diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/compiler/scala/tools/nsc/typechecker/PatternMatching.scala | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/src/compiler/scala/tools/nsc/typechecker/PatternMatching.scala b/src/compiler/scala/tools/nsc/typechecker/PatternMatching.scala index d8cfd5a765..454d9210ff 100644 --- a/src/compiler/scala/tools/nsc/typechecker/PatternMatching.scala +++ b/src/compiler/scala/tools/nsc/typechecker/PatternMatching.scala @@ -3494,8 +3494,10 @@ trait PatternMatching extends Transform with TypingTransformers with ast.TreeDSL val alternativesSupported = true val canJump = true - object SwitchablePattern { def unapply(pat: Tree): Option[Tree] = pat match { - case Literal(const@Constant((_: Byte ) | (_: Short) | (_: Int ) | (_: Char ))) => + // Constant folding sets the type of a constant tree to `ConstantType(Constant(folded))` + // The tree itself can be a literal, an ident, a selection, ... + object SwitchablePattern { def unapply(pat: Tree): Option[Tree] = pat.tpe match { + case ConstantType(const@Constant((_: Byte ) | (_: Short) | (_: Int ) | (_: Char ))) => Some(Literal(Constant(const.intValue))) // TODO: Java 7 allows strings in switches case _ => None }} |