Initial work on integrate the build order work into builder.

1 files changed, 59 insertions, 0 deletions

diff --git a/morphlib/blobs.py b/morphlib/blobs.py
new file mode 100644
index 00000000..70cd1f90
--- /dev/null
+++ b/morphlib/blobs.py
@@ -0,0 +1,59 @@
+# Copyright (C) 2012  Codethink Limited
+# 
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; version 2 of the License.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+
+class Blob(object):
+
+    def __init__(self, parent, morph):
+        self.parent = parent
+        self.morph = morph
+        self.dependencies = set()
+        self.dependents = set()
+
+    def add_dependency(self, other):
+        self.dependencies.add(other)
+        other.dependents.add(self)
+
+    def remove_dependency(self, other):
+        self.dependencies.remove(other)
+        other.dependents.remove(self)
+
+    def depends_on(self, other):
+        return other in self.dependencies
+
+    @property
+    def chunks(self):
+        if self.morph.chunks:
+            return self.morph.chunks
+        else:
+            return { self.morph.name: ['.'] }
+
+    def __str__(self):
+        return str(self.morph)
+
+
+class Chunk(Blob):
+
+    pass
+
+
+class Stratum(Blob):
+
+    pass
+
+
+class System(Blob):
+
+    pass