https://github.com/hsiaosiyuan0/naive

Learn JavaScript the hard way 🤯
https://github.com/hsiaosiyuan0/naive

Last synced: 3 months ago
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Learn JavaScript the hard way 🤯

• Host: GitHub
• URL: https://github.com/hsiaosiyuan0/naive
• Owner: hsiaosiyuan0
• Created: 2019-06-21T12:24:45.000Z (about 5 years ago)
• Default Branch: master
• Last Pushed: 2019-07-24T02:34:25.000Z (almost 5 years ago)
• Last Synced: 2024-01-17T07:29:48.696Z (5 months ago)
• Language: Rust
• Homepage:
• Size: 149 KB
• Stars: 211
• Watchers: 9
• Forks: 11
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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• awesome-github-star - naive
• awesome - naive - Learn JavaScript the hard way 🤯 (Rust)

README

        
# Naive

This is a naive JavaScript engine implemented in pure Rust to improve my JavaScript knowledge.

[![asciicast](https://asciinema.org/a/NSyybvRaFimC4OLIDtarKJkII.svg)](https://asciinema.org/a/NSyybvRaFimC4OLIDtarKJkII)

## Checklist

### Frontend

* [x] Lexer

* [x] Recursive descent parser with [Operator Precedence Algorithm](https://en.wikipedia.org/wiki/Operator-precedence_parser) to optimize operators parsing

* [x] Generates abstract syntax tree on basis of [ESTree](https://github.com/estree/estree)

### Intermediate

* [x] Generates bytecode(opcode) from AST

* [ ] Bytecode analysis

* [ ] Optimizes bytecode according to the analysis result

### VM

* [x] Reference-counting GC with Mark-and-Sweep to deal with the reference cycle

* [x] Common Flow Control Statements(if-else, for, while, do-while)

* [x] Closure

* [x] Mathematical Operations

* [x] Function Invocation

* [x] Logical Operations

* [ ] Bitwise Operations

* [x] Object Literal

* [x] New Expression

* [x] Member Access Expression

* [ ] For-in Statement

* [ ] Switch Case Statement

* [ ] Try-catch Statement

* [ ] Debug

## How to run

Thanks to the Rust development infrastructure, run this engine from source is very easy, just:

```

$ cargo build

$ cargo run your-script.js

```

It's still in development, after it’s completed I’d like to write a series of posts to describe how to build a JavaScript engine from scratch, stay tuned.

Feel free to leave any response by submitting a issue. Star/Fork to subscribe its updates is welcome.