Function CheckCommaSpacing

tools/cpplint.py:4522–4555

Checks for horizontal spacing near commas and semicolons. 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)

def CheckCommaSpacing(filename, clean_lines, linenum, error):
    """Checks for horizontal spacing near commas and semicolons.

    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.
    """
    raw = clean_lines.lines_without_raw_strings
    line = clean_lines.elided[linenum]

    # You should always have a space after a comma (either as fn arg or operator)
    #
    # This does not apply when the non-space character following the
    # comma is another comma, since the only time when that happens is
    # for empty macro arguments.
    #
    # We run this check in two passes: first pass on elided lines to
    # verify that lines contain missing whitespaces, second pass on raw
    # lines to confirm that those missing whitespaces are not due to
    # elided comments.
    match = re.search(
        r",[^,\s]", re.sub(r"\b__VA_OPT__\s*\(,\)", "", re.sub(r"\boperator\s*,\s*\(", "F(", line))
    )
    if match and re.search(r",[^,\s]", raw[linenum]):
        error(filename, linenum, "whitespace/comma", 3, "Missing space after ,")

    # You should always have a space after a semicolon
    # except for few corner cases
    # TODO(google): clarify if 'if (1) { return 1;}' is requires one more
    # space after ;
    if re.search(r";[^\s};\\)/]", line):
        error(filename, linenum, "whitespace/semicolon", 3, "Missing space after ;")


def _IsType(clean_lines, nesting_state, expr):