# PMAT Release v2.171.1 - C/C++ and Kotlin Language Support

## Overview

PMAT v2.171.1 introduces comprehensive C and C++ language support, enhancing our multi-language analysis capabilities. This release implements AST-based analysis for C and C++ files, enabling function extraction, complexity analysis, and deep context generation for these critical languages. Additionally, this release includes experimental support for Kotlin language analysis with coroutine detection, as part of the Sprint 50 roadmap.

## Key Features

### C/C++ Language Support

- **Complete AST-based Analysis**:
  - Full support for C language (`.c`, `.h`)
  - Full support for C++ language (`.cpp`, `.cc`, `.cxx`, `.hpp`, `.hxx`, `.hh`)
  - AST strategy pattern implementation for language integration
  - Integration with unified AST framework

- **Code Analysis Capabilities**:
  - Function extraction and complexity analysis
  - Struct/class detection and field counting
  - Namespace tracking and qualification
  - Template detection (C++)
  - Cyclomatic and cognitive complexity metrics
  - Header file analysis

- **Deep Context Integration**:
  - C/C++ analysis in deep context generation
  - Function qualification with namespace context
  - Accurate complexity metrics per file and function
  - Symbol table extraction for C/C++ entities

### Kotlin Language Support (Experimental)

- **Kotlin AST Analysis**:
  - Support for Kotlin source files (`.kt`, `.kts`)
  - AST-based parsing with tree-sitter-kotlin
  - Integration with unified AST framework

- **Kotlin-Specific Features**:
  - Coroutine (suspend function) detection
  - Data class and interface analysis
  - Extension function detection
  - Package qualification for symbol names
  - Class and method extraction

- **Deep Context Integration**:
  - Kotlin inclusion in deep context output
  - Package-aware symbol qualification
  - Accurate function and class detection

## Implementation Details

### New Components

- **C Language Analyzer**: `server/src/services/ast/languages/c.rs`
  - Complete C source parser with AST extraction
  - Support for C functions, structs, enums, typedefs
  - Complexity analysis using heuristic approach

- **C++ Language Analyzer**: `server/src/services/ast/languages/cpp.rs`
  - Complete C++ source parser with AST extraction
  - Support for classes, namespaces, templates
  - Method qualification with class/namespace context

- **AST Strategy Implementation**: `server/src/services/ast/languages/c_cpp_strategy.rs`
  - Implementation of the `AstStrategy` trait for C/C++
  - Integration with the unified AST framework
  - Language-specific file detection and routing

- **Kotlin Language Analyzer**: `server/src/services/ast/languages/kotlin.rs`
  - Complete Kotlin source parser with AST extraction
  - Support for classes, interfaces, functions, coroutines
  - Package-aware symbol qualification

- **Kotlin Strategy Adapter**: `server/src/services/ast/languages/kotlin_strategy.rs`
  - Adapter for Kotlin AST strategy
  - Integration with unified AST framework

### Integration Points

- **Unified AST Framework**: All C/C++ and Kotlin analyzers integrated with the core AST system
- **Deep Context Generation**: C/C++/Kotlin analysis results included in deep context output
- **Complexity Analysis**: Full cyclomatic and cognitive complexity calculation for C/C++/Kotlin code
- **Symbol Table**: C/C++/Kotlin functions, structs, classes extracted to symbol table

## Quality Assurance

- **Clean Build**: Zero compiler errors and warnings
- **Test Coverage**: Comprehensive test suite for both C and C++ analyzers
- **Book Validation**: All critical chapters in the pmat-book pass validation
- **Performance**: Minimal overhead added to analysis pipeline

## Usage Examples

### Analyzing C Code

```bash
# Analyze a C project for complexity
pmat analyze complexity --path /path/to/c/project

# Generate deep context for a C file
pmat context --file /path/to/file.c

# Full project analysis with C language detection
pmat analyze --path /path/to/c/project
```

### Analyzing C++ Code

```bash
# Analyze a C++ project for complexity
pmat analyze complexity --path /path/to/cpp/project

# Generate deep context for a C++ file
pmat context --file /path/to/file.cpp

# Full project analysis with C++ language detection
pmat analyze --path /path/to/cpp/project
```

### Analyzing Kotlin Code

```bash
# Analyze a Kotlin project (with feature flag)
pmat analyze --path /path/to/kotlin/project --features kotlin-ast

# Generate deep context for a Kotlin file
pmat context --file /path/to/file.kt --features kotlin-ast

# Complexity analysis for Kotlin
pmat analyze complexity --path /path/to/kotlin/project --features kotlin-ast
```

## Compatibility

This release is fully backward compatible with existing PMAT functionality. All language analyzers continue to work as before, with the addition of C/C++ and Kotlin support.

## Roadmap

This release completes a significant part of our multi-language support roadmap. Future work will focus on:

1. Enhanced AST-based analysis for additional languages (Go, Ruby)
2. Deeper integration with semantic search capabilities
3. Cross-language dependency analysis
4. Further performance optimizations for large C/C++/Kotlin codebases
5. Advanced Kotlin coroutine flow analysis

## Contributors

- PAIML Team
- Sprint 49 Technical Debt Reduction Team (C/C++ Language Support)
- Sprint 50 Kotlin Integration Team

## Release Information

- **Version**: 2.171.1
- **Release Date**: October 27, 2025
- **Commit**: 98c35f36
- **Quality Status**: Production Ready
- **Previous Version**: 2.169.1 (October 21, 2025)