agentsqripts/lib/wet-code/ast/semantic-similarity/analyzers/identifyDuplicationPattern.js

Comprehensive static code analysis toolkit for identifying technical debt, security vulnerabilities, performance issues, and code quality problems

/**
 * @file Identify duplication pattern type
 * @description Single responsibility: Identify the type of duplication pattern in code blocks
 */

const calculateSemanticSimilarity = require('../calculators/calculateSemanticSimilarity');

/**
 * Identify the type of duplication pattern
 */
function identifyDuplicationPattern(blocks) {
  if (!blocks || blocks.length < 2) return 'unique';
  
  // Calculate average similarity across all blocks
  let totalSimilarity = 0;
  let comparisons = 0;
  
  for (let i = 0; i < blocks.length - 1; i++) {
    for (let j = i + 1; j < blocks.length; j++) {
      totalSimilarity += calculateSemanticSimilarity(blocks[i], blocks[j]);
      comparisons++;
    }
  }
  
  const avgSimilarity = comparisons > 0 ? totalSimilarity / comparisons : 0;
  
  // Check for exact duplicates
  const allExact = blocks.every(b => b.hash === blocks[0].hash);
  if (allExact) return 'exact_duplicate';
  
  // Check for parameter variations
  const sameStructure = blocks.every(b => b.astNode === blocks[0].astNode);
  const similarComplexity = blocks.every(b => 
    Math.abs(b.complexity - blocks[0].complexity) <= 2
  );
  
  if (sameStructure && similarComplexity && avgSimilarity > 0.8) {
    return 'parameterized_logic';
  }
  
  // Check for similar patterns
  if (avgSimilarity > 0.7) return 'similar_pattern';
  if (avgSimilarity > 0.5) return 'loose_pattern';
  
  return 'weak_similarity';
}

module.exports = identifyDuplicationPattern;