Function _parse_extras_list

tools/gyp/pylib/packaging/_parser.py:178–202

extras_list = identifier (wsp* ',' wsp* identifier)*

(tokenizer: Tokenizer)

def _parse_extras_list(tokenizer: Tokenizer) -> List[str]:
    """
    extras_list = identifier (wsp* ',' wsp* identifier)*
    """
    extras: List[str] = []

    if not tokenizer.check("IDENTIFIER"):
        return extras

    extras.append(tokenizer.read().text)

    while True:
        tokenizer.consume("WS")
        if tokenizer.check("IDENTIFIER", peek=True):
            tokenizer.raise_syntax_error("Expected comma between extra names")
        elif not tokenizer.check("COMMA"):
            break

        tokenizer.read()
        tokenizer.consume("WS")

        extra_token = tokenizer.expect("IDENTIFIER", expected="extra name after comma")
        extras.append(extra_token.text)

    return extras


def _parse_specifier(tokenizer: Tokenizer) -> str: