FS.py 文件源码

def __init__(self, name, directory, fs):
        """Initialize a generic Node.FS.Base object.

        Call the superclass initialization, take care of setting up
        our relative and absolute paths, identify our parent
        directory, and indicate that this node should use
        signatures."""
        if SCons.Debug.track_instances: logInstanceCreation(self, 'Node.FS.Base')
        SCons.Node.Node.__init__(self)

        # Filenames and paths are probably reused and are intern'ed to
        # save some memory.

        #: Filename with extension as it was specified when the object was
        #: created; to obtain filesystem path, use Python str() function
        self.name = SCons.Util.silent_intern(name)
        self.fs = fs #: Reference to parent Node.FS object

        assert directory, "A directory must be provided"

        self._abspath = None
        self._labspath = None
        self._path = None
        self._tpath = None
        self._path_elements = None

        self.dir = directory
        self.cwd = None # will hold the SConscript directory for target nodes
        self.duplicate = directory.duplicate
        self.changed_since_last_build = 2
        self._func_sconsign = 0
        self._func_exists = 2
        self._func_rexists = 2
        self._func_get_contents = 0
        self._func_target_from_source = 1
        self.store_info = 1