code-analysis

Code Analysis Example

This example demonstrates comprehensive static code analysis using the PHP parser to extract metrics, detect patterns, and assess code quality.

What it does

• Performs comprehensive static analysis of PHP code
• Calculates various code metrics and complexity scores
• Identifies potential code quality issues
• Provides detailed reports with actionable insights
• Generates overall code quality scores

Key Features

Code Metrics

• Lines of Code: Total line count
• Function/Class Counts: Structure analysis
• Variable Usage: Frequency analysis
• Nesting Depth: Complexity measurement
• Cyclomatic Complexity: Control flow complexity

Analysis Components

• FunctionInfo: Parameter count, visibility, complexity
• ClassInfo: Methods, properties, visibility distribution
• Variable Tracking: Usage patterns and frequency
• Issue Detection: Quality problems with suggestions

Quality Checks

• Parameter Count: Warns about functions with too many parameters
• Complexity Analysis: Identifies overly complex code paths
• Nesting Depth: Detects deeply nested structures
• Code Patterns: Analyzes expressions and control structures

Metrics Analyzed

Structural Metrics

• Function and class declarations
• Method and property counts
• Variable usage frequency
• Expression complexity

Complexity Metrics

• Cyclomatic complexity (control flow branches)
• Maximum nesting depth
• Binary expression density
• Assignment pattern analysis

Quality Indicators

• Parameter count warnings
• Complexity thresholds
• Pattern detection
• Best practice suggestions

Running the example

cd examples/code-analysis
go run main.go

Expected output

The program provides:

• Code Metrics: Quantitative analysis of code structure
• Function Analysis: Details about each function's complexity
• Class Analysis: Object-oriented structure examination
• Variable Usage: Frequency and pattern analysis
• Issues Found: Quality problems with improvement suggestions
• Quality Score: Overall assessment (0-100 scale)
• Pattern Analysis: Additional structural insights
• Improvement Suggestions: Actionable recommendations

Score Card System

The quality score is calculated based on:

• Base Score: 100 points
• Complexity Penalty: -10 for high cyclomatic complexity
• Nesting Penalty: -15 for deep nesting (>5 levels)
• Issue Penalty: -5 per detected issue

Score ranges:

• 90-100: 🌟 Excellent
• 80-89: ✅ Good
• 70-79: 👍 Fair
• 60-69: ⚠️ Needs Improvement
• 0-59: ❌ Poor

Production Applications

This analysis framework is ideal for:

• Code Review Tools: Automated quality assessment
• CI/CD Integration: Quality gates and metrics tracking
• Technical Debt Analysis: Identifying refactoring priorities
• Coding Standards: Enforcement of best practices
• Documentation Generation: Automated code insights
• Refactoring Planning: Data-driven improvement strategies

Extending the Analyzer

To add more analysis features:

• Implement semantic analysis rules
• Add design pattern detection
• Include security vulnerability scanning
• Support custom quality rules
• Add historical trend analysis
• Integrate with external quality tools