEntry entry in _list)
{
result.AddPermissionAccess(entry);
}
foreach (ResourcePermissionBaseEntry entry in rpb._list)
{
// don't add twice
if (!result.Exists(entry))
{
result.AddPermissionAccess(entry);
}
}
}
return(result);
}
public override IPermission Intersect(IPermission target)
{
ResourcePermissionBase rpb = Cast(target);
if (rpb == null)
{
return(null);
}
bool su = this.IsUnrestricted();
bool tu = rpb.IsUnrestricted();
// if one is empty we return null (unless the other one is unrestricted)
if (IsEmpty() && !tu)
{
return(null);
}
if (rpb.IsEmpty() && !su)
{
return(null);
}
ResourcePermissionBase result = CreateFromType(this.GetType(), (su && tu));
foreach (ResourcePermissionBaseEntry entry in _list)
{
if (tu || rpb.Exists(entry))
{
result.AddPermissionAccess(entry);
}
}
foreach (ResourcePermissionBaseEntry entry in rpb._list)
{
// don't add twice
if ((su || this.Exists(entry)) && !result.Exists(entry))
{
result.AddPermissionAccess(entry);
}
}
return(result);
}