use new exit lable

2026-09-14 18:21:23 +08:00
parent 9e9078ced1
commit 57587bec16
6 changed files with 169 additions and 197 deletions
@@ -38,8 +38,14 @@ namespace Nitload
            SequenceEmitter<string> body = new();
            List<SequenceEmitter<string>> functions = [];
            SourceGenContext context = new();
-            ExitLabel exit = context.RequestExitLabel(ExitMode.Goto);
-            GenerateMethodSource(analysis.Ast.Root, body, functions, context, exit);
+            ExitLabel local_fail = context.RequestExitLabel(ExitKind.MatchFailed);
+            ExitLabel backtrack = local_fail;
+            ExitLabel end = context.RequestExitLabel(ExitKind.MatchEnd);
+            GenerateMethodSource(analysis.Ast.Root, body, functions, context, local_fail, ref backtrack);
+            _ = body.AppendLine($"goto {end.GetLabelName()};")
+                    .AppendLine($"{local_fail.GetLabelName()}: {{}}")
+                    .AppendLine("// TODO(NGRA): Produce the root failure result here.")
+                    .AppendLine($"{end.GetLabelName()}: {{}}");

            foreach (string line in body.ToList()) {
                Console.WriteLine(line);