org.extex.ocpware.compiler.left
Class StringItem

java.lang.Object
  org.extex.ocpware.compiler.left.StringItem

All Implemented Interfaces:

Left, Expr

public class StringItem
extends java.lang.Object
implements Left, Expr

This class represents a string of characters as left item.

Version:

$Revision:6007 $

Author:

Gerd Neugebauer

Constructor Summary

StringItem(java.lang.String s)
Creates a new object.

Method Summary

java.util.List<java.lang.Integer>	genLeft(State state, CompilerState cs) Compile the left item and add the appropriate instructions to the state.
void	outRight(CompilerState cs, boolean withOffset) Compile the string expression into a set of ΩCP instructions.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

StringItem

public StringItem(java.lang.String s)

Creates a new object.

Parameters:

s - the string

Method Detail

genLeft

public java.util.List<java.lang.Integer> genLeft(State state,
                                                 CompilerState cs)
                                          throws java.io.IOException,
                                                 ArgmentTooBigException

Compile the left item and add the appropriate instructions to the state. As a result a list of indices into the code is returned which should need to be fixed. This fix inserts the position of the code into the places given. Thus it is possible to put destinations for goto statements into the holes.

Specified by:

genLeft in interface Left

Parameters:

state - the current state

cs - the compiler state

Returns:

the list of instructions to fix

Throws:

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

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

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

See Also:

Left.genLeft(State, CompilerState)

outRight

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

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:

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

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

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

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()