From a013626cf32e8f07be16590e3caa4d5f9839b426 Mon Sep 17 00:00:00 2001
From: Richard Maw <richard.maw@gmail.com>
Date: Thu, 11 Sep 2014 13:08:24 +0000
Subject: FIXUP: Add compatibility methods to Artifact for fields that moved to
 Source

This means we can avoid having to rewrite everything immediately after
the fields moved.
---
 morphlib/artifact.py | 36 +++++++++++++++++++++++++++++++++++-
 morphlib/source.py   |  2 +-
 2 files changed, 36 insertions(+), 2 deletions(-)

diff --git a/morphlib/artifact.py b/morphlib/artifact.py
index aea82357..4fac69c7 100644
--- a/morphlib/artifact.py
+++ b/morphlib/artifact.py
@@ -32,7 +32,8 @@ class Artifact(object):
     def __init__(self, source, name):
         self.source = source
         self.name = name
-        self.dependents = []
+        # TODO: Rename to dependents when callers are changed
+        self.dependent_sources = []
 
     def basename(self):  # pragma: no cover
         return '%s.%s' % (self.source.basename(), str(self.name))
@@ -60,6 +61,39 @@ class Artifact(object):
     def __repr__(self): # pragma: no cover
         return 'Artifact(%s)' % str(self)
 
+    # TODO: Remove after build code stops using me
+    def add_dependency(self, artifact): # pragma: no cover
+        return self.source.add_dependency(artifact)
+    def depends_on(self, artifact): # pragma: no cover
+        return self.source.depends_on(artifact)
+    @property
+    def dependencies(self): # pragma: no cover
+        return self.source.dependencies
+    @property
+    def dependents(self): # pragma: no cover
+        seen = set()
+        res = []
+        for s in self.dependent_sources:
+            for a in s.artifacts.itervalues():
+                if a not in seen:
+                    seen.add(a)
+                    res.append(a)
+        return res
+    @property
+    def cache_id(self): # pragma: no cover
+        return self.source.cache_id
+    @cache_id.setter
+    def cache_id(self, v): # pragma: no cover
+        assert self.source.cache_id is None or v == self.source.cache_id
+        self.source.cache_id = v
+    @property
+    def cache_key(self): # pragma: no cover
+        return self.source.cache_key
+    @cache_key.setter
+    def cache_key(self, v): # pragma: no cover
+        assert (self.source.cache_key is None) or (v == self.source.cache_key)
+        self.source.cache_key = v
+
     def walk(self): # pragma: no cover
         '''Return list of an artifact and its build dependencies.
         
diff --git a/morphlib/source.py b/morphlib/source.py
index 86249452..ae46f0c0 100644
--- a/morphlib/source.py
+++ b/morphlib/source.py
@@ -70,7 +70,7 @@ class Source(object):
     def add_dependency(self, artifact): # pragma: no cover
         if artifact not in self.dependencies:
             self.dependencies.append(artifact)
-        if self not in artifact.dependents:
+        if self not in artifact.dependent_sources:
             artifact.dependent_sources.append(self)
 
     def depends_on(self, artifact): # pragma: no cover
-- 
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