com.oracle.truffle.regex.tregex.parser.ast

Class RegexASTSubtreeRootNode

java.lang.Object

com.oracle.truffle.regex.tregex.parser.ast.RegexASTNode

com.oracle.truffle.regex.tregex.parser.ast.Term

com.oracle.truffle.regex.tregex.parser.ast.RegexASTSubtreeRootNode

All Implemented Interfaces:

AbstractState<Term,ASTTransition>, RegexASTVisitorIterable, JsonConvertible

Direct Known Subclasses:

LookAroundAssertion, RegexASTRootNode

public abstract class RegexASTSubtreeRootNode
extends Term
implements RegexASTVisitorIterable

A common supertype to the root node and look-ahead and look-behind assertions. Every AST subtree contains a Group which contains the syntactic subtree, as well as a MatchFound node, which is needed for NFA-like traversal of the AST, see NFATraversalRegexASTVisitor.

Method Summary

Modifier and Type	Method and Description
abstract RegexASTSubtreeRootNode	copy(RegexAST ast, boolean recursive) Copy this node, in one of the following ways: if recursive is true, recursively copy this subtree.
Term	getAnchoredFinalState()
Term	getAnchoredInitialState()
Group	getGroup() Returns the Group that represents the contents of this subtree.
MatchFound	getMatchFound() Returns this subtree's corresponding MatchFound node.
abstract String	getPrefix()
int	getSubTreeId()
Term	getUnAnchoredInitialState()
void	resetVisitorIterator()
void	setAnchoredFinalState(PositionAssertion anchoredFinalState)
void	setAnchoredInitialState(PositionAssertion anchoredInitialState)
void	setGroup(Group group) Sets the contents of this subtree.
void	setMatchFound(MatchFound matchFound)
void	setSubTreeId(int subTreeId)
void	setUnAnchoredInitialState(MatchFound unAnchoredInitialState)
boolean	subTreeIdInitialized()
protected JsonObject	toJson(String typeName)
String	toString()
RegexASTNode	visitorGetNext(boolean reverse)
boolean	visitorHasNext()

Methods inherited from class com.oracle.truffle.regex.tregex.parser.ast.Term

getSeqIndex, getSubTreeParent, setSeqIndex

Methods inherited from class com.oracle.truffle.regex.tregex.parser.ast.RegexASTNode

asBackReference, asCharacterClass, asGroup, asLookAheadAssertion, asLookAroundAssertion, asLookBehindAssertion, asMatchFound, asPositionAssertion, asQuantifiableTerm, asSequence, astNodeId, endsWithDollar, equalsSemantic, getFlags, getId, getMaxPath, getMinPath, getParent, hasBackReferences, hasCaptureGroups, hasCaret, hasDollar, hasEmptyGuard, hasLookAheads, hasLookBehinds, hasLoops, hasQuantifiers, idInitialized, incMaxPath, incMaxPath, incMinPath, incMinPath, isBackReference, isCaret, isCharacterClass, isDead, isDollar, isExpandedQuantifier, isFlagSet, isGroup, isInLookAheadAssertion, isInLookBehindAssertion, isLookAheadAssertion, isLookAroundAssertion, isLookBehindAssertion, isMatchFound, isPositionAssertion, isPrefix, isQuantifiableTerm, isRoot, isSequence, isSubtreeRoot, markAsDead, setDead, setEmptyGuard, setEndsWithDollar, setEndsWithDollar, setExpandedQuantifier, setFlag, setFlag, setFlags, setHasBackReferences, setHasCaptureGroups, setHasCaret, setHasCaret, setHasDollar, setHasDollar, setHasLookAheads, setHasLookBehinds, setHasLoops, setHasLoops, setHasQuantifiers, setId, setMaxPath, setMinPath, setParent, setPrefix, setStartsWithCaret, setStartsWithCaret, startsWithCaret, toStringWithID

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.oracle.truffle.regex.tregex.automaton.AbstractState

getId

Methods inherited from interface com.oracle.truffle.regex.tregex.util.json.JsonConvertible

toJson

Method Detail

subTreeIdInitialized

public boolean subTreeIdInitialized()

getSubTreeId

public int getSubTreeId()

setSubTreeId

public void setSubTreeId(int subTreeId)

copy

public abstract RegexASTSubtreeRootNode copy(RegexAST ast,
                                             boolean recursive)

Description copied from class: RegexASTNode

Copy this node, in one of the following ways:

• if recursive is true, recursively copy this subtree. This method should be used instead of CopyVisitor if the copying process is required to be thread-safe.
• else, copy this node only, without any child nodes.

In both cases, the ID and minPath of the copied nodes is left unset.

Specified by:

copy in class Term

Parameters:

ast - RegexAST the new nodes should belong to.

Returns:

A shallow or deep copy of this node.

getGroup

public Group getGroup()

Returns the Group that represents the contents of this subtree.

setGroup

public void setGroup(Group group)

Sets the contents of this subtree.

This method should be called after creating any instance of this class. Otherwise, methods of this class could throw NullPointerExceptions or return nulls.

getMatchFound

public MatchFound getMatchFound()

Returns this subtree's corresponding MatchFound node.

setMatchFound

public void setMatchFound(MatchFound matchFound)

getAnchoredInitialState

public Term getAnchoredInitialState()

setAnchoredInitialState

public void setAnchoredInitialState(PositionAssertion anchoredInitialState)

getUnAnchoredInitialState

public Term getUnAnchoredInitialState()

setUnAnchoredInitialState

public void setUnAnchoredInitialState(MatchFound unAnchoredInitialState)

getAnchoredFinalState

public Term getAnchoredFinalState()

setAnchoredFinalState

public void setAnchoredFinalState(PositionAssertion anchoredFinalState)

visitorHasNext

public boolean visitorHasNext()

Specified by:

visitorHasNext in interface RegexASTVisitorIterable

visitorGetNext

public RegexASTNode visitorGetNext(boolean reverse)

Specified by:

visitorGetNext in interface RegexASTVisitorIterable

resetVisitorIterator

public void resetVisitorIterator()

Specified by:

resetVisitorIterator in interface RegexASTVisitorIterable

getPrefix

public abstract String getPrefix()

toString

public String toString()

Overrides:

toString in class Object

toJson

protected JsonObject toJson(String typeName)

Overrides:

toJson in class RegexASTNode