X-Git-Url: http://nitlanguage.org

diff --git a/src/model/model.nit b/src/model/model.nit
index eab60f7..f26eb2e 100644
--- a/src/model/model.nit
+++ b/src/model/model.nit
@@ -1977,6 +1977,16 @@ class MMethodDef
 
 	# Is the method definition extern?
 	var is_extern = false is writable
+
+	# An optional constant value returned in functions.
+	#
+	# Only some specific primitife value are accepted by engines.
+	# Is used when there is no better implementation available.
+	#
+	# Currently used only for the implementation of the `--define`
+	# command-line option.
+	# SEE: module `mixin`.
+	var constant_value: nullable Object = null is writable
 end
 
 # A local definition of an attribute