Package jflex

Class IntCharSet

java.lang.Object

jflex.IntCharSet

public final class IntCharSet
extends java.lang.Object

CharSet implemented with intervals

[fixme: optimizations possible]

Version:

JFlex 1.7.0

Field Summary

Fields

Modifier and Type	Field	Description
private static boolean	DEBUG
private java.util.List<Interval>	intervals
private int	pos

Constructor Summary

Constructors

Constructor	Description
IntCharSet()	Constructor for IntCharSet.
IntCharSet(int c)	Constructor for IntCharSet.
IntCharSet(java.util.List<Interval> chars)	Constructor for IntCharSet.
IntCharSet(Interval interval)	Constructor for IntCharSet.

Method Summary

Modifier and Type	Method	Description
void	add(int c)	add.
IntCharSet	add(IntCharSet set)	add.
void	add(Interval interval)	add.
IntCharSet	and(IntCharSet set)	Intersects two sets.
boolean	contains(int singleChar)	contains.
boolean	containsElements()	Returns whether the set contains elements.
IntCharSet	copy()	Return a (deep) copy of this char set
boolean	equals(java.lang.Object o)
IntCharSet	getCaseless(UnicodeProperties unicodeProperties)	Create a caseless version of this charset.
java.util.List<Interval>	getIntervals()	Returns the intervals.
Interval	getNext()	Returns the next interval.
private int	indexOf(int c)	returns the index of the interval that contains the character c, -1 if there is no such interval
private int	max(int a, int b)
private int	min(int a, int b)
int	numIntervals()	Returns the number of Intervals.
void	sub(IntCharSet set)	Returns the relative complement of this set relative to the provided set.
java.lang.String	toString()	Make a string representation of this char set.

Methods inherited from class java.lang.Object

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

Field Detail

DEBUG

private static final boolean DEBUG

See Also:

Constant Field Values

intervals

private java.util.List<Interval> intervals

pos

private int pos

Constructor Detail

IntCharSet

public IntCharSet()

Constructor for IntCharSet.

IntCharSet

public IntCharSet(int c)

Constructor for IntCharSet.

Parameters:

c - a int.

IntCharSet

public IntCharSet(Interval interval)

Constructor for IntCharSet.

Parameters:

interval - a Interval object.

IntCharSet

public IntCharSet(java.util.List<Interval> chars)

Constructor for IntCharSet.

Parameters:

chars - a List object.

Method Detail

indexOf

private int indexOf(int c)

returns the index of the interval that contains the character c, -1 if there is no such interval

Parameters:

c - the character

Returns:

the index of the enclosing interval, -1 if no such interval

add

public IntCharSet add(IntCharSet set)

add.

Parameters:

set - a IntCharSet object.

Returns:

a IntCharSet object.

add

public void add(Interval interval)

add.

Parameters:

interval - a Interval object.

add

public void add(int c)

add.

Parameters:

c - a int.

contains

public boolean contains(int singleChar)

contains.

Parameters:

singleChar - a int.

Returns:

a boolean.

equals

public boolean equals(java.lang.Object o)

o instanceof Interval

Overrides:

equals in class java.lang.Object

min

private int min(int a,
                int b)

max

private int max(int a,
                int b)

and

public IntCharSet and(IntCharSet set)

Intersects two sets.

Parameters:

set - a IntCharSet object.

Returns:

the IntCharSet common to the two sets.

sub

public void sub(IntCharSet set)

Returns the relative complement of this set relative to the provided set.

Parameters:

set - a IntCharSet to substract from this set.

containsElements

public boolean containsElements()

Returns whether the set contains elements.

Returns:

Whether the set is non-empty.

numIntervals

public int numIntervals()

Returns the number of Intervals.

Returns:

number of intervals.

getIntervals

public java.util.List<Interval> getIntervals()

Returns the intervals.

Returns:

a List object.

getNext

public Interval getNext()

Returns the next interval.

Returns:

the next Interval.

getCaseless

public IntCharSet getCaseless(UnicodeProperties unicodeProperties)

Create a caseless version of this charset.

The caseless version contains all characters of this char set, and additionally all lower/upper/title case variants of the characters in this set.

Parameters:

unicodeProperties - The Unicode Properties to use when generating caseless equivalence classes.

Returns:

a caseless copy of this set

toString

public java.lang.String toString()

Make a string representation of this char set.

Overrides:

toString in class java.lang.Object

Returns:

a string representing this char set.

copy

public IntCharSet copy()

Return a (deep) copy of this char set

Returns:

the copy