tmcfarlane/oh-my-cursor/exploring-codebases

Exploring Codebases

Hybrid search tool that combines the speed of ripgrep with structural awareness from tree-sitter or pre-generated _MAP.md files. It finds matches and returns the entire function or class containing the match, de-duplicating results semantically.

Progressive Disclosure

By default, returns signatures only (docstrings + declarations without function bodies), reducing token usage by 10-20x. Use --expand-full to get complete implementations when needed.

Installation

uv venv /home/claude/.venv
# tree-sitter is optional if using --use-maps mode
uv pip install tree-sitter-language-pack --python /home/claude/.venv/bin/python

Usage

# Default: signatures only with tree-sitter (efficient)
/home/claude/.venv/bin/python /mnt/skills/user/exploring-codebases/scripts/search.py "query" /path/to/repo
 
# Full implementations
/home/claude/.venv/bin/python /mnt/skills/user/exploring-codebases/scripts/search.py "query" /path/to/repo --expand-full
 
# Map-based mode: no tree-sitter required (#276)
# Requires _MAP.md files generated by mapping-codebases
/home/claude/.venv/bin/python /mnt/skills/user/exploring-codebases/scripts/search.py "query" /path/to/repo --use-maps

Options

• --glob pattern: Filter files (e.g., *.py, *.ts)
• --expand-full: Return full implementations instead of signatures
• --json: Output JSON for machine processing (default is Markdown)
• --use-maps: Use pre-generated _MAP.md files instead of tree-sitter for context expansion. Eliminates redundant tree-sitter parsing when maps already exist.

Map-Based Mode (v0.3.0)

When _MAP.md files exist (generated by mapping-codebases), use --use-maps to skip tree-sitter entirely:

1. mapping-codebases runs tree-sitter once to generate _MAP.md files with symbol locations
2. exploring-codebases --use-maps uses ripgrep + map data for context expansion
3. No redundant AST parsing at search time

Benefits:

• Single tree-sitter execution per codebase (during map generation)
• Faster searches (no AST parsing overhead)
• tree-sitter-language-pack not required at runtime
• Maps serve as canonical index for both navigation and search

Recommended workflow:

# Step 1: Generate maps (one-time, or after code changes)
python /mnt/skills/user/mapping-codebases/scripts/codemap.py /path/to/repo
 
# Step 2: Search using maps (fast, no tree-sitter needed)
python /mnt/skills/user/exploring-codebases/scripts/search.py "query" /path/to/repo --use-maps

Examples

Find class signatures:

/home/claude/.venv/bin/python /mnt/skills/user/exploring-codebases/scripts/search.py "class User" /path/to/repo

Output:

class User:
    """User account model."""
    ...

Find full method implementation:

/home/claude/.venv/bin/python /mnt/skills/user/exploring-codebases/scripts/search.py "def validate" /path/to/repo --expand-full

Find usage of `process_data` in Python files:

/home/claude/.venv/bin/python /mnt/skills/user/exploring-codebases/scripts/search.py "process_data" /path/to/repo --glob "*.py"

Scope and Limitations

Returns structural code elements — functions, classes, methods, interfaces, enums, structs, traits, and modules across 11 supported languages (Python, JavaScript, TypeScript, Go, Rust, Ruby, Java, C, C++, PHP, C#).

Does not return:

• Import/require statements
• Module-level variable assignments or constants
• Standalone decorators (decorators attached to functions/classes are included with their parent)
• Type aliases or standalone type annotations
• Comments outside of functions/classes

For these non-structural elements, use plain ripgrep (via the Grep tool) directly.