Exemple #1
0
 protected override void VisitAnyExpression(AnyExpression expression)
 {
     CS.IndentInOut(
         "AnyExpression",
         () =>
     {
         Locals.PeekPrep(Writer);
         CS.If(
             $"!{Cfg.CurName}.AtEnd",
             () =>
         {
             using var next     = Locals.Use("next");
             using var location = Locals.Use("location");
             using var node     = Locals.Use("node");
             CS.Ln($"{next} = {Cfg.CurName}.Advance(1);");
             CS.Ln($"{location} = Location.From({Cfg.CurName}, {next});");
             CS.Ln($"{node} = Leaf.From({location}, NodeSymbols.Any, ((char){Cfg.CurName}.Current).ToString(CultureInfo.InvariantCulture));");
             CS.Ln($"{Locals.Result} = Result.Success({node}, {next}, {node});");
         },
             () =>
         {
             CS.Ln($"{Locals.Result} = Result.Fail({Cfg.CurName});");
         });
     });
 }
Exemple #2
0
            protected override void VisitStarExpression(StarExpression star)
            {
                CS.IndentInOut(
                    "StarExpression",
                    () =>
                {
                    using var start    = Locals.Use("start");
                    using var nodes    = Locals.Use("nodes");
                    using var location = Locals.Use("location");
                    using var node     = Locals.Use("node");
                    CS.Ln($"{start} = {Cfg.CurName};");
                    CS.Ln($"{nodes} = new List<INode>(10);");
                    Locals.PeekPrep(Writer);
                    CS.ForEver(
                        () =>
                    {
                        VisitExpression(star.Expression);
                        CS.If(
                            $"{Locals.Result}.IsSuccess",
                            () =>
                        {
                            CS.Ln($"{Cfg.CurName} = {Locals.Result}.Next;");
                            CS.Ln($"{nodes}.AddRange({Locals.Result}.Nodes);");
                        },
                            () =>
                        {
                            CS.Ln("break;");
                        });
                    });

                    CS.Ln($"{location} = Location.From({start}, {Cfg.CurName});");
                    CS.Ln($"{node} = NodeList.From({location}, NodeSymbols.Star, {nodes});");
                    CS.Ln($"{Locals.Result} = Result.Success({location}, {Cfg.CurName}, {node});");
                });
            }
Exemple #3
0
 protected override void VisitNotExpression(NotExpression expression)
 {
     CS.IndentInOut(
         "NotExpression",
         () =>
     {
         Locals.PeekPrep(Writer);
         VisitExpression(expression.Expression);
         CS.If(
             $"{Locals.Result}.IsSuccess",
             () => CS.Ln($"{Locals.Result} = Result.Fail({Cfg.CurName});"),
             () => CS.Ln($"{Locals.Result} = Result.Success({Locals.Result}, {Cfg.CurName});"));
     });
 }