library/std/src/io/error/repr_unpacked.rs

   1 //! This is a fairly simple unpacked error representation that's used on
   2 //! non-64bit targets, where the packed 64 bit representation wouldn't work, and
   3 //! would have no benefit.
   4
   5 use super::{Custom, ErrorData, ErrorKind, RawOsError, SimpleMessage};
   6 use alloc::boxed::Box;
   7
   8 type Inner = ErrorData<Box<Custom>>;
   9
  10 pub(super) struct Repr(Inner);
  11
  12 impl Repr {
  13     #[inline]
  14     pub(super) fn new(dat: ErrorData<Box<Custom>>) -> Self {
  15         Self(dat)
  16     }
  17     pub(super) fn new_custom(b: Box<Custom>) -> Self {
  18         Self(Inner::Custom(b))
  19     }
  20     #[inline]
  21     pub(super) fn new_os(code: RawOsError) -> Self {
  22         Self(Inner::Os(code))
  23     }
  24     #[inline]
  25     pub(super) fn new_simple(kind: ErrorKind) -> Self {
  26         Self(Inner::Simple(kind))
  27     }
  28     #[inline]
  29     pub(super) const fn new_simple_message(m: &'static SimpleMessage) -> Self {
  30         Self(Inner::SimpleMessage(m))
  31     }
  32     #[inline]
  33     pub(super) fn into_data(self) -> ErrorData<Box<Custom>> {
  34         self.0
  35     }
  36     #[inline]
  37     pub(super) fn data(&self) -> ErrorData<&Custom> {
  38         match &self.0 {
  39             Inner::Os(c) => ErrorData::Os(*c),
  40             Inner::Simple(k) => ErrorData::Simple(*k),
  41             Inner::SimpleMessage(m) => ErrorData::SimpleMessage(*m),
  42             Inner::Custom(m) => ErrorData::Custom(&*m),
  43         }
  44     }
  45     #[inline]
  46     pub(super) fn data_mut(&mut self) -> ErrorData<&mut Custom> {
  47         match &mut self.0 {
  48             Inner::Os(c) => ErrorData::Os(*c),
  49             Inner::Simple(k) => ErrorData::Simple(*k),
  50             Inner::SimpleMessage(m) => ErrorData::SimpleMessage(*m),
  51             Inner::Custom(m) => ErrorData::Custom(&mut *m),
  52         }
  53     }
  54 }