protected function func(&$func)
{
$s = $this->seek();
if ($this->keyword($name, false) && $this->literal('(')) {
if ($name === 'alpha' && $this->argumentList($args)) {
$func = [Type::T_FUNCTION, $name, [Type::T_STRING, '', $args]];
return true;
}
if ($name !== 'expression' && !preg_match('/^(-[a-z]+-)?calc$/', $name)) {
$ss = $this->seek();
if ($this->argValues($args) && $this->literal(')')) {
$func = [Type::T_FUNCTION_CALL, $name, $args];
return true;
}
$this->seek($ss);
}
if (($this->openString(')', $str, '(') || true) && $this->literal(')')) {
$args = [];
if (!empty($str)) {
$args[] = [null, [Type::T_STRING, '', [$str]]];
}
$func = [Type::T_FUNCTION_CALL, $name, $args];
return true;
}
}
$this->seek($s);
return false;
}