Fix bugs

src/libmwereader/mwereader.cpp

@@ -155,7 +155,7 @@ bool MWEReader::registered = TokenReader::register_path_reader<MWEReader>(
 		// move context position to next token after MWE elements
 		int curr_position = sentence_ctx->get_position();
 		if (curr_position + all.size() < sentence->size()) {
-			sentence_ctx->set_position(sentence_ctx->get_position() + all.size());
+			sentence_ctx->set_position(sentence_ctx->get_position() + all.size() - 1);
 		}
 
 	}
@@ -171,6 +171,8 @@ bool MWEReader::registered = TokenReader::register_path_reader<MWEReader>(
 		// TODO: pass annotated sentence to methods
 		// AnnotatedSentencePtr ann_sentence = AnnotatedSentence::wrap_sentence(sentence);
 		int annotation_number = 0;
+		// keeps position of last annotated token
+		int last_ann_pos = -1;
 		
 		SentenceContextPtr sc = boost::make_shared<Wccl::SentenceContext>(sentence);
 		for (sc->goto_start(); sc->is_current_inside(); sc->advance())
@@ -184,6 +186,10 @@ bool MWEReader::registered = TokenReader::register_path_reader<MWEReader>(
 				if(lex.is_disamb()){
 					std::string base = lex.lemma_utf8();
 					const MWEIndex::luvec& potential = mwe_index_.get_potential_lu(base);
+					// variables holding values for selected lu
+					LexicalUnit::Ptr sel_pLU;
+					std::set<int> sel_positions;
+					int sel_head;
 					BOOST_FOREACH (LexicalUnit::Ptr pLU, potential)
 					{
 						bool ok = true;
@@ -202,18 +208,43 @@ bool MWEReader::registered = TokenReader::register_path_reader<MWEReader>(
 							int head;
 							bool is_here = pLU->IsHere(sc, positions, head);
 							if(is_here) {
+								if (positions.size() > sel_positions.size()) {
+									sel_pLU = pLU;
+									sel_positions = positions;
+									sel_head = head;
+								}
+							}
+						}
+					}
+					if (sel_pLU) {
+						int first_curr_pos;
+						int last_curr_pos;
+						if(!sel_positions.empty())
+							first_curr_pos = *sel_positions.begin();
+						// annotate only if tokens have not been already
+						// anotated; Below check relies on first token and
+						// prevents from re-anotating the last token in the
+						// sentence (grom previous annotating)
+						if (first_curr_pos > last_ann_pos) {
 							if (annotate) {
 								add_mwe_channel(
-										sc, head, positions,
+									sc,
+									sel_head,
+									sel_positions,
 									++annotation_number,
-										pLU->get_base());
+									sel_pLU->get_base()
+								);
 							}
 							else {
 								sc = clone_sentence_add_mwe(
-								      	sc, head, positions, 
-								      	pLU->get_base());
-								}
-							}
+									sc,
+									sel_head,
+									sel_positions,
+									sel_pLU->get_base()
+								);
+							}
+							last_curr_pos = *sel_positions.rbegin();
+							last_ann_pos = last_curr_pos;
 						}
 					}
 				}