diff options
Diffstat (limited to 'src/reflect/scala/reflect/internal/Symbols.scala')
| -rw-r--r-- | src/reflect/scala/reflect/internal/Symbols.scala | 38 |
1 files changed, 23 insertions, 15 deletions
diff --git a/src/reflect/scala/reflect/internal/Symbols.scala b/src/reflect/scala/reflect/internal/Symbols.scala index aa62df7093..d32af88a36 100644 --- a/src/reflect/scala/reflect/internal/Symbols.scala +++ b/src/reflect/scala/reflect/internal/Symbols.scala @@ -173,7 +173,6 @@ trait Symbols extends api.Symbols { self: SymbolTable => with HasFlags with Annotatable[Symbol] with Attachable { - // makes sure that all symbols that runtime reflection deals with are synchronized private def isSynchronized = this.isInstanceOf[scala.reflect.runtime.SynchronizedSymbols#SynchronizedSymbol] private def isAprioriThreadsafe = isThreadsafe(AllOps) @@ -182,7 +181,7 @@ trait Symbols extends api.Symbols { self: SymbolTable => type AccessBoundaryType = Symbol type AnnotationType = AnnotationInfo - // TODO - don't allow names to be renamed in this unstructured a fashion. + // TODO - don't allow names to be renamed in this unstructured fashion. // Rename as little as possible. Enforce invariants on all renames. type TypeOfClonedSymbol >: Null <: Symbol { type NameType = Symbol.this.NameType } @@ -793,6 +792,10 @@ trait Symbols extends api.Symbols { self: SymbolTable => final def isDefinedInPackage = effectiveOwner.isPackageClass final def needsFlatClasses = phase.flatClasses && rawowner != NoSymbol && !rawowner.isPackageClass + // TODO introduce a flag for these? + final def isPatternTypeVariable: Boolean = + isAbstractType && !isExistential && !isTypeParameterOrSkolem && isLocalToBlock + /** change name by appending $$<fully-qualified-name-of-class `base`> * Do the same for any accessed symbols or setters/getters. * Implementation in TermSymbol. @@ -1464,11 +1467,9 @@ trait Symbols extends api.Symbols { self: SymbolTable => def info: Type = try { var cnt = 0 while (validTo == NoPeriod) { - //if (settings.debug.value) System.out.println("completing " + this);//DEBUG assert(infos ne null, this.name) assert(infos.prev eq null, this.name) val tp = infos.info - //if (settings.debug.value) System.out.println("completing " + this.rawname + tp.getClass());//debug if ((_rawflags & LOCKED) != 0L) { // rolled out once for performance lock { @@ -1477,6 +1478,7 @@ trait Symbols extends api.Symbols { self: SymbolTable => } } else { _rawflags |= LOCKED + // TODO another commented out lines - this should be solved in one way or another // activeLocks += 1 // lockedSyms += this } @@ -1598,13 +1600,11 @@ trait Symbols extends api.Symbols { self: SymbolTable => assert(isCompilerUniverse) if (infos == null || runId(infos.validFrom) == currentRunId) { infos - } else if (isPackageClass) { - // SI-7801 early phase package scopes are mutated in new runs (Namers#enterPackage), so we have to - // discard transformed infos, rather than just marking them as from this run. - val oldest = infos.oldest - oldest.validFrom = validTo - this.infos = oldest - oldest + } else if (infos ne infos.oldest) { + // SI-8871 Discard all but the first element of type history. Specialization only works in the resident + // compiler / REPL if re-run its info transformer in this run to correctly populate its + // per-run caches, e.g. typeEnv + adaptInfos(infos.oldest) } else { val prev1 = adaptInfos(infos.prev) if (prev1 ne infos.prev) prev1 @@ -2163,6 +2163,12 @@ trait Symbols extends api.Symbols { self: SymbolTable => if (isClass) this else moduleClass } else owner.enclosingTopLevelClass + /** The top-level class or local dummy symbol containing this symbol. */ + def enclosingTopLevelClassOrDummy: Symbol = + if (isTopLevel) { + if (isClass) this else moduleClass.orElse(this) + } else owner.enclosingTopLevelClassOrDummy + /** Is this symbol defined in the same scope and compilation unit as `that` symbol? */ def isCoDefinedWith(that: Symbol) = ( !rawInfoIsNoType @@ -3427,10 +3433,11 @@ trait Symbols extends api.Symbols { self: SymbolTable => trait StubSymbol extends Symbol { devWarning("creating stub symbol to defer error: " + missingMessage) - protected def missingMessage: String + def missingMessage: String /** Fail the stub by throwing a [[scala.reflect.internal.MissingRequirementError]]. */ - override final def failIfStub() = {MissingRequirementError.signal(missingMessage)} // + override final def failIfStub() = + MissingRequirementError.signal(missingMessage) /** Fail the stub by reporting an error to the reporter, setting the IS_ERROR flag * on this symbol, and returning the dummy value `alt`. @@ -3455,8 +3462,8 @@ trait Symbols extends api.Symbols { self: SymbolTable => override def rawInfo = fail(NoType) override def companionSymbol = fail(NoSymbol) } - class StubClassSymbol(owner0: Symbol, name0: TypeName, protected val missingMessage: String) extends ClassSymbol(owner0, owner0.pos, name0) with StubSymbol - class StubTermSymbol(owner0: Symbol, name0: TermName, protected val missingMessage: String) extends TermSymbol(owner0, owner0.pos, name0) with StubSymbol + class StubClassSymbol(owner0: Symbol, name0: TypeName, val missingMessage: String) extends ClassSymbol(owner0, owner0.pos, name0) with StubSymbol + class StubTermSymbol(owner0: Symbol, name0: TermName, val missingMessage: String) extends TermSymbol(owner0, owner0.pos, name0) with StubSymbol trait FreeSymbol extends Symbol { def origin: String @@ -3507,6 +3514,7 @@ trait Symbols extends api.Symbols { self: SymbolTable => override def enclClassChain = Nil override def enclClass: Symbol = this override def enclosingTopLevelClass: Symbol = this + override def enclosingTopLevelClassOrDummy: Symbol = this override def enclosingPackageClass: Symbol = this override def enclMethod: Symbol = this override def associatedFile = NoAbstractFile |