Extractor: supports file comment extraction with singleline declare

Author: dg

src/PhpGenerator/Extractor.php

@@ -238,12 +238,28 @@ public function extractAll(): PhpFile
 	{
 		$phpFile = new PhpFile;
 
+		$firstStmt = $this->statements[0] ?? null;
 		if (
-			$this->statements
-			&& !$this->statements[0] instanceof Node\Stmt\ClassLike
-			&& !$this->statements[0] instanceof Node\Stmt\Function_
+			$firstStmt instanceof Node\Stmt\Declare_
+			&& $firstStmt->declares[0]->key->name === 'strict_types'
 		) {
-			$this->addCommentAndAttributes($phpFile, $this->statements[0]);
+			$firstStmt = $this->statements[1] ?? null;
+		}
+
+		if (
+			$firstStmt
+			&& !$firstStmt instanceof Node\Stmt\ClassLike
+			&& !$firstStmt instanceof Node\Stmt\Function_
+		) {
+			$comments = $firstStmt->getComments();
+			foreach ($comments as $i => $comment) {
+				if ($comment instanceof PhpParser\Comment\Doc) {
+					$phpFile->setComment(Helpers::unformatDocComment($comment->getReformattedText()));
+					unset($comments[$i]);
+					$firstStmt->setAttribute('comments', array_values($comments));
+					break;
+				}
+			}
 		}
 
 		$namespaces = ['' => $this->statements];
@@ -439,7 +455,7 @@ private function addFunctionToFile(PhpFile $phpFile, Node\Stmt\Function_ $node):
 
 
 	private function addCommentAndAttributes(
-		PhpFile|ClassLike|Constant|Property|GlobalFunction|Method|Parameter|EnumCase|TraitUse|PropertyHook $element,
+		ClassLike|Constant|Property|GlobalFunction|Method|Parameter|EnumCase|TraitUse|PropertyHook $element,
 		Node $node,
 	): void
 	{

tests/PhpGenerator/Extractor.extractAll.file.comments.phpt

@@ -21,6 +21,17 @@ Assert::null($file->getComment());
 Assert::same('doc comment', $file->getClasses()['Class1']->getComment());
 
 
+$file = (new Extractor(<<<'XX'
+	<?php declare(strict_types=1);
+
+	/** doc comment */
+
+	namespace Abc;
+	XX))->extractAll();
+
+Assert::same('doc comment', $file->getComment());
+
+
 $file = (new Extractor(<<<'XX'
 	<?php