Commands/Move-Turtle.ps1
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function Move-Turtle { <# .SYNOPSIS Moves a turtle. .DESCRIPTION Moves a turtle by invoking a method with any number of arguments. .EXAMPLE New-Turtle | Move-Turtle Forward 10 | Move-Turtle Right 90 | Move-Turtle Forward 10 | Move-Turtle Right 90 | Move-Turtle Forward 10 | Move-Turtle Right 90 | Move-Turtle Forward 10 | Move-Turtle Right 90 | Save-Turtle "./Square.svg" #> [CmdletBinding(PositionalBinding=$false)] param( # The method used to move the turtle. # Any method on the turtle can be called this way. [Parameter(Position=1,ValueFromPipelineByPropertyName)] [ArgumentCompleter({ param ( $commandName, $parameterName, $wordToComplete, $commandAst, $fakeBoundParameters ) if (-not $script:TurtleTypeData) { $script:TurtleTypeData = Get-TypeData -TypeName Turtle } $methodNames = @(foreach ($memberName in $script:TurtleTypeData.Members.Keys) { if ($script:TurtleTypeData.Members[$memberName] -is [Management.Automation.Runspaces.ScriptMethodData]) { $memberName } }) if ($wordToComplete) { return $methodNames -like "$wordToComplete*" } else { return $methodNames } })] [string] $Method = 'Forward', # The arguments to pass to the method. [Parameter(ValueFromRemainingArguments,ValueFromPipelineByPropertyName)] [PSObject[]] $ArgumentList = 1, # The turtle input object. # If not provided, a new turtle will be created. [Parameter(ValueFromPipeline)] [PSObject] $InputObject ) process { if (-not $PSBoundParameters.InputObject) { $InputObject = $PSBoundParameters['InputObject'] = [PSCustomObject]@{PSTypeName='Turtle'} } $inputMethod = $inputObject.psobject.Methods[$method] if (-not $inputMethod) { Write-Error "Method '$method' not found on Turtle object." return } $inputMethod.Invoke($ArgumentList) } } |