Transpilers/Templates/JavaScript.Template.psx.ps1
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<# .SYNOPSIS JavaScript Template Transpiler. .DESCRIPTION Allows PipeScript to generate JavaScript. Multiline comments with /*{}*/ will be treated as blocks of PipeScript. Multiline comments can be preceeded or followed by 'empty' syntax, which will be ignored. This is so that Inline PipeScript can be used with operators, and still be valid JavaScript syntax. The JavaScript Inline Transpiler will consider the following syntax to be empty: * ```undefined``` * ```null``` * ```""``` * ```''``` #> [ValidatePattern('\.js$')] param( # The command information. This will include the path to the file. [Parameter(Mandatory,ValueFromPipeline,ParameterSetName='TemplateFile')] [Management.Automation.CommandInfo] $CommandInfo, # If set, will return the information required to dynamically apply this template to any text. [Parameter(Mandatory,ParameterSetName='TemplateObject')] [switch] $AsTemplateObject, # A dictionary of parameters. [Collections.IDictionary] $Parameter, # A list of arguments. [PSObject[]] $ArgumentList ) begin { # We start off by declaring a number of regular expressions: $startComment = '/\*' # * Start Comments ```\*``` $endComment = '\*/' # * End Comments ```/*``` $Whitespace = '[\s\n\r]{0,}' # * IgnoredContext ```String.empty```, ```null```, blank strings and characters $IgnoredContext = "(?<ignore>(?>$("undefined", "null", '""', "''" -join '|'))\s{0,}){0,1}" # * StartRegex ```$IgnoredContext + $StartComment + '{' + $Whitespace``` $startRegex = "(?<PSStart>${IgnoredContext}${startComment}\{$Whitespace)" # * EndRegex ```$whitespace + '}' + $EndComment + $ignoredContext``` $endRegex = "(?<PSEnd>$Whitespace\}${endComment}\s{0,}${IgnoredContext})" # Create a splat containing arguments to the core inline transpiler $Splat = [Ordered]@{ StartPattern = $startRegex EndPattern = $endRegex } } process { # Add parameters related to the file if ($CommandInfo) { $Splat.SourceFile = $commandInfo.Source -as [IO.FileInfo] $Splat.SourceText = [IO.File]::ReadAllText($commandInfo.Source) } if ($Parameter) { $splat.Parameter = $Parameter } if ($ArgumentList) { $splat.ArgumentList = $ArgumentList } # If we are being used within a keyword, if ($AsTemplateObject) { $splat # output the parameters we would use to evaluate this file. } else { # Otherwise, call the core template transpiler .>PipeScript.Template @Splat # and output the changed file. } } |