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Diffstat (limited to 'src/dotty/tools/dotc/core/Definitions.scala')
| -rw-r--r-- | src/dotty/tools/dotc/core/Definitions.scala | 807 |
1 files changed, 0 insertions, 807 deletions
diff --git a/src/dotty/tools/dotc/core/Definitions.scala b/src/dotty/tools/dotc/core/Definitions.scala deleted file mode 100644 index 4b090d9b1..000000000 --- a/src/dotty/tools/dotc/core/Definitions.scala +++ /dev/null @@ -1,807 +0,0 @@ -package dotty.tools -package dotc -package core - -import Types._, Contexts._, Symbols._, Denotations._, SymDenotations._, StdNames._, Names._ -import Flags._, Scopes._, Decorators._, NameOps._, util.Positions._, Periods._ -import unpickleScala2.Scala2Unpickler.ensureConstructor -import scala.annotation.{ switch, meta } -import scala.collection.{ mutable, immutable } -import PartialFunction._ -import collection.mutable -import scala.reflect.api.{ Universe => ApiUniverse } - -object Definitions { - val MaxTupleArity, MaxAbstractFunctionArity = 22 - val MaxFunctionArity = 30 - // Awaiting a definite solution that drops the limit altogether, 30 gives a safety - // margin over the previous 22, so that treecopiers in miniphases are allowed to - // temporarily create larger closures. This is needed in lambda lift where large closures - // are first formed by treecopiers before they are split apart into parameters and - // environment in the lambdalift transform itself. -} - -/** A class defining symbols and types of standard definitions - * - * Note: There's a much nicer design possible once we have implicit functions. - * The idea is explored to some degree in branch wip-definitions (#929): Instead of a type - * and a separate symbol definition, we produce in one line an implicit function from - * Context to Symbol, and possibly also the corresponding type. This cuts down on all - * the duplication encountered here. - * - * wip-definitions tries to do the same with an implicit conversion from a SymbolPerRun - * type to a symbol type. The problem with that is universal equality. Comparisons will - * not trigger the conversion and will therefore likely return false results. - * - * So the branch is put on hold, until we have implicit functions, which will always - * automatically be dereferenced. - */ -class Definitions { - import Definitions._ - - private implicit var ctx: Context = _ - - private def newSymbol[N <: Name](owner: Symbol, name: N, flags: FlagSet, info: Type) = - ctx.newSymbol(owner, name, flags | Permanent, info) - - private def newClassSymbol(owner: Symbol, name: TypeName, flags: FlagSet, infoFn: ClassSymbol => Type) = - ctx.newClassSymbol(owner, name, flags | Permanent, infoFn).entered - - private def newCompleteClassSymbol(owner: Symbol, name: TypeName, flags: FlagSet, parents: List[TypeRef], decls: Scope = newScope) = - ctx.newCompleteClassSymbol(owner, name, flags | Permanent, parents, decls).entered - - private def newTopClassSymbol(name: TypeName, flags: FlagSet, parents: List[TypeRef]) = - completeClass(newCompleteClassSymbol(ScalaPackageClass, name, flags, parents)) - - private def newTypeField(cls: ClassSymbol, name: TypeName, flags: FlagSet, scope: MutableScope) = - scope.enter(newSymbol(cls, name, flags, TypeBounds.empty)) - - private def newTypeParam(cls: ClassSymbol, name: TypeName, flags: FlagSet, scope: MutableScope) = - newTypeField(cls, name, flags | ClassTypeParamCreationFlags, scope) - - private def newSyntheticTypeParam(cls: ClassSymbol, scope: MutableScope, paramFlags: FlagSet, suffix: String = "T0") = - newTypeParam(cls, suffix.toTypeName.expandedName(cls), ExpandedName | paramFlags, scope) - - // NOTE: Ideally we would write `parentConstrs: => Type*` but SIP-24 is only - // implemented in Dotty and not in Scala 2. - // See <http://docs.scala-lang.org/sips/pending/repeated-byname.html>. - private def specialPolyClass(name: TypeName, paramFlags: FlagSet, parentConstrs: => Seq[Type]): ClassSymbol = { - val completer = new LazyType { - def complete(denot: SymDenotation)(implicit ctx: Context): Unit = { - val cls = denot.asClass.classSymbol - val paramDecls = newScope - val typeParam = newSyntheticTypeParam(cls, paramDecls, paramFlags) - def instantiate(tpe: Type) = - if (tpe.typeParams.nonEmpty) tpe.appliedTo(typeParam.typeRef) - else tpe - val parents = parentConstrs.toList map instantiate - val parentRefs: List[TypeRef] = ctx.normalizeToClassRefs(parents, cls, paramDecls) - denot.info = ClassInfo(ScalaPackageClass.thisType, cls, parentRefs, paramDecls) - } - } - newClassSymbol(ScalaPackageClass, name, EmptyFlags, completer) - } - - private def newMethod(cls: ClassSymbol, name: TermName, info: Type, flags: FlagSet = EmptyFlags): TermSymbol = - newSymbol(cls, name.encode, flags | Method, info).entered.asTerm - - private def newAliasType(name: TypeName, tpe: Type, flags: FlagSet = EmptyFlags): TypeSymbol = { - val sym = newSymbol(ScalaPackageClass, name, flags, TypeAlias(tpe)) - ScalaPackageClass.currentPackageDecls.enter(sym) - sym - } - - private def newPolyMethod(cls: ClassSymbol, name: TermName, typeParamCount: Int, - resultTypeFn: PolyType => Type, flags: FlagSet = EmptyFlags) = { - val tparamNames = tpnme.syntheticTypeParamNames(typeParamCount) - val tparamBounds = tparamNames map (_ => TypeBounds.empty) - val ptype = PolyType(tparamNames)(_ => tparamBounds, resultTypeFn) - newMethod(cls, name, ptype, flags) - } - - private def newT1ParameterlessMethod(cls: ClassSymbol, name: TermName, resultTypeFn: PolyType => Type, flags: FlagSet) = - newPolyMethod(cls, name, 1, resultTypeFn, flags) - - private def newT1EmptyParamsMethod(cls: ClassSymbol, name: TermName, resultTypeFn: PolyType => Type, flags: FlagSet) = - newPolyMethod(cls, name, 1, pt => MethodType(Nil, resultTypeFn(pt)), flags) - - private def mkArityArray(name: String, arity: Int, countFrom: Int): Array[TypeRef] = { - val arr = new Array[TypeRef](arity + 1) - for (i <- countFrom to arity) arr(i) = ctx.requiredClassRef(name + i) - arr - } - - private def completeClass(cls: ClassSymbol): ClassSymbol = { - ensureConstructor(cls, EmptyScope) - if (cls.linkedClass.exists) cls.linkedClass.info = NoType - cls - } - - lazy val RootClass: ClassSymbol = ctx.newPackageSymbol( - NoSymbol, nme.ROOT, (root, rootcls) => ctx.rootLoader(root)).moduleClass.asClass - lazy val RootPackage: TermSymbol = ctx.newSymbol( - NoSymbol, nme.ROOTPKG, PackageCreationFlags, TypeRef(NoPrefix, RootClass)) - - lazy val EmptyPackageVal = ctx.newPackageSymbol( - RootClass, nme.EMPTY_PACKAGE, (emptypkg, emptycls) => ctx.rootLoader(emptypkg)).entered - lazy val EmptyPackageClass = EmptyPackageVal.moduleClass.asClass - - /** A package in which we can place all methods that are interpreted specially by the compiler */ - lazy val OpsPackageVal = ctx.newCompletePackageSymbol(RootClass, nme.OPS_PACKAGE).entered - lazy val OpsPackageClass = OpsPackageVal.moduleClass.asClass - - lazy val ScalaPackageVal = ctx.requiredPackage("scala") - lazy val ScalaMathPackageVal = ctx.requiredPackage("scala.math") - lazy val ScalaPackageClass = ScalaPackageVal.moduleClass.asClass - lazy val JavaPackageVal = ctx.requiredPackage("java") - lazy val JavaLangPackageVal = ctx.requiredPackage("java.lang") - // fundamental modules - lazy val SysPackage = ctx.requiredModule("scala.sys.package") - lazy val Sys_errorR = SysPackage.moduleClass.requiredMethodRef(nme.error) - def Sys_error(implicit ctx: Context) = Sys_errorR.symbol - - /** The `scalaShadowing` package is used to safely modify classes and - * objects in scala so that they can be used from dotty. They will - * be visible as members of the `scala` package, replacing any objects - * or classes with the same name. But their binary artifacts are - * in `scalaShadowing` so they don't clash with the same-named `scala` - * members at runtime. - */ - lazy val ScalaShadowingPackageVal = ctx.requiredPackage("scalaShadowing") - lazy val ScalaShadowingPackageClass = ScalaShadowingPackageVal.moduleClass.asClass - - /** Note: We cannot have same named methods defined in Object and Any (and AnyVal, for that matter) - * because after erasure the Any and AnyVal references get remapped to the Object methods - * which would result in a double binding assertion failure. - * Instead we do the following: - * - * - Have some methods exist only in Any, and remap them with the Erasure denotation - * transformer to be owned by Object. - * - Have other methods exist only in Object. - * To achieve this, we synthesize all Any and Object methods; Object methods no longer get - * loaded from a classfile. - * - * There's a remaining question about `getClass`. In Scala2.x `getClass` was handled by compiler magic. - * This is deemed too cumersome for Dotty and therefore right now `getClass` gets no special treatment; - * it's just a method on `Any` which returns the raw type `java.lang.Class`. An alternative - * way to get better `getClass` typing would be to treat `getClass` as a method of a generic - * decorator which gets remapped in a later phase to Object#getClass. Then we could give it - * the right type without changing the typechecker: - * - * implicit class AnyGetClass[T](val x: T) extends AnyVal { - * def getClass: java.lang.Class[T] = ??? - * } - */ - lazy val AnyClass: ClassSymbol = completeClass(newCompleteClassSymbol(ScalaPackageClass, tpnme.Any, Abstract, Nil)) - def AnyType = AnyClass.typeRef - lazy val AnyValClass: ClassSymbol = completeClass(newCompleteClassSymbol(ScalaPackageClass, tpnme.AnyVal, Abstract, List(AnyClass.typeRef))) - def AnyValType = AnyValClass.typeRef - - lazy val Any_== = newMethod(AnyClass, nme.EQ, methOfAny(BooleanType), Final) - lazy val Any_!= = newMethod(AnyClass, nme.NE, methOfAny(BooleanType), Final) - lazy val Any_equals = newMethod(AnyClass, nme.equals_, methOfAny(BooleanType)) - lazy val Any_hashCode = newMethod(AnyClass, nme.hashCode_, MethodType(Nil, IntType)) - lazy val Any_toString = newMethod(AnyClass, nme.toString_, MethodType(Nil, StringType)) - lazy val Any_## = newMethod(AnyClass, nme.HASHHASH, ExprType(IntType), Final) - lazy val Any_getClass = newMethod(AnyClass, nme.getClass_, MethodType(Nil, ClassClass.typeRef.appliedTo(TypeBounds.empty)), Final) - lazy val Any_isInstanceOf = newT1ParameterlessMethod(AnyClass, nme.isInstanceOf_, _ => BooleanType, Final) - lazy val Any_asInstanceOf = newT1ParameterlessMethod(AnyClass, nme.asInstanceOf_, PolyParam(_, 0), Final) - - def AnyMethods = List(Any_==, Any_!=, Any_equals, Any_hashCode, - Any_toString, Any_##, Any_getClass, Any_isInstanceOf, Any_asInstanceOf) - - lazy val ObjectClass: ClassSymbol = { - val cls = ctx.requiredClass("java.lang.Object") - assert(!cls.isCompleted, "race for completing java.lang.Object") - cls.info = ClassInfo(cls.owner.thisType, cls, AnyClass.typeRef :: Nil, newScope) - - // The companion object doesn't really exist, `NoType` is the general - // technique to do that. Here we need to set it before completing - // attempt to load Object's classfile, which causes issue #1648. - val companion = JavaLangPackageVal.info.decl(nme.Object).symbol - companion.info = NoType // to indicate that it does not really exist - - completeClass(cls) - } - def ObjectType = ObjectClass.typeRef - - lazy val AnyRefAlias: TypeSymbol = newAliasType(tpnme.AnyRef, ObjectType) - def AnyRefType = AnyRefAlias.typeRef - - lazy val Object_eq = newMethod(ObjectClass, nme.eq, methOfAnyRef(BooleanType), Final) - lazy val Object_ne = newMethod(ObjectClass, nme.ne, methOfAnyRef(BooleanType), Final) - lazy val Object_synchronized = newPolyMethod(ObjectClass, nme.synchronized_, 1, - pt => MethodType(List(PolyParam(pt, 0)), PolyParam(pt, 0)), Final) - lazy val Object_clone = newMethod(ObjectClass, nme.clone_, MethodType(Nil, ObjectType), Protected) - lazy val Object_finalize = newMethod(ObjectClass, nme.finalize_, MethodType(Nil, UnitType), Protected) - lazy val Object_notify = newMethod(ObjectClass, nme.notify_, MethodType(Nil, UnitType)) - lazy val Object_notifyAll = newMethod(ObjectClass, nme.notifyAll_, MethodType(Nil, UnitType)) - lazy val Object_wait = newMethod(ObjectClass, nme.wait_, MethodType(Nil, UnitType)) - lazy val Object_waitL = newMethod(ObjectClass, nme.wait_, MethodType(LongType :: Nil, UnitType)) - lazy val Object_waitLI = newMethod(ObjectClass, nme.wait_, MethodType(LongType :: IntType :: Nil, UnitType)) - - def ObjectMethods = List(Object_eq, Object_ne, Object_synchronized, Object_clone, - Object_finalize, Object_notify, Object_notifyAll, Object_wait, Object_waitL, Object_waitLI) - - /** Dummy method needed by elimByName */ - lazy val dummyApply = newPolyMethod( - OpsPackageClass, nme.dummyApply, 1, - pt => MethodType(List(FunctionOf(Nil, PolyParam(pt, 0))), PolyParam(pt, 0))) - - /** Method representing a throw */ - lazy val throwMethod = newMethod(OpsPackageClass, nme.THROWkw, - MethodType(List(ThrowableType), NothingType)) - - lazy val NothingClass: ClassSymbol = newCompleteClassSymbol( - ScalaPackageClass, tpnme.Nothing, AbstractFinal, List(AnyClass.typeRef)) - def NothingType = NothingClass.typeRef - lazy val NullClass: ClassSymbol = newCompleteClassSymbol( - ScalaPackageClass, tpnme.Null, AbstractFinal, List(ObjectClass.typeRef)) - def NullType = NullClass.typeRef - - lazy val ScalaPredefModuleRef = ctx.requiredModuleRef("scala.Predef") - def ScalaPredefModule(implicit ctx: Context) = ScalaPredefModuleRef.symbol - - lazy val Predef_conformsR = ScalaPredefModule.requiredMethodRef("$conforms") - def Predef_conforms(implicit ctx: Context) = Predef_conformsR.symbol - lazy val Predef_classOfR = ScalaPredefModule.requiredMethodRef("classOf") - def Predef_classOf(implicit ctx: Context) = Predef_classOfR.symbol - - lazy val ScalaRuntimeModuleRef = ctx.requiredModuleRef("scala.runtime.ScalaRunTime") - def ScalaRuntimeModule(implicit ctx: Context) = ScalaRuntimeModuleRef.symbol - def ScalaRuntimeClass(implicit ctx: Context) = ScalaRuntimeModule.moduleClass.asClass - - def runtimeMethodRef(name: PreName) = ScalaRuntimeModule.requiredMethodRef(name) - def ScalaRuntime_dropR(implicit ctx: Context) = runtimeMethodRef(nme.drop) - def ScalaRuntime_drop(implicit ctx: Context) = ScalaRuntime_dropR.symbol - - lazy val BoxesRunTimeModuleRef = ctx.requiredModuleRef("scala.runtime.BoxesRunTime") - def BoxesRunTimeModule(implicit ctx: Context) = BoxesRunTimeModuleRef.symbol - def BoxesRunTimeClass(implicit ctx: Context) = BoxesRunTimeModule.moduleClass.asClass - lazy val ScalaStaticsModuleRef = ctx.requiredModuleRef("scala.runtime.Statics") - def ScalaStaticsModule(implicit ctx: Context) = ScalaStaticsModuleRef.symbol - def ScalaStaticsClass(implicit ctx: Context) = ScalaStaticsModule.moduleClass.asClass - - def staticsMethodRef(name: PreName) = ScalaStaticsModule.requiredMethodRef(name) - def staticsMethod(name: PreName) = ScalaStaticsModule.requiredMethod(name) - - lazy val DottyPredefModuleRef = ctx.requiredModuleRef("dotty.DottyPredef") - def DottyPredefModule(implicit ctx: Context) = DottyPredefModuleRef.symbol - - def Predef_eqAny(implicit ctx: Context) = DottyPredefModule.requiredMethod(nme.eqAny) - - lazy val DottyArraysModuleRef = ctx.requiredModuleRef("dotty.runtime.Arrays") - def DottyArraysModule(implicit ctx: Context) = DottyArraysModuleRef.symbol - def newGenericArrayMethod(implicit ctx: Context) = DottyArraysModule.requiredMethod("newGenericArray") - def newArrayMethod(implicit ctx: Context) = DottyArraysModule.requiredMethod("newArray") - - lazy val NilModuleRef = ctx.requiredModuleRef("scala.collection.immutable.Nil") - def NilModule(implicit ctx: Context) = NilModuleRef.symbol - - lazy val SingletonClass: ClassSymbol = - // needed as a synthetic class because Scala 2.x refers to it in classfiles - // but does not define it as an explicit class. - newCompleteClassSymbol( - ScalaPackageClass, tpnme.Singleton, PureInterfaceCreationFlags | Final, - List(AnyClass.typeRef), EmptyScope) - - lazy val SeqType: TypeRef = ctx.requiredClassRef("scala.collection.Seq") - def SeqClass(implicit ctx: Context) = SeqType.symbol.asClass - - lazy val Seq_applyR = SeqClass.requiredMethodRef(nme.apply) - def Seq_apply(implicit ctx: Context) = Seq_applyR.symbol - lazy val Seq_headR = SeqClass.requiredMethodRef(nme.head) - def Seq_head(implicit ctx: Context) = Seq_headR.symbol - - lazy val ArrayType: TypeRef = ctx.requiredClassRef("scala.Array") - def ArrayClass(implicit ctx: Context) = ArrayType.symbol.asClass - lazy val Array_applyR = ArrayClass.requiredMethodRef(nme.apply) - def Array_apply(implicit ctx: Context) = Array_applyR.symbol - lazy val Array_updateR = ArrayClass.requiredMethodRef(nme.update) - def Array_update(implicit ctx: Context) = Array_updateR.symbol - lazy val Array_lengthR = ArrayClass.requiredMethodRef(nme.length) - def Array_length(implicit ctx: Context) = Array_lengthR.symbol - lazy val Array_cloneR = ArrayClass.requiredMethodRef(nme.clone_) - def Array_clone(implicit ctx: Context) = Array_cloneR.symbol - lazy val ArrayConstructorR = ArrayClass.requiredMethodRef(nme.CONSTRUCTOR) - def ArrayConstructor(implicit ctx: Context) = ArrayConstructorR.symbol - lazy val ArrayModuleType = ctx.requiredModuleRef("scala.Array") - def ArrayModule(implicit ctx: Context) = ArrayModuleType.symbol.moduleClass.asClass - - - lazy val UnitType: TypeRef = valueTypeRef("scala.Unit", BoxedUnitType, java.lang.Void.TYPE, UnitEnc) - def UnitClass(implicit ctx: Context) = UnitType.symbol.asClass - lazy val BooleanType = valueTypeRef("scala.Boolean", BoxedBooleanType, java.lang.Boolean.TYPE, BooleanEnc) - def BooleanClass(implicit ctx: Context) = BooleanType.symbol.asClass - lazy val Boolean_notR = BooleanClass.requiredMethodRef(nme.UNARY_!) - def Boolean_! = Boolean_notR.symbol - lazy val Boolean_andR = BooleanClass.requiredMethodRef(nme.ZAND) // ### harmonize required... calls - def Boolean_&& = Boolean_andR.symbol - lazy val Boolean_orR = BooleanClass.requiredMethodRef(nme.ZOR) - def Boolean_|| = Boolean_orR.symbol - - lazy val ByteType: TypeRef = valueTypeRef("scala.Byte", BoxedByteType, java.lang.Byte.TYPE, ByteEnc) - def ByteClass(implicit ctx: Context) = ByteType.symbol.asClass - lazy val ShortType: TypeRef = valueTypeRef("scala.Short", BoxedShortType, java.lang.Short.TYPE, ShortEnc) - def ShortClass(implicit ctx: Context) = ShortType.symbol.asClass - lazy val CharType: TypeRef = valueTypeRef("scala.Char", BoxedCharType, java.lang.Character.TYPE, CharEnc) - def CharClass(implicit ctx: Context) = CharType.symbol.asClass - lazy val IntType: TypeRef = valueTypeRef("scala.Int", BoxedIntType, java.lang.Integer.TYPE, IntEnc) - def IntClass(implicit ctx: Context) = IntType.symbol.asClass - lazy val Int_minusR = IntClass.requiredMethodRef(nme.MINUS, List(IntType)) - def Int_- = Int_minusR.symbol - lazy val Int_plusR = IntClass.requiredMethodRef(nme.PLUS, List(IntType)) - def Int_+ = Int_plusR.symbol - lazy val Int_divR = IntClass.requiredMethodRef(nme.DIV, List(IntType)) - def Int_/ = Int_divR.symbol - lazy val Int_mulR = IntClass.requiredMethodRef(nme.MUL, List(IntType)) - def Int_* = Int_mulR.symbol - lazy val Int_eqR = IntClass.requiredMethodRef(nme.EQ, List(IntType)) - def Int_== = Int_eqR.symbol - lazy val Int_geR = IntClass.requiredMethodRef(nme.GE, List(IntType)) - def Int_>= = Int_geR.symbol - lazy val Int_leR = IntClass.requiredMethodRef(nme.LE, List(IntType)) - def Int_<= = Int_leR.symbol - lazy val LongType: TypeRef = valueTypeRef("scala.Long", BoxedLongType, java.lang.Long.TYPE, LongEnc) - def LongClass(implicit ctx: Context) = LongType.symbol.asClass - lazy val Long_XOR_Long = LongType.member(nme.XOR).requiredSymbol( - x => (x is Method) && (x.info.firstParamTypes.head isRef defn.LongClass) - ) - lazy val Long_LSR_Int = LongType.member(nme.LSR).requiredSymbol( - x => (x is Method) && (x.info.firstParamTypes.head isRef defn.IntClass) - ) - lazy val FloatType: TypeRef = valueTypeRef("scala.Float", BoxedFloatType, java.lang.Float.TYPE, FloatEnc) - def FloatClass(implicit ctx: Context) = FloatType.symbol.asClass - lazy val DoubleType: TypeRef = valueTypeRef("scala.Double", BoxedDoubleType, java.lang.Double.TYPE, DoubleEnc) - def DoubleClass(implicit ctx: Context) = DoubleType.symbol.asClass - - lazy val BoxedUnitType: TypeRef = ctx.requiredClassRef("scala.runtime.BoxedUnit") - def BoxedUnitClass(implicit ctx: Context) = BoxedUnitType.symbol.asClass - - def BoxedUnit_UNIT(implicit ctx: Context) = BoxedUnitClass.linkedClass.requiredValue("UNIT") - - lazy val BoxedBooleanType: TypeRef = ctx.requiredClassRef("java.lang.Boolean") - def BoxedBooleanClass(implicit ctx: Context) = BoxedBooleanType.symbol.asClass - lazy val BoxedByteType: TypeRef = ctx.requiredClassRef("java.lang.Byte") - def BoxedByteClass(implicit ctx: Context) = BoxedByteType.symbol.asClass - lazy val BoxedShortType: TypeRef = ctx.requiredClassRef("java.lang.Short") - def BoxedShortClass(implicit ctx: Context) = BoxedShortType.symbol.asClass - lazy val BoxedCharType: TypeRef = ctx.requiredClassRef("java.lang.Character") - def BoxedCharClass(implicit ctx: Context) = BoxedCharType.symbol.asClass - lazy val BoxedIntType: TypeRef = ctx.requiredClassRef("java.lang.Integer") - def BoxedIntClass(implicit ctx: Context) = BoxedIntType.symbol.asClass - lazy val BoxedLongType: TypeRef = ctx.requiredClassRef("java.lang.Long") - def BoxedLongClass(implicit ctx: Context) = BoxedLongType.symbol.asClass - lazy val BoxedFloatType: TypeRef = ctx.requiredClassRef("java.lang.Float") - def BoxedFloatClass(implicit ctx: Context) = BoxedFloatType.symbol.asClass - lazy val BoxedDoubleType: TypeRef = ctx.requiredClassRef("java.lang.Double") - def BoxedDoubleClass(implicit ctx: Context) = BoxedDoubleType.symbol.asClass - - lazy val BoxedBooleanModule = ctx.requiredModule("java.lang.Boolean") - lazy val BoxedByteModule = ctx.requiredModule("java.lang.Byte") - lazy val BoxedShortModule = ctx.requiredModule("java.lang.Short") - lazy val BoxedCharModule = ctx.requiredModule("java.lang.Character") - lazy val BoxedIntModule = ctx.requiredModule("java.lang.Integer") - lazy val BoxedLongModule = ctx.requiredModule("java.lang.Long") - lazy val BoxedFloatModule = ctx.requiredModule("java.lang.Float") - lazy val BoxedDoubleModule = ctx.requiredModule("java.lang.Double") - lazy val BoxedUnitModule = ctx.requiredModule("java.lang.Void") - - lazy val ByNameParamClass2x = specialPolyClass(tpnme.BYNAME_PARAM_CLASS, Covariant, Seq(AnyType)) - lazy val EqualsPatternClass = specialPolyClass(tpnme.EQUALS_PATTERN, EmptyFlags, Seq(AnyType)) - - lazy val RepeatedParamClass = specialPolyClass(tpnme.REPEATED_PARAM_CLASS, Covariant, Seq(ObjectType, SeqType)) - - // fundamental classes - lazy val StringClass = ctx.requiredClass("java.lang.String") - def StringType: Type = StringClass.typeRef - lazy val StringModule = StringClass.linkedClass - - lazy val String_+ = newMethod(StringClass, nme.raw.PLUS, methOfAny(StringType), Final) - lazy val String_valueOf_Object = StringModule.info.member(nme.valueOf).suchThat(_.info.firstParamTypes match { - case List(pt) => (pt isRef AnyClass) || (pt isRef ObjectClass) - case _ => false - }).symbol - - lazy val JavaCloneableClass = ctx.requiredClass("java.lang.Cloneable") - lazy val NullPointerExceptionClass = ctx.requiredClass("java.lang.NullPointerException") - lazy val ClassClass = ctx.requiredClass("java.lang.Class") - lazy val BoxedNumberClass = ctx.requiredClass("java.lang.Number") - lazy val ThrowableClass = ctx.requiredClass("java.lang.Throwable") - lazy val ClassCastExceptionClass = ctx.requiredClass("java.lang.ClassCastException") - lazy val JavaSerializableClass = ctx.requiredClass("java.lang.Serializable") - lazy val ComparableClass = ctx.requiredClass("java.lang.Comparable") - - // in scalac modified to have Any as parent - - lazy val SerializableType: TypeRef = ctx.requiredClassRef("scala.Serializable") - def SerializableClass(implicit ctx: Context) = SerializableType.symbol.asClass - lazy val StringBuilderType: TypeRef = ctx.requiredClassRef("scala.collection.mutable.StringBuilder") - def StringBuilderClass(implicit ctx: Context) = StringBuilderType.symbol.asClass - lazy val MatchErrorType: TypeRef = ctx.requiredClassRef("scala.MatchError") - def MatchErrorClass(implicit ctx: Context) = MatchErrorType.symbol.asClass - - lazy val StringAddType: TypeRef = ctx.requiredClassRef("scala.runtime.StringAdd") - def StringAddClass(implicit ctx: Context) = StringAddType.symbol.asClass - - lazy val StringAdd_plusR = StringAddClass.requiredMethodRef(nme.raw.PLUS) - def StringAdd_+(implicit ctx: Context) = StringAdd_plusR.symbol - - lazy val PartialFunctionType: TypeRef = ctx.requiredClassRef("scala.PartialFunction") - def PartialFunctionClass(implicit ctx: Context) = PartialFunctionType.symbol.asClass - lazy val AbstractPartialFunctionType: TypeRef = ctx.requiredClassRef("scala.runtime.AbstractPartialFunction") - def AbstractPartialFunctionClass(implicit ctx: Context) = AbstractPartialFunctionType.symbol.asClass - lazy val SymbolType: TypeRef = ctx.requiredClassRef("scala.Symbol") - def SymbolClass(implicit ctx: Context) = SymbolType.symbol.asClass - lazy val DynamicType: TypeRef = ctx.requiredClassRef("scala.Dynamic") - def DynamicClass(implicit ctx: Context) = DynamicType.symbol.asClass - lazy val OptionType: TypeRef = ctx.requiredClassRef("scala.Option") - def OptionClass(implicit ctx: Context) = OptionType.symbol.asClass - lazy val ProductType: TypeRef = ctx.requiredClassRef("scala.Product") - def ProductClass(implicit ctx: Context) = ProductType.symbol.asClass - lazy val Product_canEqualR = ProductClass.requiredMethodRef(nme.canEqual_) - def Product_canEqual(implicit ctx: Context) = Product_canEqualR.symbol - lazy val Product_productArityR = ProductClass.requiredMethodRef(nme.productArity) - def Product_productArity(implicit ctx: Context) = Product_productArityR.symbol - lazy val Product_productPrefixR = ProductClass.requiredMethodRef(nme.productPrefix) - def Product_productPrefix(implicit ctx: Context) = Product_productPrefixR.symbol - lazy val LanguageModuleRef = ctx.requiredModule("scala.language") - def LanguageModuleClass(implicit ctx: Context) = LanguageModuleRef.symbol.moduleClass.asClass - lazy val NonLocalReturnControlType: TypeRef = ctx.requiredClassRef("scala.runtime.NonLocalReturnControl") - - lazy val ClassTagType = ctx.requiredClassRef("scala.reflect.ClassTag") - def ClassTagClass(implicit ctx: Context) = ClassTagType.symbol.asClass - def ClassTagModule(implicit ctx: Context) = ClassTagClass.companionModule - - lazy val EqType = ctx.requiredClassRef("scala.Eq") - def EqClass(implicit ctx: Context) = EqType.symbol.asClass - - // Annotation base classes - lazy val AnnotationType = ctx.requiredClassRef("scala.annotation.Annotation") - def AnnotationClass(implicit ctx: Context) = AnnotationType.symbol.asClass - lazy val ClassfileAnnotationType = ctx.requiredClassRef("scala.annotation.ClassfileAnnotation") - def ClassfileAnnotationClass(implicit ctx: Context) = ClassfileAnnotationType.symbol.asClass - lazy val StaticAnnotationType = ctx.requiredClassRef("scala.annotation.StaticAnnotation") - def StaticAnnotationClass(implicit ctx: Context) = StaticAnnotationType.symbol.asClass - - // Annotation classes - lazy val AliasAnnotType = ctx.requiredClassRef("scala.annotation.internal.Alias") - def AliasAnnot(implicit ctx: Context) = AliasAnnotType.symbol.asClass - lazy val AnnotationDefaultAnnotType = ctx.requiredClassRef("scala.annotation.internal.AnnotationDefault") - def AnnotationDefaultAnnot(implicit ctx: Context) = AnnotationDefaultAnnotType.symbol.asClass - lazy val BodyAnnotType = ctx.requiredClassRef("scala.annotation.internal.Body") - def BodyAnnot(implicit ctx: Context) = BodyAnnotType.symbol.asClass - lazy val ChildAnnotType = ctx.requiredClassRef("scala.annotation.internal.Child") - def ChildAnnot(implicit ctx: Context) = ChildAnnotType.symbol.asClass - lazy val CovariantBetweenAnnotType = ctx.requiredClassRef("scala.annotation.internal.CovariantBetween") - def CovariantBetweenAnnot(implicit ctx: Context) = CovariantBetweenAnnotType.symbol.asClass - lazy val ContravariantBetweenAnnotType = ctx.requiredClassRef("scala.annotation.internal.ContravariantBetween") - def ContravariantBetweenAnnot(implicit ctx: Context) = ContravariantBetweenAnnotType.symbol.asClass - lazy val DeprecatedAnnotType = ctx.requiredClassRef("scala.deprecated") - def DeprecatedAnnot(implicit ctx: Context) = DeprecatedAnnotType.symbol.asClass - lazy val ImplicitNotFoundAnnotType = ctx.requiredClassRef("scala.annotation.implicitNotFound") - def ImplicitNotFoundAnnot(implicit ctx: Context) = ImplicitNotFoundAnnotType.symbol.asClass - lazy val InlineAnnotType = ctx.requiredClassRef("scala.inline") - def InlineAnnot(implicit ctx: Context) = InlineAnnotType.symbol.asClass - lazy val InlineParamAnnotType = ctx.requiredClassRef("scala.annotation.internal.InlineParam") - def InlineParamAnnot(implicit ctx: Context) = InlineParamAnnotType.symbol.asClass - lazy val InvariantBetweenAnnotType = ctx.requiredClassRef("scala.annotation.internal.InvariantBetween") - def InvariantBetweenAnnot(implicit ctx: Context) = InvariantBetweenAnnotType.symbol.asClass - lazy val MigrationAnnotType = ctx.requiredClassRef("scala.annotation.migration") - def MigrationAnnot(implicit ctx: Context) = MigrationAnnotType.symbol.asClass - lazy val NativeAnnotType = ctx.requiredClassRef("scala.native") - def NativeAnnot(implicit ctx: Context) = NativeAnnotType.symbol.asClass - lazy val RemoteAnnotType = ctx.requiredClassRef("scala.remote") - def RemoteAnnot(implicit ctx: Context) = RemoteAnnotType.symbol.asClass - lazy val RepeatedAnnotType = ctx.requiredClassRef("scala.annotation.internal.Repeated") - def RepeatedAnnot(implicit ctx: Context) = RepeatedAnnotType.symbol.asClass - lazy val SourceFileAnnotType = ctx.requiredClassRef("scala.annotation.internal.SourceFile") - def SourceFileAnnot(implicit ctx: Context) = SourceFileAnnotType.symbol.asClass - lazy val ScalaSignatureAnnotType = ctx.requiredClassRef("scala.reflect.ScalaSignature") - def ScalaSignatureAnnot(implicit ctx: Context) = ScalaSignatureAnnotType.symbol.asClass - lazy val ScalaLongSignatureAnnotType = ctx.requiredClassRef("scala.reflect.ScalaLongSignature") - def ScalaLongSignatureAnnot(implicit ctx: Context) = ScalaLongSignatureAnnotType.symbol.asClass - lazy val ScalaStrictFPAnnotType = ctx.requiredClassRef("scala.annotation.strictfp") - def ScalaStrictFPAnnot(implicit ctx: Context) = ScalaStrictFPAnnotType.symbol.asClass - lazy val ScalaStaticAnnotType = ctx.requiredClassRef("scala.annotation.static") - def ScalaStaticAnnot(implicit ctx: Context) = ScalaStaticAnnotType.symbol.asClass - lazy val SerialVersionUIDAnnotType = ctx.requiredClassRef("scala.SerialVersionUID") - def SerialVersionUIDAnnot(implicit ctx: Context) = SerialVersionUIDAnnotType.symbol.asClass - lazy val TASTYSignatureAnnotType = ctx.requiredClassRef("scala.annotation.internal.TASTYSignature") - def TASTYSignatureAnnot(implicit ctx: Context) = TASTYSignatureAnnotType.symbol.asClass - lazy val TASTYLongSignatureAnnotType = ctx.requiredClassRef("scala.annotation.internal.TASTYLongSignature") - def TASTYLongSignatureAnnot(implicit ctx: Context) = TASTYLongSignatureAnnotType.symbol.asClass - lazy val TailrecAnnotType = ctx.requiredClassRef("scala.annotation.tailrec") - def TailrecAnnot(implicit ctx: Context) = TailrecAnnotType.symbol.asClass - lazy val SwitchAnnotType = ctx.requiredClassRef("scala.annotation.switch") - def SwitchAnnot(implicit ctx: Context) = SwitchAnnotType.symbol.asClass - lazy val ThrowsAnnotType = ctx.requiredClassRef("scala.throws") - def ThrowsAnnot(implicit ctx: Context) = ThrowsAnnotType.symbol.asClass - lazy val TransientAnnotType = ctx.requiredClassRef("scala.transient") - def TransientAnnot(implicit ctx: Context) = TransientAnnotType.symbol.asClass - lazy val UncheckedAnnotType = ctx.requiredClassRef("scala.unchecked") - def UncheckedAnnot(implicit ctx: Context) = UncheckedAnnotType.symbol.asClass - lazy val UncheckedStableAnnotType = ctx.requiredClassRef("scala.annotation.unchecked.uncheckedStable") - def UncheckedStableAnnot(implicit ctx: Context) = UncheckedStableAnnotType.symbol.asClass - lazy val UncheckedVarianceAnnotType = ctx.requiredClassRef("scala.annotation.unchecked.uncheckedVariance") - def UncheckedVarianceAnnot(implicit ctx: Context) = UncheckedVarianceAnnotType.symbol.asClass - lazy val UnsafeNonvariantAnnotType = ctx.requiredClassRef("scala.annotation.internal.UnsafeNonvariant") - def UnsafeNonvariantAnnot(implicit ctx: Context) = UnsafeNonvariantAnnotType.symbol.asClass - lazy val VolatileAnnotType = ctx.requiredClassRef("scala.volatile") - def VolatileAnnot(implicit ctx: Context) = VolatileAnnotType.symbol.asClass - lazy val FieldMetaAnnotType = ctx.requiredClassRef("scala.annotation.meta.field") - def FieldMetaAnnot(implicit ctx: Context) = FieldMetaAnnotType.symbol.asClass - lazy val GetterMetaAnnotType = ctx.requiredClassRef("scala.annotation.meta.getter") - def GetterMetaAnnot(implicit ctx: Context) = GetterMetaAnnotType.symbol.asClass - lazy val SetterMetaAnnotType = ctx.requiredClassRef("scala.annotation.meta.setter") - def SetterMetaAnnot(implicit ctx: Context) = SetterMetaAnnotType.symbol.asClass - - // convenient one-parameter method types - def methOfAny(tp: Type) = MethodType(List(AnyType), tp) - def methOfAnyVal(tp: Type) = MethodType(List(AnyValType), tp) - def methOfAnyRef(tp: Type) = MethodType(List(ObjectType), tp) - - // Derived types - - def RepeatedParamType = RepeatedParamClass.typeRef - def ThrowableType = ThrowableClass.typeRef - - def ClassType(arg: Type)(implicit ctx: Context) = { - val ctype = ClassClass.typeRef - if (ctx.phase.erasedTypes) ctype else ctype.appliedTo(arg) - } - - /** The enumeration type, goven a value of the enumeration */ - def EnumType(sym: Symbol)(implicit ctx: Context) = - // given (in java): "class A { enum E { VAL1 } }" - // - sym: the symbol of the actual enumeration value (VAL1) - // - .owner: the ModuleClassSymbol of the enumeration (object E) - // - .linkedClass: the ClassSymbol of the enumeration (class E) - sym.owner.linkedClass.typeRef - - object FunctionOf { - def apply(args: List[Type], resultType: Type)(implicit ctx: Context) = - FunctionType(args.length).appliedTo(args ::: resultType :: Nil) - def unapply(ft: Type)(implicit ctx: Context)/*: Option[(List[Type], Type)]*/ = { - // -language:keepUnions difference: unapply needs result type because inferred type - // is Some[(List[Type], Type)] | None, which is not a legal unapply type. - val tsym = ft.typeSymbol - lazy val targs = ft.argInfos - val numArgs = targs.length - 1 - if (numArgs >= 0 && numArgs <= MaxFunctionArity && - (FunctionType(numArgs).symbol == tsym)) Some(targs.init, targs.last) - else None - } - } - - object ArrayOf { - def apply(elem: Type)(implicit ctx: Context) = - if (ctx.erasedTypes) JavaArrayType(elem) - else ArrayType.appliedTo(elem :: Nil) - def unapply(tp: Type)(implicit ctx: Context): Option[Type] = tp.dealias match { - case at: RefinedType if (at isRef ArrayType.symbol) && at.argInfos.length == 1 => Some(at.argInfos.head) - case _ => None - } - } - - /** An extractor for multi-dimensional arrays. - * Note that this will also extract the high bound if an - * element type is a wildcard. E.g. - * - * Array[_ <: Array[_ <: Number]] - * - * would match - * - * MultiArrayOf(<Number>, 2) - */ - object MultiArrayOf { - def apply(elem: Type, ndims: Int)(implicit ctx: Context): Type = - if (ndims == 0) elem else ArrayOf(apply(elem, ndims - 1)) - def unapply(tp: Type)(implicit ctx: Context): Option[(Type, Int)] = tp match { - case ArrayOf(elemtp) => - def recur(elemtp: Type): Option[(Type, Int)] = elemtp.dealias match { - case TypeBounds(lo, hi) => recur(hi) - case MultiArrayOf(finalElemTp, n) => Some(finalElemTp, n + 1) - case _ => Some(elemtp, 1) - } - recur(elemtp) - case _ => - None - } - } - - // ----- Symbol sets --------------------------------------------------- - - lazy val AbstractFunctionType = mkArityArray("scala.runtime.AbstractFunction", MaxAbstractFunctionArity, 0) - val AbstractFunctionClassPerRun = new PerRun[Array[Symbol]](implicit ctx => AbstractFunctionType.map(_.symbol.asClass)) - def AbstractFunctionClass(n: Int)(implicit ctx: Context) = AbstractFunctionClassPerRun()(ctx)(n) - lazy val FunctionType = mkArityArray("scala.Function", MaxFunctionArity, 0) - def FunctionClassPerRun = new PerRun[Array[Symbol]](implicit ctx => FunctionType.map(_.symbol.asClass)) - def FunctionClass(n: Int)(implicit ctx: Context) = FunctionClassPerRun()(ctx)(n) - lazy val Function0_applyR = FunctionType(0).symbol.requiredMethodRef(nme.apply) - def Function0_apply(implicit ctx: Context) = Function0_applyR.symbol - - lazy val TupleType = mkArityArray("scala.Tuple", MaxTupleArity, 2) - lazy val ProductNType = mkArityArray("scala.Product", MaxTupleArity, 0) - - private lazy val FunctionTypes: Set[TypeRef] = FunctionType.toSet - private lazy val TupleTypes: Set[TypeRef] = TupleType.toSet - private lazy val ProductTypes: Set[TypeRef] = ProductNType.toSet - - /** If `cls` is a class in the scala package, its name, otherwise EmptyTypeName */ - def scalaClassName(cls: Symbol)(implicit ctx: Context): TypeName = - if (cls.isClass && cls.owner == ScalaPackageClass) cls.asClass.name else EmptyTypeName - - /** If type `ref` refers to a class in the scala package, its name, otherwise EmptyTypeName */ - def scalaClassName(ref: Type)(implicit ctx: Context): TypeName = scalaClassName(ref.classSymbol) - - private def isVarArityClass(cls: Symbol, prefix: Name) = { - val name = scalaClassName(cls) - name.startsWith(prefix) && name.drop(prefix.length).forall(_.isDigit) - } - - def isBottomClass(cls: Symbol) = - cls == NothingClass || cls == NullClass - def isBottomType(tp: Type) = - tp.derivesFrom(NothingClass) || tp.derivesFrom(NullClass) - - def isFunctionClass(cls: Symbol) = isVarArityClass(cls, tpnme.Function) - def isAbstractFunctionClass(cls: Symbol) = isVarArityClass(cls, tpnme.AbstractFunction) - def isTupleClass(cls: Symbol) = isVarArityClass(cls, tpnme.Tuple) - def isProductClass(cls: Symbol) = isVarArityClass(cls, tpnme.Product) - - val StaticRootImportFns = List[() => TermRef]( - () => JavaLangPackageVal.termRef, - () => ScalaPackageVal.termRef - ) - - val PredefImportFns = List[() => TermRef]( - () => ScalaPredefModuleRef, - () => DottyPredefModuleRef - ) - - lazy val RootImportFns = - if (ctx.settings.YnoImports.value) List.empty[() => TermRef] - else if (ctx.settings.YnoPredef.value) StaticRootImportFns - else StaticRootImportFns ++ PredefImportFns - - lazy val RootImportTypes = RootImportFns.map(_()) - - /** Modules whose members are in the default namespace and their module classes */ - lazy val UnqualifiedOwnerTypes: Set[NamedType] = - RootImportTypes.toSet[NamedType] ++ RootImportTypes.map(_.symbol.moduleClass.typeRef) - - lazy val PhantomClasses = Set[Symbol](AnyClass, AnyValClass, NullClass, NothingClass) - - def isPolymorphicAfterErasure(sym: Symbol) = - (sym eq Any_isInstanceOf) || (sym eq Any_asInstanceOf) - - def isTupleType(tp: Type)(implicit ctx: Context) = { - val arity = tp.dealias.argInfos.length - arity <= MaxTupleArity && TupleType(arity) != null && (tp isRef TupleType(arity).symbol) - } - - def tupleType(elems: List[Type]) = { - TupleType(elems.size).appliedTo(elems) - } - - def isProductSubType(tp: Type)(implicit ctx: Context) = - (tp derivesFrom ProductType.symbol) && tp.baseClasses.exists(isProductClass) - - def isFunctionType(tp: Type)(implicit ctx: Context) = { - val arity = functionArity(tp) - 0 <= arity && arity <= MaxFunctionArity && (tp isRef FunctionType(arity).symbol) - } - - def functionArity(tp: Type)(implicit ctx: Context) = tp.dealias.argInfos.length - 1 - - // ----- primitive value class machinery ------------------------------------------ - - /** This class would also be obviated by the implicit function type design */ - class PerRun[T](generate: Context => T) { - private var current: RunId = NoRunId - private var cached: T = _ - def apply()(implicit ctx: Context): T = { - if (current != ctx.runId) { - cached = generate(ctx) - current = ctx.runId - } - cached - } - } - - lazy val ScalaNumericValueTypeList = List( - ByteType, ShortType, CharType, IntType, LongType, FloatType, DoubleType) - - private lazy val ScalaNumericValueTypes: collection.Set[TypeRef] = ScalaNumericValueTypeList.toSet - private lazy val ScalaValueTypes: collection.Set[TypeRef] = ScalaNumericValueTypes + UnitType + BooleanType - private lazy val ScalaBoxedTypes = ScalaValueTypes map (t => boxedTypes(t.name)) - - val ScalaNumericValueClasses = new PerRun[collection.Set[Symbol]](implicit ctx => ScalaNumericValueTypes.map(_.symbol)) - val ScalaValueClasses = new PerRun[collection.Set[Symbol]](implicit ctx => ScalaValueTypes.map(_.symbol)) - val ScalaBoxedClasses = new PerRun[collection.Set[Symbol]](implicit ctx => ScalaBoxedTypes.map(_.symbol)) - - private val boxedTypes = mutable.Map[TypeName, TypeRef]() - private val valueTypeEnc = mutable.Map[TypeName, PrimitiveClassEnc]() - -// private val unboxedTypeRef = mutable.Map[TypeName, TypeRef]() -// private val javaTypeToValueTypeRef = mutable.Map[Class[_], TypeRef]() -// private val valueTypeNameToJavaType = mutable.Map[TypeName, Class[_]]() - - private def valueTypeRef(name: String, boxed: TypeRef, jtype: Class[_], enc: Int): TypeRef = { - val vcls = ctx.requiredClassRef(name) - boxedTypes(vcls.name) = boxed - valueTypeEnc(vcls.name) = enc -// unboxedTypeRef(boxed.name) = vcls -// javaTypeToValueTypeRef(jtype) = vcls -// valueTypeNameToJavaType(vcls.name) = jtype - vcls - } - - /** The type of the boxed class corresponding to primitive value type `tp`. */ - def boxedType(tp: Type)(implicit ctx: Context): TypeRef = boxedTypes(scalaClassName(tp)) - - def wrapArrayMethodName(elemtp: Type): TermName = { - val cls = elemtp.classSymbol - if (cls.isPrimitiveValueClass) nme.wrapXArray(cls.name) - else if (cls.derivesFrom(ObjectClass) && !cls.isPhantomClass) nme.wrapRefArray - else nme.genericWrapArray - } - - type PrimitiveClassEnc = Int - - val ByteEnc = 2 - val ShortEnc = ByteEnc * 3 - val CharEnc = 5 - val IntEnc = ShortEnc * CharEnc - val LongEnc = IntEnc * 7 - val FloatEnc = LongEnc * 11 - val DoubleEnc = FloatEnc * 13 - val BooleanEnc = 17 - val UnitEnc = 19 - - def isValueSubType(tref1: TypeRef, tref2: TypeRef)(implicit ctx: Context) = - valueTypeEnc(tref2.name) % valueTypeEnc(tref1.name) == 0 - def isValueSubClass(sym1: Symbol, sym2: Symbol) = - valueTypeEnc(sym2.asClass.name) % valueTypeEnc(sym1.asClass.name) == 0 - - // ----- Initialization --------------------------------------------------- - - /** Lists core classes that don't have underlying bytecode, but are synthesized on-the-fly in every reflection universe */ - lazy val syntheticScalaClasses = List( - AnyClass, - AnyRefAlias, - RepeatedParamClass, - ByNameParamClass2x, - AnyValClass, - NullClass, - NothingClass, - SingletonClass, - EqualsPatternClass) - - lazy val syntheticCoreClasses = syntheticScalaClasses ++ List( - EmptyPackageVal, - OpsPackageClass) - - /** Lists core methods that don't have underlying bytecode, but are synthesized on-the-fly in every reflection universe */ - lazy val syntheticCoreMethods = AnyMethods ++ ObjectMethods ++ List(String_+, throwMethod) - - lazy val reservedScalaClassNames: Set[Name] = syntheticScalaClasses.map(_.name).toSet - - private[this] var _isInitialized = false - private def isInitialized = _isInitialized - - def init()(implicit ctx: Context) = { - this.ctx = ctx - if (!_isInitialized) { - // force initialization of every symbol that is synthesized or hijacked by the compiler - val forced = syntheticCoreClasses ++ syntheticCoreMethods ++ ScalaValueClasses() - - // Enter all symbols from the scalaShadowing package in the scala package - for (m <- ScalaShadowingPackageClass.info.decls) - ScalaPackageClass.enter(m) - - _isInitialized = true - } - } -} |