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

Class Term

java.lang.Object

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

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

All Implemented Interfaces:

AbstractState<Term,ASTTransition>, JsonConvertible

Direct Known Subclasses:

MatchFound, PositionAssertion, QuantifiableTerm, RegexASTSubtreeRootNode

public abstract class Term
extends RegexASTNode
implements AbstractState<Term,ASTTransition>

A common supertype for all RegexASTNodes except Sequences.

Roughly corresponds to the goal symbol Term in the ECMAScript RegExp syntax. A Term (Term) can be either an Assertion (PositionAssertion or LookAroundAssertion) or an Atom (QuantifiableTerm.

Method Summary

Modifier and Type	Method and Description
abstract Term	copy(RegexAST ast, boolean recursive) Copy this node, in one of the following ways: if recursive is true, recursively copy this subtree.
int	getSeqIndex()
RegexASTSubtreeRootNode	getSubTreeParent() Returns the subtree root node that this node is a part of.
void	setSeqIndex(int seqIndex)

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, toJson, toStringWithID

Methods inherited from class java.lang.Object

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

copy

public abstract Term 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 RegexASTNode

Parameters:

ast - RegexAST the new nodes should belong to.

Returns:

A shallow or deep copy of this node.

getSeqIndex

public int getSeqIndex()

setSeqIndex

public void setSeqIndex(int seqIndex)

getSubTreeParent

public RegexASTSubtreeRootNode getSubTreeParent()

Description copied from class: RegexASTNode

Returns the subtree root node that this node is a part of. If this node is nested inside several look-around assertion nodes, returns the innermost one that contains this node. Every AST node should have a subtree parent, but nodes implicitly generated by RegexAST.getNFAAnchoredInitialState(int) and RegexAST.getNFAUnAnchoredInitialState(int) technically don't belong to the AST, so they will return null.

Specified by:

getSubTreeParent in class RegexASTNode