Package com.nt.udc.io

Class COSARExprSubstr

java.lang.Object

com.nt.udc.io.COSARExpr

com.nt.udc.io.COSARExprSubstr

public class COSARExprSubstr
extends COSARExpr

This class represents the substring operation.

Field Summary

Fields

Modifier and Type	Field	Description
protected COSARExpr	m_endIndex
protected COSARExpr	m_startIndex
protected COSARExpr	m_string	These members represent the operands.
protected COSARAttrString	m_value

Fields inherited from class com.nt.udc.io.COSARExpr

m_bIsConstant

Constructor Summary

Constructors

Constructor	Description
COSARExprSubstr(COSARExpr op1, COSARExpr op2)
COSARExprSubstr(COSARExpr op1, COSARExpr op2, COSARExpr op3)

Method Summary

Modifier and Type	Method	Description
COSARAttr	eval(HashMap symbols)	This function is used to evaluate the expression.
String	toString()

Methods inherited from class com.nt.udc.io.COSARExpr

isConstant

Methods inherited from class java.lang.Object

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

Field Details

m_value

protected COSARAttrString m_value

m_string

protected COSARExpr m_string

These members represent the operands.

m_startIndex

protected COSARExpr m_startIndex

m_endIndex

protected COSARExpr m_endIndex

Constructor Details

COSARExprSubstr

public COSARExprSubstr(COSARExpr op1,
 COSARExpr op2,
 COSARExpr op3)
                throws Exception

Throws:

Exception

COSARExprSubstr

public COSARExprSubstr(COSARExpr op1,
 COSARExpr op2)
                throws Exception

Throws:

Exception

Method Details

eval

public COSARAttr eval(HashMap symbols)
               throws Exception

Description copied from class: COSARExpr

This function is used to evaluate the expression. A symbol table is passed to help in retrieving the value of referenced symbols. The HashMap should contain values stored as COSARAttr objects, keyed by their associated symbol's name.

Overrides:

eval in class COSARExpr

Returns:

The expression's value

Throws:

Exception

toString

public String toString()

Overrides:

toString in class Object

Returns:

A string representation of the OSAR expression