Exakat\Tasks\Load::processFunction PHP Method

    private function processFunction()
    {
        $current = $this->id;
        $functionId = $this->addAtom('Function');
        $this->toggleContext(self::CONTEXT_FUNCTION);
        $fullcode = array();
        foreach ($this->optionsTokens as $name => $optionId) {
            $this->addLink($functionId, $optionId, strtoupper($name));
            $fullcode[] = $this->atoms[$optionId]['fullcode'];
        }
        $this->optionsTokens = array();
        if ($this->tokens[$this->id + 1][0] === T_AND) {
            ++$this->id;
            $this->setAtom($functionId, array('reference' => true));
        } else {
            $this->setAtom($functionId, array('reference' => false));
        }
        if ($this->tokens[$this->id + 1][0] === T_OPEN_PARENTHESIS) {
            $isClosure = true;
            $nameId = $this->addAtomVoid();
        } else {
            $isClosure = false;
            $nameId = $this->processNextAsIdentifier();
        }
        $this->addLink($functionId, $nameId, 'NAME');
        // Process arguments
        ++$this->id;
        // Skip arguments
        $argumentsId = $this->processArguments(array(T_CLOSE_PARENTHESIS), true);
        $this->addLink($functionId, $argumentsId, 'ARGUMENTS');
        // Process use
        if ($this->tokens[$this->id + 1][0] === T_USE) {
            ++$this->id;
            // Skip use
            ++$this->id;
            // Skip (
            $useId = $this->processArguments();
            $this->addLink($functionId, $useId, 'USE');
        }
        // Process return type
        if ($this->tokens[$this->id + 1][0] === T_COLON) {
            ++$this->id;
            if ($this->tokens[$this->id + 1][0] === T_QUESTION) {
                $nullableId = $this->processNextAsIdentifier();
                $this->addLink($functionId, $nullableId, 'NULLABLE');
            }
            $returnTypeId = $this->processOneNsname();
            $this->addLink($functionId, $returnTypeId, 'RETURNTYPE');
        }
        // Process block
        if ($this->tokens[$this->id + 1][0] === T_SEMICOLON) {
            $voidId = $this->addAtomVoid();
            $this->addLink($functionId, $voidId, 'BLOCK');
            ++$this->id;
            // skip the next ;
        } else {
            $blockId = $this->processFollowingBlock(array(T_CLOSE_CURLY));
            $this->popExpression();
            $this->addLink($functionId, $blockId, 'BLOCK');
        }
        if (!empty($fullcode)) {
            $fullcode[] = '';
        }
        if ($isClosure === false && !$this->isContext(self::CONTEXT_CLASS) && !$this->isContext(self::CONTEXT_TRAIT) && !$this->isContext(self::CONTEXT_INTERFACE)) {
            $fullnspath = $this->getFullnspath($nameId);
            $this->addDefinition('function', $fullnspath, $functionId);
        } else {
            $fullnspath = '';
        }
        $this->setAtom($functionId, array('code' => $this->atoms[$nameId]['fullcode'], 'fullcode' => implode(' ', $fullcode) . $this->tokens[$current][1] . ' ' . ($this->atoms[$functionId]['reference'] ? '&' : '') . ($this->atoms[$nameId]['atom'] === 'Void' ? '' : $this->atoms[$nameId]['fullcode']) . '(' . $this->atoms[$argumentsId]['fullcode'] . ')' . (isset($useId) ? ' use (' . $this->atoms[$useId]['fullcode'] . ')' : '') . (isset($returnTypeId) ? ' : ' . (isset($nullableId) ? '?' : '') . $this->atoms[$returnTypeId]['fullcode'] : '') . (isset($blockId) ? self::FULLCODE_BLOCK : ' ;'), 'line' => $this->tokens[$current][2], 'token' => $this->getToken($this->tokens[$current][0]), 'fullnspath' => $fullnspath));
        $this->pushExpression($functionId);
        if ($this->atoms[$nameId]['atom'] !== 'Void') {
            $this->processSemicolon();
        }
        if (!$this->isContext(self::CONTEXT_NOSEQUENCE) && $this->tokens[$this->id + 1][0] === T_CLOSE_TAG) {
            $this->processSemicolon();
        }
        $this->toggleContext(self::CONTEXT_FUNCTION);
        return $functionId;
    }