org.extex.unit.tex.prefix
Class Outer

java.lang.Object
  extended by org.extex.interpreter.type.AbstractCode
      extended by org.extex.unit.tex.prefix.Outer
All Implemented Interfaces:
java.io.Serializable, Code, PrefixCode

public class Outer
extends AbstractCode
implements PrefixCode

This class provides an implementation for the primitive \outer. It does simply nothing, but as a side effect the prefix OUTER is added to the prefixes.

The Prefix Primitive \outer

The primitive \outer is a prefix modifying the operation of a following primitive. If the immediately following token denotes another prefix primitives then the functionality is accumulated. This means that the next non-prefix primitive is modified by any directly preceding prefix primitives.

Multiple \outer prefixes act identical to a single one.

Syntax

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

Examples

    \outer\def#1{--#1--}  
    \outer\outer\def#1{--#1--}  

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
Outer(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.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

Outer

public Outer(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)
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
See Also:
AbstractCode.execute( org.extex.interpreter.Flags, org.extex.interpreter.context.Context, org.extex.interpreter.TokenSource, org.extex.typesetter.Typesetter)