// SPDX-License-Identifier: CC0-1.0 //! # Error //! //! Error handling macros and helpers. //! pub mod input_string; mod parse_error; pub use input_string::InputString; /// Formats error. /// /// If `std` feature is OFF appends error source (delimited by `: `). We do this because /// `e.source()` is only available in std builds, without this macro the error source is lost for /// no-std builds. #[macro_export] macro_rules! write_err { ($writer:expr, $string:literal $(, $args:expr)*; $source:expr) => { { #[cfg(feature = "std")] { let _ = &$source; // Prevents clippy warnings. write!($writer, $string $(, $args)*) } #[cfg(not(feature = "std"))] { write!($writer, concat!($string, ": {}") $(, $args)*, $source) } } } }