Function FlagCxx11Features

steps/cpplint.py:6393–6441

Flag those c++11 features that we only allow in certain places. Args: filename: The name of the current file. clean_lines: A CleansedLines instance containing the file. linenum: The number of the line to check. error: The function to call with any errors found.

(filename, clean_lines, linenum, error)

      check_fn(filename, clean_lines, line, error)

def FlagCxx11Features(filename, clean_lines, linenum, error):
  """Flag those c++11 features that we only allow in certain places.

  Args:
    filename: The name of the current file.
    clean_lines: A CleansedLines instance containing the file.
    linenum: The number of the line to check.
    error: The function to call with any errors found.
  """
  line = clean_lines.elided[linenum]

  include = Match(r'\s*#\s*include\s+[<"]([^<"]+)[">]', line)

  # Flag unapproved C++ TR1 headers.
  if include and include.group(1).startswith('tr1/'):
    error(filename, linenum, 'build/c++tr1', 5,
          ('C++ TR1 headers such as <%s> are unapproved.') % include.group(1))

  # Flag unapproved C++11 headers.
  if include and include.group(1) in ('cfenv',
                                      'condition_variable',
                                      'fenv.h',
                                      'future',
                                      'thread',
                                      'chrono',
                                      'ratio',
                                      'regex',
                                      'system_error',
                                     ):
    error(filename, linenum, 'build/c++11', 5,
          ('<%s> is an unapproved C++11 header.') % include.group(1))

  # The only place where we need to worry about C++11 keywords and library
  # features in preprocessor directives is in macro definitions.
  if Match(r'\s*#', line) and not Match(r'\s*#\s*define\b', line): return

  # These are classes and free functions.  The classes are always
  # mentioned as std::*, but we only catch the free functions if
  # they're not found by ADL.  They're alphabetical by header.
  for top_name in (
      # type_traits
      'alignment_of',
      'aligned_union',
      ):
    if Search(r'\bstd::%s\b' % top_name, line):
      error(filename, linenum, 'build/c++11', 5,
            ('std::%s is an unapproved C++11 class or function.  Send c-style '
             'an example of where it would make your code more readable, and '
             'they may let you use it.') % top_name)


def FlagCxx14Features(filename, clean_lines, linenum, error):