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
   7 type Inner = ErrorData<Box<Custom>>;
   8
   9 pub(super) struct Repr(Inner);
  10
  11 impl Repr {
  12     #[inline]
  13     pub(super) fn new(dat: ErrorData<Box<Custom>>) -> Self {
  14         Self(dat)
  15     }
  16     pub(super) fn new_custom(b: Box<Custom>) -> Self {
  17         Self(Inner::Custom(b))
  18     }
  19     #[inline]
  20     pub(super) fn new_os(code: RawOsError) -> Self {
  21         Self(Inner::Os(code))
  22     }
  23     #[inline]
  24     pub(super) fn new_simple(kind: ErrorKind) -> Self {
  25         Self(Inner::Simple(kind))
  26     }
  27     #[inline]
  28     pub(super) const fn new_simple_message(m: &'static SimpleMessage) -> Self {
  29         Self(Inner::SimpleMessage(m))
  30     }
  31     #[inline]
  32     pub(super) fn into_data(self) -> ErrorData<Box<Custom>> {
  33         self.0
  34     }
  35     #[inline]
  36     pub(super) fn data(&self) -> ErrorData<&Custom> {
  37         match &self.0 {
  38             Inner::Os(c) => ErrorData::Os(*c),
  39             Inner::Simple(k) => ErrorData::Simple(*k),
  40             Inner::SimpleMessage(m) => ErrorData::SimpleMessage(*m),
  41             Inner::Custom(m) => ErrorData::Custom(&*m),
  42         }
  43     }
  44     #[inline]
  45     pub(super) fn data_mut(&mut self) -> ErrorData<&mut Custom> {
  46         match &mut self.0 {
  47             Inner::Os(c) => ErrorData::Os(*c),
  48             Inner::Simple(k) => ErrorData::Simple(*k),
  49             Inner::SimpleMessage(m) => ErrorData::SimpleMessage(*m),
  50             Inner::Custom(m) => ErrorData::Custom(&mut *m),
  51         }
  52     }
  53 }