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John Doty 2024-03-08 11:03:01 -08:00
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{"files":{"Cargo.toml":"9c8ebdae8c4ca651ae8a15b4438668c74cb8e0bf6cd06b785e540f6117852d2a","LICENSE-APACHE":"62c7a1e35f56406896d7aa7ca52d0cc0d272ac022b5d2796e7d6905db8a3636a","LICENSE-MIT":"23f18e03dc49df91622fe2a76176497404e46ced8a715d9d2b67a7446571cca3","README.md":"9ba51325297bd22446d8cc89b60e10aaedc0a248ddaad9f12322e233032ac595","build/build.rs":"a5ac3f88a152167bdf624d18346b6db6459828bdbd1162a275fcde9c36e3ade6","build/rustc.rs":"0de80a0590facf36d76fa89c566789c774f5bfc3b787fe8d5b61f668deaed3f9","src/attr.rs":"9301cd4aff5a9648c057d5d8de9eb66921f0c3a715c51ada4459576bd49c8b19","src/bound.rs":"44bda74d3aacfeeeac9dae2f7eef3acc844d4c3c7eaa9d3e6288e5aeff269dff","src/constfn.rs":"613b8f53b21cc06b4f619fce9000993d3e7873b650701ca01cef1e53bed5b40a","src/date.rs":"454c749a60db8144a706a813e06fe3ae39c981920ba9832ef82f3f9debe1f052","src/error.rs":"cb37102f03ebbaca313d80f9714fe08dfef92fe956789ee87d93eb6121705f4f","src/expand.rs":"cfd1772b1af090532de1f318e1b61cc79c8004941a8c56a1a7f4962324b81c9d","src/expr.rs":"8e8ca76f4f5838436d9d7273f499c698bb41f6c15bc07d32ec5c1cb8bd3dd731","src/iter.rs":"8d4b817b9abc4e817105b673e15f29ef9bb8284a010ce01ac2d83387fe136947","src/lib.rs":"39d1d6b9c7837f15a5028d225d3538d33e6331e880b7844f7e3c1c0a2be0de06","src/release.rs":"abb8ddd877c39a023bf5e7bd67063d6e4144e79758a8bafa338167f9d15b89f1","src/time.rs":"bdd05a743b07a6bbfa0dbc9d4e415e051aba4a51a430c3be1e23447eae298c8b","src/token.rs":"824ce765f692db73afa02d3ebb0281c750748035efc98fa547be29d3072665ce","src/version.rs":"afdb048bba95bbb885945eba5527b6bf0eca0105642bfc304c2f82a8b7d556df","tests/compiletest.rs":"022a8e400ef813d7ea1875b944549cee5125f6a995dc33e93b48cba3e1b57bd1","tests/test_const.rs":"44d72ea92a81544692ccabe7e93f5d560d29828e79835e9f9839fbb40acc499a","tests/test_eval.rs":"6f0ee3f49c9a0d0c374a4d0e9a9dce753cd9fc2ca7725e000a435dbd5f4a9ce3","tests/test_parse.rs":"a9d262ea18109f792da719c29f3434a2f6a5e5723286385a099359795495b6fb","tests/ui/bad-bound.rs":"25bde278fcaabf62868417148a5e5f2006bf589d7ebd7bf6004fb8d78e47594f","tests/ui/bad-bound.stderr":"96b5549a312cd64d503c560026a6f0e97ac2173fe7c136a14425f19dcb5968e3","tests/ui/bad-date.rs":"6e23714dae8b6346fefe50dacd4abba3265248bbadfdd60c739138aa8a0037ba","tests/ui/bad-date.stderr":"3cc6d10572b80d397954737340d444c541d2c0e54e7d26495861d6189b6b2a55","tests/ui/bad-not.rs":"f003df8bd245e9dd8edc3a6d94078ee5162fac7a98db881271f0f5b6db98d45d","tests/ui/bad-not.stderr":"1aebb3121d067d432a32dd95ff380ceac15a0531c34f90cee950582558841c56","tests/ui/bad-version.rs":"f4ea2cd038e6c63deb9c2e3ceffce93dbf179d9ce18c16d88f3b6cd7138a8c8e","tests/ui/bad-version.stderr":"e9421586d59cb9135123bd97710655014f95cc5f55b0f9611e1d2e8ce9e29a5d","tests/ui/const-not-fn.rs":"10bbe38f0d89391fff0698756e4cfd4e72a41090360393a0c951b67df14d1c35","tests/ui/const-not-fn.stderr":"1180662fd3b8c4426d46923918a2e58dd9b6259f1a364469ae13d5fc3d69ce6c"},"package":"7ffc183a10b4478d04cbbbfc96d0873219d962dd5accaff2ffbd4ceb7df837f4"}

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# THIS FILE IS AUTOMATICALLY GENERATED BY CARGO
#
# When uploading crates to the registry Cargo will automatically
# "normalize" Cargo.toml files for maximal compatibility
# with all versions of Cargo and also rewrite `path` dependencies
# to registry (e.g., crates.io) dependencies.
#
# If you are reading this file be aware that the original Cargo.toml
# will likely look very different (and much more reasonable).
# See Cargo.toml.orig for the original contents.
[package]
edition = "2018"
rust-version = "1.31"
name = "rustversion"
version = "1.0.14"
authors = ["David Tolnay <dtolnay@gmail.com>"]
build = "build/build.rs"
description = "Conditional compilation according to rustc compiler version"
documentation = "https://docs.rs/rustversion"
readme = "README.md"
categories = [
"development-tools::build-utils",
"no-std",
"no-std::no-alloc",
]
license = "MIT OR Apache-2.0"
repository = "https://github.com/dtolnay/rustversion"
[package.metadata.docs.rs]
rustdoc-args = ["--generate-link-to-definition"]
targets = ["x86_64-unknown-linux-gnu"]
[lib]
proc-macro = true
[dev-dependencies.trybuild]
version = "1.0.49"
features = ["diff"]

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Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
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Permission is hereby granted, free of charge, to any
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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(2019-01-01)]`</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(2019-01-01)]`</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`.
<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
}
```
<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::enum_glob_use,
clippy::must_use_candidate,
clippy::single_match_else
)]
mod rustc;
use std::env;
use std::ffi::OsString;
use std::fs;
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 mut is_clippy_driver = false;
let version = loop {
let mut command = Command::new(&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::Unrecognized | rustc::ParseResult::OopsClippy => {
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");
}
let version = format!("{:#?}\n", 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");
}

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use self::Channel::*;
use std::fmt::{self, Debug};
pub enum ParseResult {
Success(Version),
OopsClippy,
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(_) | 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(channel) if channel == "dev" => Dev,
Some(channel) if channel.starts_with("beta") => Beta,
Some(channel) if channel == "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 1.31, 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(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);
}
match args.then {
Then::Const(const_token) => constfn::insert_const(input, const_token),
Then::Attribute(then) => {
// #[cfg_attr(all(), #then)]
Ok(TokenStream::from_iter(
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),
))
}
}
}

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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),
}
}
}
}

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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>#[rustversion::stable]</code></b>
//! —<br>
//! True on any stable compiler.
//! </p>
//!
//! - <p style="margin-left:50px;text-indent:-50px">
//! <b><code>#[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>#[rustversion::beta]</code></b>
//! —<br>
//! True on any beta compiler.
//! </p>
//!
//! - <p style="margin-left:50px;text-indent:-50px">
//! <b><code>#[rustversion::nightly]</code></b>
//! —<br>
//! True on any nightly compiler or dev build.
//! </p>
//!
//! - <p style="margin-left:50px;text-indent:-50px">
//! <b><code>#[rustversion::nightly(2019-01-01)]</code></b>
//! —<br>
//! True on exactly one nightly.
//! </p>
//!
//! - <p style="margin-left:50px;text-indent:-50px">
//! <b><code>#[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>#[rustversion::since(2019-01-01)]</code></b>
//! —<br>
//! True on that nightly and all newer ones.
//! </p>
//!
//! - <p style="margin-left:50px;text-indent:-50px">
//! <b><code>#[rustversion::before(</code></b><i>version or date</i><b><code>)]</code></b>
//! —<br>
//! Negative of <i>#[rustversion::since(...)]</i>.
//! </p>
//!
//! - <p style="margin-left:50px;text-indent:-50px">
//! <b><code>#[rustversion::not(</code></b><i>selector</i><b><code>)]</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>#[rustversion::any(</code></b><i>selectors...</i><b><code>)]</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>#[rustversion::all(</code></b><i>selectors...</i><b><code>)]</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>#[rustversion::attr(</code></b><i>selector</i><b><code>, </code></b><i>attribute</i><b><code>)]</code></b>
//! —<br>
//! For conditional inclusion of attributes; analogous to
//! <code>cfg_attr</code>.
//! </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
//! }
//! ```
//!
//! <br>
#![doc(html_root_url = "https://docs.rs/rustversion/1.0.14")]
#![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;
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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third-party/vendor/rustversion/src/release.rs vendored Normal file
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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
third-party/vendor/rustversion/src/time.rs vendored Normal file
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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: 2020,
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
third-party/vendor/rustversion/src/token.rs vendored Normal file
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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
third-party/vendor/rustversion/src/version.rs vendored Normal file
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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
third-party/vendor/rustversion/tests/compiletest.rs vendored Normal file
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#[rustversion::attr(not(nightly), ignore)]
#[cfg_attr(miri, ignore)]
#[test]
fn ui() {
let t = trybuild::TestCases::new();
t.compile_fail("tests/ui/*.rs");
}

39
third-party/vendor/rustversion/tests/test_const.rs vendored Normal file
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#![allow(clippy::semicolon_if_nothing_returned)] // https://github.com/rust-lang/rust-clippy/issues/7324
#[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
third-party/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
third-party/vendor/rustversion/tests/test_parse.rs vendored Normal file
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#![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::Unrecognized => {
panic!("unrecognized: {:?}", string);
}
}
}
}

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

11
third-party/vendor/rustversion/tests/ui/bad-bound.stderr vendored Normal file
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@ -0,0 +1,11 @@
error: expected rustc release number like 1.31, or nightly date like 2020-02-25
--> tests/ui/bad-bound.rs:1:22
|
1 | #[rustversion::since(stable)]
| ^^^^^^
error: expected rustc release number like 1.31, or nightly date like 2020-02-25
--> tests/ui/bad-bound.rs:4:26
|
4 | #[rustversion::any(since(stable))]
| ^^^^^^

7
third-party/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
third-party/vendor/rustversion/tests/ui/bad-date.stderr vendored Normal file
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@ -0,0 +1,11 @@
error: expected nightly date, like 2020-02-25
--> tests/ui/bad-date.rs:1:24
|
1 | #[rustversion::nightly(stable)]
| ^^^^^^
error: expected nightly date, like 2020-02-25
--> tests/ui/bad-date.rs:4:28
|
4 | #[rustversion::any(nightly(stable))]
| ^^^^^^

7
third-party/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
third-party/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
third-party/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
third-party/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
third-party/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
third-party/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)]
| ^^^^^