Transpilers/Core/Pipescript.FunctionDefinition.psx.ps1
|
<# .SYNOPSIS PipeScript Function Transpiler .DESCRIPTION Transpiles Function Definitions. #> param( # An abstract syntax tree function definition. [Parameter(Mandatory,ParameterSetName='FunctionAst',ValueFromPipeline)] [Management.Automation.Language.FunctionDefinitionAst] $FunctionDefinition ) process { $TranspilerSteps = @() $realFunctionName = $functionDefinition.Name if ($FunctionDefinition.Name -match '\W(?<Name>\w+)$' -or $FunctionDefinition.Name -match '^(?<Name>[\w-]+)\W') { $TranspilerSteps = @([Regex]::new(' ^\s{0,} (?<BalancedBrackets> \[ # An open bracket (?> # Followed by... [^\[\]]+| # any number of non-bracket character OR \[(?<Depth>)| # an open bracket (in which case increment depth) OR \](?<-Depth>) # a closed bracket (in which case decrement depth) )*(?(Depth)(?!)) # until depth is 0. \] # followed by a closing bracket ){0,} ', 'IgnoreCase,IgnorePatternWhitespace','00:00:00.1').Match($FunctionDefinition.Name).Groups["BalancedBrackets"]) if ($TranspilerSteps ) { $transpilerStepsEnd = $TranspilerSteps[-1].Start + $transpilerSteps[-1].Length $realFunctionName = $functionDefinition.Name.Substring($transpilerStepsEnd) } } $newFunction = @( if ($FunctionDefinition.IsFilter) { "filter $realFunctionName {" } else { "function $realFunctionName {" } # containing the transpiled funciton body. [ScriptBlock]::Create(($functionDefinition.Body.Extent -replace '^{' -replace '}$')) | .>Pipescript -Transpiler $transpilerSteps "}" ) # Create a new script block [ScriptBlock]::Create($newFunction -join [Environment]::NewLine) } |