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49908b4d90
It currently has the syntax
`current_rustc_version!(env!("CFG_RELEASE"))` where the
`env!("CFG_RELEASE")` part looks like a normal expression but it is
actually parsed and processed by the `current_rustc_version` macro.
The documented rationale for this is that you'll find it if you grep for
`env!("CFG_RELEASE")`. But I think that's of very little use -- I would
personally grep for just "CFG_RELEASE" -- and it complicates the macro,
requiring the use of `syn`.
This commit simplifies the macro.
20 lines
505 B
Rust
20 lines
505 B
Rust
use std::fmt::{self, Display};
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#[derive(Encodable, Decodable, Copy, Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
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#[derive(HashStable_Generic)]
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pub struct RustcVersion {
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pub major: u16,
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pub minor: u16,
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pub patch: u16,
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}
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impl RustcVersion {
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pub const CURRENT: Self = current_rustc_version!();
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}
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impl Display for RustcVersion {
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fn fmt(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
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write!(formatter, "{}.{}.{}", self.major, self.minor, self.patch)
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}
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}
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