Class Vrule

  extended byde.dante.extex.interpreter.type.AbstractCode
All Implemented Interfaces:
BoxOrRule, Code, Localizable, RuleConvertible,

public class Vrule
extends AbstractCode
implements RuleConvertible

This class provides an implementation for the primitive \vrule.

The Primitive \vrule

This primitive produces a vertical rule. This is a rectangular area of specified dimensions. If not overwritten the height and depth are 0pt and the width is 0.4 pt (26214 sp).


The formal description of this primitive is the following:
        → \vrule⟨rule specification⟩

    ⟨rule specification⟩
        → ⟨optional spaces⟩
         |  ⟨rule dimension⟩ ⟨rule specification⟩

    ⟨rule dimension⟩
        → width ⟨dimen⟩
         |  height ⟨dimen⟩
         |  depth ⟨dimen⟩   

The color from the typographic context is taken as foregroud color for the rule. The default color is black.


    \vrule height 2pt  
    \vrule width 2pt depth 3mm height \dimen4  

$Revision: 1.15 $
Gerd Neugebauer
See Also:
Serialized Form

Field Summary
protected static long serialVersionUID
          The constant serialVersionUID contains the id for serialization.
Constructor Summary
Vrule(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.
 RuleNode getRule(Context context, TokenSource source, Typesetter typesetter)
          Getter for the content as Rule.
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 Vrule(java.lang.String name)
Creates a new object.

name - the name for debugging
Method Detail


public void execute(Flags prefix,
                    Context context,
                    TokenSource source,
                    Typesetter typesetter)
             throws InterpreterException
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
prefix - the prefix controlling the execution
context - the interpreter context
source - the token source
typesetter - the typesetter
InterpreterException - in case of an error
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), "TeX – The Program [463]"


public RuleNode getRule(Context context,
                        TokenSource source,
                        Typesetter typesetter)
                 throws InterpreterException
Description copied from interface: RuleConvertible
Getter for the content as Rule.

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