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// $Id$
#ifndef _SCORE_PRODUCER_H_
#define _SCORE_PRODUCER_H_
#include <string>
class ScoreIndexManager;
// to keep track of the various things that can produce a score,
// we use this evil implementation-inheritance to give them each
// a unique, sequential (read: good for vector indices) ID
//
// NOTE- do not confuse this with a producer/consumer pattern.
// this is not a producer in that sense.
class ScoreProducer
{
private:
static unsigned int s_globalScoreBookkeepingIdCounter;
unsigned int m_scoreBookkeepingId;
ScoreProducer(const ScoreProducer&); // don't implement
protected:
// it would be nice to force registration here, but some Producer objects
// are constructed before they know how many scores they have
ScoreProducer();
virtual ~ScoreProducer();
public:
unsigned int GetScoreBookkeepingID() const { return m_scoreBookkeepingId; }
//! returns the number of scores that a subclass produces.
// For example, a language model conventionally produces 1, a translation table some arbitrary number, etc
virtual unsigned int GetNumScoreComponents() const = 0;
//! returns a string description of this producer
virtual const std::string GetScoreProducerDescription() const = 0;
};
#endif
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