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Initial vendor packages

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Signed-off-by: Valentin Popov <valentin@popov.link>
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Valentin Popov
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{"files":{"Cargo.toml":"5b2a8f6e5256957c029cf3a8912d51438e7faa5891c5c102c312f6d4599c1f00","LICENSE-APACHE":"a60eea817514531668d7e00765731449fe14d059d3249e0bc93b36de45f759f2","LICENSE-MIT":"378f5840b258e2779c39418f3f2d7b2ba96f1c7917dd6be0713f88305dbda397","README.md":"2406e83ee174e30aa67f8ab266836fa78545012b196395aff37c152321e2c713","src/lib.rs":"54b0f108b0dc48a077c52c0bcd22b64ef4de083e5e2b7d405e50ae4d78224f1b","tests/xcrate.rs":"c0734dae6e63beafcd60bf53546115a2320735b51035c9e2387fdf9301580934"},"package":"baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"}

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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 believe there's an error in this file please file an
# issue against the rust-lang/cargo repository. If you're
# editing this file be aware that the upstream Cargo.toml
# will likely look very different (and much more reasonable)
[package]
edition = "2018"
name = "cfg-if"
version = "1.0.0"
authors = ["Alex Crichton <alex@alexcrichton.com>"]
description = "A macro to ergonomically define an item depending on a large number of #[cfg]\nparameters. Structured like an if-else chain, the first matching branch is the\nitem that gets emitted.\n"
homepage = "https://github.com/alexcrichton/cfg-if"
documentation = "https://docs.rs/cfg-if"
readme = "README.md"
license = "MIT/Apache-2.0"
repository = "https://github.com/alexcrichton/cfg-if"
[dependencies.compiler_builtins]
version = "0.1.2"
optional = true
[dependencies.core]
version = "1.0.0"
optional = true
package = "rustc-std-workspace-core"
[features]
rustc-dep-of-std = ["core", "compiler_builtins"]
[badges.travis-ci]
repository = "alexcrichton/cfg-if"

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Copyright (c) 2014 Alex Crichton
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# cfg-if
[Documentation](https://docs.rs/cfg-if)
A macro to ergonomically define an item depending on a large number of #[cfg]
parameters. Structured like an if-else chain, the first matching branch is the
item that gets emitted.
```toml
[dependencies]
cfg-if = "0.1"
```
## Example
```rust
cfg_if::cfg_if! {
if #[cfg(unix)] {
fn foo() { /* unix specific functionality */ }
} else if #[cfg(target_pointer_width = "32")] {
fn foo() { /* non-unix, 32-bit functionality */ }
} else {
fn foo() { /* fallback implementation */ }
}
}
fn main() {
foo();
}
```
# License
This project is licensed under either of
* Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
http://www.apache.org/licenses/LICENSE-2.0)
* MIT license ([LICENSE-MIT](LICENSE-MIT) or
http://opensource.org/licenses/MIT)
at your option.
### Contribution
Unless you explicitly state otherwise, any contribution intentionally submitted
for inclusion in `cfg-if` by you, as defined in the Apache-2.0 license, shall be
dual licensed as above, without any additional terms or conditions.

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//! A macro for defining `#[cfg]` if-else statements.
//!
//! The macro provided by this crate, `cfg_if`, is similar to the `if/elif` C
//! preprocessor macro by allowing definition of a cascade of `#[cfg]` cases,
//! emitting the implementation which matches first.
//!
//! This allows you to conveniently provide a long list `#[cfg]`'d blocks of code
//! without having to rewrite each clause multiple times.
//!
//! # Example
//!
//! ```
//! cfg_if::cfg_if! {
//! if #[cfg(unix)] {
//! fn foo() { /* unix specific functionality */ }
//! } else if #[cfg(target_pointer_width = "32")] {
//! fn foo() { /* non-unix, 32-bit functionality */ }
//! } else {
//! fn foo() { /* fallback implementation */ }
//! }
//! }
//!
//! # fn main() {}
//! ```
#![no_std]
#![doc(html_root_url = "https://docs.rs/cfg-if")]
#![deny(missing_docs)]
#![cfg_attr(test, deny(warnings))]
/// The main macro provided by this crate. See crate documentation for more
/// information.
#[macro_export]
macro_rules! cfg_if {
// match if/else chains with a final `else`
($(
if #[cfg($meta:meta)] { $($tokens:tt)* }
) else * else {
$($tokens2:tt)*
}) => {
$crate::cfg_if! {
@__items
() ;
$( ( ($meta) ($($tokens)*) ), )*
( () ($($tokens2)*) ),
}
};
// match if/else chains lacking a final `else`
(
if #[cfg($i_met:meta)] { $($i_tokens:tt)* }
$(
else if #[cfg($e_met:meta)] { $($e_tokens:tt)* }
)*
) => {
$crate::cfg_if! {
@__items
() ;
( ($i_met) ($($i_tokens)*) ),
$( ( ($e_met) ($($e_tokens)*) ), )*
( () () ),
}
};
// Internal and recursive macro to emit all the items
//
// Collects all the negated cfgs in a list at the beginning and after the
// semicolon is all the remaining items
(@__items ($($not:meta,)*) ; ) => {};
(@__items ($($not:meta,)*) ; ( ($($m:meta),*) ($($tokens:tt)*) ), $($rest:tt)*) => {
// Emit all items within one block, applying an appropriate #[cfg]. The
// #[cfg] will require all `$m` matchers specified and must also negate
// all previous matchers.
#[cfg(all($($m,)* not(any($($not),*))))] $crate::cfg_if! { @__identity $($tokens)* }
// Recurse to emit all other items in `$rest`, and when we do so add all
// our `$m` matchers to the list of `$not` matchers as future emissions
// will have to negate everything we just matched as well.
$crate::cfg_if! { @__items ($($not,)* $($m,)*) ; $($rest)* }
};
// Internal macro to make __apply work out right for different match types,
// because of how macros matching/expand stuff.
(@__identity $($tokens:tt)*) => {
$($tokens)*
};
}
#[cfg(test)]
mod tests {
cfg_if! {
if #[cfg(test)] {
use core::option::Option as Option2;
fn works1() -> Option2<u32> { Some(1) }
} else {
fn works1() -> Option<u32> { None }
}
}
cfg_if! {
if #[cfg(foo)] {
fn works2() -> bool { false }
} else if #[cfg(test)] {
fn works2() -> bool { true }
} else {
fn works2() -> bool { false }
}
}
cfg_if! {
if #[cfg(foo)] {
fn works3() -> bool { false }
} else {
fn works3() -> bool { true }
}
}
cfg_if! {
if #[cfg(test)] {
use core::option::Option as Option3;
fn works4() -> Option3<u32> { Some(1) }
}
}
cfg_if! {
if #[cfg(foo)] {
fn works5() -> bool { false }
} else if #[cfg(test)] {
fn works5() -> bool { true }
}
}
#[test]
fn it_works() {
assert!(works1().is_some());
assert!(works2());
assert!(works3());
assert!(works4().is_some());
assert!(works5());
}
#[test]
#[allow(clippy::assertions_on_constants)]
fn test_usage_within_a_function() {
cfg_if! {if #[cfg(debug_assertions)] {
// we want to put more than one thing here to make sure that they
// all get configured properly.
assert!(cfg!(debug_assertions));
assert_eq!(4, 2+2);
} else {
assert!(works1().is_some());
assert_eq!(10, 5+5);
}}
}
trait Trait {
fn blah(&self);
}
#[allow(dead_code)]
struct Struct;
impl Trait for Struct {
cfg_if! {
if #[cfg(feature = "blah")] {
fn blah(&self) {
unimplemented!();
}
} else {
fn blah(&self) {
unimplemented!();
}
}
}
}
}

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cfg_if::cfg_if! {
if #[cfg(foo)] {
fn works() -> bool { false }
} else if #[cfg(test)] {
fn works() -> bool { true }
} else {
fn works() -> bool { false }
}
}
#[test]
fn smoke() {
assert!(works());
}