Promote mixin concept to the abstractmetamodel module.

[nit.git] / src / metamodel / abstractmetamodel.nit

diff --git a/src/metamodel/abstractmetamodel.nit b/src/metamodel/abstractmetamodel.nit
index 878ef46..debc34f 100644 (file)
--- a/src/metamodel/abstractmetamodel.nit
+++ b/src/metamodel/abstractmetamodel.nit
@@ -334,6 +334,19 @@ class MMGlobalClass
        # 1 -> public
        # 3 -> private
        readable writable attr _visibility_level: Int
+
+       # Is the global class a mixin class?
+       # A mixin class inherits all constructors from a superclass
+       meth is_mixin: Bool
+       do
+               return _mixin_of != self
+       end
+
+       # Indicate the superclass the class is a mixin of.
+       # If mixin_of == self then the class is not a mixin
+       # Is two classes have the same mixin_of value, then they both belong to the same mixing group
+       readable writable attr _mixin_of: MMGlobalClass = self
+
 end
 
 # Local classes are classes defined, refined or imported in a module
@@ -579,6 +592,15 @@ class MMGlobalProperty
        # Is the global property a constructor (thus also a method)?
        readable writable attr _is_init: Bool
 
+       # Is the global property a constructor for a given class?
+       meth is_init_for(c: MMLocalClass): Bool
+       do
+               if not is_init then return false
+               var sc = intro.local_class
+               var res = c.che <= sc and c.global.mixin_of == sc.global.mixin_of
+               return res
+       end
+
        # Visibility of the property
        # 1 -> public
        # 2 -> protected