build_target/
endian.rs

1use std::fmt;
2
3use crate::utils::{build_env, define_target_enum};
4
5define_target_enum! {
6    /// The endianness of the target architecture.
7    #[derive(Clone, Debug, Eq, Hash, PartialEq, PartialOrd, Ord)]
8    #[non_exhaustive]
9    pub enum Endian {
10        /// Most significant byte stored first.
11        Big => "big",
12        /// Least significant byte stored first.
13        Little => "little",
14    }
15
16    as_str_doc = "String representing this target endianness which matches `#[cfg(target_endian)]`",
17    from_str_doc = "Tries to parse the given string as an [`Endian`] falling back to [`Endian::Other`] for unknown values.",
18}
19
20impl Endian {
21    /// Gets the current target [`Endian`].
22    #[must_use]
23    pub fn target() -> Self {
24        Self::from_str(build_env("CARGO_CFG_TARGET_ENDIAN"))
25    }
26}
27
28impl fmt::Display for Endian {
29    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
30        f.write_str(self.as_str())
31    }
32}
build_target/endian.rs

build_target/
endian.rs
