# Autocompletion for clang

ClangAutocompletion.ps1

# Autocompletion for clang - only works in pwsh

Register-ArgumentCompleter -CommandName clang -Native -ScriptBlock {
    param($wordToComplete, $commandAst)

    if ($wordToComplete.StartsWith('-')) {
        $p,$a = $wordToComplete -split '=',2
        if ($null -ne $a) {
            $clangArg = "$p=,$a"
            $type = [System.Management.Automation.CompletionResultType]::ParameterValue
        } else {
            $clangArg = $p
            $type = [System.Management.Automation.CompletionResultType]::ParameterName
        }

        foreach ($completion in clang --autocomplete=$clangArg) {
            $text,$tooltip = $completion -split "\s+", 2
            if (!$tooltip) { $tooltip = $text }
            $listItem = $text
            if ($null -ne $a) {
                $text = "$p=$text"
            }
            [System.Management.Automation.CompletionResult]::new($text, $listItem, $type, $toolTip)
        }
    }
    
    # TODO: complete files based on extension, e.g. only c/cpp files?
}