org.extex.unit.pdftex
Class Pdflastxform

java.lang.Object
  org.extex.interpreter.type.AbstractCode
      org.extex.unit.pdftex.AbstractPdftexCode
          org.extex.unit.pdftex.Pdflastxform

All Implemented Interfaces:

java.io.Serializable, CountConvertible, Code, Theable, TokensConvertible

public class Pdflastxform
extends AbstractPdftexCode
implements Theable, CountConvertible, TokensConvertible

This class provides an implementation for the primitive \pdflastxform.

The PDF Primitive \pdflastxform

This primitive provides a read-only count register containing the number of the last xform. If none is present then 0 is returned.

Syntax

The formal description of this primitive is the following:

    ⟨pdflastxform⟩
       → \pdflastxform  

Examples

    \count0=\pdflastxform  

Version:

$Revision: 4791 $

Author:

Gerd Neugebauer

See Also:

Serialized Form

Field Summary

protected static long

serialVersionUID The constant serialVersionUID contains the id for serialization.

Constructor Summary

Pdflastxform(CodeToken token)
Creates a new object.

Method Summary

long	convertCount(Context context, TokenSource source, Typesetter typesetter) This method converts a register into a count.
Tokens	convertTokens(Context context, TokenSource source, Typesetter typesetter) This method converts a register into tokens.
Tokens	the(Context context, TokenSource source, Typesetter typesetter) This method is the getter for the description of the primitive.

Methods inherited from class org.extex.unit.pdftex.AbstractPdftexCode

ensurePdftex

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

Field Detail

serialVersionUID

protected static final long serialVersionUID

The constant serialVersionUID contains the id for serialization.

See Also:

Constant Field Values

Constructor Detail

Pdflastxform

public Pdflastxform(CodeToken token)

Creates a new object.

Parameters:

token - the initial token for the primitive

Method Detail

convertCount

public long convertCount(Context context,
                         TokenSource source,
                         Typesetter typesetter)
                  throws HelpingException,
                         TypesetterException

This method converts a register into a count. 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.

Specified by:

convertCount in interface CountConvertible

Parameters:

context - the interpreter context

source - the source for new tokens

typesetter - the typesetter to use for conversion

Returns:

the converted value

Throws:

HelpingException - in case of an error

TypesetterException - in case of an error in the typesetter

See Also:

CountConvertible.convertCount( org.extex.interpreter.context.Context, org.extex.interpreter.TokenSource, org.extex.typesetter.Typesetter)

convertTokens

public Tokens convertTokens(Context context,
                            TokenSource source,
                            Typesetter typesetter)
                     throws HelpingException,
                            TypesetterException

This method converts a register into tokens. 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.

Specified by:

convertTokens in interface TokensConvertible

Parameters:

context - the interpreter context

source - the source for new tokens

typesetter - the typesetter to use for conversion

Returns:

the converted value

Throws:

HelpingException - in case of an error

TypesetterException - in case of an error in the typesetter

See Also:

TokensConvertible.convertTokens( org.extex.interpreter.context.Context, org.extex.interpreter.TokenSource, org.extex.typesetter.Typesetter)

the

public Tokens the(Context context,
                  TokenSource source,
                  Typesetter typesetter)
           throws HelpingException,
                  TypesetterException

This method is the getter for the description of the primitive.

Specified by:

the in interface Theable

Parameters:

context - the interpreter context

source - the source for further tokens to qualify the request

typesetter - the typesetter to use

Returns:

the description of the primitive as list of Tokens

Throws:

HelpingException - in case of an error

TypesetterException - in case of an error

See Also:

Theable.the( org.extex.interpreter.context.Context, org.extex.interpreter.TokenSource, org.extex.typesetter.Typesetter)