Class BasicAutomata

Construction of basic automata.

Note

This API is experimental and might change in incompatible ways in the next release.

Inheritance

object

BasicAutomata

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: Lucene.Net.Util.Automaton

Assembly: Lucene.Net.dll

Syntax

public static class BasicAutomata

Methods

MakeAnyChar()

Returns a new (deterministic) automaton that accepts any single codepoint.

Declaration

public static Automaton MakeAnyChar()

Returns

Type	Description
Automaton

MakeAnyString()

Returns a new (deterministic) automaton that accepts all strings.

Declaration

public static Automaton MakeAnyString()

Returns

Type	Description
Automaton

MakeChar(int)

Returns a new (deterministic) automaton that accepts a single codepoint of the given value.

Declaration

public static Automaton MakeChar(int c)

Parameters

Type	Name	Description
int	c

Returns

Type	Description
Automaton

MakeCharRange(int, int)

Returns a new (deterministic) automaton that accepts a single codepoint whose value is in the given interval (including both end points).

Declaration

public static Automaton MakeCharRange(int min, int max)

Parameters

Type	Name	Description
int	min
int	max

Returns

Type	Description
Automaton

MakeEmpty()

Returns a new (deterministic) automaton with the empty language.

Declaration

public static Automaton MakeEmpty()

Returns

Type	Description
Automaton

MakeEmptyString()

Returns a new (deterministic) automaton that accepts only the empty string.

Declaration

public static Automaton MakeEmptyString()

Returns

Type	Description
Automaton

MakeInterval(int, int, int)

Returns a new automaton that accepts strings representing decimal non-negative integers in the given interval.

Declaration

public static Automaton MakeInterval(int min, int max, int digits)

Parameters

Type	Name	Description
int	min	Minimal value of interval.
int	max	Maximal value of interval (both end points are included in the interval).
int	digits	If > 0, use fixed number of digits (strings must be prefixed by 0's to obtain the right length) - otherwise, the number of digits is not fixed.

Returns

Type	Description
Automaton

Exceptions

Type	Condition
ArgumentException	If min > max or if numbers in the interval cannot be expressed with the given fixed number of digits.

MakeString(int[], int, int)

Construction of basic automata.

Note

This API is experimental and might change in incompatible ways in the next release.

Declaration

public static Automaton MakeString(int[] word, int offset, int length)

Parameters

Type	Name	Description
int[]	word
int	offset
int	length

Returns

Type	Description
Automaton

MakeString(string)

Returns a new (deterministic) automaton that accepts the single given string.

Declaration

public static Automaton MakeString(string s)

Parameters

Type	Name	Description
string	s

Returns

Type	Description
Automaton

MakeStringUnion(ICollection<BytesRef>)

Returns a new (deterministic and minimal) automaton that accepts the union of the given collection of BytesRefs representing UTF-8 encoded strings.

Declaration

public static Automaton MakeStringUnion(ICollection<BytesRef> utf8Strings)

Parameters

Type	Name	Description
ICollection<BytesRef>	utf8Strings	The input strings, UTF-8 encoded. The collection must be in sorted order.

Returns

Type	Description
Automaton	An Automaton accepting all input strings. The resulting automaton is codepoint based (full unicode codepoints on transitions).