11 releases

0.3.0	Sep 10, 2023
0.2.8	Nov 29, 2022
0.2.6	Jun 22, 2020
0.2.2	May 31, 2020
0.1.0	May 30, 2020

#719 in Parser implementations

79 downloads per month
Used in wrk-api-bench

MIT/Apache

295KB
7.5K SLoC

rslua

Yet another Lua lexer and Lua parser for Lua 5.3 written in pure Rust.

Lexer

input str
output Result<&Vec<Token>, LexError>

use rslua::lexer::Lexer;
let mut lexer = Lexer::new();
let tokens = lexer.run(input_lua_code)?;

Lexer Config

Key	Type	Default	Descripten
`use_origin_string`	bool	false	Use origin string as token value instead of escaped one.
`reserve_comments`	bool	false	Reserve comments as tokens.

Parser

input &Vec<Token>
output Result<Block, SyntaxError>

let mut parser = Parser::new();
let block = parser.run(tokens)?;

AST walker

Use ast_walker to travel the AST, implement the AstVisitor trait to run custom logic.

A complete example

Read Lua source files from ./lua folder, parse them, generate ASTs and walk them through, use a LuaWritter struct which impletements the AstVisitor trait to re-generate formatted Lua source again to ./tmp folder.

See tests/lua_to_lua.rs

Dependencies

~0.4–1MB
~21K SLoC