Make 3.3 the default source version (#16329)

Author: Kordyjan

compiler/src/dotty/tools/dotc/config/SourceVersion.scala

@@ -19,7 +19,7 @@ enum SourceVersion:
   def isAtLeast(v: SourceVersion) = stable.ordinal >= v.ordinal
 
 object SourceVersion extends Property.Key[SourceVersion]:
-  def defaultSourceVersion = `3.2`
+  def defaultSourceVersion = `3.3`
 
   /** language versions that may appear in a language import, are deprecated, but not removed from the standard library. */
   val illegalSourceVersionNames = List("3.1-migration").map(_.toTermName)

compiler/test/dotty/tools/repl/ReplCompilerTests.scala

@@ -347,27 +347,6 @@ class ReplCompilerTests extends ReplTest:
     assertEquals("java.lang.AssertionError: assertion failed", all.head)
   }
 
-  @Test def i14491 =
-    initially {
-      run("import language.experimental.fewerBraces")
-    } andThen {
-      run("""|val x = Seq(7,8,9).apply:
-             |  1
-             |""".stripMargin)
-      assertEquals("val x: Int = 8", storedOutput().trim)
-    }
-    initially {
-      run("""|import language.experimental.fewerBraces
-             |import language.experimental.fewerBraces as _
-             |""".stripMargin)
-    } andThen {
-      run("""|val x = Seq(7,8,9).apply:
-             |  1
-             |""".stripMargin)
-      assert("expected error if fewerBraces is unimported",
-        lines().exists(_.contains("missing arguments for method apply")))
-    }
-
 object ReplCompilerTests:
 
   private val pattern = Pattern.compile("\\r[\\n]?|\\n");

tests/neg/i4373b.scala

@@ -1,5 +1,5 @@
 // ==> 05bef7805687ba94da37177f7568e3ba7da1f91c.scala <==
 class x0 {
-  x1:
-      x0 | _  // error
-// error
+  x1:  // error
+      x0 | _
+      // error

tests/neg/indent-colons.check

@@ -1,29 +1,29 @@
--- Error: tests/neg/indent-colons.scala:6:4 ----------------------------------------------------------------------------
-6 |    :  // error
+-- Error: tests/neg/indent-colons.scala:7:4 ----------------------------------------------------------------------------
+7 |    :  // error
   |    ^
   |    end of statement expected but ':' found
--- Error: tests/neg/indent-colons.scala:12:2 ---------------------------------------------------------------------------
-12 |  :  // error
+-- Error: tests/neg/indent-colons.scala:13:2 ---------------------------------------------------------------------------
+13 |  :  // error
    |  ^
    |  end of statement expected but ':' found
--- Error: tests/neg/indent-colons.scala:19:2 ---------------------------------------------------------------------------
-19 |  :  // error
+-- Error: tests/neg/indent-colons.scala:20:2 ---------------------------------------------------------------------------
+20 |  :  // error
    |  ^
    |  end of statement expected but ':' found
--- [E018] Syntax Error: tests/neg/indent-colons.scala:26:14 ------------------------------------------------------------
-26 |  val y = 1 + : // error
+-- [E018] Syntax Error: tests/neg/indent-colons.scala:27:14 ------------------------------------------------------------
+27 |  val y = 1 + : // error
    |              ^
    |              expression expected but : found
    |
    | longer explanation available when compiling with `-explain`
--- [E018] Syntax Error: tests/neg/indent-colons.scala:30:27 ------------------------------------------------------------
-30 |  val all = credentials ++ :  // error
+-- [E018] Syntax Error: tests/neg/indent-colons.scala:31:27 ------------------------------------------------------------
+31 |  val all = credentials ++ :  // error
    |                           ^
    |                           expression expected but : found
    |
    | longer explanation available when compiling with `-explain`
--- [E134] Type Error: tests/neg/indent-colons.scala:23:12 --------------------------------------------------------------
-23 |  val x = 1.+ :  // error
+-- [E134] Type Error: tests/neg/indent-colons.scala:24:12 --------------------------------------------------------------
+24 |  val x = 1.+ :  // error
    |          ^^^
    |          None of the overloaded alternatives of method + in class Int with types
    |           (x: Double): Double
@@ -35,27 +35,27 @@
    |           (x: Byte): Int
    |           (x: String): String
    |          match expected type (2 : Int)
--- [E006] Not Found Error: tests/neg/indent-colons.scala:32:7 ----------------------------------------------------------
-32 |    if file.isEmpty  // error
+-- [E006] Not Found Error: tests/neg/indent-colons.scala:33:7 ----------------------------------------------------------
+33 |    if file.isEmpty  // error
    |       ^^^^
    |       Not found: file
    |
    | longer explanation available when compiling with `-explain`
--- [E006] Not Found Error: tests/neg/indent-colons.scala:34:13 ---------------------------------------------------------
-34 |    else Seq(file) // error
+-- [E006] Not Found Error: tests/neg/indent-colons.scala:35:13 ---------------------------------------------------------
+35 |    else Seq(file) // error
    |             ^^^^
    |             Not found: file
    |
    | longer explanation available when compiling with `-explain`
--- Error: tests/neg/indent-colons.scala:4:2 ----------------------------------------------------------------------------
-4 |  tryEither:  // error
+-- Error: tests/neg/indent-colons.scala:5:2 ----------------------------------------------------------------------------
+5 |  tryEither:  // error
   |  ^^^^^^^^^
   |  missing arguments for method tryEither
--- Error: tests/neg/indent-colons.scala:10:2 ---------------------------------------------------------------------------
-10 |  tryEither:  // error
+-- Error: tests/neg/indent-colons.scala:11:2 ---------------------------------------------------------------------------
+11 |  tryEither:  // error
    |  ^^^^^^^^^
    |  missing arguments for method tryEither
--- Error: tests/neg/indent-colons.scala:17:2 ---------------------------------------------------------------------------
-17 |  Some(3).fold:  // error
+-- Error: tests/neg/indent-colons.scala:18:2 ---------------------------------------------------------------------------
+18 |  Some(3).fold:  // error
    |  ^^^^^^^^^^^^
    |  missing arguments for method fold in class Option

tests/neg/indent-colons.scala

@@ -1,3 +1,4 @@
+import language.`3.2`
 def tryEither[T](x: T)(y: Int => T): T = ???
 
 def test1 =