Struct fancy_regex::Captures [−][src]
A set of capture groups found for a regex.
Implementations
impl<'t> Captures<'t>
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pub fn get(&self, i: usize) -> Option<Match<'t>>
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Get the capture group by its index in the regex.
If there is no match for that group or the index does not correspond to a group, None
is
returned. The index 0 returns the whole match.
pub fn name(&self, name: &str) -> Option<Match<'t>>
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Returns the match for a named capture group. Returns None
the capture
group did not match or if there is no group with the given name.
pub fn expand(&self, replacement: &str, dst: &mut String)
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Expands all instances of $group
in replacement
to the corresponding
capture group name
, and writes them to the dst
buffer given.
group
may be an integer corresponding to the index of the
capture group (counted by order of opening parenthesis where \0
is the
entire match) or it can be a name (consisting of letters, digits or
underscores) corresponding to a named capture group.
If group
isn't a valid capture group (whether the name doesn't exist
or isn't a valid index), then it is replaced with the empty string.
The longest possible name is used. e.g., $1a
looks up the capture
group named 1a
and not the capture group at index 1
. To exert more
precise control over the name, use braces, e.g., ${1}a
.
To write a literal $
, use $$
.
For more control over expansion, see Expander
.
pub fn iter<'c>(&'c self) -> SubCaptureMatches<'c, 't>ⓘNotable traits for SubCaptureMatches<'c, 't>
impl<'c, 't> Iterator for SubCaptureMatches<'c, 't> type Item = Option<Match<'t>>;
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Notable traits for SubCaptureMatches<'c, 't>
impl<'c, 't> Iterator for SubCaptureMatches<'c, 't> type Item = Option<Match<'t>>;
Iterate over the captured groups in order in which they appeared in the regex. The first capture corresponds to the whole match.
pub fn len(&self) -> usize
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How many groups were captured. This is always at least 1 because group 0 returns the whole match.
Trait Implementations
Auto Trait Implementations
impl<'t> RefUnwindSafe for Captures<'t>
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impl<'t> Send for Captures<'t>
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impl<'t> Sync for Captures<'t>
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impl<'t> Unpin for Captures<'t>
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impl<'t> UnwindSafe for Captures<'t>
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Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,