Allow whitespace and comments in group import namespace (#48)

* Add test for whitespace at end of import namespace

* Allow whitespace after group import namespace

* Add test for comment at end of group import namespace

Author: sirbrillig

ImportDetection/SniffHelpers.php

@@ -93,7 +93,11 @@ private function getImportedSymbolsFromGroupStatement(File $phpcsFile, int $stac
 		}
 
 		// Get the namespace for the import first, so we can attach it to each Symbol
-		$importPrefixSymbol = $this->getFullSymbol($phpcsFile, $startBracketPtr - 1);
+		$endOfImportNamespace = $phpcsFile->findPrevious([T_NS_SEPARATOR], $startBracketPtr - 1);
+		if (! $endOfImportNamespace) {
+			throw new \Exception('Unable to parse namespace for group import statement starting at token ' . $stackPtr . ': ' . $tokens[$stackPtr]['content']);
+		}
+		$importPrefixSymbol = $this->getFullSymbol($phpcsFile, $endOfImportNamespace);
 
 		$collectedSymbols = [];
 		$lastStringPtr = $startBracketPtr;

tests/Sniffs/Imports/Fixtures/ClassFixtures.php

@@ -9,7 +9,22 @@
 	E\F, // used line 15
 	I\J as H, // not used
 };
+use Some\NS\ {
+	ClassName,
+	function SubLevel\functionName,
+	const Constants\CONSTANT_NAME as SOME_CONSTANT,
+	function SubLevel\AnotherName,
+};
+use Some\NS\/* test comment with a backslash \ */{
+	AnotherLevel,
+};
 
 A::class;
 Z::class;
 F::class;
+
+echo ClassName::class;
+echo functionName();
+echo SOME_CONSTANT;
+echo AnotherName();
+echo AnotherLevel::class;