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Create app.py
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app.py
ADDED
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|
| 1 |
+
#!/usr/bin/env python3
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| 2 |
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"""
|
| 3 |
+
Code Flow Analyzer with Gradio Interface - Colab Compatible
|
| 4 |
+
A single-file application that uses LangChain agents to analyze code structure
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| 5 |
+
and generate Mermaid.js flowchart diagrams through a web interface.
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| 6 |
+
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| 7 |
+
For Google Colab:
|
| 8 |
+
1. Run this cell to install dependencies and start the app
|
| 9 |
+
2. Enter your GROQ_API_KEY when prompted
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| 10 |
+
3. The Gradio interface will appear inline
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| 11 |
+
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| 12 |
+
For local usage:
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| 13 |
+
1. Set your API key: export GROQ_API_KEY="your-key-here"
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| 14 |
+
2. Run: python code_flow_analyzer.py
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| 15 |
+
3. Open the provided URL in your browser
|
| 16 |
+
"""
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| 17 |
+
|
| 18 |
+
import ast
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| 19 |
+
import re
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| 20 |
+
import os
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| 21 |
+
import traceback
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| 22 |
+
import sys
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| 23 |
+
from typing import Dict, Any, List, Tuple
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| 24 |
+
import getpass
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| 25 |
+
|
| 26 |
+
# Check if running in Colab
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| 27 |
+
try:
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| 28 |
+
import google.colab
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| 29 |
+
IN_COLAB = True
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| 30 |
+
print("π’ Running in Google Colab")
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| 31 |
+
except ImportError:
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| 32 |
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IN_COLAB = False
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| 33 |
+
print("π‘ Running locally")
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| 34 |
+
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| 35 |
+
# Install dependencies if in Colab
|
| 36 |
+
if IN_COLAB:
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| 37 |
+
print("π¦ Installing dependencies...")
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| 38 |
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os.system("pip install -q gradio langchain langgraph langchain-groq")
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| 39 |
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print("β
Dependencies installed")
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| 40 |
+
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| 41 |
+
import gradio as gr
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| 42 |
+
from langchain.chat_models import init_chat_model
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| 43 |
+
from langchain.tools import tool
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| 44 |
+
from langgraph.prebuilt import create_react_agent
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| 45 |
+
from langgraph.checkpoint.memory import MemorySaver
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| 46 |
+
|
| 47 |
+
# Sample code examples
|
| 48 |
+
SAMPLE_PYTHON = '''def main():
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| 49 |
+
user_input = get_user_input()
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| 50 |
+
if user_input:
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| 51 |
+
result = process_data(user_input)
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| 52 |
+
if result > 0:
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| 53 |
+
display_result(result)
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| 54 |
+
else:
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| 55 |
+
show_error()
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| 56 |
+
else:
|
| 57 |
+
show_help()
|
| 58 |
+
|
| 59 |
+
def get_user_input():
|
| 60 |
+
return input("Enter data: ")
|
| 61 |
+
|
| 62 |
+
def process_data(data):
|
| 63 |
+
for i in range(len(data)):
|
| 64 |
+
if data[i].isdigit():
|
| 65 |
+
return int(data[i])
|
| 66 |
+
return -1
|
| 67 |
+
|
| 68 |
+
def display_result(result):
|
| 69 |
+
print(f"Result: {result}")
|
| 70 |
+
|
| 71 |
+
def show_error():
|
| 72 |
+
print("Error processing data")
|
| 73 |
+
|
| 74 |
+
def show_help():
|
| 75 |
+
print("Please provide valid input")'''
|
| 76 |
+
|
| 77 |
+
SAMPLE_JAVASCRIPT = '''function calculateTotal(items) {
|
| 78 |
+
let total = 0;
|
| 79 |
+
for (let item of items) {
|
| 80 |
+
if (item.price > 0) {
|
| 81 |
+
total += item.price;
|
| 82 |
+
}
|
| 83 |
+
}
|
| 84 |
+
return total;
|
| 85 |
+
}
|
| 86 |
+
|
| 87 |
+
function processOrder(order) {
|
| 88 |
+
if (validateOrder(order)) {
|
| 89 |
+
const total = calculateTotal(order.items);
|
| 90 |
+
if (total > 100) {
|
| 91 |
+
applyDiscount(order);
|
| 92 |
+
}
|
| 93 |
+
return generateReceipt(order);
|
| 94 |
+
} else {
|
| 95 |
+
throw new Error("Invalid order");
|
| 96 |
+
}
|
| 97 |
+
}
|
| 98 |
+
|
| 99 |
+
function validateOrder(order) {
|
| 100 |
+
return order && order.items && order.items.length > 0;
|
| 101 |
+
}
|
| 102 |
+
|
| 103 |
+
function applyDiscount(order) {
|
| 104 |
+
order.discount = 0.1; // 10% discount
|
| 105 |
+
}
|
| 106 |
+
|
| 107 |
+
function generateReceipt(order) {
|
| 108 |
+
return {
|
| 109 |
+
items: order.items,
|
| 110 |
+
total: calculateTotal(order.items),
|
| 111 |
+
timestamp: new Date()
|
| 112 |
+
};
|
| 113 |
+
}'''
|
| 114 |
+
|
| 115 |
+
SAMPLE_JAVA = '''public class Calculator {
|
| 116 |
+
public static void main(String[] args) {
|
| 117 |
+
Calculator calc = new Calculator();
|
| 118 |
+
int result = calc.performCalculation();
|
| 119 |
+
calc.displayResult(result);
|
| 120 |
+
}
|
| 121 |
+
|
| 122 |
+
public int performCalculation() {
|
| 123 |
+
int a = getUserInput();
|
| 124 |
+
int b = getUserInput();
|
| 125 |
+
|
| 126 |
+
if (a > b) {
|
| 127 |
+
return multiply(a, b);
|
| 128 |
+
} else {
|
| 129 |
+
return add(a, b);
|
| 130 |
+
}
|
| 131 |
+
}
|
| 132 |
+
|
| 133 |
+
private int add(int x, int y) {
|
| 134 |
+
return x + y;
|
| 135 |
+
}
|
| 136 |
+
|
| 137 |
+
private int multiply(int x, int y) {
|
| 138 |
+
return x * y;
|
| 139 |
+
}
|
| 140 |
+
|
| 141 |
+
private int getUserInput() {
|
| 142 |
+
return 5; // Simplified for demo
|
| 143 |
+
}
|
| 144 |
+
|
| 145 |
+
private void displayResult(int result) {
|
| 146 |
+
System.out.println("Result: " + result);
|
| 147 |
+
}
|
| 148 |
+
}'''
|
| 149 |
+
|
| 150 |
+
# Handle API key setup
|
| 151 |
+
def setup_api_key():
|
| 152 |
+
"""Setup API key for both Colab and local environments"""
|
| 153 |
+
api_key = os.getenv("GROQ_API_KEY")
|
| 154 |
+
|
| 155 |
+
if not api_key:
|
| 156 |
+
if IN_COLAB:
|
| 157 |
+
print("π Please enter your Groq API key:")
|
| 158 |
+
print(" Get a free key from: https://console.groq.com/")
|
| 159 |
+
api_key = getpass.getpass("GROQ_API_KEY: ")
|
| 160 |
+
if api_key:
|
| 161 |
+
os.environ["GROQ_API_KEY"] = api_key
|
| 162 |
+
print("β
API key set successfully")
|
| 163 |
+
else:
|
| 164 |
+
print("β οΈ No API key provided - agent features will be disabled")
|
| 165 |
+
else:
|
| 166 |
+
print("β οΈ GROQ_API_KEY not found in environment variables")
|
| 167 |
+
print(" Get a free API key from: https://console.groq.com/")
|
| 168 |
+
print(" Set it with: export GROQ_API_KEY='your-key-here'")
|
| 169 |
+
else:
|
| 170 |
+
print("β
Groq API key found")
|
| 171 |
+
|
| 172 |
+
return api_key or os.getenv("GROQ_API_KEY")
|
| 173 |
+
|
| 174 |
+
# Setup API key
|
| 175 |
+
api_key = setup_api_key()
|
| 176 |
+
|
| 177 |
+
# Initialize LangChain components
|
| 178 |
+
model = None
|
| 179 |
+
memory = None
|
| 180 |
+
agent_executor = None
|
| 181 |
+
|
| 182 |
+
if api_key:
|
| 183 |
+
try:
|
| 184 |
+
model = init_chat_model("groq:qwen2.5-32b-instruct")
|
| 185 |
+
memory = MemorySaver()
|
| 186 |
+
print("β
Groq model initialized successfully")
|
| 187 |
+
except Exception as e:
|
| 188 |
+
print(f"β Could not initialize LangChain model: {e}")
|
| 189 |
+
print(" Please check your API key and internet connection")
|
| 190 |
+
model = None
|
| 191 |
+
memory = None
|
| 192 |
+
|
| 193 |
+
@tool
|
| 194 |
+
def analyze_code_structure(source_code: str) -> Dict[str, Any]:
|
| 195 |
+
"""
|
| 196 |
+
Analyzes source code structure to identify functions, control flow, and dependencies.
|
| 197 |
+
Returns structured data about the code that can be used to generate flow diagrams.
|
| 198 |
+
"""
|
| 199 |
+
try:
|
| 200 |
+
# Try to parse as Python first
|
| 201 |
+
try:
|
| 202 |
+
tree = ast.parse(source_code)
|
| 203 |
+
return _analyze_python_ast(tree)
|
| 204 |
+
except SyntaxError:
|
| 205 |
+
# If Python parsing fails, do basic text analysis
|
| 206 |
+
return _analyze_code_text(source_code)
|
| 207 |
+
|
| 208 |
+
except Exception as e:
|
| 209 |
+
return {"error": f"Analysis error: {str(e)}"}
|
| 210 |
+
|
| 211 |
+
def _analyze_python_ast(tree) -> Dict[str, Any]:
|
| 212 |
+
"""Analyze Python AST"""
|
| 213 |
+
analysis = {
|
| 214 |
+
"functions": [],
|
| 215 |
+
"classes": [],
|
| 216 |
+
"control_flows": [],
|
| 217 |
+
"imports": [],
|
| 218 |
+
"call_graph": {}
|
| 219 |
+
}
|
| 220 |
+
|
| 221 |
+
class CodeAnalyzer(ast.NodeVisitor):
|
| 222 |
+
def __init__(self):
|
| 223 |
+
self.current_function = None
|
| 224 |
+
|
| 225 |
+
def visit_FunctionDef(self, node):
|
| 226 |
+
func_info = {
|
| 227 |
+
"name": node.name,
|
| 228 |
+
"line": node.lineno,
|
| 229 |
+
"args": [arg.arg for arg in node.args.args],
|
| 230 |
+
"calls": [],
|
| 231 |
+
"conditions": [],
|
| 232 |
+
"loops": []
|
| 233 |
+
}
|
| 234 |
+
|
| 235 |
+
self.current_function = node.name
|
| 236 |
+
analysis["call_graph"][node.name] = []
|
| 237 |
+
|
| 238 |
+
# Analyze function body
|
| 239 |
+
for child in ast.walk(node):
|
| 240 |
+
if isinstance(child, ast.Call):
|
| 241 |
+
if hasattr(child.func, 'id'):
|
| 242 |
+
func_info["calls"].append(child.func.id)
|
| 243 |
+
analysis["call_graph"][node.name].append(child.func.id)
|
| 244 |
+
elif hasattr(child.func, 'attr'):
|
| 245 |
+
func_info["calls"].append(child.func.attr)
|
| 246 |
+
elif isinstance(child, ast.If):
|
| 247 |
+
func_info["conditions"].append(f"if condition at line {child.lineno}")
|
| 248 |
+
elif isinstance(child, (ast.For, ast.While)):
|
| 249 |
+
loop_type = "for" if isinstance(child, ast.For) else "while"
|
| 250 |
+
func_info["loops"].append(f"{loop_type} loop at line {child.lineno}")
|
| 251 |
+
|
| 252 |
+
analysis["functions"].append(func_info)
|
| 253 |
+
self.generic_visit(node)
|
| 254 |
+
|
| 255 |
+
def visit_ClassDef(self, node):
|
| 256 |
+
class_info = {
|
| 257 |
+
"name": node.name,
|
| 258 |
+
"line": node.lineno,
|
| 259 |
+
"methods": []
|
| 260 |
+
}
|
| 261 |
+
|
| 262 |
+
for item in node.body:
|
| 263 |
+
if isinstance(item, ast.FunctionDef):
|
| 264 |
+
class_info["methods"].append(item.name)
|
| 265 |
+
|
| 266 |
+
analysis["classes"].append(class_info)
|
| 267 |
+
self.generic_visit(node)
|
| 268 |
+
|
| 269 |
+
def visit_Import(self, node):
|
| 270 |
+
for alias in node.names:
|
| 271 |
+
analysis["imports"].append(alias.name)
|
| 272 |
+
self.generic_visit(node)
|
| 273 |
+
|
| 274 |
+
def visit_ImportFrom(self, node):
|
| 275 |
+
module = node.module or ""
|
| 276 |
+
for alias in node.names:
|
| 277 |
+
analysis["imports"].append(f"{module}.{alias.name}")
|
| 278 |
+
self.generic_visit(node)
|
| 279 |
+
|
| 280 |
+
analyzer = CodeAnalyzer()
|
| 281 |
+
analyzer.visit(tree)
|
| 282 |
+
return analysis
|
| 283 |
+
|
| 284 |
+
def _analyze_code_text(source_code: str) -> Dict[str, Any]:
|
| 285 |
+
"""Basic text-based code analysis for non-Python code"""
|
| 286 |
+
lines = source_code.split('\n')
|
| 287 |
+
analysis = {
|
| 288 |
+
"functions": [],
|
| 289 |
+
"classes": [],
|
| 290 |
+
"control_flows": [],
|
| 291 |
+
"imports": [],
|
| 292 |
+
"call_graph": {}
|
| 293 |
+
}
|
| 294 |
+
|
| 295 |
+
for i, line in enumerate(lines, 1):
|
| 296 |
+
line = line.strip()
|
| 297 |
+
|
| 298 |
+
# JavaScript function detection
|
| 299 |
+
js_func_match = re.match(r'function\s+(\w+)\s*\(', line)
|
| 300 |
+
if js_func_match:
|
| 301 |
+
func_name = js_func_match.group(1)
|
| 302 |
+
analysis["functions"].append({
|
| 303 |
+
"name": func_name,
|
| 304 |
+
"line": i,
|
| 305 |
+
"args": [],
|
| 306 |
+
"calls": [],
|
| 307 |
+
"conditions": [],
|
| 308 |
+
"loops": []
|
| 309 |
+
})
|
| 310 |
+
analysis["call_graph"][func_name] = []
|
| 311 |
+
|
| 312 |
+
# Java/C++ method detection
|
| 313 |
+
java_method_match = re.match(r'(?:public|private|protected)?\s*(?:static)?\s*\w+\s+(\w+)\s*\(', line)
|
| 314 |
+
if java_method_match and not js_func_match:
|
| 315 |
+
func_name = java_method_match.group(1)
|
| 316 |
+
if func_name not in ['class', 'if', 'for', 'while']: # Avoid keywords
|
| 317 |
+
analysis["functions"].append({
|
| 318 |
+
"name": func_name,
|
| 319 |
+
"line": i,
|
| 320 |
+
"args": [],
|
| 321 |
+
"calls": [],
|
| 322 |
+
"conditions": [],
|
| 323 |
+
"loops": []
|
| 324 |
+
})
|
| 325 |
+
analysis["call_graph"][func_name] = []
|
| 326 |
+
|
| 327 |
+
# Control structures
|
| 328 |
+
if re.match(r'\s*(if|else|elif|switch)\s*[\(\{]', line):
|
| 329 |
+
analysis["control_flows"].append(f"condition at line {i}")
|
| 330 |
+
|
| 331 |
+
if re.match(r'\s*(for|while|do)\s*[\(\{]', line):
|
| 332 |
+
analysis["control_flows"].append(f"loop at line {i}")
|
| 333 |
+
|
| 334 |
+
return analysis
|
| 335 |
+
|
| 336 |
+
@tool
|
| 337 |
+
def generate_mermaid_diagram(analysis_data: Dict[str, Any]) -> str:
|
| 338 |
+
"""
|
| 339 |
+
Generates a Mermaid.js flowchart diagram from code analysis data.
|
| 340 |
+
Creates a visual representation of the code flow including function calls and control structures.
|
| 341 |
+
"""
|
| 342 |
+
if "error" in analysis_data:
|
| 343 |
+
return f"flowchart TD\n Error[β {analysis_data['error']}]"
|
| 344 |
+
|
| 345 |
+
functions = analysis_data.get("functions", [])
|
| 346 |
+
call_graph = analysis_data.get("call_graph", {})
|
| 347 |
+
|
| 348 |
+
if not functions:
|
| 349 |
+
return """flowchart TD
|
| 350 |
+
Start([π Program Start]) --> NoFunc[No Functions Found]
|
| 351 |
+
NoFunc --> End([π Program End])
|
| 352 |
+
|
| 353 |
+
classDef startEnd fill:#e1f5fe,stroke:#01579b,stroke-width:2px
|
| 354 |
+
classDef warning fill:#fff3e0,stroke:#e65100,stroke-width:2px
|
| 355 |
+
|
| 356 |
+
class Start,End startEnd
|
| 357 |
+
class NoFunc warning"""
|
| 358 |
+
|
| 359 |
+
mermaid_lines = ["flowchart TD"]
|
| 360 |
+
mermaid_lines.append(" Start([π Program Start]) --> Main")
|
| 361 |
+
|
| 362 |
+
# Create nodes for each function
|
| 363 |
+
func_nodes = []
|
| 364 |
+
for i, func in enumerate(functions):
|
| 365 |
+
func_name = func["name"]
|
| 366 |
+
safe_name = re.sub(r'[^a-zA-Z0-9_]', '_', func_name)
|
| 367 |
+
node_id = f"F{i}_{safe_name}"
|
| 368 |
+
func_nodes.append(node_id)
|
| 369 |
+
|
| 370 |
+
# Function node with emoji
|
| 371 |
+
mermaid_lines.append(f" {node_id}[βοΈ {func_name}()]")
|
| 372 |
+
|
| 373 |
+
# Add control structures within function
|
| 374 |
+
conditions = func.get("conditions", [])
|
| 375 |
+
loops = func.get("loops", [])
|
| 376 |
+
|
| 377 |
+
if conditions:
|
| 378 |
+
for j, condition in enumerate(conditions[:2]): # Limit to 2 conditions per function
|
| 379 |
+
cond_id = f"{node_id}_C{j}"
|
| 380 |
+
mermaid_lines.append(f" {node_id} --> {cond_id}{{π€ Decision}}")
|
| 381 |
+
mermaid_lines.append(f" {cond_id} -->|Yes| {node_id}_Y{j}[β
True Path]")
|
| 382 |
+
mermaid_lines.append(f" {cond_id} -->|No| {node_id}_N{j}[β False Path]")
|
| 383 |
+
|
| 384 |
+
if loops:
|
| 385 |
+
for j, loop in enumerate(loops[:1]): # Limit to 1 loop per function
|
| 386 |
+
loop_id = f"{node_id}_L{j}"
|
| 387 |
+
loop_type = "π Loop" if "for" in loop else "β° While Loop"
|
| 388 |
+
mermaid_lines.append(f" {node_id} --> {loop_id}[{loop_type}]")
|
| 389 |
+
mermaid_lines.append(f" {loop_id} --> {loop_id}") # Self-loop
|
| 390 |
+
|
| 391 |
+
# Connect main flow
|
| 392 |
+
if func_nodes:
|
| 393 |
+
mermaid_lines.append(f" Main --> {func_nodes[0]}")
|
| 394 |
+
|
| 395 |
+
# Connect functions in sequence (simplified)
|
| 396 |
+
for i in range(len(func_nodes) - 1):
|
| 397 |
+
mermaid_lines.append(f" {func_nodes[i]} --> {func_nodes[i + 1]}")
|
| 398 |
+
|
| 399 |
+
# Connect to end
|
| 400 |
+
mermaid_lines.append(f" {func_nodes[-1]} --> End([π Program End])")
|
| 401 |
+
|
| 402 |
+
# Add function call relationships (simplified to avoid clutter)
|
| 403 |
+
call_count = 0
|
| 404 |
+
for caller, callees in call_graph.items():
|
| 405 |
+
if call_count >= 3: # Limit number of call relationships
|
| 406 |
+
break
|
| 407 |
+
caller_node = None
|
| 408 |
+
for node in func_nodes:
|
| 409 |
+
if caller.lower() in node.lower():
|
| 410 |
+
caller_node = node
|
| 411 |
+
break
|
| 412 |
+
|
| 413 |
+
if caller_node:
|
| 414 |
+
for callee in callees[:2]: # Limit callees per function
|
| 415 |
+
callee_node = None
|
| 416 |
+
for node in func_nodes:
|
| 417 |
+
if callee.lower() in node.lower():
|
| 418 |
+
callee_node = node
|
| 419 |
+
break
|
| 420 |
+
if callee_node and callee_node != caller_node:
|
| 421 |
+
mermaid_lines.append(f" {caller_node} -.->|calls| {callee_node}")
|
| 422 |
+
call_count += 1
|
| 423 |
+
|
| 424 |
+
# Add styling
|
| 425 |
+
mermaid_lines.extend([
|
| 426 |
+
"",
|
| 427 |
+
" classDef startEnd fill:#e1f5fe,stroke:#01579b,stroke-width:3px,color:#000",
|
| 428 |
+
" classDef process fill:#f3e5f5,stroke:#4a148c,stroke-width:2px,color:#000",
|
| 429 |
+
" classDef decision fill:#fff3e0,stroke:#e65100,stroke-width:2px,color:#000",
|
| 430 |
+
" classDef success fill:#e8f5e8,stroke:#2e7d32,stroke-width:2px,color:#000",
|
| 431 |
+
" classDef error fill:#ffebee,stroke:#c62828,stroke-width:2px,color:#000",
|
| 432 |
+
"",
|
| 433 |
+
" class Start,End startEnd",
|
| 434 |
+
f" class {','.join(func_nodes)} process" if func_nodes else ""
|
| 435 |
+
])
|
| 436 |
+
|
| 437 |
+
return "\n".join(mermaid_lines)
|
| 438 |
+
|
| 439 |
+
@tool
|
| 440 |
+
def calculate_complexity_score(analysis_data: Dict[str, Any]) -> int:
|
| 441 |
+
"""
|
| 442 |
+
Calculates a complexity score for the code based on various metrics.
|
| 443 |
+
Higher scores indicate more complex code structure.
|
| 444 |
+
"""
|
| 445 |
+
if "error" in analysis_data:
|
| 446 |
+
return 0
|
| 447 |
+
|
| 448 |
+
score = 0
|
| 449 |
+
functions = analysis_data.get("functions", [])
|
| 450 |
+
|
| 451 |
+
# Base score for number of functions
|
| 452 |
+
score += len(functions) * 3
|
| 453 |
+
|
| 454 |
+
# Add score for control structures
|
| 455 |
+
for func in functions:
|
| 456 |
+
score += len(func.get("conditions", [])) * 4 # Conditions add complexity
|
| 457 |
+
score += len(func.get("loops", [])) * 3 # Loops add complexity
|
| 458 |
+
score += len(func.get("calls", [])) * 1 # Function calls add some complexity
|
| 459 |
+
score += len(func.get("args", [])) * 1 # Parameters add complexity
|
| 460 |
+
|
| 461 |
+
# Add score for classes
|
| 462 |
+
score += len(analysis_data.get("classes", [])) * 5
|
| 463 |
+
|
| 464 |
+
return min(score, 100) # Cap at 100
|
| 465 |
+
|
| 466 |
+
# Create the agent if model is available
|
| 467 |
+
if model and memory:
|
| 468 |
+
tools = [analyze_code_structure, generate_mermaid_diagram, calculate_complexity_score]
|
| 469 |
+
agent_executor = create_react_agent(model, tools, checkpointer=memory)
|
| 470 |
+
print("β
LangChain agent created successfully")
|
| 471 |
+
else:
|
| 472 |
+
agent_executor = None
|
| 473 |
+
print("β LangChain agent not available")
|
| 474 |
+
|
| 475 |
+
def analyze_code_with_agent(source_code: str, language: str = "auto") -> Tuple[str, str, List[str], int, str]:
|
| 476 |
+
"""
|
| 477 |
+
Main function that uses the LangChain agent to analyze code and generate diagrams.
|
| 478 |
+
Returns: (mermaid_diagram, analysis_summary, functions_found, complexity_score, error_message)
|
| 479 |
+
"""
|
| 480 |
+
if not source_code.strip():
|
| 481 |
+
return "", "No code provided", [], 0, "Please enter some source code to analyze"
|
| 482 |
+
|
| 483 |
+
if not agent_executor:
|
| 484 |
+
return "", "Agent not available", [], 0, "β LangChain agent not initialized. Please check your GROQ_API_KEY"
|
| 485 |
+
|
| 486 |
+
try:
|
| 487 |
+
# Detect language if auto
|
| 488 |
+
if language == "auto":
|
| 489 |
+
if "def " in source_code or "import " in source_code:
|
| 490 |
+
language = "Python"
|
| 491 |
+
elif "function " in source_code or "const " in source_code or "let " in source_code:
|
| 492 |
+
language = "JavaScript"
|
| 493 |
+
elif ("public " in source_code and "class " in source_code) or "System.out" in source_code:
|
| 494 |
+
language = "Java"
|
| 495 |
+
elif "#include" in source_code or "std::" in source_code:
|
| 496 |
+
language = "C++"
|
| 497 |
+
else:
|
| 498 |
+
language = "Unknown"
|
| 499 |
+
|
| 500 |
+
config = {"configurable": {"thread_id": f"session_{hash(source_code) % 10000}"}}
|
| 501 |
+
|
| 502 |
+
prompt = f"""
|
| 503 |
+
You are a code analysis expert. Analyze the following {language} source code and create a visual flow diagram.
|
| 504 |
+
|
| 505 |
+
Code to analyze:
|
| 506 |
+
```{language.lower()}
|
| 507 |
+
{source_code}
|
| 508 |
+
```
|
| 509 |
+
|
| 510 |
+
Please follow these steps exactly:
|
| 511 |
+
1. First use the analyze_code_structure tool to understand the code structure
|
| 512 |
+
2. Then use the generate_mermaid_diagram tool to create a flowchart
|
| 513 |
+
3. Use the calculate_complexity_score tool to assess code complexity
|
| 514 |
+
4. Provide a brief summary of what the code does and its structure
|
| 515 |
+
|
| 516 |
+
Important guidelines:
|
| 517 |
+
- Focus on the main flow between functions and important control structures
|
| 518 |
+
- Keep the diagram clean and readable
|
| 519 |
+
- Identify all functions and their relationships
|
| 520 |
+
- Note any loops, conditionals, and function calls
|
| 521 |
+
- Provide insights about code organization and complexity
|
| 522 |
+
|
| 523 |
+
Please be thorough in your analysis and make sure to use all three tools in order.
|
| 524 |
+
"""
|
| 525 |
+
|
| 526 |
+
# Execute the agent
|
| 527 |
+
result = agent_executor.invoke(
|
| 528 |
+
{"messages": [{"role": "user", "content": prompt}]},
|
| 529 |
+
config
|
| 530 |
+
)
|
| 531 |
+
|
| 532 |
+
if result and "messages" in result:
|
| 533 |
+
response = result["messages"][-1].content
|
| 534 |
+
|
| 535 |
+
# Extract Mermaid diagram
|
| 536 |
+
mermaid_match = re.search(r'```mermaid\n(.*?)\n```', response, re.DOTALL)
|
| 537 |
+
if not mermaid_match:
|
| 538 |
+
mermaid_match = re.search(r'flowchart TD.*?(?=\n\n|\Z)', response, re.DOTALL)
|
| 539 |
+
|
| 540 |
+
mermaid_diagram = mermaid_match.group(1) if mermaid_match else mermaid_match.group(0) if mermaid_match else ""
|
| 541 |
+
|
| 542 |
+
# If no mermaid found in response, try to generate directly
|
| 543 |
+
if not mermaid_diagram:
|
| 544 |
+
print("β οΈ No Mermaid diagram found in response, generating fallback...")
|
| 545 |
+
# Fallback: analyze directly
|
| 546 |
+
analysis_result = analyze_code_structure.invoke({"source_code": source_code})
|
| 547 |
+
mermaid_diagram = generate_mermaid_diagram.invoke({"analysis_data": analysis_result})
|
| 548 |
+
|
| 549 |
+
# Extract complexity score
|
| 550 |
+
complexity_match = re.search(r'complexity.*?(\d+)', response, re.IGNORECASE)
|
| 551 |
+
complexity_score = int(complexity_match.group(1)) if complexity_match else 1
|
| 552 |
+
|
| 553 |
+
# Extract functions
|
| 554 |
+
functions_found = []
|
| 555 |
+
func_matches = re.findall(r'Functions found:.*?([^\n]+)', response, re.IGNORECASE)
|
| 556 |
+
if func_matches:
|
| 557 |
+
functions_found = [f.strip() for f in func_matches[0].split(',')]
|
| 558 |
+
else:
|
| 559 |
+
# Fallback: extract from analysis
|
| 560 |
+
analysis_result = analyze_code_structure.invoke({"source_code": source_code})
|
| 561 |
+
functions_found = [f["name"] for f in analysis_result.get("functions", [])]
|
| 562 |
+
|
| 563 |
+
# Clean up the response for summary
|
| 564 |
+
summary = re.sub(r'```mermaid.*?```', '', response, flags=re.DOTALL)
|
| 565 |
+
summary = re.sub(r'flowchart TD.*?(?=\n\n|\Z)', '', summary, flags=re.DOTALL)
|
| 566 |
+
summary = summary.strip()
|
| 567 |
+
|
| 568 |
+
return mermaid_diagram, summary, functions_found, complexity_score, ""
|
| 569 |
+
|
| 570 |
+
except Exception as e:
|
| 571 |
+
error_msg = f"β Analysis failed: {str(e)}"
|
| 572 |
+
print(f"Error details: {traceback.format_exc()}") # For debugging
|
| 573 |
+
return "", "", [], 0, error_msg
|
| 574 |
+
|
| 575 |
+
def create_gradio_interface():
|
| 576 |
+
"""Create and configure the Gradio interface"""
|
| 577 |
+
|
| 578 |
+
def analyze_code_gradio(code, language):
|
| 579 |
+
"""Wrapper function for Gradio interface"""
|
| 580 |
+
if not code.strip():
|
| 581 |
+
return (
|
| 582 |
+
"Please enter some code to analyze",
|
| 583 |
+
"",
|
| 584 |
+
"No analysis performed",
|
| 585 |
+
"Functions: 0 | Complexity: 0/100",
|
| 586 |
+
""
|
| 587 |
+
)
|
| 588 |
+
|
| 589 |
+
mermaid, summary, functions, complexity, error = analyze_code_with_agent(code, language)
|
| 590 |
+
|
| 591 |
+
if error:
|
| 592 |
+
return (
|
| 593 |
+
error,
|
| 594 |
+
"",
|
| 595 |
+
"Analysis failed",
|
| 596 |
+
"Functions: 0 | Complexity: 0/100",
|
| 597 |
+
""
|
| 598 |
+
)
|
| 599 |
+
|
| 600 |
+
# Format the outputs
|
| 601 |
+
mermaid_display = f"```mermaid\n{mermaid}\n```" if mermaid else "No diagram generated"
|
| 602 |
+
functions_display = f"**Functions Found:** {', '.join(functions)}" if functions else "No functions detected"
|
| 603 |
+
stats_display = f"Functions: {len(functions)} | Complexity: {complexity}/100"
|
| 604 |
+
|
| 605 |
+
return (
|
| 606 |
+
"β
Analysis completed successfully!",
|
| 607 |
+
mermaid_display,
|
| 608 |
+
summary,
|
| 609 |
+
stats_display,
|
| 610 |
+
functions_display
|
| 611 |
+
)
|
| 612 |
+
|
| 613 |
+
# Define the interface
|
| 614 |
+
with gr.Blocks(
|
| 615 |
+
title="π Code Flow Analyzer",
|
| 616 |
+
theme=gr.themes.Soft(),
|
| 617 |
+
css="""
|
| 618 |
+
.gradio-container {
|
| 619 |
+
max-width: 1200px !important;
|
| 620 |
+
}
|
| 621 |
+
.code-input {
|
| 622 |
+
font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace !important;
|
| 623 |
+
}
|
| 624 |
+
"""
|
| 625 |
+
) as interface:
|
| 626 |
+
|
| 627 |
+
gr.Markdown("""
|
| 628 |
+
# π Code Flow Analyzer
|
| 629 |
+
|
| 630 |
+
**LangChain Agent + Mermaid.js** β’ Visualize Your Code Flow
|
| 631 |
+
|
| 632 |
+
This tool uses AI agents to analyze your source code and generate visual flowchart diagrams.
|
| 633 |
+
""")
|
| 634 |
+
|
| 635 |
+
# API Status
|
| 636 |
+
api_status = "π’ Groq LangChain Agent Ready (Qwen 2.5-32B)" if agent_executor else "π΄ Agent Not Available (Check GROQ_API_KEY)"
|
| 637 |
+
gr.Markdown(f"**Status:** {api_status}")
|
| 638 |
+
|
| 639 |
+
with gr.Row():
|
| 640 |
+
with gr.Column(scale=1):
|
| 641 |
+
gr.Markdown("### π Source Code Input")
|
| 642 |
+
|
| 643 |
+
language_dropdown = gr.Dropdown(
|
| 644 |
+
choices=["auto", "Python", "JavaScript", "Java", "C++", "Other"],
|
| 645 |
+
value="auto",
|
| 646 |
+
label="Programming Language",
|
| 647 |
+
info="Auto-detection usually works well"
|
| 648 |
+
)
|
| 649 |
+
|
| 650 |
+
code_input = gr.TextArea(
|
| 651 |
+
placeholder="Paste your source code here...",
|
| 652 |
+
lines=15,
|
| 653 |
+
label="Source Code",
|
| 654 |
+
elem_classes=["code-input"]
|
| 655 |
+
)
|
| 656 |
+
|
| 657 |
+
with gr.Row():
|
| 658 |
+
gr.Examples(
|
| 659 |
+
examples=[
|
| 660 |
+
[SAMPLE_PYTHON, "Python"],
|
| 661 |
+
[SAMPLE_JAVASCRIPT, "JavaScript"],
|
| 662 |
+
[SAMPLE_JAVA, "Java"]
|
| 663 |
+
],
|
| 664 |
+
inputs=[code_input, language_dropdown],
|
| 665 |
+
label="Quick Examples"
|
| 666 |
+
)
|
| 667 |
+
|
| 668 |
+
analyze_btn = gr.Button(
|
| 669 |
+
"π Analyze Code Flow",
|
| 670 |
+
variant="primary",
|
| 671 |
+
size="lg"
|
| 672 |
+
)
|
| 673 |
+
|
| 674 |
+
with gr.Column(scale=1):
|
| 675 |
+
gr.Markdown("### π Analysis Results")
|
| 676 |
+
|
| 677 |
+
status_output = gr.Textbox(
|
| 678 |
+
label="Status",
|
| 679 |
+
interactive=False
|
| 680 |
+
)
|
| 681 |
+
|
| 682 |
+
stats_output = gr.Textbox(
|
| 683 |
+
label="Statistics",
|
| 684 |
+
interactive=False
|
| 685 |
+
)
|
| 686 |
+
|
| 687 |
+
functions_output = gr.Markdown(
|
| 688 |
+
label="Functions Found"
|
| 689 |
+
)
|
| 690 |
+
|
| 691 |
+
with gr.Row():
|
| 692 |
+
with gr.Column():
|
| 693 |
+
gr.Markdown("### π¨ Generated Mermaid Diagram")
|
| 694 |
+
mermaid_output = gr.Textbox(
|
| 695 |
+
label="Mermaid Code",
|
| 696 |
+
lines=15,
|
| 697 |
+
max_lines=20,
|
| 698 |
+
interactive=True,
|
| 699 |
+
show_copy_button=True
|
| 700 |
+
)
|
| 701 |
+
|
| 702 |
+
gr.Markdown("""
|
| 703 |
+
**π‘ How to visualize:**
|
| 704 |
+
1. Copy the Mermaid code above
|
| 705 |
+
2. Visit [mermaid.live](https://mermaid.live)
|
| 706 |
+
3. Paste and see your code flow diagram!
|
| 707 |
+
|
| 708 |
+
**π± For Colab users:**
|
| 709 |
+
- The Mermaid code above shows your program's flow structure
|
| 710 |
+
- Copy it to mermaid.live for a beautiful visual diagram
|
| 711 |
+
- Try the examples above to see different code patterns
|
| 712 |
+
""")
|
| 713 |
+
|
| 714 |
+
with gr.Row():
|
| 715 |
+
with gr.Column():
|
| 716 |
+
gr.Markdown("### π Analysis Summary")
|
| 717 |
+
summary_output = gr.Textbox(
|
| 718 |
+
label="AI Agent Analysis",
|
| 719 |
+
lines=8,
|
| 720 |
+
interactive=False
|
| 721 |
+
)
|
| 722 |
+
|
| 723 |
+
# Connect the analyze button
|
| 724 |
+
analyze_btn.click(
|
| 725 |
+
fn=analyze_code_gradio,
|
| 726 |
+
inputs=[code_input, language_dropdown],
|
| 727 |
+
outputs=[status_output, mermaid_output, summary_output, stats_output, functions_output]
|
| 728 |
+
)
|
| 729 |
+
|
| 730 |
+
# Footer
|
| 731 |
+
environment_info = "Google Colab" if IN_COLAB else "Local Environment"
|
| 732 |
+
gr.Markdown(f"""
|
| 733 |
+
---
|
| 734 |
+
**π οΈ Running in:** {environment_info}
|
| 735 |
+
|
| 736 |
+
**π¦ Dependencies:** gradio, langchain, langgraph, langchain-groq
|
| 737 |
+
|
| 738 |
+
**π§ Powered by:** LangChain Agents, Groq API (Qwen 2.5-32B), Mermaid.js, Gradio
|
| 739 |
+
|
| 740 |
+
**π Get Groq API Key:** [console.groq.com](https://console.groq.com/) (Free tier available!)
|
| 741 |
+
""")
|
| 742 |
+
|
| 743 |
+
return interface
|
| 744 |
+
|
| 745 |
+
def main():
|
| 746 |
+
"""Main function to run the application"""
|
| 747 |
+
print("π Code Flow Analyzer with Gradio")
|
| 748 |
+
print("=" * 50)
|
| 749 |
+
print(f"π Environment: {'Google Colab' if IN_COLAB else 'Local'}")
|
| 750 |
+
|
| 751 |
+
if agent_executor:
|
| 752 |
+
print("β
LangChain agent ready")
|
| 753 |
+
else:
|
| 754 |
+
print("β LangChain agent not available")
|
| 755 |
+
if IN_COLAB:
|
| 756 |
+
print(" π‘ Restart this cell and enter your GROQ_API_KEY when prompted")
|
| 757 |
+
|
| 758 |
+
print("\nπ Starting Gradio interface...")
|
| 759 |
+
|
| 760 |
+
# Create and launch the interface
|
| 761 |
+
interface = create_gradio_interface()
|
| 762 |
+
|
| 763 |
+
# Launch configuration for Colab vs local
|
| 764 |
+
if IN_COLAB:
|
| 765 |
+
# For Colab, use public sharing and specific settings
|
| 766 |
+
interface.launch(
|
| 767 |
+
share=True, # Enable public sharing for Colab
|
| 768 |
+
debug=False,
|
| 769 |
+
height=600,
|
| 770 |
+
show_error=True
|
| 771 |
+
)
|
| 772 |
+
else:
|
| 773 |
+
# For local usage
|
| 774 |
+
interface.launch(
|
| 775 |
+
server_name="0.0.0.0",
|
| 776 |
+
server_port=7860,
|
| 777 |
+
share=False, # Disable sharing for local use
|
| 778 |
+
debug=False
|
| 779 |
+
)
|
| 780 |
+
|
| 781 |
+
# Auto-run if in Colab or when script is executed directly
|
| 782 |
+
if __name__ == "__main__" or IN_COLAB:
|
| 783 |
+
main()
|