de.dante.extex.interpreter.primitives.math.fraction
Class Above

java.lang.Object
  de.dante.extex.interpreter.type.AbstractCode
      de.dante.extex.interpreter.primitives.math.AbstractMathCode
          de.dante.extex.interpreter.primitives.math.fraction.Above

All Implemented Interfaces:

Code, Localizable, java.io.Serializable

public class Above

extends AbstractMathCode

This class provides an implementation for the primitive \above.

The Math Primitive \above

The math primitive \above arranges that the material in the math group before it is typeset above the material after the primitive. The two parts are separated by a line of the width given. If the width is less than 0pt then no rule is drawn but the given height is left blank.

If several primitives of type \above, \abovewithdelims, \atop, \atopwithdelims, \over, or \overwithdelims are encountered in the same math group then the result is ambiguous and an error is raised.

If the primitive is used outside of math mode then an error is raised.

Syntax

    ⟨above⟩
       → ⟨math material⟩ \above ⟨dimen⟩ ⟨math material⟩ 

Examples

    {a \above.1pt b}  

Version:

$Revision: 1.14 $

Author:

Gerd Neugebauer

See Also:

Serialized Form

serialVersionUID

protected static final long serialVersionUID

The constant serialVersionUID contains the id for serialization.

See Also:

Constant Field Values

Above

public Above(java.lang.String name)

Creates a new object.

Parameters:

name - the name for tracing and debugging

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)