com.github.javaparser.ast.stmt

Class SwitchEntry

java.lang.Object

com.github.javaparser.ast.Node

com.github.javaparser.ast.stmt.SwitchEntry

All Implemented Interfaces:

NodeWithRange<Node>, NodeWithStatements<SwitchEntry>, NodeWithTokenRange<Node>, Observable, Visitable, HasParentNode<Node>, Cloneable

public class SwitchEntry
extends Node
implements NodeWithStatements<SwitchEntry>

One case in a switch statement

The main Javadoc is in SwitchStmt

Java 1.0-11

 switch (i) {
   case 1:
   case 2:
     System.out.println(444);
     break;
   default:
     System.out.println(0);
 }
 

This contains three SwitchEntrys. All of them are of type STATEMENT_GROUP.

• The first one has label 1 and no statements.
• The second has label 2 and two statements (the println and the break).
• The third, the default, has no label and one statement.

Java 12-

     case 1 -> 15*15;
     case 2 -> { a++; b++; }
     case 3 -> throw new Exception();
 

These are three new variants.

• The first one is of type EXPRESSION and stores its Expression in an ExpressionStmt which is stored as the first and only statement in statements.
• The second one is of type BLOCK and stores its BlockStmt as the first and only statement in statements.
• The third one is of type THROWS_STATEMENT and stores its ThrowStmt as the first and only statement in statements.

     case MONDAY, FRIDAY, SUNDAY -> 6;
 

Multiple case labels are now allowed.

     case 16*16, 10+10 -> 6;
 

Many kinds of expressions are now allowed.

Author:

Julio Vilmar Gesser

See Also:

SwitchStmt, SwitchExpr

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	SwitchEntry.Type

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

Field Summary

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

Constructor Summary

Constructors

Constructor and Description
SwitchEntry()
SwitchEntry(NodeList<Expression> labels, SwitchEntry.Type type, NodeList<Statement> statements) This constructor exists for backwards compatibility for code that instantiated `SwitchEntries` before the `isDefault` and guard fields were added.
SwitchEntry(NodeList<Expression> labels, SwitchEntry.Type type, NodeList<Statement> statements, boolean isDefault)
SwitchEntry(TokenRange tokenRange, NodeList<Expression> labels, SwitchEntry.Type type, NodeList<Statement> statements) This constructor exists for backwards compatibility for code that instantiated `SwitchEntries` before the `isDefault` and guard fields were added.
SwitchEntry(TokenRange tokenRange, NodeList<Expression> labels, SwitchEntry.Type type, NodeList<Statement> statements, boolean isDefault) This constructor is used by the parser and is considered private.
SwitchEntry(TokenRange tokenRange, NodeList<Expression> labels, SwitchEntry.Type type, NodeList<Statement> statements, boolean isDefault, Expression guard) This constructor is used by the parser and is considered private.

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.
SwitchEntry	clone()
Optional<Expression>	getGuard()
NodeList<Expression>	getLabels()
SwitchEntryMetaModel	getMetaModel()
NodeList<Statement>	getStatements()
SwitchEntry.Type	getType()
boolean	isDefault()
boolean	isSwitchStatementEntry() This is required for the ConcreteSyntaxModel, specifically to determine whether this entry uses the classic switch statement syntax (e.g.
boolean	remove(Node node)
SwitchEntry	removeGuard()
boolean	replace(Node node, Node replacementNode)
SwitchEntry	setDefault(boolean isDefault)
SwitchEntry	setGuard(Expression guard)
SwitchEntry	setLabels(NodeList<Expression> labels) Sets the label
SwitchEntry	setStatements(NodeList<Statement> statements)
SwitchEntry	setType(SwitchEntry.Type type)

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.ast.nodeTypes.NodeWithStatements

addAndGetStatement, addAndGetStatement, addAndGetStatement, addAndGetStatement, addStatement, addStatement, addStatement, addStatement, addStatement, copyStatements, copyStatements, getStatement, isEmpty, setStatement

Methods inherited from interface com.github.javaparser.HasParentNode

findAncestor, findAncestor, findAncestor, hasParentNode, isDescendantOf

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

containsWithin, containsWithinRange, getBegin, getEnd, hasRange

Constructor Detail

SwitchEntry

public SwitchEntry()

SwitchEntry

public SwitchEntry(TokenRange tokenRange,
                   NodeList<Expression> labels,
                   SwitchEntry.Type type,
                   NodeList<Statement> statements)

This constructor exists for backwards compatibility for code that instantiated `SwitchEntries` before the `isDefault` and guard fields were added.

SwitchEntry

public SwitchEntry(NodeList<Expression> labels,
                   SwitchEntry.Type type,
                   NodeList<Statement> statements)

This constructor exists for backwards compatibility for code that instantiated `SwitchEntries` before the `isDefault` and guard fields were added.

SwitchEntry

public SwitchEntry(NodeList<Expression> labels,
                   SwitchEntry.Type type,
                   NodeList<Statement> statements,
                   boolean isDefault)

SwitchEntry

public SwitchEntry(TokenRange tokenRange,
                   NodeList<Expression> labels,
                   SwitchEntry.Type type,
                   NodeList<Statement> statements,
                   boolean isDefault,
                   Expression guard)

This constructor is used by the parser and is considered private.

SwitchEntry

public SwitchEntry(TokenRange tokenRange,
                   NodeList<Expression> labels,
                   SwitchEntry.Type type,
                   NodeList<Statement> statements,
                   boolean isDefault)

This constructor is used by the parser and is considered private.

Method Detail

isSwitchStatementEntry

public boolean isSwitchStatementEntry()

This is required for the ConcreteSyntaxModel, specifically to determine whether this entry uses the classic switch statement syntax (e.g. `case X: ...`) or the newer switch expression syntax (`case X -> ...`). The entry type is STATEMENT_GROUP in the switch statement case and all other values are for the various switch expressions.

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)

getLabels

public NodeList<Expression> getLabels()

getStatements

public NodeList<Statement> getStatements()

Specified by:

getStatements in interface NodeWithStatements<SwitchEntry>

setLabels

public SwitchEntry setLabels(NodeList<Expression> labels)

Sets the label

Parameters:

labels - the label, can be null

Returns:

this, the SwitchEntry

setStatements

public SwitchEntry setStatements(NodeList<Statement> statements)

Specified by:

setStatements in interface NodeWithStatements<SwitchEntry>

remove

public boolean remove(Node node)

Overrides:

remove in class Node

clone

public SwitchEntry clone()

Overrides:

clone in class Node

getMetaModel

public SwitchEntryMetaModel getMetaModel()

Overrides:

getMetaModel in class Node

Returns:

get JavaParser specific node introspection information.

getType

public SwitchEntry.Type getType()

setType

public SwitchEntry setType(SwitchEntry.Type type)

replace

public boolean replace(Node node,
                       Node replacementNode)

Overrides:

replace in class Node

isDefault

public boolean isDefault()

setDefault

public SwitchEntry setDefault(boolean isDefault)

getGuard

public Optional<Expression> getGuard()

setGuard

public SwitchEntry setGuard(Expression guard)

removeGuard

public SwitchEntry removeGuard()