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comparison rust/hg-core/src/errors.rs @ 48464:abeae090ce67

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rust: Add Vfs::write_atomic This method writes to a temporary file then renames in place Differential Revision: https://phab.mercurial-scm.org/D11836
author Simon Sapin <simon.sapin@octobus.net>
date Mon, 29 Nov 2021 18:46:04 +0100
parents cf5f8da2244c
children 3f86ee422095
comparison
equal deleted inserted replaced
48463:5734b03ecf3e 48464:abeae090ce67
149 /// example.txt” instead of just “File not found”. 149 /// example.txt” instead of just “File not found”.
150 /// 150 ///
151 /// Converts a `Result` with `std::io::Error` into one with `HgError`. 151 /// Converts a `Result` with `std::io::Error` into one with `HgError`.
152 fn when_reading_file(self, path: &std::path::Path) -> Result<T, HgError>; 152 fn when_reading_file(self, path: &std::path::Path) -> Result<T, HgError>;
153 153
154 fn when_writing_file(self, path: &std::path::Path) -> Result<T, HgError>;
155
154 fn with_context( 156 fn with_context(
155 self, 157 self,
156 context: impl FnOnce() -> IoErrorContext, 158 context: impl FnOnce() -> IoErrorContext,
157 ) -> Result<T, HgError>; 159 ) -> Result<T, HgError>;
158 } 160 }
159 161
160 impl<T> IoResultExt<T> for std::io::Result<T> { 162 impl<T> IoResultExt<T> for std::io::Result<T> {
161 fn when_reading_file(self, path: &std::path::Path) -> Result<T, HgError> { 163 fn when_reading_file(self, path: &std::path::Path) -> Result<T, HgError> {
162 self.with_context(|| IoErrorContext::ReadingFile(path.to_owned())) 164 self.with_context(|| IoErrorContext::ReadingFile(path.to_owned()))
165 }
166
167 fn when_writing_file(self, path: &std::path::Path) -> Result<T, HgError> {
168 self.with_context(|| IoErrorContext::WritingFile(path.to_owned()))
163 } 169 }
164 170
165 fn with_context( 171 fn with_context(
166 self, 172 self,
167 context: impl FnOnce() -> IoErrorContext, 173 context: impl FnOnce() -> IoErrorContext,