com.oracle.truffle.regex.tregex.nfa

Class PureNFAMap

java.lang.Object

com.oracle.truffle.regex.tregex.nfa.PureNFAMap

public final class PureNFAMap
extends Object

Contains a full mapping of every RegexASTSubtreeRootNode in a RegexAST to a PureNFA.

Constructor Summary

Constructors

Constructor and Description
PureNFAMap(RegexAST ast, PureNFA root, PureNFAIndex lookArounds)

Method Summary

Modifier and Type	Method and Description
void	addPrefixLookBehindEntry(PureNFA lookBehind, int offset) Mark a potential look-behind entry starting offset characters before the root expression.
RegexAST	getAst()
RegexASTSubtreeRootNode	getASTSubtree(PureNFA nfa)
PureNFAIndex	getLookArounds()
CodePointSet	getMergedInitialStateCharSet(CompilationBuffer compilationBuffer) Creates a CodePointSet that matches the union of all code point sets of character class successor states of the root NFA's unanchored initial state.
int	getPrefixLength()
PureNFA	getRoot()
JsonValue	toJson()

Methods inherited from class java.lang.Object

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

Constructor Detail

PureNFAMap

public PureNFAMap(RegexAST ast,
                  PureNFA root,
                  PureNFAIndex lookArounds)

Method Detail

getAst

public RegexAST getAst()

getRoot

public PureNFA getRoot()

getLookArounds

public PureNFAIndex getLookArounds()

getPrefixLength

public int getPrefixLength()

getASTSubtree

public RegexASTSubtreeRootNode getASTSubtree(PureNFA nfa)

getMergedInitialStateCharSet

public CodePointSet getMergedInitialStateCharSet(CompilationBuffer compilationBuffer)

Creates a CodePointSet that matches the union of all code point sets of character class successor states of the root NFA's unanchored initial state. If this can not be calculated, e.g. because one of the successors is an empty match state, null is returned.

addPrefixLookBehindEntry

public void addPrefixLookBehindEntry(PureNFA lookBehind,
                                     int offset)

Mark a potential look-behind entry starting offset characters before the root expression.

toJson

public JsonValue toJson()