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: 25 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 (2 months ago)
• Default Branch: main
• Last Pushed: 2024-09-19T03:37:20.000Z (about 2 months ago)
• Last Synced: 2024-09-29T15:22:40.683Z (about 1 month ago)
• Topics: compiler, glr-parsing, lalr1, lua, rust
• Language: Rust
• Homepage:
• Size: 136 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE-APACHE

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README

        
# lua_rust

lua syntax parser & interpreter in Rust

 - Greatly in progress

 - LALR(1), GLR parser

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

## project structure

 - `tokenizer`: tokenizing lua code string.

 - `parser`: parsing tokenized lua code into AST.

 - `semantics`: semantic analysis of generated AST. It generates a `Enhanced AST` which contains more information than the original AST.

      - stack offset of local variables

      - scope checking for `return`, `break`, `goto`, `label`, ...

      - split function definition into separated Chunks

 - `lua_ir` : generate IRs from enhanced AST, and run on virtual machine (WIP)

## Cargo Features

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

 - `diag`: enable `to_diag()` function for `ParseError`

## how to run

```

$ cargo run 

```

will print the pretty-formatted `Debug` output of the AST ( `"{:#?}"` )