com.oracle.truffle.regex.tregex.matchers

Class MultiBitSetMatcher

java.lang.Object

com.oracle.truffle.api.nodes.Node

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

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

com.oracle.truffle.regex.tregex.matchers.MultiBitSetMatcher

All Implemented Interfaces:

com.oracle.truffle.api.nodes.NodeInterface, Cloneable

public abstract class MultiBitSetMatcher
extends InvertibleCharMatcher

Character matcher that uses an array of 256 bit sets to fully cover the 16 bit character space. This matcher can take up to 8 kilobytes of space, so it should be used only when the set of characters to match is very large and sparse.

Nested Class Summary

Nested classes/interfaces inherited from class com.oracle.truffle.api.nodes.Node

com.oracle.truffle.api.nodes.Node.Child, com.oracle.truffle.api.nodes.Node.Children

Field Summary

Fields inherited from class com.oracle.truffle.regex.tregex.matchers.CharMatcher

EMPTY

Method Summary

Modifier and Type	Method and Description
int	estimatedCost() Conservatively estimate the equivalent number of integer comparisons of calling CharMatcher.execute(char, boolean).
static MultiBitSetMatcher	fromCodePointSet(boolean inverse, CodePointSet cps)
protected boolean	match(char c, boolean compactString)
String	toString()

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

modifiersToString, result

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

execute

Methods inherited from class com.oracle.truffle.api.nodes.Node

accept, adoptChildren, atomic, atomic, copy, deepCopy, getChildren, getCost, getDebugProperties, getDescription, getEncapsulatingSourceSection, getLock, getParent, getRootNode, getSourceSection, insert, insert, isAdoptable, isSafelyReplaceableBy, lookupContextReference, lookupLanguageReference, notifyInserted, onReplace, replace, replace, reportPolymorphicSpecialize

Methods inherited from class java.lang.Object

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

Method Detail

fromCodePointSet

public static MultiBitSetMatcher fromCodePointSet(boolean inverse,
                                                  CodePointSet cps)

match

protected boolean match(char c,
                        boolean compactString)

estimatedCost

public int estimatedCost()

Description copied from class: CharMatcher

Conservatively estimate the equivalent number of integer comparisons of calling CharMatcher.execute(char, boolean).

Specified by:

estimatedCost in class CharMatcher

Returns:

the number of integer comparisons one call to CharMatcher.execute(char, boolean) is roughly equivalent to. Array loads are treated as two comparisons.

toString

public String toString()

Overrides:

toString in class com.oracle.truffle.api.nodes.Node