Lib.rs

› Rust patterns
#error #reporting #macro #compiler-plugin

nightly compiler_error

Triggerable compiler error

by Luca Barbato

2 releases

Uses old Rust 2015

0.1.1 Jun 9, 2017
0.1.0 Dec 23, 2016

#35 in #compiler-plugin

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200 downloads per month

MIT license

3KB

Triggerable custom compiler error

Crates.io LICENSE

compiler_error is a rust compiler plugin that simply triggers a compilation error on demand and prints the token it receives, it is similar to the #error directive in the C preprocessor.

It is quite useful to provide helpful error message in macros with non-trival syntaxes.

Todo

  • support printing optionally multiple tokens
  • provide useful examples

No runtime deps