org.concord.util.script
Class BinaryExpression

java.lang.Object
  |
  +--org.concord.util.script.ScriptObject
        |
        +--org.concord.util.script.Expression
              |
              +--org.concord.util.script.BinaryExpression

All Implemented Interfaces:

java.beans.BeanInfo

Direct Known Subclasses:

AndExpression, BitAndExpression, BitOrExpression, BitXorExpression, DivideExpression, EQExpression, ExponentExpression, GEExpression, GTExpression, LEExpression, LTExpression, MinusExpression, ModulusExpression, MultiplyExpression, NEExpression, OrExpression, PlusExpression

public class BinaryExpression

extends Expression

The BinaryExpression class is the base class for all binary operations. It marshalls operands one and two and applies the binOp method which should be implemented by a more specific derived class.

Version:

$Revision: 1.2 $ $Date: 2001/08/31 15:45:34 $

Author:

$Author: ed $

Field Summary

protected java.util.Vector	args
protected java.util.Vector	ops

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

protected

BinaryExpression()

Method Summary

void	addOperand(Expression expr) Set the first operand of this expression.
void	addOperation(Expression expr) Set the first operand of this expression.
java.lang.Object	binOp(java.lang.Object op1, java.lang.Object op2) This method should be overridden by a derived class.
void	delete()
void	interpret() The binary expression interpret checks if both operands are expressions, and then applies the more derived binOp method.
java.lang.String	operatorString()

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

interpret, toString

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, wait, wait, wait

Field Detail

args

protected java.util.Vector args

ops

protected java.util.Vector ops

Constructor Detail

BinaryExpression

protected BinaryExpression()

Method Detail

delete

public void delete()

Overrides:

delete in class ScriptObject

binOp

public java.lang.Object binOp(java.lang.Object op1,
                              java.lang.Object op2)

This method should be overridden by a derived class. (Maybe this method should be abstract.)

addOperand

public void addOperand(Expression expr)

Set the first operand of this expression.

Parameters:

expr - Expression - operand of this opreation.

addOperation

public void addOperation(Expression expr)

Set the first operand of this expression.

Parameters:

expr - Expression - operand of this opreation.

interpret

public void interpret()

The binary expression interpret checks if both operands are expressions, and then applies the more derived binOp method.

Overrides:

interpret in class Expression

operatorString

public java.lang.String operatorString()