process cases of ALT as special rules

2026-09-10 18:17:09 +08:00
parent 8755185e78
commit f372f83171
18 changed files with 486 additions and 166 deletions
@@ -0,0 +1,65 @@
+// -----------------------------------------------------------------------------
+// file="TestRegexGenerate"
+// Project: Nitload
+// Copyright (c) Nitload.
+// SPDX-License-Identifier: MIT
+// -----------------------------------------------------------------------------
+
+using Nitload.RegularAnalysis.Abstraction;
+using Nitload.RegularAnalysis.Text;
+using System;
+using System.Collections.Generic;
+using System.Runtime.ExceptionServices;
+using static Nitload.RegularAnalysis.Text.TextRegexSourceGen;
+
+namespace Nitload
+{
+    internal static class TestRegexGenerate
+    {
+        public static int Run(params string[] args)
+        {
+            if (args.Length > 1) {
+                throw new ArgumentException("Expected at most one regex pattern.", nameof(args));
+            }
+            if (args.Length == 1)
+            {
+                Print(args[0]);
+                return 0;
+            }
+
+            while (true)
+            {
+                Console.Write("regex> ");
+                string? pattern = Console.ReadLine();
+                if (pattern is null or ":exit") {
+                    return 0;
+                }
+                Print(pattern);
+            }
+        }
+
+        private static void Print(string pattern)
+        {
+            TextRegexSource analysis = RegexAnalyzer.Analyze(pattern);
+            if (analysis.AnalyseException is not null) {
+                ExceptionDispatchInfo.Throw(analysis.AnalyseException);
+            }
+
+            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);
+
+            foreach (string line in body.ToList()) {
+                Console.WriteLine(line);
+            }
+            foreach (SequenceEmitter<string> function in functions)
+            {
+                foreach (string line in function.ToList()) {
+                    Console.WriteLine(line);
+                }
+            }
+        }
+    }
+}