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-rw-r--r--third_party/rust/tempfile/src/error.rs45
1 files changed, 45 insertions, 0 deletions
diff --git a/third_party/rust/tempfile/src/error.rs b/third_party/rust/tempfile/src/error.rs
new file mode 100644
index 0000000000..ed6b6cc8d1
--- /dev/null
+++ b/third_party/rust/tempfile/src/error.rs
@@ -0,0 +1,45 @@
+use std::path::PathBuf;
+use std::{error, fmt, io};
+
+#[derive(Debug)]
+struct PathError {
+ path: PathBuf,
+ err: io::Error,
+}
+
+impl fmt::Display for PathError {
+ fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+ write!(f, "{} at path {:?}", self.err, self.path)
+ }
+}
+
+impl error::Error for PathError {
+ fn source(&self) -> Option<&(dyn error::Error + 'static)> {
+ self.err.source()
+ }
+}
+
+pub(crate) trait IoResultExt<T> {
+ fn with_err_path<F, P>(self, path: F) -> Self
+ where
+ F: FnOnce() -> P,
+ P: Into<PathBuf>;
+}
+
+impl<T> IoResultExt<T> for Result<T, io::Error> {
+ fn with_err_path<F, P>(self, path: F) -> Self
+ where
+ F: FnOnce() -> P,
+ P: Into<PathBuf>,
+ {
+ self.map_err(|e| {
+ io::Error::new(
+ e.kind(),
+ PathError {
+ path: path().into(),
+ err: e,
+ },
+ )
+ })
+ }
+}