Package dev.yasint.regexsynth.dsl

Class CharClasses

java.lang.Object

dev.yasint.regexsynth.dsl.CharClasses

public final class CharClasses
extends java.lang.Object

Contains all the set constructs and character classes. RegexSynth supports all the POSIX character classes.

Since:

1.0.0

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	CharClasses.EscapeSequences	Escape sequences.
static class	CharClasses.Posix	Posix character classes.

Constructor Summary

Constructors

Constructor	Description
CharClasses()

Method Summary

Modifier and Type	Method	Description
static Expression	anything()	Matches any character, possibly including newline \n if the 's' RegexSynth.Flags DOTALL flag is turned on.
static Expression	difference(Expression setA, Expression setB)
static Expression	emptySet()	Constructs an empty set.
static Expression	includeUnicodeScript(Expression set, UnicodeScript script, boolean negated)
static Expression	intersection(Expression setA, Expression setB)
static Expression	negated(Expression set)	Simply converts a given set to a negated character class.
static Expression	rangedSet(int codepointA, int codepointB)	Creates a ranged regex charclass.
static Expression	rangedSet(java.lang.String from, java.lang.String to)	Creates a ranged regex charclass.
static Expression	simpleSet(int... codepoints)
static Expression	simpleSet(java.lang.String... characters)	Creates a simple regex charclass i.e.
static Expression	union(Expression setA, Expression setB)	Performs a union operation on two sets

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

CharClasses

public CharClasses()

Method Details

anything

public static Expression anything()

Matches any character, possibly including newline \n if the 's' RegexSynth.Flags DOTALL flag is turned on.

Returns:

match anything

negated

public static Expression negated(Expression set)

Simply converts a given set to a negated character class. [^acd]. This is a impure function. Because it mutates the source set.

Parameters:

set - source set to convert

Returns:

negated set expression

union

public static Expression union(Expression setA, Expression setB)

Performs a union operation on two sets

Parameters:

setA - source set

setB - target set

Returns:

result

difference

public static Expression difference(Expression setA, Expression setB)

intersection

public static Expression intersection(Expression setA, Expression setB)

includeUnicodeScript

public static Expression includeUnicodeScript(Expression set, UnicodeScript script, boolean negated)

rangedSet

public static Expression rangedSet(java.lang.String from, java.lang.String to)

Creates a ranged regex charclass. i.e. [A-Z]

Parameters:

from - staring char inclusive (surrogates or bmp)

to - ending char inclusive (surrogates or bmp)

Returns:

set expression

rangedSet

public static Expression rangedSet(int codepointA, int codepointB)

Creates a ranged regex charclass. i.e. [A-Z]

Parameters:

codepointA - staring codepoint inclusive

codepointB - ending codepoint inclusive

Returns:

set expression

simpleSet

public static Expression simpleSet(java.lang.String... characters)

Creates a simple regex charclass i.e. [135] will be optimized if it's a valid range. for example: if you pass a,b,c,d,f it will create [a-df]. but if you pass elements like a,z then it will only create a set for those two element without ranges [az]

Parameters:

characters - characters (surrogates or bmp)

Returns:

set expression

simpleSet

public static Expression simpleSet(int... codepoints)

Parameters:

codepoints - codepoints

Returns:

set expression

emptySet

public static Expression emptySet()

Constructs an empty set. This is useful when you only want to include unicode scripts into a set expression.

Returns:

empty set expression