02_ast_comparison

AST Comparison Example

Overview

This example demonstrates vallm's Abstract Syntax Tree (AST) comparison and structural analysis capabilities.

What it Tests

• Tree-sitter parsing: Multi-language code parsing and analysis
• Python AST normalization: Standardizing Python AST structures for comparison
• Similarity scoring: Computing structural similarity between code snippets
• Structural diff analysis: Identifying differences between code versions

Code Samples

The example analyzes several code implementations:

1. Python functions - add() vs sum_values() (semantically similar)
2. Different implementations - add() vs multiply() (semantically different)
3. Multi-language examples - JavaScript and C code for comparison

Running the Example

cd 02_ast_comparison
python main.py

Expected Output

• AST similarity scores between code pairs
• Tree-sitter node counts and error counts
• Structural diff summaries showing added/removed node types

Analysis Data

After running, analysis results will be saved in the .vallm/ folder within this directory, including:

• AST comparison reports
• Similarity matrices
• Structural diff details
• Multi-language parsing results