Gist get me the Doc Ratio

DocRatio.ps1

function DocRatio {
    <#
    .SYNOPSIS
        DocRatio
    .DESCRIPTION
        Gets the ratio of comments to non-comments in a script
    .EXAMPLE
        docratio docratio
    #>
    $allInputAndArgs = @($input) + $args

    foreach ($thing in $allInputAndArgs) {

        $originalThing = $thing

        if ($thing -is [string] -and (Test-Path $thing -ErrorAction Ignore)) {
            $thing = Get-Item -Path $thing
        }

        if ($thing -is [string] -and $(
            $thingFunction = $ExecutionContext.SessionState.InvokeCommand.GetCommand($thing,'Function')
            $thingFunction
        )) {
            $thing = $thingFunction.ScriptBlock
        }

        if ($thing -is [IO.FileInfo] -and $thing.Extension -eq '.ps1') {
            $thing = Get-Command $thing.FullName
        }

        if ($thing -is [Management.Automation.ExternalScriptInfo]) {
            $thing = $thing.ScriptBlock
        }

        if ($thing -is [ScriptBlock]) {
            $tokens = [Management.Automation.PSParser]::Tokenize("$thing", [ref]$null)
            $totalLength = 0
            $commentLength = 0 
            
            foreach ($token in $tokens) {
                $totalLength += $token.Length 
                if ($token.Type -eq 'Comment') {
                    $commentLength += $token.Length
                }            
            }

            if ($totalLength) {
                $ratio = $commentLength / $totalLength
                @{$originalThing=$ratio}
            }
        }
    }
}