LightnCandy\Runtime::sec PHP Метод

    public static function sec($cx, $v, $bp, $in, $each, $cb, $else = null)
    {
        $push = $in !== $v || $each;
        $isAry = is_array($v) || $v instanceof \ArrayObject;
        $isTrav = $v instanceof \Traversable;
        $loop = $each;
        $keys = null;
        $last = null;
        $isObj = false;
        if ($isAry && $else !== null && count($v) === 0) {
            $ret = $else($cx, $in);
            return $ret;
        }
        // #var, detect input type is object or not
        if (!$loop && $isAry) {
            $keys = array_keys($v);
            $loop = count(array_diff_key($v, array_keys($keys))) == 0;
            $isObj = !$loop;
        }
        if ($loop && $isAry || $isTrav) {
            if ($each && !$isTrav) {
                // Detect input type is object or not when never done once
                if ($keys == null) {
                    $keys = array_keys($v);
                    $isObj = count(array_diff_key($v, array_keys($keys))) > 0;
                }
            }
            $ret = array();
            if ($push) {
                $cx['scopes'][] = $in;
            }
            $i = 0;
            if ($cx['flags']['spvar']) {
                $old_spvar = $cx['sp_vars'];
                $cx['sp_vars'] = array_merge(array('root' => $old_spvar['root']), $old_spvar, array('_parent' => $old_spvar));
                if (!$isTrav) {
                    $last = count($keys) - 1;
                }
            }
            $isSparceArray = $isObj && count(array_filter(array_keys($v), 'is_string')) == 0;
            foreach ($v as $index => $raw) {
                if ($cx['flags']['spvar']) {
                    $cx['sp_vars']['first'] = $i === 0;
                    $cx['sp_vars']['last'] = $i == $last;
                    $cx['sp_vars']['key'] = $index;
                    $cx['sp_vars']['index'] = $isSparceArray ? $index : $i;
                    $i++;
                }
                if (isset($bp[0])) {
                    $raw = static::m($cx, $raw, array($bp[0] => $raw));
                }
                if (isset($bp[1])) {
                    $raw = static::m($cx, $raw, array($bp[1] => $cx['sp_vars']['index']));
                }
                $ret[] = $cb($cx, $raw);
            }
            if ($cx['flags']['spvar']) {
                if ($isObj) {
                    unset($cx['sp_vars']['key']);
                } else {
                    unset($cx['sp_vars']['last']);
                }
                unset($cx['sp_vars']['index']);
                unset($cx['sp_vars']['first']);
                $cx['sp_vars'] = $old_spvar;
            }
            if ($push) {
                array_pop($cx['scopes']);
            }
            return join('', $ret);
        }
        if ($each) {
            if ($else !== null) {
                $ret = $else($cx, $v);
                return $ret;
            }
            return '';
        }
        if ($isAry) {
            if ($push) {
                $cx['scopes'][] = $in;
            }
            $ret = $cb($cx, $v);
            if ($push) {
                array_pop($cx['scopes']);
            }
            return $ret;
        }
        if ($v === true) {
            return $cb($cx, $in);
        }
        if ($v !== null && $v !== false) {
            return $cb($cx, $v);
        }
        if ($else !== null) {
            $ret = $else($cx, $in);
            return $ret;
        }
        return '';
    }