com.oracle.truffle.regex.tregex.matchers

Class CharMatcher

java.lang.Object

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

Direct Known Subclasses:

AnyMatcher, EmptyMatcher, InvertibleCharMatcher

public abstract class CharMatcher
extends Object

Constructor Summary

Constructors

Constructor and Description
CharMatcher()

Method Summary

Modifier and Type	Method and Description
abstract int	estimatedCost() Conservatively estimate the equivalent number of integer comparisons of calling CharMatcher.match(int).
abstract boolean	match(int c) Check if a given code point matches this CharMatcher.

Methods inherited from class java.lang.Object

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

Constructor Detail

CharMatcher

public CharMatcher()

Method Detail

match

public abstract boolean match(int c)

Check if a given code point matches this CharMatcher.

Parameters:

c - any code point.

Returns:

true if the character matches.

See Also:

CompilerDirectives.isPartialEvaluationConstant(Object)

estimatedCost

public abstract int estimatedCost()

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

Returns:

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