identify_module: give hint for qualified modules

Signed-off-by: Jean Privat <jean@pryen.org>

diff --git a/src/loader.nit b/src/loader.nit
index 2b6f479..ac07e71 100644 (file)
--- a/src/loader.nit
+++ b/src/loader.nit
@@ -406,6 +406,20 @@ redef class ModelBuilder
                                                end
                                        end
 
+                                       var bests = new BestDistance[String](path.length / 2)
+                                       # We found nothing. But propose something in the package?
+                                       for sg in g.mpackage.mgroups do
+                                               for m in sg.mmodules do
+                                                       var d = path.levenshtein_distance(m.full_name)
+                                                       bests.update(d, m.full_name)
+                                               end
+                                       end
+                                       var last_loader_error = "Error: cannot find module `{path}`."
+                                       if bests.best_items.not_empty then
+                                               last_loader_error += " Did you mean " + bests.best_items.join(", ", " or ") + "?"
+                                       end
+                                       self.last_loader_error = last_loader_error
+                                       return null
                                end
                        end