Module ast_pattern 

AST pattern search.

Parses user-provided function signature patterns (e.g., “fn(string) -> number”) and matches them against indexed CodeChunk signatures. Supports wildcards (*), optional keywords (async, pub), and fuzzy type matching.

Pattern Syntax

[async] [pub] fn_keyword([param_type, ...]) [-> return_type]

Examples:

• fn(string) -> number — any function taking a string, returning a number
• fn(*) -> Result — any function returning a Result
• async fn(*) — any async function
• fn(*, *) -> bool — any function with 2 params returning bool
• fn authenticate(*) — function named “authenticate” with any params
• class User — class named User
• struct *Config — struct whose name ends with “Config”

Structs

AstMatch

Result of an AST pattern match.

AstPattern

A parsed AST search pattern.

Enums

PatternKind

The kind of pattern target.

Functions

parse_pattern

Parse a user-provided AST pattern string.

search_ast_pattern

Search chunks in the index using an AST pattern.