How to add a numeric switch to a PowerShell script - powershell

Question

I know how to add switch parameters to PowerShell scripts, but the name of the switch is always a (valid) identifier like -Enable because the name is generated from the backing PowerShell variable.
[CmdletBinding()]
param(
[switch] $Enable = $false
)
Some tools have switches like -2008. Normally, one would name the switch $2008 but this is not a valid identifier.
How can I implement such a switch as a boolean value in PowerShell?
Or in other words: How to specify a different parameter name then the backing variable?
Edit 1
I wasn't aware of number only variables (which is very strange for a programming language...). Anyhow, I created that example:
function foo
{ [CmdletBinding()]
param(
[switch] $2008
)
Write-Host "2008=$2008"
}
For this code, which is accepted as valid PowerShell, I get a auto completion as wanted. But when providing that parameter, I get this error message:
foo : Es wurde kein Positionsparameter gefunden, der das Argument "-2008" akzeptiert.
In Zeile:1 Zeichen:1
+ foo -2008
+ ~~~~~~~~~
+ CategoryInfo : InvalidArgument: (:) [foo], ParameterBindingException
+ FullyQualifiedErrorId : PositionalParameterNotFound,foo
Translation: No positional parameter was found, that accepts the argument "-2008".
The purpose of the script is to provide translations / wrappers for command line interfaces.
Here is a set of standardized executables with parameters:
vcom.exe -2008 design.vhdl
vsim.exe -2008 design
Translation:
ghdl.exe -a --std=2008 design.vhdl
ghdl.exe -e --std=2008 design
ghdl.exe -r --std=2008 design
I would like to keep the feature of auto completion for parameters, otherwise I could process all remaining parameters and translate them by hand.

Answer 1

PowerShell doesn't support numeric parameters (See this answer).
Could a validateset be an acceptable solution to your problem ?
Validate set does benefit from the autocompletion feature and this is the next best thing, in my opinion, of what you wanted.
Foo & Foos — both are the same, except Foos accept multiple parameters.
foo -std 2008
foos -std 2008,2009,2010
function foo
{ [CmdletBinding()]
param(
[ValidateSet("2008",
"2009",
"2010",
"2011","2012")][INT]$std
)
Write-Host "std:$std"
}
function foos
{ [CmdletBinding()]
param(
[ValidateSet("2008",
"2009",
"2010",
"2011","2012")][INT[]]$std
)
$std | foreach {Write-Host "std: $_"}
}
foo -std 2008
foos -std 2008,2009,2010