diff options
Diffstat (limited to 'src/reflect/scala/reflect/internal/AnnotationInfos.scala')
| -rw-r--r-- | src/reflect/scala/reflect/internal/AnnotationInfos.scala | 42 |
1 files changed, 23 insertions, 19 deletions
diff --git a/src/reflect/scala/reflect/internal/AnnotationInfos.scala b/src/reflect/scala/reflect/internal/AnnotationInfos.scala index b923541b56..8ba3e62ac2 100644 --- a/src/reflect/scala/reflect/internal/AnnotationInfos.scala +++ b/src/reflect/scala/reflect/internal/AnnotationInfos.scala @@ -7,7 +7,6 @@ package scala package reflect package internal -import pickling.ByteCodecs import scala.annotation.tailrec import scala.collection.immutable.ListMap import scala.language.postfixOps @@ -30,12 +29,6 @@ trait AnnotationInfos extends api.Annotations { self: SymbolTable => def staticAnnotations = annotations filter (_.isStatic) - /** Symbols of any @throws annotations on this symbol. - */ - def throwsAnnotations(): List[Symbol] = annotations collect { - case ThrownException(exc) => exc - } - def addThrowsAnnotation(throwableSym: Symbol): Self = { val throwableTpe = if (throwableSym.isMonomorphicType) throwableSym.tpe else { debuglog(s"Encountered polymorphic exception `${throwableSym.fullName}` while parsing class file.") @@ -175,6 +168,13 @@ trait AnnotationInfos extends api.Annotations { self: SymbolTable => def unapply(info: AnnotationInfo): Option[(Type, List[Tree], List[(Name, ClassfileAnnotArg)])] = Some((info.atp, info.args, info.assocs)) + + def mkFilter(category: Symbol, defaultRetention: Boolean)(ann: AnnotationInfo) = + (ann.metaAnnotations, ann.defaultTargets) match { + case (Nil, Nil) => defaultRetention + case (Nil, defaults) => defaults contains category + case (metas, _) => metas exists (_ matches category) + } } class CompleteAnnotationInfo( @@ -296,10 +296,13 @@ trait AnnotationInfos extends api.Annotations { self: SymbolTable => } /** The default kind of members to which this annotation is attached. - * For instance, for scala.deprecated defaultTargets = - * List(getter, setter, beanGetter, beanSetter). - */ - def defaultTargets = symbol.annotations map (_.symbol) filter isMetaAnnotation + * For instance, for scala.deprecated defaultTargets = + * List(getter, setter, beanGetter, beanSetter). + * + * NOTE: have to call symbol.initialize, since we won't get any annotations if the symbol hasn't yet been completed + */ + def defaultTargets = symbol.initialize.annotations map (_.symbol) filter isMetaAnnotation + // Test whether the typeSymbol of atp conforms to the given class. def matches(clazz: Symbol) = !symbol.isInstanceOf[StubSymbol] && (symbol isNonBottomSubClass clazz) // All subtrees of all args are considered. @@ -313,8 +316,9 @@ trait AnnotationInfos extends api.Annotations { self: SymbolTable => /** Check whether any of the arguments mention a symbol */ def refsSymbol(sym: Symbol) = hasArgWhich(_.symbol == sym) - def stringArg(index: Int) = constantAtIndex(index) map (_.stringValue) - def intArg(index: Int) = constantAtIndex(index) map (_.intValue) + def stringArg(index: Int) = constantAtIndex(index) map (_.stringValue) + def intArg(index: Int) = constantAtIndex(index) map (_.intValue) + def booleanArg(index: Int) = constantAtIndex(index) map (_.booleanValue) def symbolArg(index: Int) = argAtIndex(index) collect { case Apply(fun, Literal(str) :: Nil) if fun.symbol == definitions.Symbol_apply => newTermName(str.stringValue) @@ -406,24 +410,24 @@ trait AnnotationInfos extends api.Annotations { self: SymbolTable => class ErroneousAnnotation() extends CompleteAnnotationInfo(ErrorType, Nil, Nil) - /** Extracts symbol of thrown exception from AnnotationInfo. + /** Extracts the type of the thrown exception from an AnnotationInfo. * * Supports both “old-style” `@throws(classOf[Exception])` - * as well as “new-stye” `@throws[Exception]("cause")` annotations. + * as well as “new-style” `@throws[Exception]("cause")` annotations. */ object ThrownException { - def unapply(ann: AnnotationInfo): Option[Symbol] = { + def unapply(ann: AnnotationInfo): Option[Type] = { ann match { case AnnotationInfo(tpe, _, _) if tpe.typeSymbol != ThrowsClass => None // old-style: @throws(classOf[Exception]) (which is throws[T](classOf[Exception])) case AnnotationInfo(_, List(Literal(Constant(tpe: Type))), _) => - Some(tpe.typeSymbol) + Some(tpe) // new-style: @throws[Exception], @throws[Exception]("cause") case AnnotationInfo(TypeRef(_, _, arg :: _), _, _) => - Some(arg.typeSymbol) + Some(arg) case AnnotationInfo(TypeRef(_, _, Nil), _, _) => - Some(ThrowableClass) + Some(ThrowableTpe) } } } |