executive-feature-extractor.C

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// Copyright 2012, Google Inc.
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// modification, are permitted provided that the following conditions are
// met:
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//   * Redistributions in binary form must reproduce the above
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#include <iostream>
#include <fstream>
#include <string>
#include <vector>

#include "candidate.H"
#include "candidate-set.H"
#include "feature-extractor.H"
#include "executive-feature-extractor.H"
#include "stream-tokenizer.H"

#define DEBUG 1

using std::cerr;
using std::endl;
using std::ifstream;
using std::istream;
using std::string;
using std::vector;

namespace reranker {

IMPLEMENT_FACTORY(ExecutiveFeatureExtractor)

REGISTER_EXECUTIVE_FEATURE_EXTRACTOR(ExecutiveFeatureExtractorImpl)

// Factory method to initialize an ExecutiveFeatureExtractor instance
// from a spec string contained in a file.
shared_ptr<ExecutiveFeatureExtractor>
ExecutiveFeatureExtractor::InitFromSpec(const string &filename) {
  Factory<ExecutiveFeatureExtractor> factory;
  ifstream is(filename.c_str());
  StreamTokenizer st(is);
  return factory.CreateOrDie(st);
}

void
ExecutiveFeatureExtractorImpl::Reset() const {
  for (vector<shared_ptr<FeatureExtractor> >::const_iterator it =
           extractors_.begin();
       it != extractors_.end();
       ++it) {
    (*it)->Reset();
  }
}

void
ExecutiveFeatureExtractorImpl::Extract(CandidateSet &candidate_set) const {
  for (vector<shared_ptr<FeatureExtractor> >::const_iterator it =
           extractors_.begin();
       it != extractors_.end();
       ++it) {
    (*it)->Extract(candidate_set);
  }
}

}  // namespace reranker