https://github.com/AuracleTech/jayce

jayce is a tokenizer 🌌
https://github.com/AuracleTech/jayce

tokenizer

Last synced: 11 days ago
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jayce is a tokenizer 🌌

• Host: GitHub
• URL: https://github.com/AuracleTech/jayce
• Owner: AuracleTech
• Created: 2022-03-26T14:48:04.000Z (over 2 years ago)
• Default Branch: master
• Last Pushed: 2024-03-16T16:22:43.000Z (8 months ago)
• Last Synced: 2024-09-18T01:05:22.076Z (about 2 months ago)
• Topics: tokenizer
• Language: Rust
• Homepage:
• Size: 251 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md

Awesome Lists containing this project

• awesome-blazingly-fast - jayce - jayce is a blazing fast tokenizer 🌌 (Rust)

README

        
# jayce

jayce is a tokenizer 🌌

##### Example

```rust

use jayce::{Duo, Tokenizer};

use std::sync::OnceLock;

const SOURCE: &str = "Excalibur = 5000$; // Your own language!";

fn duos() -> &'static Vec> {

    static DUOS: OnceLock>> = OnceLock::new();

    DUOS.get_or_init(|| {

        vec![

            Duo::new("whitespace", r"^[^\S\n]+", false),

            Duo::new("commentLine", r"^//(.*)", false),

            Duo::new("commentBlock", r"^/\*(.|\n)*?\*/", false),

            Duo::new("newline", r"^\n", false),

            Duo::new("price", r"^[0-9]+\$", true),

            Duo::new("semicolon", r"^;", true),

            Duo::new("operator", r"^=", true),

            Duo::new("name", r"^[a-zA-Z_]+", true),

        ]

    })

}

fn main() -> Result<(), Box> {

    let mut tokenizer = Tokenizer::new(SOURCE, duos());

    while let Some(token) = tokenizer.consume()? {

        println!("{:?}", token);

    }

    Ok(())

}

```

##### Result

```rust,ignore

Token { kind: "name",      value: "Excalibur", pos: (1, 1)  }

Token { kind: "operator",  value: "=",         pos: (1, 11) }

Token { kind: "price",     value: "5000$",     pos: (1, 13) }

Token { kind: "semicolon", value: ";",         pos: (1, 18) }

```

##### Info

`Tokenizer::consume` returns `Result Option Token`

1. `Ok Some` match found

2. `Ok None` end of source

3. `Err` an error occurs

`Tokenizer::consume_all` returns `Result Vec Token`

1. `Ok Vec Token` tokens matched

2. `Err` an error occurs

##### Performances

initialization in ~`3 nanoseconds`

tokenization of [Yuumi](https://github.com/AuracleTech/yuumi) in ~`4 milliseconds`

##### Features

- `generic-simd`

- `runtime-dispatch-simd` default enabled, to disable modify `Cargo.toml` as follows

```toml

jayce = { version = "X.X.X", default-features = false }

```