DatabaseQueue: pass playlist object

src/DatabaseCommands.cxx

@@ -92,7 +92,8 @@ handle_match_add(Client *client, int argc, char *argv[], bool fold_case)
 	}
 
 	GError *error = NULL;
-	return findAddIn(client->player_control, "", &filter, &error)
+	return findAddIn(client->playlist, client->player_control,
+			 "", &filter, &error)
 		? COMMAND_RETURN_OK
 		: print_error(client, error);
 }

src/DatabaseQueue.cxx

@@ -27,10 +27,11 @@
 #include <functional>
 
 static bool
-AddToQueue(struct player_control *pc, song &song, GError **error_r)
+AddToQueue(struct playlist &playlist, struct player_control *pc,
+	   song &song, GError **error_r)
 {
 	enum playlist_result result =
-		playlist_append_song(&g_playlist, pc, &song, NULL);
+		playlist_append_song(&playlist, pc, &song, NULL);
 	if (result != PLAYLIST_RESULT_SUCCESS) {
 		g_set_error(error_r, playlist_quark(), result,
 			    "Playlist error");
@@ -41,7 +42,8 @@ AddToQueue(struct player_control *pc, song &song, GError **error_r)
 }
 
 bool
-findAddIn(struct player_control *pc, const char *uri,
+findAddIn(struct playlist &playlist, struct player_control *pc,
+	  const char *uri,
 	  const SongFilter *filter, GError **error_r)
 {
 	const Database *db = GetDatabase(error_r);
@@ -51,6 +53,6 @@ findAddIn(struct player_control *pc, const char *uri,
 	const DatabaseSelection selection(uri, true, filter);
 
 	using namespace std::placeholders;
-	const auto f = std::bind(AddToQueue, pc, _1, _2);
+	const auto f = std::bind(AddToQueue, playlist, pc, _1, _2);
 	return db->Visit(selection, f, error_r);
 }

src/DatabaseQueue.hxx

@@ -24,11 +24,13 @@
 #include "gerror.h"
 
 class SongFilter;
+struct playlist;
 struct player_control;
 
-gcc_nonnull(1,2)
+gcc_nonnull(2,3)
 bool
-findAddIn(struct player_control *pc, const char *name,
+findAddIn(struct playlist &playlist, struct player_control *pc,
+	  const char *name,
 	  const SongFilter *filter, GError **error_r);
 
 #endif

src/QueueCommands.cxx

@@ -70,7 +70,8 @@ handle_add(Client *client, G_GNUC_UNUSED int argc, char *argv[])
 	}
 
 	GError *error = NULL;
-	return findAddIn(client->player_control, uri, nullptr, &error)
+	return findAddIn(client->playlist, client->player_control,
+			 uri, nullptr, &error)
 		? COMMAND_RETURN_OK
 		: print_error(client, error);
 }