Files
addr2line
adler
aho_corasick
ansi_term
arraydeque
as_slice
atty
backtrace
base64
bincode_core
bitflags
byteorder
bytes
capnp
capnp_futures
capnp_rpc
cfg_if
chrono
clap
ctrlc
derivative
dlib
downcast_rs
enumflags2
enumflags2_derive
evdev_rs
evdev_sys
failure
failure_derive
flexi_logger
futures
futures_channel
futures_core
futures_executor
futures_io
futures_macro
futures_sink
futures_task
futures_util
async_await
future
io
lock
sink
stream
task
generic_array
getrandom
gimli
glob
hash32
heapless
hid_io_core
hid_io_protocol
hidapi
install_service
lazy_static
libc
libloading
libudev_sys
log
memchr
memmap
miniz_oxide
mio
nanoid
nix
num_cpus
num_enum
num_enum_derive
num_integer
num_traits
object
once_cell
open
pem
pin_project_lite
pin_utils
ppv_lite86
proc_macro2
proc_macro_hack
proc_macro_nested
quote
rand
rand_chacha
rand_core
rcgen
regex
regex_syntax
remove_dir_all
ring
rustc_demangle
rustls
scoped_tls
sct
serde
serde_derive
slab
smallvec
spin
stable_deref_trait
strsim
syn
synstructure
sys_info
tempfile
textwrap
thiserror
thiserror_impl
time
tokio
future
io
loom
macros
net
park
runtime
stream
sync
task
time
util
tokio_macros
tokio_rustls
tokio_util
typenum
udev
uhid_virt
uhidrs_sys
unicode_width
unicode_xid
untrusted
vec_map
wayland_client
wayland_commons
wayland_sys
webpki
which
x11
xcb
xkbcommon
yansi
yasna
zwp_virtual_keyboard
 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
#![cfg_attr(feature = "external_doc", feature(external_doc))]
#![cfg_attr(feature = "external_doc", doc(include = "../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::{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;

    const NAME: &'static str;

    fn try_from_primitive(number: Self::Primitive) -> Result<Self, TryFromPrimitiveError<Self>>;
}

#[derive(::derivative::Derivative)]
#[derivative( // use derivative to remove incorrect bound on `Enum` parameter. See https://github.com/rust-lang/rust/issues/26925
    Debug(bound = ""),
    Clone(bound = ""),
    Copy(bound = ""),
    PartialEq(bound = ""),
    Eq(bound = "")
)]
pub struct TryFromPrimitiveError<Enum: TryFromPrimitive> {
    pub number: Enum::Primitive,
}

impl<Enum: TryFromPrimitive> fmt::Display for TryFromPrimitiveError<Enum> {
    fn fmt(self: &'_ Self, stream: &'_ mut fmt::Formatter<'_>) -> fmt::Result {
        write!(
            stream,
            "No discriminant in enum `{name}` matches the value `{input:?}`",
            name = Enum::NAME,
            input = self.number,
        )
    }
}

#[cfg(feature = "std")]
impl<Enum: TryFromPrimitive> ::std::error::Error for TryFromPrimitiveError<Enum> {}