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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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Copyright (c) 2018, Daniel Wagner-Hall
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
* Neither the name of num_enum nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

23
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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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# num_enum
Procedural macros to make inter-operation between primitives and enums easier.
This crate is no_std compatible.
[![crates.io](https://img.shields.io/crates/v/num_enum.svg)](https://crates.io/crates/num_enum)
[![Documentation](https://docs.rs/num_enum/badge.svg)](https://docs.rs/num_enum)
[![Build Status](https://travis-ci.org/illicitonion/num_enum.svg?branch=master)](https://travis-ci.org/illicitonion/num_enum)
## Turning an enum into a primitive
```rust
use num_enum::IntoPrimitive;
#[derive(IntoPrimitive)]
#[repr(u8)]
enum Number {
Zero,
One,
}
fn main() {
let zero: u8 = Number::Zero.into();
assert_eq!(zero, 0u8);
}
```
`num_enum`'s `IntoPrimitive` is more type-safe than using `as`, because `as` will silently truncate - `num_enum` only derives `From` for exactly the discriminant type of the enum.
## Attempting to turn a primitive into an enum with try_from
```rust
use num_enum::TryFromPrimitive;
use std::convert::TryFrom;
#[derive(Debug, Eq, PartialEq, TryFromPrimitive)]
#[repr(u8)]
enum Number {
Zero,
One,
}
fn main() {
let zero = Number::try_from(0u8);
assert_eq!(zero, Ok(Number::Zero));
let three = Number::try_from(3u8);
assert_eq!(
three.unwrap_err().to_string(),
"No discriminant in enum `Number` matches the value `3`",
);
}
```
### Variant alternatives
Sometimes a single enum variant might be representable by multiple numeric values.
The `#[num_enum(alternatives = [..])]` attribute allows you to define additional value alternatives for individual variants.
(The behavior of `IntoPrimitive` is unaffected by this attribute, it will always return the canonical value.)
```rust
use num_enum::TryFromPrimitive;
use std::convert::TryFrom;
#[derive(Debug, Eq, PartialEq, TryFromPrimitive)]
#[repr(u8)]
enum Number {
Zero = 0,
#[num_enum(alternatives = [2])]
OneOrTwo = 1,
}
fn main() {
let zero = Number::try_from(0u8);
assert_eq!(zero, Ok(Number::Zero));
let one = Number::try_from(1u8);
assert_eq!(one, Ok(Number::OneOrTwo));
let two = Number::try_from(2u8);
assert_eq!(two, Ok(Number::OneOrTwo));
let three = Number::try_from(3u8);
assert_eq!(
three.unwrap_err().to_string(),
"No discriminant in enum `Number` matches the value `3`",
);
}
```
Range expressions are also supported for alternatives, but this requires enabling the `complex-expressions` feature:
```rust
use num_enum::TryFromPrimitive;
use std::convert::TryFrom;
#[derive(Debug, Eq, PartialEq, TryFromPrimitive)]
#[repr(u8)]
enum Number {
Zero = 0,
#[num_enum(alternatives = [2..16])]
Some = 1,
#[num_enum(alternatives = [17, 18..=255])]
Many = 16,
}
fn main() {
let zero = Number::try_from(0u8);
assert_eq!(zero, Ok(Number::Zero));
let some = Number::try_from(15u8);
assert_eq!(some, Ok(Number::Some));
let many = Number::try_from(255u8);
assert_eq!(many, Ok(Number::Many));
}
```
### Custom error types
`TryFromPrimitive` by default will use `num_enum::TryFromPrimitiveError` as its `Error` type.
If you want to use a different type, you can use an annotation for this:
```rust
use num_enum::TryFromPrimitive;
#[derive(Debug, Eq, PartialEq, TryFromPrimitive)]
#[num_enum(error_type(name = CustomError, constructor = CustomError::new))]
#[repr(u8)]
enum FirstNumber {
Zero,
One,
Two,
}
struct CustomError {}
impl CustomError {
fn new(value: u8) -> CustomError {
CustomError {}
}
}
```
## Safely turning a primitive into an exhaustive enum with from_primitive
If your enum has all possible primitive values covered, you can derive `FromPrimitive` for it (which auto-implement stdlib's `From`):
You can cover all possible values by:
* Having variants for every possible value
* Having a variant marked `#[num_enum(default)]`
* Having a variant marked `#[num_enum(catch_all)]`
* Having `#[num_enum(alternatives = [...])`s covering values not covered by a variant.
```rust
use num_enum::FromPrimitive;
#[derive(Debug, Eq, PartialEq, FromPrimitive)]
#[repr(u8)]
enum Number {
Zero,
#[num_enum(default)]
NonZero,
}
fn main() {
assert_eq!(
Number::Zero,
Number::from(0_u8),
);
assert_eq!(
Number::NonZero,
Number::from(1_u8),
);
}
```
### Default variant
Sometimes it is desirable to have an `Other` variant in an enum that acts as a kind of a wildcard matching all the value not yet covered by other variants.
The `#[num_enum(default)]` attribute (or the stdlib `#[default]` attribute) allows you to mark variant as the default.
(The behavior of `IntoPrimitive` is unaffected by this attribute, it will always return the canonical value.)
```rust
use num_enum::FromPrimitive;
use std::convert::TryFrom;
#[derive(Debug, Eq, PartialEq, FromPrimitive)]
#[repr(u8)]
enum Number {
Zero = 0,
#[num_enum(default)]
NonZero = 1,
}
fn main() {
let zero = Number::from(0u8);
assert_eq!(zero, Number::Zero);
let one = Number::from(1u8);
assert_eq!(one, Number::NonZero);
let two = Number::from(2u8);
assert_eq!(two, Number::NonZero);
}
```
Only `FromPrimitive` pays attention to `default` attributes, `TryFromPrimitive` ignores them.
### Catch-all variant
Sometimes it is desirable to have an `Other` variant which holds the otherwise un-matched value as a field.
The `#[num_enum(catch_all)]` attribute allows you to mark at most one variant for this purpose. The variant it's applied to must be a tuple variant with exactly one field matching the `repr` type.
```rust
use num_enum::FromPrimitive;
use std::convert::TryFrom;
#[derive(Debug, Eq, PartialEq, FromPrimitive)]
#[repr(u8)]
enum Number {
Zero = 0,
#[num_enum(catch_all)]
NonZero(u8),
}
fn main() {
let zero = Number::from(0u8);
assert_eq!(zero, Number::Zero);
let one = Number::from(1u8);
assert_eq!(one, Number::NonZero(1_u8));
let two = Number::from(2u8);
assert_eq!(two, Number::NonZero(2_u8));
}
```
As this is naturally exhaustive, this is only supported for `FromPrimitive`, not also `TryFromPrimitive`.
## Unsafely turning a primitive into an enum with unchecked_transmute_from
If you're really certain a conversion will succeed (and have not made use of `#[num_enum(default)]` or `#[num_enum(alternatives = [..])]`
for any of its variants), and want to avoid a small amount of overhead, you can use unsafe code to do this conversion.
Unless you have data showing that the match statement generated in the `try_from` above is a bottleneck for you,
you should avoid doing this, as the unsafe code has potential to cause serious memory issues in your program.
```rust
use num_enum::UnsafeFromPrimitive;
#[derive(Debug, Eq, PartialEq, UnsafeFromPrimitive)]
#[repr(u8)]
enum Number {
Zero,
One,
}
fn main() {
assert_eq!(
unsafe { Number::unchecked_transmute_from(0_u8) },
Number::Zero,
);
assert_eq!(
unsafe { Number::unchecked_transmute_from(1_u8) },
Number::One,
);
}
unsafe fn undefined_behavior() {
let _ = Number::unchecked_transmute_from(2); // 2 is not a valid discriminant!
}
```
Note that this derive ignores any `default`, `catch_all`, and `alternatives` attributes on the enum.
If you need support for conversions from these values, you should use `TryFromPrimitive` or `FromPrimitive`.
This means, for instance, that the following is undefined behaviour:
```rust,no_run
use num_enum::UnsafeFromPrimitive;
#[derive(UnsafeFromPrimitive)]
#[repr(u8)]
enum Number {
Zero = 0,
// Same for `#[num_enum(catch_all)]`, and `#[num_enum(alternatives = [2, ...])]`
#[num_enum(default)]
One = 1,
}
let _undefined_behavior = unsafe { Number::unchecked_transmute_from(2) };
```
## Optional features
Some enum values may be composed of complex expressions, for example:
```rust
enum Number {
Zero = (0, 1).0,
One = (0, 1).1,
}
```
To cut down on compile time, these are not supported by default, but if you enable the `complex-expressions`
feature of your dependency on `num_enum`, these should start working.
## License
num_enum may be used under your choice of the BSD 3-clause, Apache 2, or MIT license.

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// Wrap this in two cfg_attrs so that it continues to parse pre-1.54.0.
// See https://github.com/rust-lang/rust/issues/82768
#![cfg_attr(feature = "external_doc", cfg_attr(all(), doc = include_str!("../README.md")))]
#![cfg_attr(
not(feature = "external_doc"),
doc = "See <https://docs.rs/num_enum> for more info about this crate."
)]
#![cfg_attr(not(feature = "std"), no_std)]
pub use ::num_enum_derive::{
Default, FromPrimitive, IntoPrimitive, TryFromPrimitive, UnsafeFromPrimitive,
};
use ::core::fmt;
pub trait FromPrimitive: Sized {
type Primitive: Copy + Eq;
fn from_primitive(number: Self::Primitive) -> Self;
}
pub trait TryFromPrimitive: Sized {
type Primitive: Copy + Eq + fmt::Debug;
type Error;
const NAME: &'static str;
fn try_from_primitive(number: Self::Primitive) -> Result<Self, Self::Error>;
}
pub trait UnsafeFromPrimitive: Sized {
type Primitive: Copy + Eq;
/// Transmutes into an enum from its primitive.
///
/// # Safety
///
/// - `number` must represent a valid discriminant of `Self`.
#[deprecated(
since = "0.6.0",
note = "Prefer to use `unchecked_transmute_from`, `from_unchecked` will be removed in a future release."
)]
unsafe fn from_unchecked(number: Self::Primitive) -> Self {
Self::unchecked_transmute_from(number)
}
/// Transmutes into an enum from its primitive.
///
/// # Safety
///
/// - `number` must represent a valid discriminant of `Self`.
unsafe fn unchecked_transmute_from(number: Self::Primitive) -> Self;
}
#[derive(Copy, Clone, PartialEq, Eq)]
pub struct TryFromPrimitiveError<Enum: TryFromPrimitive> {
pub number: Enum::Primitive,
}
impl<Enum: TryFromPrimitive> TryFromPrimitiveError<Enum> {
pub fn new(number: Enum::Primitive) -> Self {
Self { number }
}
}
impl<Enum: TryFromPrimitive> fmt::Debug for TryFromPrimitiveError<Enum> {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
fmt.debug_struct("TryFromPrimitiveError")
.field("number", &self.number)
.finish()
}
}
impl<Enum: TryFromPrimitive> fmt::Display for TryFromPrimitiveError<Enum> {
fn fmt(&self, stream: &'_ mut fmt::Formatter<'_>) -> fmt::Result {
write!(
stream,
"No discriminant in enum `{name}` matches the value `{input:?}`",
name = Enum::NAME,
input = self.number,
)
}
}
#[rustversion::since(1.81)]
impl<Enum: TryFromPrimitive> ::core::error::Error for TryFromPrimitiveError<Enum> {}
#[cfg(feature = "std")]
#[rustversion::before(1.81)]
impl<Enum: TryFromPrimitive> ::std::error::Error for TryFromPrimitiveError<Enum> {}
// This trait exists to try to give a more clear error message when someone attempts to derive both FromPrimitive and TryFromPrimitive.
// This isn't allowed because both end up creating a `TryFrom<primitive>` implementation.
// TryFromPrimitive explicitly implements TryFrom<primitive> with Error=TryFromPrimitiveError, which conflicts with:
// FromPrimitive explicitly implements From<primitive> which has a blanket implementation of TryFrom<primitive> with Error=Infallible.
//
// This is a private implementation detail of the num_enum crate which should not be depended on externally.
// It is subject to change in any release regardless of semver.
#[doc(hidden)]
pub trait CannotDeriveBothFromPrimitiveAndTryFromPrimitive {}

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// Guard against https://github.com/illicitonion/num_enum/issues/27
mod alloc {}
mod core {}
mod num_enum {}
mod std {}
#[test]
fn default() {
#[derive(Debug, Eq, PartialEq, ::num_enum::Default)]
#[repr(u8)]
enum Enum {
#[allow(unused)]
Zero = 0,
#[num_enum(default)]
NonZero = 1,
}
assert_eq!(Enum::NonZero, <Enum as ::core::default::Default>::default());
}
#[test]
fn default_standard_default_attribute() {
#[derive(Debug, Eq, PartialEq, ::num_enum::Default)]
#[repr(u8)]
enum Enum {
#[allow(unused)]
Zero = 0,
#[default]
NonZero = 1,
}
assert_eq!(Enum::NonZero, <Enum as ::core::default::Default>::default());
}

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use ::num_enum::FromPrimitive;
// Guard against https://github.com/illicitonion/num_enum/issues/27
mod alloc {}
mod core {}
mod num_enum {}
mod std {}
macro_rules! has_from_primitive_number {
( $type:ty ) => {
paste::paste! {
#[test]
fn [<has_from_primitive_number_ $type>]() {
#[derive(Debug, Eq, PartialEq, FromPrimitive)]
#[repr($type)]
enum Enum {
Zero = 0,
#[num_enum(default)]
NonZero = 1,
}
let zero = Enum::from_primitive(0 as $type);
assert_eq!(zero, Enum::Zero);
let one = Enum::from_primitive(1 as $type);
assert_eq!(one, Enum::NonZero);
let two = Enum::from_primitive(2 as $type);
assert_eq!(two, Enum::NonZero);
}
}
};
}
has_from_primitive_number!(u8);
has_from_primitive_number!(u16);
has_from_primitive_number!(u32);
has_from_primitive_number!(u64);
has_from_primitive_number!(usize);
has_from_primitive_number!(i8);
has_from_primitive_number!(i16);
has_from_primitive_number!(i32);
has_from_primitive_number!(i64);
has_from_primitive_number!(isize);
// repr with 128-bit type is unstable
// has_from_primitive_number!(u128);
// has_from_primitive_number!(i128);
#[test]
fn has_from_primitive_number_standard_default_attribute() {
#[derive(Debug, Eq, PartialEq, FromPrimitive)]
#[repr(u8)]
enum Enum {
Zero = 0,
#[default]
NonZero = 1,
}
let zero = Enum::from_primitive(0_u8);
assert_eq!(zero, Enum::Zero);
let one = Enum::from_primitive(1_u8);
assert_eq!(one, Enum::NonZero);
let two = Enum::from_primitive(2_u8);
assert_eq!(two, Enum::NonZero);
}
#[test]
fn from_primitive_number() {
#[derive(Debug, Eq, PartialEq, FromPrimitive)]
#[repr(u8)]
enum Enum {
#[num_enum(default)]
Whatever = 0,
}
// #[derive(FromPrimitive)] generates implementations for the following traits:
//
// - `FromPrimitive<T>`
// - `From<T>`
// - `TryFromPrimitive<T>`
// - `TryFrom<T>`
let from_primitive = Enum::from_primitive(0_u8);
assert_eq!(from_primitive, Enum::Whatever);
let from = Enum::from(0_u8);
assert_eq!(from, Enum::Whatever);
let from_primitive = Enum::from_primitive(1_u8);
assert_eq!(from_primitive, Enum::Whatever);
let from = Enum::from(1_u8);
assert_eq!(from, Enum::Whatever);
}
#[test]
fn from_primitive_number_catch_all() {
#[derive(Debug, Eq, PartialEq, FromPrimitive)]
#[repr(u8)]
enum Enum {
Zero = 0,
#[num_enum(catch_all)]
NonZero(u8),
}
let zero = Enum::from_primitive(0_u8);
assert_eq!(zero, Enum::Zero);
let one = Enum::from_primitive(1_u8);
assert_eq!(one, Enum::NonZero(1_u8));
let two = Enum::from_primitive(2_u8);
assert_eq!(two, Enum::NonZero(2_u8));
}
#[test]
fn from_primitive_number_catch_all_in_middle() {
#[derive(Debug, PartialEq, Eq, FromPrimitive)]
#[repr(u8)]
enum Enum {
Zero = 0,
#[num_enum(catch_all)]
Else(u8) = 2,
One = 1,
}
let zero = Enum::from_primitive(0_u8);
assert_eq!(zero, Enum::Zero);
let one = Enum::from_primitive(1_u8);
assert_eq!(one, Enum::One);
let two = Enum::from_primitive(2_u8);
assert_eq!(two, Enum::Else(2_u8));
let three = Enum::from_primitive(3_u8);
assert_eq!(three, Enum::Else(3_u8));
}
#[cfg(feature = "complex-expressions")]
#[test]
fn from_primitive_number_with_inclusive_range() {
#[derive(Debug, Eq, PartialEq, FromPrimitive)]
#[repr(u8)]
enum Enum {
Zero = 0,
#[num_enum(alternatives = [2..=255])]
NonZero,
}
let zero = Enum::from_primitive(0_u8);
assert_eq!(zero, Enum::Zero);
let one = Enum::from_primitive(1_u8);
assert_eq!(one, Enum::NonZero);
let two = Enum::from_primitive(2_u8);
assert_eq!(two, Enum::NonZero);
let three = Enum::from_primitive(3_u8);
assert_eq!(three, Enum::NonZero);
let twofivefive = Enum::from_primitive(255_u8);
assert_eq!(twofivefive, Enum::NonZero);
}

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use ::num_enum::IntoPrimitive;
// Guard against https://github.com/illicitonion/num_enum/issues/27
mod alloc {}
mod core {}
mod num_enum {}
mod std {}
#[derive(IntoPrimitive)]
#[repr(u8)]
enum Enum {
Zero,
One,
Two,
}
#[test]
fn simple() {
let zero: u8 = Enum::Zero.into();
assert_eq!(zero, 0u8);
let one: u8 = Enum::One.into();
assert_eq!(one, 1u8);
let two: u8 = Enum::Two.into();
assert_eq!(two, 2u8);
}
#[test]
fn catch_all() {
#[derive(Debug, Eq, PartialEq, IntoPrimitive)]
#[repr(u8)]
enum Enum {
Zero = 0,
#[num_enum(catch_all)]
NonZero(u8),
}
let zero: u8 = Enum::Zero.into();
assert_eq!(zero, 0u8);
let one: u8 = Enum::NonZero(1u8).into();
assert_eq!(one, 1u8);
let two: u8 = Enum::NonZero(2u8).into();
assert_eq!(two, 2u8);
}

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use std::process::Stdio;
#[test]
fn no_std() {
assert!(::std::process::Command::new("cargo")
.args([
"run",
"--manifest-path",
concat!(
env!("CARGO_MANIFEST_DIR"),
"/../renamed_num_enum/Cargo.toml",
),
])
.stdout(Stdio::inherit())
.stderr(Stdio::inherit())
.status()
.unwrap()
.success())
}
#[test]
fn std() {
assert!(::std::process::Command::new("cargo")
.args([
"run",
"--manifest-path",
concat!(
env!("CARGO_MANIFEST_DIR"),
"/../renamed_num_enum/Cargo.toml",
),
"--features",
"std",
])
.stdout(Stdio::inherit())
.stderr(Stdio::inherit())
.status()
.unwrap()
.success())
}

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use std::error::Error;
use std::path::{Path, PathBuf};
use walkdir::WalkDir;
#[test]
fn trybuild() {
let directory = PathBuf::from("tests/try_build");
let mut _renamer = None;
let compile_fail_dir = directory.join("compile_fail");
// Sometimes error messages change on beta/nightly - allow alternate errors on those.
_renamer = Some(Renamer::rename(compile_fail_dir.clone()).unwrap());
let fail = trybuild::TestCases::new();
fail.compile_fail(compile_fail_dir.join("*.rs"));
add_feature_dirs(&compile_fail_dir, &fail, ExpectedResult::Fail);
let pass = trybuild::TestCases::new();
let pass_dir = directory.join("pass");
pass.pass(pass_dir.join("*.rs"));
add_feature_dirs(&pass_dir, &pass, ExpectedResult::Pass);
}
enum ExpectedResult {
Pass,
Fail,
}
fn add_feature_dirs(
parent_dir: &Path,
test_cases: &trybuild::TestCases,
expected_result: ExpectedResult,
) {
let features_dir = parent_dir.join("features");
let feature_specific_dir = if cfg!(feature = "complex-expressions") {
features_dir.join("complex-expressions")
} else {
features_dir.join("!complex-expressions")
};
let tests = feature_specific_dir.join("*.rs");
match expected_result {
ExpectedResult::Pass => test_cases.pass(tests),
ExpectedResult::Fail => test_cases.compile_fail(tests),
}
}
struct Renamer(Vec<PathBuf>);
impl Renamer {
const STDERR_EXTENSION: &'static str = "stderr";
#[rustversion::all(beta)]
const VERSION_SPECIFIC_EXTENSION: &'static str = "stderr_beta";
#[rustversion::all(nightly)]
const VERSION_SPECIFIC_EXTENSION: &'static str = "stderr_nightly";
#[rustversion::all(not(beta), not(nightly))]
const VERSION_SPECIFIC_EXTENSION: &'static str = "stderr_doesnotexist";
const NON_VERSION_SPECIFIC_BACKUP_EXTENSION: &'static str =
"stderr_non_version_specific_backup";
fn rename(dir: PathBuf) -> anyhow::Result<Self> {
let nightly_paths = WalkDir::new(dir)
.max_depth(1)
.into_iter()
.filter_map(|dir_entry| {
let dir_entry = match dir_entry {
Ok(dir_entry) => dir_entry,
Err(err) => return Some(Err(err)),
};
let path = dir_entry.path();
if let Some(file_name) = path.file_name() {
if Path::new(file_name).extension()
== Some(Renamer::VERSION_SPECIFIC_EXTENSION.as_ref())
{
return Some(Ok(path.to_path_buf()));
}
}
None
})
.collect::<Result<Vec<_>, _>>()?;
// Create early so that if we end up returning an error this gets dropped and undoes any
// already-done renames.
let renamer = Renamer(nightly_paths);
for nightly_path in &renamer.0 {
std::fs::rename(
nightly_path.with_extension(Renamer::STDERR_EXTENSION),
nightly_path.with_extension(Renamer::NON_VERSION_SPECIFIC_BACKUP_EXTENSION),
)?;
std::fs::rename(
nightly_path.with_extension(Renamer::VERSION_SPECIFIC_EXTENSION),
nightly_path.with_extension(Renamer::STDERR_EXTENSION),
)?;
}
Ok(renamer)
}
}
impl Drop for Renamer {
fn drop(&mut self) {
for path in &self.0 {
ignore_error(std::fs::rename(
path.with_extension(Renamer::STDERR_EXTENSION),
path.with_extension(Renamer::VERSION_SPECIFIC_EXTENSION),
));
ignore_error(std::fs::rename(
path.with_extension(Renamer::NON_VERSION_SPECIFIC_BACKUP_EXTENSION),
path.with_extension(Renamer::STDERR_EXTENSION),
));
}
}
}
fn ignore_error<T, E: Error>(result: Result<T, E>) {
if let Err(err) = result {
eprintln!("Ignoring error: {}", err);
}
}

10
vendor/num_enum/tests/try_build/compile_fail/alternative_clashes_with_its_discriminant.rs vendored Normal file
View File

@@ -0,0 +1,10 @@
#[derive(num_enum::TryFromPrimitive)]
#[repr(u8)]
enum Numbers {
Zero = 0,
#[num_enum(alternatives = [3,1,4])]
One = 1,
Two = 2,
}
fn main() {}

5
vendor/num_enum/tests/try_build/compile_fail/alternative_clashes_with_its_discriminant.stderr vendored Normal file
View File

@@ -0,0 +1,5 @@
error: '1' in the alternative values is already attributed as the discriminant of this variant
--> tests/try_build/compile_fail/alternative_clashes_with_its_discriminant.rs:5:34
|
5 | #[num_enum(alternatives = [3,1,4])]
| ^

12
vendor/num_enum/tests/try_build/compile_fail/alternative_clashes_with_variant.rs vendored Normal file
View File

@@ -0,0 +1,12 @@
#[derive(num_enum::TryFromPrimitive)]
#[repr(u8)]
enum Numbers {
Zero = 0,
#[num_enum(alternatives = [2])]
One = 1,
Two = 2,
}
fn main() {
}

5
vendor/num_enum/tests/try_build/compile_fail/alternative_clashes_with_variant.stderr vendored Normal file
View File

@@ -0,0 +1,5 @@
error: The discriminant '2' collides with a value attributed to a previous variant
--> tests/try_build/compile_fail/alternative_clashes_with_variant.rs:7:5
|
7 | Two = 2,
| ^^^

10
vendor/num_enum/tests/try_build/compile_fail/alternative_clashes_with_variant_out_of_order.rs vendored Normal file
View File

@@ -0,0 +1,10 @@
#[derive(num_enum::TryFromPrimitive)]
#[repr(u8)]
enum Numbers {
Zero = 0,
#[num_enum(alternatives = [5,7,0,3])]
One = 1,
Two = 2,
}
fn main() {}

5
vendor/num_enum/tests/try_build/compile_fail/alternative_clashes_with_variant_out_of_order.stderr vendored Normal file
View File

@@ -0,0 +1,5 @@
error: '0' in the alternative values is already attributed to a previous variant
--> tests/try_build/compile_fail/alternative_clashes_with_variant_out_of_order.rs:5:36
|
5 | #[num_enum(alternatives = [5,7,0,3])]
| ^

13
vendor/num_enum/tests/try_build/compile_fail/alternative_exprs.rs vendored Normal file
View File

@@ -0,0 +1,13 @@
const THREE: u8 = 3;
#[derive(num_enum::TryFromPrimitive)]
#[repr(i8)]
enum Numbers {
Zero = 0,
#[num_enum(alternatives = [-1, 2, THREE])]
One = 1,
}
fn main() {
}

5
vendor/num_enum/tests/try_build/compile_fail/alternative_exprs.stderr vendored Normal file
View File

@@ -0,0 +1,5 @@
error: Only literals are allowed as num_enum alternate values
--> tests/try_build/compile_fail/alternative_exprs.rs:7:39
|
7 | #[num_enum(alternatives = [-1, 2, THREE])]
| ^^^^^

9
vendor/num_enum/tests/try_build/compile_fail/catch_all_multiple_fields.rs vendored Normal file
View File

@@ -0,0 +1,9 @@
#[derive(Debug, Eq, PartialEq, num_enum::FromPrimitive)]
#[repr(u8)]
enum Enum {
Zero = 0,
#[num_enum(catch_all)]
NonZero(u8, u8),
}
fn main() {}

5
vendor/num_enum/tests/try_build/compile_fail/catch_all_multiple_fields.stderr vendored Normal file
View File

@@ -0,0 +1,5 @@
error: Variant with `catch_all` must be a tuple with exactly 1 field matching the repr type
--> tests/try_build/compile_fail/catch_all_multiple_fields.rs:5:16
|
5 | #[num_enum(catch_all)]
| ^^^^^^^^^

9
vendor/num_enum/tests/try_build/compile_fail/catch_all_non_tuple.rs vendored Normal file
View File

@@ -0,0 +1,9 @@
#[derive(Debug, Eq, PartialEq, num_enum::FromPrimitive)]
#[repr(u8)]
enum Enum {
Zero = 0,
#[num_enum(catch_all)]
NonZero = 1,
}
fn main() {}

5
vendor/num_enum/tests/try_build/compile_fail/catch_all_non_tuple.stderr vendored Normal file
View File

@@ -0,0 +1,5 @@
error: Variant with `catch_all` must be a tuple with exactly 1 field matching the repr type
--> tests/try_build/compile_fail/catch_all_non_tuple.rs:5:16
|
5 | #[num_enum(catch_all)]
| ^^^^^^^^^

9
vendor/num_enum/tests/try_build/compile_fail/catch_all_type_mismatch.rs vendored Normal file
View File

@@ -0,0 +1,9 @@
#[derive(Debug, Eq, PartialEq, num_enum::FromPrimitive)]
#[repr(u8)]
enum Enum {
Zero = 0,
#[num_enum(catch_all)]
NonZero(i32),
}
fn main() {}

5
vendor/num_enum/tests/try_build/compile_fail/catch_all_type_mismatch.stderr vendored Normal file
View File

@@ -0,0 +1,5 @@
error: Variant with `catch_all` must be a tuple with exactly 1 field matching the repr type
--> tests/try_build/compile_fail/catch_all_type_mismatch.rs:5:16
|
5 | #[num_enum(catch_all)]
| ^^^^^^^^^

9
vendor/num_enum/tests/try_build/compile_fail/conflicting_default.rs vendored Normal file
View File

@@ -0,0 +1,9 @@
#[derive(Default, num_enum::Default)]
#[repr(u8)]
enum Number {
#[default]
Zero,
}
fn main() {
}

9
vendor/num_enum/tests/try_build/compile_fail/conflicting_default.stderr vendored Normal file
View File

@@ -0,0 +1,9 @@
error[E0119]: conflicting implementations of trait `Default` for type `Number`
--> tests/try_build/compile_fail/conflicting_default.rs:1:19
|
1 | #[derive(Default, num_enum::Default)]
| ------- ^^^^^^^^^^^^^^^^^ conflicting implementation for `Number`
| |
| first implementation here
|
= note: this error originates in the derive macro `num_enum::Default` (in Nightly builds, run with -Z macro-backtrace for more info)

11
vendor/num_enum/tests/try_build/compile_fail/conflicting_derive.rs vendored Normal file
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@@ -0,0 +1,11 @@
#[derive(num_enum::FromPrimitive, num_enum::TryFromPrimitive)]
#[repr(u8)]
enum Numbers {
Zero,
#[num_enum(default)]
One,
}
fn main() {
}

20
vendor/num_enum/tests/try_build/compile_fail/conflicting_derive.stderr vendored Normal file
View File

@@ -0,0 +1,20 @@
error[E0119]: conflicting implementations of trait `CannotDeriveBothFromPrimitiveAndTryFromPrimitive` for type `Numbers`
--> tests/try_build/compile_fail/conflicting_derive.rs:1:35
|
1 | #[derive(num_enum::FromPrimitive, num_enum::TryFromPrimitive)]
| ----------------------- ^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `Numbers`
| |
| first implementation here
|
= note: this error originates in the derive macro `num_enum::TryFromPrimitive` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0119]: conflicting implementations of trait `TryFrom<u8>` for type `Numbers`
--> tests/try_build/compile_fail/conflicting_derive.rs:1:35
|
1 | #[derive(num_enum::FromPrimitive, num_enum::TryFromPrimitive)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: conflicting implementation in crate `core`:
- impl<T, U> TryFrom<U> for T
where U: Into<T>;
= note: this error originates in the derive macro `num_enum::TryFromPrimitive` (in Nightly builds, run with -Z macro-backtrace for more info)

56
vendor/num_enum/tests/try_build/compile_fail/custom_error_type_parsing.rs vendored Normal file
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@@ -0,0 +1,56 @@
#[derive(num_enum::TryFromPrimitive)]
#[num_enum(error_type(name = CustomError))]
#[repr(u8)]
enum MissingConstructor {
Zero,
One,
Two,
}
#[derive(num_enum::TryFromPrimitive)]
#[num_enum(error_type(constructor = CustomError::new))]
#[repr(u8)]
enum MissingName {
Zero,
One,
Two,
}
#[derive(num_enum::TryFromPrimitive)]
#[num_enum(error_type(name = CustomError, constructor = CustomError::new, extra = something))]
#[repr(u8)]
enum ExtraAttr {
Zero,
One,
Two,
}
#[derive(num_enum::TryFromPrimitive)]
#[num_enum(error_type(name = CustomError, constructor = CustomError::new), error_type(name = CustomError, constructor = CustomError::new))]
#[repr(u8)]
enum TwoErrorTypes {
Zero,
One,
Two,
}
#[derive(num_enum::TryFromPrimitive)]
#[num_enum(error_type(name = CustomError, constructor = CustomError::new))]
#[num_enum(error_type(name = CustomError, constructor = CustomError::new))]
#[repr(u8)]
enum TwoAttrs {
Zero,
One,
Two,
}
struct CustomError {}
impl CustomError {
fn new(_: u8) -> CustomError {
CustomError{}
}
}
fn main() {
}

29
vendor/num_enum/tests/try_build/compile_fail/custom_error_type_parsing.stderr vendored Normal file
View File

@@ -0,0 +1,29 @@
error: num_enum error_type attribute requires `constructor` value
--> tests/try_build/compile_fail/custom_error_type_parsing.rs:2:12
|
2 | #[num_enum(error_type(name = CustomError))]
| ^^^^^^^^^^
error: num_enum error_type attribute requires `name` value
--> tests/try_build/compile_fail/custom_error_type_parsing.rs:11:12
|
11 | #[num_enum(error_type(constructor = CustomError::new))]
| ^^^^^^^^^^
error: expected `name` or `constructor`
--> tests/try_build/compile_fail/custom_error_type_parsing.rs:20:75
|
20 | #[num_enum(error_type(name = CustomError, constructor = CustomError::new, extra = something))]
| ^^^^^
error: num_enum attribute must have at most one error_type
--> tests/try_build/compile_fail/custom_error_type_parsing.rs:29:76
|
29 | #[num_enum(error_type(name = CustomError, constructor = CustomError::new), error_type(name = CustomError, constructor = CustomError::new))]
| ^^^^^^^^^^
error: At most one num_enum error_type attribute may be specified
--> tests/try_build/compile_fail/custom_error_type_parsing.rs:39:1
|
39 | #[num_enum(error_type(name = CustomError, constructor = CustomError::new))]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

10
vendor/num_enum/tests/try_build/compile_fail/default_and_catch_all.rs vendored Normal file
View File

@@ -0,0 +1,10 @@
#[derive(Debug, Eq, PartialEq, num_enum::FromPrimitive)]
#[repr(u8)]
enum Enum {
#[default]
Zero = 0,
#[num_enum(catch_all)]
NonZero(u8),
}
fn main() {}

5
vendor/num_enum/tests/try_build/compile_fail/default_and_catch_all.stderr vendored Normal file
View File

@@ -0,0 +1,5 @@
error: Attribute `catch_all` is mutually exclusive with `default`
--> tests/try_build/compile_fail/default_and_catch_all.rs:6:16
|
6 | #[num_enum(catch_all)]
| ^^^^^^^^^

10
vendor/num_enum/tests/try_build/compile_fail/default_and_catch_all_alt.rs vendored Normal file
View File

@@ -0,0 +1,10 @@
#[derive(Debug, Eq, PartialEq, num_enum::FromPrimitive)]
#[repr(u8)]
enum Enum {
#[num_enum(default)]
Zero = 0,
#[num_enum(catch_all)]
NonZero(u8),
}
fn main() {}

5
vendor/num_enum/tests/try_build/compile_fail/default_and_catch_all_alt.stderr vendored Normal file
View File

@@ -0,0 +1,5 @@
error: Attribute `catch_all` is mutually exclusive with `default`
--> tests/try_build/compile_fail/default_and_catch_all_alt.rs:6:16
|
6 | #[num_enum(catch_all)]
| ^^^^^^^^^

10
vendor/num_enum/tests/try_build/compile_fail/default_and_catch_all_same_variant.rs vendored Normal file
View File

@@ -0,0 +1,10 @@
#[derive(Debug, Eq, PartialEq, num_enum::FromPrimitive)]
#[repr(u8)]
enum Enum {
Zero = 0,
#[num_enum(catch_all)]
#[default]
NonZero(u8),
}
fn main() {}

5
vendor/num_enum/tests/try_build/compile_fail/default_and_catch_all_same_variant.stderr vendored Normal file
View File

@@ -0,0 +1,5 @@
error: Attribute `default` is mutually exclusive with `catch_all`
--> tests/try_build/compile_fail/default_and_catch_all_same_variant.rs:6:5
|
6 | #[default]
| ^^^^^^^^^^

10
vendor/num_enum/tests/try_build/compile_fail/default_and_catch_all_same_variant_alt.rs vendored Normal file
View File

@@ -0,0 +1,10 @@
#[derive(Debug, Eq, PartialEq, num_enum::FromPrimitive)]
#[repr(u8)]
enum Enum {
Zero = 0,
#[num_enum(catch_all)]
#[num_enum(default)]
NonZero(u8),
}
fn main() {}

5
vendor/num_enum/tests/try_build/compile_fail/default_and_catch_all_same_variant_alt.stderr vendored Normal file
View File

@@ -0,0 +1,5 @@
error: Attribute `default` is mutually exclusive with `catch_all`
--> tests/try_build/compile_fail/default_and_catch_all_same_variant_alt.rs:6:16
|
6 | #[num_enum(default)]
| ^^^^^^^

11
vendor/num_enum/tests/try_build/compile_fail/features/!complex-expressions/alternate_exprs_with_range.rs vendored Normal file
View File

@@ -0,0 +1,11 @@
#[derive(num_enum::FromPrimitive)]
#[repr(u8)]
enum Numbers {
Zero = 0,
#[num_enum(alternatives = [2..=255])]
NonZero = 1,
}
fn main() {
}

5
vendor/num_enum/tests/try_build/compile_fail/features/!complex-expressions/alternate_exprs_with_range.stderr vendored Normal file
View File

@@ -0,0 +1,5 @@
error: Ranges are only supported as num_enum alternate values if the `complex-expressions` feature of the crate `num_enum` is enabled
--> tests/try_build/compile_fail/features/!complex-expressions/alternate_exprs_with_range.rs:5:5
|
5 | #[num_enum(alternatives = [2..=255])]
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

11
vendor/num_enum/tests/try_build/compile_fail/features/complex-expressions/alternate_exprs_range_missing_lower_bound.rs vendored Normal file
View File

@@ -0,0 +1,11 @@
#[derive(num_enum::TryFromPrimitive)]
#[repr(u8)]
enum Numbers {
Zero = 0,
#[num_enum(alternatives = [..255])]
NonZero = 1,
}
fn main() {
}

5
vendor/num_enum/tests/try_build/compile_fail/features/complex-expressions/alternate_exprs_range_missing_lower_bound.stderr vendored Normal file
View File

@@ -0,0 +1,5 @@
error: When ranges are used for alternate values, both bounds most be explicitly specified numeric literals
--> tests/try_build/compile_fail/features/complex-expressions/alternate_exprs_range_missing_lower_bound.rs:5:32
|
5 | #[num_enum(alternatives = [..255])]
| ^^^^^

11
vendor/num_enum/tests/try_build/compile_fail/features/complex-expressions/alternate_exprs_range_missing_upper_bound.rs vendored Normal file
View File

@@ -0,0 +1,11 @@
#[derive(num_enum::TryFromPrimitive)]
#[repr(u8)]
enum Numbers {
Zero = 0,
#[num_enum(alternatives = [2..])]
NonZero = 1,
}
fn main() {
}

5
vendor/num_enum/tests/try_build/compile_fail/features/complex-expressions/alternate_exprs_range_missing_upper_bound.stderr vendored Normal file
View File

@@ -0,0 +1,5 @@
error: When ranges are used for alternate values, both bounds most be explicitly specified numeric literals
--> tests/try_build/compile_fail/features/complex-expressions/alternate_exprs_range_missing_upper_bound.rs:5:32
|
5 | #[num_enum(alternatives = [2..])]
| ^^^

13
vendor/num_enum/tests/try_build/compile_fail/features/complex-expressions/alternate_exprs_range_nonlit_lower_bound.rs vendored Normal file
View File

@@ -0,0 +1,13 @@
const TWO: u8 = 2;
#[derive(num_enum::TryFromPrimitive)]
#[repr(u8)]
enum Numbers {
Zero = 0,
#[num_enum(alternatives = [TWO..=255])]
NonZero = 1,
}
fn main() {
}

5
vendor/num_enum/tests/try_build/compile_fail/features/complex-expressions/alternate_exprs_range_nonlit_lower_bound.stderr vendored Normal file
View File

@@ -0,0 +1,5 @@
error: When ranges are used for alternate values, both bounds most be explicitly specified numeric literals
--> tests/try_build/compile_fail/features/complex-expressions/alternate_exprs_range_nonlit_lower_bound.rs:7:32
|
7 | #[num_enum(alternatives = [TWO..=255])]
| ^^^^^^^^^

13
vendor/num_enum/tests/try_build/compile_fail/features/complex-expressions/alternate_exprs_range_nonlit_upper_bound.rs vendored Normal file
View File

@@ -0,0 +1,13 @@
const TWOFIVEFIVE: u8 = 255;
#[derive(num_enum::TryFromPrimitive)]
#[repr(u8)]
enum Numbers {
Zero = 0,
#[num_enum(alternatives = [2..=TWOFIVEFIVE])]
NonZero = 1,
}
fn main() {
}

5
vendor/num_enum/tests/try_build/compile_fail/features/complex-expressions/alternate_exprs_range_nonlit_upper_bound.stderr vendored Normal file
View File

@@ -0,0 +1,5 @@
error: When ranges are used for alternate values, both bounds most be explicitly specified numeric literals
--> tests/try_build/compile_fail/features/complex-expressions/alternate_exprs_range_nonlit_upper_bound.rs:7:32
|
7 | #[num_enum(alternatives = [2..=TWOFIVEFIVE])]
| ^^^^^^^^^^^^^^^

11
vendor/num_enum/tests/try_build/compile_fail/features/complex-expressions/alternate_exprs_range_swapped_bounds.rs vendored Normal file
View File

@@ -0,0 +1,11 @@
#[derive(num_enum::TryFromPrimitive)]
#[repr(u8)]
enum Numbers {
Zero = 0,
#[num_enum(alternatives = [255..=2])]
NonZero = 1,
}
fn main() {
}

5
vendor/num_enum/tests/try_build/compile_fail/features/complex-expressions/alternate_exprs_range_swapped_bounds.stderr vendored Normal file
View File

@@ -0,0 +1,5 @@
error: When using ranges for alternate values, upper bound must not be less than lower bound
--> tests/try_build/compile_fail/features/complex-expressions/alternate_exprs_range_swapped_bounds.rs:5:32
|
5 | #[num_enum(alternatives = [255..=2])]
| ^^^^^^^

17
vendor/num_enum/tests/try_build/compile_fail/from_unchecked_deprecated_warning.rs vendored Normal file
View File

@@ -0,0 +1,17 @@
#![deny(deprecated)]
use num_enum::UnsafeFromPrimitive;
#[derive(Debug, Eq, PartialEq, UnsafeFromPrimitive)]
#[repr(u8)]
enum Enum {
Zero,
One,
}
fn main() {
unsafe {
assert_eq!(Enum::from_unchecked(0_u8), Enum::Zero);
assert_eq!(Enum::from_unchecked(1_u8), Enum::One);
}
}

17
vendor/num_enum/tests/try_build/compile_fail/from_unchecked_deprecated_warning.stderr vendored Normal file
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@@ -0,0 +1,17 @@
error: use of deprecated associated function `num_enum::UnsafeFromPrimitive::from_unchecked`: Prefer to use `unchecked_transmute_from`, `from_unchecked` will be removed in a future release.
--> tests/try_build/compile_fail/from_unchecked_deprecated_warning.rs:14:26
|
14 | assert_eq!(Enum::from_unchecked(0_u8), Enum::Zero);
| ^^^^^^^^^^^^^^
|
note: the lint level is defined here
--> tests/try_build/compile_fail/from_unchecked_deprecated_warning.rs:1:9
|
1 | #![deny(deprecated)]
| ^^^^^^^^^^
error: use of deprecated associated function `num_enum::UnsafeFromPrimitive::from_unchecked`: Prefer to use `unchecked_transmute_from`, `from_unchecked` will be removed in a future release.
--> tests/try_build/compile_fail/from_unchecked_deprecated_warning.rs:15:26
|
15 | assert_eq!(Enum::from_unchecked(1_u8), Enum::One);
| ^^^^^^^^^^^^^^

12
vendor/num_enum/tests/try_build/compile_fail/garbage_attribute.rs vendored Normal file
View File

@@ -0,0 +1,12 @@
#[derive(num_enum::TryFromPrimitive)]
#[repr(u8)]
enum Numbers {
Zero = 0,
#[num_enum(garbage)]
One = 1,
Two = 2,
}
fn main() {
}

5
vendor/num_enum/tests/try_build/compile_fail/garbage_attribute.stderr vendored Normal file
View File

@@ -0,0 +1,5 @@
error: Invalid attribute: expected one of: `default`, `catch_all`, `alternatives`
--> $DIR/garbage_attribute.rs:5:5
|
5 | #[num_enum(garbage)]
| ^^^^^^^^^^^^^^^^^^^^

11
vendor/num_enum/tests/try_build/compile_fail/missing_default.rs vendored Normal file
View File

@@ -0,0 +1,11 @@
#[derive(num_enum::FromPrimitive)]
#[repr(u8)]
enum Numbers {
Zero,
One,
Two,
}
fn main() {
}

7
vendor/num_enum/tests/try_build/compile_fail/missing_default.stderr vendored Normal file
View File

@@ -0,0 +1,7 @@
error: #[derive(num_enum::FromPrimitive)] requires enum to be exhaustive, or a variant marked with `#[default]`, `#[num_enum(default)]`, or `#[num_enum(catch_all)`
--> $DIR/missing_default.rs:1:10
|
1 | #[derive(num_enum::FromPrimitive)]
| ^^^^^^^^^^^^^^^^^^^^^^^
|
= note: this error originates in the derive macro `num_enum::FromPrimitive` (in Nightly builds, run with -Z macro-backtrace for more info)

7
vendor/num_enum/tests/try_build/compile_fail/missing_repr.rs vendored Normal file
View File

@@ -0,0 +1,7 @@
#[derive(num_enum::IntoPrimitive)]
enum Numbers {
Zero,
One,
}
fn main() {}

7
vendor/num_enum/tests/try_build/compile_fail/missing_repr.stderr vendored Normal file
View File

@@ -0,0 +1,7 @@
error: Missing `#[repr({Integer})]` attribute
--> $DIR/missing_repr.rs:1:10
|
1 | #[derive(num_enum::IntoPrimitive)]
| ^^^^^^^^^^^^^^^^^^^^^^^
|
= note: this error originates in the derive macro `num_enum::IntoPrimitive` (in Nightly builds, run with -Z macro-backtrace for more info)

10
vendor/num_enum/tests/try_build/compile_fail/multiple_catch_all.rs vendored Normal file
View File

@@ -0,0 +1,10 @@
#[derive(Debug, Eq, PartialEq, num_enum::FromPrimitive)]
#[repr(u8)]
enum Enum {
#[num_enum(catch_all)]
Zero(u8),
#[num_enum(catch_all)]
NonZero(u8),
}
fn main() {}

5
vendor/num_enum/tests/try_build/compile_fail/multiple_catch_all.stderr vendored Normal file
View File

@@ -0,0 +1,5 @@
error: Multiple variants marked with `#[num_enum(catch_all)]`
--> tests/try_build/compile_fail/multiple_catch_all.rs:6:16
|
6 | #[num_enum(catch_all)]
| ^^^^^^^^^

10
vendor/num_enum/tests/try_build/compile_fail/multiple_catch_all_same_variant.rs vendored Normal file
View File

@@ -0,0 +1,10 @@
#[derive(Debug, Eq, PartialEq, num_enum::FromPrimitive)]
#[repr(u8)]
enum Enum {
Zero = 0,
#[num_enum(catch_all)]
#[num_enum(catch_all)]
NonZero(u8),
}
fn main() {}

5
vendor/num_enum/tests/try_build/compile_fail/multiple_catch_all_same_variant.stderr vendored Normal file
View File

@@ -0,0 +1,5 @@
error: Multiple variants marked with `#[num_enum(catch_all)]`
--> tests/try_build/compile_fail/multiple_catch_all_same_variant.rs:6:16
|
6 | #[num_enum(catch_all)]
| ^^^^^^^^^

13
vendor/num_enum/tests/try_build/compile_fail/multiple_defaults.rs vendored Normal file
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@@ -0,0 +1,13 @@
#[derive(num_enum::FromPrimitive, num_enum::TryFromPrimitive)]
#[repr(u8)]
enum Numbers {
Zero,
#[default]
One,
#[default]
Two,
}
fn main() {
}

5
vendor/num_enum/tests/try_build/compile_fail/multiple_defaults.stderr vendored Normal file
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@@ -0,0 +1,5 @@
error: Multiple variants marked `#[default]` or `#[num_enum(default)]` found
--> $DIR/multiple_defaults.rs:7:5
|
7 | #[default]
| ^^^^^^^^^^

13
vendor/num_enum/tests/try_build/compile_fail/multiple_defaults_different_kinds.rs vendored Normal file
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@@ -0,0 +1,13 @@
#[derive(num_enum::FromPrimitive, num_enum::TryFromPrimitive)]
#[repr(u8)]
enum Numbers {
Zero,
#[default]
One,
#[num_enum(default)]
Two,
}
fn main() {
}

5
vendor/num_enum/tests/try_build/compile_fail/multiple_defaults_different_kinds.stderr vendored Normal file
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@@ -0,0 +1,5 @@
error: Multiple variants marked `#[default]` or `#[num_enum(default)]` found
--> $DIR/multiple_defaults_different_kinds.rs:7:16
|
7 | #[num_enum(default)]
| ^^^^^^^

13
vendor/num_enum/tests/try_build/compile_fail/multiple_num_enum_defaults.rs vendored Normal file
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@@ -0,0 +1,13 @@
#[derive(num_enum::FromPrimitive, num_enum::TryFromPrimitive)]
#[repr(u8)]
enum Numbers {
Zero,
#[num_enum(default)]
One,
#[num_enum(default)]
Two,
}
fn main() {
}

5
vendor/num_enum/tests/try_build/compile_fail/multiple_num_enum_defaults.stderr vendored Normal file
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@@ -0,0 +1,5 @@
error: Multiple variants marked `#[default]` or `#[num_enum(default)]` found
--> $DIR/multiple_num_enum_defaults.rs:7:16
|
7 | #[num_enum(default)]
| ^^^^^^^

8
vendor/num_enum/tests/try_build/compile_fail/repr_c.rs vendored Normal file
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@@ -0,0 +1,8 @@
#[derive(num_enum::IntoPrimitive)]
#[repr(C)]
enum Numbers {
Zero,
One,
}
fn main() {}

5
vendor/num_enum/tests/try_build/compile_fail/repr_c.stderr vendored Normal file
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@@ -0,0 +1,5 @@
error: repr(C) doesn't have a well defined size
--> $DIR/repr_c.rs:2:8
|
2 | #[repr(C)]
| ^

22
vendor/num_enum/tests/try_build/compile_fail/variants_with_fields.rs vendored Normal file
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@@ -0,0 +1,22 @@
use num_enum::{FromPrimitive, IntoPrimitive, TryFromPrimitive};
#[derive(Debug, Eq, PartialEq, TryFromPrimitive)]
#[repr(u8)]
enum Number {
Zero,
NonZero(u8),
}
#[derive(Debug, Eq, PartialEq, FromPrimitive)]
#[repr(u8)]
enum Colour {
Red { intensity: u8 },
}
#[derive(Debug, Eq, PartialEq, IntoPrimitive)]
#[repr(u8)]
enum Meaningless {
Beep(),
}
fn main() {}

17
vendor/num_enum/tests/try_build/compile_fail/variants_with_fields.stderr vendored Normal file
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@@ -0,0 +1,17 @@
error: `num_enum` only supports unit variants (with no associated data), but `Number::NonZero` was not a unit variant.
--> $DIR/variants_with_fields.rs:7:5
|
7 | NonZero(u8),
| ^^^^^^^^^^^
error: `num_enum` only supports unit variants (with no associated data), but `Colour::Red` was not a unit variant.
--> $DIR/variants_with_fields.rs:13:5
|
13 | Red { intensity: u8 },
| ^^^^^^^^^^^^^^^^^^^^^
error: `num_enum` only supports unit variants (with no associated data), but `Meaningless::Beep` was not a unit variant.
--> $DIR/variants_with_fields.rs:19:5
|
19 | Beep(),
| ^^^^^^

66
vendor/num_enum/tests/try_build/pass/default_and_alternatives.rs vendored Normal file
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@@ -0,0 +1,66 @@
#[derive(num_enum::TryFromPrimitive)]
#[repr(u8)]
enum Default {
#[num_enum(default)]
Foo = 0,
Bar = 1,
}
#[derive(num_enum::TryFromPrimitive)]
#[repr(u8)]
enum Alternatives {
#[num_enum(alternatives = [])]
Foo = 0,
#[num_enum(alternatives = [3])]
Bar = 1,
#[num_enum(alternatives = [4, 5])]
Baz = 2,
#[num_enum(alternatives = [7])]
#[num_enum(alternatives = [8])]
Blee = 6,
}
#[derive(num_enum::TryFromPrimitive)]
#[repr(u8)]
enum Both {
#[num_enum(default)]
Foo = 0,
#[num_enum(alternatives = [3])]
Bar = 1,
}
mod mixed {
#[derive(num_enum::TryFromPrimitive)]
#[repr(u8)]
enum AlternativesFollowedByDefaultInSingleAttribute {
#[num_enum(alternatives = [1, 2], default)]
Foo = 0,
}
#[derive(num_enum::TryFromPrimitive)]
#[repr(u8)]
enum DefaultFollowedByAlternativesInSingleAttribute {
#[num_enum(default, alternatives = [1, 2])]
Foo = 0,
}
#[derive(num_enum::TryFromPrimitive)]
#[repr(u8)]
enum AlternativesFollowedByDefaultInMultipleAttributes {
#[num_enum(alternatives = [1, 2])]
#[num_enum(default)]
Foo = 0,
}
#[derive(num_enum::TryFromPrimitive)]
#[repr(u8)]
enum DefaultFollowedByAlternativesInMultipleAttributes {
#[num_enum(default)]
#[num_enum(alternatives = [1, 2])]
Foo = 0,
}
}
fn main() {
}

40
vendor/num_enum/tests/try_build/pass/exhaustive_enum_try_from.rs vendored Normal file
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@@ -0,0 +1,40 @@
#[derive(num_enum::TryFromPrimitive)]
#[repr(u8)]
enum ExhaustiveTryFrom {
#[num_enum(alternatives = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15])]
A = 0,
#[num_enum(alternatives = [17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31])]
B = 16,
#[num_enum(alternatives = [33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47])]
C = 32,
#[num_enum(alternatives = [49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63])]
D = 48,
#[num_enum(alternatives = [65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79])]
E = 64,
#[num_enum(alternatives = [81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95])]
F = 80,
#[num_enum(alternatives = [97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111])]
G = 96,
#[num_enum(alternatives = [113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127])]
H = 112,
#[num_enum(alternatives = [129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143])]
I = 128,
#[num_enum(alternatives = [145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159])]
J = 144,
#[num_enum(alternatives = [161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175])]
K = 160,
#[num_enum(alternatives = [177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191])]
L = 176,
#[num_enum(alternatives = [193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207])]
M = 192,
#[num_enum(alternatives = [209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223])]
N = 208,
#[num_enum(alternatives = [225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239])]
O = 224,
#[num_enum(alternatives = [241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255])]
P = 240,
}
fn main() {
}

40
vendor/num_enum/tests/try_build/pass/exhaustive_enum_via_alternatives.rs vendored Normal file
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@@ -0,0 +1,40 @@
#[derive(num_enum::FromPrimitive)]
#[repr(u8)]
enum ExhaustiveFrom {
#[num_enum(alternatives = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15])]
A = 0,
#[num_enum(alternatives = [17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31])]
B = 16,
#[num_enum(alternatives = [33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47])]
C = 32,
#[num_enum(alternatives = [49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63])]
D = 48,
#[num_enum(alternatives = [65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79])]
E = 64,
#[num_enum(alternatives = [81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95])]
F = 80,
#[num_enum(alternatives = [97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111])]
G = 96,
#[num_enum(alternatives = [113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127])]
H = 112,
#[num_enum(alternatives = [129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143])]
I = 128,
#[num_enum(alternatives = [145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159])]
J = 144,
#[num_enum(alternatives = [161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175])]
K = 160,
#[num_enum(alternatives = [177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191])]
L = 176,
#[num_enum(alternatives = [193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207])]
M = 192,
#[num_enum(alternatives = [209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223])]
N = 208,
#[num_enum(alternatives = [225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239])]
O = 224,
#[num_enum(alternatives = [241, 242, 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255])]
P = 240,
}
fn main() {
}

39
vendor/num_enum/tests/try_build/pass/exhaustive_enum_via_default.rs vendored Normal file
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@@ -0,0 +1,39 @@
#[derive(num_enum::FromPrimitive)]
#[repr(u8)]
enum ExhaustiveFrom {
#[num_enum(default)]
#[num_enum(alternatives = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15])]
A = 0,
#[num_enum(alternatives = [17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31])]
B = 16,
#[num_enum(alternatives = [33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47])]
C = 32,
#[num_enum(alternatives = [49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63])]
D = 48,
#[num_enum(alternatives = [65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79])]
E = 64,
#[num_enum(alternatives = [81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95])]
F = 80,
#[num_enum(alternatives = [97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111])]
G = 96,
#[num_enum(alternatives = [113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127])]
H = 112,
#[num_enum(alternatives = [129, 130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, 143])]
I = 128,
#[num_enum(alternatives = [145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159])]
J = 144,
#[num_enum(alternatives = [161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171, 172, 173, 174, 175])]
K = 160,
#[num_enum(alternatives = [177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 188, 189, 190, 191])]
L = 176,
#[num_enum(alternatives = [193, 194, 195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207])]
M = 192,
#[num_enum(alternatives = [209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223])]
N = 208,
#[num_enum(alternatives = [225, 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239])]
O = 224,
}
fn main() {
}

11
vendor/num_enum/tests/try_build/pass/features/complex-expressions/alternate_exprs_exhaustive_with_range.rs vendored Normal file
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@@ -0,0 +1,11 @@
#[derive(num_enum::FromPrimitive)]
#[repr(u8)]
enum Numbers {
Zero = 0,
#[num_enum(alternatives = [2..=255])]
NonZero = 1,
}
fn main() {
}

11
vendor/num_enum/tests/try_build/pass/features/complex-expressions/alternate_exprs_non_exhaustive_with_range.rs vendored Normal file
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@@ -0,0 +1,11 @@
#[derive(num_enum::TryFromPrimitive)]
#[repr(u8)]
enum Numbers {
Zero = 0,
#[num_enum(alternatives = [2..255])]
NonZero = 1,
}
fn main() {
}

551
vendor/num_enum/tests/try_from_primitive.rs vendored Normal file
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@@ -0,0 +1,551 @@
use ::std::convert::{TryFrom, TryInto};
use ::num_enum::TryFromPrimitive;
// Guard against https://github.com/illicitonion/num_enum/issues/27
mod alloc {}
mod core {}
mod num_enum {}
mod std {}
#[test]
fn simple() {
#[derive(Debug, Eq, PartialEq, TryFromPrimitive)]
#[repr(u8)]
enum Enum {
Zero,
One,
Two,
}
let zero: Result<Enum, _> = 0u8.try_into();
assert_eq!(zero, Ok(Enum::Zero));
let three: Result<Enum, _> = 3u8.try_into();
assert_eq!(
three.unwrap_err().to_string(),
"No discriminant in enum `Enum` matches the value `3`"
);
}
#[test]
fn even() {
#[derive(Debug, Eq, PartialEq, TryFromPrimitive)]
#[repr(u8)]
enum Enum {
Zero = 0,
Two = 2,
Four = 4,
}
let zero: Result<Enum, _> = 0u8.try_into();
assert_eq!(zero, Ok(Enum::Zero));
let one: Result<Enum, _> = 1u8.try_into();
assert_eq!(
one.unwrap_err().to_string(),
"No discriminant in enum `Enum` matches the value `1`"
);
let two: Result<Enum, _> = 2u8.try_into();
assert_eq!(two, Ok(Enum::Two));
let three: Result<Enum, _> = 3u8.try_into();
assert_eq!(
three.unwrap_err().to_string(),
"No discriminant in enum `Enum` matches the value `3`"
);
let four: Result<Enum, _> = 4u8.try_into();
assert_eq!(four, Ok(Enum::Four));
}
#[test]
fn skipped_value() {
#[derive(Debug, Eq, PartialEq, TryFromPrimitive)]
#[repr(u8)]
enum Enum {
Zero,
One,
Three = 3,
Four,
}
let zero: Result<Enum, _> = 0u8.try_into();
assert_eq!(zero, Ok(Enum::Zero));
let one: Result<Enum, _> = 1u8.try_into();
assert_eq!(one, Ok(Enum::One));
let two: Result<Enum, _> = 2u8.try_into();
assert_eq!(
two.unwrap_err().to_string(),
"No discriminant in enum `Enum` matches the value `2`"
);
let three: Result<Enum, _> = 3u8.try_into();
assert_eq!(three, Ok(Enum::Three));
let four: Result<Enum, _> = 4u8.try_into();
assert_eq!(four, Ok(Enum::Four));
}
#[test]
fn wrong_order() {
#[derive(Debug, Eq, PartialEq, TryFromPrimitive)]
#[repr(u8)]
enum Enum {
Four = 4,
Three = 3,
Zero = 0,
One, // Zero + 1
}
let zero: Result<Enum, _> = 0u8.try_into();
assert_eq!(zero, Ok(Enum::Zero));
let one: Result<Enum, _> = 1u8.try_into();
assert_eq!(one, Ok(Enum::One));
let two: Result<Enum, _> = 2u8.try_into();
assert_eq!(
two.unwrap_err().to_string(),
"No discriminant in enum `Enum` matches the value `2`"
);
let three: Result<Enum, _> = 3u8.try_into();
assert_eq!(three, Ok(Enum::Three));
let four: Result<Enum, _> = 4u8.try_into();
assert_eq!(four, Ok(Enum::Four));
}
#[test]
fn negative_values() {
#[derive(Debug, Eq, PartialEq, TryFromPrimitive)]
#[repr(i8)]
enum Enum {
MinusTwo = -2,
MinusOne = -1,
Zero = 0,
One = 1,
Two = 2,
}
let minus_two: Result<Enum, _> = (-2i8).try_into();
assert_eq!(minus_two, Ok(Enum::MinusTwo));
let minus_one: Result<Enum, _> = (-1i8).try_into();
assert_eq!(minus_one, Ok(Enum::MinusOne));
let zero: Result<Enum, _> = 0i8.try_into();
assert_eq!(zero, Ok(Enum::Zero));
let one: Result<Enum, _> = 1i8.try_into();
assert_eq!(one, Ok(Enum::One));
let two: Result<Enum, _> = 2i8.try_into();
assert_eq!(two, Ok(Enum::Two));
}
#[test]
fn discriminant_expressions() {
const ONE: u8 = 1;
#[derive(Debug, Eq, PartialEq, TryFromPrimitive)]
#[repr(u8)]
enum Enum {
Zero,
One = ONE,
Two,
Four = 4u8,
Five,
Six = ONE + ONE + 2u8 + 2,
}
let zero: Result<Enum, _> = 0u8.try_into();
assert_eq!(zero, Ok(Enum::Zero));
let one: Result<Enum, _> = 1u8.try_into();
assert_eq!(one, Ok(Enum::One));
let two: Result<Enum, _> = 2u8.try_into();
assert_eq!(two, Ok(Enum::Two));
let three: Result<Enum, _> = 3u8.try_into();
assert_eq!(
three.unwrap_err().to_string(),
"No discriminant in enum `Enum` matches the value `3`",
);
let four: Result<Enum, _> = 4u8.try_into();
assert_eq!(four, Ok(Enum::Four));
let five: Result<Enum, _> = 5u8.try_into();
assert_eq!(five, Ok(Enum::Five));
let six: Result<Enum, _> = 6u8.try_into();
assert_eq!(six, Ok(Enum::Six));
}
#[cfg(feature = "complex-expressions")]
mod complex {
use num_enum::TryFromPrimitive;
use std::convert::TryInto;
const ONE: u8 = 1;
#[derive(Debug, Eq, PartialEq, TryFromPrimitive)]
#[repr(u8)]
enum Enum {
Zero,
One = ONE,
Two,
Four = 4u8,
Five,
Six = ONE + ONE + 2u8 + 2,
Seven = (7, 2).0,
}
#[test]
fn different_values() {
let zero: Result<Enum, _> = 0u8.try_into();
assert_eq!(zero, Ok(Enum::Zero));
let one: Result<Enum, _> = 1u8.try_into();
assert_eq!(one, Ok(Enum::One));
let two: Result<Enum, _> = 2u8.try_into();
assert_eq!(two, Ok(Enum::Two));
let three: Result<Enum, _> = 3u8.try_into();
assert_eq!(
three.unwrap_err().to_string(),
"No discriminant in enum `Enum` matches the value `3`",
);
let four: Result<Enum, _> = 4u8.try_into();
assert_eq!(four, Ok(Enum::Four));
let five: Result<Enum, _> = 5u8.try_into();
assert_eq!(five, Ok(Enum::Five));
let six: Result<Enum, _> = 6u8.try_into();
assert_eq!(six, Ok(Enum::Six));
let seven: Result<Enum, _> = 7u8.try_into();
assert_eq!(seven, Ok(Enum::Seven));
}
#[derive(Debug, Eq, PartialEq, TryFromPrimitive)]
#[repr(u8)]
enum EnumWithExclusiveRange {
Zero = 0,
#[num_enum(alternatives = [2..4])]
OneOrTwoOrThree,
}
#[test]
fn different_values_with_exclusive_range() {
let zero: Result<EnumWithExclusiveRange, _> = 0u8.try_into();
assert_eq!(zero, Ok(EnumWithExclusiveRange::Zero));
let one: Result<EnumWithExclusiveRange, _> = 1u8.try_into();
assert_eq!(one, Ok(EnumWithExclusiveRange::OneOrTwoOrThree));
let two: Result<EnumWithExclusiveRange, _> = 2u8.try_into();
assert_eq!(two, Ok(EnumWithExclusiveRange::OneOrTwoOrThree));
let three: Result<EnumWithExclusiveRange, _> = 3u8.try_into();
assert_eq!(three, Ok(EnumWithExclusiveRange::OneOrTwoOrThree));
let four: Result<EnumWithExclusiveRange, _> = 4u8.try_into();
assert_eq!(
four.unwrap_err().to_string(),
"No discriminant in enum `EnumWithExclusiveRange` matches the value `4`",
);
}
#[derive(Debug, Eq, PartialEq, TryFromPrimitive)]
#[repr(u8)]
enum EnumWithInclusiveRange {
Zero = 0,
#[num_enum(alternatives = [2..=3])]
OneOrTwoOrThree,
}
#[test]
fn different_values_with_inclusive_range() {
let zero: Result<EnumWithInclusiveRange, _> = 0u8.try_into();
assert_eq!(zero, Ok(EnumWithInclusiveRange::Zero));
let one: Result<EnumWithInclusiveRange, _> = 1u8.try_into();
assert_eq!(one, Ok(EnumWithInclusiveRange::OneOrTwoOrThree));
let two: Result<EnumWithInclusiveRange, _> = 2u8.try_into();
assert_eq!(two, Ok(EnumWithInclusiveRange::OneOrTwoOrThree));
let three: Result<EnumWithInclusiveRange, _> = 3u8.try_into();
assert_eq!(three, Ok(EnumWithInclusiveRange::OneOrTwoOrThree));
let four: Result<EnumWithInclusiveRange, _> = 4u8.try_into();
assert_eq!(
four.unwrap_err().to_string(),
"No discriminant in enum `EnumWithInclusiveRange` matches the value `4`",
);
}
}
#[test]
fn missing_trailing_comma() {
#[rustfmt::skip]
#[derive(Debug, Eq, PartialEq, TryFromPrimitive)]
#[repr(u8)]
enum Enum {
Zero,
One
}
let zero: Result<Enum, _> = 0u8.try_into();
assert_eq!(zero, Ok(Enum::Zero));
let one: Result<Enum, _> = 1u8.try_into();
assert_eq!(one, Ok(Enum::One));
let two: Result<Enum, _> = 2u8.try_into();
assert_eq!(
two.unwrap_err().to_string(),
"No discriminant in enum `Enum` matches the value `2`"
);
}
#[test]
fn ignores_extra_attributes() {
#[derive(Debug, Eq, PartialEq, TryFromPrimitive)]
#[allow(unused)]
#[repr(u8)]
enum Enum {
Zero,
#[allow(unused)]
One,
}
let zero: Result<Enum, _> = 0u8.try_into();
assert_eq!(zero, Ok(Enum::Zero));
let one: Result<Enum, _> = 1u8.try_into();
assert_eq!(one, Ok(Enum::One));
let two: Result<Enum, _> = 2u8.try_into();
assert_eq!(
two.unwrap_err().to_string(),
"No discriminant in enum `Enum` matches the value `2`"
);
}
#[test]
fn visibility_is_fine() {
#[derive(Debug, Eq, PartialEq, TryFromPrimitive)]
#[repr(u8)]
pub(crate) enum Enum {
Zero,
One,
}
let zero: Result<Enum, _> = 0u8.try_into();
assert_eq!(zero, Ok(Enum::Zero));
let one: Result<Enum, _> = 1u8.try_into();
assert_eq!(one, Ok(Enum::One));
let two: Result<Enum, _> = 2u8.try_into();
assert_eq!(
two.unwrap_err().to_string(),
"No discriminant in enum `Enum` matches the value `2`"
);
}
#[test]
fn error_variant_is_allowed() {
#[derive(Debug, Eq, PartialEq, TryFromPrimitive)]
#[repr(u8)]
pub enum Enum {
Ok,
Error,
}
let ok: Result<Enum, _> = 0u8.try_into();
assert_eq!(ok, Ok(Enum::Ok));
let err: Result<Enum, _> = 1u8.try_into();
assert_eq!(err, Ok(Enum::Error));
let unknown: Result<Enum, _> = 2u8.try_into();
assert_eq!(
unknown.unwrap_err().to_string(),
"No discriminant in enum `Enum` matches the value `2`"
);
}
#[test]
fn alternative_values() {
#[derive(Debug, Eq, PartialEq, TryFromPrimitive)]
#[repr(i8)]
enum Enum {
Zero = 0,
#[num_enum(alternatives = [-1, 2, 3])]
OneTwoThreeOrMinusOne = 1,
}
let minus_one: Result<Enum, _> = (-1i8).try_into();
assert_eq!(minus_one, Ok(Enum::OneTwoThreeOrMinusOne));
let zero: Result<Enum, _> = 0i8.try_into();
assert_eq!(zero, Ok(Enum::Zero));
let one: Result<Enum, _> = 1i8.try_into();
assert_eq!(one, Ok(Enum::OneTwoThreeOrMinusOne));
let two: Result<Enum, _> = 2i8.try_into();
assert_eq!(two, Ok(Enum::OneTwoThreeOrMinusOne));
let three: Result<Enum, _> = 3i8.try_into();
assert_eq!(three, Ok(Enum::OneTwoThreeOrMinusOne));
let four: Result<Enum, _> = 4i8.try_into();
assert_eq!(
four.unwrap_err().to_string(),
"No discriminant in enum `Enum` matches the value `4`"
);
}
#[test]
fn default_value() {
#[derive(Debug, Eq, PartialEq, TryFromPrimitive)]
#[repr(u8)]
enum Enum {
Zero = 0,
One = 1,
#[num_enum(default)]
Other = 2,
}
let zero: Result<Enum, _> = 0u8.try_into();
assert_eq!(zero, Ok(Enum::Zero));
let one: Result<Enum, _> = 1u8.try_into();
assert_eq!(one, Ok(Enum::One));
let two: Result<Enum, _> = 2u8.try_into();
assert_eq!(two, Ok(Enum::Other));
let max_value: Result<Enum, _> = u8::max_value().try_into();
assert_eq!(
max_value.unwrap_err().to_string(),
"No discriminant in enum `Enum` matches the value `255`"
);
}
#[test]
fn alternative_values_and_default_value() {
#[derive(Debug, Eq, PartialEq, TryFromPrimitive)]
#[repr(u8)]
enum Enum {
#[num_enum(default)]
Zero = 0,
One = 1,
#[num_enum(alternatives = [3])]
TwoOrThree = 2,
Four = 4,
}
let zero: Result<Enum, _> = 0u8.try_into();
assert_eq!(zero, Ok(Enum::Zero));
let one: Result<Enum, _> = 1u8.try_into();
assert_eq!(one, Ok(Enum::One));
let two: Result<Enum, _> = 2u8.try_into();
assert_eq!(two, Ok(Enum::TwoOrThree));
let three: Result<Enum, _> = 3u8.try_into();
assert_eq!(three, Ok(Enum::TwoOrThree));
let four: Result<Enum, _> = 4u8.try_into();
assert_eq!(four, Ok(Enum::Four));
let five: Result<Enum, _> = 5u8.try_into();
assert_eq!(
five.unwrap_err().to_string(),
"No discriminant in enum `Enum` matches the value `5`"
);
}
#[test]
fn try_from_primitive_number() {
#[derive(Debug, Eq, PartialEq, TryFromPrimitive)]
#[repr(u8)]
enum Enum {
#[num_enum(default)]
Whatever = 0,
}
// #[derive(FromPrimitive)] generates implementations for the following traits:
//
// - `TryFromPrimitive<T>`
// - `TryFrom<T>`
let try_from_primitive = Enum::try_from_primitive(0_u8);
assert_eq!(try_from_primitive, Ok(Enum::Whatever));
let try_from = Enum::try_from(0_u8);
assert_eq!(try_from, Ok(Enum::Whatever));
}
#[test]
fn custom_error() {
#[derive(Debug, Eq, PartialEq, TryFromPrimitive)]
#[num_enum(error_type(name = CustomError, constructor = CustomError::new))]
#[repr(u8)]
enum FirstNumber {
Zero,
One,
Two,
}
#[derive(Debug, Eq, PartialEq, TryFromPrimitive)]
#[num_enum(error_type(constructor = CustomError::new, name = CustomError))]
#[repr(u8)]
enum SecondNumber {
Zero,
One,
Two,
}
#[derive(Debug, PartialEq, Eq)]
struct CustomError {
bad_value: u8,
}
impl CustomError {
fn new(value: u8) -> CustomError {
CustomError { bad_value: value }
}
}
let zero: Result<FirstNumber, _> = 0u8.try_into();
assert_eq!(zero, Ok(FirstNumber::Zero));
let three: Result<FirstNumber, _> = 3u8.try_into();
assert_eq!(three.unwrap_err(), CustomError { bad_value: 3u8 });
let three: Result<SecondNumber, _> = 3u8.try_into();
assert_eq!(three.unwrap_err(), CustomError { bad_value: 3u8 });
}
// #[derive(FromPrimitive)] generates implementations for the following traits:
//
// - `FromPrimitive<T>`
// - `From<T>`
// - `TryFromPrimitive<T>`
// - `TryFrom<T>`

82
vendor/num_enum/tests/unsafe_from_primitive.rs vendored Normal file
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@@ -0,0 +1,82 @@
use ::num_enum::UnsafeFromPrimitive;
// Guard against https://github.com/illicitonion/num_enum/issues/27
mod alloc {}
mod core {}
mod num_enum {}
mod std {}
#[test]
fn has_unsafe_from_primitive_number() {
#[derive(Debug, Eq, PartialEq, UnsafeFromPrimitive)]
#[repr(u8)]
enum Enum {
Zero,
One,
}
unsafe {
assert_eq!(Enum::unchecked_transmute_from(0_u8), Enum::Zero);
assert_eq!(Enum::unchecked_transmute_from(1_u8), Enum::One);
}
}
#[test]
fn has_unsafe_from_primitive_number_with_alternatives_and_default_which_are_ignored() {
#[derive(Debug, Eq, PartialEq, UnsafeFromPrimitive)]
#[repr(u8)]
enum Enum {
Zero,
One,
#[num_enum(alternatives = [3, 4])]
Some,
#[num_enum(default)]
Many = 5,
}
unsafe {
assert_eq!(Enum::unchecked_transmute_from(0_u8), Enum::Zero);
assert_eq!(Enum::unchecked_transmute_from(1_u8), Enum::One);
assert_eq!(Enum::unchecked_transmute_from(2_u8), Enum::Some);
assert_eq!(Enum::unchecked_transmute_from(5_u8), Enum::Many);
// Any other conversions would be undefined behavior.
}
#[allow(deprecated)]
unsafe {
assert_eq!(Enum::from_unchecked(0_u8), Enum::Zero);
assert_eq!(Enum::from_unchecked(1_u8), Enum::One);
assert_eq!(Enum::from_unchecked(2_u8), Enum::Some);
assert_eq!(Enum::from_unchecked(5_u8), Enum::Many);
}
}
#[test]
fn has_unsafe_from_primitive_number_with_alternatives_and_std_default_which_are_ignored() {
#[derive(Debug, Default, Eq, PartialEq, UnsafeFromPrimitive)]
#[repr(u8)]
enum Enum {
Zero,
One,
#[num_enum(alternatives = [3, 4])]
Some,
#[default]
Many = 5,
}
unsafe {
assert_eq!(Enum::unchecked_transmute_from(0_u8), Enum::Zero);
assert_eq!(Enum::unchecked_transmute_from(1_u8), Enum::One);
assert_eq!(Enum::unchecked_transmute_from(2_u8), Enum::Some);
assert_eq!(Enum::unchecked_transmute_from(5_u8), Enum::Many);
// Any other conversions would be undefined behavior.
}
#[allow(deprecated)]
unsafe {
assert_eq!(Enum::from_unchecked(0_u8), Enum::Zero);
assert_eq!(Enum::from_unchecked(1_u8), Enum::One);
assert_eq!(Enum::from_unchecked(2_u8), Enum::Some);
assert_eq!(Enum::from_unchecked(5_u8), Enum::Many);
}
}