calculate_complexity
Analyze code complexity metrics like cyclomatic and cognitive complexity to identify maintainability issues and refactoring opportunities in multiple programming languages.
Instructions
计算代码复杂度指标（圈复杂度、认知复杂度等）
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| code | Yes | 要分析的代码 | |
| language | Yes | 编程语言 |
Implementation Reference
- src/tools/complexityCalculator.ts:6-51 (handler)Core implementation of the calculate_complexity tool: computes cyclomatic complexity, cognitive complexity, Halstead metrics, maintainability index, and provides analysis, recommendations, and risk level.
export async function calculateComplexity( code: string, language: string ): Promise<ComplexityResult> { const metrics: ComplexityMetrics = { cyclomaticComplexity: 0, cognitiveComplexity: 0, halsteadComplexity: { vocabulary: 0, length: 0, difficulty: 0, effort: 0, volume: 0, bugs: 0, time: 0 }, maintainabilityIndex: 0, linesOfCode: 0, logicalLinesOfCode: 0, commentLines: 0, blankLines: 0 }; // 基础指标计算 calculateBasicMetrics(code, metrics); // 圈复杂度计算 metrics.cyclomaticComplexity = calculateCyclomaticComplexity(code, language); // 认知复杂度计算 metrics.cognitiveComplexity = calculateCognitiveComplexity(code, language); // Halstead复杂度计算 metrics.halsteadComplexity = calculateHalsteadComplexity(code, language); // 可维护性指数计算 metrics.maintainabilityIndex = calculateMaintainabilityIndex(metrics); return { language, metrics, analysis: analyzeComplexity(metrics), recommendations: generateComplexityRecommendations(metrics), riskLevel: assessRiskLevel(metrics) }; } - src/index.ts:264-281 (handler)MCP tool handler wrapper: validates input arguments using Zod and delegates to the core calculateComplexity function, formats result as MCP content.
private async handleCalculateComplexity(args: any) { const schema = z.object({ code: z.string(), language: z.string() }); const { code, language } = schema.parse(args); const result = await calculateComplexity(code, language); return { content: [ { type: 'text', text: JSON.stringify(result, null, 2) } ] }; } - src/index.ts:130-147 (registration)Tool registration in MCP server's listTools handler: defines name, description, and JSON input schema for calculate_complexity.
{ name: 'calculate_complexity', description: '计算代码复杂度指标（圈复杂度、认知复杂度等）', inputSchema: { type: 'object', properties: { code: { type: 'string', description: '要分析的代码' }, language: { type: 'string', description: '编程语言' } }, required: ['code', 'language'] } } - src/types/index.ts:85-112 (schema)TypeScript interfaces defining the output structure (ComplexityResult, ComplexityMetrics, HalsteadMetrics) used by the tool.
export interface ComplexityResult { language: string; metrics: ComplexityMetrics; analysis: string; recommendations: string[]; riskLevel: 'low' | 'medium' | 'high' | 'critical'; } export interface ComplexityMetrics { cyclomaticComplexity: number; cognitiveComplexity: number; halsteadComplexity: HalsteadMetrics; maintainabilityIndex: number; linesOfCode: number; logicalLinesOfCode: number; commentLines: number; blankLines: number; } export interface HalsteadMetrics { vocabulary: number; length: number; difficulty: number; volume: number; effort: number; bugs: number; time: number; }