SwitchExpression (Groovy 6.0.0-beta-3)

org.codehaus.groovy.ast.expr.SwitchExpression

```
public class SwitchExpression
extends Expression
```
Represents a switch used as an expression, as specified by JEP 361 (Switch Expressions). The selector is evaluated once and matched against the CaseStatement list using Groovy's isCase semantics (or a tableswitch / lookupswitch when the compiler can prove that is equivalent). Each completing arm yields a value via YieldStatement; the expression's result is that value.
Arms stay as CaseStatements, the same way a ClosureExpression holds a statement body: the case label is an expression, the arm is a statement. transformExpression rewrites the selector and case labels only and shares the arm statements.
See Also:
SwitchStatement
YieldStatement
CaseStatement
Since:
6.0.0

Inherited fields
Fields inherited from class	Fields
`class Expression`	`EMPTY_ARRAY`

Constructor Summary

Constructors
Constructor and description
`SwitchExpression(Expression expression)` Constructs a switch expression with the given selector.
`SwitchExpression(Expression expression, Statement defaultStatement)` Constructs a switch expression with the given selector and default arm.
`SwitchExpression(Expression expression, List<CaseStatement> caseStatements, Statement defaultStatement)` Constructs a switch expression with the given selector, case arms, and default arm.

Methods Summary

Methods
Type Params	Return Type	Name and description
	`public void`	`addCase(CaseStatement caseStatement)` Adds a case arm to this switch expression.
	`public List<CaseStatement>`	`getCaseStatements()` Returns the case arms of this switch expression.
	`public Statement`	`getDefaultStatement()` Returns the arm executed when no case matches.
	`public Expression`	`getExpression()` Returns the selector expression matched against case values.
	`public String`	`getText()`
	`public void`	`setDefaultStatement(Statement defaultStatement)` Sets the arm executed when no case matches.
	`public void`	`setExpression(Expression expression)` Sets the selector expression matched against case values.
	`public String`	`toString()`
	`public Expression`	`transformExpression(ExpressionTransformer transformer)` Returns a copy whose selector and case labels have been rewritten.
	`public void`	`visit(GroovyCodeVisitor visitor)`

Inherited Methods Summary

Inherited Methods
Methods inherited from class	Name
`class Expression`	`getType, setType, transformExpression, transformExpressions, transformExpressions`
`class AnnotatedNode`	`addAnnotation, addAnnotation, addAnnotations, getAnnotations, getAnnotations, getDeclaringClass, getGroovydoc, getInstance, hasNoRealSourcePosition, isSynthetic, setDeclaringClass, setHasNoRealSourcePosition, setSynthetic`
`class ASTNode`	`copyNodeMetaData, getColumnNumber, getLastColumnNumber, getLastLineNumber, getLineNumber, getMetaDataMap, getText, setColumnNumber, setLastColumnNumber, setLastLineNumber, setLineNumber, setMetaDataMap, setSourcePosition, visit`

- Constructor Detail
  - public SwitchExpression(Expression expression)
    
    Constructs a switch expression with the given selector. The default statement is initialized to EmptyStatement.INSTANCE.
    Parameters:
    expression - the selector expression
  - public SwitchExpression(Expression expression, Statement defaultStatement)
    
    Constructs a switch expression with the given selector and default arm.
    Parameters:
    expression - the selector expression
    defaultStatement - the arm executed when no case matches; may be EmptyStatement.INSTANCE
  - public SwitchExpression(Expression expression, List<CaseStatement> caseStatements, Statement defaultStatement)
    
    Constructs a switch expression with the given selector, case arms, and default arm.
    Parameters:
    expression - the selector expression
    caseStatements - the case arms
    defaultStatement - the arm executed when no case matches
- Method Detail
  - public void addCase(CaseStatement caseStatement)
    
    Adds a case arm to this switch expression.
    Parameters:
    caseStatement - the CaseStatement to add
  - public List<CaseStatement> getCaseStatements()
    
    Returns the case arms of this switch expression.
    Returns:
    a list of CaseStatement objects; never null
  - public Statement getDefaultStatement()
    
    Returns the arm executed when no case matches.
    Returns:
    the default Statement, or EmptyStatement.INSTANCE if not set
  - public Expression getExpression()
    
    Returns the selector expression matched against case values.
    Returns:
    the selector Expression
  - public String getText()
  - public void setDefaultStatement(Statement defaultStatement)
    
    Sets the arm executed when no case matches.
    Parameters:
    defaultStatement - the default Statement
  - public void setExpression(Expression expression)
    
    Sets the selector expression matched against case values.
    Parameters:
    expression - the selector Expression
  - public String toString()
  - public Expression transformExpression(ExpressionTransformer transformer)
    
    Returns a copy whose selector and case labels have been rewritten. Arm statements are shared: an ExpressionTransformer does not walk statements.
  - public void visit(GroovyCodeVisitor visitor)

Summary:
Constructor
Method

| Detail:
Constructor
Method

[Java] Class SwitchExpression

Constructor Summary

Methods Summary

Inherited Methods Summary

Constructor Detail

public SwitchExpression(Expression expression)

public SwitchExpression(Expression expression, Statement defaultStatement)

public SwitchExpression(Expression expression, List<CaseStatement> caseStatements, Statement defaultStatement)

Method Detail

public void addCase(CaseStatement caseStatement)

public List<CaseStatement> getCaseStatements()

public Statement getDefaultStatement()

public Expression getExpression()

public String getText()

public void setDefaultStatement(Statement defaultStatement)

public void setExpression(Expression expression)

public String toString()

public Expression transformExpression(ExpressionTransformer transformer)

public void visit(GroovyCodeVisitor visitor)