agentsqripts/lib/wet-code/ast/refactoring/analyzeDifferences.js

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

/**
 * @file Analyze differences between duplicate blocks
 * @description Single responsibility: Identify variations in duplicate code
 */

function analyzeDifferences(blocks) {
  const differences = {
    variables: new Set(),
    literals: new Set(),
    functionCalls: new Set(),
    patterns: []
  };
  
  // Simple heuristic: compare code strings to find differences
  if (blocks.length < 2) return differences;
  
  const baseCode = blocks[0].code;
  
  blocks.slice(1).forEach(block => {
    const currentCode = block.code;
    
    // Find differing parts (simplified)
    // In a real implementation, this would use AST comparison
    const baseTokens = baseCode.split(/\s+/);
    const currentTokens = currentCode.split(/\s+/);
    
    baseTokens.forEach((token, index) => {
      if (currentTokens[index] && token !== currentTokens[index]) {
        // Track different values
        if (/^['"'].*['"']$/.test(token)) {
          differences.literals.add(token);
          differences.literals.add(currentTokens[index]);
        } else if (/^[a-zA-Z_]\w*$/.test(token)) {
          differences.variables.add(token);
          differences.variables.add(currentTokens[index]);
        }
      }
    });
  });
  
  return differences;
}

module.exports = analyzeDifferences;