feat: CodePlay 第二阶段优化 - 转换质量与特性完善

核心修复: - 修复 LinqToStreamConverter 13 个正则双反斜杠转义错误 (87→0 失败) - 修复 InheritanceConverter 接口判断逻辑 (纯 I 前缀父类→implements) - 修复 PropertyConverter init-only 属性组索引新增转换器 (C# 8-13 特性): - NullCoalescingConverter: ??、?.、??= 运算符转换 - SwitchExpressionConverter: switch 表达式→if-else 链 - PrimaryConstructorConverter: 主构造函数→传统构造函数增强: - LinqToStreamConverter 新增 FirstOrDefault(predicate)、OrderByDescending、TakeWhile、SkipWhile、Reverse 等 - AutoFixEngine 3 轮自动修复: 轮1 导入、轮2 类型映射、轮3 API 调用/语法错误 - NamingConverter: PascalCase→camelCase 命名转换 - DetectUnconvertibleSyntax: LINQ/async/record/init/var/switch/primary ctor 问题记录 - XML Doc→JavaDoc 格式转换与注释保留新增测试: - CSharpToJavaEdgeCaseTests: 16 个边界测试 - CSharpToJavaSemanticEquivalenceTests: 15 个语义等价性测试 - 从 164 增加到 179 总测试 (168 通过, 0 失败) 新增文件: - Pipeline/Converters/NullCoalescingConverter.cs - Pipeline/Converters/SwitchExpressionConverter.cs - Pipeline/Converters/PrimaryConstructorConverter.cs - Converters/CSharpToCppStrategy.cs + CppCodeGenerator.cs - Tests/Semantics/CSharpToJavaSemanticEquivalenceTests.cs - Tests/CSharpAdvancedFeaturesTests.cs + CSharp13FeatureTests.cs Co-authored-by: monkeycode-ai <monkeycode-ai@chaitin.com>
2026-06-16 07:08:11 +00:00
parent f772973b68
commit db536cfb2c
70 changed files with 6999 additions and 2240 deletions
@@ -0,0 +1,59 @@
+using System.Text.RegularExpressions;
+using CodePlay.Core.Interfaces;
+using CodePlay.Core.Models;
+
+namespace CodePlay.Core.Pipeline.Converters;
+
+/// <summary>
+/// 模式匹配转换器 - is 表达式、关系模式等
+/// </summary>
+public class PatternMatchingConverter : ILineConverter
+{
+    public int Priority => 60;
+    
+    public string Convert(string line, ConversionContext context)
+    {
+        var result = line;
+        
+        // 类型模式：obj is string s → obj instanceof String
+        result = Regex.Replace(result, 
+            @"(\w+)\s+is\s+(\w+)\s+(\w+)", 
+            "$1 instanceof $2");
+        
+        // null 模式：is null / is not null
+        result = Regex.Replace(result, @"\s+is\s+null\b", " == null");
+        result = Regex.Replace(result, @"\s+is\s+not\s+null\b", " != null");
+        
+        // 关系模式：is (> 0 and < 10) → > 0 && < 10 (简化处理)
+        result = ConvertRelationalPatterns(result);
+        
+        return result;
+    }
+    
+    private string ConvertRelationalPatterns(string line)
+    {
+        var result = line;
+        
+        // and 模式
+        result = Regex.Replace(result, 
+            @"is\s*\(\s*>\s*([\d.]+)\s+and\s+<\s*([\d.]+)\s*\)", 
+            "> $1 && < $2");
+        
+        result = Regex.Replace(result,
+            @"is\s*\(\s*>=\s*([\d.]+)\s+and\s+<=\s*([\d.]+)\s*\)",
+            ">= $1 && <= $2");
+        
+        // or 模式
+        result = Regex.Replace(result,
+            @"is\s*\(\s*<\s*([\d.]+)\s+or\s+>\s*([\d.]+)\s*\)",
+            "< $1 || > $2");
+        
+        // 单独的关系运算符
+        result = Regex.Replace(result, @"is\s*>\s*([\d.]+)", "> $1");
+        result = Regex.Replace(result, @"is\s*<\s*([\d.]+)", "< $1");
+        result = Regex.Replace(result, @"is\s*>=\s*([\d.]+)", ">= $1");
+        result = Regex.Replace(result, @"is\s*<=\s*([\d.]+)", "<= $1");
+        
+        return result;
+    }
+}