fix getSymbolsForCompletion raise exception

should first check if the range `beforeTokens` is empty.
dlang-community · Apr 17, 2024 · 27b1042 · 27b1042
1 parent 57794ca
commit 27b1042
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/dcd/server/autocomplete/util.d b/src/dcd/server/autocomplete/util.d
@@ -147,7 +147,8 @@ SymbolStuff getSymbolsForCompletion(const AutocompleteRequest request,
 	auto expression = getExpression(beforeTokens);
 	auto symbols = getSymbolsByTokenChain(pair.scope_, expression,
 		request.cursorPosition, type);
-	if (symbols.length == 0 && doUFCSSearch(stringToken(beforeTokens.front), stringToken(beforeTokens.back))) {
+	if (symbols.length == 0 && !beforeTokens.empty &&
+		doUFCSSearch(stringToken(beforeTokens.front), stringToken(beforeTokens.back))) {
 		// Let search for UFCS, since we got no hit
 		symbols ~= getSymbolsByTokenChain(pair.scope_, getExpression([beforeTokens.back]), request.cursorPosition, type);
 	}