diff options
author | Adam Kocoloski <adam@cloudant.com> | 2010-08-23 13:51:50 -0400 |
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committer | Adam Kocoloski <adam@cloudant.com> | 2010-08-23 13:51:50 -0400 |
commit | 96a9fa9101e9ed50149d284ff32c361084223fa4 (patch) | |
tree | 51f7c69596df29a26beaf85a8f2376e271ade366 /couchjs/scons/scons-local-2.0.1/SCons/Node/Alias.py | |
parent | dd586292bdb6b6ea16b70351c2ca4d20793ac772 (diff) |
consolidate all couchjs stuff in one subdir
Diffstat (limited to 'couchjs/scons/scons-local-2.0.1/SCons/Node/Alias.py')
-rw-r--r-- | couchjs/scons/scons-local-2.0.1/SCons/Node/Alias.py | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/couchjs/scons/scons-local-2.0.1/SCons/Node/Alias.py b/couchjs/scons/scons-local-2.0.1/SCons/Node/Alias.py new file mode 100644 index 00000000..c0f3ecee --- /dev/null +++ b/couchjs/scons/scons-local-2.0.1/SCons/Node/Alias.py @@ -0,0 +1,152 @@ + +"""scons.Node.Alias + +Alias nodes. + +This creates a hash of global Aliases (dummy targets). + +""" + +# +# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 The SCons Foundation +# +# Permission is hereby granted, free of charge, to any person obtaining +# a copy of this software and associated documentation files (the +# "Software"), to deal in the Software without restriction, including +# without limitation the rights to use, copy, modify, merge, publish, +# distribute, sublicense, and/or sell copies of the Software, and to +# permit persons to whom the Software is furnished to do so, subject to +# the following conditions: +# +# The above copyright notice and this permission notice shall be included +# in all copies or substantial portions of the Software. +# +# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY +# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE +# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE +# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +# + +__revision__ = "src/engine/SCons/Node/Alias.py 5134 2010/08/16 23:02:40 bdeegan" + +import collections + +import SCons.Errors +import SCons.Node +import SCons.Util + +class AliasNameSpace(collections.UserDict): + def Alias(self, name, **kw): + if isinstance(name, SCons.Node.Alias.Alias): + return name + try: + a = self[name] + except KeyError: + a = SCons.Node.Alias.Alias(name, **kw) + self[name] = a + return a + + def lookup(self, name, **kw): + try: + return self[name] + except KeyError: + return None + +class AliasNodeInfo(SCons.Node.NodeInfoBase): + current_version_id = 1 + field_list = ['csig'] + def str_to_node(self, s): + return default_ans.Alias(s) + +class AliasBuildInfo(SCons.Node.BuildInfoBase): + current_version_id = 1 + +class Alias(SCons.Node.Node): + + NodeInfo = AliasNodeInfo + BuildInfo = AliasBuildInfo + + def __init__(self, name): + SCons.Node.Node.__init__(self) + self.name = name + + def str_for_display(self): + return '"' + self.__str__() + '"' + + def __str__(self): + return self.name + + def make_ready(self): + self.get_csig() + + really_build = SCons.Node.Node.build + is_up_to_date = SCons.Node.Node.children_are_up_to_date + + def is_under(self, dir): + # Make Alias nodes get built regardless of + # what directory scons was run from. Alias nodes + # are outside the filesystem: + return 1 + + def get_contents(self): + """The contents of an alias is the concatenation + of the content signatures of all its sources.""" + childsigs = [n.get_csig() for n in self.children()] + return ''.join(childsigs) + + def sconsign(self): + """An Alias is not recorded in .sconsign files""" + pass + + # + # + # + + 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 + + def convert(self): + try: del self.builder + except AttributeError: pass + 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) + +# Local Variables: +# tab-width:4 +# indent-tabs-mode:nil +# End: +# vim: set expandtab tabstop=4 shiftwidth=4: |