Add multiline generic support

This solves #42

Author: Andreas Frömer

src/Parser/TypeParser.php

@@ -164,14 +164,19 @@ private function parseNullable(TokenIterator $tokens): Ast\Type\TypeNode
 
 	public function parseGeneric(TokenIterator $tokens, Ast\Type\IdentifierTypeNode $baseType): Ast\Type\GenericTypeNode
 	{
-		$tokens->consumeTokenType(Lexer::TOKEN_OPEN_ANGLE_BRACKET);
+    		$tokens->consumeTokenType(Lexer::TOKEN_OPEN_ANGLE_BRACKET);
+		$tokens->tryConsumeTokenType(Lexer::TOKEN_PHPDOC_EOL);
 		$genericTypes = [$this->parse($tokens)];
 
 		while ($tokens->tryConsumeTokenType(Lexer::TOKEN_COMMA)) {
+            $tokens->tryConsumeTokenType(Lexer::TOKEN_PHPDOC_EOL);
 			$genericTypes[] = $this->parse($tokens);
+            $tokens->tryConsumeTokenType(Lexer::TOKEN_PHPDOC_EOL);
 		}
 
+        $tokens->tryConsumeTokenType(Lexer::TOKEN_PHPDOC_EOL);
 		$tokens->consumeTokenType(Lexer::TOKEN_CLOSE_ANGLE_BRACKET);
+
 		return new Ast\Type\GenericTypeNode($baseType, $genericTypes);
 	}
 

tests/PHPStan/Parser/TypeParserTest.php

@@ -899,6 +899,62 @@ public function provideParseData(): array
 					new ConstTypeNode(new ConstFetchNode('QueueAttributeName', '*')),
 				]),
 			],
+            [
+                'array<' . PHP_EOL .
+                '  Foo' . PHP_EOL .
+                '>',
+                new GenericTypeNode(
+                    new IdentifierTypeNode('array'),
+                    [
+                        new IdentifierTypeNode('Foo')
+                    ]
+                )
+            ],
+            [
+                'array<' . PHP_EOL .
+                '  Foo,' . PHP_EOL .
+                '  Bar' . PHP_EOL .
+                '>',
+                new GenericTypeNode(
+                    new IdentifierTypeNode('array'),
+                    [
+                        new IdentifierTypeNode('Foo'),
+                        new IdentifierTypeNode('Bar'),
+                    ]
+                )
+            ],
+            [
+                'array<' . PHP_EOL .
+                '  Foo, Bar' . PHP_EOL .
+                '>',
+                new GenericTypeNode(
+                    new IdentifierTypeNode('array'),
+                    [
+                        new IdentifierTypeNode('Foo'),
+                        new IdentifierTypeNode('Bar'),
+                    ]
+                )
+            ],
+            [
+                'array<' . PHP_EOL .
+                '  Foo,' . PHP_EOL .
+                '  array<' . PHP_EOL .
+                '    Bar' . PHP_EOL .
+                '  >' . PHP_EOL .
+                '>',
+                new GenericTypeNode(
+                    new IdentifierTypeNode('array'),
+                    [
+                        new IdentifierTypeNode('Foo'),
+                        new GenericTypeNode(
+                            new IdentifierTypeNode('array'),
+                            [
+                                new IdentifierTypeNode('Bar')
+                            ]
+                        )
+                    ]
+                )
+            ],
 		];
 	}