SebastianBergmann\PHPLOC\Analyser::preProcessFile PHP Method

    public function preProcessFile($filename)
    {
        $tokens = token_get_all(file_get_contents($filename));
        $numTokens = count($tokens);
        $namespace = false;
        for ($i = 0; $i < $numTokens; $i++) {
            if (is_string($tokens[$i])) {
                continue;
            }
            switch ($tokens[$i][0]) {
                case T_NAMESPACE:
                    $namespace = $this->getNamespaceName($tokens, $i);
                    break;
                case T_CLASS:
                    if (!$this->isClassDeclaration($tokens, $i)) {
                        continue;
                    }
                    $className = $this->getClassName($namespace, $tokens, $i);
                    if (isset($tokens[$i + 4]) && is_array($tokens[$i + 4]) && $tokens[$i + 4][0] == T_EXTENDS) {
                        $parent = $this->getClassName($namespace, $tokens, $i + 4);
                    } else {
                        $parent = null;
                    }
                    $this->classes[$className] = $parent;
                    break;
            }
        }
    }