Crate lerr

lerr

extremely barebones error diagnostics for lang-dev

usage

heres the code for the sample above. feel free to add coloring with your favorite coloring crate, or just use raw ansi sequences.

use comat::cformat as cmt;
use lerr::Error;
let mut e = Error::new("Strin::nouveau().i_like_tests(3.14158)");
e.message(cmt!(r#"{bold_red}error{reset}: unknown function {bold_red}String::new(){reset}"#))
    .label((0..5, cmt!("you probably meant {black}String{reset}")))
    .label((7..16, cmt!("use {green}new(){reset}")))
    .label((17..18, cmt!("caps: {bold_cyan}I{reset}")))
    .label((30..37, cmt!("your {bold_yellow}π{reset} is bad")));
eprintln!("{e}");

Please note that multiline labels are not yet supported. If that doesnt work for you, use something like ariadne.

Modules

config

allows configuration of how the error will appear.

Structs

Error

The error builder that this crate is all about

Label

Label around a Span

Note

A note at the end of the diagnostic

Source

The source text that the spans “reference”

Type Aliases

Span

Span of bytes in the source