Crate whatwg_infra

A tiny Rust crate that implements parts of the WHATWG Infra Standard. Specifically, it implements the following:

• 4.5. Code points
• 4.6. Strings

It exposes a small set of primitives that are useful for parsing text into machine-readable data.

Install

cargo add whatwg-infra

Usage

You can import individual functions:

use whatwg_infra::{
    is_ascii_tab_newline,
    is_c0_control,
    is_c0_control_space,
    is_noncharacter
};

assert!(is_ascii_tab_newline('\t'));
assert!(is_c0_control('\u{0000}'));
assert!(is_c0_control_space('\u{0020}'));

You can also import the traits to get all the functionality, and execute the methods on the types directly.

use whatwg_infra::{InfraScalarValue, InfraStr, InfraUtf16Surrogate};

assert_eq!('a'.is_ascii_tab_newline(), false);
assert_eq!('\u{001E}'.is_c0_control(), true);
assert_eq!('\n'.is_c0_control_space(), true);
assert_eq!('\u{CFFFF}'.is_noncharacter(), true);

no_std

This crate does not depend on libstd, and can be used in #![no_std] environments.

Re-exports

• pub use crate::surrogates::*;
• pub use crate::scalar::*;
• pub use crate::strings::*;

Modules

• scalar
  Module for Unicode scalar values
• strings
  Module for Unicode strings
• surrogates
  Detection of UTF-16 surrogate codepoints for u16