Struct regex_cache::LazyRegexBuilder
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pub struct LazyRegexBuilder { /* fields omitted */ }
A configurable builder for a lazy Regex
.
Methods
impl LazyRegexBuilder
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pub fn new(source: &str) -> LazyRegexBuilder
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Create a new regular expression builder with the given pattern.
If the pattern is invalid, then an error will be returned when
compile
is called.
pub fn build(&self) -> Result<LazyRegex, Error>
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Consume the builder and compile the regular expression.
Note that calling as_str
on the resulting Regex
will produce the
pattern given to new
verbatim. Notably, it will not incorporate any
of the flags set on this builder.
pub fn case_insensitive(&mut self, yes: bool) -> &mut LazyRegexBuilder
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Set the value for the case insensitive (i
) flag.
pub fn multi_line(&mut self, yes: bool) -> &mut LazyRegexBuilder
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Set the value for the multi-line matching (m
) flag.
pub fn dot_matches_new_line(&mut self, yes: bool) -> &mut LazyRegexBuilder
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Set the value for the any character (s
) flag, where in .
matches
anything when s
is set and matches anything except for new line when
it is not set (the default).
N.B. "matches anything" means "any byte" for regex::bytes::Regex
expressions and means "any Unicode scalar value" for regex::Regex
expressions.
pub fn swap_greed(&mut self, yes: bool) -> &mut LazyRegexBuilder
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Set the value for the greedy swap (U
) flag.
pub fn ignore_whitespace(&mut self, yes: bool) -> &mut LazyRegexBuilder
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Set the value for the ignore whitespace (x
) flag.
pub fn unicode(&mut self, yes: bool) -> &mut LazyRegexBuilder
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Set the value for the Unicode (u
) flag.
pub fn size_limit(&mut self, limit: usize) -> &mut LazyRegexBuilder
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Set the approximate size limit of the compiled regular expression.
This roughly corresponds to the number of bytes occupied by a single compiled program. If the program exceeds this number, then a compilation error is returned.
pub fn dfa_size_limit(&mut self, limit: usize) -> &mut LazyRegexBuilder
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Set the approximate size of the cache used by the DFA.
This roughly corresponds to the number of bytes that the DFA will use while searching.
Note that this is a per thread limit. There is no way to set a global limit. In particular, if a regex is used from multiple threads simulanteously, then each thread may use up to the number of bytes specified here.
Trait Implementations
impl Clone for LazyRegexBuilder
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fn clone(&self) -> LazyRegexBuilder
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Returns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)
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Performs copy-assignment from source
. Read more
impl Eq for LazyRegexBuilder
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impl PartialEq for LazyRegexBuilder
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fn eq(&self, __arg_0: &LazyRegexBuilder) -> bool
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This method tests for self
and other
values to be equal, and is used by ==
. Read more
fn ne(&self, __arg_0: &LazyRegexBuilder) -> bool
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This method tests for !=
.