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<?php
namespace Torchlight\Engine\Annotations;
use Torchlight\Engine\Annotations\Parser\ParsedAnnotation;
use Torchlight\Engine\Support\Str;
#[Annotation(name: 'lens')]
class CodeLensAnnotation extends AbstractAnnotation
{
/** @var list<array{line: int, items: list<string>}> */
private array $pendingLens = [];
protected function onLine(ParsedAnnotation $annotation): void
{
$text = $annotation->rawMethodArgs ?? '';
if ($text === '') {
return;
}
$items = $this->parseItems($text);
$line = $this->activeRange()->startLine;
$this->pendingLens[] = ['line' => $line, 'items' => $items];
$this->addBlockClass('has-codelens');
}
public function beforeProcess(): void
{
$this->pendingLens = [];
}
public function afterProcess(): void
{
if (empty($this->pendingLens)) {
return;
}
$spacer = $this->buildGutterSpacer();
$removedLines = $this->annotationEngine->getGenerationOptions()->removedLines;
foreach ($this->pendingLens as $entry) {
$line = $entry['line'];
// If the target line was removed (e.g., by word-diff merging),
// we need to move the lens to the previous visible line.
while (isset($removedLines[$line]) && $line > 1) {
$line--;
}
$indent = $this->buildIndent($line);
$html = $this->buildCodelensHtml($entry['items'], $spacer, $indent);
$this->prependLine($line, $html);
}
}
private function buildGutterSpacer(): string
{
if (! $this->options->withGutter) {
return '';
}
$spacer = '';
foreach ($this->annotationEngine->getGenerationOptions()->getSortedGutters() as $gutter) {
if ($gutter->shouldRender()) {
$spacer .= $gutter->renderSpacer();
}
}
return $spacer;
}
private function buildIndent(int $line): string
{
// When indent guides are active, emit a placeholder that
// HtmlGenerator will replace with guide spans after the
// IndentGuideTransformer has run to ensure widths match
if ($this->options->indentGuides !== false) {
$placeholder = '<!--TL_LENS_INDENT:'.Str::random(16).'-->';
$this->annotationEngine->getGenerationOptions()->codelensIndentPlaceholders[$placeholder] = $line;
return $placeholder;
}
$lineText = $this->annotationEngine->getLineText($line);
if ($lineText === null) {
return '';
}
$indent = 0;
for ($i = 0; $i < mb_strlen($lineText); $i++) {
$char = mb_substr($lineText, $i, 1);
if ($char === ' ') {
$indent++;
} elseif ($char === "\t") {
$indent += 4;
} else {
break;
}
}
if ($indent === 0) {
return '';
}
return str_repeat(' ', $indent);
}
/**
* @return list<string>
*/
private function parseItems(string $text): array
{
$items = [];
$current = '';
$quote = null;
$len = mb_strlen($text);
for ($i = 0; $i < $len; $i++) {
$char = mb_substr($text, $i, 1);
if ($quote !== null) {
if ($char === '\\' && $i + 1 < $len) {
$next = mb_substr($text, $i + 1, 1);
if ($next === $quote || $next === '\\') {
$current .= $next;
$i++;
continue;
}
}
if ($char === $quote) {
$quote = null;
continue;
}
$current .= $char;
} else {
if ($char === '"' || $char === "'") {
$quote = $char;
continue;
}
if ($char === ',' && $i + 1 < $len && mb_substr($text, $i + 1, 1) === ' ') {
$items[] = trim($current);
$current = '';
$i++;
continue;
}
$current .= $char;
}
}
$trimmed = trim($current);
if ($trimmed !== '') {
$items[] = $trimmed;
}
return $items;
}
/**
* @param list<string> $items
*/
private function buildCodelensHtml(array $items, string $spacer = '', string $indent = ''): string
{
$spans = [];
foreach ($items as $item) {
$spans[] = $this->buildItemHtml($item);
}
$separator = "<span class='codelens-separator'> | </span>";
$inner = implode($separator, $spans);
return "<div class='codelens'>{$spacer}{$indent}{$inner}</div>";
}
private function buildItemHtml(string $item): string
{
if (str_contains($item, ': ')) {
[$key, $value] = explode(': ', $item, 2);
$key = htmlspecialchars($key);
$value = htmlspecialchars($value);
return "<span class='codelens-item'><span class='codelens-key'>{$key}</span>: <span class='codelens-value'>{$value}</span></span>";
}
return "<span class='codelens-item'>".htmlspecialchars($item).'</span>';
}
}