Add a genstring() method to the ListAction class.

2 files changed, 11 insertions, 4 deletions

diff --git a/src/engine/SCons/Action.py b/src/engine/SCons/Action.py
index 5f89cc2..3b62702 100644
--- a/src/engine/SCons/Action.py
+++ b/src/engine/SCons/Action.py
@@ -575,6 +575,12 @@ class ListAction(ActionBase):
             return Action(x)
         self.list = map(list_of_actions, list)
 
+    def genstring(self, target, source, env):
+        return string.join(map(lambda a, t=target, s=source, e=env:
+                                  a.genstring(t, s, e),
+                               self.list),
+                           '\n')
+
     def __str__(self):
         return string.join(map(str, self.list), '\n')
     
diff --git a/src/engine/SCons/ActionTests.py b/src/engine/SCons/ActionTests.py
index e996f61..74812df 100644
--- a/src/engine/SCons/ActionTests.py
+++ b/src/engine/SCons/ActionTests.py
@@ -1408,11 +1408,12 @@ class ListActionTestCase(unittest.TestCase):
         """
         def f(target,source,env):
             pass
-        def g(target,source,env):
-            pass
+        def g(target,source,env,for_signature):
+            return 'generated %s %s' % (target[0], source[0])
+        g = SCons.Action.CommandGenerator(g)
         a = SCons.Action.ListAction([f, g, "XXX", f])
-        s = a.genstring([], [], Environment())
-        assert s == "f(target, source, env)\ng(target, source, env)\nXXX\nf(target, source, env)", s
+        s = a.genstring(['foo.x'], ['bar.y'], Environment())
+        assert s == "f(target, source, env)\ngenerated foo.x bar.y\nXXX\nf(target, source, env)", s
 
     def test_execute(self):
         """Test executing a list of subsidiary Actions