protected function normalizeValue($value) { if ($value instanceof Node) { return $value; } elseif (is_null($value)) { return new Expr\ConstFetch( new Name('null') ); } elseif (is_bool($value)) { return new Expr\ConstFetch( new Name($value ? 'true' : 'false') ); } elseif (is_int($value)) { return new Scalar\LNumber($value); } elseif (is_float($value)) { return new Scalar\DNumber($value); } elseif (is_string($value)) { return new Scalar\String_($value); } elseif (is_array($value)) { $items = array(); $lastKey = -1; foreach ($value as $itemKey => $itemValue) { // for consecutive, numeric keys don't generate keys if (null !== $lastKey && ++$lastKey === $itemKey) { $items[] = new Expr\ArrayItem( $this->normalizeValue($itemValue) ); } else { $lastKey = null; $items[] = new Expr\ArrayItem( $this->normalizeValue($itemValue), $this->normalizeValue($itemKey) ); } } return new Expr\Array_($items); } else { throw new \LogicException('Invalid value'); } }