org.extex.unit.etex.register.muskip
Class Muexpr

java.lang.Object
  org.extex.interpreter.type.AbstractCode
      org.extex.unit.etex.register.muskip.Muexpr

All Implemented Interfaces:

java.io.Serializable, MuskipConvertible, Code

public class Muexpr
extends AbstractCode
implements MuskipConvertible

This class provides an implementation for the primitive \muexpr.

The Primitive \muexpr

The primitive \muexpr evaluates an expression which results in a mu value.

TODO missing documentation

Syntax

The formal description of this primitive is the following:

    ⟨muexpr⟩
      → \muexpr 

Examples

    \muexpr  

Version:

$Revision:4431 $

Author:

Gerd Neugebauer

See Also:

Serialized Form

Constructor Summary

Muexpr(CodeToken token)
Creates a new object.

Method Summary

Muskip

convertMuskip(Context context, TokenSource source, Typesetter typesetter) This method converts a register into a muskip.

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

execute, 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

Constructor Detail

Muexpr

public Muexpr(CodeToken token)

Creates a new object.

Parameters:

token - the initial token for the primitive

Method Detail

convertMuskip

public Muskip convertMuskip(Context context,
                            TokenSource source,
                            Typesetter typesetter)
                     throws HelpingException,
                            TypesetterException

This method converts a register into a muskip. It might be necessary to read further tokens to determine which value to use. For instance an additional register number might be required. In this case the additional arguments Context and TokenSource can be used. The return value is the length in scaled points.

Specified by:

convertMuskip in interface MuskipConvertible

Parameters:

context - the interpreter context

source - the source for new tokens

typesetter - the typesetter to use for conversion

Returns:

the converted value in mu

Throws:

HelpingException - in case of an error

TypesetterException - in case of an error in the typesetter

See Also:

MuskipConvertible.convertMuskip( org.extex.interpreter.context.Context, org.extex.interpreter.TokenSource, org.extex.typesetter.Typesetter)