diff options
Diffstat (limited to 'src/engine/SCons/Node/__init__.py')
| -rw-r--r-- | src/engine/SCons/Node/__init__.py | 51 |
1 files changed, 45 insertions, 6 deletions
diff --git a/src/engine/SCons/Node/__init__.py b/src/engine/SCons/Node/__init__.py index 2a5e5bc..45f5bc7 100644 --- a/src/engine/SCons/Node/__init__.py +++ b/src/engine/SCons/Node/__init__.py @@ -84,9 +84,6 @@ class Node: self.target_scanner = None # explicit scanner from this node's Builder self.env = None self.state = None - self.bsig = None - self.csig = None - self.use_signature = 1 self.precious = None self.found_includes = {} self.includes = None @@ -151,13 +148,13 @@ class Node: def get_parents(node, parent): return node.get_parents() def clear_cache(node, parent): node.implicit = None - node.bsig = None + node.del_bsig() w = Walker(self, get_parents, ignore_cycle, clear_cache) while w.next(): pass # clear out the content signature, since the contents of this # node were presumably just changed: - self.csig = None + self.del_csig() def depends_on(self, nodes): """Does this node depend on any of 'nodes'?""" @@ -217,7 +214,7 @@ class Node: # we need to recalculate the implicit deps, # and the bsig: self.implicit = [] - self.bsig = None + self.del_bsig() for child in self.children(scan=0): self._add_child(self.implicit, @@ -242,9 +239,39 @@ class Node: return self.env = env + def calc_signature(self, calc): + """ + Select and calculate the appropriate build signature for a node. + + self - the node + calc - the signature calculation module + returns - the signature + + This method does not store the signature in the node or + in the .sconsign file. + """ + + if self.builder: + if SCons.Sig.build_signature: + if not hasattr(self, 'bsig'): + self.set_bsig(calc.bsig(self)) + return self.get_bsig() + else: + if not hasattr(self, 'csig'): + self.set_csig(calc.csig(self)) + return self.get_csig() + elif not self.exists(): + return None + else: + if not hasattr(self, 'csig'): + self.set_csig(calc.csig(self)) + return self.get_csig() + def get_bsig(self): """Get the node's build signature (based on the signatures of its dependency files and build information).""" + if not hasattr(self, 'bsig'): + return None return self.bsig def set_bsig(self, bsig): @@ -257,8 +284,15 @@ class Node: .sconsign file or equivalent).""" pass + def del_bsig(self): + """Delete the bsig from this node.""" + if hasattr(self, 'bsig'): + delattr(self, 'bsig') + def get_csig(self): """Get the signature of the node's content.""" + if not hasattr(self, 'csig'): + return None return self.csig def set_csig(self, csig): @@ -270,6 +304,11 @@ class Node: .sconsign file or equivalent).""" pass + def del_csig(self): + """Delete the csig from this node.""" + if hasattr(self, 'csig'): + delattr(self, 'csig') + def get_prevsiginfo(self): """Fetch the previous signature information from the .sconsign entry.""" |