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Vendor dependencies for 0.3.0 release

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Robert Garrett
2025-09-27 10:29:08 -05:00
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS

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Permission is hereby granted, free of charge, to any
person obtaining a copy of this software and associated
documentation files (the "Software"), to deal in the
Software without restriction, including without
limitation the rights to use, copy, modify, merge,
publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software
is furnished to do so, subject to the following
conditions:
The above copyright notice and this permission notice
shall be included in all copies or substantial portions
of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.

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Compiler version cfg
====================
[<img alt="github" src="https://img.shields.io/badge/github-dtolnay/rustversion-8da0cb?style=for-the-badge&labelColor=555555&logo=github" height="20">](https://github.com/dtolnay/rustversion)
[<img alt="crates.io" src="https://img.shields.io/crates/v/rustversion.svg?style=for-the-badge&color=fc8d62&logo=rust" height="20">](https://crates.io/crates/rustversion)
[<img alt="docs.rs" src="https://img.shields.io/badge/docs.rs-rustversion-66c2a5?style=for-the-badge&labelColor=555555&logo=docs.rs" height="20">](https://docs.rs/rustversion)
[<img alt="build status" src="https://img.shields.io/github/actions/workflow/status/dtolnay/rustversion/ci.yml?branch=master&style=for-the-badge" height="20">](https://github.com/dtolnay/rustversion/actions?query=branch%3Amaster)
This crate provides macros for conditional compilation according to rustc
compiler version, analogous to [`#[cfg(...)]`][cfg] and
[`#[cfg_attr(...)]`][cfg_attr].
[cfg]: https://doc.rust-lang.org/reference/conditional-compilation.html#the-cfg-attribute
[cfg_attr]: https://doc.rust-lang.org/reference/conditional-compilation.html#the-cfg_attr-attribute
```toml
[dependencies]
rustversion = "1.0"
```
<br>
## Selectors
- <b>`#[rustversion::stable]`</b>
—<br>
True on any stable compiler.
- <b>`#[rustversion::stable(1.34)]`</b>
—<br>
True on exactly the specified stable compiler.
- <b>`#[rustversion::beta]`</b>
—<br>
True on any beta compiler.
- <b>`#[rustversion::nightly]`</b>
—<br>
True on any nightly compiler or dev build.
- <b>`#[rustversion::nightly(2025-01-01)]`</b>
—<br>
True on exactly one nightly.
- <b>`#[rustversion::since(1.34)]`</b>
—<br>
True on that stable release and any later compiler, including beta and
nightly.
- <b>`#[rustversion::since(2025-01-01)]`</b>
—<br>
True on that nightly and all newer ones.
- <b>`#[rustversion::before(`</b><i>version or date</i><b>`)]`</b>
—<br>
Negative of *#[rustversion::since(...)]*.
- <b>`#[rustversion::not(`</b><i>selector</i><b>`)]`</b>
—<br>
Negative of any selector; for example *#[rustversion::not(nightly)]*.
- <b>`#[rustversion::any(`</b><i>selectors...</i><b>`)]`</b>
—<br>
True if any of the comma-separated selectors is true; for example
*#[rustversion::any(stable, beta)]*.
- <b>`#[rustversion::all(`</b><i>selectors...</i><b>`)]`</b>
—<br>
True if all of the comma-separated selectors are true; for example
*#[rustversion::all(since(1.31), before(1.34))]*.
- <b>`#[rustversion::attr(`</b><i>selector</i><b>`, `</b><i>attribute</i><b>`)]`</b>
—<br>
For conditional inclusion of attributes; analogous to `cfg_attr`.
- <b>`rustversion::cfg!(`</b><i>selector</i><b>`)`</b>
—<br>
An expression form of any of the above attributes; for example
*if rustversion::cfg!(any(stable, beta)) { ... }*.
<br>
## Use cases
Providing additional trait impls as types are stabilized in the standard library
without breaking compatibility with older compilers; in this case Pin\<P\>
stabilized in [Rust 1.33][pin]:
[pin]: https://blog.rust-lang.org/2019/02/28/Rust-1.33.0.html#pinning
```rust
#[rustversion::since(1.33)]
use std::pin::Pin;
#[rustversion::since(1.33)]
impl<P: MyTrait> MyTrait for Pin<P> {
/* ... */
}
```
Similar but for language features; the ability to control alignment greater than
1 of packed structs was stabilized in [Rust 1.33][packed].
[packed]: https://github.com/rust-lang/rust/blob/master/RELEASES.md#version-1330-2019-02-28
```rust
#[rustversion::attr(before(1.33), repr(packed))]
#[rustversion::attr(since(1.33), repr(packed(2)))]
struct Six(i16, i32);
fn main() {
println!("{}", std::mem::align_of::<Six>());
}
```
Augmenting code with `const` as const impls are stabilized in the standard
library. This use of `const` as an attribute is recognized as a special case by
the rustversion::attr macro.
```rust
use std::time::Duration;
#[rustversion::attr(since(1.32), const)]
fn duration_as_days(dur: Duration) -> u64 {
dur.as_secs() / 60 / 60 / 24
}
```
Emitting Cargo cfg directives from a build script. Note that this requires
listing `rustversion` under `[build-dependencies]` in Cargo.toml, not
`[dependencies]`.
```rust
// build.rs
fn main() {
if rustversion::cfg!(since(1.36)) {
println!("cargo:rustc-cfg=no_std");
}
}
```
```rust
// src/lib.rs
#![cfg_attr(no_std, no_std)]
#[cfg(no_std)]
extern crate alloc;
```
<br>
#### License
<sup>
Licensed under either of <a href="LICENSE-APACHE">Apache License, Version
2.0</a> or <a href="LICENSE-MIT">MIT license</a> at your option.
</sup>
<br>
<sub>
Unless you explicitly state otherwise, any contribution intentionally submitted
for inclusion in this crate by you, as defined in the Apache-2.0 license, shall
be dual licensed as above, without any additional terms or conditions.
</sub>

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#![allow(
clippy::elidable_lifetime_names,
clippy::enum_glob_use,
clippy::must_use_candidate,
clippy::single_match_else
)]
mod rustc;
use std::env;
use std::ffi::OsString;
use std::fmt::{self, Debug, Display};
use std::fs;
use std::iter;
use std::path::Path;
use std::process::{self, Command};
fn main() {
println!("cargo:rerun-if-changed=build/build.rs");
let rustc = env::var_os("RUSTC").unwrap_or_else(|| OsString::from("rustc"));
let rustc_wrapper = env::var_os("RUSTC_WRAPPER").filter(|wrapper| !wrapper.is_empty());
let wrapped_rustc = rustc_wrapper.iter().chain(iter::once(&rustc));
let mut is_clippy_driver = false;
let mut is_mirai = false;
let version = loop {
let mut command;
if is_mirai {
command = Command::new(&rustc);
} else {
let mut wrapped_rustc = wrapped_rustc.clone();
command = Command::new(wrapped_rustc.next().unwrap());
command.args(wrapped_rustc);
}
if is_clippy_driver {
command.arg("--rustc");
}
command.arg("--version");
let output = match command.output() {
Ok(output) => output,
Err(e) => {
let rustc = rustc.to_string_lossy();
eprintln!("Error: failed to run `{} --version`: {}", rustc, e);
process::exit(1);
}
};
let string = match String::from_utf8(output.stdout) {
Ok(string) => string,
Err(e) => {
let rustc = rustc.to_string_lossy();
eprintln!(
"Error: failed to parse output of `{} --version`: {}",
rustc, e,
);
process::exit(1);
}
};
break match rustc::parse(&string) {
rustc::ParseResult::Success(version) => version,
rustc::ParseResult::OopsClippy if !is_clippy_driver => {
is_clippy_driver = true;
continue;
}
rustc::ParseResult::OopsMirai if !is_mirai && rustc_wrapper.is_some() => {
is_mirai = true;
continue;
}
rustc::ParseResult::Unrecognized
| rustc::ParseResult::OopsClippy
| rustc::ParseResult::OopsMirai => {
eprintln!(
"Error: unexpected output from `rustc --version`: {:?}\n\n\
Please file an issue in https://github.com/dtolnay/rustversion",
string
);
process::exit(1);
}
};
};
if version.minor < 38 {
// Prior to 1.38, a #[proc_macro] is not allowed to be named `cfg`.
println!("cargo:rustc-cfg=cfg_macro_not_allowed");
}
if version.minor >= 80 {
println!("cargo:rustc-check-cfg=cfg(cfg_macro_not_allowed)");
println!("cargo:rustc-check-cfg=cfg(host_os, values(\"windows\"))");
}
let version = format!("{:#}\n", Render(&version));
let out_dir = env::var_os("OUT_DIR").expect("OUT_DIR not set");
let out_file = Path::new(&out_dir).join("version.expr");
fs::write(out_file, version).expect("failed to write version.expr");
let host = env::var_os("HOST").expect("HOST not set");
if let Some("windows") = host.to_str().unwrap().split('-').nth(2) {
println!("cargo:rustc-cfg=host_os=\"windows\"");
}
}
// Shim Version's {:?} format into a {} format, because {:?} is unusable in
// format strings when building with `-Zfmt-debug=none`.
struct Render<'a>(&'a rustc::Version);
impl<'a> Display for Render<'a> {
fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
Debug::fmt(self.0, formatter)
}
}

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use self::Channel::*;
use std::fmt::{self, Debug};
pub enum ParseResult {
Success(Version),
OopsClippy,
OopsMirai,
Unrecognized,
}
#[cfg_attr(test, derive(PartialEq))]
pub struct Version {
pub minor: u16,
pub patch: u16,
pub channel: Channel,
}
#[cfg_attr(test, derive(PartialEq))]
pub enum Channel {
Stable,
Beta,
Nightly(Date),
Dev,
}
#[cfg_attr(test, derive(PartialEq))]
pub struct Date {
pub year: u16,
pub month: u8,
pub day: u8,
}
pub fn parse(string: &str) -> ParseResult {
let last_line = string.lines().last().unwrap_or(string);
let mut words = last_line.trim().split(' ');
match words.next() {
Some("rustc") => {}
Some(word) if word.starts_with("clippy") => return ParseResult::OopsClippy,
Some("mirai") => return ParseResult::OopsMirai,
Some(_) | None => return ParseResult::Unrecognized,
}
parse_words(&mut words).map_or(ParseResult::Unrecognized, ParseResult::Success)
}
fn parse_words(words: &mut dyn Iterator<Item = &str>) -> Option<Version> {
let mut version_channel = words.next()?.split('-');
let version = version_channel.next()?;
let channel = version_channel.next();
let mut digits = version.split('.');
let major = digits.next()?;
if major != "1" {
return None;
}
let minor = digits.next()?.parse().ok()?;
let patch = digits.next().unwrap_or("0").parse().ok()?;
let channel = match channel {
None => Stable,
Some("dev") => Dev,
Some(channel) if channel.starts_with("beta") => Beta,
Some("nightly") => match words.next() {
Some(hash) if hash.starts_with('(') => match words.next() {
None if hash.ends_with(')') => Dev,
Some(date) if date.ends_with(')') => {
let mut date = date[..date.len() - 1].split('-');
let year = date.next()?.parse().ok()?;
let month = date.next()?.parse().ok()?;
let day = date.next()?.parse().ok()?;
match date.next() {
None => Nightly(Date { year, month, day }),
Some(_) => return None,
}
}
None | Some(_) => return None,
},
Some(_) => return None,
None => Dev,
},
Some(_) => return None,
};
Some(Version {
minor,
patch,
channel,
})
}
impl Debug for Version {
fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
formatter
.debug_struct("crate::version::Version")
.field("minor", &self.minor)
.field("patch", &self.patch)
.field("channel", &self.channel)
.finish()
}
}
impl Debug for Channel {
fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
match self {
Channel::Stable => formatter.write_str("crate::version::Channel::Stable"),
Channel::Beta => formatter.write_str("crate::version::Channel::Beta"),
Channel::Nightly(date) => formatter
.debug_tuple("crate::version::Channel::Nightly")
.field(date)
.finish(),
Channel::Dev => formatter.write_str("crate::version::Channel::Dev"),
}
}
}
impl Debug for Date {
fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
formatter
.debug_struct("crate::date::Date")
.field("year", &self.year)
.field("month", &self.month)
.field("day", &self.day)
.finish()
}
}

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use crate::error::{Error, Result};
use crate::expr::{self, Expr};
use crate::{iter, token};
use proc_macro::{Span, TokenStream};
pub struct Args {
pub condition: Expr,
pub then: Then,
}
pub enum Then {
Const(Span),
Attribute(TokenStream),
}
pub fn parse(input: TokenStream) -> Result<Args> {
let ref mut input = iter::new(input);
let condition = expr::parse(input)?;
token::parse_punct(input, ',')?;
if input.peek().is_none() {
return Err(Error::new(Span::call_site(), "expected one or more attrs"));
}
let const_span = token::parse_optional_keyword(input, "const");
let then = if let Some(const_span) = const_span {
token::parse_optional_punct(input, ',');
token::parse_end(input)?;
Then::Const(const_span)
} else {
Then::Attribute(input.collect())
};
Ok(Args { condition, then })
}

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use crate::date::{self, Date};
use crate::error::{Error, Result};
use crate::iter::Iter;
use crate::release::{self, Release};
use crate::time;
use crate::version::{Channel::*, Version};
use proc_macro::{Group, TokenTree};
use std::cmp::Ordering;
pub enum Bound {
Nightly(Date),
Stable(Release),
}
pub fn parse(paren: Group, iter: Iter) -> Result<Bound> {
if let Some(TokenTree::Literal(literal)) = iter.peek() {
let repr = literal.to_string();
if repr.starts_with(|ch: char| ch.is_ascii_digit()) {
if repr.contains('.') {
return release::parse(paren, iter).map(Bound::Stable);
} else {
return date::parse(paren, iter).map(Bound::Nightly);
}
}
}
let msg = format!(
"expected rustc release number like 1.85, or nightly date like {}",
time::today(),
);
Err(Error::group(paren, msg))
}
impl PartialEq<Bound> for Version {
fn eq(&self, rhs: &Bound) -> bool {
match rhs {
Bound::Nightly(date) => match self.channel {
Stable | Beta | Dev => false,
Nightly(nightly) => nightly == *date,
},
Bound::Stable(release) => {
self.minor == release.minor
&& release.patch.map_or(true, |patch| self.patch == patch)
}
}
}
}
impl PartialOrd<Bound> for Version {
fn partial_cmp(&self, rhs: &Bound) -> Option<Ordering> {
match rhs {
Bound::Nightly(date) => match self.channel {
Stable | Beta => Some(Ordering::Less),
Nightly(nightly) => Some(nightly.cmp(date)),
Dev => Some(Ordering::Greater),
},
Bound::Stable(release) => {
let version = (self.minor, self.patch);
let bound = (release.minor, release.patch.unwrap_or(0));
Some(version.cmp(&bound))
}
}
}
}

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use crate::error::{Error, Result};
use proc_macro::{Ident, Span, TokenStream, TokenTree};
use std::iter;
#[derive(PartialOrd, PartialEq)]
enum Qualifiers {
None,
Async,
Unsafe,
Extern,
Abi,
}
impl Qualifiers {
fn from_ident(ident: &Ident) -> Self {
match ident.to_string().as_str() {
"async" => Qualifiers::Async,
"unsafe" => Qualifiers::Unsafe,
"extern" => Qualifiers::Extern,
_ => Qualifiers::None,
}
}
}
pub(crate) fn insert_const(input: TokenStream, const_span: Span) -> Result<TokenStream> {
let ref mut input = crate::iter::new(input);
let mut out = TokenStream::new();
let mut qualifiers = Qualifiers::None;
let mut pending = Vec::new();
while let Some(token) = input.next() {
match token {
TokenTree::Ident(ref ident) if ident.to_string() == "fn" => {
let const_ident = Ident::new("const", const_span);
out.extend(iter::once(TokenTree::Ident(const_ident)));
out.extend(pending);
out.extend(iter::once(token));
out.extend(input);
return Ok(out);
}
TokenTree::Ident(ref ident) if Qualifiers::from_ident(ident) > qualifiers => {
qualifiers = Qualifiers::from_ident(ident);
pending.push(token);
}
TokenTree::Literal(_) if qualifiers == Qualifiers::Extern => {
qualifiers = Qualifiers::Abi;
pending.push(token);
}
_ => {
qualifiers = Qualifiers::None;
out.extend(pending.drain(..));
out.extend(iter::once(token));
}
}
}
Err(Error::new(const_span, "only allowed on a fn item"))
}

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use crate::error::{Error, Result};
use crate::iter::Iter;
use crate::{time, token};
use proc_macro::Group;
use std::fmt::{self, Display};
#[derive(Copy, Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
pub struct Date {
pub year: u16,
pub month: u8,
pub day: u8,
}
impl Display for Date {
fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
write!(
formatter,
"{:04}-{:02}-{:02}",
self.year, self.month, self.day,
)
}
}
pub fn parse(paren: Group, iter: Iter) -> Result<Date> {
try_parse(iter).map_err(|()| {
let msg = format!("expected nightly date, like {}", time::today());
Error::group(paren, msg)
})
}
fn try_parse(iter: Iter) -> Result<Date, ()> {
let year = token::parse_literal(iter).map_err(drop)?;
token::parse_punct(iter, '-').map_err(drop)?;
let month = token::parse_literal(iter).map_err(drop)?;
token::parse_punct(iter, '-').map_err(drop)?;
let day = token::parse_literal(iter).map_err(drop)?;
let year = year.to_string().parse::<u64>().map_err(drop)?;
let month = month.to_string().parse::<u64>().map_err(drop)?;
let day = day.to_string().parse::<u64>().map_err(drop)?;
if year >= 3000 || month > 12 || day > 31 {
return Err(());
}
Ok(Date {
year: year as u16,
month: month as u8,
day: day as u8,
})
}

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use proc_macro::{Delimiter, Group, Ident, Literal, Punct, Spacing, Span, TokenStream, TokenTree};
use std::fmt::Display;
use std::iter::FromIterator;
pub type Result<T, E = Error> = std::result::Result<T, E>;
pub struct Error {
begin: Span,
end: Span,
msg: String,
}
impl Error {
pub fn new(span: Span, msg: impl Display) -> Self {
Self::new2(span, span, msg)
}
pub fn new2(begin: Span, end: Span, msg: impl Display) -> Self {
Error {
begin,
end,
msg: msg.to_string(),
}
}
pub fn group(group: Group, msg: impl Display) -> Self {
let mut iter = group.stream().into_iter();
let delimiter = group.span();
let begin = iter.next().map_or(delimiter, |t| t.span());
let end = iter.last().map_or(begin, |t| t.span());
Self::new2(begin, end, msg)
}
pub fn into_compile_error(self) -> TokenStream {
// compile_error! { $msg }
TokenStream::from_iter(vec![
TokenTree::Ident(Ident::new("compile_error", self.begin)),
TokenTree::Punct({
let mut punct = Punct::new('!', Spacing::Alone);
punct.set_span(self.begin);
punct
}),
TokenTree::Group({
let mut group = Group::new(Delimiter::Brace, {
TokenStream::from_iter(vec![TokenTree::Literal({
let mut string = Literal::string(&self.msg);
string.set_span(self.end);
string
})])
});
group.set_span(self.end);
group
}),
])
}
}

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use crate::attr::{self, Then};
use crate::error::{Error, Result};
use crate::{constfn, expr, iter, token};
use proc_macro::{Delimiter, Group, Ident, Punct, Spacing, Span, TokenStream, TokenTree};
use std::iter::FromIterator;
pub fn cfg(introducer: &str, args: TokenStream, input: TokenStream) -> TokenStream {
try_cfg(introducer, args, input).unwrap_or_else(Error::into_compile_error)
}
fn try_cfg(introducer: &str, args: TokenStream, input: TokenStream) -> Result<TokenStream> {
let introducer = Ident::new(introducer, Span::call_site());
let mut full_args = TokenStream::from(TokenTree::Ident(introducer));
if !args.is_empty() {
full_args.extend(std::iter::once(TokenTree::Group(Group::new(
Delimiter::Parenthesis,
args,
))));
}
let ref mut full_args = iter::new(full_args);
let expr = expr::parse(full_args)?;
token::parse_end(full_args)?;
if expr.eval(crate::RUSTVERSION) {
Ok(allow_incompatible_msrv(input))
} else {
Ok(TokenStream::new())
}
}
pub fn try_attr(args: attr::Args, input: TokenStream) -> Result<TokenStream> {
if !args.condition.eval(crate::RUSTVERSION) {
return Ok(input);
}
let output = match args.then {
Then::Const(const_token) => constfn::insert_const(input, const_token)?,
Then::Attribute(then) => {
TokenStream::from_iter(
// #[cfg_attr(all(), #then)]
vec![
TokenTree::Punct(Punct::new('#', Spacing::Alone)),
TokenTree::Group(Group::new(
Delimiter::Bracket,
TokenStream::from_iter(vec![
TokenTree::Ident(Ident::new("cfg_attr", Span::call_site())),
TokenTree::Group(Group::new(
Delimiter::Parenthesis,
TokenStream::from_iter(
vec![
TokenTree::Ident(Ident::new("all", Span::call_site())),
TokenTree::Group(Group::new(
Delimiter::Parenthesis,
TokenStream::new(),
)),
TokenTree::Punct(Punct::new(',', Spacing::Alone)),
]
.into_iter()
.chain(then),
),
)),
]),
)),
]
.into_iter()
.chain(input),
)
}
};
Ok(allow_incompatible_msrv(output))
}
fn allow_incompatible_msrv(input: TokenStream) -> TokenStream {
TokenStream::from_iter(
// #[allow(clippy::incompatible_msrv)]
vec![
TokenTree::Punct(Punct::new('#', Spacing::Alone)),
TokenTree::Group(Group::new(
Delimiter::Bracket,
TokenStream::from_iter(vec![
TokenTree::Ident(Ident::new("allow", Span::call_site())),
TokenTree::Group(Group::new(
Delimiter::Parenthesis,
TokenStream::from_iter(vec![
TokenTree::Ident(Ident::new("clippy", Span::call_site())),
TokenTree::Punct(Punct::new(':', Spacing::Joint)),
TokenTree::Punct(Punct::new(':', Spacing::Alone)),
TokenTree::Ident(Ident::new("incompatible_msrv", Span::call_site())),
]),
)),
]),
)),
]
.into_iter()
.chain(input),
)
}

163
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use crate::bound::{self, Bound};
use crate::date::{self, Date};
use crate::error::{Error, Result};
use crate::iter::{self, Iter};
use crate::release::{self, Release};
use crate::token;
use crate::version::{Channel, Version};
use proc_macro::{Ident, Span, TokenTree};
pub enum Expr {
Stable,
Beta,
Nightly,
Date(Date),
Since(Bound),
Before(Bound),
Release(Release),
Not(Box<Expr>),
Any(Vec<Expr>),
All(Vec<Expr>),
}
impl Expr {
pub fn eval(&self, rustc: Version) -> bool {
use self::Expr::*;
match self {
Stable => rustc.channel == Channel::Stable,
Beta => rustc.channel == Channel::Beta,
Nightly => match rustc.channel {
Channel::Nightly(_) | Channel::Dev => true,
Channel::Stable | Channel::Beta => false,
},
Date(date) => match rustc.channel {
Channel::Nightly(rustc) => rustc == *date,
Channel::Stable | Channel::Beta | Channel::Dev => false,
},
Since(bound) => rustc >= *bound,
Before(bound) => rustc < *bound,
Release(release) => {
rustc.channel == Channel::Stable
&& rustc.minor == release.minor
&& release.patch.map_or(true, |patch| rustc.patch == patch)
}
Not(expr) => !expr.eval(rustc),
Any(exprs) => exprs.iter().any(|e| e.eval(rustc)),
All(exprs) => exprs.iter().all(|e| e.eval(rustc)),
}
}
}
pub fn parse(iter: Iter) -> Result<Expr> {
match &iter.next() {
Some(TokenTree::Ident(i)) if i.to_string() == "stable" => parse_stable(iter),
Some(TokenTree::Ident(i)) if i.to_string() == "beta" => Ok(Expr::Beta),
Some(TokenTree::Ident(i)) if i.to_string() == "nightly" => parse_nightly(iter),
Some(TokenTree::Ident(i)) if i.to_string() == "since" => parse_since(i, iter),
Some(TokenTree::Ident(i)) if i.to_string() == "before" => parse_before(i, iter),
Some(TokenTree::Ident(i)) if i.to_string() == "not" => parse_not(i, iter),
Some(TokenTree::Ident(i)) if i.to_string() == "any" => parse_any(i, iter),
Some(TokenTree::Ident(i)) if i.to_string() == "all" => parse_all(i, iter),
unexpected => {
let span = unexpected
.as_ref()
.map_or_else(Span::call_site, TokenTree::span);
Err(Error::new(span, "expected one of `stable`, `beta`, `nightly`, `since`, `before`, `not`, `any`, `all`"))
}
}
}
fn parse_nightly(iter: Iter) -> Result<Expr> {
let paren = match token::parse_optional_paren(iter) {
Some(group) => group,
None => return Ok(Expr::Nightly),
};
let ref mut inner = iter::new(paren.stream());
let date = date::parse(paren, inner)?;
token::parse_optional_punct(inner, ',');
token::parse_end(inner)?;
Ok(Expr::Date(date))
}
fn parse_stable(iter: Iter) -> Result<Expr> {
let paren = match token::parse_optional_paren(iter) {
Some(group) => group,
None => return Ok(Expr::Stable),
};
let ref mut inner = iter::new(paren.stream());
let release = release::parse(paren, inner)?;
token::parse_optional_punct(inner, ',');
token::parse_end(inner)?;
Ok(Expr::Release(release))
}
fn parse_since(introducer: &Ident, iter: Iter) -> Result<Expr> {
let paren = token::parse_paren(introducer, iter)?;
let ref mut inner = iter::new(paren.stream());
let bound = bound::parse(paren, inner)?;
token::parse_optional_punct(inner, ',');
token::parse_end(inner)?;
Ok(Expr::Since(bound))
}
fn parse_before(introducer: &Ident, iter: Iter) -> Result<Expr> {
let paren = token::parse_paren(introducer, iter)?;
let ref mut inner = iter::new(paren.stream());
let bound = bound::parse(paren, inner)?;
token::parse_optional_punct(inner, ',');
token::parse_end(inner)?;
Ok(Expr::Before(bound))
}
fn parse_not(introducer: &Ident, iter: Iter) -> Result<Expr> {
let paren = token::parse_paren(introducer, iter)?;
let ref mut inner = iter::new(paren.stream());
let expr = self::parse(inner)?;
token::parse_optional_punct(inner, ',');
token::parse_end(inner)?;
Ok(Expr::Not(Box::new(expr)))
}
fn parse_any(introducer: &Ident, iter: Iter) -> Result<Expr> {
let paren = token::parse_paren(introducer, iter)?;
let ref mut inner = iter::new(paren.stream());
let exprs = parse_comma_separated(inner)?;
Ok(Expr::Any(exprs.into_iter().collect()))
}
fn parse_all(introducer: &Ident, iter: Iter) -> Result<Expr> {
let paren = token::parse_paren(introducer, iter)?;
let ref mut inner = iter::new(paren.stream());
let exprs = parse_comma_separated(inner)?;
Ok(Expr::All(exprs.into_iter().collect()))
}
fn parse_comma_separated(iter: Iter) -> Result<Vec<Expr>> {
let mut exprs = Vec::new();
while iter.peek().is_some() {
let expr = self::parse(iter)?;
exprs.push(expr);
if iter.peek().is_none() {
break;
}
token::parse_punct(iter, ',')?;
}
Ok(exprs)
}

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use proc_macro::{token_stream, Delimiter, TokenStream, TokenTree};
pub type Iter<'a> = &'a mut IterImpl;
pub struct IterImpl {
stack: Vec<token_stream::IntoIter>,
peeked: Option<TokenTree>,
}
pub fn new(tokens: TokenStream) -> IterImpl {
IterImpl {
stack: vec![tokens.into_iter()],
peeked: None,
}
}
impl IterImpl {
pub fn peek(&mut self) -> Option<&TokenTree> {
self.peeked = self.next();
self.peeked.as_ref()
}
}
impl Iterator for IterImpl {
type Item = TokenTree;
fn next(&mut self) -> Option<Self::Item> {
if let Some(tt) = self.peeked.take() {
return Some(tt);
}
loop {
let top = self.stack.last_mut()?;
match top.next() {
None => drop(self.stack.pop()),
Some(TokenTree::Group(ref group)) if group.delimiter() == Delimiter::None => {
self.stack.push(group.stream().into_iter());
}
Some(tt) => return Some(tt),
}
}
}
}

282
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//! [![github]](https://github.com/dtolnay/rustversion)&ensp;[![crates-io]](https://crates.io/crates/rustversion)&ensp;[![docs-rs]](https://docs.rs/rustversion)
//!
//! [github]: https://img.shields.io/badge/github-8da0cb?style=for-the-badge&labelColor=555555&logo=github
//! [crates-io]: https://img.shields.io/badge/crates.io-fc8d62?style=for-the-badge&labelColor=555555&logo=rust
//! [docs-rs]: https://img.shields.io/badge/docs.rs-66c2a5?style=for-the-badge&labelColor=555555&logo=docs.rs
//!
//! <br>
//!
//! This crate provides macros for conditional compilation according to rustc
//! compiler version, analogous to [`#[cfg(...)]`][cfg] and
//! [`#[cfg_attr(...)]`][cfg_attr].
//!
//! [cfg]: https://doc.rust-lang.org/reference/conditional-compilation.html#the-cfg-attribute
//! [cfg_attr]: https://doc.rust-lang.org/reference/conditional-compilation.html#the-cfg_attr-attribute
//!
//! <br>
//!
//! # Selectors
//!
//! - <p style="margin-left:50px;text-indent:-50px">
//! <b><code style="display:inline">#[rustversion::stable]</code></b>
//! —<br>
//! True on any stable compiler.
//! </p>
//!
//! - <p style="margin-left:50px;text-indent:-50px">
//! <b><code style="display:inline">#[rustversion::stable(1.34)]</code></b>
//! —<br>
//! True on exactly the specified stable compiler.
//! </p>
//!
//! - <p style="margin-left:50px;text-indent:-50px">
//! <b><code style="display:inline">#[rustversion::beta]</code></b>
//! —<br>
//! True on any beta compiler.
//! </p>
//!
//! - <p style="margin-left:50px;text-indent:-50px">
//! <b><code style="display:inline">#[rustversion::nightly]</code></b>
//! —<br>
//! True on any nightly compiler or dev build.
//! </p>
//!
//! - <p style="margin-left:50px;text-indent:-50px">
//! <b><code style="display:inline">#[rustversion::nightly(2025-01-01)]</code></b>
//! —<br>
//! True on exactly one nightly.
//! </p>
//!
//! - <p style="margin-left:50px;text-indent:-50px">
//! <b><code style="display:inline">#[rustversion::since(1.34)]</code></b>
//! —<br>
//! True on that stable release and any later compiler, including beta and
//! nightly.
//! </p>
//!
//! - <p style="margin-left:50px;text-indent:-50px">
//! <b><code style="display:inline">#[rustversion::since(2025-01-01)]</code></b>
//! —<br>
//! True on that nightly and all newer ones.
//! </p>
//!
//! - <p style="margin-left:50px;text-indent:-50px">
//! <b><code style="display:inline">#[rustversion::before(</code></b><i>version or date</i><b><code style="display:inline">)]</code></b>
//! —<br>
//! Negative of <i>#[rustversion::since(...)]</i>.
//! </p>
//!
//! - <p style="margin-left:50px;text-indent:-50px">
//! <b><code style="display:inline">#[rustversion::not(</code></b><i>selector</i><b><code style="display:inline">)]</code></b>
//! —<br>
//! Negative of any selector; for example <i>#[rustversion::not(nightly)]</i>.
//! </p>
//!
//! - <p style="margin-left:50px;text-indent:-50px">
//! <b><code style="display:inline">#[rustversion::any(</code></b><i>selectors...</i><b><code style="display:inline">)]</code></b>
//! —<br>
//! True if any of the comma-separated selectors is true; for example
//! <i>#[rustversion::any(stable, beta)]</i>.
//! </p>
//!
//! - <p style="margin-left:50px;text-indent:-50px">
//! <b><code style="display:inline">#[rustversion::all(</code></b><i>selectors...</i><b><code style="display:inline">)]</code></b>
//! —<br>
//! True if all of the comma-separated selectors are true; for example
//! <i>#[rustversion::all(since(1.31), before(1.34))]</i>.
//! </p>
//!
//! - <p style="margin-left:50px;text-indent:-50px">
//! <b><code style="display:inline">#[rustversion::attr(</code></b><i>selector</i><b><code style="display:inline">, </code></b><i>attribute</i><b><code style="display:inline">)]</code></b>
//! —<br>
//! For conditional inclusion of attributes; analogous to
//! <code style="display:inline">cfg_attr</code>.
//! </p>
//!
//! - <p style="margin-left:50px;text-indent:-50px">
//! <b><code style="display:inline">rustversion::cfg!(</code></b><i>selector</i><b><code style="display:inline">)</code></b>
//! —<br>
//! An expression form of any of the above attributes; for example
//! <i>if rustversion::cfg!(any(stable, beta)) { ... }</i>.
//! </p>
//!
//! <br>
//!
//! # Use cases
//!
//! Providing additional trait impls as types are stabilized in the standard library
//! without breaking compatibility with older compilers; in this case Pin\<P\>
//! stabilized in [Rust 1.33][pin]:
//!
//! [pin]: https://blog.rust-lang.org/2019/02/28/Rust-1.33.0.html#pinning
//!
//! ```
//! # trait MyTrait {}
//! #
//! #[rustversion::since(1.33)]
//! use std::pin::Pin;
//!
//! #[rustversion::since(1.33)]
//! impl<P: MyTrait> MyTrait for Pin<P> {
//! /* ... */
//! }
//! ```
//!
//! Similar but for language features; the ability to control alignment greater than
//! 1 of packed structs was stabilized in [Rust 1.33][packed].
//!
//! [packed]: https://github.com/rust-lang/rust/blob/master/RELEASES.md#version-1330-2019-02-28
//!
//! ```
//! #[rustversion::attr(before(1.33), repr(packed))]
//! #[rustversion::attr(since(1.33), repr(packed(2)))]
//! struct Six(i16, i32);
//!
//! fn main() {
//! println!("{}", std::mem::align_of::<Six>());
//! }
//! ```
//!
//! Augmenting code with `const` as const impls are stabilized in the standard
//! library. This use of `const` as an attribute is recognized as a special case
//! by the rustversion::attr macro.
//!
//! ```
//! use std::time::Duration;
//!
//! #[rustversion::attr(since(1.32), const)]
//! fn duration_as_days(dur: Duration) -> u64 {
//! dur.as_secs() / 60 / 60 / 24
//! }
//! ```
//!
//! Emitting Cargo cfg directives from a build script. Note that this requires
//! listing `rustversion` under `[build-dependencies]` in Cargo.toml, not
//! `[dependencies]`.
//!
//! ```
//! // build.rs
//!
//! fn main() {
//! if rustversion::cfg!(since(1.36)) {
//! println!("cargo:rustc-cfg=no_std");
//! }
//! }
//! ```
//!
//! ```
//! // src/lib.rs
//!
//! #![cfg_attr(no_std, no_std)]
//!
//! #[cfg(no_std)]
//! extern crate alloc;
//! ```
//!
//! <br>
#![doc(html_root_url = "https://docs.rs/rustversion/1.0.22")]
#![allow(
clippy::cast_lossless,
clippy::cast_possible_truncation,
clippy::derive_partial_eq_without_eq,
clippy::doc_markdown,
clippy::enum_glob_use,
clippy::from_iter_instead_of_collect,
// https://github.com/rust-lang/rust-clippy/issues/8539
clippy::iter_with_drain,
clippy::module_name_repetitions,
clippy::must_use_candidate,
clippy::needless_doctest_main,
clippy::needless_pass_by_value,
clippy::redundant_else,
clippy::toplevel_ref_arg,
clippy::unreadable_literal
)]
extern crate proc_macro;
mod attr;
mod bound;
mod constfn;
mod date;
mod error;
mod expand;
mod expr;
mod iter;
mod release;
mod time;
mod token;
mod version;
use crate::error::Error;
use crate::version::Version;
use proc_macro::TokenStream;
#[cfg(not(host_os = "windows"))]
const RUSTVERSION: Version = include!(concat!(env!("OUT_DIR"), "/version.expr"));
#[cfg(host_os = "windows")]
const RUSTVERSION: Version = include!(concat!(env!("OUT_DIR"), "\\version.expr"));
#[proc_macro_attribute]
pub fn stable(args: TokenStream, input: TokenStream) -> TokenStream {
expand::cfg("stable", args, input)
}
#[proc_macro_attribute]
pub fn beta(args: TokenStream, input: TokenStream) -> TokenStream {
expand::cfg("beta", args, input)
}
#[proc_macro_attribute]
pub fn nightly(args: TokenStream, input: TokenStream) -> TokenStream {
expand::cfg("nightly", args, input)
}
#[proc_macro_attribute]
pub fn since(args: TokenStream, input: TokenStream) -> TokenStream {
expand::cfg("since", args, input)
}
#[proc_macro_attribute]
pub fn before(args: TokenStream, input: TokenStream) -> TokenStream {
expand::cfg("before", args, input)
}
#[proc_macro_attribute]
pub fn not(args: TokenStream, input: TokenStream) -> TokenStream {
expand::cfg("not", args, input)
}
#[proc_macro_attribute]
pub fn any(args: TokenStream, input: TokenStream) -> TokenStream {
expand::cfg("any", args, input)
}
#[proc_macro_attribute]
pub fn all(args: TokenStream, input: TokenStream) -> TokenStream {
expand::cfg("all", args, input)
}
#[proc_macro_attribute]
pub fn attr(args: TokenStream, input: TokenStream) -> TokenStream {
attr::parse(args)
.and_then(|args| expand::try_attr(args, input))
.unwrap_or_else(Error::into_compile_error)
}
#[cfg(not(cfg_macro_not_allowed))]
#[proc_macro]
pub fn cfg(input: TokenStream) -> TokenStream {
use proc_macro::{Ident, Span, TokenTree};
(|| {
let ref mut args = iter::new(input);
let expr = expr::parse(args)?;
token::parse_end(args)?;
let boolean = expr.eval(RUSTVERSION);
let ident = Ident::new(&boolean.to_string(), Span::call_site());
Ok(TokenStream::from(TokenTree::Ident(ident)))
})()
.unwrap_or_else(Error::into_compile_error)
}

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use crate::error::{Error, Result};
use crate::iter::Iter;
use crate::token;
use proc_macro::Group;
#[derive(Copy, Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
pub struct Release {
pub minor: u16,
pub patch: Option<u16>,
}
pub fn parse(paren: Group, iter: Iter) -> Result<Release> {
try_parse(iter).map_err(|()| Error::group(paren, "expected rustc release number, like 1.31"))
}
fn try_parse(iter: Iter) -> Result<Release, ()> {
let major_minor = token::parse_literal(iter).map_err(drop)?;
let string = major_minor.to_string();
if !string.starts_with("1.") {
return Err(());
}
let minor: u16 = string[2..].parse().map_err(drop)?;
let patch = if token::parse_optional_punct(iter, '.').is_some() {
let int = token::parse_literal(iter).map_err(drop)?;
Some(int.to_string().parse().map_err(drop)?)
} else {
None
};
Ok(Release { minor, patch })
}

51
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use crate::date::Date;
use std::env;
use std::time::{SystemTime, UNIX_EPOCH};
// Timestamp of 2016-03-01 00:00:00 in UTC.
const BASE: u64 = 1456790400;
const BASE_YEAR: u16 = 2016;
const BASE_MONTH: u8 = 3;
// Days between leap days.
const CYCLE: u64 = 365 * 4 + 1;
const DAYS_BY_MONTH: [u8; 12] = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
pub fn today() -> Date {
let default = Date {
year: 2025,
month: 2,
day: 25,
};
try_today().unwrap_or(default)
}
fn try_today() -> Option<Date> {
if let Some(pkg_name) = env::var_os("CARGO_PKG_NAME") {
if pkg_name.to_str() == Some("rustversion-tests") {
return None; // Stable date for ui testing.
}
}
let now = SystemTime::now();
let since_epoch = now.duration_since(UNIX_EPOCH).ok()?;
let secs = since_epoch.as_secs();
let approx_days = secs.checked_sub(BASE)? / 60 / 60 / 24;
let cycle = approx_days / CYCLE;
let mut rem = approx_days % CYCLE;
let mut year = BASE_YEAR + cycle as u16 * 4;
let mut month = BASE_MONTH;
loop {
let days_in_month = DAYS_BY_MONTH[month as usize - 1];
if rem < days_in_month as u64 {
let day = rem as u8 + 1;
return Some(Date { year, month, day });
}
rem -= days_in_month as u64;
year += (month == 12) as u16;
month = month % 12 + 1;
}
}

78
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use crate::error::{Error, Result};
use crate::iter::Iter;
use proc_macro::{Delimiter, Group, Ident, Literal, Span, TokenTree};
pub fn parse_punct(iter: Iter, ch: char) -> Result<()> {
match iter.next() {
Some(TokenTree::Punct(ref punct)) if punct.as_char() == ch => Ok(()),
unexpected => {
let span = unexpected
.as_ref()
.map_or_else(Span::call_site, TokenTree::span);
Err(Error::new(span, format!("expected `{}`", ch)))
}
}
}
pub fn parse_optional_punct(iter: Iter, ch: char) -> Option<()> {
match iter.peek() {
Some(TokenTree::Punct(punct)) if punct.as_char() == ch => iter.next().map(drop),
_ => None,
}
}
pub fn parse_optional_keyword(iter: Iter, keyword: &str) -> Option<Span> {
match iter.peek() {
Some(TokenTree::Ident(ident)) if ident.to_string() == keyword => {
Some(iter.next().unwrap().span())
}
_ => None,
}
}
pub fn parse_literal(iter: Iter) -> Result<Literal> {
match iter.next() {
Some(TokenTree::Literal(literal)) => Ok(literal),
unexpected => {
let span = unexpected
.as_ref()
.map_or_else(Span::call_site, TokenTree::span);
Err(Error::new(span, "expected literal"))
}
}
}
pub fn parse_paren(introducer: &Ident, iter: Iter) -> Result<Group> {
match iter.peek() {
Some(TokenTree::Group(group)) if group.delimiter() == Delimiter::Parenthesis => {
match iter.next() {
Some(TokenTree::Group(group)) => Ok(group),
_ => unreachable!(),
}
}
Some(unexpected) => Err(Error::new(unexpected.span(), "expected `(`")),
None => Err(Error::new(
introducer.span(),
format!("expected `(` after `{}`", introducer),
)),
}
}
pub fn parse_optional_paren(iter: Iter) -> Option<Group> {
match iter.peek() {
Some(TokenTree::Group(group)) if group.delimiter() == Delimiter::Parenthesis => {
match iter.next() {
Some(TokenTree::Group(group)) => Some(group),
_ => unreachable!(),
}
}
_ => None,
}
}
pub fn parse_end(iter: Iter) -> Result<()> {
match iter.next() {
None => Ok(()),
Some(unexpected) => Err(Error::new(unexpected.span(), "unexpected token")),
}
}

18
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#![allow(dead_code)]
use crate::date::Date;
#[derive(Copy, Clone, Debug, PartialEq)]
pub struct Version {
pub minor: u16,
pub patch: u16,
pub channel: Channel,
}
#[derive(Copy, Clone, Debug, PartialEq)]
pub enum Channel {
Stable,
Beta,
Nightly(Date),
Dev,
}

7
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#[rustversion::attr(not(nightly), ignore = "requires nightly")]
#[cfg_attr(miri, ignore = "incompatible with miri")]
#[test]
fn ui() {
let t = trybuild::TestCases::new();
t.compile_fail("tests/ui/*.rs");
}

42
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#![allow(
clippy::semicolon_if_nothing_returned, // https://github.com/rust-lang/rust-clippy/issues/7324
clippy::used_underscore_items,
)]
#[rustversion::attr(all(), const)]
fn _basic() {}
const _BASIC: () = _basic();
#[rustversion::attr(all(), const)]
unsafe fn _unsafe() {}
const _UNSAFE: () = unsafe { _unsafe() };
macro_rules! item {
($i:item) => {
#[rustversion::attr(all(), const)]
$i
};
}
item! {fn _item() {}}
const _ITEM: () = _item();
macro_rules! ident {
($fn:ident) => {
#[rustversion::attr(all(), const)]
$fn _ident() {}
};
}
ident! {fn}
const _IDENT: () = _ident();
#[rustversion::attr(all(), const)]
/// doc
fn _doc_below() {}
const _DOC_BELOW: () = _doc_below();
/// doc
#[rustversion::attr(all(), const)]
fn _doc_above() {}
const _DOC_ABOVE: () = _doc_above();

20
vendor/rustversion/tests/test_eval.rs vendored Normal file
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@@ -0,0 +1,20 @@
#[rustversion::any(
stable,
stable(1.34),
stable(1.34.0),
beta,
nightly,
nightly(2020-02-25),
since(1.34),
since(2020-02-25),
before(1.34),
before(2020-02-25),
not(nightly),
all(stable, beta, nightly),
)]
fn success() {}
#[test]
fn test() {
success();
}

103
vendor/rustversion/tests/test_parse.rs vendored Normal file
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@@ -0,0 +1,103 @@
#![allow(
clippy::derive_partial_eq_without_eq,
clippy::enum_glob_use,
clippy::must_use_candidate
)]
include!("../build/rustc.rs");
#[test]
fn test_parse() {
let cases = &[
(
"rustc 1.0.0 (a59de37e9 2015-05-13) (built 2015-05-14)",
Version {
minor: 0,
patch: 0,
channel: Stable,
},
),
(
"rustc 1.18.0",
Version {
minor: 18,
patch: 0,
channel: Stable,
},
),
(
"rustc 1.24.1 (d3ae9a9e0 2018-02-27)",
Version {
minor: 24,
patch: 1,
channel: Stable,
},
),
(
"rustc 1.35.0-beta.3 (c13114dc8 2019-04-27)",
Version {
minor: 35,
patch: 0,
channel: Beta,
},
),
(
"rustc 1.36.0-nightly (938d4ffe1 2019-04-27)",
Version {
minor: 36,
patch: 0,
channel: Nightly(Date {
year: 2019,
month: 4,
day: 27,
}),
},
),
(
"rustc 1.36.0-dev",
Version {
minor: 36,
patch: 0,
channel: Dev,
},
),
(
"rustc 1.36.0-nightly",
Version {
minor: 36,
patch: 0,
channel: Dev,
},
),
(
"warning: invalid logging spec 'warning', ignoring it
rustc 1.30.0-nightly (3bc2ca7e4 2018-09-20)",
Version {
minor: 30,
patch: 0,
channel: Nightly(Date {
year: 2018,
month: 9,
day: 20,
}),
},
),
(
"rustc 1.52.1-nightly (gentoo)",
Version {
minor: 52,
patch: 1,
channel: Dev,
},
),
];
for (string, expected) in cases {
match parse(string) {
ParseResult::Success(version) => assert_eq!(version, *expected),
ParseResult::OopsClippy | ParseResult::OopsMirai | ParseResult::Unrecognized => {
panic!("unrecognized: {:?}", string);
}
}
}
}

7
vendor/rustversion/tests/ui/bad-bound.rs vendored Normal file
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@@ -0,0 +1,7 @@
#[rustversion::since(stable)]
struct S;
#[rustversion::any(since(stable))]
struct S;
fn main() {}

11
vendor/rustversion/tests/ui/bad-bound.stderr vendored Normal file
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@@ -0,0 +1,11 @@
error: expected rustc release number like 1.85, or nightly date like 2025-02-25
--> tests/ui/bad-bound.rs:1:22
|
1 | #[rustversion::since(stable)]
| ^^^^^^
error: expected rustc release number like 1.85, or nightly date like 2025-02-25
--> tests/ui/bad-bound.rs:4:26
|
4 | #[rustversion::any(since(stable))]
| ^^^^^^

7
vendor/rustversion/tests/ui/bad-date.rs vendored Normal file
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@@ -0,0 +1,7 @@
#[rustversion::nightly(stable)]
struct S;
#[rustversion::any(nightly(stable))]
struct S;
fn main() {}

11
vendor/rustversion/tests/ui/bad-date.stderr vendored Normal file
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@@ -0,0 +1,11 @@
error: expected nightly date, like 2025-02-25
--> tests/ui/bad-date.rs:1:24
|
1 | #[rustversion::nightly(stable)]
| ^^^^^^
error: expected nightly date, like 2025-02-25
--> tests/ui/bad-date.rs:4:28
|
4 | #[rustversion::any(nightly(stable))]
| ^^^^^^

7
vendor/rustversion/tests/ui/bad-not.rs vendored Normal file
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@@ -0,0 +1,7 @@
#[rustversion::any(not)]
struct S;
#[rustversion::any(not, not)]
struct S;
fn main() {}

11
vendor/rustversion/tests/ui/bad-not.stderr vendored Normal file
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@@ -0,0 +1,11 @@
error: expected `(` after `not`
--> tests/ui/bad-not.rs:1:20
|
1 | #[rustversion::any(not)]
| ^^^
error: expected `(`
--> tests/ui/bad-not.rs:4:23
|
4 | #[rustversion::any(not, not)]
| ^

7
vendor/rustversion/tests/ui/bad-version.rs vendored Normal file
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@@ -0,0 +1,7 @@
#[rustversion::stable(nightly)]
struct S;
#[rustversion::any(stable(nightly))]
struct S;
fn main() {}

11
vendor/rustversion/tests/ui/bad-version.stderr vendored Normal file
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@@ -0,0 +1,11 @@
error: expected rustc release number, like 1.31
--> tests/ui/bad-version.rs:1:23
|
1 | #[rustversion::stable(nightly)]
| ^^^^^^^
error: expected rustc release number, like 1.31
--> tests/ui/bad-version.rs:4:27
|
4 | #[rustversion::any(stable(nightly))]
| ^^^^^^^

4
vendor/rustversion/tests/ui/const-not-fn.rs vendored Normal file
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@@ -0,0 +1,4 @@
#[rustversion::attr(all(), const)]
pub struct S;
fn main() {}

5
vendor/rustversion/tests/ui/const-not-fn.stderr vendored Normal file
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@@ -0,0 +1,5 @@
error: only allowed on a fn item
--> tests/ui/const-not-fn.rs:1:28
|
1 | #[rustversion::attr(all(), const)]
| ^^^^^