Swift API

struct libtmux-swift latest

RegexPattern

A compiled regular expression with bounded memory and matching work.

Source and package

struct RegexPattern : struct RegexPattern struct [source] ¶: Description#

The supported dialect has literals, escaped punctuation, ., ^, $, grouping, noncapturing grouping, alternation, *, +, ?, counted repetitions, character classes and ranges, and ASCII \d, \s, and \w shorthands. Lookaround and backreferences are rejected.
Matching consumes Swift extended grapheme clusters. Literal equality uses Swift Character equality, including canonical equivalence. With Options.caseInsensitive, each character is compared through locale-independent lowercased() values; full multi-character case folding is not performed, so ss does not match ß. Dot excludes line terminators.
Swift's own Regex cannot take this job. Its matcher backtracks — on Swift 6.2, (a+)+b against twenty as takes 78 seconds — and a match is synchronous, so the deadline Server.waitForOutput(in:matching:stoppingAt:requiringFreshOutput:startingAt:timeout:tailLimit:) races cannot interrupt one that has started. A pattern here is bounded before it runs, which is also what makes one safe to accept from a client.

Members15#

==(_:_:) function Returns a Boolean value indicating whether two values are equal.
containsMatch(in:maximumWork:) method Returns whether the expression occurs in input before its positive work budget.
defaultMaximumWork: static let defaultMaximumWork: Int property
encode(to:) method Encodes this value into the given encoder.
hash(into:) method Hashes the essential components of this value by feeding them into the given hasher.
init(_:options:) method Compiles a bounded regular expression.
init(from:) method Creates a new instance by decoding from the given decoder.
maximumCompiledStates: static let maximumCompiledStates: Int property
maximumInputUTF8Bytes: static let maximumInputUTF8Bytes: Int property
maximumNesting: static let maximumNesting: Int property
maximumRepetition: static let maximumRepetition: Int property
maximumSourceUTF8Bytes: static let maximumSourceUTF8Bytes: Int property
options: let options: Options property Options applied during matching.
Options: struct Options struct Matching options encoded with the pattern.
source: let source: String property The source form preserved for encoding and diagnostics.

Reached through Equatable.!=(_:_:).

!=(_:_:) function inherited Returns a Boolean value indicating whether two values are not equal.