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<?php
/**
* SCSSPHP
*
* @copyright 2012-2015 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://leafo.github.io/scssphp
*/
namespace Leafo\ScssPhp\Formatter;
use Leafo\ScssPhp\Formatter;
/**
* SCSS nested formatter
*
* @author Leaf Corcoran <leafot@gmail.com>
*/
class Nested extends Formatter
{
/**
* {@inheritdoc}
*/
public function __construct()
{
$this->indentLevel = 0;
$this->indentChar = ' ';
$this->break = "\n";
$this->open = ' {';
$this->close = ' }';
$this->tagSeparator = ', ';
$this->assignSeparator = ': ';
}
/**
* Adjust the depths of all children, depth first
*
* @param \stdClass $block
*/
public function adjustAllChildren($block)
{
// flatten empty nested blocks
$children = array();
foreach ($block->children as $i => $child) {
if (empty($child->lines) && empty($child->children)) {
if (isset($block->children[$i + 1])) {
$block->children[$i + 1]->depth = $child->depth;
}
continue;
}
$children[] = $child;
}
$count = count($children);
for ($i = 0; $i < $count; $i++) {
$depth = $children[$i]->depth;
$j = $i + 1;
if (isset($children[$j]) && $depth < $children[$j]->depth) {
$childDepth = $children[$j]->depth;
for (; $j < $count; $j++) {
if ($depth < $children[$j]->depth && $childDepth >= $children[$j]->depth) {
$children[$j]->depth = $depth + 1;
}
}
}
}
$block->children = $children;
// make relative to parent
foreach ($block->children as $child) {
$this->adjustAllChildren($child);
$child->depth = $child->depth - $block->depth;
}
}
/**
* {@inheritdoc}
*/
protected function blockLines($inner, $block)
{
$glue = $this->break . $inner;
foreach ($block->lines as $index => $line) {
if (substr($line, 0, 2) === '/*') {
$block->lines[$index] = preg_replace('/(\r|\n)+/', $glue, $line);
}
}
echo $inner . implode($glue, $block->lines);
if (! empty($block->children)) {
echo $this->break;
}
}
/**
* {@inheritdoc}
*/
protected function block($block)
{
if ($block->type === 'root') {
$this->adjustAllChildren($block);
}
$inner = $pre = $this->indentStr($block->depth - 1);
if (! empty($block->selectors)) {
echo $pre .
implode($this->tagSeparator, $block->selectors) .
$this->open . $this->break;
$this->indentLevel++;
$inner = $this->indentStr($block->depth - 1);
}
if (! empty($block->lines)) {
$this->blockLines($inner, $block);
}
foreach ($block->children as $i => $child) {
$this->block($child);
if ($i < count($block->children) - 1) {
echo $this->break;
if (isset($block->children[$i + 1])) {
$next = $block->children[$i + 1];
if ($next->depth === max($block->depth, 1) && $child->depth >= $next->depth) {
echo $this->break;
}
}
}
}
if (! empty($block->selectors)) {
$this->indentLevel--;
echo $this->close;
}
if ($block->type === 'root') {
echo $this->break;
}
}
}
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