public function __construct()

in prod/php/ElasticOTel/Util/WildcardMatcher.php [43:73]
29 lines of code
7 McCabe index (conditional complexity)

    public function __construct(string $expr)
    {
        if (!isset(self::$wildcardLen)) {
            self::$wildcardLen = strlen(self::WILDCARD);
        }

        $this->isCaseSensitive = TextUtil::isPrefixOf(self::CASE_SENSITIVE_PREFIX, $expr);
        $exprPos = $this->isCaseSensitive ? strlen(self::CASE_SENSITIVE_PREFIX) : 0;
        $exprLen = strlen($expr);
        $this->literalParts = [];
        $this->startsWithWildcard = false;
        $lastPartWasWildcard = false;
        while ($exprPos < $exprLen) {
            $nextWildcardPos = strpos($expr, self::WILDCARD, $exprPos);
            if ($nextWildcardPos === $exprPos) {
                $lastPartWasWildcard = true;
                if ($this->literalParts === []) {
                    $this->startsWithWildcard = true;
                }
                $exprPos += self::$wildcardLen;
                continue;
            }

            $lastPartWasWildcard = false;
            $literalPartEndPos = ($nextWildcardPos === false) ? $exprLen : $nextWildcardPos;
            $literalPartLen = $literalPartEndPos - $exprPos;
            $this->literalParts[] = substr($expr, offset: $exprPos, length: $literalPartLen);
            $exprPos += $literalPartLen;
        }
        $this->endsWithWildcard = $lastPartWasWildcard;
    }