Package com.github.javaparser.ast.stmt
Class SwitchStmt
java.lang.Object
com.github.javaparser.ast.Node
com.github.javaparser.ast.stmt.Statement
com.github.javaparser.ast.stmt.SwitchStmt
- All Implemented Interfaces:
NodeWithRange<Node>
,NodeWithTokenRange<Node>
,SwitchNode
,Observable
,Visitable
,HasParentNode<Node>
,Cloneable
The switch statement
Java 1.0-1.4
The basic C-like switch statement. It can switch only on integers.switch(x) { case 5: case 6: a=100; break; case 9: a=33; break; default: throw new IllegalStateException(); };
In
switch(a) { ... }
the selector is "a",
and the contents of the { ... } are the entries.
Java 5-6
Switching can now also be done on enum constants.Java 7-11
Switching can now also be done on strings.Java 12
In preparation for pattern matching, lots of changes are made:- multiple labels per case
- a -> syntax that does not fall through.
- break can take any expression (usable in the
SwitchExpr
) - switch can be used as an expression (it becomes a
SwitchExpr
)
switch(x) { case BANANA,PEAR: b=10; break; default: b=5; };
switch(x) { case 5,6 -> println("uhuh"); default -> println("nope"); };
Java 13
The break statement has been reverted to what it was before Java 12, and break-with-value is now the YieldStatement.- Author:
- Julio Vilmar Gesser
- See Also:
SwitchEntry
,SwitchExpr
,SwitchNode
,BreakStmt
,YieldStmt
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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
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
ConstructorDescriptionSwitchStmt(Expression selector, NodeList<SwitchEntry> entries)
SwitchStmt(TokenRange tokenRange, Expression selector, NodeList<SwitchEntry> entries)
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()
getEntry(int i)
void
ifSwitchStmt(Consumer<SwitchStmt> action)
boolean
boolean
boolean
setEntries(NodeList<SwitchEntry> entries)
setSelector(Expression selector)
Methods inherited from class com.github.javaparser.ast.stmt.Statement
asAssertStmt, asBlockStmt, asBreakStmt, asContinueStmt, asDoStmt, asEmptyStmt, asExplicitConstructorInvocationStmt, asExpressionStmt, asForEachStmt, asForStmt, asIfStmt, asLabeledStmt, asLocalClassDeclarationStmt, asLocalRecordDeclarationStmt, asReturnStmt, asSynchronizedStmt, asThrowStmt, asTryStmt, asUnparsableStmt, asWhileStmt, asYieldStmt, ifAssertStmt, ifBlockStmt, ifBreakStmt, ifContinueStmt, ifDoStmt, ifEmptyStmt, ifExplicitConstructorInvocationStmt, ifExpressionStmt, ifForEachStmt, ifForStmt, ifIfStmt, ifLabeledStmt, ifLocalClassDeclarationStmt, ifLocalRecordDeclarationStmt, ifReturnStmt, ifSynchronizedStmt, ifThrowStmt, ifTryStmt, ifUnparsableStmt, ifWhileStmt, ifYieldStmt, isAssertStmt, isBlockStmt, isBreakStmt, isContinueStmt, isDoStmt, isEmptyStmt, isExplicitConstructorInvocationStmt, isExpressionStmt, isForEachStmt, isForStmt, isIfStmt, isLabeledStmt, isLocalClassDeclarationStmt, isLocalRecordDeclarationStmt, isReturnStmt, isSynchronizedStmt, isThrowStmt, isTryStmt, isUnparsableStmt, isWhileStmt, isYieldStmt, toAssertStmt, toBlockStmt, toBreakStmt, toContinueStmt, toDoStmt, toEmptyStmt, toExplicitConstructorInvocationStmt, toExpressionStmt, toForEachStmt, toForStmt, toIfStmt, toLabeledStmt, toLocalClassDeclarationStmt, toLocalRecordDeclarationStmt, toReturnStmt, toSynchronizedStmt, toThrowStmt, toTryStmt, toUnparsableStmt, toWhileStmt, toYieldStmt
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
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.NodeWithRange
containsWithin, containsWithinRange, getBegin, getEnd, hasRange
Methods inherited from interface com.github.javaparser.ast.nodeTypes.SwitchNode
getComment, isEmpty
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Constructor Details
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SwitchStmt
public SwitchStmt() -
SwitchStmt
-
SwitchStmt
This constructor is used by the parser and is considered private.
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Method Details
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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. -
getEntries
- Specified by:
getEntries
in interfaceSwitchNode
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getEntry
- Specified by:
getEntry
in interfaceSwitchNode
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getSelector
- Specified by:
getSelector
in interfaceSwitchNode
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setEntries
- Specified by:
setEntries
in interfaceSwitchNode
-
setSelector
- Specified by:
setSelector
in interfaceSwitchNode
-
remove
- Specified by:
remove
in interfaceSwitchNode
- Overrides:
remove
in classNode
-
clone
- Specified by:
clone
in interfaceSwitchNode
- Overrides:
clone
in classStatement
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getMetaModel
- Overrides:
getMetaModel
in classStatement
- Returns:
- get JavaParser specific node introspection information.
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replace
- Specified by:
replace
in interfaceSwitchNode
- Overrides:
replace
in classNode
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isSwitchStmt
public boolean isSwitchStmt()- Overrides:
isSwitchStmt
in classStatement
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asSwitchStmt
- Overrides:
asSwitchStmt
in classStatement
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ifSwitchStmt
- Overrides:
ifSwitchStmt
in classStatement
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toSwitchStmt
- Overrides:
toSwitchStmt
in classStatement
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