de.dante.extex.interpreter.primitives.conditional.analyze
Class Currentiftype

java.lang.Object
  extended byde.dante.extex.interpreter.type.AbstractCode
      extended byde.dante.extex.interpreter.primitives.conditional.analyze.Currentiftype
All Implemented Interfaces:
Code, CountConvertible, Localizable, java.io.Serializable, Theable

public class Currentiftype
extends AbstractCode
implements CountConvertible, Theable

This class provides an implementation for the primitive \currentiftype.

The Primitive \currentiftype

The primitive \currentiftype is an internal count register. It returns an indication of the conditional currently in use. If no conditional is active then 0 is returned. The following table lists the return values for the different types of conditionals:

/if1
/ifcat2
/ifnum3
/ifdim4
/ifodd5
/ifvmode6
/ifhmode7
/ifmmode8
/ifinner9
/ifvoid10
/ifhbox11
/ifvbox12
/ifx13
/ifeof14
/iftrue15
/iffalse16
/ifcase17
/ifdefined18
/ifcsname19
/iffontchar20

The value returned by the primitive is negated if the expansion appears in the else branch.

Syntax

The formal description of this primitive is the following:
    ⟨currentiftype⟩
     → \currentiftype 

Examples

    \count0=\currentiftype  

Version:
$Revision: 1.6 $
Author:
Gerd Neugebauer
See Also:
Serialized Form

Field Summary
protected static long serialVersionUID
          The constant serialVersionUID contains the id for serialization.
 
Constructor Summary
Currentiftype(java.lang.String name)
          Creates a new object.
 
Method Summary
 long convertCount(Context context, TokenSource source, Typesetter typesetter)
          This method converts a register into a count.
 Tokens the(Context context, TokenSource source, Typesetter typesetter)
          This method is the getter for the description of the primitive.
 
Methods inherited from class de.dante.extex.interpreter.type.AbstractCode
enableLocalization, execute, 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

Currentiftype

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

Parameters:
name - the name for debugging
Method Detail

convertCount

public long convertCount(Context context,
                         TokenSource source,
                         Typesetter typesetter)
                  throws InterpreterException
Description copied from interface: CountConvertible
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:
InterpreterException - in case of an error
See Also:
CountConvertible.convertCount( de.dante.extex.interpreter.context.Context, de.dante.extex.interpreter.TokenSource, de.dante.extex.typesetter.Typesetter)

the

public Tokens the(Context context,
                  TokenSource source,
                  Typesetter typesetter)
           throws InterpreterException
Description copied from interface: Theable
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:
InterpreterException - in case of an error
See Also:
Theable.the( de.dante.extex.interpreter.context.Context, de.dante.extex.interpreter.TokenSource, de.dante.extex.typesetter.Typesetter)