org.concord.util.script
Class IfThenElseStatement

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

All Implemented Interfaces:

java.beans.BeanInfo

public class IfThenElseStatement

extends Statement

The IfThenElseStatement implements conventional if-then-else semantics.

Version:

$Revision: 1.1.1.1 $ $Date: 2001/04/28 00:39:30 $

Author:

$Author: ed $

Field Summary

protected java.util.Stack	elseIfExpressions
protected java.util.Stack	elseIfStatements
protected Statement	elseStatement
protected Expression	ifExpression
protected Statement	ifStatement

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

IfThenElseStatement()

Method Summary

void	addElseIfExpression(Expression expr)
void	addElseIfStatement(Statement statement)
void	delete()
Statement	getElseStatement()
Expression	getIfExpression()
Statement	getIfStatement()
void	interpret() The interpret method implements conventional if-then-else-semantics.
boolean	removeElseIfExpression(Expression expr)
boolean	removeElseIfStatement(Statement statement)
void	setElseStatement(Statement statement)
void	setIfExpression(Expression expr)
void	setIfStatement(Statement statement)

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

ifExpression

protected Expression ifExpression

ifStatement

protected Statement ifStatement

elseIfExpressions

protected java.util.Stack elseIfExpressions

elseIfStatements

protected java.util.Stack elseIfStatements

elseStatement

protected Statement elseStatement

Constructor Detail

IfThenElseStatement

public IfThenElseStatement()

Method Detail

delete

public void delete()

Overrides:

delete in class ScriptObject

setIfExpression

public void setIfExpression(Expression expr)

setIfStatement

public void setIfStatement(Statement statement)

addElseIfExpression

public void addElseIfExpression(Expression expr)

addElseIfStatement

public void addElseIfStatement(Statement statement)

setElseStatement

public void setElseStatement(Statement statement)

getIfExpression

public Expression getIfExpression()

getIfStatement

public Statement getIfStatement()

removeElseIfExpression

public boolean removeElseIfExpression(Expression expr)

removeElseIfStatement

public boolean removeElseIfStatement(Statement statement)

getElseStatement

public Statement getElseStatement()

interpret

public void interpret()

The interpret method implements conventional if-then-else-semantics. The ifExpression is the first boolean test expression and each subsequent else-if branch has its own boolean expression as well. The ifStatement is the statement interpreted if the ifExpression is true, otherwise it successively interprets each elseIfExpression until one yields true. It interprets the elseStatement if all other boolean expressions yield false.

Overrides:

interpret in class Statement