ValidateUnion.psm1
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<#PSScriptInfo .VERSION 0.2 .GUID 0a96e04b-b5ee-4752-a446-8d43e2db67dc .AUTHOR vike .COMPANYNAME pwsh.bluelephant.dyn-o-saur.com .COPYRIGHT (c) Viktor Bergquist .LICENSEURI https://opensource.org/license/mit .PROJECTURI https://github.com/vike2000/PSValidateUnion .TAGS union type validation validate arguments attribute #> <# .DESCRIPTION Module main .ps1 code file. #> class ValidateUnionException:System.Runtime.InteropServices.ExternalException { ValidateUnionException ($message) : base ($message){}} class ValidateUnionAttribute : System.Management.Automation.ValidateArgumentsAttribute {[object[] ] $Types ; ValidateUnionAttribute ` ([type] $single ) { $this. Types =@( $single ) } # n=1 ValidateUnionAttribute ` ([type] $first ` ,[type] $second ) { $this. Types =@( $first ` , $second ) } # n=2 ValidateUnionAttribute ` ([type] $first ` ,[type] $second ` ,[type] $third ) { $this. Types =@( $first ` , $second ` , $third ) } # n=3 ValidateUnionAttribute ` ([type] $first ` ,[type] $second ` ,[type] $third ` ,[type] $fourth ) { $this. Types =@( $first ` , $second ` , $third ` , $fourth ) } # n=4 ValidateUnionAttribute ` ([type] $first ` ,[type] $second ` ,[type] $third ` ,[type] $fourth ` ,[type] $fifth ) { $this. Types =@( $first ` , $second ` , $third ` , $fourth ` , $fifth ) } #n=5 ValidateUnionAttribute ` ([type] $first ` ,[type] $second ` ,[type] $third ` ,[type] $fourth ` ,[type] $fifth ` ,[type] $sixth ) { $this. Types =@( $first ` , $second ` , $third ` , $fourth ` , $fifth ` , $sixth ) } #n=6 ValidateUnionAttribute ` ([type] $first ` ,[type] $second ` ,[type] $third ` ,[type] $fourth ` ,[type] $fifth ` ,[type] $sixth ` ,[type] $seventh ) { $this. Types =@( $first ` , $second ` , $third ` , $fourth ` , $fifth ` , $sixth ` , $seventh ) } #n=7 ValidateUnionAttribute ` ([type] $first ` ,[type] $second ` ,[type] $third ` ,[type] $fourth ` ,[type] $fifth ` ,[type] $sixth ` ,[type] $seventh ` , $eighth ) { $this. Types =@( $first ` , $second ` , $third ` , $fourth ` , $fifth ` , $sixth ` , $seventh ` , $eighth ) } #n=8 [void ] Validate ([object] $argument ,[System.Management.Automation.EngineIntrinsics] $engineIntrinsics) {<# # ;Write-Host "STACK:" # ;Get-PSCallStack | Select-Object -First 8 | Format-Table -AutoSize | Out-Host # ;Write-Host "VALIDATING:" # ;Write-Host "Type: $($arguments.GetType().FullName)" # ;Write-Host "Value: <$arguments>" # ;if ($arguments -is [System.Array]) # {Write-Host "Array count: $($arguments.Count)"} # ;Write-Host "----" # ;Write-Host "Attribute instance: $($this.GetHashCode())" # ;Write-Host "Types:" # ;$this.Types | % { Write-Host " $_" } # ;Write-Host "Argument type: $($arguments.GetType().FullName)" # ;Write-Host "Argument value: <$arguments>" ; foreach($arg in $arguments ) { $val = $false ; ; foreach($typ in $this. Types ) ` { if( $arg ` -is $typ ) { $val = $true ; ;break } } ; if(-not $val ) {throw [ValidateUnionException]::new("VU[$($this.GetHashCode())] " + "Type" ` +" "+ (( $this. Types|foreach-object {"[$_]"}) -join ', ') ` +" "+ "required" + "," ` +" "+ $arg.getType() ` +" "+ "given" ` +" "+ "in value:" ` +" "+ $arg ) } } #> ;foreach( $type in $this. Types ) {if ( $argument -is $type ) ` {return } } ; ;throw [ValidateUnionException]::new("Type" ` +" "+ (( $this. Types|foreach-object {"[$_]"}) -join ', ') ` +" "+ "required" + "," ` +" "+ $argument.getType() ` +" "+ "given" ` +" "+ "in value:" ` +" "+ $argument ) ; } } |