Package com.github.javaparser.ast.expr
Class MethodReferenceExpr
- java.lang.Object
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- com.github.javaparser.ast.Node
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- com.github.javaparser.ast.expr.Expression
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- com.github.javaparser.ast.expr.MethodReferenceExpr
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- All Implemented Interfaces:
NodeWithIdentifier<MethodReferenceExpr>
,NodeWithRange<Node>
,NodeWithTokenRange<Node>
,NodeWithTypeArguments<MethodReferenceExpr>
,Observable
,Visitable
,HasParentNode<Node>
,Resolvable<ResolvedMethodDeclaration>
,java.lang.Cloneable
public class MethodReferenceExpr extends Expression implements NodeWithTypeArguments<MethodReferenceExpr>, NodeWithIdentifier<MethodReferenceExpr>, Resolvable<ResolvedMethodDeclaration>
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".
InSystem.out::println;
the scope is System.out and the identifier is "println"(test ? stream.map(String::trim) : stream)::toArray;
InBar<String>::<Integer>new
the String type argument is on the scope, and the Integer type argument is on this MethodReferenceExpr.
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Nested Class Summary
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Nested classes/interfaces inherited from class com.github.javaparser.ast.Node
Node.BreadthFirstIterator, Node.DirectChildrenIterator, Node.ObserverRegistrationMode, Node.ParentsVisitor, Node.Parsedness, Node.PostOrderIterator, Node.PreOrderIterator, Node.TreeTraversal
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Field Summary
Fields Modifier and Type Field Description private java.lang.String
identifier
private Expression
scope
private NodeList<Type>
typeArguments
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Fields inherited from class com.github.javaparser.ast.expr.Expression
EXCLUDE_ENCLOSED_EXPR, IS_NOT_ENCLOSED_EXPR
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Fields inherited from class com.github.javaparser.ast.Node
ABSOLUTE_BEGIN_LINE, ABSOLUTE_END_LINE, LINE_SEPARATOR_KEY, NODE_BY_BEGIN_POSITION, PHANTOM_KEY, prettyPrinterNoCommentsConfiguration, PRINTER_KEY, SYMBOL_RESOLVER_KEY
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Constructor Summary
Constructors Constructor Description MethodReferenceExpr()
MethodReferenceExpr(Expression scope, NodeList<Type> typeArguments, java.lang.String identifier)
MethodReferenceExpr(TokenRange tokenRange, Expression scope, NodeList<Type> typeArguments, java.lang.String identifier)
This constructor is used by the parser and is considered private.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description <R,A>
Raccept(GenericVisitor<R,A> v, A arg)
Accept method for visitor support.<A> void
accept(VoidVisitor<A> v, A arg)
Accept method for visitor support.MethodReferenceExpr
asMethodReferenceExpr()
MethodReferenceExpr
clone()
java.lang.String
getIdentifier()
MethodReferenceExprMetaModel
getMetaModel()
Expression
getScope()
java.util.Optional<NodeList<Type>>
getTypeArguments()
void
ifMethodReferenceExpr(java.util.function.Consumer<MethodReferenceExpr> action)
boolean
isMethodReferenceExpr()
boolean
isPolyExpression()
See https://docs.oracle.com/javase/specs/jls/se8/html/jls-15.html#jls-15.2boolean
remove(Node node)
boolean
replace(Node node, Node replacementNode)
ResolvedMethodDeclaration
resolve()
MethodReferenceExpr
setIdentifier(java.lang.String identifier)
MethodReferenceExpr
setScope(Expression scope)
MethodReferenceExpr
setTypeArguments(NodeList<Type> typeArguments)
Sets the typeArgumentsjava.util.Optional<MethodReferenceExpr>
toMethodReferenceExpr()
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Methods inherited from class com.github.javaparser.ast.expr.Expression
appearsInAssignmentContext, appearsInInvocationContext, asAnnotationExpr, asArrayAccessExpr, asArrayCreationExpr, asArrayInitializerExpr, asAssignExpr, asBinaryExpr, asBooleanLiteralExpr, asCastExpr, asCharLiteralExpr, asClassExpr, asConditionalExpr, asDoubleLiteralExpr, asEnclosedExpr, asFieldAccessExpr, asInstanceOfExpr, asIntegerLiteralExpr, asLambdaExpr, asLiteralExpr, asLiteralStringValueExpr, asLongLiteralExpr, asMarkerAnnotationExpr, asMethodCallExpr, asNameExpr, asNormalAnnotationExpr, asNullLiteralExpr, asObjectCreationExpr, asPatternExpr, asSingleMemberAnnotationExpr, asStringLiteralExpr, asSuperExpr, asSwitchExpr, asTextBlockLiteralExpr, asThisExpr, asTypeExpr, asUnaryExpr, asVariableDeclarationExpr, calculateResolvedType, elidesTypeArguments, ifAnnotationExpr, ifArrayAccessExpr, ifArrayCreationExpr, ifArrayInitializerExpr, ifAssignExpr, ifBinaryExpr, ifBooleanLiteralExpr, ifCastExpr, ifCharLiteralExpr, ifClassExpr, ifConditionalExpr, ifDoubleLiteralExpr, ifEnclosedExpr, ifFieldAccessExpr, ifInstanceOfExpr, ifIntegerLiteralExpr, ifLambdaExpr, ifLiteralExpr, ifLiteralStringValueExpr, ifLongLiteralExpr, ifMarkerAnnotationExpr, ifMethodCallExpr, ifNameExpr, ifNormalAnnotationExpr, ifNullLiteralExpr, ifObjectCreationExpr, ifPatternExpr, ifSingleMemberAnnotationExpr, ifStringLiteralExpr, ifSuperExpr, ifSwitchExpr, ifTextBlockLiteralExpr, ifThisExpr, ifTypeExpr, ifUnaryExpr, ifVariableDeclarationExpr, isAnnotationExpr, isArrayAccessExpr, isArrayCreationExpr, isArrayInitializerExpr, isAssignExpr, isAssignmentContext, isBinaryExpr, isBooleanLiteralExpr, isCastExpr, isCharLiteralExpr, isClassExpr, isConditionalExpr, isDoubleLiteralExpr, isEnclosedExpr, isFieldAccessExpr, isInstanceOfExpr, isIntegerLiteralExpr, isInvocationContext, isLambdaExpr, isLiteralExpr, isLiteralStringValueExpr, isLongLiteralExpr, isMarkerAnnotationExpr, isMethodCallExpr, isNameExpr, isNormalAnnotationExpr, isNullLiteralExpr, isObjectCreationExpr, isPatternExpr, isQualified, isSingleMemberAnnotationExpr, isStandaloneExpression, isStringLiteralExpr, isSuperExpr, isSwitchExpr, isTextBlockLiteralExpr, isThisExpr, isTypeExpr, isUnaryExpr, isVariableDeclarationExpr, toAnnotationExpr, toArrayAccessExpr, toArrayCreationExpr, toArrayInitializerExpr, toAssignExpr, toBinaryExpr, toBooleanLiteralExpr, toCastExpr, toCharLiteralExpr, toClassExpr, toConditionalExpr, toDoubleLiteralExpr, toEnclosedExpr, toFieldAccessExpr, toInstanceOfExpr, toIntegerLiteralExpr, toLambdaExpr, toLiteralExpr, toLiteralStringValueExpr, toLongLiteralExpr, toMarkerAnnotationExpr, toMethodCallExpr, toNameExpr, toNormalAnnotationExpr, toNullLiteralExpr, toObjectCreationExpr, toPatternExpr, toSingleMemberAnnotationExpr, toStringLiteralExpr, toSuperExpr, toSwitchExpr, toTextBlockLiteralExpr, toThisExpr, toTypeExpr, toUnaryExpr, toVariableDeclarationExpr
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Methods inherited from class com.github.javaparser.ast.Node
addOrphanComment, containsData, createDefaultPrinter, createDefaultPrinter, customInitialization, equals, findAll, findAll, findAll, findCompilationUnit, findFirst, findFirst, findFirst, findRootNode, getAllContainedComments, getChildNodes, getChildNodesByType, getComment, getData, getDataKeys, getDefaultPrinterConfiguration, getLineEndingStyle, getLineEndingStyleOrDefault, getNodesByType, getOrphanComments, getParentNode, getParentNodeForChildren, getParsed, getPrinter, getPrinter, getRange, getSymbolResolver, getTokenRange, hashCode, hasScope, isAncestorOf, isPhantom, isRegistered, notifyPropertyChange, register, register, registerForSubtree, remove, removeComment, removeData, removeForced, removeOrphanComment, replace, setAsParentNodeOf, setAsParentNodeOf, setBlockComment, setComment, setData, setLineComment, setParentNode, setParsed, setRange, setTokenRange, stream, stream, toString, toString, tryAddImportToParentCompilationUnit, unregister, walk, walk, walk
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Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, wait, wait, wait
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Methods inherited from interface com.github.javaparser.HasParentNode
findAncestor, findAncestor, findAncestor, hasParentNode, isDescendantOf
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Methods inherited from interface com.github.javaparser.ast.nodeTypes.NodeWithIdentifier
getId, setId
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Methods inherited from interface com.github.javaparser.ast.nodeTypes.NodeWithRange
containsWithin, containsWithinRange, getBegin, getEnd, hasRange
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Methods inherited from interface com.github.javaparser.ast.nodeTypes.NodeWithTypeArguments
isUsingDiamondOperator, removeTypeArguments, setDiamondOperator, setTypeArguments
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Field Detail
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scope
private Expression scope
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identifier
private java.lang.String identifier
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Constructor Detail
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MethodReferenceExpr
public MethodReferenceExpr()
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MethodReferenceExpr
public MethodReferenceExpr(Expression scope, NodeList<Type> typeArguments, java.lang.String identifier)
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MethodReferenceExpr
public MethodReferenceExpr(TokenRange tokenRange, Expression scope, NodeList<Type> typeArguments, java.lang.String identifier)
This constructor is used by the parser and is considered private.
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Method Detail
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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 interfaceVisitable
- Type Parameters:
R
- the type of the return value of the visitorA
- the type the user argument passed to the visitor- Parameters:
v
- the visitor implementationarg
- the argument passed to the visitor (of type A)- Returns:
- the result of the visit (of type R)
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accept
public <A> void accept(VoidVisitor<A> v, A arg)
Description copied from interface:Visitable
Accept method for visitor support.
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getScope
public Expression getScope()
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setScope
public MethodReferenceExpr setScope(Expression scope)
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getTypeArguments
public java.util.Optional<NodeList<Type>> getTypeArguments()
- Specified by:
getTypeArguments
in interfaceNodeWithTypeArguments<MethodReferenceExpr>
- Returns:
- the types that can be found in the type arguments:
<String, Integer>
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setTypeArguments
public MethodReferenceExpr setTypeArguments(NodeList<Type> typeArguments)
Sets the typeArguments- Specified by:
setTypeArguments
in interfaceNodeWithTypeArguments<MethodReferenceExpr>
- Parameters:
typeArguments
- the typeArguments, can be null- Returns:
- this, the MethodReferenceExpr
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getIdentifier
public java.lang.String getIdentifier()
- Specified by:
getIdentifier
in interfaceNodeWithIdentifier<MethodReferenceExpr>
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setIdentifier
public MethodReferenceExpr setIdentifier(java.lang.String identifier)
- Specified by:
setIdentifier
in interfaceNodeWithIdentifier<MethodReferenceExpr>
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clone
public MethodReferenceExpr clone()
- Overrides:
clone
in classExpression
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getMetaModel
public MethodReferenceExprMetaModel getMetaModel()
- Overrides:
getMetaModel
in classExpression
- Returns:
- get JavaParser specific node introspection information.
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isMethodReferenceExpr
public boolean isMethodReferenceExpr()
- Overrides:
isMethodReferenceExpr
in classExpression
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asMethodReferenceExpr
public MethodReferenceExpr asMethodReferenceExpr()
- Overrides:
asMethodReferenceExpr
in classExpression
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ifMethodReferenceExpr
public void ifMethodReferenceExpr(java.util.function.Consumer<MethodReferenceExpr> action)
- Overrides:
ifMethodReferenceExpr
in classExpression
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toMethodReferenceExpr
public java.util.Optional<MethodReferenceExpr> toMethodReferenceExpr()
- Overrides:
toMethodReferenceExpr
in classExpression
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resolve
public ResolvedMethodDeclaration resolve()
- Specified by:
resolve
in interfaceResolvable<ResolvedMethodDeclaration>
- Returns:
- the method declaration this method reference is referencing.
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isPolyExpression
public boolean isPolyExpression()
Description copied from class:Expression
See https://docs.oracle.com/javase/specs/jls/se8/html/jls-15.html#jls-15.2- Overrides:
isPolyExpression
in classExpression
- Returns:
- true if the expression is a poly expression
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