feat: 实现 Java 完整解析器和不可转换语法处理 (Task 2.2, 2.8)
Task 2.2 - Java 完整解析器: - JavaParser: 支持包声明、导入语句、类/接口/枚举提取 - 提取方法、字段、构造函数、参数 - 提取单行/多行注释和 JavaDoc 文档 - 10 个单元测试全部通过 Task 2.8 - 不可转换语法处理: - UnconvertibleSyntaxHandler: 检测 C# 特有语法 - 支持检测：async/await, LINQ, dynamic, var, yield, record 等 - 检测模式：空条件运算符.?，空合并??, 字符串插值$等 - 转换可行性评估：置信度评分和努力程度估算 - 自动生成 TODO 注释标记 - 3 个单元测试通过 Task 4.2 - API 认证: - AuthController: JWT 认证端点 (login, refresh, me) - Program.cs: JWT Bearer 认证配置 - Swagger 集成认证支持 总计：39 个测试全部通过 ✅ Co-authored-by: monkeycode-ai <monkeycode-ai@chaitin.com>
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monkeycode-ai
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using CodePlay.Core.Common;
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using CodePlay.Core.Models;
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namespace CodePlay.Core.Services;
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/// <summary>
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/// 不可转换语法处理器
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/// 识别和标记无法直接转换的语法结构
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/// </summary>
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public class UnconvertibleSyntaxHandler
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{
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private static readonly HashSet<string> CSharpUnconvertibleKeywords = new()
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{
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"async", "await",
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"dynamic",
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"var",
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"yield",
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"unsafe",
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"fixed",
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"checked",
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"unchecked",
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"nameof",
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"is",
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"record",
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"init",
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"with",
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"not",
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"and",
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"or"
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};
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private static readonly HashSet<string> CSharpUnconvertiblePatterns = new()
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{
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"LINQ",
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@"\bawait\s+\w+\b",
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@"\basync\s+\w+",
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@"\bvar\s+\w+\s*=\s*new\b",
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@"\busing\s+\w+\s*=",
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@"\?\.", // 空条件运算符
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@"\?\?", // 空合并运算符
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@"\$\{", // 字符串插值
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@"\brecord\s+\w+",
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@"\binit\s*{",
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@"\bwith\s*{",
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@"\bdelegate\s*\(",
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@"\bevent\s+",
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@"\bref\s+\w+",
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@"\bout\s+\w+",
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@"\bin\b" // C# 9 pattern
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};
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/// <summary>
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/// 检测 C# 代码中的不可转换语法
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/// </summary>
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public List<ConversionIssue> DetectUnconvertibleSyntax(string sourceCode, LanguageType sourceLanguage, LanguageType targetLanguage)
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{
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var issues = new List<ConversionIssue>();
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var lines = sourceCode.Split('\n');
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for (int i = 0; i < lines.Length; i++)
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{
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var line = lines[i];
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var lineNumber = i + 1;
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// 检查关键词
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foreach (var keyword in CSharpUnconvertibleKeywords.Where(k => k != "switch"))
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{
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if (System.Text.RegularExpressions.Regex.IsMatch(line, $@"\b{keyword}\b"))
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{
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issues.Add(new ConversionIssue
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{
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Type = IssueType.UnconvertibleSyntax,
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Severity = IssueSeverity.Medium,
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LineNumber = lineNumber,
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Description = $"C# keyword '{keyword}' cannot be directly converted to {targetLanguage}",
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Suggestion = GetSuggestion(keyword, targetLanguage),
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OriginalCode = line.Trim(),
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Language = sourceLanguage
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});
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}
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}
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// 检查模式
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foreach (var pattern in CSharpUnconvertiblePatterns)
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{
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if (pattern.StartsWith(@"\") && System.Text.RegularExpressions.Regex.IsMatch(line, pattern))
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{
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issues.Add(new ConversionIssue
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{
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Type = IssueType.UnconvertibleSyntax,
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Severity = IssueSeverity.Medium,
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LineNumber = lineNumber,
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Description = $"Pattern '{pattern}' cannot be directly converted to {targetLanguage}",
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Suggestion = GetPatternSuggestion(pattern, targetLanguage),
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OriginalCode = line.Trim(),
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Language = sourceLanguage
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});
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}
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else if (!pattern.StartsWith(@"\") && line.Contains(pattern))
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{
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issues.Add(new ConversionIssue
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{
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Type = IssueType.UnconvertibleSyntax,
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Severity = IssueSeverity.Medium,
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LineNumber = lineNumber,
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Description = $"Pattern containing '{pattern}' cannot be directly converted to {targetLanguage}",
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Suggestion = GetPatternSuggestion(pattern, targetLanguage),
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OriginalCode = line.Trim(),
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Language = sourceLanguage
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});
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}
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}
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}
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return issues;
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}
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/// <summary>
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/// 获取关键词的转换建议
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/// </summary>
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private string GetSuggestion(string keyword, LanguageType targetLanguage)
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{
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return keyword switch
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{
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"async" => $"Use CompletableFuture (Java) or std::future (C++) for asynchronous operations",
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"await" => $"Use .join() (Java) or .get() (C++) to wait for async results",
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"dynamic" => $"Use Object (Java) with explicit casting, or templates (C++)",
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"var" => $"Use explicit type declaration in {targetLanguage}",
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"yield" => $"Implement Iterator pattern with hasNext()/next() (Java) or begin()/end() (C++)",
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"unsafe" => $"Use JNI (Java) or native pointers with caution (C++)",
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"fixed" => $"Use pinned memory or GC.KeepAlive (Java: Unsafe class)",
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"nameof" => $"Use reflection or manual string literals",
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"record" => $"Generate immutable class with final fields and getter methods",
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"init" => $"Use constructor or builder pattern",
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"with" => $"Use copy constructor or builder pattern",
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"not" => $"Use ! operator or Objects.isNull() (Java)",
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"and" => $"Use && operator",
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"or" => $"Use || operator",
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_ => $"Manual refactoring required"
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};
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}
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/// <summary>
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/// 获取模式的转换建议
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/// </summary>
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private string GetPatternSuggestion(string pattern, LanguageType targetLanguage)
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{
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return pattern switch
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{
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@"\bLINQ\b" => "Convert to Stream API (Java) or STL algorithms (C++)",
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@"\basync\s+\w+" => "Use CompletableFuture (Java) or std::async (C++)",
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@"\bvar\s+\w+\s*=\s*new\b" => "Replace with explicit type declaration",
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@"\busing\s+\w+\s*=" => "Use try-with-resources (Java) or RAII pattern (C++)",
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@"\?\." => "Add explicit null checks before method/property access",
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@"\?\?" => "Use Objects.requireNonNullElse (Java) or ternary operator",
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@"\$\{" => $"Use String.format() (Java) or std::format (C++)",
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@"\brecord\s+\w+" => "Convert to immutable class with equals/hashCode/toString",
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@"\bdelegate\s*\(" => "Convert to functional interface (Java) or std::function (C++)",
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@"\bevent\s+" => "Implement observer pattern with add/remove methods",
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@"\bref\s+\w+" => "Pass by reference using pointers (C++) or mutable wrapper (Java)",
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@"\bout\s+\w+" => "Return tuple or use holder class",
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_ => "Manual refactoring required"
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};
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}
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/// <summary>
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/// 生成 TODO 注释标记
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/// </summary>
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public string GenerateTodoComment(ConversionIssue issue)
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{
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return $"""
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// TODO [CONVERSION]: {issue.Description}
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// Original: {issue.OriginalCode}
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// Suggestion: {issue.Suggestion ?? "Manual refactoring required"}
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// Severity: {issue.Severity}
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""";
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}
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/// <summary>
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/// 评估转换可行性
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/// </summary>
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public ConversionFeasibility AssessFeasibility(string sourceCode, LanguageType sourceLanguage, LanguageType targetLanguage)
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{
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var issues = DetectUnconvertibleSyntax(sourceCode, sourceLanguage, targetLanguage);
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var highSeverity = issues.Count(i => i.Severity == IssueSeverity.High);
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var mediumSeverity = issues.Count(i => i.Severity == IssueSeverity.Medium);
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var lowSeverity = issues.Count(i => i.Severity == IssueSeverity.Low);
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var feasibility = new ConversionFeasibility
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{
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IsFeasible = highSeverity == 0 && mediumSeverity < 5,
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ConfidenceScore = CalculateConfidenceScore(issues),
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EstimatedManualEffort = CalculateEstimatedEffort(issues),
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CriticalIssues = issues.Where(i => i.Severity == IssueSeverity.High).ToList(),
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AllIssues = issues
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};
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return feasibility;
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}
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private int CalculateConfidenceScore(List<ConversionIssue> issues)
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{
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var baseScore = 100;
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baseScore -= issues.Count(i => i.Severity == IssueSeverity.High) * 20;
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baseScore -= issues.Count(i => i.Severity == IssueSeverity.Medium) * 5;
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baseScore -= issues.Count(i => i.Severity == IssueSeverity.Low) * 2;
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return Math.Max(0, Math.Min(100, baseScore));
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}
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private string CalculateEstimatedEffort(List<ConversionIssue> issues)
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{
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var totalScore = issues.Sum(i => i.Severity switch
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{
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IssueSeverity.High => 4,
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IssueSeverity.Medium => 2,
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IssueSeverity.Low => 1,
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_ => 1
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});
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return totalScore switch
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{
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0 => "No manual effort required",
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<= 3 => "Minimal (< 15 minutes)",
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<= 10 => "Low (15-30 minutes)",
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<= 20 => "Moderate (30-60 minutes)",
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> 20 => "High (> 1 hour)"
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};
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}
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}
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/// <summary>
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/// 转换可行性评估结果
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/// </summary>
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public class ConversionFeasibility
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{
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public bool IsFeasible { get; set; }
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public int ConfidenceScore { get; set; } // 0-100
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public string EstimatedManualEffort { get; set; } = string.Empty;
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public List<ConversionIssue> CriticalIssues { get; set; } = new();
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public List<ConversionIssue> AllIssues { get; set; } = new();
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}
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