cache

Overview ¶

Package cache provides file-based caching for parsed AST nodes.

This package enables incremental duplicate detection by caching the parsed AST nodes for each file. When a file hasn't changed (same content hash), its cached AST can be reused instead of re-parsing.

Cache Structure:

.cache/art-dupl/
├── files/
│   ├── <hash1>.gob    # Serialized AST nodes for file with hash1
│   ├── <hash2>.gob    # Serialized AST nodes for file with hash2
│   └── ...
└── metadata.json      # Cache metadata (version, timestamps)

Usage:

cache := cache.NewFileCache(".cache/art-dupl")
nodes, hit := cache.Get(fileHash)
if !hit {
    nodes = parseFile(path)
    cache.Set(fileHash, nodes)
}