X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Flibmarklin%2Fblock.cpp;h=e9c170c1ccb7140911666f3ca3704892a440af90;hb=c47f3fad07af11210c9cbd65d87964794189065e;hp=9a9164ea292770380548aea3a2c517ac4fbe327d;hpb=6dc18b0e518407bd2a86602bae1e9bbae05da7c8;p=r2c2.git

diff --git a/source/libmarklin/block.cpp b/source/libmarklin/block.cpp
index 9a9164e..e9c170c 100644
--- a/source/libmarklin/block.cpp
+++ b/source/libmarklin/block.cpp
@@ -68,7 +68,7 @@ int Block::get_endpoint_by_link(const Block &other) const
 	return -1;
 }
 
-int Block::traverse(unsigned epi, float *len) const
+unsigned Block::traverse(unsigned epi, float *len) const
 {
 	if(epi>=endpoints.size())
 		throw InvalidParameterValue("Endpoint index out of range");
@@ -93,17 +93,14 @@ int Block::traverse(unsigned epi, float *len) const
 		if(len)
 			*len += track->get_type().get_path_length(cur_path);
 
-		int other_ep = track->traverse(track_ep, cur_path);
-		if(other_ep<0)
-			return -1;
-
+		unsigned other_ep = track->traverse(track_ep, cur_path);
 		for(unsigned i=0; i<endpoints.size(); ++i)
 			if(endpoints[i].track==track && endpoints[i].track_ep==static_cast<unsigned>(other_ep))
 				return i;
 
 		Track *next = track->get_link(other_ep);
-		if(tracks.count(next)==0)
-			return -1;
+		if(!tracks.count(next))
+			throw LogicError("Block traversal strayed out of the block");
 		track_ep = next->get_endpoint_by_link(*track);
 		track = next;
 	}