de.dante.extex.interpreter.type
Class AbstractAssignment
java.lang.Object
de.dante.extex.interpreter.type.AbstractCode
de.dante.extex.interpreter.type.AbstractAssignment
- All Implemented Interfaces:
- Code, Localizable, java.io.Serializable
- Direct Known Subclasses:
- AbstractColor, AbstractCount, AbstractDimen, AbstractMuskip, AbstractSkip, AbstractToks, Advance, Batchmode, BoolDef, CatcodePrimitive, Chardef, Colordef, Def, Delcode, Divide, Errorstopmode, Export, Fontdimen, FontPrimitive, HashToksDef, Hyphenchar, Integer, IntegerCode, Interactionmode, JavaDef, Lccode, Let, Mathchardef, MathcodePrimitive, Multiply, MuskipParameter, NamedBool, NamedFont, NamedHashToks, NamedPair, NamedReal, NamedTransform, Namespace, NativeDef, Nonstopmode, Odelcode, Omathchardef, OmathcodePrimitive, PairDef, Prevdepth, Read, Readline, RealDef, Scaled, ScaledCode, Scrollmode, Sfcode, Skewchar, TransformDef, Uccode
- public abstract class AbstractAssignment
- extends AbstractCode
This is the base class for assignments.
The assignments are implemented like any Code with the exception that the
method assign is used instead of the method execute.
This abstract class takes care of the treatment of the \afterassign
token and the \globaldefs declaration.
The Count Parameter \globaldefs
The count register \globaldefs contains the indicator that an
assignment should be performed globally. If its value is greater than zero
then all assignments are global. Otherwise the grouping is honored. In this
sense setting \globaldefs to a positive value implicitly
prefixes all assignments with \global.
Syntax
The formal description of this primitive is the following:
⟨globaldefs⟩
→ \globaldefs ...
Examples
\globaldefs=1
- Version:
- $Revision: 1.11 $
- Author:
- Gerd Neugebauer
- See Also:
- Serialized Form
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
AbstractAssignment
public AbstractAssignment(java.lang.String name)
- Creates a new object.
- Parameters:
name - the name for debugging
assign
public abstract void assign(Flags prefix,
Context context,
TokenSource source,
Typesetter typesetter)
throws InterpreterException
- The method assign is the core of the functionality of
execute().
This method is preferable to execute() since the
execute() method provided in this class takes care of
\afterassignment and \globaldefs as well.
- Parameters:
prefix - the prefix controlling the executioncontext - the interpreter contextsource - the token sourcetypesetter - the typesetter
- Throws:
InterpreterException - in case of an error
execute
public final 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)