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::default();
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::default();
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