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pub use crate::format::parse::Error as Parse;
#[cfg(not(feature = "std"))]
use alloc::boxed::Box;
use core::fmt;
#[allow(clippy::missing_docs_in_private_items)]
#[cfg_attr(__time_02_supports_non_exhaustive, non_exhaustive)]
#[derive(Debug, Clone, PartialEq, Eq)]
pub enum Error {
ConversionRange(ConversionRange),
ComponentRange(Box<ComponentRange>),
Parse(Parse),
IndeterminateOffset(IndeterminateOffset),
Format(Format),
#[cfg(not(__time_02_supports_non_exhaustive))]
#[doc(hidden)]
__NonExhaustive,
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
Error::ConversionRange(e) => e.fmt(f),
Error::ComponentRange(e) => e.fmt(f),
Error::Parse(e) => e.fmt(f),
Error::IndeterminateOffset(e) => e.fmt(f),
Error::Format(e) => e.fmt(f),
#[cfg(not(__time_02_supports_non_exhaustive))]
Error::__NonExhaustive => unreachable!(),
}
}
}
#[cfg(feature = "std")]
impl std::error::Error for Error {
fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
match self {
Error::ConversionRange(err) => Some(err),
Error::ComponentRange(box_err) => Some(box_err.as_ref()),
Error::Parse(err) => Some(err),
Error::IndeterminateOffset(err) => Some(err),
Error::Format(err) => Some(err),
#[cfg(not(__time_02_supports_non_exhaustive))]
Error::__NonExhaustive => unreachable!(),
}
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub struct ConversionRange;
impl fmt::Display for ConversionRange {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.write_str("Source value is out of range for the target type")
}
}
#[cfg(feature = "std")]
impl std::error::Error for ConversionRange {}
impl From<ConversionRange> for Error {
fn from(original: ConversionRange) -> Self {
Error::ConversionRange(original)
}
}
#[cfg_attr(__time_02_supports_non_exhaustive, non_exhaustive)]
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
pub struct ComponentRange {
pub name: &'static str,
pub minimum: i64,
pub maximum: i64,
pub value: i64,
pub conditional_range: bool,
#[cfg(not(__time_02_supports_non_exhaustive))]
#[doc(hidden)]
pub(crate) __non_exhaustive: (),
}
impl fmt::Display for ComponentRange {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(
f,
"{} must be in the range {}..={}",
self.name, self.minimum, self.maximum
)?;
if self.conditional_range {
write!(f, ", given values of other parameters")?;
}
Ok(())
}
}
impl From<ComponentRange> for Error {
fn from(original: ComponentRange) -> Self {
Error::ComponentRange(Box::new(original))
}
}
#[cfg(feature = "std")]
impl std::error::Error for ComponentRange {}
impl From<Parse> for Error {
fn from(original: Parse) -> Self {
Error::Parse(original)
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub struct IndeterminateOffset;
impl fmt::Display for IndeterminateOffset {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.write_str("The system's UTC offset could not be determined")
}
}
#[cfg(feature = "std")]
impl std::error::Error for IndeterminateOffset {}
impl From<IndeterminateOffset> for Error {
fn from(original: IndeterminateOffset) -> Self {
Error::IndeterminateOffset(original)
}
}
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, PartialOrd, Ord)]
pub enum Format {
InsufficientTypeInformation,
StdFmtError,
#[cfg(not(__time_02_supports_non_exhaustive))]
#[doc(hidden)]
__NonExhaustive,
}
impl fmt::Display for Format {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
Format::InsufficientTypeInformation => {
f.write_str("The format provided requires more information than the type provides.")
}
Format::StdFmtError => fmt::Error.fmt(f),
#[cfg(not(__time_02_supports_non_exhaustive))]
Format::__NonExhaustive => unreachable!(),
}
}
}
#[cfg(feature = "std")]
impl std::error::Error for Format {
fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
match self {
Format::StdFmtError => Some(&fmt::Error),
_ => None,
}
}
}
impl From<fmt::Error> for Format {
fn from(_: fmt::Error) -> Self {
Format::StdFmtError
}
}
impl From<Format> for Error {
fn from(error: Format) -> Self {
Error::Format(error)
}
}
#[cfg(all(test, feature = "std"))]
mod test {
use super::*;
use std::error::Error as ParseError;
#[test]
fn indeterminate_offset() {
assert_eq!(
IndeterminateOffset.to_string(),
Error::IndeterminateOffset(IndeterminateOffset).to_string()
);
assert!(match Error::from(IndeterminateOffset).source() {
Some(error) => error.is::<IndeterminateOffset>(),
None => false,
});
}
}