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Contents
//! wasi-common uses an [`Error`] type which represents either a preview 1 [`Errno`] enum, on //! [`anyhow::Error`] for trapping execution. //! //! The user can construct an [`Error`] out of an [`Errno`] using the `From`/`Into` traits. //! They may also use [`Error::trap`] to construct an error that traps execution. The contents //! can be inspected with [`Error::downcast`] and [`Error::downcast_ref`]. Additional context //! can be provided with the [`Error::context`] method. This context is only observable with the //! `Display` and `Debug` impls of the error. pub use crate::snapshots::preview_1::error::{Errno, Error, ErrorExt}; use std::fmt; /// An error returned from the `proc_exit` host syscall. /// /// Embedders can test if an error returned from wasm is this error, in which /// case it may signal a non-fatal trap. #[derive(Debug)] pub struct I32Exit(pub i32); impl fmt::Display for I32Exit { fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { write!(f, "Exited with i32 exit status {}", self.0) } } impl std::error::Error for I32Exit {}
Version data entries
22 entries across 22 versions & 1 rubygems