Parameters to methods in classes should be able to take [VALIDATExxx] attributes. #2485
Description
Should be able to add validate attributes to params like:
class NetHelper
{
static [String]ConvertToSubnetMask(
[ValidateRange(0, 32)]
[UInt32]$PrefixLength
)
{
$byteMask = ([Convert]::ToUInt32($(("1" \* $PrefixLength).PadRight(32, "0")), 2))
$bytes = [BitConverter]::GetBytes($byteMask)
[Array]::Reverse($bytes)
$ipAddress = New-Object System.Net.IPAddress -ArgumentList (, $bytes)
return $ipAddress.IPAddressToString
}
}Just to be clear - I understand that we are creating a proper .net class and using real .Net call conventions.
What I'm suggesting is that underneath the covers, we implement something along the lines of:
class NetHelper
{
static [String]ConvertToSubnetMask(
[UInt32]$PrefixLength
)
{
[ValidateRange(0, 32)]$LocalPrefixLength = $PrefixLength
$byteMask = ([Convert]::ToUInt32($(("1" \* $LocalPrefixLength).PadRight(32, "0")), 2))
$bytes = [BitConverter]::GetBytes($byteMask)
[Array]::Reverse($bytes)
$ipAddress = New-Object System.Net.IPAddress -ArgumentList (, $bytes)
return $ipAddress.IPAddressToString
}
}Error message example:
The attribute cannot be added because variable LocalPrefixLength with value 35 would no longer be valid.
At line:8 char:8
- [ValidateRange(0, 32)]$LocalPrefixLength = $PrefixLength
- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- CategoryInfo : MetadataError: (:) [], ValidationMetadataException
- FullyQualifiedErrorId : ValidateSetFailure (edited)
> $PSVersionTable
Name Value
---- -----
PSVersion 5.1.14393.206
PSEdition Desktop
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0...}
BuildVersion 10.0.14393.206
CLRVersion 4.0.30319.42000
WSManStackVersion 3.0
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1