com.github.javaparser.ast.expr

Class MethodReferenceExpr

java.lang.Object

com.github.javaparser.ast.Node

com.github.javaparser.ast.expr.Expression

com.github.javaparser.ast.expr.MethodReferenceExpr

All Implemented Interfaces:

NodeWithIdentifier<MethodReferenceExpr>, NodeWithTypeArguments<MethodReferenceExpr>, Observable, Visitable, HasParentNode<Node>, Cloneable

public class MethodReferenceExpr
extends Expression
implements NodeWithTypeArguments<MethodReferenceExpr>, NodeWithIdentifier<MethodReferenceExpr>

Method reference expressions introduced in Java 8 specifically designed to simplify lambda Expressions. Note that the field "identifier", indicating the word to the right of the ::, is not always a method name, it can be "new".
In System.out::println; the scope is System.out and the identifier is "println"
(test ? stream.map(String::trim) : stream)::toArray;
In Bar<String>::<Integer>new the String type argument is on the scope, and the Integer type argument is on this MethodReferenceExpr.

Author:

Raquel Pau

Nested Class Summary

Nested classes/interfaces inherited from class com.github.javaparser.ast.Node

Node.ObserverRegistrationMode

Field Summary

Fields inherited from class com.github.javaparser.ast.Node

ABSOLUTE_BEGIN_LINE, ABSOLUTE_END_LINE, NODE_BY_BEGIN_POSITION, prettyPrinterNoCommentsConfiguration

Constructor Summary

Constructors

Constructor and Description
MethodReferenceExpr()
MethodReferenceExpr(Range range, Expression scope, NodeList<Type> typeArguments, String identifier)

Method Summary

Modifier and Type	Method and Description
<R,A> R	accept(GenericVisitor<R,A> v, A arg) Accept method for visitor support.
<A> void	accept(VoidVisitor<A> v, A arg) Accept method for visitor support.
String	getIdentifier()
Expression	getScope()
Optional<NodeList<Type>>	getTypeArguments()
MethodReferenceExpr	setIdentifier(String identifier)
MethodReferenceExpr	setScope(Expression scope)
MethodReferenceExpr	setTypeArguments(NodeList<Type> typeArguments) Sets the typeArguments

Methods inherited from class com.github.javaparser.ast.Node

addOrphanComment, clone, containsWithin, equals, getAllContainedComments, getBegin, getChildNodes, getComment, getData, getEnd, getNodeLists, getNodesByType, getOrphanComments, getParentNode, getParentNodeForChildren, getRange, hasComment, hashCode, hasJavaDocComment, isPositionedAfter, isPositionedBefore, isRegistered, notifyPropertyChange, register, register, registerForSubtree, remove, removeOrphanComment, setAsParentNodeOf, setBlockComment, setComment, setData, setLineComment, setParentNode, setRange, toString, toString, tryAddImportToParentCompilationUnit, unregister

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.github.javaparser.ast.nodeTypes.NodeWithTypeArguments

isUsingDiamondOperator, removeTypeArguments, setDiamondOperator, setTypeArguments

Methods inherited from interface com.github.javaparser.ast.nodeTypes.NodeWithIdentifier

getId, setId

Methods inherited from interface com.github.javaparser.HasParentNode

getAncestorOfType, setAsParentNodeOf, setAsParentNodeOf

Constructor Detail

MethodReferenceExpr

public MethodReferenceExpr()

MethodReferenceExpr

public MethodReferenceExpr(Range range,
                           Expression scope,
                           NodeList<Type> typeArguments,
                           String identifier)

Method Detail

accept

public <R,A> R accept(GenericVisitor<R,A> v,
                      A arg)

Description copied from interface: Visitable

Accept method for visitor support.

Specified by:

accept in interface Visitable

Type Parameters:

R - the type of the return value of the visitor

A - the type the user argument passed to the visitor

Parameters:

v - the visitor implementation

arg - the argument passed to the visitor (of type A)

Returns:

the result of the visit (of type R)

accept

public <A> void accept(VoidVisitor<A> v,
                       A arg)

Description copied from interface: Visitable

Accept method for visitor support.

Specified by:

accept in interface Visitable

Type Parameters:

A - the type the argument passed for the visitor

Parameters:

v - the visitor implementation

arg - any value relevant for the visitor (of type A)

getScope

public Expression getScope()

setScope

public MethodReferenceExpr setScope(Expression scope)

getTypeArguments

public Optional<NodeList<Type>> getTypeArguments()

Specified by:

getTypeArguments in interface NodeWithTypeArguments<MethodReferenceExpr>

Returns:

the types that can be found in the type arguments: <String, Integer>.

setTypeArguments

public MethodReferenceExpr setTypeArguments(NodeList<Type> typeArguments)

Sets the typeArguments

Specified by:

setTypeArguments in interface NodeWithTypeArguments<MethodReferenceExpr>

Parameters:

typeArguments - the typeArguments, can be null

Returns:

this, the MethodReferenceExpr

getIdentifier

public String getIdentifier()

Specified by:

getIdentifier in interface NodeWithIdentifier<MethodReferenceExpr>

setIdentifier

public MethodReferenceExpr setIdentifier(String identifier)

Specified by:

setIdentifier in interface NodeWithIdentifier<MethodReferenceExpr>