Set-LuaVersion: hererocks Wrapper for Windows PowerShell

Set-LuaVersion.ps1

function Set-LuaVersion {
    param(
        [string]$Hererocks = "$HOME\Dev\Lua",
        [switch]$Jit,
        
        [Parameter(Mandatory=$true,Position=0)]
        [string]$Version
    )

    $LuaVersion = $(if ($Jit) { "jit$Version" } else { $Version })
    # If there's already a Lua version activated, run the deactivation script.
    if (Get-Command deactivate-lua -ErrorAction SilentlyContinue) {
        deactivate-lua
    }

    if (Test-Path "$Hererocks\$LuaVersion") {
        . "$Hererocks\$LuaVersion\bin\activate.ps1"
    } else {
        Write-Warning "Downloading version $Version..."

        # Starts the installation process of the missing $Version
        if ($Jit) {
            hererocks "$Hererocks\$LuaVersion" -j $Version -rlatest
        } else {
            hererocks "$Hererocks\$LuaVersion" -l $LuaVersion -rlatest
        }
        
        . "$Hererocks\$LuaVersion\bin\activate.ps1"  
    }
}

Set-Alias -Name slv -Value Set-LuaVersion