modelbuilder: promote `get_mclass_by_name` from typing

[nit.git] / src / modelbuilder_base.nit

diff --git a/src/modelbuilder_base.nit b/src/modelbuilder_base.nit
index f01fbd8..93423df 100644 (file)
--- a/src/modelbuilder_base.nit
+++ b/src/modelbuilder_base.nit
@@ -81,6 +81,16 @@ class ModelBuilder
                return res
        end
 
+       # Like `try_get_mclass_by_name` but display an error message when the class is not found
+       fun get_mclass_by_name(node: ANode, mmodule: MModule, name: String): nullable MClass
+       do
+               var mclass = try_get_mclass_by_name(node, mmodule, name)
+               if mclass == null then
+                       error(node, "Type Error: missing primitive class `{name}'.")
+               end
+               return mclass
+       end
+
        # Return a property named `name` on the type `mtype` visible in the module `mmodule`.
        # Visibility in modules is correctly handled.
        # Protected properties are returned (it is up to the caller to check and reject protected properties).