IgnoreLexer: drop support for multiline identifiers

Author: janedbal

src/Parser/RichParser.php

@@ -14,10 +14,8 @@
 use PHPStan\ShouldNotHappenException;
 use function array_filter;
 use function array_pop;
-use function array_values;
 use function count;
 use function implode;
-use function in_array;
 use function is_string;
 use function preg_match_all;
 use function sprintf;
@@ -278,8 +276,19 @@ private function getLinesToIgnoreForTokenByIgnoreComment(
 	private function parseIdentifiers(string $text, int $ignorePos): array
 	{
 		$text = substr($text, $ignorePos + strlen('@phpstan-ignore'));
-		$tokens = $this->ignoreLexer->tokenize($text);
-		$tokens = array_values(array_filter($tokens, static fn (array $token) => !in_array($token[IgnoreLexer::TYPE_OFFSET], [IgnoreLexer::TOKEN_WHITESPACE, IgnoreLexer::TOKEN_EOL], true)));
+		$originalTokens = $this->ignoreLexer->tokenize($text);
+		$tokens = [];
+
+		foreach ($originalTokens as $originalToken) {
+			if ($originalToken[IgnoreLexer::TYPE_OFFSET] === IgnoreLexer::TOKEN_WHITESPACE) {
+				continue;
+			}
+			if ($originalToken[IgnoreLexer::TYPE_OFFSET] === IgnoreLexer::TOKEN_EOL) {
+				break;
+			}
+			$tokens[] = $originalToken;
+		}
+
 		$c = count($tokens);
 
 		$identifiers = [];
@@ -321,6 +330,10 @@ private function parseIdentifiers(string $text, int $ignorePos): array
 			$parenthesisStack[] = $tokenLine;
 		}
 
+		if (isset($tokens[$c - 1]) && $tokens[$c - 1][IgnoreLexer::TYPE_OFFSET] === IgnoreLexer::TOKEN_COMMA) {
+			throw new IgnoreParseException('Unexpected trailing comma (,)', $tokens[$c - 1][IgnoreLexer::LINE_OFFSET]);
+		}
+
 		if (count($parenthesisStack) > 0) {
 			throw new IgnoreParseException('Unclosed opening parenthesis "(" without closing parenthesis ")"', $parenthesisStack[count($parenthesisStack) - 1]);
 		}

tests/PHPStan/Parser/RichParserTest.php

@@ -221,18 +221,6 @@ public function dataLinesToIgnore(): iterable
 				3 => ['test'],
 			],
 		];
-
-		yield [
-			'<?php' . PHP_EOL .
-			PHP_EOL .
-			'/**' . PHP_EOL .
-			' * @phpstan-ignore return.ref,' . PHP_EOL .
-			' *                 return.non,' . PHP_EOL .
-			' */',
-			[
-				6 => ['return.ref', 'return.non'],
-			],
-		];
 	}
 
 	/**
@@ -245,8 +233,8 @@ public function testLinesToIgnore(string $code, array $expectedLines): void
 		$parser = self::getContainer()->getService('currentPhpVersionRichParser');
 		$ast = $parser->parseString($code);
 		$lines = $ast[0]->getAttribute('linesToIgnore');
-		$this->assertSame($expectedLines, $lines);
 		$this->assertNull($ast[0]->getAttribute('linesToIgnoreParseErrors'));
+		$this->assertSame($expectedLines, $lines);
 	}
 
 	public function dataLinesToIgnoreParseErrors(): iterable
@@ -263,6 +251,50 @@ public function dataLinesToIgnoreParseErrors(): iterable
 			],
 		];
 
+		yield [
+			'<?php' . PHP_EOL .
+			'/**' . PHP_EOL .
+			' * @phpstan-ignore return.ref,' . PHP_EOL .
+			' */',
+			[
+				3 => ['Unexpected trailing comma (,)'],
+			],
+		];
+
+		yield [
+			'<?php' . PHP_EOL .
+			'/**' . PHP_EOL .
+			' * @phpstan-ignore' . PHP_EOL .
+			' */',
+			[
+				3 => ['Missing identifier'],
+			],
+		];
+
+		yield [
+			'<?php' . PHP_EOL .
+			'test(); // @phpstan-ignore return.ref,' . PHP_EOL,
+			[
+				2 => ['Unexpected trailing comma (,)'],
+			],
+		];
+
+		yield [
+			'<?php' . PHP_EOL .
+			'test(); // @phpstan-ignore test (comment),' . PHP_EOL,
+			[
+				2 => ['Unexpected trailing comma (,)'],
+			],
+		];
+
+		yield [
+			'<?php' . PHP_EOL .
+			'test(); // @phpstan-ignore ,' . PHP_EOL,
+			[
+				2 => ['First token is not an identifier'],
+			],
+		];
+
 		yield [
 			'<?php' . PHP_EOL .
 			'test(); // @phpstan-ignore return.ref, return.non )foo',