com.oracle.truffle.regex.tregex.matchers

Class RangeListMatcher

java.lang.Object

com.oracle.truffle.regex.tregex.matchers.CharMatcher

com.oracle.truffle.regex.tregex.matchers.InvertibleCharMatcher

com.oracle.truffle.regex.tregex.matchers.RangeListMatcher

public final class RangeListMatcher
extends InvertibleCharMatcher

Character range matcher using a sorted list of ranges.

Field Summary

Fields

Modifier and Type	Field and Description
static int	MAX_NUMBER_OF_RANGES This matcher should be used only if the number of ranges is less or equal to this threshold.

Method Summary

Modifier and Type	Method and Description
static RangeListMatcher	create(boolean invert, int[] ranges)
int	estimatedCost() Conservatively estimate the equivalent number of integer comparisons of calling CharMatcher.match(int).
boolean	match(int c) Check if a given code point matches this CharMatcher.
String	toString()

Methods inherited from class com.oracle.truffle.regex.tregex.matchers.InvertibleCharMatcher

modifiersToString, result, result

Methods inherited from class java.lang.Object

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

Field Detail

MAX_NUMBER_OF_RANGES

public static final int MAX_NUMBER_OF_RANGES

This matcher should be used only if the number of ranges is less or equal to this threshold.

See Also:

Constant Field Values

Method Detail

create

public static RangeListMatcher create(boolean invert,
                                      int[] ranges)

match

public boolean match(int c)

Description copied from class: CharMatcher

Check if a given code point matches this CharMatcher.

Specified by:

match in class CharMatcher

Parameters:

c - any code point.

Returns:

true if the character matches.

See Also:

CompilerDirectives.isPartialEvaluationConstant(Object)

estimatedCost

public int estimatedCost()

Description copied from class: CharMatcher

Conservatively estimate the equivalent number of integer comparisons of calling CharMatcher.match(int).

Specified by:

estimatedCost in class CharMatcher

Returns:

the number of integer comparisons one call to CharMatcher.match(int) is roughly equivalent to. Array loads are treated as two comparisons.

toString

public String toString()

Overrides:

toString in class Object