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comparison rust/hg-core/src/lib.rs @ 44519:52d40f8fb82d

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rust-matchers: add function to generate a regex matcher function This function will be used to help build the upcoming `IncludeMatcher`. While Re2 is still used and behind a feature flag, this function returns an error meant for fallback in the default case. Differential Revision: https://phab.mercurial-scm.org/D7922
author Rapha?l Gom?s <rgomes@octobus.net>
date Fri, 17 Jan 2020 11:29:33 +0100
parents d8d4fa9a7f18
children 483fce658e43
comparison
equal deleted inserted replaced
44518:b2e41723f886 44519:52d40f8fb82d
124 TooLong(usize), 124 TooLong(usize),
125 IO(std::io::Error), 125 IO(std::io::Error),
126 /// Needed a pattern that can be turned into a regex but got one that 126 /// Needed a pattern that can be turned into a regex but got one that
127 /// can't. This should only happen through programmer error. 127 /// can't. This should only happen through programmer error.
128 NonRegexPattern(IgnorePattern), 128 NonRegexPattern(IgnorePattern),
129 /// This is temporary, see `re2/mod.rs`.
130 /// This will cause a fallback to Python.
131 Re2NotInstalled,
129 } 132 }
130 133
131 impl ToString for PatternError { 134 impl ToString for PatternError {
132 fn to_string(&self) -> String { 135 fn to_string(&self) -> String {
133 match self { 136 match self {
145 } 148 }
146 PatternError::IO(e) => e.to_string(), 149 PatternError::IO(e) => e.to_string(),
147 PatternError::Path(e) => e.to_string(), 150 PatternError::Path(e) => e.to_string(),
148 PatternError::NonRegexPattern(pattern) => { 151 PatternError::NonRegexPattern(pattern) => {
149 format!("'{:?}' cannot be turned into a regex", pattern) 152 format!("'{:?}' cannot be turned into a regex", pattern)
153 }
154 PatternError::Re2NotInstalled => {
155 "Re2 is not installed, cannot use regex functionality."
156 .to_string()
150 } 157 }
151 } 158 }
152 } 159 }
153 } 160 }
154 161