com.oracle.truffle.regex.tregex.nodes.nfa

Class TRegexNFAExecutorNode

java.lang.Object

com.oracle.truffle.api.nodes.Node

com.oracle.truffle.regex.tregex.nodes.TRegexExecutorNode

com.oracle.truffle.regex.tregex.nodes.nfa.TRegexNFAExecutorNode

All Implemented Interfaces:

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

public class TRegexNFAExecutorNode
extends TRegexExecutorNode

This regex executor matches a given expression by calculating DFA states from the NFA on the fly, without any caching. It is used as a placeholder for TRegexDFAExecutorNode until the expression is executed TRegexOptions.TRegexGenerateDFAThreshold times, in order to avoid the costly DFA generation on all expressions that are not on any hot code paths.

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.nodes.TRegexExecutorNode

root

Constructor Summary

Constructors

Constructor and Description
TRegexNFAExecutorNode(NFA nfa)

Method Summary

Modifier and Type	Method and Description
TRegexExecutorLocals	createLocals(Object input, int fromIndex, int index, int maxIndex)
Object	execute(TRegexExecutorLocals abstractLocals, boolean compactString)
NFA	getNFA()
boolean	writesCaptureGroups() Returns true if this executor may write any new capture group boundaries.

Methods inherited from class com.oracle.truffle.regex.tregex.nodes.TRegexExecutorNode

getChar, getCharAt, getInputLength, getNumberOfCaptureGroups, setRoot

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, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

TRegexNFAExecutorNode

public TRegexNFAExecutorNode(NFA nfa)

Method Detail

getNFA

public NFA getNFA()

writesCaptureGroups

public boolean writesCaptureGroups()

Description copied from class: TRegexExecutorNode

Returns true if this executor may write any new capture group boundaries.

Specified by:

writesCaptureGroups in class TRegexExecutorNode

createLocals

public TRegexExecutorLocals createLocals(Object input,
                                         int fromIndex,
                                         int index,
                                         int maxIndex)

Specified by:

createLocals in class TRegexExecutorNode

execute

public Object execute(TRegexExecutorLocals abstractLocals,
                      boolean compactString)

Specified by:

execute in class TRegexExecutorNode