Class Leqno

  extended byde.dante.extex.interpreter.type.AbstractCode
      extended byde.dante.extex.interpreter.primitives.math.AbstractMathCode
          extended byde.dante.extex.interpreter.primitives.math.numbering.Leqno
All Implemented Interfaces:
Code, Localizable,

public class Leqno
extends AbstractMathCode

This class provides an implementation for the primitive \leqno.

The Math Primitive \leqno

The math primitive \leqno arranges that the following material is typeset in math mode and placed on the left side of the preceding material.

The primitive can be used in display math mode only. If used in another mode an error is raised. An error is also raised when more than one invocations appear in one display math list or \leqno appears together with \eqno in a display math list.


The formal description of this primitive is the following:
       → \leqno  


    $$ 12 \leqno 34 $$ 

$Revision: 1.12 $
Gerd Neugebauer
See Also:
Serialized Form

Field Summary
protected static long serialVersionUID
          The constant serialVersionUID contains the id for serialization.
Constructor Summary
Leqno(java.lang.String name)
          Creates a new object.
Method Summary
 void execute(Flags prefix, Context context, TokenSource source, Typesetter typesetter)
          This method takes the first token and executes it.
Methods inherited from class de.dante.extex.interpreter.primitives.math.AbstractMathCode
Methods inherited from class de.dante.extex.interpreter.type.AbstractCode
enableLocalization, getLocalizer, getName, isIf, isOuter, printable, printableControlSequence, readResolve, setName, toString
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail


protected static final long serialVersionUID
The constant serialVersionUID contains the id for serialization.

See Also:
Constant Field Values
Constructor Detail


public Leqno(java.lang.String name)
Creates a new object.

name - the name for tracing and debugging
Method Detail


public void execute(Flags prefix,
                    Context context,
                    TokenSource source,
                    Typesetter typesetter)
             throws CantUseInException
Description copied from interface: Code
This method takes the first token and executes it. The result is placed on the stack. This operation might have side effects. To execute a token it might be necessary to consume further tokens.

Specified by:
execute in interface Code
execute in class AbstractCode
See Also:
Code.execute( de.dante.extex.interpreter.Flags, de.dante.extex.interpreter.context.Context, de.dante.extex.interpreter.TokenSource, de.dante.extex.typesetter.Typesetter)