feat: Add root handler for text document range formatting

root-handler/text-document-range-formatting.go

@@ -0,0 +1,39 @@
+package roothandler
+
+import (
+	sshdconfig "config-lsp/handlers/sshd_config/lsp"
+	"github.com/tliron/glsp"
+	protocol "github.com/tliron/glsp/protocol_3_16"
+)
+
+func TextDocumentRangeFormattingFunc(
+	context *glsp.Context,
+	params *protocol.DocumentRangeFormattingParams,
+) ([]protocol.TextEdit, error) {
+	language := rootHandler.GetLanguageForDocument(params.TextDocument.URI)
+
+	if language == nil {
+		showParseError(
+			context,
+			params.TextDocument.URI,
+			undetectableError,
+		)
+
+		return nil, undetectableError.Err
+	}
+
+	switch *language {
+	case LanguageHosts:
+		return nil, nil
+	case LanguageSSHDConfig:
+		return sshdconfig.TextDocumentRangeFormatting(context, params)
+	case LanguageFstab:
+		return nil, nil
+	case LanguageWireguard:
+		return nil, nil
+	case LanguageAliases:
+		return nil, nil
+	}
+
+	panic("root-handler/TextDocumentRangeFormattingFunc: unexpected language" + *language)
+}