Module concrete 

Concrete Syntax Parser

Parses Rust-like pattern syntax with metavariables into CodePattern.

Syntax

Syntax	Meaning	Example
$VAR	Capture single node	$receiver.unwrap()
$_	Match but don’t capture	foo($_, $second)
$...VAR	Capture sequence (ellipsis)	fn $name($...args)

Important

Patterns must be valid Rust syntax after metavariable substitution. For example, match $x { $_ } is invalid because match arms require => body.

Examples

use ryo_pattern::concrete::parse_pattern;

// Parse a method call pattern
let pattern = parse_pattern("$receiver.unwrap()").unwrap();

// Parse a macro call pattern
let pattern = parse_pattern("vec![$x]").unwrap();

// Parse a match expression (requires complete arm syntax)
let pattern = parse_pattern("match $x { _ => $body }").unwrap();

Structs

ConcreteParser

Parser for concrete syntax patterns

Enums

ParseError

Errors that can occur during pattern parsing

Functions

parse_pattern

Parse a concrete syntax pattern string into a CodePattern

Type Aliases

ParseResult

Result type for pattern parsing