org.extex.unit.tex.math.numbering
Class Leqno

java.lang.Object
  org.extex.interpreter.type.AbstractCode
      org.extex.unit.tex.math.AbstractMathCode
          org.extex.unit.tex.math.numbering.Leqno

All Implemented Interfaces:

java.io.Serializable, Code

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.

Syntax

The formal description of this primitive is the following:

    ⟨span⟩
       → \leqno  

Examples

    $$ 12 \leqno 34 $$ 

Version:

$Revision:4431 $

Author:

Gerd Neugebauer

See Also:

Serialized Form

Field Summary

protected static long

serialVersionUID The constant serialVersionUID contains the id for serialization.

Constructor Summary

Leqno(CodeToken token)
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. 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.

Methods inherited from class org.extex.unit.tex.math.AbstractMathCode

getListMaker

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

Field Detail

serialVersionUID

protected static final long serialVersionUID

The constant serialVersionUID contains the id for serialization.

See Also:

Constant Field Values

Constructor Detail

Leqno

public Leqno(CodeToken token)

Creates a new object.

Parameters:

token - the initial token for the primitive

Method Detail

execute

public void execute(Flags prefix,
                    Context context,
                    TokenSource source,
                    Typesetter typesetter)
             throws CantUseInException

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

Overrides:

execute in class AbstractCode

Parameters:

prefix - the prefix controlling the execution

context - the interpreter context

source - the token source

typesetter - the typesetter

Throws:

CantUseInException

See Also:

Code.execute( org.extex.interpreter.Flags, org.extex.interpreter.context.Context, org.extex.interpreter.TokenSource, org.extex.typesetter.Typesetter)