24 lines
770 B
Rust
24 lines
770 B
Rust
//! Contains error types and other error handling tools.
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pub use crate::parse::ParseIntError;
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/// Impls std::error::Error for the specified type with appropriate attributes, possibly returning
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/// source.
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macro_rules! impl_std_error {
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// No source available
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($type:ty) => {
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#[cfg(feature = "std")]
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#[cfg_attr(docsrs, doc(cfg(feature = "std")))]
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impl std::error::Error for $type {}
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};
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// Struct with $field as source
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($type:ty, $field:ident) => {
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#[cfg(feature = "std")]
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#[cfg_attr(docsrs, doc(cfg(feature = "std")))]
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impl std::error::Error for $type {
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fn source(&self) -> Option<&(dyn std::error::Error + 'static)> { Some(&self.$field) }
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}
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};
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}
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pub(crate) use impl_std_error;
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