Remove TypeCombinator::CONSTANT_SCALAR_UNION_THRESHOLD

Author: ondrejmirtes

src/Type/TypeCombinator.php

@@ -23,8 +23,6 @@
 class TypeCombinator
 {
 
-	private const CONSTANT_SCALAR_UNION_THRESHOLD = 8;
-
 	public static function addNull(Type $type): Type
 	{
 		return self::union($type, new NullType());
@@ -289,15 +287,6 @@ public static function union(Type ...$types): Type
 				continue;
 			}
 			foreach ($scalarTypeItems as $type) {
-				if (count($scalarTypeItems) > self::CONSTANT_SCALAR_UNION_THRESHOLD) {
-					$types[] = $type->generalize(GeneralizePrecision::moreSpecific());
-
-					if ($type instanceof ConstantStringType) {
-						continue;
-					}
-
-					break;
-				}
 				$types[] = $type;
 			}
 		}

tests/PHPStan/Analyser/data/bug-2677.php

@@ -44,6 +44,6 @@ function ()
 	assertType('array(\'Bug2677\\\\A\', \'Bug2677\\\\B\', \'Bug2677\\\\C\', \'Bug2677\\\\D\', \'Bug2677\\\\E\', \'Bug2677\\\\F\', \'Bug2677\\\\G\', \'Bug2677\\\\H\', \'Bug2677\\\\I\', \'Bug2677\\\\J\', \'Bug2677\\\\K\', \'Bug2677\\\\L\', \'Bug2677\\\\M\', \'Bug2677\\\\N\', \'Bug2677\\\\O\', \'Bug2677\\\\P\')', $classes);
 
 	foreach ($classes as $class) {
-		assertType('class-string', $class);
+		assertType('\'Bug2677\\\\A\'|\'Bug2677\\\\B\'|\'Bug2677\\\\C\'|\'Bug2677\\\\D\'|\'Bug2677\\\\E\'|\'Bug2677\\\\F\'|\'Bug2677\\\\G\'|\'Bug2677\\\\H\'|\'Bug2677\\\\I\'|\'Bug2677\\\\J\'|\'Bug2677\\\\K\'|\'Bug2677\\\\L\'|\'Bug2677\\\\M\'|\'Bug2677\\\\N\'|\'Bug2677\\\\O\'|\'Bug2677\\\\P\'', $class);
 	}
 };

tests/PHPStan/Type/TypeCombinatorTest.php

@@ -841,8 +841,8 @@ public function dataUnion(): array
 					new ConstantStringType('loremm'),
 					new ConstantStringType('loremmm'),
 				],
-				IntersectionType::class,
-				'non-empty-string',
+				UnionType::class,
+				"'bar'|'barr'|'baz'|'bazz'|'foo'|'fooo'|'lorem'|'loremm'|'loremmm'",
 			],
 			[
 				[