diff options
Diffstat (limited to 'src/dotty/tools/dotc/ast/TreeInfo.scala')
| -rw-r--r-- | src/dotty/tools/dotc/ast/TreeInfo.scala | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/src/dotty/tools/dotc/ast/TreeInfo.scala b/src/dotty/tools/dotc/ast/TreeInfo.scala index 51e1ff16f..8163c8bcc 100644 --- a/src/dotty/tools/dotc/ast/TreeInfo.scala +++ b/src/dotty/tools/dotc/ast/TreeInfo.scala @@ -26,15 +26,18 @@ trait TreeInfo[T >: Untyped <: Type] { self: Trees.Instance[T] => /** Is tree legal as a member definition of an interface? */ - def isInterfaceMember(tree: Tree): Boolean = unsplice(tree) match { - case EmptyTree => true - case Import(_, _) => true - case TypeDef(_, _, _) => true - case DefDef(mods, _, _, _, _, __) => mods.flags is Deferred - case ValDef(mods, _, _, _) => mods is Deferred + def isPureInterfaceMember(tree: Tree): Boolean = unsplice(tree) match { + case EmptyTree | Import(_, _) | TypeDef(_, _, _) => true + case DefDef(_, _, _, _, _, rhs) => rhs.isEmpty + case ValDef(mods, _, _, rhs) => rhs.isEmpty case _ => false } + /** Is tree legal as a member definition of a no-init trait? + */ + def isNoInitMember(tree: Tree): Boolean = + isPureInterfaceMember(tree) || unsplice(tree).isInstanceOf[DefDef] + def isOpAssign(tree: Tree) = unsplice(tree) match { case Apply(fn, _ :: Nil) => unsplice(fn) match { |