https://github.com/ehwan/lua_rust

lua syntax parser & interpreter in Rust
https://github.com/ehwan/lua_rust

compiler glr-parsing lalr1 lua rust

Last synced: 6 days ago
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lua syntax parser & interpreter in Rust

• Host: GitHub
• URL: https://github.com/ehwan/lua_rust
• Owner: ehwan
• License: apache-2.0
• Created: 2024-09-04T00:46:42.000Z (6 months ago)
• Default Branch: main
• Last Pushed: 2024-10-26T15:44:54.000Z (4 months ago)
• Last Synced: 2025-02-08T01:00:01.167Z (13 days ago)
• Topics: compiler, glr-parsing, lalr1, lua, rust
• Language: Rust
• Homepage:
• Size: 388 KB
• Stars: 5
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE-APACHE

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README

        
# lua_rust

[![crates.io](https://img.shields.io/crates/v/lua_ir.svg)](https://crates.io/crates/lua_ir)

[![docs.rs](https://docs.rs/lua_ir/badge.svg)](https://docs.rs/lua_ir)

lua syntax parser & runtime interpreter in Rust

 - LALR(1), GLR parser

 - syntax referenced from [lua 5.4 reference manual](https://www.lua.org/manual/5.4/manual.html)

 - ***Greatly in progress***

    - grammar fully implemented

    - std library barely implemented

## Cargo Features

 - `32bit`: use 32bit integer and float for `lua numeric` type

## How to use

### As Library

add [`lua_ir`](https://crates.io/crates/lua_ir) crate to your `Cargo.toml`

```toml

[dependencies]

lua_ir = "..."

```

```rust

let mut env = lua_ir::LuaEnv::new();

env.eval_chunk( b"var_hello = 'Hello'" )?;

env.eval_chunk( b"var_world = 'World'" )?;

env.eval_chunk( b"print( var_hello .. ', ' .. var_world .. '!' )" )?;

// Hello, World!

let hello_value = env.get_global( "var_hello" )?;

let world_value = env.get_global( "var_world" )?;

env.set_global( "var_hello", 10.into() )?;

```

### As REPL interpreter

clone this repository and simply run

```

$ cargo run 

```

or

```

$ cargo run

```

will start lua REPL. Note that this executable is not `cargo publish`ed.