function handlePreprocessorConditions()

in gen_stub.php [1215:1241]

• 26 lines of code
• 11 McCabe index (conditional complexity)

function handlePreprocessorConditions(array &$conds, Stmt $stmt): ?string {
    foreach ($stmt->getComments() as $comment) {
        $text = trim($comment->getText());
        if (preg_match('/^#\s*if\s+(.+)$/', $text, $matches)) {
            $conds[] = $matches[1];
        } else if (preg_match('/^#\s*ifdef\s+(.+)$/', $text, $matches)) {
            $conds[] = "defined($matches[1])";
        } else if (preg_match('/^#\s*ifndef\s+(.+)$/', $text, $matches)) {
            $conds[] = "!defined($matches[1])";
        } else if (preg_match('/^#\s*else$/', $text)) {
            if (empty($conds)) {
                throw new Exception("Encountered else without corresponding #if");
            }
            $cond = array_pop($conds);
            $conds[] = "!($cond)";
        } else if (preg_match('/^#\s*endif$/', $text)) {
            if (empty($conds)) {
                throw new Exception("Encountered #endif without corresponding #if");
            }
            array_pop($conds);
        } else if ($text[0] === '#') {
            throw new Exception("Unrecognized preprocessor directive \"$text\"");
        }
    }

    return empty($conds) ? null : implode(' && ', $conds);
}