model: introduce MConcern

[nit.git] / src / model / mproject.nit

diff --git a/src/model/mproject.nit b/src/model/mproject.nit
index 4208008..7bd502e 100644 (file)
--- a/src/model/mproject.nit
+++ b/src/model/mproject.nit
@@ -21,7 +21,7 @@ import poset
 
 # A Nit project, thas encompass a product
 class MProject
-       super MEntity
+       super MConcern
 
        # The name of the project
        redef var name: String
@@ -44,11 +44,14 @@ class MProject
                model.mprojects.add(self)
                model.mproject_by_name.add_one(name, self)
        end
+
+       # MProject are always roots of the concerns hierarchy
+       redef fun parent_concern do return null
 end
 
 # A group of modules in a project
 class MGroup
-       super MEntity
+       super MConcern
 
        # The name of the group
        # empty name for a default group in a single-module project
@@ -74,6 +77,9 @@ class MGroup
        # nesting group (see `parent`) is bigger
        var in_nesting: POSetElement[MGroup]
 
+       # Is `self` the root of its project?
+       fun is_root: Bool do return mproject.root == self
+
        # The filepath (usualy a directory) of the group, if any
        var filepath: nullable String writable
 
@@ -89,6 +95,11 @@ class MGroup
                end
        end
 
+       redef fun parent_concern do
+               if not is_root then return parent
+               return mproject
+       end
+
        redef fun to_s do return name
 end