CodeMap2 Diagnostic

Documentation

A Rust library for formatting compiler error messages, extracted from rustc and built on the types from the codemap crate.

License

Licensed under either of

• Apache License, Version 2.0, (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
• MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

lib.rs:

A library for formatting compiler error messages, extracted from rustc and built on the types from the codemap crate.

Example

extern crate codemap2;
extern crate codemap2_diagnostic;
use codemap2::{CodeMap, DefaultFileData};
use codemap2_diagnostic::{ Level, SpanLabel, SpanStyle, Diagnostic, ColorConfig, Emitter };

fn main() {
  let code = "foo + bar";
  let mut codemap = CodeMap::new();
  let file_span = codemap.add_file(DefaultFileData::new("test.rs".to_owned(), code.to_owned())).span;
  let name_span = file_span.subspan(0, 3);

  let label = SpanLabel {
      span: name_span,
      style: SpanStyle::Primary,
      label: Some("undefined variable".to_owned())
  };
  let d = Diagnostic {
      level: Level::Error,
      message: "cannot find value `foo` in this scope".to_owned(),
      code: Some("C000".to_owned()),
      spans: vec![label]
  };

  let mut emitter = Emitter::stderr(ColorConfig::Always, Some(&codemap));
  emitter.emit(&[d]);
}