FlowGuard - Multi-Language Code Structure Analyzer ✅ WORKING

Part of the Guard8.ai ecosystem, FlowGuard provides comprehensive code structure analysis for 19 programming languages using tree-sitter parsing with a modern modular architecture.

🚀 Quick Start

Prerequisites

Git
Node.js and npm (for tree-sitter CLI)
Bash shell

Basic Setup (3 Steps)

# 1. Clone the repository
git clone https://github.com/Guard8-ai/FlowGuard.git
cd FlowGuard

# 2. Run the installer (interactive mode)
./install.sh

# 3. Analyze your first file
./flowguard.sh src/main.rs      # Local installation

Advanced: System-wide Installation (Recommended)

# Install FlowGuard globally (requires sudo)
sudo ./install.sh --system

# Now use from anywhere without path
flowguard app.py               # Works from any directory
flowguard script.js            # No ./flowguard.sh needed
flowguard --list-languages     # Show all 19 supported languages

Installation Options

# Interactive language selection (recommended)
./install.sh

# System-wide installation (requires sudo)
sudo ./install.sh --system

# Install all 19 languages at once
./install.sh --all

# Install specific languages only
./install.sh rust python javascript

# Install global Claude Code slash command (uses system flowguard if available)
./install.sh --claude-command

# Check what's already installed
./install.sh --installed

🌍 Supported Languages

Category	Languages	Syntax Elements
Systems	Rust, C, C++, Go	functions, structs, impls, namespaces
High-level	Python, JavaScript, TypeScript, Java, C#	functions, classes, methods, interfaces
Other Languages	PHP, Ruby, Swift, Scala, Haskell	functions, classes, modules
Web	HTML, CSS	elements, rules
Config/Data	JSON, TOML	objects, arrays, tables
Scripting	Bash	functions, statements

Total: 19 languages with embedded configuration

Enhanced Features ✅ PHASE 1 IMPLEMENTED

Enhanced Flow Diagrams: Language-specific diagrams with complexity ratings
Advanced Metrics: Cyclomatic/cognitive complexity with ratings (Simple/Moderate/Complex/Very Complex)
Call Graph Analysis: Function hierarchy with parameter types and dependencies
Parameter/Type Analysis: Function signatures with type information
Async/Await Detection: Cross-language async operation analysis
Memory Pattern Analysis: Smart pointer usage (Rust), allocation tracking (C/C++)
Error Handling Paths: Visual representation of exception handling flows

📁 Repository Structure

FlowGuard/
├── flowguard.sh                         # ✅ NEW: Modular multi-language analyzer (19 languages)
├── install.sh                           # ✅ NEW: Automated installation script
├── lib/                                 # ✅ ENHANCED: Modular components directory
│   ├── flowguard_config.sh             #   Language configuration and constants
│   ├── flowguard_utils.sh              #   Utility functions (logging, detection)
│   ├── flowguard_parser.sh             #   Enhanced parsing with async/memory analysis
│   ├── flowguard_extractors.sh         #   Enhanced extraction with parameters/types
│   ├── flowguard_diagrams.sh           #   Enhanced diagrams with complexity metrics
│   ├── flowguard_metrics.sh            #   ✅ NEW: Complexity calculations
│   └── flowguard_callgraph.sh          #   ✅ NEW: Call graph generation
├── language_config.yaml                # External language configuration
├── tree-sitter-*/                      # 19 installed language grammar directories
├── analyze_code_structure.sh           # Legacy: Rust-only analyzer
├── CLAUDE.md                           # Claude Code guidance
├── README.md                           # This file
└── flowguard_analysis/                 # Analysis output (created next to analyzed file)

🧪 Testing Status

✅ Successfully Tested - The script has been thoroughly tested by analyzing itself:

Language Detection: Correctly identified bash from file extension
Parse Tree Generation: 2065-line parse tree generated successfully
Function Detection: Found 16 function definitions accurately
Control Flow: Detected 6 for-statement loops
Complexity Analysis: 83 statements, 38 comments, 24 nesting levels
Output Generation: All 4 analysis files created with proper timestamps

Test Command: ./flowguard.sh flowguard.sh (modular version)

🔧 Features

Auto-Detection

Automatically detects programming language from file extension
Supports manual language override
Handles special files (Dockerfile, Makefile, etc.)

Language-Specific Analysis

Extracts functions, classes, interfaces, structs
Identifies control flow patterns
Analyzes complexity metrics
Generates comprehensive reports

Enhanced Output Files ✅ PHASE 1

For each analysis, generates 11 comprehensive report files in flowguard_analysis/ directory (created next to the analyzed file):

Core Analysis:

full_parse_tree_[filename]_[lang]_[timestamp].txt - Complete syntax tree
constructs_[filename]_[lang]_[timestamp].txt - Language-specific elements
control_flow_[filename]_[lang]_[timestamp].txt - Control flow analysis
summary_[filename]_[lang]_[timestamp].txt - Enhanced metrics and counts

Enhanced Phase 1 Features:

flow_diagram_[filename]_[lang]_[timestamp].txt - Enhanced execution flow with complexity
metrics_[filename]_[lang]_[timestamp].txt - ✅ NEW: Comprehensive complexity metrics
callgraph_[filename]_[lang]_[timestamp].txt - ✅ NEW: Call graph analysis with dependencies
comprehensive_diagram_[filename]_[lang]_[timestamp].txt - ✅ NEW: All-in-one enhanced diagram

Detailed Analysis:

parameters_[filename]_[lang]_[timestamp].txt - ✅ NEW: Function parameter analysis
return_types_[filename]_[lang]_[timestamp].txt - ✅ NEW: Return type analysis
async_patterns_[filename]_[lang]_[timestamp].txt - ✅ NEW: Async/await pattern detection

🛠️ Detailed Installation Guide

Prerequisites Check

# Check if you have the required tools
git --version           # Need: Git
node --version          # Need: Node.js v12+
npm --version           # Need: npm (comes with Node.js)

If missing any prerequisites:

Git: Install from https://git-scm.com/
Node.js: Install from https://nodejs.org/ (includes npm)

Installation Methods

Method 1: Interactive Installation (Easiest)

# Clone and enter directory
git clone https://github.com/Guard8-ai/FlowGuard.git
cd FlowGuard

# Run interactive installer
./install.sh

# Follow the menu to select languages

Method 2: Quick Installation (All Languages)

# Install everything at once
./install.sh --all

Method 3: System-wide Installation (Recommended for Regular Use)

# Install globally for all users
sudo ./install.sh --system

# Verify installation
flowguard --version
flowguard --list-languages

Method 4: Custom Language Selection

# Install only specific languages you need
./install.sh rust python javascript go

# Add more languages later
./install.sh java typescript cpp

Special Features

# Install Claude Code slash command
./install.sh --claude-command

# Check what's already installed
./install.sh --installed

# Get help
./install.sh --help

What the Installer Does

The installation script automatically:

✅ Checks and installs tree-sitter CLI via npm
✅ Downloads only requested language grammars from GitHub
✅ Provides interactive language selection menu
✅ Optionally installs system-wide at /usr/local/bin/flowguard
✅ Sets up Claude Code integration with automatic fallback
✅ Validates existing installations
✅ Handles all dependencies and setup

Manual Installation (Advanced Users Only)

# 1. Install tree-sitter CLI
npm install -g tree-sitter-cli

# 2. Clone specific grammar repositories
git clone https://github.com/tree-sitter/tree-sitter-rust tree-sitter-rust
git clone https://github.com/tree-sitter/tree-sitter-python tree-sitter-python
# ... repeat for each language needed

# 3. Verify installation
./flowguard.sh --list-languages

Note: Manual installation requires cloning each grammar repository individually. The install.sh script automates this process.

📖 Usage Examples

First Time Use

# After installation, analyze your first file
./flowguard.sh examples/hello.py    # Local installation
flowguard examples/hello.py         # System-wide installation

# View the generated analysis
ls flowguard_analysis/              # See all output files
cat flowguard_analysis/summary_*.txt # View summary

Basic Analysis ✅ TESTED

# Auto-detect language from file extension
flowguard src/main.py               # Python
flowguard app.js                    # JavaScript
flowguard main.go                   # Go
flowguard Main.java                 # Java

# Or use local installation
./flowguard.sh src/main.py

# Example output:
# [LANGUAGE] Auto-detected language: python
# [SUCCESS] Enhanced analysis complete for python! Generated files:
#   CORE ANALYSIS:
#   - Parse tree: src/flowguard_analysis/full_parse_tree_main_python_20250915_163000.txt
#   - Language constructs: src/flowguard_analysis/constructs_main_python_20250915_163000.txt
#   - Control flow: src/flowguard_analysis/control_flow_main_python_20250915_163000.txt
#   - Summary: src/flowguard_analysis/summary_main_python_20250915_163000.txt
#   ENHANCED PHASE 1 FEATURES:
#   - Enhanced flow diagram: src/flowguard_analysis/flow_diagram_main_python_20250915_163000.txt
#   - Complexity metrics: src/flowguard_analysis/metrics_main_python_20250915_163000.txt
#   - Call graph analysis: src/flowguard_analysis/callgraph_main_python_20250915_163000.txt
#   - Comprehensive diagram: src/flowguard_analysis/comprehensive_diagram_main_python_20250915_163000.txt
#   And 3 additional detailed analysis files...

Force Language

# Analyze file with specific language (system-wide)
flowguard config.txt yaml
flowguard script typescript

# Or local installation
./flowguard.sh config.txt yaml
./flowguard.sh script typescript

Get Information

# Show supported languages and extensions (system-wide)
flowguard --list-languages

# Show help
flowguard --help

# Or local installation
./flowguard.sh --list-languages
./flowguard.sh --help

Claude Code Integration

# After installing with ./install.sh --claude-command
# Use in any Claude Code conversation
/flowguard src/app.js

🎯 Use Cases ✅ WORKING

Code Analysis

✅ Understand codebase structure (modular architecture with lib/ components)
✅ Identify complexity hotspots (function analysis across 19 languages)
✅ Extract API signatures (function definitions, classes, interfaces)
✅ Generate documentation (comprehensive reports with metrics)

Guard8.ai Integration

✅ Supports HalluciGuard development (modular script architecture)
✅ Analyzes Guard8.ai tool projects (19 languages supported)
✅ Provides cross-language insights (unified analysis approach)
✅ Enables comprehensive auditing (detailed parse trees and summaries)

Development Workflow

✅ Easy installation (automated install.sh script)
✅ Pre-commit analysis (fast analysis with timestamped output)
✅ Code review assistance (constructs and control flow extraction)
✅ Refactoring planning (complexity indicators and nesting depth)
✅ Architecture documentation (automated reporting)

🔗 Related Projects

HalluciGuard - AI hallucination detection system
Guard8.ai Ecosystem - Security and AI monitoring tools

🤝 Contributing

This tool is part of the Guard8.ai ecosystem. For contributions or issues, please follow the Guard8.ai development guidelines.

📄 License

Proprietary - Guard8.ai

Guard8.ai FlowGuard - Comprehensive multi-language code structure analysis powered by tree-sitter.

Name		Name	Last commit message	Last commit date
Latest commit History 2 Commits
lib		lib
.gitignore		.gitignore
FlowGuard_Technical_Documentation.md		FlowGuard_Technical_Documentation.md
README.md		README.md
analyze_code_structure.sh		analyze_code_structure.sh
flowguard.sh		flowguard.sh
install.sh		install.sh
language_config.yaml		language_config.yaml
phase1_enhanced_diagrams.md		phase1_enhanced_diagrams.md
phase2_output_consolidation.md		phase2_output_consolidation.md
phase3_project_analysis.md		phase3_project_analysis.md
phase4_rust_migration.md		phase4_rust_migration.md

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Latest commit

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FlowGuard - Multi-Language Code Structure Analyzer ✅ WORKING

🚀 Quick Start

Prerequisites

Basic Setup (3 Steps)

Advanced: System-wide Installation (Recommended)

Installation Options

🌍 Supported Languages

Enhanced Features ✅ PHASE 1 IMPLEMENTED

📁 Repository Structure

🧪 Testing Status

🔧 Features

Auto-Detection

Language-Specific Analysis

Enhanced Output Files ✅ PHASE 1

🛠️ Detailed Installation Guide

Prerequisites Check

Installation Methods

Method 1: Interactive Installation (Easiest)

Method 2: Quick Installation (All Languages)

Method 3: System-wide Installation (Recommended for Regular Use)

Method 4: Custom Language Selection

Special Features

What the Installer Does

Manual Installation (Advanced Users Only)

📖 Usage Examples

First Time Use

Basic Analysis ✅ TESTED

Force Language

Get Information

Claude Code Integration

🎯 Use Cases ✅ WORKING

Code Analysis

Guard8.ai Integration

Development Workflow

🔗 Related Projects

🤝 Contributing

📄 License

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