tree-sitter-razen

Razen grammar for tree-sitter.

Features

This grammar supports all Razen language features including:

• Keywords: const, var, fun, struct, enum, impl, type, mod, use, pub
• Control Flow: if, else, elif, while, for, in, match, return, break, continue
• Exception Handling: try, catch, throw
• Types: int, float, str, bool, char, array, map, any
• Operators: All arithmetic, comparison, logical, bitwise, and assignment operators
• Special Features:
  • F-strings with interpolation: f"Hello {name}"
  • Null coalescing: ??
  • Power operator: **
  • Range operators: .., ..=, ...
  • Update operators: ++, --
• Comments: Single-line (//) and multi-line (/* */)

Installation

npm

npm install tree-sitter-razen

Cargo

[dependencies]
tree-sitter-razen = "0.1.0"

Usage

Node.js

const Parser = require('tree-sitter');
const Razen = require('tree-sitter-razen');

const parser = new Parser();
parser.setLanguage(Razen);

const sourceCode = `
fun main() {
    const name = "World";
    println(f"Hello, {name}!");
}
`;

const tree = parser.parse(sourceCode);
console.log(tree.rootNode.toString());

Rust

use tree_sitter::Parser;
use tree_sitter_razen::LANGUAGE;

fn main() {
    let mut parser = Parser::new();
    parser.set_language(&LANGUAGE.into()).unwrap();
    
    let source_code = r#"
        fun main() {
            const name = "World";
            println(f"Hello, {name}!");
        }
    "#;
    
    let tree = parser.parse(source_code, None).unwrap();
    println!("{}", tree.root_node().to_sexp());
}

Development

Prerequisites

• Node.js (v16+)
• tree-sitter-cli: npm install -g tree-sitter-cli

Building

# Generate the parser
tree-sitter generate

# Test the parser
tree-sitter test

# Try the playground
tree-sitter playground

Testing

# Run tests
tree-sitter test

# Parse a file
tree-sitter parse examples/example.rz

Syntax Highlighting

This grammar includes comprehensive syntax highlighting queries:

• highlights.scm: Main syntax highlighting
• locals.scm: Local variable scoping
• injections.scm: Language injections (f-string interpolation)
• tags.scm: Symbol tagging for code navigation
• indents.scm: Indentation rules

File Extensions

• .rz
• .razen

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

License

MIT License - see LICENSE file for details.

Related Projects

• Razen Language
• Tree-sitter