public/Get-MrVariableType.ps1
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#Requires -Version 4.0 function Get-MrVariableType { <# .SYNOPSIS List variables and whether they're defined as parameters or in the body of a function. .DESCRIPTION Get-MrVariableType is an advanced function that returns a list of variables defined in a function and whether they are parameters or user defined within the body of the function. .PARAMETER Ast Provide a ScriptBlockAst object via parameter or pipeline input. Use Get-MrAst to create this object. .EXAMPLE Get-MrAST -Path 'C:\Scripts' | Get-MrVariableType .EXAMPLE Get-MrVariableType -Ast (Get-MrAST -Path 'C:\Scripts') .NOTES Author: Mike F Robbins Website: http://mikefrobbins.com Twitter: @mikefrobbins #> [CmdletBinding()] param ( [Parameter(Mandatory, ValueFromPipeline)] [System.Management.Automation.Language.ScriptBlockAst]$Ast ) PROCESS { $variables = $Ast.FindAll({$args[0].GetType().Name -like 'VariableExpressionAst'}, $true).Where({$_.VariablePath.UserPath -ne '_'}) $parameters = $Ast.FindAll({$args[0].GetType().Name -like 'ParameterAst'}, $true) $diff = Compare-Object -ReferenceObject $parameters.Name.VariablePath.UserPath -DifferenceObject $variables.VariablePath.UserPath -IncludeEqual foreach ($variable in $variables) { [pscustomobject]@{ Name = $variable.VariablePath.UserPath Type = if ($variable.VariablePath.UserPath -in $diff.Where({$_.SideIndicator -eq '=='}).InputObject) { 'Parameter' } else { 'UserDefined' } LineNumber = $variable.Extent.StartLineNumber Column = $variable.Extent.StartColumnNumber } } } } |