From 97db00dadafd438a7d69f9bc1e80dccf9dc41a37 Mon Sep 17 00:00:00 2001
From: Martin Odersky <odersky@gmail.com>
Date: Thu, 4 Sep 2008 17:05:28 +0000
Subject: disabled volatile checks because eclipse plugin...

disabled volatile checks because eclipse plugin build breaks.
---
 src/compiler/scala/tools/nsc/symtab/Types.scala    | 23 +++++++++++-----------
 .../scala/tools/nsc/typechecker/Typers.scala       |  7 ++-----
 2 files changed, 14 insertions(+), 16 deletions(-)

(limited to 'src/compiler')

diff --git a/src/compiler/scala/tools/nsc/symtab/Types.scala b/src/compiler/scala/tools/nsc/symtab/Types.scala
index f50f82d5b1..a63a717d2a 100644
--- a/src/compiler/scala/tools/nsc/symtab/Types.scala
+++ b/src/compiler/scala/tools/nsc/symtab/Types.scala
@@ -1159,10 +1159,12 @@ trait Types {
             decls))
       else super.normalize
 
-    override def isVolatile =
+    override def isVolatile = false // for now; this should really be:
+    /*
       !parents.isEmpty &&
       (!parents.tail.isEmpty || !decls.isEmpty) &&
       (parents exists (_.typeSymbol.isAbstractType))
+*/
 
     override def kind = "RefinedType"
   }
@@ -2588,6 +2590,12 @@ A type's typeSymbol should never be inspected directly.
     }
   }
 
+  def singletonBounds(hi: Type) = {
+    if (hi.isVolatile)
+      throw new MalformedType("cannot abstract over singleton with volatile type "+hi)
+    mkTypeBounds(NothingClass.tpe, intersectionType(List(hi, SingletonClass.tpe)))
+  }
+
   /** A map to compute the asSeenFrom method  */
   class AsSeenFromMap(pre: Type, clazz: Symbol) extends TypeMap {
     override val dropNonConstraintAnnotations = true
@@ -2628,8 +2636,7 @@ A type's typeSymbol should never be inspected directly.
     def stabilize(pre: Type, clazz: Symbol): Type = {
       capturedPre get clazz match {
         case None =>
-          val qvar = makeFreshExistential(".type", clazz,
-            mkTypeBounds(NothingClass.tpe, intersectionType(List(pre, SingletonClass.tpe))))
+          val qvar = makeFreshExistential(".type", clazz, singletonBounds(pre))
           capturedPre += (clazz -> qvar)
           capturedParams = qvar :: capturedParams
           qvar
@@ -2904,11 +2911,6 @@ A type's typeSymbol should never be inspected directly.
     private var existSyms = immutable.Map.empty[Int, Symbol]
     def existentialsNeeded: List[Symbol] = existSyms.values.toList
 
-    private def boundFor(actualIdx: Int) =
-      mkTypeBounds(
-	NothingClass.tpe,
-	intersectionType(List(actuals(actualIdx), SingletonClass.tpe)))
-
     /* Return the type symbol for referencing a parameter index
      * inside the existential quantifier.  */
     def existSymFor(actualIdx: Int, oldSym: Symbol) =
@@ -2916,11 +2918,10 @@ A type's typeSymbol should never be inspected directly.
 	existSyms(actualIdx)
       else {
 	val symowner = oldSym.owner // what should be used??
-        val bound = boundFor(actualIdx)
+        val bound = singletonBounds(actuals(actualIdx))
 
         val sym =
-	  symowner.newAbstractType(
-	    oldSym.pos, oldSym.name+".type")
+	  symowner.newAbstractType(oldSym.pos, oldSym.name+".type")
 
 	sym.setInfo(bound)
         sym.setFlag(oldSym.flags)
diff --git a/src/compiler/scala/tools/nsc/typechecker/Typers.scala b/src/compiler/scala/tools/nsc/typechecker/Typers.scala
index 406e056128..ea7f9d447d 100644
--- a/src/compiler/scala/tools/nsc/typechecker/Typers.scala
+++ b/src/compiler/scala/tools/nsc/typechecker/Typers.scala
@@ -3290,11 +3290,8 @@ trait Typers { self: Analyzer =>
           tree setType ref1.tpe.resultType
 
         case SelectFromTypeTree(qual, selector) =>
-/* maybe need to do this:
-          val res = typedSelect(typedType(qual, mode), selector)
-          tree setType res.tpe setSymbol res.symbol
-          res
-*/
+          val qual1 = typedType(qual, mode)
+          if (qual1.tpe.isVolatile) error(tree.pos, "illegal type selection from volatile type "+qual.tpe)
           typedSelect(typedType(qual, mode), selector)
 
         case CompoundTypeTree(templ) =>
-- 
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