diff options
Diffstat (limited to 'src/compiler/scala/tools/nsc/typechecker/Contexts.scala')
| -rw-r--r-- | src/compiler/scala/tools/nsc/typechecker/Contexts.scala | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/src/compiler/scala/tools/nsc/typechecker/Contexts.scala b/src/compiler/scala/tools/nsc/typechecker/Contexts.scala index ac3c94c47a..bcf529ecd2 100644 --- a/src/compiler/scala/tools/nsc/typechecker/Contexts.scala +++ b/src/compiler/scala/tools/nsc/typechecker/Contexts.scala @@ -100,6 +100,12 @@ trait Contexts { self: Analyzer => var outer: Context = _ // The next outer context var enclClass: Context = _ // The next outer context whose tree is a // template or package definition + @inline final def savingEnclClass[A](c: Context)(a: => A): A = { + val saved = enclClass + enclClass = c + try a finally enclClass = saved + } + var enclMethod: Context = _ // The next outer context whose tree is a method var variance: Int = _ // Variance relative to enclosing class private var _undetparams: List[Symbol] = List() // Undetermined type parameters, @@ -638,11 +644,12 @@ trait Contexts { self: Analyzer => if (owner != nextOuter.owner && owner.isClass && !owner.isPackageClass && !inSelfSuperCall) { if (!owner.isInitialized) return nextOuter.implicitss // debuglog("collect member implicits " + owner + ", implicit members = " + owner.thisType.implicitMembers)//DEBUG - val savedEnclClass = enclClass - this.enclClass = this - val res = collectImplicits(owner.thisType.implicitMembers, owner.thisType) - this.enclClass = savedEnclClass - res + savingEnclClass(this) { + // !!! In the body of `class C(implicit a: A) { }`, `implicitss` returns `List(List(a), List(a), List(<predef..)))` + // it handled correctly by implicit search, which considers the second `a` to be shadowed, but should be + // remedied nonetheless. + collectImplicits(owner.thisType.implicitMembers, owner.thisType) + } } else if (scope != nextOuter.scope && !owner.isPackageClass) { debuglog("collect local implicits " + scope.toList)//DEBUG collectImplicits(scope.toList, NoPrefix) |