com.oracle.truffle.regex.tregex.matchers

Class NullHighByteBitSetMatcher

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.NullHighByteBitSetMatcher

All Implemented Interfaces:

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

public abstract class NullHighByteBitSetMatcher
extends InvertibleCharMatcher

Specialized BitSetMatcher that exists simply because ascii bit set matchers occur often and we can save one comparison when the high byte is 0x00.

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
static NullHighByteBitSetMatcher	create(boolean inverse, CompilationFinalBitSet bitSet)
int	estimatedCost() Conservatively estimate the equivalent number of integer comparisons of calling CharMatcher.execute(char, boolean).
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

create

public static NullHighByteBitSetMatcher create(boolean inverse,
                                               CompilationFinalBitSet bitSet)

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