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authorValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
committerValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
commita990de90fe41456a23e58bd087d2f107d321f3a1 (patch)
tree15afc392522a9e85dc3332235e311b7d39352ea9 /vendor/miette/src/chain.rs
parent3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff)
downloadfparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz
fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.zip
Deleted vendor folder
Diffstat (limited to 'vendor/miette/src/chain.rs')
-rw-r--r--vendor/miette/src/chain.rs117
1 files changed, 0 insertions, 117 deletions
diff --git a/vendor/miette/src/chain.rs b/vendor/miette/src/chain.rs
deleted file mode 100644
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--- a/vendor/miette/src/chain.rs
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@@ -1,117 +0,0 @@
-/*!
-Iterate over error `.source()` chains.
-
-NOTE: This module is taken wholesale from <https://crates.io/crates/eyre>.
-*/
-use std::error::Error as StdError;
-use std::vec;
-
-use ChainState::*;
-
-/// Iterator of a chain of source errors.
-///
-/// This type is the iterator returned by [`Report::chain`].
-///
-/// # Example
-///
-/// ```
-/// use miette::Report;
-/// use std::io;
-///
-/// pub fn underlying_io_error_kind(error: &Report) -> Option<io::ErrorKind> {
-/// for cause in error.chain() {
-/// if let Some(io_error) = cause.downcast_ref::<io::Error>() {
-/// return Some(io_error.kind());
-/// }
-/// }
-/// None
-/// }
-/// ```
-#[derive(Clone)]
-#[allow(missing_debug_implementations)]
-pub struct Chain<'a> {
- state: crate::chain::ChainState<'a>,
-}
-
-#[derive(Clone)]
-pub(crate) enum ChainState<'a> {
- Linked {
- next: Option<&'a (dyn StdError + 'static)>,
- },
- Buffered {
- rest: vec::IntoIter<&'a (dyn StdError + 'static)>,
- },
-}
-
-impl<'a> Chain<'a> {
- pub(crate) fn new(head: &'a (dyn StdError + 'static)) -> Self {
- Chain {
- state: ChainState::Linked { next: Some(head) },
- }
- }
-}
-
-impl<'a> Iterator for Chain<'a> {
- type Item = &'a (dyn StdError + 'static);
-
- fn next(&mut self) -> Option<Self::Item> {
- match &mut self.state {
- Linked { next } => {
- let error = (*next)?;
- *next = error.source();
- Some(error)
- }
- Buffered { rest } => rest.next(),
- }
- }
-
- fn size_hint(&self) -> (usize, Option<usize>) {
- let len = self.len();
- (len, Some(len))
- }
-}
-
-impl DoubleEndedIterator for Chain<'_> {
- fn next_back(&mut self) -> Option<Self::Item> {
- match &mut self.state {
- Linked { mut next } => {
- let mut rest = Vec::new();
- while let Some(cause) = next {
- next = cause.source();
- rest.push(cause);
- }
- let mut rest = rest.into_iter();
- let last = rest.next_back();
- self.state = Buffered { rest };
- last
- }
- Buffered { rest } => rest.next_back(),
- }
- }
-}
-
-impl ExactSizeIterator for Chain<'_> {
- fn len(&self) -> usize {
- match &self.state {
- Linked { mut next } => {
- let mut len = 0;
- while let Some(cause) = next {
- next = cause.source();
- len += 1;
- }
- len
- }
- Buffered { rest } => rest.len(),
- }
- }
-}
-
-impl Default for Chain<'_> {
- fn default() -> Self {
- Chain {
- state: ChainState::Buffered {
- rest: Vec::new().into_iter(),
- },
- }
- }
-}