Open SWE - Repository Analysis

Overview

Estimated time: 30–40 minutes

Master Open SWE's advanced repository analysis capabilities for understanding codebases, identifying patterns, and making intelligent modifications across complex projects.

Learning Objectives

• Analyze large codebases using Open SWE's understanding capabilities
• Identify code patterns, dependencies, and architectural insights
• Execute complex cross-file modifications and refactoring
• Generate comprehensive codebase documentation and reports

Codebase Analysis

Repository Structure Analysis

# Analyze repository structure and patterns
python -m opendevin --task "analyze_repository" --repo "./my-project" \
  --output "analysis_report.md" \
  --include-patterns "*.py,*.js,*.ts,*.jsx,*.tsx" \
  --exclude-dirs "node_modules,venv,.git"

Dependency Mapping

Task: "Map all dependencies in this React project:
1. Component dependencies and prop flows
2. API service usage patterns
3. Utility function references
4. Style/theme dependencies
5. External library usage
Generate a dependency graph and identify potential issues."

Task: "Analyze the system architecture:
1. Identify design patterns used
2. Find architectural inconsistencies
3. Suggest improvements for scalability
4. Identify potential refactoring opportunities
5. Check for SOLID principle violations"

Code Pattern Recognition

Anti-Pattern Detection

Comprehensive code quality analysis:

"Scan the entire codebase for common anti-patterns:
1. Long parameter lists (>5 parameters)
2. Deep nesting (>4 levels)
3. Large classes/functions (>200 lines)
4. Duplicated code blocks
5. God objects and classes
6. Tight coupling between modules
7. Missing error handling
8. Hard-coded values and magic numbers

Provide specific file locations and suggested refactoring approaches."

Security Vulnerability Scanning

Security audit task:
"Perform comprehensive security analysis:
- SQL injection vulnerabilities
- XSS attack vectors
- Authentication/authorization flaws
- Input validation gaps
- Sensitive data exposure
- Insecure API endpoints"

Compliance verification:
"Check codebase compliance with:
- OWASP security guidelines
- Accessibility standards (WCAG)
- Performance best practices
- Industry coding standards
- Documentation requirements"

Cross-File Modifications

Large-Scale Refactoring

Complex refactoring task:

"Refactor the entire user management system:

1. Current Issues:
   - User data scattered across multiple files
   - Inconsistent naming conventions
   - Mixed authentication patterns
   - No proper error handling

2. Refactoring Goals:
   - Centralize user-related logic
   - Implement consistent API patterns
   - Add comprehensive error handling
   - Improve type safety with TypeScript
   - Add proper validation and sanitization

3. Files to modify:
   - All user-related components
   - Authentication middleware
   - API route handlers
   - Database models and migrations
   - Frontend store/context files

4. Requirements:
   - Maintain backward compatibility
   - Add comprehensive tests
   - Update documentation
   - Follow established patterns"

API Standardization

Standardize all API endpoints:
- Consistent response formats
- Proper HTTP status codes
- Standard error handling
- Pagination patterns
- Rate limiting implementation

Update database schema:
- Add missing indexes
- Normalize data structures
- Add foreign key constraints
- Implement soft deletes
- Add audit trail columns

Documentation Generation

Automated Documentation

Generate comprehensive project documentation:

"Create complete project documentation:

1. Architecture Overview:
   - System architecture diagram
   - Component relationships
   - Data flow diagrams
   - Technology stack explanation

2. API Documentation:
   - All endpoints with examples
   - Request/response schemas
   - Authentication requirements
   - Error codes and messages

3. Component Documentation:
   - Props and interfaces
   - Usage examples
   - Styling guidelines
   - Accessibility considerations

4. Development Guide:
   - Setup instructions
   - Development workflow
   - Testing procedures
   - Deployment process

5. Contributing Guidelines:
   - Code style requirements
   - Review process
   - Issue reporting
   - Feature request process"

Performance Analysis

Performance Bottleneck Detection

Migration Assistance

Framework Migrations

Large-scale migration project:

"Migrate React application from version 16 to 18:

1. Dependency Updates:
   - Update React and React-DOM
   - Update all React-related packages
   - Resolve version conflicts
   - Update peer dependencies

2. Code Updates:
   - Replace deprecated lifecycle methods
   - Update component patterns to hooks
   - Fix breaking changes in APIs
   - Update TypeScript types

3. Testing Updates:
   - Update test configurations
   - Fix broken tests
   - Add new test patterns
   - Update testing utilities

4. Build System:
   - Update build configurations
   - Fix webpack/bundler issues
   - Update CI/CD pipelines
   - Test deployment process"

Best Practices