queue/PlaylistTag: throw PlaylistError on error

src/command/TagCommands.cxx

@@ -41,11 +41,7 @@ handle_addtagid(Client &client, Request args, Response &r)
 
 	const char *const value = args[2];
 
-	Error error;
-	if (!client.partition.playlist.AddSongIdTag(song_id, tag_type, value,
-						    error))
-		return print_error(r, error);
-
+	client.partition.playlist.AddSongIdTag(song_id, tag_type, value);
 	return CommandResult::OK;
 }
 
@@ -65,10 +61,6 @@ handle_cleartagid(Client &client, Request args, Response &r)
 		}
 	}
 
-	Error error;
-	if (!client.partition.playlist.ClearSongIdTag(song_id, tag_type,
-						      error))
-		return print_error(r, error);
-
+	client.partition.playlist.ClearSongIdTag(song_id, tag_type);
 	return CommandResult::OK;
 }

src/queue/Playlist.hxx

@@ -258,9 +258,8 @@ public:
 			    SongTime start, SongTime end,
 			    Error &error);
 
-	bool AddSongIdTag(unsigned id, TagType tag_type, const char *value,
-			  Error &error);
-	bool ClearSongIdTag(unsigned id, TagType tag_type, Error &error);
+	void AddSongIdTag(unsigned id, TagType tag_type, const char *value);
+	void ClearSongIdTag(unsigned id, TagType tag_type);
 
 	void Stop(PlayerControl &pc);
 

src/queue/PlaylistTag.cxx

@@ -29,25 +29,18 @@
 #include "DetachedSong.hxx"
 #include "tag/Tag.hxx"
 #include "tag/TagBuilder.hxx"
-#include "util/Error.hxx"
 
-bool
-playlist::AddSongIdTag(unsigned id, TagType tag_type, const char *value,
-		       Error &error)
+void
+playlist::AddSongIdTag(unsigned id, TagType tag_type, const char *value)
 {
 	const int position = queue.IdToPosition(id);
-	if (position < 0) {
-		error.Set(playlist_domain, int(PlaylistResult::NO_SUCH_SONG),
-			  "No such song");
-		return false;
-	}
+	if (position < 0)
+		throw PlaylistError::NoSuchSong();
 
 	DetachedSong &song = queue.Get(position);
-	if (song.IsFile()) {
-		error.Set(playlist_domain, int(PlaylistResult::DENIED),
-			  "Cannot edit tags of local file");
-		return false;
-	}
+	if (song.IsFile())
+		throw PlaylistError(PlaylistResult::DENIED,
+				    "Cannot edit tags of local file");
 
 	{
 		TagBuilder tag(std::move(song.WritableTag()));
@@ -57,26 +50,19 @@ playlist::AddSongIdTag(unsigned id, TagType tag_type, const char *value,
 
 	queue.ModifyAtPosition(position);
 	OnModified();
-	return true;
 }
 
-bool
-playlist::ClearSongIdTag(unsigned id, TagType tag_type,
-			 Error &error)
+void
+playlist::ClearSongIdTag(unsigned id, TagType tag_type)
 {
 	const int position = queue.IdToPosition(id);
-	if (position < 0) {
-		error.Set(playlist_domain, int(PlaylistResult::NO_SUCH_SONG),
-			  "No such song");
-		return false;
-	}
+	if (position < 0)
+		throw PlaylistError::NoSuchSong();
 
 	DetachedSong &song = queue.Get(position);
-	if (song.IsFile()) {
-		error.Set(playlist_domain, int(PlaylistResult::DENIED),
-			  "Cannot edit tags of local file");
-		return false;
-	}
+	if (song.IsFile())
+		throw PlaylistError(PlaylistResult::DENIED,
+				    "Cannot edit tags of local file");
 
 	{
 		TagBuilder tag(std::move(song.WritableTag()));
@@ -89,5 +75,4 @@ playlist::ClearSongIdTag(unsigned id, TagType tag_type,
 
 	queue.ModifyAtPosition(position);
 	OnModified();
-	return true;
 }