org.extex.ocpware.compiler.arith
Class LastChar

java.lang.Object
  org.extex.ocpware.compiler.arith.ArithExpr
      org.extex.ocpware.compiler.arith.LastChar

All Implemented Interfaces:

Expr

public class LastChar
extends ArithExpr
implements Expr

This class represents an arithmetic expression which references a character in the prefix relative to last.

Version:

$Revision:6007 $

Author:

Gerd Neugebauer

Constructor Summary

LastChar(int n)
Creates a new object.

Method Summary

void	outRight(CompilerState cs, boolean withOffset) Compile the string expression into a set of ΩCP instructions.
java.lang.String	toString()

Methods inherited from class org.extex.ocpware.compiler.arith.ArithExpr

needsParen, parse, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

LastChar

public LastChar(int n)

Creates a new object.

Parameters:

n - the number of positions from the right

Method Detail

outRight

public void outRight(CompilerState cs,
                     boolean withOffset)
              throws java.io.IOException,
                     ArgmentTooBigException

Compile the string expression into a set of ΩCP instructions.

Specified by:

outRight in interface Expr

Parameters:

cs - the compiler state for lookup

withOffset - use push back instead of output

Throws:

java.io.IOException - in case of an I/O error

TableNotDefinedException - in case that no matching table is known for a symbolic table reference

ArgmentTooBigException - in case that an argument is encountered which does not fit into two bytes

See Also:

Expr.outRight( org.extex.ocpware.compiler.parser.CompilerState, boolean)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

See Also:

Object.toString()