annotationmatch.cpp

#include <libwccl/values/annotationmatch.h>
#include <libwccl/values/position.h>
#include <boost/lexical_cast.hpp>

namespace Wccl {

std::string AnnotationMatch::to_raw_string() const
{
	return "ANN[" + boost::lexical_cast<std::string>(abs_pos_) + "," + channel_ + "]";
}

int AnnotationMatch::first_token(const boost::shared_ptr<Corpus2::AnnotatedSentence>& s) const
{
	const Corpus2::AnnotationChannel& chan = s->get_channel(channel_);
	int seg = chan.get_segment_at(abs_pos_);
	if (seg > 0) {
		for (int i = 0; i < abs_pos_; ++i) {
			if (chan.get_segment_at(i) == seg) {
				return i;
			}
		}
		return abs_pos_;
	} else {
		return Position::Nowhere;
	}
}

int AnnotationMatch::last_token(const boost::shared_ptr<Corpus2::AnnotatedSentence>& s) const
{
	const Corpus2::AnnotationChannel& chan = s->get_channel(channel_);
	int seg = chan.get_segment_at(abs_pos_);
	if (seg > 0) {
		for (int i = s->size() - 1; i > abs_pos_; --i) {
			if (chan.get_segment_at(i) == seg) {
				return i;
			}
		}
		return abs_pos_;
	} else {
		return Position::Nowhere;
	}
}


} /* end ns Wccl */