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use crate::convert::Infallible;
use crate::fmt;
#[stable(feature = "try_from", since = "1.34.0")]
#[derive(Debug, Copy, Clone, PartialEq, Eq)]
pub struct TryFromIntError(pub(crate) ());
impl TryFromIntError {
#[unstable(
feature = "int_error_internals",
reason = "available through Error trait and this method should \
not be exposed publicly",
issue = "none"
)]
#[doc(hidden)]
pub fn __description(&self) -> &str {
"out of range integral type conversion attempted"
}
}
#[stable(feature = "try_from", since = "1.34.0")]
impl fmt::Display for TryFromIntError {
fn fmt(&self, fmt: &mut fmt::Formatter<'_>) -> fmt::Result {
self.__description().fmt(fmt)
}
}
#[stable(feature = "try_from", since = "1.34.0")]
impl From<Infallible> for TryFromIntError {
fn from(x: Infallible) -> TryFromIntError {
match x {}
}
}
#[unstable(feature = "never_type", issue = "35121")]
impl From<!> for TryFromIntError {
fn from(never: !) -> TryFromIntError {
match never {}
}
}
#[derive(Debug, Clone, PartialEq, Eq)]
#[stable(feature = "rust1", since = "1.0.0")]
pub struct ParseIntError {
pub(super) kind: IntErrorKind,
}
#[unstable(
feature = "int_error_matching",
reason = "it can be useful to match errors when making error messages \
for integer parsing",
issue = "22639"
)]
#[derive(Debug, Clone, PartialEq, Eq)]
#[non_exhaustive]
pub enum IntErrorKind {
Empty,
InvalidDigit,
PosOverflow,
NegOverflow,
Zero,
}
impl ParseIntError {
#[unstable(
feature = "int_error_matching",
reason = "it can be useful to match errors when making error messages \
for integer parsing",
issue = "22639"
)]
pub fn kind(&self) -> &IntErrorKind {
&self.kind
}
#[unstable(
feature = "int_error_internals",
reason = "available through Error trait and this method should \
not be exposed publicly",
issue = "none"
)]
#[doc(hidden)]
pub fn __description(&self) -> &str {
match self.kind {
IntErrorKind::Empty => "cannot parse integer from empty string",
IntErrorKind::InvalidDigit => "invalid digit found in string",
IntErrorKind::PosOverflow => "number too large to fit in target type",
IntErrorKind::NegOverflow => "number too small to fit in target type",
IntErrorKind::Zero => "number would be zero for non-zero type",
}
}
}
#[stable(feature = "rust1", since = "1.0.0")]
impl fmt::Display for ParseIntError {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
self.__description().fmt(f)
}
}