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pcre2: use jit_if_available

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This will allow PCRE2 to fall back to non-JIT matching when running on
platforms without JIT support.

ref https://github.com/BurntSushi/rust-pcre2/issues/3
This commit is contained in:
Andrew Gallant
2018-09-08 17:12:14 -04:00
parent 0f7494216f
commit eb18da0450
6 changed files with 34 additions and 17 deletions
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22
grep-pcre2/src/matcher.rs
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@@ -199,16 +199,34 @@ impl RegexMatcherBuilder {
self
}
/// Enable PCRE2's JIT.
/// Enable PCRE2's JIT and return an error if it's not available.
///
/// This generally speeds up matching quite a bit. The downside is that it
/// can increase the time it takes to compile a pattern.
///
/// This is disabled by default.
/// If the JIT isn't available or if JIT compilation returns an error, then
/// regex compilation will fail with the corresponding error.
///
/// This is disabled by default, and always overrides `jit_if_available`.
pub fn jit(&mut self, yes: bool) -> &mut RegexMatcherBuilder {
self.builder.jit(yes);
self
}
/// Enable PCRE2's JIT if it's available.
///
/// This generally speeds up matching quite a bit. The downside is that it
/// can increase the time it takes to compile a pattern.
///
/// If the JIT isn't available or if JIT compilation returns an error,
/// then a debug message with the error will be emitted and the regex will
/// otherwise silently fall back to non-JIT matching.
///
/// This is disabled by default, and always overrides `jit`.
pub fn jit_if_available(&mut self, yes: bool) -> &mut RegexMatcherBuilder {
self.builder.jit_if_available(yes);
self
}
}
/// An implementation of the `Matcher` trait using PCRE2.