gololang.ir

Class CaseStatement

java.lang.Object

gololang.ir.GoloElement<T>

gololang.ir.GoloStatement<CaseStatement>

gololang.ir.CaseStatement

All Implemented Interfaces:

Alternatives<Block>

public final class CaseStatement
extends GoloStatement<CaseStatement>
implements Alternatives<Block>

A case node.

This node describe tree such as:

  case {
    when condition_1 {
      action_1
    }
    when condition_2 {
      action_2
    }
    otherwise {
      default_action
    }
  }
 

Method Summary

Modifier and Type	Method and Description
void	accept(GoloIrVisitor visitor) Accept the visitor.
static CaseStatement	cases() Creates an empty case switch.
java.util.List<GoloElement<?>>	children() Returns a list of all the direct children of this node.
java.util.List<WhenClause<Block>>	getClauses()
Block	getOtherwise()
CaseStatement	otherwise(java.lang.Object action) Defines the default alternative clause.
void	replaceElement(GoloElement<?> original, GoloElement<?> newElement) Replace a child.
protected CaseStatement	self()
CaseStatement	then(java.lang.Object action) Defines the action of the previous clause.
CaseStatement	when(java.lang.Object cond) Defines a new alternative clause.

Methods inherited from class gololang.ir.GoloStatement

of

Methods inherited from class gololang.ir.GoloElement

ancestor, ancestor, ancestorOfType, cantConvert, cantReplace, cantReplace, children, children, descendants, descendants, descendants, documentation, documentation, doesNotContain, enclosingModule, getLocalReferenceTable, hasParent, hasPosition, makeParentOf, metadata, metadata, next, next, next, ofAST, parent, positionInSourceCode, positionInSourceCode, previous, previous, previous, replaceInParentBy, walk

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

cases

public static CaseStatement cases()

Creates an empty case switch.

self

protected CaseStatement self()

Specified by:

self in class GoloElement<CaseStatement>

when

public CaseStatement when(java.lang.Object cond)

Defines a new alternative clause.

This is a builder method.

Specified by:

when in interface Alternatives<Block>

Parameters:

cond - an expression node defining the clause.

then

public CaseStatement then(java.lang.Object action)

Defines the action of the previous clause.

This is a builder method.

It must be called after a call to when. For instance

  alternative.when(condition).then(action);
 

Specified by:

then in interface Alternatives<Block>

Parameters:

action - a Block containing the statements to execute.

otherwise

public CaseStatement otherwise(java.lang.Object action)

Defines the default alternative clause.

This is a builder method.

Specified by:

otherwise in interface Alternatives<Block>

Parameters:

action - a Block containing the statements to execute.

getClauses

public java.util.List<WhenClause<Block>> getClauses()

Specified by:

getClauses in interface Alternatives<Block>

getOtherwise

public Block getOtherwise()

Specified by:

getOtherwise in interface Alternatives<Block>

accept

public void accept(GoloIrVisitor visitor)

Accept the visitor.

This method should only call the visitor visitXXXX method. The children of this node will be visited by the GoloElement.walk(GoloIrVisitor) method.

Specified by:

accept in class GoloElement<CaseStatement>

children

public java.util.List<GoloElement<?>> children()

Returns a list of all the direct children of this node.

Overrides:

children in class GoloElement<CaseStatement>

replaceElement

public void replaceElement(GoloElement<?> original,
                           GoloElement<?> newElement)

Replace a child.

Replace original with newElement if original is a child of this node and type matches.

Specified by:

replaceElement in class GoloElement<CaseStatement>

Parameters:

original - the original value to replace. Must be a child of this node

newElement - the element to replace with. Type must match.

See Also:

GoloElement.cantReplace(), GoloElement.cantReplace(GoloElement, GoloElement), GoloElement.doesNotContain(GoloElement), GoloElement.cantConvert(String, Object)