def CheckEnd()

in cpplint.py [0:0]
21 lines of code
8 McCabe index (conditional complexity)

    def CheckEnd(self, filename, clean_lines, linenum, error):
        """Check end of namespace comments."""
        line = clean_lines.raw_lines[linenum]

        # Check how many lines is enclosed in this namespace.  Don't issue
        # warning for missing namespace comments if there aren't enough
        # lines.  However, do apply checks if there is already an end of
        # namespace comment and it's incorrect.
        #
        # TODO(unknown): We always want to check end of namespace comments
        # if a namespace is large, but sometimes we also want to apply the
        # check if a short namespace contained nontrivial things (something
        # other than forward declarations).  There is currently no logic on
        # deciding what these nontrivial things are, so this check is
        # triggered by namespace size only, which works most of the time.
        if (linenum - self.starting_linenum < 10
                and not Match(r'^\s*};*\s*(//|/\*).*\bnamespace\b', line)):
            return

        # Look for matching comment at end of namespace.
        #
        # Note that we accept C style "/* */" comments for terminating
        # namespaces, so that code that terminate namespaces inside
        # preprocessor macros can be cpplint clean.
        #
        # We also accept stuff like "// end of namespace <name>." with the
        # period at the end.
        #
        # Besides these, we don't accept anything else, otherwise we might
        # get false negatives when existing comment is a substring of the
        # expected namespace.
        if self.name:
            # Named namespace
            if not Match((r'^\s*};*\s*(//|/\*).*\bnamespace\s+' +
                          re.escape(self.name) + r'[\*/\.\\\s]*$'),
                         line):
                error(filename, linenum, 'readability/namespace', 5,
                      'Namespace should be terminated with "// namespace %s"' %
                      self.name)
        else:
            # Anonymous namespace
            if not Match(r'^\s*};*\s*(//|/\*).*\bnamespace[\*/\.\\\s]*$', line):
                # If "// namespace anonymous" or "// anonymous namespace (more text)",
                # mention "// anonymous namespace" as an acceptable form
                if Match(r'^\s*}.*\b(namespace anonymous|anonymous namespace)\b', line):
                    error(filename, linenum, 'readability/namespace', 5,
                          'Anonymous namespace should be terminated with "// namespace"'
                          ' or "// anonymous namespace"')
                else:
                    error(filename, linenum, 'readability/namespace', 5,
                          'Anonymous namespace should be terminated with "// namespace"')