X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Flibmarklin%2Flayout.cpp;h=f1bc3211bab00b5a8e6d4403f8d0ad3607694834;hb=2bb6ce8ada216c0b2caa48f4639d03f2c581098e;hp=f89b78335d30f0f720778ccbcd4b3822fc8defb8;hpb=f79b3fd58999a73a4a28663b46fdd96c58167a18;p=r2c2.git

diff --git a/source/libmarklin/layout.cpp b/source/libmarklin/layout.cpp
index f89b783..f1bc321 100644
--- a/source/libmarklin/layout.cpp
+++ b/source/libmarklin/layout.cpp
@@ -95,15 +95,6 @@ Block &Layout::get_block(unsigned id) const
 	throw KeyError("Unknown block", lexical_cast(id));
 }
 
-Block &Layout::get_block_by_track(Track &t) const
-{
-	for(set<Block *>::const_iterator i=blocks.begin(); i!=blocks.end(); ++i)
-		if((*i)->get_tracks().count(&t))
-			return **i;
-
-	throw InvalidParameterValue("No block found for track");
-}
-
 void Layout::create_blocks()
 {
 	set<Track *> used_tracks;
@@ -128,18 +119,19 @@ void Layout::create_blocks()
 
 void Layout::create_blocks(Track &track)
 {
+	/* Must collect the blocks in a set first while all tracks are still
+	guaranteed to have blocks and to avoid duplicate deletes */
+	set<Block *> del_blocks;
+
+	del_blocks.insert(&track.get_block());
+
 	const vector<Track *> &links = track.get_links();
-	for(set<Block *>::iterator i=blocks.begin(); i!=blocks.end();)
-	{
-		bool del = (*i)->get_tracks().count(&track);
-		for(vector<Track *>::const_iterator j=links.begin(); (!del && j!=links.end()); ++j)
-			del = (*i)->get_tracks().count(*j);
-
-		if(del)
-			delete *i++;
-		else
-			++i;
-	}
+	for(vector<Track *>::const_iterator i=links.begin(); i!=links.end(); ++i)
+		if(*i)
+			del_blocks.insert(&(*i)->get_block());
+
+	for(set<Block *>::iterator i=del_blocks.begin(); i!=del_blocks.end(); ++i)
+		delete *i;
 
 	create_blocks();
 }