org.concord.util.script
Class PlusExpression

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

All Implemented Interfaces:

java.beans.BeanInfo

public class PlusExpression

extends BinaryExpression

The PlusExpression class implements the semantic node for multiply. The binOp method calculates for both Integer and Float by contagion. If either object is a Float then the whole expression will be a Float. Otherwise it will be an Integer. (Eventually these aritmetic semantic nodes will accomodate Double and Long and Short as well.) The plus operation also concatenates Strings.

Version:

$Revision: 1.2 $ $Date: 2001/08/31 15:45:32 $

Author:

$Author: ed $

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

args, 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

PlusExpression()

Method Summary

java.lang.Object	binOp(java.lang.Object op1, java.lang.Object op2) This method should be overridden by a derived class.
java.lang.String	operatorString()

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

addOperand, addOperation, delete, interpret

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

Constructor Detail

PlusExpression

public PlusExpression()

Method Detail

binOp

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

Description copied from class: BinaryExpression

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

Overrides:

binOp in class BinaryExpression

operatorString

public java.lang.String operatorString()

Overrides:

operatorString in class BinaryExpression