org.extex.interpreter.parser
Interface CountParser

All Known Subinterfaces:

Interpreter, TokenSource

All Known Implementing Classes:

ConstantCountParser, Max, Moritz, StringSource

public interface CountParser

This interface describes a parser for integers and non-negative numbers.

Version:

$Revision: 6276 $

Author:

Gerd Neugebauer

Method Summary

long	parseInteger(Context context, TokenSource source, Typesetter typesetter) Parse an integer.
long	parseNumber(Context context, TokenSource source, Typesetter typesetter) Parse a non-negative number.

Method Detail

parseNumber

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

Parse a non-negative number.

Parameters:

context - the interpreter context

source - the source for new tokens

typesetter - the typesetter

Returns:

the value

Throws:

HelpingException - in case of an error

TypesetterException - in case of an error in the typesetter

parseInteger

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

Parse an integer. This number can either be positive or negative.

Parameters:

context - the interpreter context

source - the source for new tokens

typesetter - the typesetter

Returns:

the value

Throws:

HelpingException - in case of an error

TypesetterException - in case of an error in the typesetter