ryo-pattern 0.1.0

RyoPattern - AST pattern matching and lint rules for Ryo
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58

# ryo-pattern

[![crates.io](https://img.shields.io/crates/v/ryo-pattern.svg)](https://crates.io/crates/ryo-pattern)
[![docs.rs](https://docs.rs/ryo-pattern/badge.svg)](https://docs.rs/ryo-pattern)
[![License: MIT OR Apache-2.0](https://img.shields.io/badge/license-MIT%20OR%20Apache--2.0-blue.svg)](#license)

> **Status:** stable. Part of the [ryo](https://github.com/ynishi/ryo-rs) workspace —
> AST-centric Rust programming for AI agents.

RyoPattern — declarative AST pattern matching and lint rules for Rust.
Read-only structural matching with composable `any` / `all` / `none` grouping,
schema-driven definitions for LLM-perfect query generation, and pre-computed
relation graphs.

## Install

```sh
cargo add ryo-pattern
```

## Quickstart

```rust,ignore
use ryo_pattern::{parse_pattern, RuleEngine};

// Parse a concrete pattern
let pattern = parse_pattern("fn $name($args) -> Result<$ok, $err> { $body }")?;

// Match against AST nodes
let engine = RuleEngine::new();
let matches = engine.run(&pattern, &ast_root);

for m in matches {
    println!("matched: {:?} with captures {:?}", m.node, m.captures);
}
```

## API Summary

| Item | Purpose |
|---|---|
| `CodePattern` | AST node predicate (structural matching) |
| `parse_pattern` / `ConcreteParser` | Pattern DSL parser |
| `RuleEngine` / `Rule` | Query + message + severity bundles |
| `MatchResult` | Match outcome with `{$VAR: Node}` captures |
| `generator::*` | Template-based code generation |
| `loader::*` | Pattern loading from files |

## Status

API surface considered stable for the v0.1.0 release. Pattern matching
remains read-only; mutations are owned by downstream crates such as
[`ryo-mutations`](https://crates.io/crates/ryo-mutations).

## License

Licensed under either of [Apache-2.0](https://github.com/ynishi/ryo-rs/blob/main/LICENSE-APACHE)
or [MIT](https://github.com/ynishi/ryo-rs/blob/main/LICENSE-MIT) at your option.