org.extex.unit.etex.register.count
Class Lastnodetype

java.lang.Object
  extended by org.extex.interpreter.type.AbstractCode
      extended by org.extex.unit.tex.register.count.AbstractReadonlyCount
          extended by org.extex.unit.etex.register.count.Lastnodetype
All Implemented Interfaces:
java.io.Serializable, CountConvertible, Code, Theable

public class Lastnodetype
extends AbstractReadonlyCount

This class provides an implementation for the primitive \lastnodetype.

The Primitive \lastnodetype

The primitive \lastnodetype inspects the last node in the typesetter and returns a count value according to the node type found. The following table shows the values returned:

-1no node; i.e. the list is empty
0char node
1hlist node
2vlist node
3rule node
4insertion node
5mark node
6adjust node
7ligature node
8discretionary node
9whatsit node
10math node
11glue node
12kern node
13penalty node
14unset node (not used in ExTeX)
15math mode nodes

Syntax

The formal description of this primitive is the following:
    ⟨lastnodetype⟩
       → \lastnodetype  

Examples

    \count42=\lastnodetype  
    Test\the\lastnodetype  

Version:
$Revision: 4732 $
Author:
Gerd Neugebauer, Sebastian Waschik
See Also:
Serialized Form

Constructor Summary
Lastnodetype(CodeToken token)
          Creates a new object.
 
Method Summary
 long convertCount(Context context, TokenSource source, Typesetter typesetter)
          This method converts a register into a count.
 
Methods inherited from class org.extex.unit.tex.register.count.AbstractReadonlyCount
execute, the
 
Methods inherited from class org.extex.interpreter.type.AbstractCode
getLocalizer, getName, getToken, isIf, isOuter, readResolve, toString, toText, toText
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

Lastnodetype

public Lastnodetype(CodeToken token)
Creates a new object.

Parameters:
token - the initial token for the primitive
Method Detail

convertCount

public long convertCount(Context context,
                         TokenSource source,
                         Typesetter typesetter)
                  throws HelpingException,
                         TypesetterException
This method converts a register into a count. It might be necessary to read further tokens to determine which value to use. For instance an additional register number might be required. In this case the additional arguments Context and TokenSource can be used.

Parameters:
context - the interpreter context
source - the source for new tokens
typesetter - the typesetter to use for conversion
Returns:
the converted value
Throws:
HelpingException - in case of an error
TypesetterException - in case of an error in the typesetter
See Also:
CountConvertible.convertCount( org.extex.interpreter.context.Context, org.extex.interpreter.TokenSource, org.extex.typesetter.Typesetter)