--- /dev/null
+
+"""scons.Node.Alias
+
+Alias nodes.
+
+This creates a hash of global Aliases (dummy targets).
+
+"""
+
+#
+# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 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 3842 2008/12/20 22:59:52 scons"
+
+import string
+import UserDict
+
+import SCons.Errors
+import SCons.Node
+import SCons.Util
+
+class AliasNameSpace(UserDict.UserDict):
+ def Alias(self, name, **kw):
+ if isinstance(name, SCons.Node.Alias.Alias):
+ return name
+ try:
+ a = self[name]
+ except KeyError:
+ a = apply(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 = map(lambda n: n.get_csig(), self.children())
+ return string.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)
projects / senf.git / blobdiff