Package com.github.javaparser

Interface HasParentNode<T>

All Superinterfaces:

Observable

All Known Implementing Classes:

AnnotationDeclaration, AnnotationExpr, AnnotationMemberDeclaration, ArrayAccessExpr, ArrayCreationExpr, ArrayCreationLevel, ArrayInitializerExpr, ArrayType, AssertStmt, AssignExpr, BinaryExpr, BlockComment, BlockStmt, BodyDeclaration, BooleanLiteralExpr, BreakStmt, CallableDeclaration, CastExpr, CatchClause, CharLiteralExpr, ClassExpr, ClassOrInterfaceDeclaration, ClassOrInterfaceType, Comment, CompactConstructorDeclaration, CompilationUnit, ConditionalExpr, ConstructorDeclaration, ContinueStmt, DoStmt, DoubleLiteralExpr, EmptyStmt, EnclosedExpr, EnumConstantDeclaration, EnumDeclaration, ExplicitConstructorInvocationStmt, Expression, ExpressionStmt, FieldAccessExpr, FieldDeclaration, ForEachStmt, ForStmt, IfStmt, ImportDeclaration, InitializerDeclaration, InstanceOfExpr, IntegerLiteralExpr, IntersectionType, JavadocComment, LabeledStmt, LambdaExpr, LineComment, LiteralExpr, LiteralStringValueExpr, LocalClassDeclarationStmt, LocalRecordDeclarationStmt, LongLiteralExpr, MarkerAnnotationExpr, MemberValuePair, MethodCallExpr, MethodDeclaration, MethodReferenceExpr, Modifier, ModuleDeclaration, ModuleDirective, ModuleExportsDirective, ModuleOpensDirective, ModuleProvidesDirective, ModuleRequiresDirective, ModuleUsesDirective, Name, NameExpr, Node, NodeList, NormalAnnotationExpr, NullLiteralExpr, ObjectCreationExpr, PackageDeclaration, Parameter, PatternExpr, PrimitiveType, ReceiverParameter, RecordDeclaration, RecordPatternExpr, ReferenceType, ReturnStmt, SimpleName, SingleMemberAnnotationExpr, Statement, StringLiteralExpr, SuperExpr, SwitchEntry, SwitchExpr, SwitchStmt, SynchronizedStmt, TextBlockLiteralExpr, ThisExpr, ThrowStmt, TryStmt, Type, TypeDeclaration, TypeExpr, TypeParameter, TypePatternExpr, UnaryExpr, UnionType, UnknownType, UnparsableStmt, VariableDeclarationExpr, VariableDeclarator, VarType, VoidType, WhileStmt, WildcardType, YieldStmt

public interface HasParentNode<T>
extends Observable

An object that can have a parent node.

Method Summary

Modifier and Type	Method	Description
default <N> Optional<N>	findAncestor(Class<N>... types)	Walks the parents of this node and returns the first node of type type, or empty() if none is found.
default <N> Optional<N>	findAncestor(Class<N> type, Predicate<N> predicate)	Deprecated. This method is no longer acceptable to find ancestor.
default <N> Optional<N>	findAncestor(Predicate<N> predicate, Class<N>... types)	Walks the parents of this node and returns the first node that matches one of types types, or empty() if none is found.
Optional<Node>	getParentNode()	Returns the parent node, or Optional.empty if no parent is set.
Node	getParentNodeForChildren()	Returns the parent node from the perspective of the children of this node.
default boolean	hasParentNode()	Returns true if the parent has a parent
default boolean	isDescendantOf(Node ancestor)	Determines whether this HasParentNode node is a descendant of the given node.
T	setParentNode(Node parentNode)	Sets the parent node.

Methods inherited from interface com.github.javaparser.ast.observer.Observable

isRegistered, register, unregister

Method Detail

hasParentNode

default boolean hasParentNode()

Returns true if the parent has a parent

getParentNode

Optional<Node> getParentNode()

Returns the parent node, or Optional.empty if no parent is set.

setParentNode

T setParentNode(Node parentNode)

Sets the parent node.

Parameters:

parentNode - the parent node, or null to set no parent.

Returns:

this

getParentNodeForChildren

Node getParentNodeForChildren()

Returns the parent node from the perspective of the children of this node.

That is, this method returns this for everything except NodeList. A NodeList returns its parent node instead. This is because a NodeList sets the parent of all its children to its own parent node (see NodeList for details).

findAncestor

default <N> Optional<N> findAncestor(Class<N>... types)

Walks the parents of this node and returns the first node of type type, or empty() if none is found. The given type may also be an interface type, such as one of the NodeWith... interface types.

findAncestor

@Deprecated
default <N> Optional<N> findAncestor(Class<N> type,
                                     Predicate<N> predicate)

Deprecated.

This method is no longer acceptable to find ancestor.

Use findAncestor(Predicate, Class) instead.

Walks the parents of this node and returns the first node of type type that matches predicate, or empty() if none is found. The given type may also be an interface type, such as one of the NodeWith... interface types.

findAncestor

default <N> Optional<N> findAncestor(Predicate<N> predicate,
                                     Class<N>... types)

Walks the parents of this node and returns the first node that matches one of types types, or empty() if none is found. The given type may also be an interface type, such as one of the NodeWith... interface types.

Type Parameters:

N -

isDescendantOf

default boolean isDescendantOf(Node ancestor)

Determines whether this HasParentNode node is a descendant of the given node. A node is not a descendant of itself.

Parameters:

ancestor - the node for which to determine whether it has this node as an ancestor.

Returns:

true if this node is a descendant of the given node, and false otherwise.

See Also:

Node.isAncestorOf(Node)