RegEx - Klyn API

RegEx

classin packageklyn.regex

public class RegEx extends Object

Object

└ RegEx

Regular expressions are natively supported by the language, following Perl-like syntax. The RegEx class provides methods for matching, searching, replacing, and splitting strings based on regular expression patterns.

Here are some examples of how to use the RegEx class:

regex = RegEx("^\\d+$")

You can also define regex patterns using raw string literals to avoid escaping backslashes.

regex = RegEx(r"^\d+$")

Notice also that Klyn language support a native syntax like Perl or JavaScript for regex literals, which can be used directly without the need for escaping backslashes.

regex = /^\d+$/

Literals, character classes (including ranges and negated classes), and quantifiers operate on Unicode scalar characters, not individual UTF-8 bytes. A dot matches one character except CR, LF, U+2028 and U+2029. Use [^] to include line terminators. Capture groups keep their original numbering.

assert RegEx("^[a-z\u00E9]+$").matches("caf\u00E9")
assert RegEx("^[^a]$").matches("\U0001F600")
assert not RegEx(".").matches("\n")

Properties

Modifier and Type	Member	Description
public property	flags `flags as Int`	Regular-expression option bits.
public property	pattern `pattern as String`	Regular-expression source.

Inherited Properties

propertyInherited Properties from Object: type

Constructors

Modifier and Type	Member	Description
public native	RegEx `RegEx(pattern as String, flags as Int = 0) throws RegExException`	RegEx constructor.

Methods

Modifier and Type	Member	Description
public	find `find(input as String) as MatchResult throws RegExException`	Finds the first occurrence of the pattern in the input.
public	findAll `findAll(input as String) as Array<MatchResult> throws RegExException`	Finds all occurrences of the pattern in the input.
public native	matcher `matcher(input as String) as RegExMatcher throws RegExException`	Creates a matcher for the regular expression.
public native	matches `matches(input as String) as Boolean throws RegExException`	Checks if the input matches the pattern.
public native	replace `replace(input as String, replacement as String) as String throws RegExException`	Replaces all occurrences of the pattern with a replacement string.
public native	replaceFirst `replaceFirst(input as String, replacement as String) as String throws RegExException`	Replaces the first occurrence of the pattern with a replacement string.
public native	replaceLast `replaceLast(input as String, replacement as String) as String throws RegExException`	Replaces the last occurrence of the pattern with a replacement string.
public native	split `split(input as String) as Array<String> throws RegExException`	Splits the input into an array of substrings using the pattern as a delimiter.

Inherited Methods

methodInherited Methods from Object: deepCopy, fromJson, hash, toDict, toJson, toMap, toString, toXml