def should_rebuild_dependency(self, dep: Dependency) -> bool:
stamp_path = self.fs_layout.get_build_stamp_path_for_dependency(
dep, self.build_type)
old_build_stamp = None
if os.path.exists(stamp_path):
with open(stamp_path, 'rt') as inp:
old_build_stamp = inp.read()
new_build_stamp = self.get_build_stamp_for_dependency(dep)
if dep.dir_name is not None:
src_dir = self.fs_layout.get_source_path(dep)
if not os.path.exists(src_dir):
log("Have to rebuild %s (%s): source dir %s does not exist",
dep.name, self.build_type, src_dir)
return True
if old_build_stamp == new_build_stamp:
log("Not rebuilding %s (%s) -- nothing changed.", dep.name,
self.build_type)
return False
else:
log("Have to rebuild %s (%s):", dep.name, self.build_type)
log("Old build stamp for %s (from %s):\n%s", dep.name, stamp_path,
indent_lines(old_build_stamp))
log("New build stamp for %s:\n%s", dep.name,
indent_lines(new_build_stamp))
return True
def save_build_stamp_for_dependency(self, dep: Dependency) -> None:
stamp = self.get_build_stamp_for_dependency(dep)
stamp_path = self.fs_layout.get_build_stamp_path_for_dependency(dep, self.build_type)
log("Saving new build stamp to '%s':\n%s", stamp_path, indent_lines(stamp))
with open(stamp_path, "wt") as out:
out.write(stamp)