How to use the scons.scons-local-250.SCons.Node.FS.Base function in SCons

self._memo['rentry'] = result
        return result

    def _glob1(self, pattern, ondisk=True, source=False, strings=False):
        return []
    
# Dict that provides a simple backward compatibility
# layer for the Node attributes 'abspath', 'labspath',
# 'path', 'tpath' and 'path_elements'.
# @see Base.__getattr__ above
node_bwcomp = {'abspath' : Base.get_abspath,
               'labspath' : Base.get_labspath,
               'path' : Base.get_internal_path,
               'tpath' : Base.get_tpath,
               'path_elements' : Base.get_path_elements,
               'suffix' : Base.get_suffix}

class Entry(Base):
    """This is the class for generic Node.FS entries--that is, things
    that could be a File or a Dir, but we're just not sure yet.
    Consequently, the methods in this class really exist just to
    transform their associated object into the right class when the
    time comes, and then call the same-named method in the transformed
    class."""

    __slots__ = ['scanner_paths',
                 'cachedir_csig',
                 'cachesig',
                 'repositories',
                 'srcdir',
                 'entries',
                 'searched',

result = dir.Entry(self.name)
                        break
        self._memo['rentry'] = result
        return result

    def _glob1(self, pattern, ondisk=True, source=False, strings=False):
        return []
    
# Dict that provides a simple backward compatibility
# layer for the Node attributes 'abspath', 'labspath',
# 'path', 'tpath' and 'path_elements'.
# @see Base.__getattr__ above
node_bwcomp = {'abspath' : Base.get_abspath,
               'labspath' : Base.get_labspath,
               'path' : Base.get_internal_path,
               'tpath' : Base.get_tpath,
               'path_elements' : Base.get_path_elements,
               'suffix' : Base.get_suffix}

class Entry(Base):
    """This is the class for generic Node.FS entries--that is, things
    that could be a File or a Dir, but we're just not sure yet.
    Consequently, the methods in this class really exist just to
    transform their associated object into the right class when the
    time comes, and then call the same-named method in the transformed
    class."""

    __slots__ = ['scanner_paths',
                 'cachedir_csig',
                 'cachesig',
                 'repositories',
                 'srcdir',

def must_be_same(self, klass):
        if klass is Dir:
            return
        Base.must_be_same(self, klass)

except KeyError:
                    if dir.entry_exists_on_disk(self.name):
                        result = dir.Entry(self.name)
                        break
        self._memo['rentry'] = result
        return result

    def _glob1(self, pattern, ondisk=True, source=False, strings=False):
        return []
    
# Dict that provides a simple backward compatibility
# layer for the Node attributes 'abspath', 'labspath',
# 'path', 'tpath' and 'path_elements'.
# @see Base.__getattr__ above
node_bwcomp = {'abspath' : Base.get_abspath,
               'labspath' : Base.get_labspath,
               'path' : Base.get_internal_path,
               'tpath' : Base.get_tpath,
               'path_elements' : Base.get_path_elements,
               'suffix' : Base.get_suffix}

class Entry(Base):
    """This is the class for generic Node.FS entries--that is, things
    that could be a File or a Dir, but we're just not sure yet.
    Consequently, the methods in this class really exist just to
    transform their associated object into the right class when the
    time comes, and then call the same-named method in the transformed
    class."""

    __slots__ = ['scanner_paths',
                 'cachedir_csig',
                 'cachesig',

def _glob1(self, pattern, ondisk=True, source=False, strings=False):
        return []
    
# Dict that provides a simple backward compatibility
# layer for the Node attributes 'abspath', 'labspath',
# 'path', 'tpath' and 'path_elements'.
# @see Base.__getattr__ above
node_bwcomp = {'abspath' : Base.get_abspath,
               'labspath' : Base.get_labspath,
               'path' : Base.get_internal_path,
               'tpath' : Base.get_tpath,
               'path_elements' : Base.get_path_elements,
               'suffix' : Base.get_suffix}

class Entry(Base):
    """This is the class for generic Node.FS entries--that is, things
    that could be a File or a Dir, but we're just not sure yet.
    Consequently, the methods in this class really exist just to
    transform their associated object into the right class when the
    time comes, and then call the same-named method in the transformed
    class."""

    __slots__ = ['scanner_paths',
                 'cachedir_csig',
                 'cachesig',
                 'repositories',
                 'srcdir',
                 'entries',
                 'searched',
                 '_sconsign',
                 'variant_dirs',

the root directory's lookup_abs() method for the heavy lifting.

        If the path name begins with '#', it is unconditionally
        interpreted relative to the top-level directory of this FS.  '#'
        is treated as a synonym for the top-level SConstruct directory,
        much like '~' is treated as a synonym for the user's home
        directory in a UNIX shell.  So both '#foo' and '#/foo' refer
        to the 'foo' subdirectory underneath the top-level SConstruct
        directory.

        If the path name is relative, then the path is looked up relative
        to the specified directory, or the current directory (self._cwd,
        typically the SConscript directory) if the specified directory
        is None.
        """
        if isinstance(p, Base):
            # It's already a Node.FS object.  Make sure it's the right
            # class and return.
            p.must_be_same(fsclass)
            return p
        # str(p) in case it's something like a proxy object
        p = str(p)

        if not os_sep_is_slash:
            p = p.replace(OS_SEP, '/')

        if p[0:1] == '#':
            # There was an initial '#', so we strip it and override
            # whatever directory they may have specified with the
            # top-level SConstruct directory.
            p = p[1:]
            directory = self.Top

def srcnode(self):
        """Dir has a special need for srcnode()...if we
        have a srcdir attribute set, then that *is* our srcnode."""
        if self.srcdir:
            return self.srcdir
        return Base.srcnode(self)

result = dir.Entry(self.name)
                        break
        self._memo['rentry'] = result
        return result

    def _glob1(self, pattern, ondisk=True, source=False, strings=False):
        return []
    
# Dict that provides a simple backward compatibility
# layer for the Node attributes 'abspath', 'labspath',
# 'path', 'tpath' and 'path_elements'.
# @see Base.__getattr__ above
node_bwcomp = {'abspath' : Base.get_abspath,
               'labspath' : Base.get_labspath,
               'path' : Base.get_internal_path,
               'tpath' : Base.get_tpath,
               'path_elements' : Base.get_path_elements,
               'suffix' : Base.get_suffix}

class Entry(Base):
    """This is the class for generic Node.FS entries--that is, things
    that could be a File or a Dir, but we're just not sure yet.
    Consequently, the methods in this class really exist just to
    transform their associated object into the right class when the
    time comes, and then call the same-named method in the transformed
    class."""

    __slots__ = ['scanner_paths',
                 'cachedir_csig',
                 'cachesig',
                 'repositories',
                 'srcdir',

s = ni.str_to_node(s)
                nodes.append(s)
            setattr(self, nattr, nodes)
    def format(self, names=0):
        result = []
        bkids = self.bsources + self.bdepends + self.bimplicit
        bkidsigs = self.bsourcesigs + self.bdependsigs + self.bimplicitsigs
        for bkid, bkidsig in zip(bkids, bkidsigs):
            result.append(str(bkid) + ': ' +
                          ' '.join(bkidsig.format(names=names)))
        if not hasattr(self,'bact'):
            self.bact = "none"
        result.append('%s [%s]' % (self.bactsig, self.bact))
        return '\n'.join(result)

class File(Base):
    """A class for files in a file system.
    """

    __slots__ = ['scanner_paths',
                 'cachedir_csig',
                 'cachesig',
                 'repositories',
                 'srcdir',
                 'entries',
                 'searched',
                 '_sconsign',
                 'variant_dirs',
                 'root',
                 'dirname',
                 'on_disk_entries',
                 'sccs_dir',

if dir.entry_exists_on_disk(self.name):
                        result = dir.Entry(self.name)
                        break
        self._memo['rentry'] = result
        return result

    def _glob1(self, pattern, ondisk=True, source=False, strings=False):
        return []
    
# Dict that provides a simple backward compatibility
# layer for the Node attributes 'abspath', 'labspath',
# 'path', 'tpath' and 'path_elements'.
# @see Base.__getattr__ above
node_bwcomp = {'abspath' : Base.get_abspath,
               'labspath' : Base.get_labspath,
               'path' : Base.get_internal_path,
               'tpath' : Base.get_tpath,
               'path_elements' : Base.get_path_elements,
               'suffix' : Base.get_suffix}

class Entry(Base):
    """This is the class for generic Node.FS entries--that is, things
    that could be a File or a Dir, but we're just not sure yet.
    Consequently, the methods in this class really exist just to
    transform their associated object into the right class when the
    time comes, and then call the same-named method in the transformed
    class."""

    __slots__ = ['scanner_paths',
                 'cachedir_csig',
                 'cachesig',
                 'repositories',