org.concord.util.script
Class ReturnStatement

java.lang.Object
  |
  +--org.concord.util.script.ScriptObject
        |
        +--org.concord.util.script.Statement
              |
              +--org.concord.util.script.ReturnStatement

All Implemented Interfaces:

java.beans.BeanInfo

public class ReturnStatement

extends Statement

The ReturnStatement class implements the node that supports the semantics of the "return" statement. The retun statement, when used inside a method, causes the method to terminate and return a value; The return statement works just like a "return" statement in the C language. The finish works in this semantic engine by settig a result value and setting a flag in the current stack frame. It is up to the enclosing semantic nodes to determine if they should implement return semantics at their level of scope.

Version:

$Revision: 1.1.1.1 $ $Date: 2001/04/28 00:39:31 $

Author:

$Author: ed $

Field Summary

protected Expression

expression

Fields inherited from class org.concord.util.script.Statement

empty

Fields inherited from class org.concord.util.script.ScriptObject

beginColumn, beginLine, debug, deleted, doConversion, endColumn, endLine, name, nil, runtimeTable, script

Fields inherited from interface java.beans.BeanInfo

ICON_COLOR_16x16, ICON_COLOR_32x32, ICON_MONO_16x16, ICON_MONO_32x32

Constructor Summary

ReturnStatement()

Method Summary

void	delete()
void	interpret() This does nothing.
void	setExpression(Expression expr)

Methods inherited from class org.concord.util.script.Statement

getLocals

Methods inherited from class org.concord.util.script.ScriptObject

findConstructor, findMethod, getAdditionalBeanInfo, getArrayValue, getAtom, getBeanDescriptor, getCurrentFrame, getDefaultEventIndex, getDefaultPropertyIndex, getEventSetDescriptors, getField, getFieldValue, getIcon, getMethodDescriptors, getName, getPropertyDescriptors, getScript, popFrame, pushFrame, setArrayValue, setCurrentFrame, setFieldValue, setName, setScript, setSourceBounds

Methods inherited from class java.lang.Object

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

Field Detail

expression

protected Expression expression

Constructor Detail

ReturnStatement

public ReturnStatement()

Method Detail

delete

public void delete()

Overrides:

delete in class ScriptObject

setExpression

public void setExpression(Expression expr)

interpret

public void interpret()

Description copied from class: ScriptObject

This does nothing. Maybe should be abstract?

Overrides:

interpret in class Statement