org.extex.unit.tex.macro
Class Xdef

java.lang.Object
  org.extex.interpreter.type.AbstractCode
      org.extex.interpreter.type.AbstractAssignment
          org.extex.unit.tex.macro.Edef
              org.extex.unit.tex.macro.Xdef

All Implemented Interfaces:

java.io.Serializable, LogEnabled, Code

public class Xdef
extends Edef

This class provides an implementation for the primitive \xdef.

The Primitive \xdef

This primitive is an abbreviation for \global\edef. Thus the description of \edef can be consulted for details. TODO missing documentation

Syntax

The formal description of this primitive is the following:

    ⟨xdef⟩
       → ⟨prefix⟩ \xdef ⟨control sequence⟩ ⟨parameter text⟩ { ⟨replacement text⟩ }

    ⟨prefix⟩
      →
       | \global ⟨prefix⟩
       | \long ⟨prefix⟩
       | \outer ⟨prefix⟩

Examples

    \xdef#1{--#1--}  

Version:

$Revision: 4732 $

Author:

Gerd Neugebauer

See Also:

Serialized Form

Field Summary

protected static long

serialVersionUID The constant serialVersionUID contains the id for serialization.

Constructor Summary

Xdef(CodeToken token)
Creates a new object.

Method Summary

void	assign(Flags prefix, Context context, TokenSource source, Typesetter typesetter) The method assign is the core of the functionality of execute().

Methods inherited from class org.extex.unit.tex.macro.Edef

enableLogging

Methods inherited from class org.extex.interpreter.type.AbstractAssignment

execute

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

Xdef

public Xdef(CodeToken token)

Creates a new object.

Parameters:

token - the initial token for the primitive

Method Detail

assign

public void assign(Flags prefix,
                   Context context,
                   TokenSource source,
                   Typesetter typesetter)
            throws HelpingException,
                   TypesetterException

The method assign is the core of the functionality of execute(). This method is preferable to execute() since the execute() method provided in this class takes care of \afterassignment and \globaldefs as well.

Overrides:

assign in class Edef

Parameters:

prefix - the prefix controlling the execution

context - the interpreter context

source - the token source

typesetter - the typesetter

Throws:

HelpingException - in case of an error

TypesetterException - in case of an error in the typesetter

See Also:

Def.assign( org.extex.interpreter.Flags, org.extex.interpreter.context.Context, org.extex.interpreter.TokenSource, org.extex.typesetter.Typesetter)