diff options
Diffstat (limited to 'src/engine/SCons/Node/Alias.py')
| -rw-r--r-- | src/engine/SCons/Node/Alias.py | 38 |
1 files changed, 35 insertions, 3 deletions
diff --git a/src/engine/SCons/Node/Alias.py b/src/engine/SCons/Node/Alias.py index 6d4440b..15de664 100644 --- a/src/engine/SCons/Node/Alias.py +++ b/src/engine/SCons/Node/Alias.py @@ -57,10 +57,13 @@ class AliasNameSpace(UserDict.UserDict): return None class AliasNodeInfo(SCons.Node.NodeInfoBase): - pass + current_version_id = 1 + field_list = ['csig'] + def str_to_node(self, s): + return default_ans.Alias(s) class AliasBuildInfo(SCons.Node.BuildInfoBase): - pass + current_version_id = 1 class Alias(SCons.Node.Node): @@ -74,8 +77,11 @@ class Alias(SCons.Node.Node): def __str__(self): return self.name + def make_ready(self): + self.get_csig() + really_build = SCons.Node.Node.build - current = SCons.Node.Node.children_are_up_to_date + is_up_to_date = SCons.Node.Node.children_are_up_to_date def is_under(self, dir): # Make Alias nodes get built regardless of @@ -97,6 +103,13 @@ class Alias(SCons.Node.Node): # # + def changed_since_last_build(self, target, prev_ni): + cur_csig = self.get_csig() + try: + return cur_csig != prev_ni.csig + except AttributeError: + return 1 + def build(self): """A "builder" for aliases.""" pass @@ -107,6 +120,25 @@ class Alias(SCons.Node.Node): self.reset_executor() self.build = self.really_build + def get_csig(self): + """ + Generate a node's content signature, the digested signature + of its content. + + node - the node + cache - alternate node to use for the signature cache + returns - the content signature + """ + try: + return self.ninfo.csig + except AttributeError: + pass + + contents = self.get_contents() + csig = SCons.Util.MD5signature(contents) + self.get_ninfo().csig = csig + return csig + default_ans = AliasNameSpace() SCons.Node.arg2nodes_lookups.append(default_ans.lookup) |