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de.dante.extex.interpreter.primitives.table
Class Halign

java.lang.Object
  extended byde.dante.extex.interpreter.type.AbstractCode
      extended byde.dante.extex.interpreter.primitives.table.AbstractAlign
          extended byde.dante.extex.interpreter.primitives.table.Halign
All Implemented Interfaces:
Boxable, BoxOrRule, Code, Localizable, java.io.Serializable
public class Halign
extends AbstractAlign
implements Boxable

This class provides an implementation for the primitive \halign.

The Primitive \halign

TODO missing documentation

Syntax

The formal description of this primitive is the following: 
    ⟨halign⟩
       → \halign ⟨box specification⟩ { ⟨preamble⟩ \cr ⟨rows⟩ }

    ⟨box specification⟩
        →
         | to ⟨rule dimension⟩
         | spread ⟨rule dimension⟩

    ⟨rows⟩
       →
       | ⟨row⟩ ⟨rows⟩

    ⟨preamble⟩
       → ...

Examples

    \halign

Version:
$Revision: 1.34 $
Author:
Gerd Neugebauer
See Also:
Serialized Form

Field Summary
protected static long serialVersionUID
          The constant serialVersionUID contains the id for serialization.
 
Constructor Summary
Halign(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.
 Box getBox(Context context, TokenSource source, Typesetter typesetter)
          Getter for the content as Box.
 
Methods inherited from class de.dante.extex.interpreter.primitives.table.AbstractAlign
getPreamble
 
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

serialVersionUID

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

See Also:
Constant Field Values
Constructor Detail

Halign

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

Parameters:
name - the name for tracing and debugging
Method Detail

execute

public void execute(Flags prefix,
                    Context context,
                    TokenSource source,
                    Typesetter typesetter)
             throws InterpreterException
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
Overrides:
execute in class AbstractCode
Throws:
InterpreterException
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)

getBox

public Box getBox(Context context,
                  TokenSource source,
                  Typesetter typesetter)
           throws InterpreterException
Description copied from interface: Boxable
Getter for the content as Box.

Specified by:
getBox in interface Boxable
Parameters:
context - the interpreter context
source - the source for new tokens
typesetter - the typesetter to use
Returns:
an appropriate Box
Throws:
InterpreterException - in case of an error
See Also:
Boxable.getBox( de.dante.extex.interpreter.context.Context, de.dante.extex.interpreter.TokenSource, de.dante.extex.typesetter.Typesetter)
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