add a scanner, but this seems to be a wrong solution. Change open-source head

2026-07-07 18:20:38 +08:00
parent b053567eb7
commit 1705d7c245
276 changed files with 3468 additions and 7205 deletions
@@ -0,0 +1,94 @@
+// -----------------------------------------------------------------------------
+// file="RegexAnalyzer"
+// Project: StgSharp
+// Copyright (c) Nitload.
+// SPDX-License-Identifier: MIT
+// -----------------------------------------------------------------------------
+
+using StgSharp.RegularAnalysis.Abstraction;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Reflection.Emit;
+using System.Runtime.CompilerServices;
+using System.Text;
+
+using System.Threading.Tasks;
+
+namespace StgSharp.RegularAnalysis.Text
+{
+    public record TextRegexSource
+    {
+
+        internal TextRegexSource(
+                 string pattern,
+                 AbstractSyntaxTree<RegexAstNode, RegexElementLabel> ast,
+                 List<RegexIR> base_ir,
+                 List<RegexIR> ir,
+                 Exception? analyseException = null
+        )
+        {
+            Pattern = pattern;
+            Ast = ast;
+            IRs = ir;
+            BaseIR = base_ir;
+            AnalyseException = analyseException;
+        }
+
+        public Exception? AnalyseException { get; set; }
+
+        public string Pattern { get; }
+
+        internal AbstractSyntaxTree<RegexAstNode, RegexElementLabel> Ast { get; }
+
+        internal List<RegexIR> BaseIR { get; }
+
+        internal List<RegexIR> IRs { get; }
+
+    }
+
+    public static partial class RegexAnalyzer
+    {
+
+        public static TextRegexSource Analyze(
+                                      string regex
+        )
+        {
+#pragma warning disable CA1031 
+            // RegexAnalyzer interpreter = new();
+            // interpreter._source = regex;
+            AbstractSyntaxTree<RegexAstNode, RegexElementLabel> tree;
+            try
+            {
+                tree = GenerateAST(regex);
+                OptimizeTree(tree);
+            }
+            catch (Exception ex)
+            {
+                return new TextRegexSource(regex, null, null, null, ex);
+            }
+            List<RegexIR> base_ir;
+            try
+            {
+                base_ir = GenerateIR(tree);
+            }
+            catch (Exception ex)
+            {
+                return new TextRegexSource(regex, tree, null, null, ex);
+            }
+            try
+            {
+                ScanAndOptimizeIR(base_ir, out List<RegexIR> opt_ir);
+                List<RegexIR> prefix_ir = EmitPrefix(opt_ir);
+                return new TextRegexSource(regex, tree, base_ir, prefix_ir);
+            }
+            catch (Exception ex)
+            {
+                return new TextRegexSource(regex, tree, base_ir, null, ex);
+            }
+#pragma warning restore CA1031 
+        }
+
+    }
+}