Package com.github.javaparser.ast.expr
Class RecordPatternExpr
java.lang.Object
com.github.javaparser.ast.Node
com.github.javaparser.ast.expr.Expression
com.github.javaparser.ast.expr.PatternExpr
com.github.javaparser.ast.expr.RecordPatternExpr
- All Implemented Interfaces:
NodeWithFinalModifier<RecordPatternExpr>
,NodeWithModifiers<RecordPatternExpr>
,NodeWithRange<Node>
,NodeWithTokenRange<Node>
,NodeWithType<PatternExpr,
,Type> Observable
,Visitable
,HasParentNode<Node>
,Cloneable
public class RecordPatternExpr
extends PatternExpr
implements NodeWithFinalModifier<RecordPatternExpr>
Record Patterns
Record patterns were officially added in Java 21 to allow the deconstruction of record values and provide convenient access to inner fields through pattern matching.JDK 21 Grammar
Pattern
TypePattern
RecordPattern
RecordPattern:
ReferenceType ( [PatternList] )
PatternList
Pattern {, Pattern }
Example
Example taken from JEP440: RecordPatterns
record Pair(Object x, Object y) {}
Pair p = new Pair(42, 42);
if (p instanceof Pair(String s, String t)) {
System.out.println(s + ", " + t);
} else {
System.out.println("Not a pair of strings");
}
- See Also:
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Nested Class Summary
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
FieldsFields inherited from class com.github.javaparser.ast.expr.Expression
EXCLUDE_ENCLOSED_EXPR, IS_NOT_ENCLOSED_EXPR
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
ConstructorsConstructorDescriptionRecordPatternExpr
(NodeList<Modifier> modifiers, Type type, NodeList<PatternExpr> patternList) RecordPatternExpr
(TokenRange tokenRange, NodeList<Modifier> modifiers, Type type, NodeList<PatternExpr> patternList) This constructor is used by the parser and is considered private. -
Method Summary
Modifier and TypeMethodDescription<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.clone()
Return the modifiers of this variable declaration.getType()
The type of RecordPatternExpr must always be a reference type.void
ifRecordPatternExpr
(Consumer<RecordPatternExpr> action) boolean
boolean
boolean
setModifiers
(NodeList<Modifier> modifiers) setPatternList
(NodeList<PatternExpr> patternList) Methods inherited from class com.github.javaparser.ast.expr.PatternExpr
asPatternExpr, ifPatternExpr, isPatternExpr, setType, toPatternExpr
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, asMethodReferenceExpr, asNameExpr, asNormalAnnotationExpr, asNullLiteralExpr, asObjectCreationExpr, asSingleMemberAnnotationExpr, asStringLiteralExpr, asSuperExpr, asSwitchExpr, asTextBlockLiteralExpr, asThisExpr, asTypeExpr, asTypePatternExpr, 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, ifMethodReferenceExpr, ifNameExpr, ifNormalAnnotationExpr, ifNullLiteralExpr, ifObjectCreationExpr, ifSingleMemberAnnotationExpr, ifStringLiteralExpr, ifSuperExpr, ifSwitchExpr, ifTextBlockLiteralExpr, ifThisExpr, ifTypeExpr, ifTypePatternExpr, 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, isMethodReferenceExpr, isNameExpr, isNormalAnnotationExpr, isNullLiteralExpr, isObjectCreationExpr, isPolyExpression, isQualified, isSingleMemberAnnotationExpr, isStandaloneExpression, isStringLiteralExpr, isSuperExpr, isSwitchExpr, isTextBlockLiteralExpr, isThisExpr, isTypeExpr, isTypePatternExpr, isUnaryExpr, isVariableDeclarationExpr, toAnnotationExpr, toArrayAccessExpr, toArrayCreationExpr, toArrayInitializerExpr, toAssignExpr, toBinaryExpr, toBooleanLiteralExpr, toCastExpr, toCharLiteralExpr, toClassExpr, toConditionalExpr, toDoubleLiteralExpr, toEnclosedExpr, toFieldAccessExpr, toInstanceOfExpr, toIntegerLiteralExpr, toLambdaExpr, toLiteralExpr, toLiteralStringValueExpr, toLongLiteralExpr, toMarkerAnnotationExpr, toMethodCallExpr, toMethodReferenceExpr, toNameExpr, toNormalAnnotationExpr, toNullLiteralExpr, toObjectCreationExpr, toSingleMemberAnnotationExpr, toStringLiteralExpr, toSuperExpr, toSwitchExpr, toTextBlockLiteralExpr, toThisExpr, toTypeExpr, toTypePatternExpr, toUnaryExpr, toVariableDeclarationExpr
Methods inherited from class com.github.javaparser.ast.Node
addOrphanComment, containsData, createDefaultPrinter, createDefaultPrinter, customInitialization, equals, findAll, findAll, findAll, findByRange, findCompilationUnit, findData, 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
Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, wait, wait, wait
Methods inherited from interface com.github.javaparser.HasParentNode
findAncestor, findAncestor, findAncestor, hasParentNode, isDescendantOf
Methods inherited from interface com.github.javaparser.ast.nodeTypes.modifiers.NodeWithFinalModifier
isFinal, setFinal
Methods inherited from interface com.github.javaparser.ast.nodeTypes.NodeWithModifiers
addModifier, getAccessSpecifier, hasModifier, removeModifier, setModifier, setModifiers
Methods inherited from interface com.github.javaparser.ast.nodeTypes.NodeWithRange
containsWithin, containsWithinRange, getBegin, getEnd, hasRange
Methods inherited from interface com.github.javaparser.ast.nodeTypes.NodeWithType
getTypeAsString, setType, setType, tryAddImportToParentCompilationUnit
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Field Details
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modifiers
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patternList
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Constructor Details
-
RecordPatternExpr
public RecordPatternExpr() -
RecordPatternExpr
public RecordPatternExpr(NodeList<Modifier> modifiers, Type type, NodeList<PatternExpr> patternList) -
RecordPatternExpr
public RecordPatternExpr(TokenRange tokenRange, NodeList<Modifier> modifiers, Type type, NodeList<PatternExpr> patternList) This constructor is used by the parser and is considered private.
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Method Details
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getType
The type of RecordPatternExpr must always be a reference type. Only nested TypePatternExprs may have primitive types.- Specified by:
getType
in interfaceNodeWithType<PatternExpr,
Type> - Overrides:
getType
in classPatternExpr
- Returns:
- the type
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accept
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
Description copied from interface:Visitable
Accept method for visitor support. -
getModifiers
Description copied from interface:NodeWithModifiers
Return the modifiers of this variable declaration. Warning: modifying the returned set will not trigger observers, you have to use setModifiers for that.- Specified by:
getModifiers
in interfaceNodeWithModifiers<RecordPatternExpr>
- Returns:
- modifiers
- See Also:
-
setModifiers
- Specified by:
setModifiers
in interfaceNodeWithModifiers<RecordPatternExpr>
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isRecordPatternExpr
public boolean isRecordPatternExpr()- Overrides:
isRecordPatternExpr
in classExpression
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asRecordPatternExpr
- Overrides:
asRecordPatternExpr
in classExpression
-
toRecordPatternExpr
- Overrides:
toRecordPatternExpr
in classExpression
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ifRecordPatternExpr
- Overrides:
ifRecordPatternExpr
in classExpression
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getPatternList
-
setPatternList
-
remove
-
replace
- Overrides:
replace
in classPatternExpr
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clone
- Overrides:
clone
in classPatternExpr
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getMetaModel
- Overrides:
getMetaModel
in classPatternExpr
- Returns:
- get JavaParser specific node introspection information.
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