diff options
141 files changed, 2505 insertions, 854 deletions
diff --git a/bincompat-backward.whitelist.conf b/bincompat-backward.whitelist.conf index 076b9bb9aa..6c98dc62a1 100644 --- a/bincompat-backward.whitelist.conf +++ b/bincompat-backward.whitelist.conf @@ -186,6 +186,15 @@ filter { matchName="scala.reflect.runtime.SynchronizedOps.newNestedScope" problemName=MissingMethodProblem }, + // see github.com/scala/scala/pull/3925, SI-8627, SI-6440 + { + matchName="scala.collection.TraversableLike.filterImpl" + problemName=MissingMethodProblem + }, + { + matchName="scala.collection.immutable.Stream.filteredTail" + problemName=MissingMethodProblem + }, // https://github.com/scala/scala/pull/3848 -- SI-8680 { matchName="scala.collection.immutable.Stream.scala$collection$immutable$Stream$$loop$6" diff --git a/bincompat-forward.whitelist.conf b/bincompat-forward.whitelist.conf index 53401eefad..87a59f2d53 100644 --- a/bincompat-forward.whitelist.conf +++ b/bincompat-forward.whitelist.conf @@ -272,6 +272,103 @@ filter { matchName="scala.reflect.api.PredefTypeCreator" problemName=MissingClassProblem }, + // see github.com/scala/scala/pull/3925, SI-8627, SI-6440 + { + matchName="scala.collection.IterableViewLike#AbstractTransformed.filterImpl" + problemName=MissingMethodProblem + }, + { + matchName="scala.collection.AbstractTraversable.filterImpl" + problemName=MissingMethodProblem + }, + { + matchName="scala.collection.TraversableViewLike#AbstractTransformed.filterImpl" + problemName=MissingMethodProblem + }, + { + matchName="scala.collection.TraversableLike.filterImpl" + problemName=MissingMethodProblem + }, + { + matchName="scala.collection.SeqViewLike#AbstractTransformed.filterImpl" + problemName=MissingMethodProblem + }, + { + matchName="scala.collection.immutable.TreeSet.filterImpl" + problemName=MissingMethodProblem + }, + { + matchName="scala.collection.immutable.Stream.filteredTail" + problemName=MissingMethodProblem + }, + { + matchName="scala.collection.immutable.Stream.filterImpl" + problemName=MissingMethodProblem + }, + { + matchName="scala.collection.immutable.Stream.filterImpl" + problemName=MissingMethodProblem + }, + { + matchName="scala.collection.immutable.StringOps.filterImpl" + problemName=MissingMethodProblem + }, + { + matchName="scala.collection.immutable.TreeMap.filterImpl" + problemName=MissingMethodProblem + }, + { + matchName="scala.collection.concurrent.TrieMap.filterImpl" + problemName=MissingMethodProblem + }, + { + matchName="scala.collection.mutable.ArrayOps#ofByte.filterImpl" + problemName=MissingMethodProblem + }, + { + matchName="scala.collection.mutable.ArrayOps#ofLong.filterImpl" + problemName=MissingMethodProblem + }, + { + matchName="scala.collection.mutable.ArrayOps#ofUnit.filterImpl" + problemName=MissingMethodProblem + }, + { + matchName="scala.collection.mutable.ArrayOps#ofInt.filterImpl" + problemName=MissingMethodProblem + }, + { + matchName="scala.collection.mutable.ArrayOps#ofChar.filterImpl" + problemName=MissingMethodProblem + }, + { + matchName="scala.collection.mutable.ArrayOps#ofRef.filterImpl" + problemName=MissingMethodProblem + }, + { + matchName="scala.collection.mutable.ArrayOps#ofDouble.filterImpl" + problemName=MissingMethodProblem + }, + { + matchName="scala.collection.mutable.ArrayOps#ofFloat.filterImpl" + problemName=MissingMethodProblem + }, + { + matchName="scala.collection.mutable.ArrayOps#ofBoolean.filterImpl" + problemName=MissingMethodProblem + }, + { + matchName="scala.collection.mutable.ArrayOps#ofShort.filterImpl" + problemName=MissingMethodProblem + }, + { + matchName="scala.collection.mutable.TreeSet.filterImpl" + problemName=MissingMethodProblem + }, + { + matchName="scala.reflect.io.AbstractFile.filterImpl" + problemName=MissingMethodProblem + }, // https://github.com/scala/scala/pull/3848 -- SI-8680 { matchName="scala.collection.immutable.Stream.scala$collection$immutable$Stream$$loop$6" diff --git a/build.number b/build.number index 21ce660958..142ae5027d 100644 --- a/build.number +++ b/build.number @@ -1,7 +1,7 @@ #Tue Sep 11 19:21:09 CEST 2007 version.major=2 -version.minor=11 -version.patch=3 +version.minor=12 +version.patch=0 # This is the -N part of a version. if it's 0, it's dropped from maven versions. version.bnum=0 @@ -1537,8 +1537,9 @@ TODO: <target name="test.bc-opt" description="Optimized version of test.bc."> <optimized name="test.bc"/></target> <target name="test.bc" depends="bc.prepare, pack.lib, pack.reflect" unless="test.bc.skip"> - <bc.check project="library"/> - <bc.check project="reflect"/> + <echo message="binary compatibility testing disabled in the 2.12.x branch"/> + <!-- <bc.check project="library"/> --> + <!-- <bc.check project="reflect"/> --> </target> <!-- =========================================================================== diff --git a/src/compiler/scala/tools/nsc/backend/icode/GenICode.scala b/src/compiler/scala/tools/nsc/backend/icode/GenICode.scala index d9f56b47fa..a1cec2ee0b 100644 --- a/src/compiler/scala/tools/nsc/backend/icode/GenICode.scala +++ b/src/compiler/scala/tools/nsc/backend/icode/GenICode.scala @@ -1138,7 +1138,7 @@ abstract class GenICode extends SubComponent { // a package here, check if there's a package object. val sym = ( if (!tree.symbol.isPackageClass) tree.symbol - else tree.symbol.info.member(nme.PACKAGE) match { + else tree.symbol.info.packageObject match { case NoSymbol => abort("Cannot use package as value: " + tree) case s => devWarning(s"Found ${tree.symbol} where a package object is required. Converting to ${s.moduleClass}") diff --git a/src/compiler/scala/tools/nsc/backend/jvm/BCodeBodyBuilder.scala b/src/compiler/scala/tools/nsc/backend/jvm/BCodeBodyBuilder.scala index daf36ce374..89d7acaa11 100644 --- a/src/compiler/scala/tools/nsc/backend/jvm/BCodeBodyBuilder.scala +++ b/src/compiler/scala/tools/nsc/backend/jvm/BCodeBodyBuilder.scala @@ -915,7 +915,7 @@ abstract class BCodeBodyBuilder extends BCodeSkelBuilder { def genLoadModule(tree: Tree): BType = { val module = ( if (!tree.symbol.isPackageClass) tree.symbol - else tree.symbol.info.member(nme.PACKAGE) match { + else tree.symbol.info.packageObject match { case NoSymbol => abort(s"SI-5604: Cannot use package as value: $tree") case s => abort(s"SI-5604: found package class where package object expected: $tree") } diff --git a/src/compiler/scala/tools/nsc/transform/ExplicitOuter.scala b/src/compiler/scala/tools/nsc/transform/ExplicitOuter.scala index c291961447..e47fdac938 100644 --- a/src/compiler/scala/tools/nsc/transform/ExplicitOuter.scala +++ b/src/compiler/scala/tools/nsc/transform/ExplicitOuter.scala @@ -446,8 +446,10 @@ abstract class ExplicitOuter extends InfoTransform // // See SI-6552 for an example of why `sym.owner.enclMethod hasAnnotation ScalaInlineClass` // is not suitable; if we make a method-local class non-private, it mangles outer pointer names. - if (currentClass != sym.owner || - (closestEnclMethod(currentOwner) hasAnnotation ScalaInlineClass)) + def enclMethodIsInline = closestEnclMethod(currentOwner) hasAnnotation ScalaInlineClass + // SI-8710 The extension method condition reflects our knowledge that a call to `new Meter(12).privateMethod` + // with later be rewritten (in erasure) to `Meter.privateMethod$extension(12)`. + if ((currentClass != sym.owner || enclMethodIsInline) && !sym.isMethodWithExtension) sym.makeNotPrivate(sym.owner) val qsym = qual.tpe.widen.typeSymbol diff --git a/src/compiler/scala/tools/nsc/transform/ExtensionMethods.scala b/src/compiler/scala/tools/nsc/transform/ExtensionMethods.scala index 228c9da624..6349fc3fb9 100644 --- a/src/compiler/scala/tools/nsc/transform/ExtensionMethods.scala +++ b/src/compiler/scala/tools/nsc/transform/ExtensionMethods.scala @@ -208,7 +208,7 @@ abstract class ExtensionMethods extends Transform with TypingTransformers { def makeExtensionMethodSymbol = { val extensionName = extensionNames(origMeth).head.toTermName val extensionMeth = ( - companion.moduleClass.newMethod(extensionName, tree.pos.focus, origMeth.flags & ~OVERRIDE & ~PROTECTED | FINAL) + companion.moduleClass.newMethod(extensionName, tree.pos.focus, origMeth.flags & ~OVERRIDE & ~PROTECTED & ~PRIVATE & ~LOCAL | FINAL) setAnnotations origMeth.annotations ) origMeth.removeAnnotation(TailrecClass) // it's on the extension method, now. diff --git a/src/compiler/scala/tools/nsc/typechecker/ConstantFolder.scala b/src/compiler/scala/tools/nsc/typechecker/ConstantFolder.scala index 56ed0ee16c..2f4771e9d4 100644 --- a/src/compiler/scala/tools/nsc/typechecker/ConstantFolder.scala +++ b/src/compiler/scala/tools/nsc/typechecker/ConstantFolder.scala @@ -75,7 +75,7 @@ abstract class ConstantFolder { case nme.AND => Constant(x.booleanValue & y.booleanValue) case nme.EQ => Constant(x.booleanValue == y.booleanValue) case nme.NE => Constant(x.booleanValue != y.booleanValue) - case _ => null + case _ => null } private def foldSubrangeOp(op: Name, x: Constant, y: Constant): Constant = op match { case nme.OR => Constant(x.intValue | y.intValue) @@ -95,14 +95,20 @@ abstract class ConstantFolder { case nme.MUL => Constant(x.intValue * y.intValue) case nme.DIV => Constant(x.intValue / y.intValue) case nme.MOD => Constant(x.intValue % y.intValue) - case _ => null + case _ => null } private def foldLongOp(op: Name, x: Constant, y: Constant): Constant = op match { case nme.OR => Constant(x.longValue | y.longValue) case nme.XOR => Constant(x.longValue ^ y.longValue) case nme.AND => Constant(x.longValue & y.longValue) - case nme.LSL => Constant(x.longValue << y.longValue) + case nme.LSL if x.tag <= IntTag + => Constant(x.intValue << y.longValue) + case nme.LSL => Constant(x.longValue << y.longValue) + case nme.LSR if x.tag <= IntTag + => Constant(x.intValue >>> y.longValue) case nme.LSR => Constant(x.longValue >>> y.longValue) + case nme.ASR if x.tag <= IntTag + => Constant(x.intValue >> y.longValue) case nme.ASR => Constant(x.longValue >> y.longValue) case nme.EQ => Constant(x.longValue == y.longValue) case nme.NE => Constant(x.longValue != y.longValue) @@ -115,7 +121,7 @@ abstract class ConstantFolder { case nme.MUL => Constant(x.longValue * y.longValue) case nme.DIV => Constant(x.longValue / y.longValue) case nme.MOD => Constant(x.longValue % y.longValue) - case _ => null + case _ => null } private def foldFloatOp(op: Name, x: Constant, y: Constant): Constant = op match { case nme.EQ => Constant(x.floatValue == y.floatValue) @@ -129,7 +135,7 @@ abstract class ConstantFolder { case nme.MUL => Constant(x.floatValue * y.floatValue) case nme.DIV => Constant(x.floatValue / y.floatValue) case nme.MOD => Constant(x.floatValue % y.floatValue) - case _ => null + case _ => null } private def foldDoubleOp(op: Name, x: Constant, y: Constant): Constant = op match { case nme.EQ => Constant(x.doubleValue == y.doubleValue) @@ -143,7 +149,7 @@ abstract class ConstantFolder { case nme.MUL => Constant(x.doubleValue * y.doubleValue) case nme.DIV => Constant(x.doubleValue / y.doubleValue) case nme.MOD => Constant(x.doubleValue % y.doubleValue) - case _ => null + case _ => null } private def foldBinop(op: Name, x: Constant, y: Constant): Constant = { @@ -162,7 +168,7 @@ abstract class ConstantFolder { case _ => null } catch { - case ex: ArithmeticException => null + case _: ArithmeticException => null } } } diff --git a/src/compiler/scala/tools/nsc/typechecker/Contexts.scala b/src/compiler/scala/tools/nsc/typechecker/Contexts.scala index eb29ccf4e1..da0ae4ee79 100644 --- a/src/compiler/scala/tools/nsc/typechecker/Contexts.scala +++ b/src/compiler/scala/tools/nsc/typechecker/Contexts.scala @@ -808,10 +808,11 @@ trait Contexts { self: Analyzer => private def collectImplicitImports(imp: ImportInfo): List[ImplicitInfo] = { val qual = imp.qual + val qualSym = qual.tpe.typeSymbol val pre = - if (qual.tpe.typeSymbol.isPackageClass) + if (qualSym.isPackageClass) // SI-6225 important if the imported symbol is inherited by the the package object. - singleType(qual.tpe, qual.tpe member nme.PACKAGE) + qualSym.packageObject.typeOfThis else qual.tpe def collect(sels: List[ImportSelector]): List[ImplicitInfo] = sels match { @@ -884,7 +885,8 @@ trait Contexts { self: Analyzer => Some(collectImplicitImports(imports.head)) } else if (owner.isPackageClass) { // the corresponding package object may contain implicit members. - Some(collectImplicits(owner.tpe.implicitMembers, owner.tpe)) + val pre = owner.packageObject.typeOfThis + Some(collectImplicits(pre.implicitMembers, pre)) } else Some(Nil) } @@ -954,52 +956,11 @@ trait Contexts { self: Analyzer => private def importedAccessibleSymbol(imp: ImportInfo, name: Name, requireExplicit: Boolean): Symbol = imp.importedSymbol(name, requireExplicit) filter (s => isAccessible(s, imp.qual.tpe, superAccess = false)) - /** Is `sym` defined in package object of package `pkg`? - * Since sym may be defined in some parent of the package object, - * we cannot inspect its owner only; we have to go through the - * info of the package object. However to avoid cycles we'll check - * what other ways we can before pushing that way. + /** Must `sym` defined in package object of package `pkg`, if + * it selected from a prefix with `pkg` as its type symbol? */ - def isInPackageObject(sym: Symbol, pkg: Symbol): Boolean = { - def uninitialized(what: String) = { - log(s"Cannot look for $sym in package object of $pkg; $what is not initialized.") - false - } - def pkgClass = if (pkg.isTerm) pkg.moduleClass else pkg - def matchesInfo = ( - // need to be careful here to not get a cyclic reference during bootstrap - if (pkg.isInitialized) { - val module = pkg.info member nme.PACKAGEkw - if (module.isInitialized) - module.info.member(sym.name).alternatives contains sym - else - uninitialized("" + module) - } - else uninitialized("" + pkg) - ) - def inPackageObject(sym: Symbol) = ( - // To be in the package object, one of these must be true: - // 1) sym.owner is a package object class, and sym.owner.owner is the package class for `pkg` - // 2) sym.owner is inherited by the correct package object class - // We try to establish 1) by inspecting the owners directly, and then we try - // to rule out 2), and only if both those fail do we resort to looking in the info. - !sym.hasPackageFlag && sym.owner.exists && ( - if (sym.owner.isPackageObjectClass) - sym.owner.owner == pkgClass - else - !sym.owner.isPackageClass && matchesInfo - ) - ) - - // An overloaded symbol might not have the expected owner! - // The alternatives must be inspected directly. - pkgClass.isPackageClass && ( - if (sym.isOverloaded) - sym.alternatives forall (isInPackageObject(_, pkg)) - else - inPackageObject(sym) - ) - } + def isInPackageObject(sym: Symbol, pkg: Symbol): Boolean = + pkg.isPackage && sym.owner != pkg def isNameInScope(name: Name) = lookupSymbol(name, _ => true).isSuccess diff --git a/src/compiler/scala/tools/nsc/typechecker/Implicits.scala b/src/compiler/scala/tools/nsc/typechecker/Implicits.scala index 74c28122a1..7ed4fe1f88 100644 --- a/src/compiler/scala/tools/nsc/typechecker/Implicits.scala +++ b/src/compiler/scala/tools/nsc/typechecker/Implicits.scala @@ -1012,15 +1012,12 @@ trait Implicits { } case None => if (pre.isStable && !pre.typeSymbol.isExistentiallyBound) { - val companion = companionSymbolOf(sym, context) - companion.moduleClass match { - case mc: ModuleClassSymbol => - val infos = - for (im <- mc.implicitMembers.toList) yield new ImplicitInfo(im.name, singleType(pre, companion), im) - if (infos.nonEmpty) - infoMap += (sym -> infos) - case _ => - } + val pre1 = + if (sym.isPackageClass) sym.packageObject.typeOfThis + else singleType(pre, companionSymbolOf(sym, context)) + val infos = pre1.implicitMembers.iterator.map(mem => new ImplicitInfo(mem.name, pre1, mem)).toList + if (infos.nonEmpty) + infoMap += (sym -> infos) } val bts = tp.baseTypeSeq var i = 1 diff --git a/src/compiler/scala/tools/nsc/typechecker/SyntheticMethods.scala b/src/compiler/scala/tools/nsc/typechecker/SyntheticMethods.scala index bedca88974..26517587f3 100644 --- a/src/compiler/scala/tools/nsc/typechecker/SyntheticMethods.scala +++ b/src/compiler/scala/tools/nsc/typechecker/SyntheticMethods.scala @@ -84,24 +84,6 @@ trait SyntheticMethods extends ast.TreeDSL { def accessors = clazz.caseFieldAccessors val arity = accessors.size - // If this is ProductN[T1, T2, ...], accessorLub is the lub of T1, T2, ..., . - // !!! Hidden behind -Xexperimental due to bummer type inference bugs. - // Refining from Iterator[Any] leads to types like - // - // Option[Int] { def productIterator: Iterator[String] } - // - // appearing legitimately, but this breaks invariant places - // like Tags and Arrays which are not robust and infer things - // which they shouldn't. - val accessorLub = ( - if (settings.Xexperimental) { - global.lub(accessors map (_.tpe.finalResultType)) match { - case RefinedType(parents, decls) if !decls.isEmpty => intersectionType(parents) - case tp => tp - } - } - else AnyTpe - ) def forwardToRuntime(method: Symbol): Tree = forwardMethod(method, getMember(ScalaRunTimeModule, (method.name prepend "_")))(mkThis :: _) @@ -122,8 +104,8 @@ trait SyntheticMethods extends ast.TreeDSL { } } def productIteratorMethod = { - createMethod(nme.productIterator, iteratorOfType(accessorLub))(_ => - gen.mkMethodCall(ScalaRunTimeModule, nme.typedProductIterator, List(accessorLub), List(mkThis)) + createMethod(nme.productIterator, iteratorOfType(AnyTpe))(_ => + gen.mkMethodCall(ScalaRunTimeModule, nme.typedProductIterator, List(AnyTpe), List(mkThis)) ) } @@ -243,7 +225,7 @@ trait SyntheticMethods extends ast.TreeDSL { List( Product_productPrefix -> (() => constantNullary(nme.productPrefix, clazz.name.decode)), Product_productArity -> (() => constantNullary(nme.productArity, arity)), - Product_productElement -> (() => perElementMethod(nme.productElement, accessorLub)(mkThisSelect)), + Product_productElement -> (() => perElementMethod(nme.productElement, AnyTpe)(mkThisSelect)), Product_iterator -> (() => productIteratorMethod), Product_canEqual -> (() => canEqualMethod) // This is disabled pending a reimplementation which doesn't add any @@ -377,7 +359,14 @@ trait SyntheticMethods extends ast.TreeDSL { for (ddef @ DefDef(_, _, _, _, _, _) <- templ.body ; if isRewrite(ddef.symbol)) { val original = ddef.symbol - val newAcc = deriveMethod(ddef.symbol, name => context.unit.freshTermName(name + "$")) { newAcc => + val i = original.owner.caseFieldAccessors.indexOf(original) + def freshAccessorName = { + devWarning(s"Unable to find $original among case accessors of ${original.owner}: ${original.owner.caseFieldAccessors}") + context.unit.freshTermName(original.name + "$") + } + def nameSuffixedByParamIndex = original.name.append(nme.CASE_ACCESSOR + "$" + i).toTermName + val newName = if (i < 0) freshAccessorName else nameSuffixedByParamIndex + val newAcc = deriveMethod(ddef.symbol, name => newName) { newAcc => newAcc.makePublic newAcc resetFlag (ACCESSOR | PARAMACCESSOR | OVERRIDE) ddef.rhs.duplicate diff --git a/src/compiler/scala/tools/nsc/typechecker/Typers.scala b/src/compiler/scala/tools/nsc/typechecker/Typers.scala index aae2d24b32..20db85e665 100644 --- a/src/compiler/scala/tools/nsc/typechecker/Typers.scala +++ b/src/compiler/scala/tools/nsc/typechecker/Typers.scala @@ -538,7 +538,11 @@ trait Typers extends Adaptations with Tags with TypersTracking with PatternTyper } val qual = typedQualifier { atPos(tree.pos.makeTransparent) { tree match { - case Ident(_) => Ident(rootMirror.getPackageObjectWithMember(pre, sym)) + case Ident(_) => + val packageObject = + if (sym.owner.isModuleClass) sym.owner.sourceModule // historical optimization, perhaps no longer needed + else pre.typeSymbol.packageObject + Ident(packageObject) case Select(qual, _) => Select(qual, nme.PACKAGEkw) case SelectFromTypeTree(qual, _) => Select(qual, nme.PACKAGEkw) } diff --git a/src/eclipse/partest/.classpath b/src/eclipse/partest/.classpath index 7f28868d95..7e2f119193 100644 --- a/src/eclipse/partest/.classpath +++ b/src/eclipse/partest/.classpath @@ -5,7 +5,7 @@ <classpathentry combineaccessrules="false" kind="src" path="/repl"/> <classpathentry kind="var" path="M2_REPO/com/googlecode/java-diff-utils/diffutils/1.3.0/diffutils-1.3.0.jar"/> <classpathentry kind="var" path="M2_REPO/org/scala-sbt/test-interface/1.0/test-interface-1.0.jar"/> - <classpathentry kind="var" path="M2_REPO/org/scala-lang/modules/scala-partest_2.11.0-M7/1.0.0-RC8/scala-partest_2.11.0-M7-1.0.0-RC8.jar"/> + <classpathentry kind="var" path="M2_REPO/org/scala-lang/modules/scala-partest_2.11/1.0.0/scala-partest_2.11-1.0.0.jar"/> <classpathentry kind="var" path="SCALA_BASEDIR/lib/ant/ant.jar"/> <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/> <classpathentry combineaccessrules="false" kind="src" path="/scala-compiler"/> diff --git a/src/eclipse/repl/.classpath b/src/eclipse/repl/.classpath index 8ff9aabfbf..cbaabb9af1 100644 --- a/src/eclipse/repl/.classpath +++ b/src/eclipse/repl/.classpath @@ -3,7 +3,6 @@ <classpathentry kind="src" path="repl"/> <classpathentry combineaccessrules="false" kind="src" path="/asm"/> <classpathentry kind="var" path="M2_REPO/jline/jline/2.12/jline-2.12.jar"/> - <!-- <classpathentry kind="var" path="SCALA_BASEDIR/build/deps/repl/jline-2.12.jar"/> --> <classpathentry combineaccessrules="false" kind="src" path="/scala-compiler"/> <classpathentry combineaccessrules="false" kind="src" path="/scala-library"/> <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/> diff --git a/src/eclipse/scaladoc/.classpath b/src/eclipse/scaladoc/.classpath index c8f0e89b8a..ee6427176a 100644 --- a/src/eclipse/scaladoc/.classpath +++ b/src/eclipse/scaladoc/.classpath @@ -6,8 +6,8 @@ <classpathentry combineaccessrules="false" kind="src" path="/scala-compiler"/> <classpathentry combineaccessrules="false" kind="src" path="/scala-library"/> <classpathentry combineaccessrules="false" kind="src" path="/partest-extras"/> - <classpathentry kind="var" path="M2_REPO/org/scala-lang/modules/scala-xml_2.11.0-M7/1.0.0-RC7/scala-xml_2.11.0-M7-1.0.0-RC7.jar"/> - <classpathentry kind="var" path="M2_REPO/org/scala-lang/modules/scala-parser-combinators_2.11.0-M7/1.0.0-RC5/scala-parser-combinators_2.11.0-M7-1.0.0-RC5.jar"/> - <classpathentry kind="var" path="M2_REPO/org/scala-lang/modules/scala-partest_2.11.0-M7/1.0.0-RC8/scala-partest_2.11.0-M7-1.0.0-RC8.jar"/> + <classpathentry kind="var" path="M2_REPO/org/scala-lang/modules/scala-xml_2.11/1.0.2/scala-xml_2.11-1.0.2.jar"/> + <classpathentry kind="var" path="M2_REPO/org/scala-lang/modules/scala-parser-combinators_2.11/1.0.1/scala-parser-combinators_2.11-1.0.1.jar"/> + <classpathentry kind="var" path="M2_REPO/org/scala-lang/modules/scala-partest_2.11/1.0.0/scala-partest_2.11-1.0.0.jar"/> <classpathentry kind="output" path="build-quick-scaladoc"/> </classpath> diff --git a/src/forkjoin/scala/concurrent/forkjoin/ForkJoinPool.java b/src/forkjoin/scala/concurrent/forkjoin/ForkJoinPool.java index 6578504155..9bd378c61c 100644 --- a/src/forkjoin/scala/concurrent/forkjoin/ForkJoinPool.java +++ b/src/forkjoin/scala/concurrent/forkjoin/ForkJoinPool.java @@ -23,6 +23,7 @@ import java.util.concurrent.TimeUnit; * @since 1.8 * @author Doug Lea */ +@Deprecated /*public*/ abstract class CountedCompleter<T> extends ForkJoinTask<T> { private static final long serialVersionUID = 5232453752276485070L; @@ -471,6 +472,7 @@ import java.util.concurrent.TimeUnit; * @since 1.7 * @author Doug Lea */ +@Deprecated public class ForkJoinPool extends AbstractExecutorService { /* @@ -3578,6 +3580,7 @@ public class ForkJoinPool extends AbstractExecutorService { * } * }}</pre> */ + @Deprecated public static interface ManagedBlocker { /** * Possibly blocks the current thread, for example waiting for diff --git a/src/forkjoin/scala/concurrent/forkjoin/ForkJoinTask.java b/src/forkjoin/scala/concurrent/forkjoin/ForkJoinTask.java index fd1e132b07..b4f5c24ca9 100644 --- a/src/forkjoin/scala/concurrent/forkjoin/ForkJoinTask.java +++ b/src/forkjoin/scala/concurrent/forkjoin/ForkJoinTask.java @@ -180,6 +180,7 @@ import java.lang.reflect.Constructor; * @since 1.7 * @author Doug Lea */ +@Deprecated public abstract class ForkJoinTask<V> implements Future<V>, Serializable { /* @@ -391,6 +392,7 @@ public abstract class ForkJoinTask<V> implements Future<V>, Serializable { * any ForkJoinPool will call helpExpungeStaleExceptions when its * pool becomes isQuiescent. */ + @Deprecated static final class ExceptionNode extends WeakReference<ForkJoinTask<?>> { final Throwable ex; ExceptionNode next; @@ -1330,6 +1332,7 @@ public abstract class ForkJoinTask<V> implements Future<V>, Serializable { * to be compliant with AbstractExecutorService constraints * when used in ForkJoinPool. */ + @Deprecated static final class AdaptedRunnable<T> extends ForkJoinTask<T> implements RunnableFuture<T> { final Runnable runnable; @@ -1349,6 +1352,7 @@ public abstract class ForkJoinTask<V> implements Future<V>, Serializable { /** * Adaptor for Runnables without results */ + @Deprecated static final class AdaptedRunnableAction extends ForkJoinTask<Void> implements RunnableFuture<Void> { final Runnable runnable; @@ -1366,6 +1370,7 @@ public abstract class ForkJoinTask<V> implements Future<V>, Serializable { /** * Adaptor for Callables */ + @Deprecated static final class AdaptedCallable<T> extends ForkJoinTask<T> implements RunnableFuture<T> { final Callable<? extends T> callable; diff --git a/src/forkjoin/scala/concurrent/forkjoin/ForkJoinWorkerThread.java b/src/forkjoin/scala/concurrent/forkjoin/ForkJoinWorkerThread.java index e62fc6eb71..e00fb5cc43 100644 --- a/src/forkjoin/scala/concurrent/forkjoin/ForkJoinWorkerThread.java +++ b/src/forkjoin/scala/concurrent/forkjoin/ForkJoinWorkerThread.java @@ -20,6 +20,7 @@ package scala.concurrent.forkjoin; * @since 1.7 * @author Doug Lea */ +@Deprecated public class ForkJoinWorkerThread extends Thread { /* * ForkJoinWorkerThreads are managed by ForkJoinPools and perform diff --git a/src/forkjoin/scala/concurrent/forkjoin/LinkedTransferQueue.java b/src/forkjoin/scala/concurrent/forkjoin/LinkedTransferQueue.java index 07e81b395d..47d52af895 100644 --- a/src/forkjoin/scala/concurrent/forkjoin/LinkedTransferQueue.java +++ b/src/forkjoin/scala/concurrent/forkjoin/LinkedTransferQueue.java @@ -53,6 +53,7 @@ import java.util.concurrent.locks.LockSupport; * @author Doug Lea * @param <E> the type of elements held in this collection */ +@Deprecated public class LinkedTransferQueue<E> extends AbstractQueue<E> implements TransferQueue<E>, java.io.Serializable { private static final long serialVersionUID = -3223113410248163686L; @@ -416,6 +417,7 @@ public class LinkedTransferQueue<E> extends AbstractQueue<E> * unnecessary ordering constraints: Writes that are intrinsically * ordered wrt other accesses or CASes use simple relaxed forms. */ + @Deprecated static final class Node { final boolean isData; // false if this is a request node volatile Object item; // initially non-null if isData; CASed to match @@ -789,6 +791,7 @@ public class LinkedTransferQueue<E> extends AbstractQueue<E> return count; } + @Deprecated final class Itr implements Iterator<E> { private Node nextNode; // next node to return item for private E nextItem; // the corresponding item diff --git a/src/forkjoin/scala/concurrent/forkjoin/RecursiveAction.java b/src/forkjoin/scala/concurrent/forkjoin/RecursiveAction.java index 1e7cdd952d..f4a77f0f61 100644 --- a/src/forkjoin/scala/concurrent/forkjoin/RecursiveAction.java +++ b/src/forkjoin/scala/concurrent/forkjoin/RecursiveAction.java @@ -133,6 +133,7 @@ package scala.concurrent.forkjoin; * @since 1.7 * @author Doug Lea */ +@Deprecated public abstract class RecursiveAction extends ForkJoinTask<Void> { private static final long serialVersionUID = 5232453952276485070L; diff --git a/src/forkjoin/scala/concurrent/forkjoin/RecursiveTask.java b/src/forkjoin/scala/concurrent/forkjoin/RecursiveTask.java index d1e1547143..097b7cda1f 100644 --- a/src/forkjoin/scala/concurrent/forkjoin/RecursiveTask.java +++ b/src/forkjoin/scala/concurrent/forkjoin/RecursiveTask.java @@ -36,6 +36,7 @@ package scala.concurrent.forkjoin; * @since 1.7 * @author Doug Lea */ +@Deprecated public abstract class RecursiveTask<V> extends ForkJoinTask<V> { private static final long serialVersionUID = 5232453952276485270L; diff --git a/src/forkjoin/scala/concurrent/forkjoin/ThreadLocalRandom.java b/src/forkjoin/scala/concurrent/forkjoin/ThreadLocalRandom.java index 19237c9092..3ea1af66bc 100644 --- a/src/forkjoin/scala/concurrent/forkjoin/ThreadLocalRandom.java +++ b/src/forkjoin/scala/concurrent/forkjoin/ThreadLocalRandom.java @@ -32,6 +32,7 @@ import java.util.Random; * @since 1.7 * @author Doug Lea */ +@Deprecated public class ThreadLocalRandom extends Random { // same constants as Random, but must be redeclared because private private static final long multiplier = 0x5DEECE66DL; @@ -80,6 +81,7 @@ public class ThreadLocalRandom extends Random { * * @return the current thread's {@code ThreadLocalRandom} */ + @Deprecated public static ThreadLocalRandom current() { return localRandom.get(); } diff --git a/src/forkjoin/scala/concurrent/forkjoin/TransferQueue.java b/src/forkjoin/scala/concurrent/forkjoin/TransferQueue.java index 7d149c7ae5..4fcd8ea601 100644 --- a/src/forkjoin/scala/concurrent/forkjoin/TransferQueue.java +++ b/src/forkjoin/scala/concurrent/forkjoin/TransferQueue.java @@ -37,6 +37,7 @@ import java.util.concurrent.*; * @author Doug Lea * @param <E> the type of elements held in this collection */ +@Deprecated public interface TransferQueue<E> extends BlockingQueue<E> { /** * Transfers the element to a waiting consumer immediately, if possible. diff --git a/src/forkjoin/scala/concurrent/util/Unsafe.java b/src/forkjoin/scala/concurrent/util/Unsafe.java index ef893c94d9..d82e4bbdd5 100644 --- a/src/forkjoin/scala/concurrent/util/Unsafe.java +++ b/src/forkjoin/scala/concurrent/util/Unsafe.java @@ -7,14 +7,12 @@ \* */ package scala.concurrent.util; - - - import java.lang.reflect.Field; - +@Deprecated public final class Unsafe { + @Deprecated public final static sun.misc.Unsafe instance; static { try { diff --git a/src/interactive/scala/tools/nsc/interactive/Global.scala b/src/interactive/scala/tools/nsc/interactive/Global.scala index 174254d523..fdedaa600c 100644 --- a/src/interactive/scala/tools/nsc/interactive/Global.scala +++ b/src/interactive/scala/tools/nsc/interactive/Global.scala @@ -19,6 +19,8 @@ import scala.annotation.{ elidable, tailrec } import scala.language.implicitConversions import scala.tools.nsc.typechecker.Typers import scala.util.control.Breaks._ +import java.util.concurrent.ConcurrentHashMap +import scala.collection.JavaConverters.mapAsScalaMapConverter /** * This trait allows the IDE to have an instance of the PC that @@ -160,19 +162,18 @@ class Global(settings: Settings, _reporter: Reporter, projectName: String = "") /** A map of all loaded files to the rich compilation units that correspond to them. */ - val unitOfFile = new LinkedHashMap[AbstractFile, RichCompilationUnit] with - SynchronizedMap[AbstractFile, RichCompilationUnit] { + val unitOfFile = mapAsScalaMapConverter(new ConcurrentHashMap[AbstractFile, RichCompilationUnit] { override def put(key: AbstractFile, value: RichCompilationUnit) = { val r = super.put(key, value) - if (r.isEmpty) debugLog("added unit for "+key) + if (r == null) debugLog("added unit for "+key) r } - override def remove(key: AbstractFile) = { + override def remove(key: Any) = { val r = super.remove(key) - if (r.nonEmpty) debugLog("removed unit for "+key) + if (r != null) debugLog("removed unit for "+key) r } - } + }).asScala /** A set containing all those files that need to be removed * Units are removed by getUnit, typically once a unit is finished compiled. @@ -1091,7 +1092,7 @@ class Global(settings: Settings, _reporter: Reporter, projectName: String = "") val implicitlyAdded = viaView != NoSymbol members.add(sym, pre, implicitlyAdded) { (s, st) => new TypeMember(s, st, - context.isAccessible(if (s.hasGetter) s.getter(s.owner) else s, pre, superAccess && !implicitlyAdded), + context.isAccessible(if (s.hasGetter) s.getterIn(s.owner) else s, pre, superAccess && !implicitlyAdded), inherited, viaView) } diff --git a/src/library/scala/PartialFunction.scala b/src/library/scala/PartialFunction.scala index fba759eb32..98dd35d306 100644 --- a/src/library/scala/PartialFunction.scala +++ b/src/library/scala/PartialFunction.scala @@ -161,10 +161,10 @@ trait PartialFunction[-A, +B] extends (A => B) { self => object PartialFunction { /** Composite function produced by `PartialFunction#orElse` method */ - private class OrElse[-A, +B] (f1: PartialFunction[A, B], f2: PartialFunction[A, B]) extends PartialFunction[A, B] { + private class OrElse[-A, +B] (f1: PartialFunction[A, B], f2: PartialFunction[A, B]) extends scala.runtime.AbstractPartialFunction[A, B] { def isDefinedAt(x: A) = f1.isDefinedAt(x) || f2.isDefinedAt(x) - def apply(x: A): B = f1.applyOrElse(x, f2) + override def apply(x: A): B = f1.applyOrElse(x, f2) override def applyOrElse[A1 <: A, B1 >: B](x: A1, default: A1 => B1): B1 = { val z = f1.applyOrElse(x, checkFallback[B]) diff --git a/src/library/scala/Predef.scala b/src/library/scala/Predef.scala index 7f717aa6e4..59c89df3fa 100644 --- a/src/library/scala/Predef.scala +++ b/src/library/scala/Predef.scala @@ -126,7 +126,7 @@ object Predef extends LowPriorityImplicits with DeprecatedPredef { def optManifest[T](implicit m: OptManifest[T]) = m // Minor variations on identity functions - def identity[A](x: A): A = x // @see `conforms` for the implicit version + @inline def identity[A](x: A): A = x // @see `conforms` for the implicit version @inline def implicitly[T](implicit e: T) = e // for summoning implicit values from the nether world -- TODO: when dependent method types are on by default, give this result type `e.type`, so that inliner has better chance of knowing which method to inline in calls like `implicitly[MatchingStrategy[Option]].zero` @inline def locally[T](x: T): T = x // to communicate intent and avoid unmoored statements diff --git a/src/library/scala/beans/BeanInfo.scala b/src/library/scala/beans/BeanInfo.scala index 799e93e71a..d7f0a1618b 100644 --- a/src/library/scala/beans/BeanInfo.scala +++ b/src/library/scala/beans/BeanInfo.scala @@ -17,4 +17,5 @@ package scala.beans * * @author Ross Judson (rjudson@managedobjects.com) */ +@deprecated(message = "the generation of BeanInfo classes is no longer supported", since = "2.12.0") class BeanInfo extends scala.annotation.Annotation diff --git a/src/library/scala/collection/IterableViewLike.scala b/src/library/scala/collection/IterableViewLike.scala index 668190f700..e25cc78b6c 100644 --- a/src/library/scala/collection/IterableViewLike.scala +++ b/src/library/scala/collection/IterableViewLike.scala @@ -69,6 +69,10 @@ trait IterableViewLike[+A, trait Appended[B >: A] extends super.Appended[B] with Transformed[B] { def iterator = self.iterator ++ rest } + + trait Prepended[B >: A] extends super.Prepended[B] with Transformed[B] { + def iterator = fst.toIterator ++ self + } trait Filtered extends super.Filtered with Transformed[A] { def iterator = self.iterator filter pred @@ -110,6 +114,7 @@ trait IterableViewLike[+A, } with AbstractTransformed[(A1, B)] with ZippedAll[A1, B] protected override def newForced[B](xs: => GenSeq[B]): Transformed[B] = new { val forced = xs } with AbstractTransformed[B] with Forced[B] protected override def newAppended[B >: A](that: GenTraversable[B]): Transformed[B] = new { val rest = that } with AbstractTransformed[B] with Appended[B] + protected override def newPrepended[B >: A](that: GenTraversable[B]): Transformed[B] = new { val fst = that } with AbstractTransformed[B] with Prepended[B] protected override def newMapped[B](f: A => B): Transformed[B] = new { val mapping = f } with AbstractTransformed[B] with Mapped[B] protected override def newFlatMapped[B](f: A => GenTraversableOnce[B]): Transformed[B] = new { val mapping = f } with AbstractTransformed[B] with FlatMapped[B] protected override def newFiltered(p: A => Boolean): Transformed[A] = new { val pred = p } with AbstractTransformed[A] with Filtered diff --git a/src/library/scala/collection/Iterator.scala b/src/library/scala/collection/Iterator.scala index 660cc5a42a..4e3abf2286 100644 --- a/src/library/scala/collection/Iterator.scala +++ b/src/library/scala/collection/Iterator.scala @@ -182,7 +182,7 @@ object Iterator { } } def hasNext = (current ne null) && (current.hasNext || advance()) - def next() = if (hasNext) current.next else Iterator.empty.next + def next() = if (hasNext) current.next() else Iterator.empty.next() override def ++[B >: A](that: => GenTraversableOnce[B]): Iterator[B] = new ConcatIterator(current, queue :+ (() => that.toIterator)) @@ -191,11 +191,55 @@ object Iterator { private[scala] final class JoinIterator[+A](lhs: Iterator[A], that: => GenTraversableOnce[A]) extends Iterator[A] { private[this] lazy val rhs: Iterator[A] = that.toIterator def hasNext = lhs.hasNext || rhs.hasNext - def next = if (lhs.hasNext) lhs.next else rhs.next + def next() = if (lhs.hasNext) lhs.next() else rhs.next() override def ++[B >: A](that: => GenTraversableOnce[B]) = new ConcatIterator(this, Vector(() => that.toIterator)) } + + /** Creates a delegating iterator capped by a limit count. Negative limit means unbounded. + * Lazily skip to start on first evaluation. Avoids daisy-chained iterators due to slicing. + */ + private[scala] final class SliceIterator[A](val underlying: Iterator[A], start: Int, limit: Int) extends AbstractIterator[A] { + private var remaining = limit + private var dropping = start + @inline private def unbounded = remaining < 0 + private def skip(): Unit = + while (dropping > 0) { + if (underlying.hasNext) { + underlying.next() + dropping -= 1 + } else + dropping = 0 + } + def hasNext = { skip(); remaining != 0 && underlying.hasNext } + def next() = { + skip() + if (remaining > 0) { + remaining -= 1 + underlying.next() + } + else if (unbounded) underlying.next() + else empty.next() + } + override protected def sliceIterator(from: Int, until: Int): Iterator[A] = { + val lo = from max 0 + def adjustedBound = + if (unbounded) -1 + else 0 max (remaining - lo) + val rest = + if (until < 0) adjustedBound // respect current bound, if any + else if (until <= lo) 0 // empty + else if (unbounded) until - lo // now finite + else adjustedBound min (until - lo) // keep lesser bound + if (rest == 0) empty + else { + dropping += lo + remaining = rest + this + } + } + } } import Iterator.empty @@ -307,11 +351,11 @@ trait Iterator[+A] extends TraversableOnce[A] { /** Selects first ''n'' values of this iterator. * * @param n the number of values to take - * @return an iterator producing only of the first `n` values of this iterator, or else the + * @return an iterator producing only the first `n` values of this iterator, or else the * whole iterator, if it produces fewer than `n` values. * @note Reuse: $consumesAndProducesIterator */ - def take(n: Int): Iterator[A] = slice(0, n) + def take(n: Int): Iterator[A] = sliceIterator(0, n max 0) /** Advances this iterator past the first ''n'' elements, or the length of the iterator, whichever is smaller. * @@ -320,34 +364,29 @@ trait Iterator[+A] extends TraversableOnce[A] { * it omits the first `n` values. * @note Reuse: $consumesAndProducesIterator */ - def drop(n: Int): Iterator[A] = slice(n, Int.MaxValue) + def drop(n: Int): Iterator[A] = sliceIterator(n, -1) /** Creates an iterator returning an interval of the values produced by this iterator. * * @param from the index of the first element in this iterator which forms part of the slice. - * @param until the index of the first element following the slice. + * If negative, the slice starts at zero. + * @param until the index of the first element following the slice. If negative, the slice is empty. * @return an iterator which advances this iterator past the first `from` elements using `drop`, * and then takes `until - from` elements, using `take`. * @note Reuse: $consumesAndProducesIterator */ - def slice(from: Int, until: Int): Iterator[A] = { + def slice(from: Int, until: Int): Iterator[A] = sliceIterator(from, until max 0) + + /** Creates an optionally bounded slice, unbounded if `until` is negative. */ + protected def sliceIterator(from: Int, until: Int): Iterator[A] = { val lo = from max 0 - var toDrop = lo - while (toDrop > 0 && self.hasNext) { - self.next() - toDrop -= 1 - } + val rest = + if (until < 0) -1 // unbounded + else if (until <= lo) 0 // empty + else until - lo // finite - new AbstractIterator[A] { - private var remaining = until - lo - def hasNext = remaining > 0 && self.hasNext - def next(): A = - if (remaining > 0) { - remaining -= 1 - self.next() - } - else empty.next() - } + if (rest == 0) empty + else new Iterator.SliceIterator(this, lo, rest) } /** Creates a new iterator that maps all produced values of this iterator @@ -1148,9 +1187,8 @@ trait Iterator[+A] extends TraversableOnce[A] { * $willNotTerminateInf */ def copyToArray[B >: A](xs: Array[B], start: Int, len: Int): Unit = { - require(start >= 0 && (start < xs.length || xs.length == 0), s"start $start out of range ${xs.length}") var i = start - val end = start + math.min(len, xs.length - start) + val end = start + math.min(len, xs.length - start) while (i < end && hasNext) { xs(i) = next() i += 1 diff --git a/src/library/scala/collection/MapLike.scala b/src/library/scala/collection/MapLike.scala index 5ec7d5c615..38a598321f 100644 --- a/src/library/scala/collection/MapLike.scala +++ b/src/library/scala/collection/MapLike.scala @@ -230,11 +230,15 @@ self => protected class FilteredKeys(p: A => Boolean) extends AbstractMap[A, B] with DefaultMap[A, B] { override def foreach[C](f: ((A, B)) => C): Unit = for (kv <- self) if (p(kv._1)) f(kv) def iterator = self.iterator.filter(kv => p(kv._1)) - override def contains(key: A) = self.contains(key) && p(key) + override def contains(key: A) = p(key) && self.contains(key) def get(key: A) = if (!p(key)) None else self.get(key) } /** Filters this map by retaining only keys satisfying a predicate. + * + * '''Note''': the predicate must accept any key of type `A`, not just those already + * present in the map, as the predicate is tested before the underlying map is queried. + * * @param p the predicate used to test keys * @return an immutable map consisting only of those key value pairs of this map where the key satisfies * the predicate `p`. The resulting map wraps the original map without copying any elements. @@ -319,11 +323,20 @@ self => res } - /* Overridden for efficiency. */ - override def toSeq: Seq[(A, B)] = toBuffer[(A, B)] + override def toSeq: Seq[(A, B)] = { + if (isEmpty) Vector.empty[(A, B)] + else { + // Default appropriate for immutable collections; mutable collections override this + val vb = Vector.newBuilder[(A, B)] + foreach(vb += _) + vb.result + } + } + override def toBuffer[C >: (A, B)]: mutable.Buffer[C] = { val result = new mutable.ArrayBuffer[C](size) - copyToBuffer(result) + // Faster to let the map iterate itself than to defer through copyToBuffer + foreach(result += _) result } diff --git a/src/library/scala/collection/SeqViewLike.scala b/src/library/scala/collection/SeqViewLike.scala index e719f19c78..92d5547fd2 100644 --- a/src/library/scala/collection/SeqViewLike.scala +++ b/src/library/scala/collection/SeqViewLike.scala @@ -95,6 +95,14 @@ trait SeqViewLike[+A, if (idx < self.length) self(idx) else restSeq(idx - self.length) } + trait Prepended[B >: A] extends super.Prepended[B] with Transformed[B] { + protected[this] lazy val fstSeq = fst.toSeq + def length: Int = fstSeq.length + self.length + def apply(idx: Int): B = + if (idx < fstSeq.length) fstSeq(idx) + else self.apply(idx - fstSeq.length) + } + trait Filtered extends super.Filtered with Transformed[A] { protected[this] lazy val index = { var len = 0 @@ -178,21 +186,12 @@ trait SeqViewLike[+A, final override protected[this] def viewIdentifier = "P" } - trait Prepended[B >: A] extends Transformed[B] { - protected[this] val fst: B - override def iterator: Iterator[B] = Iterator.single(fst) ++ self.iterator - def length: Int = 1 + self.length - def apply(idx: Int): B = - if (idx == 0) fst - else self.apply(idx - 1) - final override protected[this] def viewIdentifier = "A" - } - /** Boilerplate method, to override in each subclass * This method could be eliminated if Scala had virtual classes */ protected override def newForced[B](xs: => GenSeq[B]): Transformed[B] = new { val forced = xs } with AbstractTransformed[B] with Forced[B] protected override def newAppended[B >: A](that: GenTraversable[B]): Transformed[B] = new { val rest = that } with AbstractTransformed[B] with Appended[B] + protected override def newPrepended[B >: A](that: GenTraversable[B]): Transformed[B] = new { protected[this] val fst = that } with AbstractTransformed[B] with Prepended[B] protected override def newMapped[B](f: A => B): Transformed[B] = new { val mapping = f } with AbstractTransformed[B] with Mapped[B] protected override def newFlatMapped[B](f: A => GenTraversableOnce[B]): Transformed[B] = new { val mapping = f } with AbstractTransformed[B] with FlatMapped[B] protected override def newFiltered(p: A => Boolean): Transformed[A] = new { val pred = p } with AbstractTransformed[A] with Filtered @@ -211,7 +210,6 @@ trait SeqViewLike[+A, val patch = _patch val replaced = _replaced } with AbstractTransformed[B] with Patched[B] - protected def newPrepended[B >: A](elem: B): Transformed[B] = new { protected[this] val fst = elem } with AbstractTransformed[B] with Prepended[B] // see comment in IterableViewLike. protected override def newTaken(n: Int): Transformed[A] = newSliced(SliceInterval(0, n)) @@ -241,7 +239,7 @@ trait SeqViewLike[+A, } override def +:[B >: A, That](elem: B)(implicit bf: CanBuildFrom[This, B, That]): That = - newPrepended(elem).asInstanceOf[That] + newPrepended(elem :: Nil).asInstanceOf[That] override def :+[B >: A, That](elem: B)(implicit bf: CanBuildFrom[This, B, That]): That = ++(Iterator.single(elem))(bf) diff --git a/src/library/scala/collection/SetLike.scala b/src/library/scala/collection/SetLike.scala index 3e549f72cd..80a344e6a8 100644 --- a/src/library/scala/collection/SetLike.scala +++ b/src/library/scala/collection/SetLike.scala @@ -77,11 +77,20 @@ self => protected[this] override def parCombiner = ParSet.newCombiner[A] - /* Overridden for efficiency. */ - override def toSeq: Seq[A] = toBuffer[A] + // Default collection type appropriate for immutable collections; mutable collections override this + override def toSeq: Seq[A] = { + if (isEmpty) Vector.empty[A] + else { + val vb = Vector.newBuilder[A] + foreach(vb += _) + vb.result + } + } + override def toBuffer[A1 >: A]: mutable.Buffer[A1] = { val result = new mutable.ArrayBuffer[A1](size) - copyToBuffer(result) + // Faster to let the map iterate itself than to defer through copyToBuffer + foreach(result += _) result } diff --git a/src/library/scala/collection/TraversableLike.scala b/src/library/scala/collection/TraversableLike.scala index d3a7db6968..a8731a51b1 100644 --- a/src/library/scala/collection/TraversableLike.scala +++ b/src/library/scala/collection/TraversableLike.scala @@ -253,7 +253,7 @@ trait TraversableLike[+A, +Repr] extends Any b.result } - private def filterImpl(p: A => Boolean, isFlipped: Boolean): Repr = { + private[scala] def filterImpl(p: A => Boolean, isFlipped: Boolean): Repr = { val b = newBuilder for (x <- this) if (p(x) != isFlipped) b += x diff --git a/src/library/scala/collection/TraversableViewLike.scala b/src/library/scala/collection/TraversableViewLike.scala index 5926c69ebf..0901d749c3 100644 --- a/src/library/scala/collection/TraversableViewLike.scala +++ b/src/library/scala/collection/TraversableViewLike.scala @@ -189,6 +189,15 @@ trait TraversableViewLike[+A, } final override protected[this] def viewIdentifier = "A" } + + trait Prepended[B >: A] extends Transformed[B] { + protected[this] val fst: GenTraversable[B] + def foreach[U](f: B => U) { + fst foreach f + self foreach f + } + final override protected[this] def viewIdentifier = "A" + } trait Filtered extends Transformed[A] { protected[this] val pred: A => Boolean @@ -222,11 +231,15 @@ trait TraversableViewLike[+A, final override protected[this] def viewIdentifier = "D" } - override def ++[B >: A, That](xs: GenTraversableOnce[B])(implicit bf: CanBuildFrom[This, B, That]): That = { + override def ++[B >: A, That](xs: GenTraversableOnce[B])(implicit bf: CanBuildFrom[This, B, That]): That = newAppended(xs.seq.toTraversable).asInstanceOf[That] -// was: if (bf.isInstanceOf[ByPassCanBuildFrom]) newAppended(that).asInstanceOf[That] -// else super.++[B, That](that)(bf) - } + + override def ++:[B >: A, That](xs: TraversableOnce[B])(implicit bf: CanBuildFrom[This, B, That]): That = + newPrepended(xs.seq.toTraversable).asInstanceOf[That] + + // Need second one because of optimization in TraversableLike + override def ++:[B >: A, That](xs: Traversable[B])(implicit bf: CanBuildFrom[This, B, That]): That = + newPrepended(xs).asInstanceOf[That] override def map[B, That](f: A => B)(implicit bf: CanBuildFrom[This, B, That]): That = { newMapped(f).asInstanceOf[That] @@ -253,6 +266,7 @@ trait TraversableViewLike[+A, */ protected def newForced[B](xs: => GenSeq[B]): Transformed[B] = new { val forced = xs } with AbstractTransformed[B] with Forced[B] protected def newAppended[B >: A](that: GenTraversable[B]): Transformed[B] = new { val rest = that } with AbstractTransformed[B] with Appended[B] + protected def newPrepended[B >: A](that: GenTraversable[B]): Transformed[B] = new { val fst = that } with AbstractTransformed[B] with Prepended[B] protected def newMapped[B](f: A => B): Transformed[B] = new { val mapping = f } with AbstractTransformed[B] with Mapped[B] protected def newFlatMapped[B](f: A => GenTraversableOnce[B]): Transformed[B] = new { val mapping = f } with AbstractTransformed[B] with FlatMapped[B] protected def newFiltered(p: A => Boolean): Transformed[A] = new { val pred = p } with AbstractTransformed[A] with Filtered diff --git a/src/library/scala/collection/immutable/HashSet.scala b/src/library/scala/collection/immutable/HashSet.scala index e4b7371ed4..837143784b 100644 --- a/src/library/scala/collection/immutable/HashSet.scala +++ b/src/library/scala/collection/immutable/HashSet.scala @@ -194,7 +194,7 @@ class HashSet[A] extends AbstractSet[A] protected def get0(key: A, hash: Int, level: Int): Boolean = false - def updated0(key: A, hash: Int, level: Int): HashSet[A] = + private[collection] def updated0(key: A, hash: Int, level: Int): HashSet[A] = new HashSet.HashSet1(key, hash) protected def removed0(key: A, hash: Int, level: Int): HashSet[A] = this @@ -256,10 +256,10 @@ object HashSet extends ImmutableSetFactory[HashSet] { class HashSet1[A](private[HashSet] val key: A, private[HashSet] val hash: Int) extends LeafHashSet[A] { override def size = 1 - override def get0(key: A, hash: Int, level: Int): Boolean = + override protected def get0(key: A, hash: Int, level: Int): Boolean = (hash == this.hash && key == this.key) - override def subsetOf0(that: HashSet[A], level: Int) = { + override protected def subsetOf0(that: HashSet[A], level: Int) = { // check if that contains this.key // we use get0 with our key and hash at the correct level instead of calling contains, // which would not work since that might not be a top-level HashSet @@ -267,7 +267,7 @@ object HashSet extends ImmutableSetFactory[HashSet] { that.get0(key, hash, level) } - override def updated0(key: A, hash: Int, level: Int): HashSet[A] = + override private[collection] def updated0(key: A, hash: Int, level: Int): HashSet[A] = if (hash == this.hash && key == this.key) this else { if (hash != this.hash) { @@ -312,7 +312,7 @@ object HashSet extends ImmutableSetFactory[HashSet] { override private[immutable] def diff0(that: HashSet[A], level: Int, buffer: Array[HashSet[A]], offset0: Int): HashSet[A] = if (that.get0(key, hash, level)) null else this - override def removed0(key: A, hash: Int, level: Int): HashSet[A] = + override protected def removed0(key: A, hash: Int, level: Int): HashSet[A] = if (hash == this.hash && key == this.key) null else this override protected def filter0(p: A => Boolean, negate: Boolean, level: Int, buffer: Array[HashSet[A]], offset0: Int): HashSet[A] = @@ -326,10 +326,10 @@ object HashSet extends ImmutableSetFactory[HashSet] { override def size = ks.size - override def get0(key: A, hash: Int, level: Int): Boolean = + override protected def get0(key: A, hash: Int, level: Int): Boolean = if (hash == this.hash) ks.contains(key) else false - override def subsetOf0(that: HashSet[A], level: Int) = { + override protected def subsetOf0(that: HashSet[A], level: Int) = { // we have to check each element // we use get0 with our hash at the correct level instead of calling contains, // which would not work since that might not be a top-level HashSet @@ -337,11 +337,11 @@ object HashSet extends ImmutableSetFactory[HashSet] { ks.forall(key => that.get0(key, hash, level)) } - override def updated0(key: A, hash: Int, level: Int): HashSet[A] = + override private[collection] def updated0(key: A, hash: Int, level: Int): HashSet[A] = if (hash == this.hash) new HashSetCollision1(hash, ks + key) else makeHashTrieSet(this.hash, this, hash, new HashSet1(key, hash), level) - override def union0(that: LeafHashSet[A], level: Int): HashSet[A] = that match { + override private[immutable] def union0(that: LeafHashSet[A], level: Int): HashSet[A] = that match { case that if that.hash != this.hash => // different hash code, so there is no need to investigate further. // Just create a branch node containing the two. @@ -374,7 +374,7 @@ object HashSet extends ImmutableSetFactory[HashSet] { } } - override def union0(that: HashSet[A], level: Int, buffer: Array[HashSet[A]], offset0: Int): HashSet[A] = that match { + override private[immutable] def union0(that: HashSet[A], level: Int, buffer: Array[HashSet[A]], offset0: Int): HashSet[A] = that match { case that: LeafHashSet[A] => // switch to the simpler Tree/Leaf implementation this.union0(that, level) @@ -431,7 +431,7 @@ object HashSet extends ImmutableSetFactory[HashSet] { } } - override def removed0(key: A, hash: Int, level: Int): HashSet[A] = + override protected def removed0(key: A, hash: Int, level: Int): HashSet[A] = if (hash == this.hash) { val ks1 = ks - key ks1.size match { @@ -528,7 +528,7 @@ object HashSet extends ImmutableSetFactory[HashSet] { override def size = size0 - override def get0(key: A, hash: Int, level: Int): Boolean = { + override protected def get0(key: A, hash: Int, level: Int): Boolean = { val index = (hash >>> level) & 0x1f val mask = (1 << index) if (bitmap == - 1) { @@ -540,7 +540,7 @@ object HashSet extends ImmutableSetFactory[HashSet] { false } - override def updated0(key: A, hash: Int, level: Int): HashSet[A] = { + override private[collection] def updated0(key: A, hash: Int, level: Int): HashSet[A] = { val index = (hash >>> level) & 0x1f val mask = (1 << index) val offset = Integer.bitCount(bitmap & (mask-1)) @@ -842,7 +842,7 @@ object HashSet extends ImmutableSetFactory[HashSet] { case _ => this } - override def removed0(key: A, hash: Int, level: Int): HashSet[A] = { + override protected def removed0(key: A, hash: Int, level: Int): HashSet[A] = { val index = (hash >>> level) & 0x1f val mask = (1 << index) val offset = Integer.bitCount(bitmap & (mask-1)) @@ -879,7 +879,7 @@ object HashSet extends ImmutableSetFactory[HashSet] { } } - override def subsetOf0(that: HashSet[A], level: Int): Boolean = if (that eq this) true else that match { + override protected def subsetOf0(that: HashSet[A], level: Int): Boolean = if (that eq this) true else that match { case that: HashTrieSet[A] if this.size0 <= that.size0 => // create local mutable copies of members var abm = this.bitmap diff --git a/src/library/scala/collection/immutable/List.scala b/src/library/scala/collection/immutable/List.scala index aa9dec2761..a8f1149615 100644 --- a/src/library/scala/collection/immutable/List.scala +++ b/src/library/scala/collection/immutable/List.scala @@ -13,7 +13,7 @@ package immutable import generic._ import mutable.{Builder, ListBuffer} import scala.annotation.tailrec -import java.io._ +import java.io.{ObjectOutputStream, ObjectInputStream} /** A class for immutable linked lists representing ordered collections * of elements of type. @@ -85,7 +85,7 @@ sealed abstract class List[+A] extends AbstractSeq[A] with Product with GenericTraversableTemplate[A, List] with LinearSeqOptimized[A, List[A]] - with Serializable { + with scala.Serializable { override def companion: GenericCompanion[List] = List import scala.collection.{Iterable, Traversable, Seq, IndexedSeq} diff --git a/src/library/scala/collection/immutable/ListMap.scala b/src/library/scala/collection/immutable/ListMap.scala index 7c40e84280..c5773338f5 100644 --- a/src/library/scala/collection/immutable/ListMap.scala +++ b/src/library/scala/collection/immutable/ListMap.scala @@ -29,7 +29,11 @@ object ListMap extends ImmutableMapFactory[ListMap] { new MapCanBuildFrom[A, B] def empty[A, B]: ListMap[A, B] = EmptyListMap.asInstanceOf[ListMap[A, B]] - private object EmptyListMap extends ListMap[Any, Nothing] { } + @SerialVersionUID(-8256686706655863282L) + private object EmptyListMap extends ListMap[Any, Nothing] { + override def apply(key: Any) = throw new NoSuchElementException("key not found: " + key) + override def contains(key: Any) = false + } } /** This class implements immutable maps using a list-based data structure. @@ -159,7 +163,6 @@ extends AbstractMap[A, B] */ override def apply(k: A): B1 = apply0(this, k) - @tailrec private def apply0(cur: ListMap[A, B1], k: A): B1 = if (cur.isEmpty) throw new NoSuchElementException("key not found: "+k) else if (k == cur.key) cur.value @@ -176,7 +179,16 @@ extends AbstractMap[A, B] @tailrec private def get0(cur: ListMap[A, B1], k: A): Option[B1] = if (k == cur.key) Some(cur.value) else if (cur.next.nonEmpty) get0(cur.next, k) else None - + + + override def contains(key: A): Boolean = contains0(this, key) + + @tailrec private def contains0(cur: ListMap[A, B1], k: A): Boolean = + if (k == cur.key) true + else if (cur.next.nonEmpty) contains0(cur.next, k) + else false + + /** This method allows one to create a new map with an additional mapping * from `key` to `value`. If the map contains already a mapping for `key`, * it will be overridden by this function. @@ -186,6 +198,7 @@ extends AbstractMap[A, B] new m.Node[B2](k, v) } + /** Creates a new mapping without the given `key`. * If the map does not contain a mapping for the given key, the * method returns the same map. diff --git a/src/library/scala/collection/immutable/Map.scala b/src/library/scala/collection/immutable/Map.scala index 5178d5a862..63ddcb18cf 100644 --- a/src/library/scala/collection/immutable/Map.scala +++ b/src/library/scala/collection/immutable/Map.scala @@ -94,6 +94,8 @@ object Map extends ImmutableMapFactory[Map] { private object EmptyMap extends AbstractMap[Any, Nothing] with Map[Any, Nothing] with Serializable { override def size: Int = 0 + override def apply(key: Any) = throw new NoSuchElementException("key not found: " + key) + override def contains(key: Any) = false def get(key: Any): Option[Nothing] = None def iterator: Iterator[(Any, Nothing)] = Iterator.empty override def updated [B1] (key: Any, value: B1): Map[Any, B1] = new Map1(key, value) @@ -103,6 +105,8 @@ object Map extends ImmutableMapFactory[Map] { class Map1[A, +B](key1: A, value1: B) extends AbstractMap[A, B] with Map[A, B] with Serializable { override def size = 1 + override def apply(key: A) = if (key == key1) value1 else throw new NoSuchElementException("key not found: " + key) + override def contains(key: A) = key == key1 def get(key: A): Option[B] = if (key == key1) Some(value1) else None def iterator = Iterator((key1, value1)) @@ -119,6 +123,11 @@ object Map extends ImmutableMapFactory[Map] { class Map2[A, +B](key1: A, value1: B, key2: A, value2: B) extends AbstractMap[A, B] with Map[A, B] with Serializable { override def size = 2 + override def apply(key: A) = + if (key == key1) value1 + else if (key == key2) value2 + else throw new NoSuchElementException("key not found: " + key) + override def contains(key: A) = (key == key1) || (key == key2) def get(key: A): Option[B] = if (key == key1) Some(value1) else if (key == key2) Some(value2) @@ -140,6 +149,12 @@ object Map extends ImmutableMapFactory[Map] { class Map3[A, +B](key1: A, value1: B, key2: A, value2: B, key3: A, value3: B) extends AbstractMap[A, B] with Map[A, B] with Serializable { override def size = 3 + override def apply(key: A) = + if (key == key1) value1 + else if (key == key2) value2 + else if (key == key3) value3 + else throw new NoSuchElementException("key not found: " + key) + override def contains(key: A) = (key == key1) || (key == key2) || (key == key3) def get(key: A): Option[B] = if (key == key1) Some(value1) else if (key == key2) Some(value2) @@ -164,6 +179,13 @@ object Map extends ImmutableMapFactory[Map] { class Map4[A, +B](key1: A, value1: B, key2: A, value2: B, key3: A, value3: B, key4: A, value4: B) extends AbstractMap[A, B] with Map[A, B] with Serializable { override def size = 4 + override def apply(key: A) = + if (key == key1) value1 + else if (key == key2) value2 + else if (key == key3) value3 + else if (key == key4) value4 + else throw new NoSuchElementException("key not found: " + key) + override def contains(key: A) = (key == key1) || (key == key2) || (key == key3) || (key == key4) def get(key: A): Option[B] = if (key == key1) Some(value1) else if (key == key2) Some(value2) diff --git a/src/library/scala/collection/immutable/PagedSeq.scala b/src/library/scala/collection/immutable/PagedSeq.scala index 3a64820be6..fb9f6703a9 100644 --- a/src/library/scala/collection/immutable/PagedSeq.scala +++ b/src/library/scala/collection/immutable/PagedSeq.scala @@ -12,7 +12,7 @@ package scala package collection package immutable -import java.io._ +import java.io.{File, FileReader, Reader} import scala.util.matching.Regex import scala.reflect.ClassTag diff --git a/src/library/scala/collection/immutable/Range.scala b/src/library/scala/collection/immutable/Range.scala index 3ae8a2c342..0b380517f8 100644 --- a/src/library/scala/collection/immutable/Range.scala +++ b/src/library/scala/collection/immutable/Range.scala @@ -202,7 +202,24 @@ extends scala.collection.AbstractSeq[Int] copy(locationAfterN(n), end, step) } ) - + + /** Creates a new range containing the elements starting at `from` up to but not including `until`. + * + * $doesNotUseBuilders + * + * @param from the element at which to start + * @param until the element at which to end (not included in the range) + * @return a new range consisting of a contiguous interval of values in the old range + */ + override def slice(from: Int, until: Int): Range = + if (from <= 0) take(until) + else if (until >= numRangeElements && numRangeElements >= 0) drop(from) + else { + val fromValue = locationAfterN(from) + if (from >= until) newEmptyRange(fromValue) + else new Range.Inclusive(fromValue, locationAfterN(until-1), step) + } + /** Creates a new range containing all the elements of this range except the last one. * * $doesNotUseBuilders diff --git a/src/library/scala/collection/immutable/Stream.scala b/src/library/scala/collection/immutable/Stream.scala index 714d5117d3..91a4e1c43d 100644 --- a/src/library/scala/collection/immutable/Stream.scala +++ b/src/library/scala/collection/immutable/Stream.scala @@ -499,6 +499,16 @@ self => ) else super.flatMap(f)(bf) + override private[scala] def filterImpl(p: A => Boolean, isFlipped: Boolean): Stream[A] = { + // optimization: drop leading prefix of elems for which f returns false + // var rest = this dropWhile (!p(_)) - forget DRY principle - GC can't collect otherwise + var rest = this + while (!rest.isEmpty && p(rest.head) == isFlipped) rest = rest.tail + // private utility func to avoid `this` on stack (would be needed for the lazy arg) + if (rest.nonEmpty) Stream.filteredTail(rest, p, isFlipped) + else Stream.Empty + } + /** Returns all the elements of this `Stream` that satisfy the predicate `p` * in a new `Stream` - i.e., it is still a lazy data structure. The order of * the elements is preserved @@ -512,15 +522,7 @@ self => * // produces * }}} */ - override def filter(p: A => Boolean): Stream[A] = { - // optimization: drop leading prefix of elems for which f returns false - // var rest = this dropWhile (!p(_)) - forget DRY principle - GC can't collect otherwise - var rest = this - while (!rest.isEmpty && !p(rest.head)) rest = rest.tail - // private utility func to avoid `this` on stack (would be needed for the lazy arg) - if (rest.nonEmpty) Stream.filteredTail(rest, p) - else Stream.Empty - } + override def filter(p: A => Boolean): Stream[A] = filterImpl(p, isFlipped = false) // This override is only left in 2.11 because of binary compatibility, see PR #3925 override final def withFilter(p: A => Boolean): StreamWithFilter = new StreamWithFilter(p) @@ -1284,8 +1286,8 @@ object Stream extends SeqFactory[Stream] { else cons(start, range(start + step, end, step)) } - private[immutable] def filteredTail[A](stream: Stream[A], p: A => Boolean) = { - cons(stream.head, stream.tail filter p) + private[immutable] def filteredTail[A](stream: Stream[A], p: A => Boolean, isFlipped: Boolean) = { + cons(stream.head, stream.tail.filterImpl(p, isFlipped)) } private[immutable] def collectedTail[A, B, That](head: B, stream: Stream[A], pf: PartialFunction[A, B], bf: CanBuildFrom[Stream[A], B, That]) = { diff --git a/src/library/scala/collection/immutable/StreamViewLike.scala b/src/library/scala/collection/immutable/StreamViewLike.scala index c2eb85815d..4d7eaeff2a 100644 --- a/src/library/scala/collection/immutable/StreamViewLike.scala +++ b/src/library/scala/collection/immutable/StreamViewLike.scala @@ -53,6 +53,7 @@ extends SeqView[A, Coll] /** boilerplate */ protected override def newForced[B](xs: => scala.collection.GenSeq[B]): Transformed[B] = new { val forced = xs } with AbstractTransformed[B] with Forced[B] protected override def newAppended[B >: A](that: scala.collection.GenTraversable[B]): Transformed[B] = new { val rest = that } with AbstractTransformed[B] with Appended[B] + protected override def newPrepended[B >: A](that: scala.collection.GenTraversable[B]): Transformed[B] = new { protected[this] val fst = that } with AbstractTransformed[B] with Prepended[B] protected override def newMapped[B](f: A => B): Transformed[B] = new { val mapping = f } with AbstractTransformed[B] with Mapped[B] protected override def newFlatMapped[B](f: A => scala.collection.GenTraversableOnce[B]): Transformed[B] = new { val mapping = f } with AbstractTransformed[B] with FlatMapped[B] protected override def newFiltered(p: A => Boolean): Transformed[A] = new { val pred = p } with AbstractTransformed[A] with Filtered @@ -67,7 +68,6 @@ extends SeqView[A, Coll] protected override def newPatched[B >: A](_from: Int, _patch: scala.collection.GenSeq[B], _replaced: Int): Transformed[B] = { new { val from = _from; val patch = _patch; val replaced = _replaced } with AbstractTransformed[B] with Patched[B] } - protected override def newPrepended[B >: A](elem: B): Transformed[B] = new { protected[this] val fst = elem } with AbstractTransformed[B] with Prepended[B] override def stringPrefix = "StreamView" } diff --git a/src/library/scala/collection/mutable/AnyRefMap.scala b/src/library/scala/collection/mutable/AnyRefMap.scala index 47fb66744e..2c7e76c5f5 100644 --- a/src/library/scala/collection/mutable/AnyRefMap.scala +++ b/src/library/scala/collection/mutable/AnyRefMap.scala @@ -335,6 +335,24 @@ extends AbstractMap[K, V] arm } + override def +[V1 >: V](kv: (K, V1)): AnyRefMap[K, V1] = { + val arm = clone().asInstanceOf[AnyRefMap[K, V1]] + arm += kv + arm + } + + override def ++[V1 >: V](xs: GenTraversableOnce[(K, V1)]): AnyRefMap[K, V1] = { + val arm = clone().asInstanceOf[AnyRefMap[K, V1]] + xs.foreach(kv => arm += kv) + arm + } + + override def updated[V1 >: V](key: K, value: V1): AnyRefMap[K, V1] = { + val arm = clone().asInstanceOf[AnyRefMap[K, V1]] + arm += (key, value) + arm + } + private[this] def foreachElement[A,B](elems: Array[AnyRef], f: A => B) { var i,j = 0 while (i < _hashes.length & j < _size) { diff --git a/src/library/scala/collection/mutable/ArrayOps.scala b/src/library/scala/collection/mutable/ArrayOps.scala index 00491ef20e..2bc41b5802 100644 --- a/src/library/scala/collection/mutable/ArrayOps.scala +++ b/src/library/scala/collection/mutable/ArrayOps.scala @@ -40,9 +40,8 @@ trait ArrayOps[T] extends Any with ArrayLike[T, Array[T]] with CustomParalleliza arrayElementClass(repr.getClass) override def copyToArray[U >: T](xs: Array[U], start: Int, len: Int) { - var l = math.min(len, repr.length) - if (xs.length - start < l) l = xs.length - start max 0 - Array.copy(repr, 0, xs, start, l) + val l = len min repr.length min (xs.length - start) + if (l > 0) Array.copy(repr, 0, xs, start, l) } override def toArray[U >: T : ClassTag]: Array[U] = { diff --git a/src/library/scala/collection/mutable/ArraySeq.scala b/src/library/scala/collection/mutable/ArraySeq.scala index 577a838315..5a50f4fb27 100644 --- a/src/library/scala/collection/mutable/ArraySeq.scala +++ b/src/library/scala/collection/mutable/ArraySeq.scala @@ -87,7 +87,7 @@ extends AbstractSeq[A] */ override def copyToArray[B >: A](xs: Array[B], start: Int, len: Int) { val len1 = len min (xs.length - start) min length - Array.copy(array, 0, xs, start, len1) + if (len1 > 0) Array.copy(array, 0, xs, start, len1) } override def clone(): ArraySeq[A] = { diff --git a/src/library/scala/collection/mutable/BufferLike.scala b/src/library/scala/collection/mutable/BufferLike.scala index 3c57387c03..8d24538620 100644 --- a/src/library/scala/collection/mutable/BufferLike.scala +++ b/src/library/scala/collection/mutable/BufferLike.scala @@ -211,13 +211,6 @@ trait BufferLike[A, +This <: BufferLike[A, This] with Buffer[A]] */ override def stringPrefix: String = "Buffer" - /** Returns the current evolving(!) state of this buffer as a read-only sequence. - * - * @return A sequence that forwards to this buffer for all its operations. - */ - @deprecated("The returned sequence changes as this buffer is mutated. For an immutable copy, use, e.g., toList.", "2.11.0") - def readOnly: scala.collection.Seq[A] = toSeq - /** Creates a new collection containing both the elements of this collection and the provided * traversable object. * diff --git a/src/library/scala/collection/mutable/BufferProxy.scala b/src/library/scala/collection/mutable/BufferProxy.scala index d9632cce91..2d52831d37 100644 --- a/src/library/scala/collection/mutable/BufferProxy.scala +++ b/src/library/scala/collection/mutable/BufferProxy.scala @@ -43,8 +43,6 @@ trait BufferProxy[A] extends Buffer[A] with Proxy { */ def +=(elem: A): this.type = { self.+=(elem); this } - override def readOnly = self.readOnly - /** Appends a number of elements provided by a traversable object. * * @param xs the traversable object. diff --git a/src/library/scala/collection/mutable/ListBuffer.scala b/src/library/scala/collection/mutable/ListBuffer.scala index 5e838d0d88..a611048da2 100644 --- a/src/library/scala/collection/mutable/ListBuffer.scala +++ b/src/library/scala/collection/mutable/ListBuffer.scala @@ -12,7 +12,7 @@ package mutable import generic._ import immutable.{List, Nil, ::} -import java.io._ +import java.io.{ObjectOutputStream, ObjectInputStream} import scala.annotation.migration /** A `Buffer` implementation back up by a list. It provides constant time @@ -408,9 +408,6 @@ final class ListBuffer[A] } } - @deprecated("The result of this method will change along with this buffer, which is often not what's expected.", "2.11.0") - override def readOnly: List[A] = start - // Private methods /** Copy contents of this buffer */ @@ -426,7 +423,7 @@ final class ListBuffer[A] } override def equals(that: Any): Boolean = that match { - case that: ListBuffer[_] => this.readOnly equals that.readOnly + case that: ListBuffer[_] => this.start equals that.start case _ => super.equals(that) } diff --git a/src/library/scala/collection/mutable/LongMap.scala b/src/library/scala/collection/mutable/LongMap.scala index ef488a3697..eea33e3044 100644 --- a/src/library/scala/collection/mutable/LongMap.scala +++ b/src/library/scala/collection/mutable/LongMap.scala @@ -415,6 +415,24 @@ extends AbstractMap[Long, V] lm } + override def +[V1 >: V](kv: (Long, V1)): LongMap[V1] = { + val lm = clone().asInstanceOf[LongMap[V1]] + lm += kv + lm + } + + override def ++[V1 >: V](xs: GenTraversableOnce[(Long, V1)]): LongMap[V1] = { + val lm = clone().asInstanceOf[LongMap[V1]] + xs.foreach(kv => lm += kv) + lm + } + + override def updated[V1 >: V](key: Long, value: V1): LongMap[V1] = { + val lm = clone().asInstanceOf[LongMap[V1]] + lm += (key, value) + lm + } + /** Applies a function to all keys of this map. */ def foreachKey[A](f: Long => A) { if ((extraKeys & 1) == 1) f(0L) @@ -541,7 +559,7 @@ object LongMap { /** Creates a new `LongMap` from keys and values. * Equivalent to but more efficient than `LongMap((keys zip values): _*)`. */ - def fromZip[V](keys: Iterable[Long], values: Iterable[V]): LongMap[V] = { + def fromZip[V](keys: collection.Iterable[Long], values: collection.Iterable[V]): LongMap[V] = { val sz = math.min(keys.size, values.size) val lm = new LongMap[V](sz * 2) val ki = keys.iterator diff --git a/src/library/scala/collection/mutable/MapLike.scala b/src/library/scala/collection/mutable/MapLike.scala index 6230fc23aa..8ba31d47b6 100644 --- a/src/library/scala/collection/mutable/MapLike.scala +++ b/src/library/scala/collection/mutable/MapLike.scala @@ -59,6 +59,18 @@ trait MapLike[A, B, +This <: MapLike[A, B, This] with Map[A, B]] override protected[this] def newBuilder: Builder[(A, B), This] = empty protected[this] override def parCombiner = ParMap.newCombiner[A, B] + + /** Converts this $coll to a sequence. + * + * ```Note```: assumes a fast `size` method. Subclasses should override if this is not true. + */ + override def toSeq: collection.Seq[(A, B)] = { + // ArrayBuffer for efficiency, preallocated to the right size. + val result = new ArrayBuffer[(A, B)](size) + foreach(result += _) + result + } + /** Adds a new key/value pair to this map and optionally returns previously bound value. * If the map already contains a diff --git a/src/library/scala/collection/mutable/ResizableArray.scala b/src/library/scala/collection/mutable/ResizableArray.scala index c3047522e2..85a299216e 100644 --- a/src/library/scala/collection/mutable/ResizableArray.scala +++ b/src/library/scala/collection/mutable/ResizableArray.scala @@ -74,7 +74,7 @@ trait ResizableArray[A] extends IndexedSeq[A] */ override def copyToArray[B >: A](xs: Array[B], start: Int, len: Int) { val len1 = len min (xs.length - start) min length - Array.copy(array, 0, xs, start, len1) + if (len1 > 0) Array.copy(array, 0, xs, start, len1) } //########################################################################## diff --git a/src/library/scala/collection/mutable/SetLike.scala b/src/library/scala/collection/mutable/SetLike.scala index a377b03124..cbe7a639dd 100644 --- a/src/library/scala/collection/mutable/SetLike.scala +++ b/src/library/scala/collection/mutable/SetLike.scala @@ -72,6 +72,17 @@ trait SetLike[A, +This <: SetLike[A, This] with Set[A]] protected[this] override def parCombiner = ParSet.newCombiner[A] + /** Converts this $coll to a sequence. + * + * ```Note```: assumes a fast `size` method. Subclasses should override if this is not true. + */ + override def toSeq: collection.Seq[A] = { + // ArrayBuffer for efficiency, preallocated to the right size. + val result = new ArrayBuffer[A](size) + foreach(result += _) + result + } + /** Adds an element to this $coll. * * @param elem the element to be added diff --git a/src/library/scala/collection/parallel/RemainsIterator.scala b/src/library/scala/collection/parallel/RemainsIterator.scala index 5f2ceac0e0..7bb278b038 100644 --- a/src/library/scala/collection/parallel/RemainsIterator.scala +++ b/src/library/scala/collection/parallel/RemainsIterator.scala @@ -456,6 +456,15 @@ self => } it } + /** Drop implemented as simple eager consumption. */ + override def drop(n: Int): IterableSplitter[T] = { + var i = 0 + while (i < n && hasNext) { + next() + i += 1 + } + this + } override def take(n: Int): IterableSplitter[T] = newTaken(n) override def slice(from1: Int, until1: Int): IterableSplitter[T] = newSliceInternal(newTaken(until1), from1) diff --git a/src/library/scala/collection/parallel/immutable/ParHashSet.scala b/src/library/scala/collection/parallel/immutable/ParHashSet.scala index 65a632470e..3a1ec7fff8 100644 --- a/src/library/scala/collection/parallel/immutable/ParHashSet.scala +++ b/src/library/scala/collection/parallel/immutable/ParHashSet.scala @@ -197,7 +197,7 @@ extends scala.collection.parallel.BucketCombiner[T, ParHashSet[T], Any, HashSetC while (i < chunksz) { val v = chunkarr(i).asInstanceOf[T] val hc = trie.computeHash(v) - trie = trie.updated0(v, hc, rootbits) + trie = trie.updated0(v, hc, rootbits) // internal API, private[collection] i += 1 } i = 0 diff --git a/src/library/scala/concurrent/BlockContext.scala b/src/library/scala/concurrent/BlockContext.scala index 747cc393c3..2b8ed4c7ca 100644 --- a/src/library/scala/concurrent/BlockContext.scala +++ b/src/library/scala/concurrent/BlockContext.scala @@ -41,7 +41,7 @@ package scala.concurrent trait BlockContext { /** Used internally by the framework; - * Designates (and eventually executes) a thunk which potentially blocks the calling `Thread`. + * Designates (and eventually executes) a thunk which potentially blocks the calling `java.lang.Thread`. * * Clients must use `scala.concurrent.blocking` or `scala.concurrent.Await` instead. */ @@ -53,9 +53,16 @@ object BlockContext { override def blockOn[T](thunk: =>T)(implicit permission: CanAwait): T = thunk } + /** + * @return the `BlockContext` that will be used if no other is found. + **/ + def defaultBlockContext: BlockContext = DefaultBlockContext + private val contextLocal = new ThreadLocal[BlockContext]() - /** Obtain the current thread's current `BlockContext`. */ + /** + @return the `BlockContext` that would be used for the current `java.lang.Thread` at this point + **/ def current: BlockContext = contextLocal.get match { case null => Thread.currentThread match { case ctx: BlockContext => ctx @@ -64,7 +71,9 @@ object BlockContext { case some => some } - /** Pushes a current `BlockContext` while executing `body`. */ + /** + * Installs a current `BlockContext` around executing `body`. + **/ def withBlockContext[T](blockContext: BlockContext)(body: => T): T = { val old = contextLocal.get // can be null try { diff --git a/src/library/scala/concurrent/ExecutionContext.scala b/src/library/scala/concurrent/ExecutionContext.scala index 11d3bb8b02..d728a7f97a 100644 --- a/src/library/scala/concurrent/ExecutionContext.scala +++ b/src/library/scala/concurrent/ExecutionContext.scala @@ -72,22 +72,24 @@ trait ExecutionContext { */ def reportFailure(@deprecatedName('t) cause: Throwable): Unit - /** Prepares for the execution of a task. Returns the prepared execution context. - * - * `prepare` should be called at the site where an `ExecutionContext` is received (for - * example, through an implicit method parameter). The returned execution context may - * then be used to execute tasks. The role of `prepare` is to save any context relevant - * to an execution's ''call site'', so that this context may be restored at the - * ''execution site''. (These are often different: for example, execution may be - * suspended through a `Promise`'s future until the `Promise` is completed, which may - * be done in another thread, on another stack.) - * - * Note: a valid implementation of `prepare` is one that simply returns `this`. - * - * @return the prepared execution context - */ + /** Prepares for the execution of a task. Returns the prepared + * execution context. The recommended implementation of + * `prepare` is to return `this`. + * + * This method should no longer be overridden or called. It was + * originally expected that `prepare` would be called by + * all libraries that consume ExecutionContexts, in order to + * capture thread local context. However, this usage has proven + * difficult to implement in practice and instead it is + * now better to avoid using `prepare` entirely. + * + * Instead, if an `ExecutionContext` needs to capture thread + * local context, it should capture that context when it is + * constructed, so that it doesn't need any additional + * preparation later. + */ + @deprecated("Preparation of ExecutionContexts will be removed.", "2.12") def prepare(): ExecutionContext = this - } /** @@ -115,7 +117,7 @@ object ExecutionContext { * * @return the global `ExecutionContext` */ - def global: ExecutionContextExecutor = Implicits.global + def global: ExecutionContextExecutor = Implicits.global.asInstanceOf[ExecutionContextExecutor] object Implicits { /** @@ -125,7 +127,7 @@ object ExecutionContext { * The default `ExecutionContext` implementation is backed by a port of * [[http://gee.cs.oswego.edu/dl/jsr166/dist/jsr166-4jdk7docs/java/util/concurrent/ForkJoinPool.html java.util.concurrent.ForkJoinPool]]. */ - implicit lazy val global: ExecutionContextExecutor = impl.ExecutionContextImpl.fromExecutor(null: Executor) + implicit lazy val global: ExecutionContext = impl.ExecutionContextImpl.fromExecutor(null: Executor) } /** Creates an `ExecutionContext` from the given `ExecutorService`. diff --git a/src/library/scala/concurrent/Future.scala b/src/library/scala/concurrent/Future.scala index e93a3284dc..2c7f0879ab 100644 --- a/src/library/scala/concurrent/Future.scala +++ b/src/library/scala/concurrent/Future.scala @@ -10,26 +10,22 @@ package scala.concurrent import scala.language.higherKinds -import java.util.concurrent.{ ConcurrentLinkedQueue, TimeUnit, Callable } +import java.util.concurrent.{ CountDownLatch, TimeUnit, Callable } import java.util.concurrent.TimeUnit.{ NANOSECONDS => NANOS, MILLISECONDS ⇒ MILLIS } -import java.lang.{ Iterable => JIterable } -import java.util.{ LinkedList => JLinkedList } -import java.util.concurrent.atomic.{ AtomicReferenceFieldUpdater, AtomicInteger, AtomicLong, AtomicBoolean } +import java.util.concurrent.atomic.AtomicInteger import scala.util.control.NonFatal -import scala.Option import scala.util.{Try, Success, Failure} - +import scala.concurrent.duration._ import scala.annotation.tailrec import scala.collection.mutable.Builder import scala.collection.generic.CanBuildFrom import scala.reflect.ClassTag - /** The trait that represents futures. * - * Asynchronous computations that yield futures are created with the `Future` call: + * Asynchronous computations that yield futures are created with the `Future.apply` call: * * {{{ * val s = "Hello" @@ -60,6 +56,10 @@ import scala.reflect.ClassTag * If a future is failed with a `scala.runtime.NonLocalReturnControl`, * it is completed with a value from that throwable instead. * + * @define swallowsExceptions + * Since this method executes asynchronously and does not produce a return value, + * any non-fatal exceptions thrown will be reported to the `ExecutionContext`. + * * @define nonDeterministic * Note: using this method yields nondeterministic dataflow programs. * @@ -91,14 +91,7 @@ import scala.reflect.ClassTag * `execute()` either immediately or asynchronously. */ trait Future[+T] extends Awaitable[T] { - - // The executor within the lexical scope - // of the Future trait. Note that this will - // (modulo bugs) _never_ execute a callback - // other than those below in this same file. - // - // See the documentation on `InternalCallbackExecutor` for more details. - private def internalExecutor = Future.InternalCallbackExecutor + import Future.{ InternalCallbackExecutor => internalExecutor } /* Callbacks */ @@ -109,9 +102,11 @@ trait Future[+T] extends Awaitable[T] { * If the future has already been completed with a value, * this will either be applied immediately or be scheduled asynchronously. * + * $swallowsExceptions * $multipleCallbacks * $callbackInContext */ + @deprecated("use `foreach` or `onComplete` instead (keep in mind that they take total rather than partial functions)", "2.12") def onSuccess[U](pf: PartialFunction[T, U])(implicit executor: ExecutionContext): Unit = onComplete { case Success(v) => pf.applyOrElse[T, Any](v, Predef.conforms[T]) // Exploiting the cached function to avoid MatchError @@ -128,9 +123,11 @@ trait Future[+T] extends Awaitable[T] { * * Will not be called in case that the future is completed with a value. * + * $swallowsExceptions * $multipleCallbacks * $callbackInContext */ + @deprecated("use `onComplete` or `failed.foreach` instead (keep in mind that they take total rather than partial functions)", "2.12") def onFailure[U](@deprecatedName('callback) pf: PartialFunction[Throwable, U])(implicit executor: ExecutionContext): Unit = onComplete { case Failure(t) => pf.applyOrElse[Throwable, Any](t, Predef.conforms[Throwable]) // Exploiting the cached function to avoid MatchError @@ -143,8 +140,12 @@ trait Future[+T] extends Awaitable[T] { * If the future has already been completed, * this will either be applied immediately or be scheduled asynchronously. * + * $swallowsExceptions * $multipleCallbacks * $callbackInContext + * + * @tparam U only used to accept any return type of the given callback function + * @param f the function to be executed when this `Future` completes */ def onComplete[U](@deprecatedName('func) f: Try[T] => U)(implicit executor: ExecutionContext): Unit @@ -160,46 +161,47 @@ trait Future[+T] extends Awaitable[T] { */ def isCompleted: Boolean - /** The value of this `Future`. + /** The current value of this `Future`. + * + * $nonDeterministic * * If the future is not completed the returned value will be `None`. * If the future is completed the value will be `Some(Success(t))` * if it contains a valid result, or `Some(Failure(error))` if it contains * an exception. + * + * @return `None` if the `Future` wasn't completed, `Some` if it was. */ def value: Option[Try[T]] /* Projections */ - /** Returns a failed projection of this future. - * - * The failed projection is a future holding a value of type `Throwable`. + /** The returned `Future` will be successfully completed with the `Throwable` of the original `Future` + * if the original `Future` fails. * - * It is completed with a value which is the throwable of the original future - * in case the original future is failed. + * If the original `Future` is successful, the returned `Future` is failed with a `NoSuchElementException`. * - * It is failed with a `NoSuchElementException` if the original future is completed successfully. - * - * Blocking on this future returns a value if the original future is completed with an exception - * and throws a corresponding exception if the original future fails. + * @return a failed projection of this `Future`. */ - def failed: Future[Throwable] = { - implicit val ec = internalExecutor - val p = Promise[Throwable]() - onComplete { - case Failure(t) => p success t - case Success(v) => p failure (new NoSuchElementException("Future.failed not completed with a throwable.")) - } - p.future - } + def failed: Future[Throwable] = + transform({ + case Failure(t) => Success(t) + case Success(v) => Failure(new NoSuchElementException("Future.failed not completed with a throwable.")) + })(internalExecutor) /* Monadic operations */ /** Asynchronously processes the value in the future once the value becomes available. * - * Will not be called if the future fails. + * WARNING: Will not be called if this future is never completed or if it is completed with a failure. + * + * $swallowsExceptions + * + * @tparam U only used to accept any return type of the given callback function + * @param f the function which will be executed if this `Future` completes with a result, + * the return value of `f` will be discarded. */ def foreach[U](f: T => U)(implicit executor: ExecutionContext): Unit = onComplete { _ foreach f } @@ -208,33 +210,49 @@ trait Future[+T] extends Awaitable[T] { * exception thrown when 's' or 'f' is applied, that exception will be propagated * to the resulting future. * - * @param s function that transforms a successful result of the receiver into a - * successful result of the returned future - * @param f function that transforms a failure of the receiver into a failure of - * the returned future - * @return a future that will be completed with the transformed value - */ - def transform[S](s: T => S, f: Throwable => Throwable)(implicit executor: ExecutionContext): Future[S] = { - val p = Promise[S]() - // transform on Try has the wrong shape for us here - onComplete { - case Success(r) => p complete Try(s(r)) - case Failure(t) => p complete Try(throw f(t)) // will throw fatal errors! + * @tparam S the type of the returned `Future` + * @param s function that transforms a successful result of the receiver into a successful result of the returned future + * @param f function that transforms a failure of the receiver into a failure of the returned future + * @return a `Future` that will be completed with the transformed value + */ + def transform[S](s: T => S, f: Throwable => Throwable)(implicit executor: ExecutionContext): Future[S] = + transform { + case Success(r) => Try(s(r)) + case Failure(t) => Try(throw f(t)) // will throw fatal errors! } - p.future - } + + /** Creates a new Future by applying the specified function to the result + * of this Future. If there is any non-fatal exception thrown when 'f' + * is applied then that exception will be propagated to the resulting future. + * + * @tparam S the type of the returned `Future` + * @param f function that transforms the result of this future + * @return a `Future` that will be completed with the transformed value + */ + def transform[S](f: Try[T] => Try[S])(implicit executor: ExecutionContext): Future[S] + + /** Creates a new Future by applying the specified function, which produces a Future, to the result + * of this Future. If there is any non-fatal exception thrown when 'f' + * is applied then that exception will be propagated to the resulting future. + * + * @tparam S the type of the returned `Future` + * @param f function that transforms the result of this future + * @return a `Future` that will be completed with the transformed value + */ + def transformWith[S](f: Try[T] => Future[S])(implicit executor: ExecutionContext): Future[S] + /** Creates a new future by applying a function to the successful result of * this future. If this future is completed with an exception then the new * future will also contain this exception. * * $forComprehensionExamples + * + * @tparam S the type of the returned `Future` + * @param f the function which will be applied to the successful result of this `Future` + * @return a `Future` which will be completed with the result of the application of the function */ - def map[S](f: T => S)(implicit executor: ExecutionContext): Future[S] = { // transform(f, identity) - val p = Promise[S]() - onComplete { v => p complete (v map f) } - p.future - } + def map[S](f: T => S)(implicit executor: ExecutionContext): Future[S] = transform(_.map(f)) /** Creates a new future by applying a function to the successful result of * this future, and returns the result of the function as the new future. @@ -242,21 +260,23 @@ trait Future[+T] extends Awaitable[T] { * also contain this exception. * * $forComprehensionExamples + * + * @tparam S the type of the returned `Future` + * @param f the function which will be applied to the successful result of this `Future` + * @return a `Future` which will be completed with the result of the application of the function */ - def flatMap[S](f: T => Future[S])(implicit executor: ExecutionContext): Future[S] = { - import impl.Promise.DefaultPromise - val p = new DefaultPromise[S]() - onComplete { - case f: Failure[_] => p complete f.asInstanceOf[Failure[S]] - case Success(v) => try f(v) match { - // If possible, link DefaultPromises to avoid space leaks - case dp: DefaultPromise[_] => dp.asInstanceOf[DefaultPromise[S]].linkRootOf(p) - case fut => fut.onComplete(p.complete)(internalExecutor) - } catch { case NonFatal(t) => p failure t } - } - p.future + def flatMap[S](f: T => Future[S])(implicit executor: ExecutionContext): Future[S] = transformWith { + case Success(s) => f(s) + case Failure(_) => this.asInstanceOf[Future[S]] } + /** Creates a new future with one level of nesting flattened, this method is equivalent + * to `flatMap(identity)`. + * + * @tparam S the type of the returned `Future` + */ + def flatten[S](implicit ev: T <:< Future[S]): Future[S] = flatMap(ev)(internalExecutor) + /** Creates a new future by filtering the value of the current future with a predicate. * * If the current future contains a value which satisfies the predicate, the new future will also hold that value. @@ -269,14 +289,15 @@ trait Future[+T] extends Awaitable[T] { * val f = Future { 5 } * val g = f filter { _ % 2 == 1 } * val h = f filter { _ % 2 == 0 } - * Await.result(g, Duration.Zero) // evaluates to 5 + * g foreach println // Eventually prints 5 * Await.result(h, Duration.Zero) // throw a NoSuchElementException * }}} + * + * @param p the predicate to apply to the successful result of this `Future` + * @return a `Future` which will hold the successful result of this `Future` if it matches the predicate or a `NoSuchElementException` */ def filter(@deprecatedName('pred) p: T => Boolean)(implicit executor: ExecutionContext): Future[T] = - map { - r => if (p(r)) r else throw new NoSuchElementException("Future.filter predicate is not satisfied") - } + map { r => if (p(r)) r else throw new NoSuchElementException("Future.filter predicate is not satisfied") } /** Used by for-comprehensions. */ @@ -298,9 +319,13 @@ trait Future[+T] extends Awaitable[T] { * val h = f collect { * case x if x > 0 => x * 2 * } - * Await.result(g, Duration.Zero) // evaluates to 5 + * g foreach println // Eventually prints 5 * Await.result(h, Duration.Zero) // throw a NoSuchElementException * }}} + * + * @tparam S the type of the returned `Future` + *  @param pf the `PartialFunction` to apply to the successful result of this `Future` + * @return a `Future` holding the result of application of the `PartialFunction` or a `NoSuchElementException` */ def collect[S](pf: PartialFunction[T, S])(implicit executor: ExecutionContext): Future[S] = map { @@ -318,12 +343,13 @@ trait Future[+T] extends Awaitable[T] { * Future (6 / 0) recover { case e: NotFoundException => 0 } // result: exception * Future (6 / 2) recover { case e: ArithmeticException => 0 } // result: 3 * }}} + * + * @tparam U the type of the returned `Future` + * @param pf the `PartialFunction` to apply if this `Future` fails + * @return a `Future` with the successful value of this `Future` or the result of the `PartialFunction` */ - def recover[U >: T](pf: PartialFunction[Throwable, U])(implicit executor: ExecutionContext): Future[U] = { - val p = Promise[U]() - onComplete { v => p complete (v recover pf) } - p.future - } + def recover[U >: T](pf: PartialFunction[Throwable, U])(implicit executor: ExecutionContext): Future[U] = + transform { _ recover pf } /** Creates a new future that will handle any matching throwable that this * future might contain by assigning it a value of another future. @@ -337,15 +363,16 @@ trait Future[+T] extends Awaitable[T] { * val f = Future { Int.MaxValue } * Future (6 / 0) recoverWith { case e: ArithmeticException => f } // result: Int.MaxValue * }}} + * + * @tparam U the type of the returned `Future` + * @param pf the `PartialFunction` to apply if this `Future` fails + * @return a `Future` with the successful value of this `Future` or the outcome of the `Future` returned by the `PartialFunction` */ - def recoverWith[U >: T](pf: PartialFunction[Throwable, Future[U]])(implicit executor: ExecutionContext): Future[U] = { - val p = Promise[U]() - onComplete { - case Failure(t) => try pf.applyOrElse(t, (_: Throwable) => this).onComplete(p.complete)(internalExecutor) catch { case NonFatal(t) => p failure t } - case other => p complete other + def recoverWith[U >: T](pf: PartialFunction[Throwable, Future[U]])(implicit executor: ExecutionContext): Future[U] = + transformWith { + case Failure(t) => pf.applyOrElse(t, (_: Throwable) => this) + case Success(_) => this } - p.future - } /** Zips the values of `this` and `that` future, and creates * a new future holding the tuple of their results. @@ -354,17 +381,35 @@ trait Future[+T] extends Awaitable[T] { * with the throwable stored in `this`. * Otherwise, if `that` future fails, the resulting future is failed * with the throwable stored in `that`. + * + * @tparam U the type of the other `Future` + * @param that the other `Future` + * @return a `Future` with the results of both futures or the failure of the first of them that failed */ def zip[U](that: Future[U]): Future[(T, U)] = { implicit val ec = internalExecutor - val p = Promise[(T, U)]() - onComplete { - case f: Failure[_] => p complete f.asInstanceOf[Failure[(T, U)]] - case Success(s) => that onComplete { c => p.complete(c map { s2 => (s, s2) }) } - } - p.future + flatMap { r1 => that.map(r2 => (r1, r2)) } } + /** Zips the values of `this` and `that` future using a function `f`, + * and creates a new future holding the result. + * + * If `this` future fails, the resulting future is failed + * with the throwable stored in `this`. + * Otherwise, if `that` future fails, the resulting future is failed + * with the throwable stored in `that`. + * If the application of `f` throws a throwable, the resulting future + * is failed with that throwable if it is non-fatal. + * + * @tparam U the type of the other `Future` + * @tparam R the type of the resulting `Future` + * @param that the other `Future` + * @param f the function to apply to the results of `this` and `that` + * @return a `Future` with the result of the application of `f` to the results of `this` and `that` + */ + def zipWith[U, R](that: Future[U])(f: (T, U) => R)(implicit executor: ExecutionContext): Future[R] = + flatMap(r1 => that.map(r2 => f(r1, r2)))(internalExecutor) + /** Creates a new future which holds the result of this future if it was completed successfully, or, if not, * the result of the `that` future if `that` is completed successfully. * If both futures are failed, the resulting future holds the throwable object of the first future. @@ -376,24 +421,26 @@ trait Future[+T] extends Awaitable[T] { * val f = Future { sys.error("failed") } * val g = Future { 5 } * val h = f fallbackTo g - * Await.result(h, Duration.Zero) // evaluates to 5 + * h foreach println // Eventually prints 5 * }}} + * + * @tparam U the type of the other `Future` and the resulting `Future` + * @param that the `Future` whose result we want to use if this `Future` fails. + * @return a `Future` with the successful result of this or that `Future` or the failure of this `Future` if both fail */ - def fallbackTo[U >: T](that: Future[U]): Future[U] = { - implicit val ec = internalExecutor - val p = Promise[U]() - onComplete { - case s @ Success(_) => p complete s - case f @ Failure(_) => that onComplete { - case s2 @ Success(_) => p complete s2 - case _ => p complete f // Use the first failure as the failure - } + def fallbackTo[U >: T](that: Future[U]): Future[U] = + if (this eq that) this + else { + implicit val ec = internalExecutor + recoverWith { case _ => that } recoverWith { case _ => this } } - p.future - } /** Creates a new `Future[S]` which is completed with this `Future`'s result if * that conforms to `S`'s erased type or a `ClassCastException` otherwise. + * + * @tparam S the type of the returned `Future` + * @param tag the `ClassTag` which will be used to cast the result of this `Future` + * @return a `Future` holding the casted result of this `Future` or a `ClassCastException` otherwise */ def mapTo[S](implicit tag: ClassTag[S]): Future[S] = { implicit val ec = internalExecutor @@ -427,15 +474,19 @@ trait Future[+T] extends Awaitable[T] { * case Success(v) => println(v) * } * }}} + * + * @tparam U only used to accept any return type of the given `PartialFunction` + * @param pf a `PartialFunction` which will be conditionally applied to the outcome of this `Future` + * @return a `Future` which will be completed with the exact same outcome as this `Future` but after the `PartialFunction` has been executed. */ - def andThen[U](pf: PartialFunction[Try[T], U])(implicit executor: ExecutionContext): Future[T] = { - val p = Promise[T]() - onComplete { - case r => try pf.applyOrElse[Try[T], Any](r, Predef.conforms[Try[T]]) finally p complete r - } - p.future - } + def andThen[U](pf: PartialFunction[Try[T], U])(implicit executor: ExecutionContext): Future[T] = + transform { + result => + try pf.applyOrElse[Try[T], Any](result, Predef.conforms[Try[T]]) + catch { case NonFatal(t) => executor reportFailure t } + result + } } @@ -459,40 +510,102 @@ object Future { classOf[Unit] -> classOf[scala.runtime.BoxedUnit] ) + /** A Future which is never completed. + */ + final object never extends Future[Nothing] { + + @throws(classOf[TimeoutException]) + @throws(classOf[InterruptedException]) + override def ready(atMost: Duration)(implicit permit: CanAwait): this.type = { + atMost match { + case e if e eq Duration.Undefined => throw new IllegalArgumentException("cannot wait for Undefined period") + case Duration.Inf => new CountDownLatch(1).await() + case Duration.MinusInf => // Drop out + case f: FiniteDuration => + if (f > Duration.Zero) new CountDownLatch(1).await(f.toNanos, TimeUnit.NANOSECONDS) + } + throw new TimeoutException(s"Future timed out after [$atMost]") + } + + @throws(classOf[Exception]) + override def result(atMost: Duration)(implicit permit: CanAwait): Nothing = { + ready(atMost) + throw new TimeoutException(s"Future timed out after [$atMost]") + } + + override def onSuccess[U](pf: PartialFunction[Nothing, U])(implicit executor: ExecutionContext): Unit = () + override def onFailure[U](pf: PartialFunction[Throwable, U])(implicit executor: ExecutionContext): Unit = () + override def onComplete[U](f: Try[Nothing] => U)(implicit executor: ExecutionContext): Unit = () + override def isCompleted: Boolean = false + override def value: Option[Try[Nothing]] = None + override def failed: Future[Throwable] = this + override def foreach[U](f: Nothing => U)(implicit executor: ExecutionContext): Unit = () + override def transform[S](s: Nothing => S, f: Throwable => Throwable)(implicit executor: ExecutionContext): Future[S] = this + override def transform[S](f: Try[Nothing] => Try[S])(implicit executor: ExecutionContext): Future[S] = this + override def transformWith[S](f: Try[Nothing] => Future[S])(implicit executor: ExecutionContext): Future[S] = this + override def map[S](f: Nothing => S)(implicit executor: ExecutionContext): Future[S] = this + override def flatMap[S](f: Nothing => Future[S])(implicit executor: ExecutionContext): Future[S] = this + override def flatten[S](implicit ev: Nothing <:< Future[S]): Future[S] = this + override def filter(p: Nothing => Boolean)(implicit executor: ExecutionContext): Future[Nothing] = this + override def collect[S](pf: PartialFunction[Nothing, S])(implicit executor: ExecutionContext): Future[S] = this + override def recover[U >: Nothing](pf: PartialFunction[Throwable, U])(implicit executor: ExecutionContext): Future[U] = this + override def recoverWith[U >: Nothing](pf: PartialFunction[Throwable, Future[U]])(implicit executor: ExecutionContext): Future[U] = this + override def zip[U](that: Future[U]): Future[(Nothing, U)] = this + override def zipWith[U, R](that: Future[U])(f: (Nothing, U) => R)(implicit executor: ExecutionContext): Future[R] = this + override def fallbackTo[U >: Nothing](that: Future[U]): Future[U] = this + override def mapTo[S](implicit tag: ClassTag[S]): Future[S] = this + override def andThen[U](pf: PartialFunction[Try[Nothing], U])(implicit executor: ExecutionContext): Future[Nothing] = this + + override def toString: String = "Future(<never>)" + } + + /** A Future which is always completed with the Unit value. + */ + val unit: Future[Unit] = successful(()) + /** Creates an already completed Future with the specified exception. * - * @tparam T the type of the value in the future - * @return the newly created `Future` object + * @tparam T the type of the value in the future + * @param exception the non-null instance of `Throwable` + * @return the newly created `Future` instance */ def failed[T](exception: Throwable): Future[T] = Promise.failed(exception).future /** Creates an already completed Future with the specified result. * * @tparam T the type of the value in the future - * @return the newly created `Future` object + * @param result the given successful value + * @return the newly created `Future` instance */ def successful[T](result: T): Future[T] = Promise.successful(result).future /** Creates an already completed Future with the specified result or exception. * - * @tparam T the type of the value in the promise - * @return the newly created `Future` object + * @tparam T the type of the value in the `Future` + * @param result the result of the returned `Future` instance + * @return the newly created `Future` instance */ def fromTry[T](result: Try[T]): Future[T] = Promise.fromTry(result).future - /** Starts an asynchronous computation and returns a `Future` object with the result of that computation. + /** Starts an asynchronous computation and returns a `Future` instance with the result of that computation. * * The result becomes available once the asynchronous computation is completed. * - * @tparam T the type of the result - * @param body the asychronous computation + * @tparam T the type of the result + * @param body the asychronous computation * @param executor the execution context on which the future is run - * @return the `Future` holding the result of the computation + * @return the `Future` holding the result of the computation */ - def apply[T](body: =>T)(implicit @deprecatedName('execctx) executor: ExecutionContext): Future[T] = impl.Future(body) + def apply[T](body: =>T)(implicit @deprecatedName('execctx) executor: ExecutionContext): Future[T] = + unit.map(_ => body) - /** Simple version of `Future.traverse`. Transforms a `TraversableOnce[Future[A]]` into a `Future[TraversableOnce[A]]`. - * Useful for reducing many `Future`s into a single `Future`. + /** Simple version of `Future.traverse`. Asynchronously and non-blockingly transforms a `TraversableOnce[Future[A]]` + * into a `Future[TraversableOnce[A]]`. Useful for reducing many `Future`s into a single `Future`. + * + * @tparam A the type of the value inside the Futures + * @tparam M the type of the `TraversableOnce` of Futures + * @param in the `TraversableOnce` of Futures which will be sequenced + * @return the `Future` of the `TraversableOnce` of results */ def sequence[A, M[X] <: TraversableOnce[X]](in: M[Future[A]])(implicit cbf: CanBuildFrom[M[Future[A]], A, M[A]], executor: ExecutionContext): Future[M[A]] = { in.foldLeft(successful(cbf(in))) { @@ -500,7 +613,12 @@ object Future { } map (_.result()) } - /** Returns a new `Future` to the result of the first future in the list that is completed. + /** Asynchronously and non-blockingly returns a new `Future` to the result of the first future + * in the list that is completed. This means no matter if it is completed as a success or as a failure. + * + * @tparam T the type of the value in the future + * @param futures the `TraversableOnce` of Futures in which to find the first completed + * @return the `Future` holding the result of the future that is first to be completed */ def firstCompletedOf[T](futures: TraversableOnce[Future[T]])(implicit executor: ExecutionContext): Future[T] = { val p = Promise[T]() @@ -509,8 +627,15 @@ object Future { p.future } - /** Returns a `Future` that will hold the optional result of the first `Future` with a result that matches the predicate. + /** Asynchronously and non-blockingly returns a `Future` that will hold the optional result + * of the first `Future` with a result that matches the predicate. + * + * @tparam T the type of the value in the future + * @param futures the `TraversableOnce` of Futures to search + * @param p the predicate which indicates if it's a match + * @return the `Future` holding the optional result of the search */ + @deprecated("Use the overloaded version of this method that takes a scala.collection.immutable.Iterable instead", "2.12") def find[T](@deprecatedName('futurestravonce) futures: TraversableOnce[Future[T]])(@deprecatedName('predicate) p: T => Boolean)(implicit executor: ExecutionContext): Future[Option[T]] = { val futuresBuffer = futures.toBuffer if (futuresBuffer.isEmpty) successful[Option[T]](None) @@ -534,40 +659,127 @@ object Future { } } - /** A non-blocking fold over the specified futures, with the start value of the given zero. + + /** Asynchronously and non-blockingly returns a `Future` that will hold the optional result + * of the first `Future` with a result that matches the predicate, failed `Future`s will be ignored. + * + * @tparam T the type of the value in the future + * @param futures the `scala.collection.immutable.Iterable` of Futures to search + * @param p the predicate which indicates if it's a match + * @return the `Future` holding the optional result of the search + */ + def find[T](futures: scala.collection.immutable.Iterable[Future[T]])(p: T => Boolean)(implicit executor: ExecutionContext): Future[Option[T]] = { + def searchNext(i: Iterator[Future[T]]): Future[Option[T]] = + if (!i.hasNext) successful[Option[T]](None) + else { + i.next().transformWith { + case Success(r) if p(r) => successful(Some(r)) + case other => searchNext(i) + } + } + searchNext(futures.iterator) + } + + /** A non-blocking, asynchronous left fold over the specified futures, + * with the start value of the given zero. + * The fold is performed asynchronously in left-to-right order as the futures become completed. + * The result will be the first failure of any of the futures, or any failure in the actual fold, + * or the result of the fold. + * + * Example: + * {{{ + * val futureSum = Future.foldLeft(futures)(0)(_ + _) + * }}} + * + * @tparam T the type of the value of the input Futures + * @tparam R the type of the value of the returned `Future` + * @param futures the `scala.collection.immutable.Iterable` of Futures to be folded + * @param zero the start value of the fold + * @param op the fold operation to be applied to the zero and futures + * @return the `Future` holding the result of the fold + */ + def foldLeft[T, R](futures: scala.collection.immutable.Iterable[Future[T]])(zero: R)(op: (R, T) => R)(implicit executor: ExecutionContext): Future[R] = + foldNext(futures.iterator, zero, op) + + private[this] def foldNext[T, R](i: Iterator[Future[T]], prevValue: R, op: (R, T) => R)(implicit executor: ExecutionContext): Future[R] = + if (!i.hasNext) successful(prevValue) + else i.next().flatMap { value => foldNext(i, op(prevValue, value), op) } + + /** A non-blocking, asynchronous fold over the specified futures, with the start value of the given zero. * The fold is performed on the thread where the last future is completed, * the result will be the first failure of any of the futures, or any failure in the actual fold, * or the result of the fold. * * Example: * {{{ - * val result = Await.result(Future.fold(futures)(0)(_ + _), 5 seconds) + * val futureSum = Future.fold(futures)(0)(_ + _) * }}} + * + * @tparam T the type of the value of the input Futures + * @tparam R the type of the value of the returned `Future` + * @param futures the `TraversableOnce` of Futures to be folded + * @param zero the start value of the fold + * @param op the fold operation to be applied to the zero and futures + * @return the `Future` holding the result of the fold */ + @deprecated("Use Future.foldLeft instead", "2.12") def fold[T, R](futures: TraversableOnce[Future[T]])(zero: R)(@deprecatedName('foldFun) op: (R, T) => R)(implicit executor: ExecutionContext): Future[R] = { if (futures.isEmpty) successful(zero) else sequence(futures).map(_.foldLeft(zero)(op)) } - /** Initiates a fold over the supplied futures where the fold-zero is the result value of the `Future` that's completed first. + /** Initiates a non-blocking, asynchronous, fold over the supplied futures + * where the fold-zero is the result value of the `Future` that's completed first. * * Example: * {{{ - * val result = Await.result(Future.reduce(futures)(_ + _), 5 seconds) + * val futureSum = Future.reduce(futures)(_ + _) * }}} + * @tparam T the type of the value of the input Futures + * @tparam R the type of the value of the returned `Future` + * @param futures the `TraversableOnce` of Futures to be reduced + * @param op the reduce operation which is applied to the results of the futures + * @return the `Future` holding the result of the reduce */ + @deprecated("Use Future.reduceLeft instead", "2.12") def reduce[T, R >: T](futures: TraversableOnce[Future[T]])(op: (R, T) => R)(implicit executor: ExecutionContext): Future[R] = { if (futures.isEmpty) failed(new NoSuchElementException("reduce attempted on empty collection")) else sequence(futures).map(_ reduceLeft op) } - /** Transforms a `TraversableOnce[A]` into a `Future[TraversableOnce[B]]` using the provided function `A => Future[B]`. + /** Initiates a non-blocking, asynchronous, left reduction over the supplied futures + * where the zero is the result value of the first `Future`. + * + * Example: + * {{{ + * val futureSum = Future.reduceLeft(futures)(_ + _) + * }}} + * @tparam T the type of the value of the input Futures + * @tparam R the type of the value of the returned `Future` + * @param futures the `scala.collection.immutable.Iterable` of Futures to be reduced + * @param op the reduce operation which is applied to the results of the futures + * @return the `Future` holding the result of the reduce + */ + def reduceLeft[T, R >: T](futures: scala.collection.immutable.Iterable[Future[T]])(op: (R, T) => R)(implicit executor: ExecutionContext): Future[R] = { + val i = futures.iterator + if (!i.hasNext) failed(new NoSuchElementException("reduceLeft attempted on empty collection")) + else i.next() flatMap { v => foldNext(i, v, op) } + } + + /** Asynchronously and non-blockingly transforms a `TraversableOnce[A]` into a `Future[TraversableOnce[B]]` + * using the provided function `A => Future[B]`. * This is useful for performing a parallel map. For example, to apply a function to all items of a list * in parallel: * * {{{ * val myFutureList = Future.traverse(myList)(x => Future(myFunc(x))) * }}} + * @tparam A the type of the value inside the Futures in the `TraversableOnce` + * @tparam B the type of the value of the returned `Future` + * @tparam M the type of the `TraversableOnce` of Futures + * @param in the `TraversableOnce` of Futures which will be sequenced + * @param fn the function to apply to the `TraversableOnce` of Futures to produce the results + * @return the `Future` of the `TraversableOnce` of results */ def traverse[A, B, M[X] <: TraversableOnce[X]](in: M[A])(fn: A => Future[B])(implicit cbf: CanBuildFrom[M[A], B, M[B]], executor: ExecutionContext): Future[M[B]] = in.foldLeft(successful(cbf(in))) { (fr, a) => @@ -575,6 +787,7 @@ object Future { for (r <- fr; b <- fb) yield (r += b) }.map(_.result()) + // This is used to run callbacks which are internal // to scala.concurrent; our own callbacks are only // ever used to eventually run another callback, diff --git a/src/library/scala/concurrent/Promise.scala b/src/library/scala/concurrent/Promise.scala index eb8044ed3b..dc4376eba4 100644 --- a/src/library/scala/concurrent/Promise.scala +++ b/src/library/scala/concurrent/Promise.scala @@ -26,12 +26,6 @@ import scala.util.{ Try, Success, Failure } * Note: Using this method may result in non-deterministic concurrent programs. */ trait Promise[T] { - - // used for internal callbacks defined in - // the lexical scope of this trait; - // _never_ for application callbacks. - private implicit def internalExecutor: ExecutionContext = Future.InternalCallbackExecutor - /** Future containing the value of this promise. */ def future: Future[T] @@ -67,7 +61,9 @@ trait Promise[T] { * @return This promise */ final def completeWith(other: Future[T]): this.type = { - other onComplete { this complete _ } + if (other ne this.future) { // this completeWith this doesn't make much sense + other.onComplete(this complete _)(Future.InternalCallbackExecutor) + } this } @@ -76,7 +72,9 @@ trait Promise[T] { * @return This promise */ final def tryCompleteWith(other: Future[T]): this.type = { - other onComplete { this tryComplete _ } + if (other ne this.future) { // this tryCompleteWith this doesn't make much sense + other.onComplete(this tryComplete _)(Future.InternalCallbackExecutor) + } this } @@ -142,5 +140,5 @@ object Promise { * @tparam T the type of the value in the promise * @return the newly created `Promise` object */ - def fromTry[T](result: Try[T]): Promise[T] = new impl.Promise.KeptPromise[T](result) + def fromTry[T](result: Try[T]): Promise[T] = impl.Promise.KeptPromise[T](result) } diff --git a/src/library/scala/concurrent/impl/AbstractPromise.java b/src/library/scala/concurrent/impl/AbstractPromise.java deleted file mode 100644 index b8165b6cde..0000000000 --- a/src/library/scala/concurrent/impl/AbstractPromise.java +++ /dev/null @@ -1,40 +0,0 @@ -/* __ *\ -** ________ ___ / / ___ Scala API ** -** / __/ __// _ | / / / _ | (c) 2003-2013, LAMP/EPFL ** -** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ ** -** /____/\___/_/ |_/____/_/ | | ** -** |/ ** -\* */ - -package scala.concurrent.impl; - - -import scala.concurrent.util.Unsafe; -import java.util.concurrent.atomic.AtomicReferenceFieldUpdater; - - - -abstract class AbstractPromise { - private volatile Object _ref; - - final static long _refoffset; - - static { - try { - _refoffset = Unsafe.instance.objectFieldOffset(AbstractPromise.class.getDeclaredField("_ref")); - } catch (Throwable t) { - throw new ExceptionInInitializerError(t); - } - } - - protected final boolean updateState(Object oldState, Object newState) { - return Unsafe.instance.compareAndSwapObject(this, _refoffset, oldState, newState); - } - - protected final Object getState() { - return _ref; - } - - protected final static AtomicReferenceFieldUpdater<AbstractPromise, Object> updater = - AtomicReferenceFieldUpdater.newUpdater(AbstractPromise.class, Object.class, "_ref"); -}
\ No newline at end of file diff --git a/src/library/scala/concurrent/impl/ExecutionContextImpl.scala b/src/library/scala/concurrent/impl/ExecutionContextImpl.scala index 479720287c..0c7f98ce5a 100644 --- a/src/library/scala/concurrent/impl/ExecutionContextImpl.scala +++ b/src/library/scala/concurrent/impl/ExecutionContextImpl.scala @@ -11,52 +11,88 @@ package scala.concurrent.impl import java.util.concurrent.{ LinkedBlockingQueue, Callable, Executor, ExecutorService, Executors, ThreadFactory, TimeUnit, ThreadPoolExecutor } +import java.util.concurrent.atomic.AtomicInteger import java.util.Collection import scala.concurrent.forkjoin._ import scala.concurrent.{ BlockContext, ExecutionContext, Awaitable, CanAwait, ExecutionContextExecutor, ExecutionContextExecutorService } import scala.util.control.NonFatal +import scala.annotation.tailrec +private[scala] class ExecutionContextImpl private[impl] (val executor: Executor, val reporter: Throwable => Unit) extends ExecutionContextExecutor { + require(executor ne null, "Executor must not be null") + override def execute(runnable: Runnable) = executor execute runnable + override def reportFailure(t: Throwable) = reporter(t) +} -private[scala] class ExecutionContextImpl private[impl] (es: Executor, reporter: Throwable => Unit) extends ExecutionContextExecutor { - // Placed here since the creation of the executor needs to read this val - private[this] val uncaughtExceptionHandler: Thread.UncaughtExceptionHandler = new Thread.UncaughtExceptionHandler { - def uncaughtException(thread: Thread, cause: Throwable): Unit = reporter(cause) - } - val executor: Executor = es match { - case null => createExecutorService - case some => some - } +private[concurrent] object ExecutionContextImpl { // Implement BlockContext on FJP threads - class DefaultThreadFactory(daemonic: Boolean) extends ThreadFactory with ForkJoinPool.ForkJoinWorkerThreadFactory { + final class DefaultThreadFactory( + daemonic: Boolean, + maxThreads: Int, + prefix: String, + uncaught: Thread.UncaughtExceptionHandler) extends ThreadFactory with ForkJoinPool.ForkJoinWorkerThreadFactory { + + require(prefix ne null, "DefaultThreadFactory.prefix must be non null") + require(maxThreads > 0, "DefaultThreadFactory.maxThreads must be greater than 0") + + private final val currentNumberOfThreads = new AtomicInteger(0) + + @tailrec private final def reserveThread(): Boolean = currentNumberOfThreads.get() match { + case `maxThreads` | Int.`MaxValue` => false + case other => currentNumberOfThreads.compareAndSet(other, other + 1) || reserveThread() + } + + @tailrec private final def deregisterThread(): Boolean = currentNumberOfThreads.get() match { + case 0 => false + case other => currentNumberOfThreads.compareAndSet(other, other - 1) || deregisterThread() + } + def wire[T <: Thread](thread: T): T = { thread.setDaemon(daemonic) - thread.setUncaughtExceptionHandler(uncaughtExceptionHandler) + thread.setUncaughtExceptionHandler(uncaught) + thread.setName(prefix + "-" + thread.getId()) thread } - def newThread(runnable: Runnable): Thread = wire(new Thread(runnable)) - - def newThread(fjp: ForkJoinPool): ForkJoinWorkerThread = wire(new ForkJoinWorkerThread(fjp) with BlockContext { - override def blockOn[T](thunk: =>T)(implicit permission: CanAwait): T = { - var result: T = null.asInstanceOf[T] - ForkJoinPool.managedBlock(new ForkJoinPool.ManagedBlocker { - @volatile var isdone = false - override def block(): Boolean = { - result = try thunk finally { isdone = true } - true + // As per ThreadFactory contract newThread should return `null` if cannot create new thread. + def newThread(runnable: Runnable): Thread = + if (reserveThread()) + wire(new Thread(new Runnable { + // We have to decrement the current thread count when the thread exits + override def run() = try runnable.run() finally deregisterThread() + })) else null + + def newThread(fjp: ForkJoinPool): ForkJoinWorkerThread = + if (reserveThread()) { + wire(new ForkJoinWorkerThread(fjp) with BlockContext { + // We have to decrement the current thread count when the thread exits + final override def onTermination(exception: Throwable): Unit = deregisterThread() + final override def blockOn[T](thunk: =>T)(implicit permission: CanAwait): T = { + var result: T = null.asInstanceOf[T] + ForkJoinPool.managedBlock(new ForkJoinPool.ManagedBlocker { + @volatile var isdone = false + override def block(): Boolean = { + result = try { + // When we block, switch out the BlockContext temporarily so that nested blocking does not created N new Threads + BlockContext.withBlockContext(BlockContext.defaultBlockContext) { thunk } + } finally { + isdone = true + } + + true + } + override def isReleasable = isdone + }) + result } - override def isReleasable = isdone }) - result - } - }) + } else null } - def createExecutorService: ExecutorService = { - + def createDefaultExecutorService(reporter: Throwable => Unit): ExecutorService = { def getInt(name: String, default: String) = (try System.getProperty(name, default) catch { case e: SecurityException => default }) match { @@ -65,20 +101,42 @@ private[scala] class ExecutionContextImpl private[impl] (es: Executor, reporter: } def range(floor: Int, desired: Int, ceiling: Int) = scala.math.min(scala.math.max(floor, desired), ceiling) + val numThreads = getInt("scala.concurrent.context.numThreads", "x1") + // The hard limit on the number of active threads that the thread factory will produce + // SI-8955 Deadlocks can happen if maxNoOfThreads is too low, although we're currently not sure + // about what the exact threshhold is. numThreads + 256 is conservatively high. + val maxNoOfThreads = getInt("scala.concurrent.context.maxThreads", "x1") val desiredParallelism = range( getInt("scala.concurrent.context.minThreads", "1"), - getInt("scala.concurrent.context.numThreads", "x1"), - getInt("scala.concurrent.context.maxThreads", "x1")) + numThreads, + maxNoOfThreads) + + // The thread factory must provide additional threads to support managed blocking. + val maxExtraThreads = getInt("scala.concurrent.context.maxExtraThreads", "256") + + val uncaughtExceptionHandler: Thread.UncaughtExceptionHandler = new Thread.UncaughtExceptionHandler { + override def uncaughtException(thread: Thread, cause: Throwable): Unit = reporter(cause) + } - val threadFactory = new DefaultThreadFactory(daemonic = true) + val threadFactory = new ExecutionContextImpl.DefaultThreadFactory(daemonic = true, + maxThreads = maxNoOfThreads + maxExtraThreads, + prefix = "scala-execution-context-global", + uncaught = uncaughtExceptionHandler) try { - new ForkJoinPool( - desiredParallelism, - threadFactory, - uncaughtExceptionHandler, - true) // Async all the way baby + new ForkJoinPool(desiredParallelism, threadFactory, uncaughtExceptionHandler, true) { + override def execute(runnable: Runnable): Unit = { + val fjt: ForkJoinTask[_] = runnable match { + case t: ForkJoinTask[_] => t + case r => new ExecutionContextImpl.AdaptedForkJoinTask(r) + } + Thread.currentThread match { + case fjw: ForkJoinWorkerThread if fjw.getPool eq this => fjt.fork() + case _ => super.execute(fjt) + } + } + } } catch { case NonFatal(t) => System.err.println("Failed to create ForkJoinPool for the default ExecutionContext, falling back to ThreadPoolExecutor") @@ -96,56 +154,42 @@ private[scala] class ExecutionContextImpl private[impl] (es: Executor, reporter: } } - def execute(runnable: Runnable): Unit = executor match { - case fj: ForkJoinPool => - val fjt: ForkJoinTask[_] = runnable match { - case t: ForkJoinTask[_] => t - case r => new ExecutionContextImpl.AdaptedForkJoinTask(r) - } - Thread.currentThread match { - case fjw: ForkJoinWorkerThread if fjw.getPool eq fj => fjt.fork() - case _ => fj execute fjt - } - case generic => generic execute runnable - } - - def reportFailure(t: Throwable) = reporter(t) -} - - -private[concurrent] object ExecutionContextImpl { - final class AdaptedForkJoinTask(runnable: Runnable) extends ForkJoinTask[Unit] { - final override def setRawResult(u: Unit): Unit = () - final override def getRawResult(): Unit = () - final override def exec(): Boolean = try { runnable.run(); true } catch { - case anything: Throwable ⇒ - val t = Thread.currentThread - t.getUncaughtExceptionHandler match { - case null ⇒ - case some ⇒ some.uncaughtException(t, anything) - } - throw anything - } + final override def setRawResult(u: Unit): Unit = () + final override def getRawResult(): Unit = () + final override def exec(): Boolean = try { runnable.run(); true } catch { + case anything: Throwable => + val t = Thread.currentThread + t.getUncaughtExceptionHandler match { + case null => + case some => some.uncaughtException(t, anything) } + throw anything + } + } - def fromExecutor(e: Executor, reporter: Throwable => Unit = ExecutionContext.defaultReporter): ExecutionContextImpl = new ExecutionContextImpl(e, reporter) - def fromExecutorService(es: ExecutorService, reporter: Throwable => Unit = ExecutionContext.defaultReporter): ExecutionContextImpl with ExecutionContextExecutorService = - new ExecutionContextImpl(es, reporter) with ExecutionContextExecutorService { - final def asExecutorService: ExecutorService = executor.asInstanceOf[ExecutorService] - override def execute(command: Runnable) = executor.execute(command) - override def shutdown() { asExecutorService.shutdown() } - override def shutdownNow() = asExecutorService.shutdownNow() - override def isShutdown = asExecutorService.isShutdown - override def isTerminated = asExecutorService.isTerminated - override def awaitTermination(l: Long, timeUnit: TimeUnit) = asExecutorService.awaitTermination(l, timeUnit) - override def submit[T](callable: Callable[T]) = asExecutorService.submit(callable) - override def submit[T](runnable: Runnable, t: T) = asExecutorService.submit(runnable, t) - override def submit(runnable: Runnable) = asExecutorService.submit(runnable) - override def invokeAll[T](callables: Collection[_ <: Callable[T]]) = asExecutorService.invokeAll(callables) - override def invokeAll[T](callables: Collection[_ <: Callable[T]], l: Long, timeUnit: TimeUnit) = asExecutorService.invokeAll(callables, l, timeUnit) - override def invokeAny[T](callables: Collection[_ <: Callable[T]]) = asExecutorService.invokeAny(callables) - override def invokeAny[T](callables: Collection[_ <: Callable[T]], l: Long, timeUnit: TimeUnit) = asExecutorService.invokeAny(callables, l, timeUnit) + def fromExecutor(e: Executor, reporter: Throwable => Unit = ExecutionContext.defaultReporter): ExecutionContextImpl = + new ExecutionContextImpl(Option(e).getOrElse(createDefaultExecutorService(reporter)), reporter) + + def fromExecutorService(es: ExecutorService, reporter: Throwable => Unit = ExecutionContext.defaultReporter): + ExecutionContextImpl with ExecutionContextExecutorService = { + new ExecutionContextImpl(Option(es).getOrElse(createDefaultExecutorService(reporter)), reporter) + with ExecutionContextExecutorService { + final def asExecutorService: ExecutorService = executor.asInstanceOf[ExecutorService] + override def execute(command: Runnable) = executor.execute(command) + override def shutdown() { asExecutorService.shutdown() } + override def shutdownNow() = asExecutorService.shutdownNow() + override def isShutdown = asExecutorService.isShutdown + override def isTerminated = asExecutorService.isTerminated + override def awaitTermination(l: Long, timeUnit: TimeUnit) = asExecutorService.awaitTermination(l, timeUnit) + override def submit[T](callable: Callable[T]) = asExecutorService.submit(callable) + override def submit[T](runnable: Runnable, t: T) = asExecutorService.submit(runnable, t) + override def submit(runnable: Runnable) = asExecutorService.submit(runnable) + override def invokeAll[T](callables: Collection[_ <: Callable[T]]) = asExecutorService.invokeAll(callables) + override def invokeAll[T](callables: Collection[_ <: Callable[T]], l: Long, timeUnit: TimeUnit) = asExecutorService.invokeAll(callables, l, timeUnit) + override def invokeAny[T](callables: Collection[_ <: Callable[T]]) = asExecutorService.invokeAny(callables) + override def invokeAny[T](callables: Collection[_ <: Callable[T]], l: Long, timeUnit: TimeUnit) = asExecutorService.invokeAny(callables, l, timeUnit) + } } } diff --git a/src/library/scala/concurrent/impl/Future.scala b/src/library/scala/concurrent/impl/Future.scala deleted file mode 100644 index 042d32c234..0000000000 --- a/src/library/scala/concurrent/impl/Future.scala +++ /dev/null @@ -1,34 +0,0 @@ -/* __ *\ -** ________ ___ / / ___ Scala API ** -** / __/ __// _ | / / / _ | (c) 2003-2013, LAMP/EPFL ** -** __\ \/ /__/ __ |/ /__/ __ | http://scala-lang.org/ ** -** /____/\___/_/ |_/____/_/ | | ** -** |/ ** -\* */ - -package scala.concurrent.impl - - - -import scala.concurrent.ExecutionContext -import scala.util.control.NonFatal -import scala.util.{ Success, Failure } - - -private[concurrent] object Future { - class PromiseCompletingRunnable[T](body: => T) extends Runnable { - val promise = new Promise.DefaultPromise[T]() - - override def run() = { - promise complete { - try Success(body) catch { case NonFatal(e) => Failure(e) } - } - } - } - - def apply[T](body: =>T)(implicit executor: ExecutionContext): scala.concurrent.Future[T] = { - val runnable = new PromiseCompletingRunnable(body) - executor.prepare.execute(runnable) - runnable.promise.future - } -} diff --git a/src/library/scala/concurrent/impl/Promise.scala b/src/library/scala/concurrent/impl/Promise.scala index b15601058e..078ad45be9 100644 --- a/src/library/scala/concurrent/impl/Promise.scala +++ b/src/library/scala/concurrent/impl/Promise.scala @@ -16,14 +16,42 @@ import scala.util.control.NonFatal import scala.util.{ Try, Success, Failure } import java.io.ObjectInputStream import java.util.concurrent.locks.AbstractQueuedSynchronizer +import java.util.concurrent.atomic.AtomicReference private[concurrent] trait Promise[T] extends scala.concurrent.Promise[T] with scala.concurrent.Future[T] { def future: this.type = this + + import scala.concurrent.Future + import scala.concurrent.impl.Promise.DefaultPromise + + override def transform[S](f: Try[T] => Try[S])(implicit executor: ExecutionContext): Future[S] = { + val p = new DefaultPromise[S]() + onComplete { result => p.complete(try f(result) catch { case NonFatal(t) => Failure(t) }) } + p.future + } + + // If possible, link DefaultPromises to avoid space leaks + override def transformWith[S](f: Try[T] => Future[S])(implicit executor: ExecutionContext): Future[S] = { + val p = new DefaultPromise[S]() + onComplete { + v => try f(v) match { + case fut if fut eq this => p complete v.asInstanceOf[Try[S]] + case dp: DefaultPromise[_] => dp.asInstanceOf[DefaultPromise[S]].linkRootOf(p) + case fut => p completeWith fut + } catch { case NonFatal(t) => p failure t } + } + p.future + } + + override def toString: String = value match { + case Some(result) => "Future("+result+")" + case None => "Future(<not completed>)" + } } /* Precondition: `executor` is prepared, i.e., `executor` has been returned from invocation of `prepare` on some other `ExecutionContext`. */ -private class CallbackRunnable[T](val executor: ExecutionContext, val onComplete: Try[T] => Any) extends Runnable with OnCompleteRunnable { +private final class CallbackRunnable[T](val executor: ExecutionContext, val onComplete: Try[T] => Any) extends Runnable with OnCompleteRunnable { // must be filled in before running it var value: Try[T] = null @@ -89,7 +117,7 @@ private[concurrent] object Promise { * incomplete, or as complete with the same result value. * * A DefaultPromise stores its state entirely in the AnyRef cell exposed by - * AbstractPromise. The type of object stored in the cell fully describes the + * AtomicReference. The type of object stored in the cell fully describes the * current state of the promise. * * 1. List[CallbackRunnable] - The promise is incomplete and has zero or more callbacks @@ -150,8 +178,7 @@ private[concurrent] object Promise { * DefaultPromises, and `linkedRootOf` is currently only designed to be called * by Future.flatMap. */ - class DefaultPromise[T] extends AbstractPromise with Promise[T] { self => - updateState(null, Nil) // The promise is incomplete and has no callbacks + final class DefaultPromise[T] extends AtomicReference[AnyRef](Nil) with Promise[T] { /** Get the root promise for this promise, compressing the link chain to that * promise if necessary. @@ -167,14 +194,23 @@ private[concurrent] object Promise { * be garbage collected. Also, subsequent calls to this method should be * faster as the link chain will be shorter. */ - @tailrec - private def compressedRoot(): DefaultPromise[T] = { - getState match { - case linked: DefaultPromise[_] => - val target = linked.asInstanceOf[DefaultPromise[T]].root - if (linked eq target) target else if (updateState(linked, target)) target else compressedRoot() + private def compressedRoot(): DefaultPromise[T] = + get() match { + case linked: DefaultPromise[_] => compressedRoot(linked) case _ => this } + + @tailrec + private[this] final def compressedRoot(linked: DefaultPromise[_]): DefaultPromise[T] = { + val target = linked.asInstanceOf[DefaultPromise[T]].root + if (linked eq target) target + else if (compareAndSet(linked, target)) target + else { + get() match { + case newLinked: DefaultPromise[_] => compressedRoot(newLinked) + case _ => this + } + } } /** Get the promise at the root of the chain of linked promises. Used by `compressedRoot()`. @@ -182,18 +218,16 @@ private[concurrent] object Promise { * to compress the link chain whenever possible. */ @tailrec - private def root: DefaultPromise[T] = { - getState match { + private def root: DefaultPromise[T] = + get() match { case linked: DefaultPromise[_] => linked.asInstanceOf[DefaultPromise[T]].root case _ => this } - } /** Try waiting for this promise to be completed. */ protected final def tryAwait(atMost: Duration): Boolean = if (!isCompleted) { import Duration.Undefined - import scala.concurrent.Future.InternalCallbackExecutor atMost match { case e if e eq Undefined => throw new IllegalArgumentException("cannot wait for Undefined period") case Duration.Inf => @@ -225,18 +259,18 @@ private[concurrent] object Promise { def value: Option[Try[T]] = value0 @tailrec - private def value0: Option[Try[T]] = getState match { + private def value0: Option[Try[T]] = get() match { case c: Try[_] => Some(c.asInstanceOf[Try[T]]) - case _: DefaultPromise[_] => compressedRoot().value0 + case dp: DefaultPromise[_] => compressedRoot(dp).value0 case _ => None } override def isCompleted: Boolean = isCompleted0 @tailrec - private def isCompleted0: Boolean = getState match { + private def isCompleted0: Boolean = get() match { case _: Try[_] => true - case _: DefaultPromise[_] => compressedRoot().isCompleted0 + case dp: DefaultPromise[_] => compressedRoot(dp).isCompleted0 case _ => false } @@ -254,21 +288,17 @@ private[concurrent] object Promise { */ @tailrec private def tryCompleteAndGetListeners(v: Try[T]): List[CallbackRunnable[T]] = { - getState match { + get() match { case raw: List[_] => val cur = raw.asInstanceOf[List[CallbackRunnable[T]]] - if (updateState(cur, v)) cur else tryCompleteAndGetListeners(v) - case _: DefaultPromise[_] => - compressedRoot().tryCompleteAndGetListeners(v) + if (compareAndSet(cur, v)) cur else tryCompleteAndGetListeners(v) + case dp: DefaultPromise[_] => compressedRoot(dp).tryCompleteAndGetListeners(v) case _ => null } } - def onComplete[U](func: Try[T] => U)(implicit executor: ExecutionContext): Unit = { - val preparedEC = executor.prepare() - val runnable = new CallbackRunnable[T](preparedEC, func) - dispatchOrAddCallback(runnable) - } + def onComplete[U](func: Try[T] => U)(implicit executor: ExecutionContext): Unit = + dispatchOrAddCallback(new CallbackRunnable[T](executor.prepare(), func)) /** Tries to add the callback, if already completed, it dispatches the callback to be executed. * Used by `onComplete()` to add callbacks to a promise and by `link()` to transfer callbacks @@ -276,15 +306,16 @@ private[concurrent] object Promise { */ @tailrec private def dispatchOrAddCallback(runnable: CallbackRunnable[T]): Unit = { - getState match { + get() match { case r: Try[_] => runnable.executeWithValue(r.asInstanceOf[Try[T]]) - case _: DefaultPromise[_] => compressedRoot().dispatchOrAddCallback(runnable) - case listeners: List[_] => if (updateState(listeners, runnable :: listeners)) () else dispatchOrAddCallback(runnable) + case dp: DefaultPromise[_] => compressedRoot(dp).dispatchOrAddCallback(runnable) + case listeners: List[_] => if (compareAndSet(listeners, runnable :: listeners)) () + else dispatchOrAddCallback(runnable) } } /** Link this promise to the root of another promise using `link()`. Should only be - * be called by Future.flatMap. + * be called by transformWith. */ protected[concurrent] final def linkRootOf(target: DefaultPromise[T]): Unit = link(target.compressedRoot()) @@ -299,18 +330,17 @@ private[concurrent] object Promise { */ @tailrec private def link(target: DefaultPromise[T]): Unit = if (this ne target) { - getState match { + get() match { case r: Try[_] => - if (!target.tryComplete(r.asInstanceOf[Try[T]])) { - // Currently linking is done from Future.flatMap, which should ensure only - // one promise can be completed. Therefore this situation is unexpected. + if (!target.tryComplete(r.asInstanceOf[Try[T]])) throw new IllegalStateException("Cannot link completed promises together") - } - case _: DefaultPromise[_] => - compressedRoot().link(target) - case listeners: List[_] => if (updateState(listeners, target)) { - if (!listeners.isEmpty) listeners.asInstanceOf[List[CallbackRunnable[T]]].foreach(target.dispatchOrAddCallback(_)) - } else link(target) + case dp: DefaultPromise[_] => + compressedRoot(dp).link(target) + case listeners: List[_] if compareAndSet(listeners, target) => + if (listeners.nonEmpty) + listeners.asInstanceOf[List[CallbackRunnable[T]]].foreach(target.dispatchOrAddCallback(_)) + case _ => + link(target) } } } @@ -319,23 +349,58 @@ private[concurrent] object Promise { * * Useful in Future-composition when a value to contribute is already available. */ - final class KeptPromise[T](suppliedValue: Try[T]) extends Promise[T] { + object KeptPromise { + import scala.concurrent.Future + import scala.reflect.ClassTag + + private[this] sealed trait Kept[T] extends Promise[T] { + def result: Try[T] + + override def value: Option[Try[T]] = Some(result) - val value = Some(resolveTry(suppliedValue)) + override def isCompleted: Boolean = true - override def isCompleted: Boolean = true + override def tryComplete(value: Try[T]): Boolean = false - def tryComplete(value: Try[T]): Boolean = false + override def onComplete[U](func: Try[T] => U)(implicit executor: ExecutionContext): Unit = + (new CallbackRunnable(executor.prepare(), func)).executeWithValue(result) - def onComplete[U](func: Try[T] => U)(implicit executor: ExecutionContext): Unit = { - val completedAs = value.get - val preparedEC = executor.prepare() - (new CallbackRunnable(preparedEC, func)).executeWithValue(completedAs) + override def ready(atMost: Duration)(implicit permit: CanAwait): this.type = this + + override def result(atMost: Duration)(implicit permit: CanAwait): T = result.get } - def ready(atMost: Duration)(implicit permit: CanAwait): this.type = this + private[this] final class Successful[T](val result: Success[T]) extends Kept[T] { + override def onFailure[U](pf: PartialFunction[Throwable, U])(implicit executor: ExecutionContext): Unit = () + override def failed: Future[Throwable] = KeptPromise(Failure(new NoSuchElementException("Future.failed not completed with a throwable."))).future + override def recover[U >: T](pf: PartialFunction[Throwable, U])(implicit executor: ExecutionContext): Future[U] = this + override def recoverWith[U >: T](pf: PartialFunction[Throwable, Future[U]])(implicit executor: ExecutionContext): Future[U] = this + override def fallbackTo[U >: T](that: Future[U]): Future[U] = this + } - def result(atMost: Duration)(implicit permit: CanAwait): T = value.get.get + private[this] final class Failed[T](val result: Failure[T]) extends Kept[T] { + private[this] final def thisAs[S]: Future[S] = future.asInstanceOf[Future[S]] + + override def onSuccess[U](pf: PartialFunction[T, U])(implicit executor: ExecutionContext): Unit = () + override def failed: Future[Throwable] = thisAs[Throwable] + override def foreach[U](f: T => U)(implicit executor: ExecutionContext): Unit = () + override def map[S](f: T => S)(implicit executor: ExecutionContext): Future[S] = thisAs[S] + override def flatMap[S](f: T => Future[S])(implicit executor: ExecutionContext): Future[S] = thisAs[S] + override def flatten[S](implicit ev: T <:< Future[S]): Future[S] = thisAs[S] + override def filter(p: T => Boolean)(implicit executor: ExecutionContext): Future[T] = this + override def collect[S](pf: PartialFunction[T, S])(implicit executor: ExecutionContext): Future[S] = thisAs[S] + override def zip[U](that: Future[U]): Future[(T, U)] = thisAs[(T,U)] + override def zipWith[U, R](that: Future[U])(f: (T, U) => R)(implicit executor: ExecutionContext): Future[R] = thisAs[R] + override def fallbackTo[U >: T](that: Future[U]): Future[U] = + if (this eq that) this else that.recoverWith({ case _ => this })(InternalCallbackExecutor) + override def mapTo[S](implicit tag: ClassTag[S]): Future[S] = thisAs[S] + } + + def apply[T](result: Try[T]): scala.concurrent.Promise[T] = + resolveTry(result) match { + case s @ Success(_) => new Successful(s) + case f @ Failure(_) => new Failed(f) + } } } diff --git a/src/library/scala/io/Source.scala b/src/library/scala/io/Source.scala index 74c3e06839..dbd6a5f6f2 100644 --- a/src/library/scala/io/Source.scala +++ b/src/library/scala/io/Source.scala @@ -10,7 +10,7 @@ package scala package io import scala.collection.AbstractIterator -import java.io.{ FileInputStream, InputStream, PrintStream, File => JFile } +import java.io.{ FileInputStream, InputStream, PrintStream, File => JFile, Closeable } import java.net.{ URI, URL } /** This object provides convenience methods to create an iterable @@ -176,7 +176,7 @@ object Source { * @author Burak Emir * @version 1.0 */ -abstract class Source extends Iterator[Char] { +abstract class Source extends Iterator[Char] with Closeable { /** the actual iterator */ protected val iter: Iterator[Char] diff --git a/src/library/scala/runtime/BoxesRunTime.java b/src/library/scala/runtime/BoxesRunTime.java index 82a3b00ac4..a6df20165d 100644 --- a/src/library/scala/runtime/BoxesRunTime.java +++ b/src/library/scala/runtime/BoxesRunTime.java @@ -183,7 +183,7 @@ public final class BoxesRunTime return xc.equals(y); } - private static boolean equalsNumChar(java.lang.Number xn, java.lang.Character yc) { + public static boolean equalsNumChar(java.lang.Number xn, java.lang.Character yc) { if (yc == null) return xn == null; diff --git a/src/library/scala/runtime/ScalaRunTime.scala b/src/library/scala/runtime/ScalaRunTime.scala index f50059ce54..6c69ebae9b 100644 --- a/src/library/scala/runtime/ScalaRunTime.scala +++ b/src/library/scala/runtime/ScalaRunTime.scala @@ -13,6 +13,7 @@ import scala.collection.{ Seq, IndexedSeq, TraversableView, AbstractIterator } import scala.collection.mutable.WrappedArray import scala.collection.immutable.{ StringLike, NumericRange, List, Stream, Nil, :: } import scala.collection.generic.{ Sorted, IsTraversableLike } +import scala.collection.parallel.ParIterable import scala.reflect.{ ClassTag, classTag } import scala.util.control.ControlThrowable import java.lang.{ Class => jClass } @@ -326,6 +327,7 @@ object ScalaRunTime { case x: AnyRef if isArray(x) => arrayToString(x) case x: scala.collection.Map[_, _] => x.iterator take maxElements map mapInner mkString (x.stringPrefix + "(", ", ", ")") case x: Iterable[_] => x.iterator take maxElements map inner mkString (x.stringPrefix + "(", ", ", ")") + case x: ParIterable[_] => x.iterator take maxElements map inner mkString (x.stringPrefix + "(", ", ", ")") case x: Traversable[_] => x take maxElements map inner mkString (x.stringPrefix + "(", ", ", ")") case x: Product1[_] if isTuple(x) => "(" + inner(x._1) + ",)" // that special trailing comma case x: Product if isTuple(x) => x.productIterator map inner mkString ("(", ",", ")") diff --git a/src/library/scala/sys/process/BasicIO.scala b/src/library/scala/sys/process/BasicIO.scala index b31bbf0540..866dac4458 100644 --- a/src/library/scala/sys/process/BasicIO.scala +++ b/src/library/scala/sys/process/BasicIO.scala @@ -221,7 +221,7 @@ object BasicIO { */ def transferFully(in: InputStream, out: OutputStream): Unit = try transferFullyImpl(in, out) - catch onInterrupt(()) + catch onIOInterrupt(()) private[this] def appendLine(buffer: Appendable): String => Unit = line => { buffer append line diff --git a/src/library/scala/sys/process/ProcessImpl.scala b/src/library/scala/sys/process/ProcessImpl.scala index 2b7fcdeb73..d15f1a2b3d 100644 --- a/src/library/scala/sys/process/ProcessImpl.scala +++ b/src/library/scala/sys/process/ProcessImpl.scala @@ -109,45 +109,46 @@ private[process] trait ProcessImpl { } private[process] class PipedProcesses(a: ProcessBuilder, b: ProcessBuilder, defaultIO: ProcessIO, toError: Boolean) extends CompoundProcess { - protected[this] override def runAndExitValue() = { - val currentSource = new SyncVar[Option[InputStream]] - val pipeOut = new PipedOutputStream - val source = new PipeSource(currentSource, pipeOut, a.toString) + protected[this] override def runAndExitValue() = runAndExitValue(new PipeSource(a.toString), new PipeSink(b.toString)) + protected[this] def runAndExitValue(source: PipeSource, sink: PipeSink): Option[Int] = { + source connectOut sink source.start() - - val pipeIn = new PipedInputStream(pipeOut) - val currentSink = new SyncVar[Option[OutputStream]] - val sink = new PipeSink(pipeIn, currentSink, b.toString) sink.start() - def handleOutOrError(fromOutput: InputStream) = currentSource put Some(fromOutput) + /** Release PipeSource, PipeSink and Process in the correct order. + * If once connect Process with Source or Sink, then the order of releasing them + * must be Source -> Sink -> Process, otherwise IOException will be thrown. */ + def releaseResources(so: PipeSource, sk: PipeSink, p: Process *) = { + so.release() + sk.release() + p foreach( _.destroy() ) + } val firstIO = - if (toError) - defaultIO.withError(handleOutOrError) - else - defaultIO.withOutput(handleOutOrError) - val secondIO = defaultIO.withInput(toInput => currentSink put Some(toInput)) - - val second = b.run(secondIO) - val first = a.run(firstIO) - try { - runInterruptible { - val exit1 = first.exitValue() - currentSource put None - currentSink put None - val exit2 = second.exitValue() - // Since file redirection (e.g. #>) is implemented as a piped process, - // we ignore its exit value so cmd #> file doesn't always return 0. - if (b.hasExitValue) exit2 else exit1 - } { - first.destroy() - second.destroy() + if (toError) defaultIO.withError(source.connectIn) + else defaultIO.withOutput(source.connectIn) + val secondIO = defaultIO.withInput(sink.connectOut) + + val second = + try b.run(secondIO) + catch onError { err => + releaseResources(source, sink) + throw err } - } - finally { - BasicIO close pipeIn - BasicIO close pipeOut + val first = + try a.run(firstIO) + catch onError { err => + releaseResources(source, sink, second) + throw err + } + runInterruptible { + val exit1 = first.exitValue() + val exit2 = second.exitValue() + // Since file redirection (e.g. #>) is implemented as a piped process, + // we ignore its exit value so cmd #> file doesn't always return 0. + if (b.hasExitValue) exit2 else exit1 + } { + releaseResources(source, sink, first, second) } } } @@ -168,37 +169,46 @@ private[process] trait ProcessImpl { } } - private[process] class PipeSource( - currentSource: SyncVar[Option[InputStream]], - pipe: PipedOutputStream, - label: => String - ) extends PipeThread(false, () => label) { - - final override def run(): Unit = currentSource.get match { - case Some(source) => - try runloop(source, pipe) - finally currentSource.unset() - - run() - case None => - currentSource.unset() - BasicIO close pipe + private[process] class PipeSource(label: => String) extends PipeThread(false, () => label) { + protected[this] val pipe = new PipedOutputStream + protected[this] val source = new LinkedBlockingQueue[Option[InputStream]] + override def run(): Unit = { + try { + source.take match { + case Some(in) => runloop(in, pipe) + case None => + } + } + catch onInterrupt(()) + finally BasicIO close pipe + } + def connectIn(in: InputStream): Unit = source add Some(in) + def connectOut(sink: PipeSink): Unit = sink connectIn pipe + def release(): Unit = { + interrupt() + source add None + join() } } - private[process] class PipeSink( - pipe: PipedInputStream, - currentSink: SyncVar[Option[OutputStream]], - label: => String - ) extends PipeThread(true, () => label) { - - final override def run(): Unit = currentSink.get match { - case Some(sink) => - try runloop(pipe, sink) - finally currentSink.unset() - - run() - case None => - currentSink.unset() + private[process] class PipeSink(label: => String) extends PipeThread(true, () => label) { + protected[this] val pipe = new PipedInputStream + protected[this] val sink = new LinkedBlockingQueue[Option[OutputStream]] + override def run(): Unit = { + try { + sink.take match { + case Some(out) => runloop(pipe, out) + case None => + } + } + catch onInterrupt(()) + finally BasicIO close pipe + } + def connectOut(out: OutputStream): Unit = sink add Some(out) + def connectIn(pipeOut: PipedOutputStream): Unit = pipe connect pipeOut + def release(): Unit = { + interrupt() + sink add None + join() } } diff --git a/src/library/scala/sys/process/package.scala b/src/library/scala/sys/process/package.scala index 1340a6c415..91fa99e3df 100644 --- a/src/library/scala/sys/process/package.scala +++ b/src/library/scala/sys/process/package.scala @@ -224,16 +224,26 @@ package scala.sys { final val processDebug = props contains "scala.process.debug" dbg("Initializing process package.") - type =?>[-A, +B] = PartialFunction[A, B] - type Closeable = java.io.Closeable - type File = java.io.File - type IOException = java.io.IOException - type InputStream = java.io.InputStream - type JProcess = java.lang.Process - type JProcessBuilder = java.lang.ProcessBuilder - type OutputStream = java.io.OutputStream - type SyncVar[T] = scala.concurrent.SyncVar[T] - type URL = java.net.URL + type =?>[-A, +B] = PartialFunction[A, B] + type Closeable = java.io.Closeable + type File = java.io.File + type IOException = java.io.IOException + type InterruptedIOException = java.io.InterruptedIOException + type InputStream = java.io.InputStream + type JProcess = java.lang.Process + type JProcessBuilder = java.lang.ProcessBuilder + type LinkedBlockingQueue[T] = java.util.concurrent.LinkedBlockingQueue[T] + type OutputStream = java.io.OutputStream + type SyncVar[T] = scala.concurrent.SyncVar[T] + type URL = java.net.URL + + def onError[T](handler: Throwable => T): Throwable =?> T = { + case e @ _ => handler(e) + } + + def onIOInterrupt[T](handler: => T): Throwable =?> T = { + case _: InterruptedIOException => handler + } def onInterrupt[T](handler: => T): Throwable =?> T = { case _: InterruptedException => handler diff --git a/src/library/scala/util/Try.scala b/src/library/scala/util/Try.scala index b0cf122f2a..f08cc18f7d 100644 --- a/src/library/scala/util/Try.scala +++ b/src/library/scala/util/Try.scala @@ -74,16 +74,11 @@ sealed abstract class Try[+T] { * * ''Note:'': This will throw an exception if it is not a success and default throws an exception. */ - def getOrElse[U >: T](default: => U): U = - if (isSuccess) get else default + def getOrElse[U >: T](default: => U): U /** Returns this `Try` if it's a `Success` or the given `default` argument if this is a `Failure`. */ - def orElse[U >: T](default: => Try[U]): Try[U] = - try if (isSuccess) this else default - catch { - case NonFatal(e) => Failure(e) - } + def orElse[U >: T](default: => Try[U]): Try[U] /** Returns the value from this `Success` or throws the exception if this is a `Failure`. */ @@ -107,6 +102,11 @@ sealed abstract class Try[+T] { def map[U](f: T => U): Try[U] /** + * Applies the given partial function to the value from this `Success` or returns this if this is a `Failure`. + */ + def collect[U](pf: PartialFunction[T, U]): Try[U] + + /** * Converts this to a `Failure` if the predicate is not satisfied. */ def filter(p: T => Boolean): Try[T] @@ -133,6 +133,7 @@ sealed abstract class Try[+T] { * collection" contract even though it seems unlikely to matter much in a * collection with max size 1. */ + @deprecatedInheritance("You were never supposed to be able to extend this class.", "2.12") class WithFilter(p: T => Boolean) { def map[U](f: T => U): Try[U] = Try.this filter p map f def flatMap[U](f: T => Try[U]): Try[U] = Try.this filter p flatMap f @@ -144,18 +145,18 @@ sealed abstract class Try[+T] { * Applies the given function `f` if this is a `Failure`, otherwise returns this if this is a `Success`. * This is like `flatMap` for the exception. */ - def recoverWith[U >: T](f: PartialFunction[Throwable, Try[U]]): Try[U] + def recoverWith[U >: T](@deprecatedName('f) pf: PartialFunction[Throwable, Try[U]]): Try[U] /** * Applies the given function `f` if this is a `Failure`, otherwise returns this if this is a `Success`. * This is like map for the exception. */ - def recover[U >: T](f: PartialFunction[Throwable, U]): Try[U] + def recover[U >: T](@deprecatedName('f) pf: PartialFunction[Throwable, U]): Try[U] /** * Returns `None` if this is a `Failure` or a `Some` containing the value if this is a `Success`. */ - def toOption: Option[T] = if (isSuccess) Some(get) else None + def toOption: Option[T] /** * Transforms a nested `Try`, ie, a `Try` of type `Try[Try[T]]`, @@ -172,14 +173,7 @@ sealed abstract class Try[+T] { /** Completes this `Try` by applying the function `f` to this if this is of type `Failure`, or conversely, by applying * `s` if this is a `Success`. */ - def transform[U](s: T => Try[U], f: Throwable => Try[U]): Try[U] = - try this match { - case Success(v) => s(v) - case Failure(e) => f(e) - } catch { - case NonFatal(e) => Failure(e) - } - + def transform[U](s: T => Try[U], f: Throwable => Try[U]): Try[U] } object Try { @@ -191,57 +185,55 @@ object Try { try Success(r) catch { case NonFatal(e) => Failure(e) } - } final case class Failure[+T](exception: Throwable) extends Try[T] { - def isFailure: Boolean = true - def isSuccess: Boolean = false - def recoverWith[U >: T](f: PartialFunction[Throwable, Try[U]]): Try[U] = - try { - if (f isDefinedAt exception) f(exception) else this - } catch { - case NonFatal(e) => Failure(e) - } - def get: T = throw exception - def flatMap[U](f: T => Try[U]): Try[U] = this.asInstanceOf[Try[U]] - def flatten[U](implicit ev: T <:< Try[U]): Try[U] = this.asInstanceOf[Try[U]] - def foreach[U](f: T => U): Unit = () - def map[U](f: T => U): Try[U] = this.asInstanceOf[Try[U]] - def filter(p: T => Boolean): Try[T] = this - def recover[U >: T](rescueException: PartialFunction[Throwable, U]): Try[U] = - try { - if (rescueException isDefinedAt exception) { - Try(rescueException(exception)) - } else this - } catch { - case NonFatal(e) => Failure(e) - } - def failed: Try[Throwable] = Success(exception) + override def isFailure: Boolean = true + override def isSuccess: Boolean = false + override def get: T = throw exception + override def getOrElse[U >: T](default: => U): U = default + override def orElse[U >: T](default: => Try[U]): Try[U] = + try default catch { case NonFatal(e) => Failure(e) } + override def flatMap[U](f: T => Try[U]): Try[U] = this.asInstanceOf[Try[U]] + override def flatten[U](implicit ev: T <:< Try[U]): Try[U] = this.asInstanceOf[Try[U]] + override def foreach[U](f: T => U): Unit = () + override def transform[U](s: T => Try[U], f: Throwable => Try[U]): Try[U] = + try f(exception) catch { case NonFatal(e) => Failure(e) } + override def map[U](f: T => U): Try[U] = this.asInstanceOf[Try[U]] + override def collect[U](pf: PartialFunction[T, U]): Try[U] = this.asInstanceOf[Try[U]] + override def filter(p: T => Boolean): Try[T] = this + override def recover[U >: T](@deprecatedName('rescueException) pf: PartialFunction[Throwable, U]): Try[U] = + try { if (pf isDefinedAt exception) Success(pf(exception)) else this } catch { case NonFatal(e) => Failure(e) } + override def recoverWith[U >: T](@deprecatedName('f) pf: PartialFunction[Throwable, Try[U]]): Try[U] = + try { if (pf isDefinedAt exception) pf(exception) else this } catch { case NonFatal(e) => Failure(e) } + override def failed: Try[Throwable] = Success(exception) + override def toOption: Option[T] = None } final case class Success[+T](value: T) extends Try[T] { - def isFailure: Boolean = false - def isSuccess: Boolean = true - def recoverWith[U >: T](f: PartialFunction[Throwable, Try[U]]): Try[U] = this - def get = value - def flatMap[U](f: T => Try[U]): Try[U] = - try f(value) - catch { - case NonFatal(e) => Failure(e) - } - def flatten[U](implicit ev: T <:< Try[U]): Try[U] = value - def foreach[U](f: T => U): Unit = f(value) - def map[U](f: T => U): Try[U] = Try[U](f(value)) - def filter(p: T => Boolean): Try[T] = { + override def isFailure: Boolean = false + override def isSuccess: Boolean = true + override def get = value + override def getOrElse[U >: T](default: => U): U = get + override def orElse[U >: T](default: => Try[U]): Try[U] = this + override def flatMap[U](f: T => Try[U]): Try[U] = + try f(value) catch { case NonFatal(e) => Failure(e) } + override def flatten[U](implicit ev: T <:< Try[U]): Try[U] = value + override def foreach[U](f: T => U): Unit = f(value) + override def transform[U](s: T => Try[U], f: Throwable => Try[U]): Try[U] = this flatMap s + override def map[U](f: T => U): Try[U] = Try[U](f(value)) + override def collect[U](pf: PartialFunction[T, U]): Try[U] = try { - if (p(value)) this + if (pf isDefinedAt value) Success(pf(value)) else Failure(new NoSuchElementException("Predicate does not hold for " + value)) - } catch { - case NonFatal(e) => Failure(e) - } - } - def recover[U >: T](rescueException: PartialFunction[Throwable, U]): Try[U] = this - def failed: Try[Throwable] = Failure(new UnsupportedOperationException("Success.failed")) + } catch { case NonFatal(e) => Failure(e) } + override def filter(p: T => Boolean): Try[T] = + try { + if (p(value)) this else Failure(new NoSuchElementException("Predicate does not hold for " + value)) + } catch { case NonFatal(e) => Failure(e) } + override def recover[U >: T](@deprecatedName('rescueException) pf: PartialFunction[Throwable, U]): Try[U] = this + override def recoverWith[U >: T](@deprecatedName('f) pf: PartialFunction[Throwable, Try[U]]): Try[U] = this + override def failed: Try[Throwable] = Failure(new UnsupportedOperationException("Success.failed")) + override def toOption: Option[T] = Some(value) } diff --git a/src/reflect/scala/reflect/internal/Mirrors.scala b/src/reflect/scala/reflect/internal/Mirrors.scala index 4a35e024de..2fca99aff9 100644 --- a/src/reflect/scala/reflect/internal/Mirrors.scala +++ b/src/reflect/scala/reflect/internal/Mirrors.scala @@ -180,7 +180,7 @@ trait Mirrors extends api.Mirrors { def getPackageObject(fullname: String): ModuleSymbol = getPackageObject(newTermName(fullname)) def getPackageObject(fullname: TermName): ModuleSymbol = - (getPackage(fullname).info member nme.PACKAGE) match { + (getPackage(fullname).packageObject) match { case x: ModuleSymbol => x case _ => MissingRequirementError.notFound("package object " + fullname) } @@ -191,15 +191,6 @@ trait Mirrors extends api.Mirrors { def getPackageObjectIfDefined(fullname: TermName): Symbol = wrapMissing(getPackageObject(fullname)) - final def getPackageObjectWithMember(pre: Type, sym: Symbol): Symbol = { - // The owner of a symbol which requires package qualification may be the - // package object iself, but it also could be any superclass of the package - // object. In the latter case, we must go through the qualifier's info - // to obtain the right symbol. - if (sym.owner.isModuleClass) sym.owner.sourceModule // fast path, if the member is owned by a module class, that must be linked to the package object - else pre member nme.PACKAGE // otherwise we have to findMember - } - override def staticPackage(fullname: String): ModuleSymbol = try ensurePackageSymbol(fullname.toString, getModuleOrClass(newTermNameCached(fullname)), allowModules = false) catch { case mre: MissingRequirementError => throw new ScalaReflectionException(mre.msg) } diff --git a/src/reflect/scala/reflect/internal/StdNames.scala b/src/reflect/scala/reflect/internal/StdNames.scala index 99ff6a10b4..b79036724d 100644 --- a/src/reflect/scala/reflect/internal/StdNames.scala +++ b/src/reflect/scala/reflect/internal/StdNames.scala @@ -111,6 +111,7 @@ trait StdNames { val PACKAGE: NameType = "package" val ROOT: NameType = "<root>" val SPECIALIZED_SUFFIX: NameType = "$sp" + val CASE_ACCESSOR: NameType = "$access" // value types (and AnyRef) are all used as terms as well // as (at least) arguments to the @specialize annotation. diff --git a/src/reflect/scala/reflect/internal/SymbolTable.scala b/src/reflect/scala/reflect/internal/SymbolTable.scala index ed5c68fe82..7539b6e046 100644 --- a/src/reflect/scala/reflect/internal/SymbolTable.scala +++ b/src/reflect/scala/reflect/internal/SymbolTable.scala @@ -332,7 +332,7 @@ abstract class SymbolTable extends macros.Universe /** if there's a `package` member object in `pkgClass`, enter its members into it. */ def openPackageModule(pkgClass: Symbol) { - val pkgModule = pkgClass.info.decl(nme.PACKAGEkw) + val pkgModule = pkgClass.packageObject def fromSource = pkgModule.rawInfo match { case ltp: SymLoader => ltp.fromSource case _ => false diff --git a/src/reflect/scala/reflect/internal/Symbols.scala b/src/reflect/scala/reflect/internal/Symbols.scala index 2c039ab5a7..aa62df7093 100644 --- a/src/reflect/scala/reflect/internal/Symbols.scala +++ b/src/reflect/scala/reflect/internal/Symbols.scala @@ -810,6 +810,12 @@ trait Symbols extends api.Symbols { self: SymbolTable => */ def skipPackageObject: Symbol = this + /** The package object symbol corresponding to this package or package class symbol, or NoSymbol otherwise */ + def packageObject: Symbol = + if (isPackageClass) tpe.packageObject + else if (isPackage) moduleClass.packageObject + else NoSymbol + /** If this is a constructor, its owner: otherwise this. */ final def skipConstructor: Symbol = if (isConstructor) owner else this @@ -3364,13 +3370,9 @@ trait Symbols extends api.Symbols { self: SymbolTable => def implicitMembers: Scope = { val tp = info if ((implicitMembersCacheKey1 ne tp) || (implicitMembersCacheKey2 ne tp.decls.elems)) { - // Skip a package object class, because the members are also in - // the package and we wish to avoid spurious ambiguities as in pos/t3999. - if (!isPackageObjectClass) { - implicitMembersCacheValue = tp.implicitMembers - implicitMembersCacheKey1 = tp - implicitMembersCacheKey2 = tp.decls.elems - } + implicitMembersCacheValue = tp.membersBasedOnFlags(BridgeFlags, IMPLICIT) + implicitMembersCacheKey1 = tp + implicitMembersCacheKey2 = tp.decls.elems } implicitMembersCacheValue } diff --git a/src/reflect/scala/reflect/internal/TreeGen.scala b/src/reflect/scala/reflect/internal/TreeGen.scala index 6e8e992d16..6ddd49045c 100644 --- a/src/reflect/scala/reflect/internal/TreeGen.scala +++ b/src/reflect/scala/reflect/internal/TreeGen.scala @@ -191,8 +191,8 @@ abstract class TreeGen { ) val pkgQualifier = if (needsPackageQualifier) { - val packageObject = rootMirror.getPackageObjectWithMember(qual.tpe, sym) - Select(qual, nme.PACKAGE) setSymbol packageObject setType singleType(qual.tpe, packageObject) + val packageObject = qualsym.packageObject + Select(qual, nme.PACKAGE) setSymbol packageObject setType packageObject.typeOfThis } else qual diff --git a/src/reflect/scala/reflect/internal/Types.scala b/src/reflect/scala/reflect/internal/Types.scala index a95f626a0b..325de013d7 100644 --- a/src/reflect/scala/reflect/internal/Types.scala +++ b/src/reflect/scala/reflect/internal/Types.scala @@ -589,7 +589,12 @@ trait Types def nonPrivateMembersAdmitting(admit: Long): Scope = membersBasedOnFlags(BridgeAndPrivateFlags & ~admit, 0) /** A list of all implicit symbols of this type (defined or inherited) */ - def implicitMembers: Scope = membersBasedOnFlags(BridgeFlags, IMPLICIT) + def implicitMembers: Scope = { + typeSymbolDirect match { + case sym: ModuleClassSymbol => sym.implicitMembers + case _ => membersBasedOnFlags(BridgeFlags, IMPLICIT) + } + } /** A list of all deferred symbols of this type (defined or inherited) */ def deferredMembers: Scope = membersBasedOnFlags(BridgeFlags, DEFERRED) @@ -606,6 +611,8 @@ trait Types def nonPrivateMember(name: Name): Symbol = memberBasedOnName(name, BridgeAndPrivateFlags) + def packageObject: Symbol = member(nme.PACKAGE) + /** The non-private member with given name, admitting members with given flags `admit`. * "Admitting" refers to the fact that members with a PRIVATE, BRIDGE, or VBRIDGE * flag are usually excluded from findMember results, but supplying any of those flags @@ -1600,7 +1607,14 @@ trait Types private var normalized: Type = _ private def normalizeImpl = { // TODO see comments around def intersectionType and def merge - def flatten(tps: List[Type]): List[Type] = tps flatMap { case RefinedType(parents, ds) if ds.isEmpty => flatten(parents) case tp => List(tp) } + // SI-8575 The dealias is needed here to keep subtyping transitive, example in run/t8575b.scala + def flatten(tps: List[Type]): List[Type] = { + def dealiasRefinement(tp: Type) = if (tp.dealias.isInstanceOf[RefinedType]) tp.dealias else tp + tps map dealiasRefinement flatMap { + case RefinedType(parents, ds) if ds.isEmpty => flatten(parents) + case tp => List(tp) + } + } val flattened = flatten(parents).distinct if (decls.isEmpty && hasLength(flattened, 1)) { flattened.head diff --git a/src/reflect/scala/reflect/internal/transform/Erasure.scala b/src/reflect/scala/reflect/internal/transform/Erasure.scala index d5b5967145..ac7839bcfd 100644 --- a/src/reflect/scala/reflect/internal/transform/Erasure.scala +++ b/src/reflect/scala/reflect/internal/transform/Erasure.scala @@ -280,8 +280,17 @@ trait Erasure { } object boxingErasure extends ScalaErasureMap { + private var boxPrimitives = true + + override def applyInArray(tp: Type): Type = { + val saved = boxPrimitives + boxPrimitives = false + try super.applyInArray(tp) + finally boxPrimitives = saved + } + override def eraseNormalClassRef(tref: TypeRef) = - if (isPrimitiveValueClass(tref.sym)) boxedClass(tref.sym).tpe + if (boxPrimitives && isPrimitiveValueClass(tref.sym)) boxedClass(tref.sym).tpe else super.eraseNormalClassRef(tref) override def eraseDerivedValueClassRef(tref: TypeRef) = super.eraseNormalClassRef(tref) diff --git a/src/scaladoc/scala/tools/nsc/doc/base/MemberLookupBase.scala b/src/scaladoc/scala/tools/nsc/doc/base/MemberLookupBase.scala index cc217d2f80..f853df0484 100755 --- a/src/scaladoc/scala/tools/nsc/doc/base/MemberLookupBase.scala +++ b/src/scaladoc/scala/tools/nsc/doc/base/MemberLookupBase.scala @@ -62,15 +62,15 @@ trait MemberLookupBase { syms.flatMap { case (sym, owner) => // reconstruct the original link def linkName(sym: Symbol) = { - def nameString(s: Symbol) = s.nameString + (if ((s.isModule || s.isModuleClass) && !s.isPackage) "$" else "") - val packageSuffix = if (sym.isPackage) ".package" else "" + def nameString(s: Symbol) = s.nameString + (if ((s.isModule || s.isModuleClass) && !s.hasPackageFlag) "$" else "") + val packageSuffix = if (sym.hasPackageFlag) ".package" else "" sym.ownerChain.reverse.filterNot(isRoot(_)).map(nameString(_)).mkString(".") + packageSuffix } - if (sym.isClass || sym.isModule || sym.isTrait || sym.isPackage) + if (sym.isClass || sym.isModule || sym.isTrait || sym.hasPackageFlag) findExternalLink(sym, linkName(sym)) - else if (owner.isClass || owner.isModule || owner.isTrait || owner.isPackage) + else if (owner.isClass || owner.isModule || owner.isTrait || owner.hasPackageFlag) findExternalLink(sym, linkName(owner) + "@" + externalSignature(sym)) else None diff --git a/src/scaladoc/scala/tools/nsc/doc/html/page/Template.scala b/src/scaladoc/scala/tools/nsc/doc/html/page/Template.scala index b5a8d1ac36..45cef88f7a 100644 --- a/src/scaladoc/scala/tools/nsc/doc/html/page/Template.scala +++ b/src/scaladoc/scala/tools/nsc/doc/html/page/Template.scala @@ -143,7 +143,7 @@ class Template(universe: doc.Universe, generator: DiagramGenerator, tpl: DocTemp { if (tpl.linearizationTemplates.isEmpty && tpl.conversions.isEmpty) NodeSeq.Empty else { if (!tpl.linearizationTemplates.isEmpty) - <div id="ancestors"> + <div class="ancestors"> <span class="filtertype">Inherited<br/> </span> <ol id="linearization"> @@ -153,7 +153,7 @@ class Template(universe: doc.Universe, generator: DiagramGenerator, tpl: DocTemp else NodeSeq.Empty } ++ { if (!tpl.conversions.isEmpty) - <div id="ancestors"> + <div class="ancestors"> <span class="filtertype">Implicitly<br/> </span> <ol id="implicits"> { @@ -167,7 +167,7 @@ class Template(universe: doc.Universe, generator: DiagramGenerator, tpl: DocTemp </div> else NodeSeq.Empty } ++ - <div id="ancestors"> + <div class="ancestors"> <span class="filtertype"></span> <ol> <li class="hideall out"><span>Hide All</span></li> @@ -201,28 +201,28 @@ class Template(universe: doc.Universe, generator: DiagramGenerator, tpl: DocTemp } { if (absValueMembers.isEmpty) NodeSeq.Empty else - <div id="values" class="values members"> + <div class="values members"> <h3>Abstract Value Members</h3> <ol>{ absValueMembers map (memberToHtml(_, tpl)) }</ol> </div> } { if (concValueMembers.isEmpty) NodeSeq.Empty else - <div id="values" class="values members"> + <div class="values members"> <h3>{ if (absValueMembers.isEmpty) "Value Members" else "Concrete Value Members" }</h3> <ol>{ concValueMembers map (memberToHtml(_, tpl)) }</ol> </div> } { if (shadowedImplicitMembers.isEmpty) NodeSeq.Empty else - <div id="values" class="values members"> + <div class="values members"> <h3>Shadowed Implicit Value Members</h3> <ol>{ shadowedImplicitMembers map (memberToHtml(_, tpl)) }</ol> </div> } { if (deprValueMembers.isEmpty) NodeSeq.Empty else - <div id="values" class="values members"> + <div class="values members"> <h3>Deprecated Value Members</h3> <ol>{ deprValueMembers map (memberToHtml(_, tpl)) }</ol> </div> @@ -287,13 +287,19 @@ class Template(universe: doc.Universe, generator: DiagramGenerator, tpl: DocTemp } def memberToHtml(mbr: MemberEntity, inTpl: DocTemplateEntity): NodeSeq = { + // Sometimes it's same, do we need signatureCompat still? + val sig = if (mbr.signature == mbr.signatureCompat) { + <a id={ mbr.signature }/> + } else { + <a id={ mbr.signature }/><a id={ mbr.signatureCompat }/> + } + val memberComment = memberToCommentHtml(mbr, inTpl, isSelf = false) <li name={ mbr.definitionName } visbl={ if (mbr.visibility.isProtected) "prt" else "pub" } data-isabs={ mbr.isAbstract.toString } fullComment={ if(memberComment.filter(_.label=="div").isEmpty) "no" else "yes" } group={ mbr.group }> - <a id={ mbr.signature }/> - <a id={ mbr.signatureCompat }/> + { sig } { signature(mbr, isSelf = false) } { memberComment } </li> diff --git a/src/scaladoc/scala/tools/nsc/doc/html/page/diagram/DotDiagramGenerator.scala b/src/scaladoc/scala/tools/nsc/doc/html/page/diagram/DotDiagramGenerator.scala index 4ff436bdc6..dc823ab1e5 100644 --- a/src/scaladoc/scala/tools/nsc/doc/html/page/diagram/DotDiagramGenerator.scala +++ b/src/scaladoc/scala/tools/nsc/doc/html/page/diagram/DotDiagramGenerator.scala @@ -364,7 +364,7 @@ class DotDiagramGenerator(settings: doc.Settings) extends DiagramGenerator { // add an id and class attribute to the SVG element case Elem(prefix, "svg", attribs, scope, child @ _*) => { val klass = if (isInheritanceDiagram) "class-diagram" else "package-diagram" - Elem(prefix, "svg", attribs, scope, child map(x => transform(x)) : _*) % + Elem(prefix, "svg", attribs, scope, true, child map(x => transform(x)) : _*) % new UnprefixedAttribute("id", "graph" + counter, Null) % new UnprefixedAttribute("class", klass, Null) } @@ -378,7 +378,7 @@ class DotDiagramGenerator(settings: doc.Settings) extends DiagramGenerator { // assign id and class attributes to edges and nodes: // the id attribute generated by dot has the format: "{class}|{id}" case g @ Elem(prefix, "g", attribs, scope, children @ _*) if (List("edge", "node").contains((g \ "@class").toString)) => { - var res = new Elem(prefix, "g", attribs, scope, (children map(x => transform(x))): _*) + var res = new Elem(prefix, "g", attribs, scope, true, (children map(x => transform(x))): _*) val dotId = (g \ "@id").toString if (dotId.count(_ == '|') == 1) { val Array(klass, id) = dotId.toString.split("\\|") @@ -395,11 +395,11 @@ class DotDiagramGenerator(settings: doc.Settings) extends DiagramGenerator { val imageNode = <image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href={ ("./lib/" + kind + "_diagram.png") } width="16px" height="16px" preserveAspectRatio="xMinYMin meet" x={ xposition.get.toString } y={ yposition.get.toString }/> val anchorNode = (g \ "a") match { case Seq(Elem(prefix, "a", attribs, scope, children @ _*)) => - transform(new Elem(prefix, "a", attribs, scope, (children ++ imageNode): _*)) + transform(new Elem(prefix, "a", attribs, scope, true, (children ++ imageNode): _*)) case _ => g \ "a" } - res = new Elem(prefix, "g", attribs, scope, anchorNode: _*) + res = new Elem(prefix, "g", attribs, scope, true, anchorNode: _*) DiagramStats.addFixedImage() } } @@ -413,7 +413,7 @@ class DotDiagramGenerator(settings: doc.Settings) extends DiagramGenerator { scala.xml.Text("") // apply recursively case Elem(prefix, label, attribs, scope, child @ _*) => - Elem(prefix, label, attribs, scope, child map(x => transform(x)) : _*) + Elem(prefix, label, attribs, scope, true, child map(x => transform(x)) : _*) case x => x } diff --git a/src/scaladoc/scala/tools/nsc/doc/html/resource/lib/template.css b/src/scaladoc/scala/tools/nsc/doc/html/resource/lib/template.css index 35f66cd5df..6d94452f3a 100644 --- a/src/scaladoc/scala/tools/nsc/doc/html/resource/lib/template.css +++ b/src/scaladoc/scala/tools/nsc/doc/html/resource/lib/template.css @@ -217,7 +217,7 @@ dl.attributes > dd { height: 18px; } -#values ol li:last-child { +.values ol li:last-child { margin-bottom: 5px; } diff --git a/src/scaladoc/scala/tools/nsc/doc/html/resource/lib/template.js b/src/scaladoc/scala/tools/nsc/doc/html/resource/lib/template.js index 1ebcb67f04..5ef03848b2 100644 --- a/src/scaladoc/scala/tools/nsc/doc/html/resource/lib/template.js +++ b/src/scaladoc/scala/tools/nsc/doc/html/resource/lib/template.js @@ -147,19 +147,19 @@ $(document).ready(function(){ filter(); }); - $("#mbrsel > div[id=ancestors] > ol > li.hideall").click(function() { + $("#mbrsel > div.ancestors > ol > li.hideall").click(function() { $("#linearization li.in").removeClass("in").addClass("out"); $("#linearization li:first").removeClass("out").addClass("in"); $("#implicits li.in").removeClass("in").addClass("out"); - if ($(this).hasClass("out") && $("#mbrsel > div[id=ancestors] > ol > li.showall").hasClass("in")) { + if ($(this).hasClass("out") && $("#mbrsel > div.ancestors > ol > li.showall").hasClass("in")) { $(this).removeClass("out").addClass("in"); - $("#mbrsel > div[id=ancestors] > ol > li.showall").removeClass("in").addClass("out"); + $("#mbrsel > div.ancestors > ol > li.showall").removeClass("in").addClass("out"); } filter(); }) - $("#mbrsel > div[id=ancestors] > ol > li.showall").click(function() { + $("#mbrsel > div.ancestors > ol > li.showall").click(function() { var filteredLinearization = $("#linearization li.out").filter(function() { return ! isHiddenClass($(this).attr("name")); @@ -172,9 +172,9 @@ $(document).ready(function(){ }); filteredImplicits.removeClass("out").addClass("in"); - if ($(this).hasClass("out") && $("#mbrsel > div[id=ancestors] > ol > li.hideall").hasClass("in")) { + if ($(this).hasClass("out") && $("#mbrsel > div.ancestors > ol > li.hideall").hasClass("in")) { $(this).removeClass("out").addClass("in"); - $("#mbrsel > div[id=ancestors] > ol > li.hideall").removeClass("in").addClass("out"); + $("#mbrsel > div.ancestors > ol > li.hideall").removeClass("in").addClass("out"); } filter(); @@ -275,7 +275,7 @@ function orderAlpha() { $("#order > ol > li.group").removeClass("in").addClass("out"); $("#template > div.parent").hide(); $("#template > div.conversion").hide(); - $("#mbrsel > div[id=ancestors]").show(); + $("#mbrsel > div.ancestors").show(); filter(); }; @@ -285,7 +285,7 @@ function orderInherit() { $("#order > ol > li.group").removeClass("in").addClass("out"); $("#template > div.parent").show(); $("#template > div.conversion").show(); - $("#mbrsel > div[id=ancestors]").hide(); + $("#mbrsel > div.ancestors").hide(); filter(); }; @@ -295,7 +295,7 @@ function orderGroup() { $("#order > ol > li.inherit").removeClass("in").addClass("out"); $("#template > div.parent").hide(); $("#template > div.conversion").hide(); - $("#mbrsel > div[id=ancestors]").show(); + $("#mbrsel > div.ancestors").show(); filter(); }; @@ -350,7 +350,7 @@ function initInherit() { } }); - $("#values > ol > li").each(function(){ + $(".values > ol > li").each(function(){ var mbr = $(this); this.mbrText = mbr.find("> .fullcomment .cmt").text(); var qualName = mbr.attr("name"); diff --git a/src/scaladoc/scala/tools/nsc/doc/model/MemberLookup.scala b/src/scaladoc/scala/tools/nsc/doc/model/MemberLookup.scala index 64eb1adbea..20aaab29fc 100644 --- a/src/scaladoc/scala/tools/nsc/doc/model/MemberLookup.scala +++ b/src/scaladoc/scala/tools/nsc/doc/model/MemberLookup.scala @@ -40,7 +40,7 @@ trait MemberLookup extends base.MemberLookupBase { override def findExternalLink(sym: Symbol, name: String): Option[LinkToExternal] = { val sym1 = if (sym == AnyClass || sym == AnyRefClass || sym == AnyValClass || sym == NothingClass) ListClass - else if (sym.isPackage) + else if (sym.hasPackageFlag) /* Get package object which has associatedFile ne null */ sym.info.member(newTermName("package")) else sym diff --git a/src/scaladoc/scala/tools/nsc/doc/model/ModelFactory.scala b/src/scaladoc/scala/tools/nsc/doc/model/ModelFactory.scala index ef84ac42ba..2993c4c4b9 100644 --- a/src/scaladoc/scala/tools/nsc/doc/model/ModelFactory.scala +++ b/src/scaladoc/scala/tools/nsc/doc/model/ModelFactory.scala @@ -89,10 +89,10 @@ class ModelFactory(val global: Global, val settings: doc.Settings) { trait TemplateImpl extends EntityImpl with TemplateEntity { override def qualifiedName: String = if (inTemplate == null || inTemplate.isRootPackage) name else optimize(inTemplate.qualifiedName + "." + name) - def isPackage = sym.isPackage + def isPackage = sym.hasPackageFlag def isTrait = sym.isTrait def isClass = sym.isClass && !sym.isTrait - def isObject = sym.isModule && !sym.isPackage + def isObject = sym.isModule && !sym.hasPackageFlag def isCaseClass = sym.isCaseClass def isRootPackage = false def selfType = if (sym.thisSym eq sym) None else Some(makeType(sym.thisSym.typeOfThis, this)) @@ -250,7 +250,7 @@ class ModelFactory(val global: Global, val settings: doc.Settings) { def valueParams: List[List[ValueParam]] = Nil /** TODO, these are now only computed for DocTemplates */ def parentTypes = - if (sym.isPackage || sym == AnyClass) List() else { + if (sym.hasPackageFlag || sym == AnyClass) List() else { val tps = (this match { case a: AliasType => sym.tpe.dealias.parents case a: AbstractType => sym.info.bounds match { @@ -661,7 +661,7 @@ class ModelFactory(val global: Global, val settings: doc.Settings) { s != EmptyPackage && s != RootPackage } }) - else if (bSym.isPackage) // (2) + else if (bSym.hasPackageFlag) // (2) if (settings.skipPackage(makeQualifiedName(bSym))) None else @@ -772,7 +772,7 @@ class ModelFactory(val global: Global, val settings: doc.Settings) { Some(new MemberTemplateImpl(bSym, inTpl) with AliasImpl with AliasType { override def isAliasType = true }) - else if (!modelFinished && (bSym.isPackage || templateShouldDocument(bSym, inTpl))) + else if (!modelFinished && (bSym.hasPackageFlag || templateShouldDocument(bSym, inTpl))) modelCreation.createTemplate(bSym, inTpl) else None diff --git a/src/scaladoc/scala/tools/nsc/doc/model/ModelFactoryTypeSupport.scala b/src/scaladoc/scala/tools/nsc/doc/model/ModelFactoryTypeSupport.scala index 2b7e2506d4..ea72fa6095 100644 --- a/src/scaladoc/scala/tools/nsc/doc/model/ModelFactoryTypeSupport.scala +++ b/src/scaladoc/scala/tools/nsc/doc/model/ModelFactoryTypeSupport.scala @@ -94,7 +94,7 @@ trait ModelFactoryTypeSupport { LinkToMember(bMbr, oTpl) case _ => val name = makeQualifiedName(bSym) - if (!bSym.owner.isPackage) + if (!bSym.owner.hasPackageFlag) Tooltip(name) else findExternalLink(bSym, name).getOrElse ( diff --git a/src/scaladoc/scala/tools/nsc/doc/model/TreeFactory.scala b/src/scaladoc/scala/tools/nsc/doc/model/TreeFactory.scala index 86a7a67160..c1228e8735 100755 --- a/src/scaladoc/scala/tools/nsc/doc/model/TreeFactory.scala +++ b/src/scaladoc/scala/tools/nsc/doc/model/TreeFactory.scala @@ -49,7 +49,7 @@ trait TreeFactory { thisTreeFactory: ModelFactory with TreeFactory => case _ => } else if (asym.isTerm && asym.owner.isClass){ - if (asym.isSetter) asym = asym.getter(asym.owner) + if (asym.isSetter) asym = asym.getterIn(asym.owner) makeTemplate(asym.owner) match { case docTmpl: DocTemplateImpl => val mbrs: Option[MemberImpl] = findMember(asym, docTmpl) diff --git a/src/scaladoc/scala/tools/nsc/doc/model/diagram/DiagramDirectiveParser.scala b/src/scaladoc/scala/tools/nsc/doc/model/diagram/DiagramDirectiveParser.scala index 44d8886e4e..b300752a34 100644 --- a/src/scaladoc/scala/tools/nsc/doc/model/diagram/DiagramDirectiveParser.scala +++ b/src/scaladoc/scala/tools/nsc/doc/model/diagram/DiagramDirectiveParser.scala @@ -177,7 +177,7 @@ trait DiagramDirectiveParser { def warning(message: String) = { // we need the position from the package object (well, ideally its comment, but yeah ...) - val sym = if (template.sym.isPackage) template.sym.info.member(global.nme.PACKAGE) else template.sym + val sym = if (template.sym.hasPackageFlag) template.sym.packageObject else template.sym assert((sym != global.NoSymbol) || (sym == global.rootMirror.RootPackage)) global.reporter.warning(sym.pos, message) } diff --git a/test/files/jvm/future-spec.check b/test/files/jvm/future-spec.check index df1629dd7e..5c80aa5586 100644 --- a/test/files/jvm/future-spec.check +++ b/test/files/jvm/future-spec.check @@ -1 +1 @@ -warning: there was one deprecation warning; re-run with -deprecation for details +warning: there were 21 deprecation warnings; re-run with -deprecation for details diff --git a/test/files/jvm/future-spec/FutureTests.scala b/test/files/jvm/future-spec/FutureTests.scala index a290af9cd3..6b34d5bfaa 100644 --- a/test/files/jvm/future-spec/FutureTests.scala +++ b/test/files/jvm/future-spec/FutureTests.scala @@ -17,6 +17,19 @@ class FutureTests extends MinimalScalaTest { case "NoReply" => Promise[String]().future } + def fail(msg: String): Nothing = throw new AssertionError(msg) + + def ECNotUsed[T](f: ExecutionContext => T): T = { + val p = Promise[Runnable]() + val unusedEC: ExecutionContext = new ExecutionContext { + def execute(r: Runnable) = p.success(r) + def reportFailure(t: Throwable): Unit = p.failure(t) + } + val t = f(unusedEC) + assert(p.future.value == None, "Future executed logic!") + t + } + val defaultTimeout = 5 seconds /* future specification */ @@ -68,6 +81,60 @@ class FutureTests extends MinimalScalaTest { } } + "Futures" should { + "have proper toString representations" in { + import ExecutionContext.Implicits.global + val s = 5 + val f = new Exception("foo") + val t = Try(throw f) + + val expectFailureString = "Future(Failure("+f+"))" + val expectSuccessString = "Future(Success(5))" + val expectNotCompleteString = "Future(<not completed>)" + + Future.successful(s).toString mustBe expectSuccessString + Future.failed(f).toString mustBe expectFailureString + Future.fromTry(t).toString mustBe expectFailureString + val p = Promise[Int]() + p.toString mustBe expectNotCompleteString + Promise[Int]().success(s).toString mustBe expectSuccessString + Promise[Int]().failure(f).toString mustBe expectFailureString + Await.ready(Future { throw f }, 2000 millis).toString mustBe expectFailureString + Await.ready(Future { s }, 2000 millis).toString mustBe expectSuccessString + + Future.never.toString mustBe "Future(<never>)" + Future.unit.toString mustBe "Future(Success(()))" + } + + "have proper const representation for success" in { + val s = "foo" + val f = Future.successful(s) + + ECNotUsed(ec => f.onFailure({ case _ => fail("onFailure should not have been called") })(ec)) + assert( ECNotUsed(ec => f.recover({ case _ => fail("recover should not have been called")})(ec)) eq f) + assert( ECNotUsed(ec => f.recoverWith({ case _ => fail("flatMap should not have been called")})(ec)) eq f) + assert(f.fallbackTo(f) eq f, "Future.fallbackTo must be the same instance as Future.fallbackTo") + } + + "have proper const representation for failure" in { + val e = new Exception("foo") + val f = Future.failed[Future[String]](e) + + assert(f.mapTo[String] eq f, "Future.mapTo must be the same instance as Future.mapTo") + assert(f.zip(f) eq f, "Future.zip must be the same instance as Future.zip") + assert(f.flatten eq f, "Future.flatten must be the same instance as Future.flatten") + assert(f.failed eq f, "Future.failed must be the same instance as Future.failed") + + ECNotUsed(ec => f.foreach(_ => fail("foreach should not have been called"))(ec)) + ECNotUsed(ec => f.onSuccess({ case _ => fail("onSuccess should not have been called") })(ec)) + assert( ECNotUsed(ec => f.map(_ => fail("map should not have been called"))(ec)) eq f) + assert( ECNotUsed(ec => f.flatMap(_ => fail("flatMap should not have been called"))(ec)) eq f) + assert( ECNotUsed(ec => f.filter(_ => fail("filter should not have been called"))(ec)) eq f) + assert( ECNotUsed(ec => f.collect({ case _ => fail("collect should not have been called")})(ec)) eq f) + assert( ECNotUsed(ec => f.zipWith(f)({ (_,_) => fail("zipWith should not have been called")})(ec)) eq f) + } + } + "The Future companion object" should { "call ExecutionContext.prepare on apply" in { val p = Promise[Boolean]() @@ -85,6 +152,49 @@ class FutureTests extends MinimalScalaTest { Await.result(f, defaultTimeout) mustBe ("foo") Await.result(p.future, defaultTimeout) mustBe (true) } + + "have a unit member representing an already completed Future containing Unit" in { + assert(Future.unit ne null, "Future.unit must not be null") + assert(Future.unit eq Future.unit, "Future.unit must be the same instance as Future.unit") + assert(Future.unit.isCompleted, "Future.unit must already be completed") + assert(Future.unit.value.get == Success(()), "Future.unit must contain a Success(())") + } + + "have a never member representing a never completed Future of Nothing" in { + + val test: Future[Nothing] = Future.never + + //Verify stable identifier + test match { + case Future.`never` => + case _ => fail("Future.never did not match Future.`never`") + } + + assert(test eq Future.never, "Future.never must be the same instance as Future.never") + assert(test ne null, "Future.never must not be null") + assert(!test.isCompleted && test.value.isEmpty, "Future.never must never be completed") + assert(test.failed eq test) + assert(test.asInstanceOf[Future[Future[Nothing]]].flatten eq test) + assert(test.zip(test) eq test) + assert(test.fallbackTo(test) eq test) + assert(test.mapTo[String] eq test) + + ECNotUsed(ec => test.foreach(_ => fail("foreach should not have been called"))(ec)) + ECNotUsed(ec => test.onSuccess({ case _ => fail("onSuccess should not have been called") })(ec)) + ECNotUsed(ec => test.onFailure({ case _ => fail("onFailure should not have been called") })(ec)) + ECNotUsed(ec => test.onComplete({ case _ => fail("onComplete should not have been called") })(ec)) + ECNotUsed(ec => test.transform(identity, identity)(ec) eq test) + ECNotUsed(ec => test.transform(identity)(ec) eq test) + ECNotUsed(ec => test.transformWith(_ => fail("transformWith should not have been called"))(ec) eq test) + ECNotUsed(ec => test.map(identity)(ec) eq test) + ECNotUsed(ec => test.flatMap(_ => fail("flatMap should not have been called"))(ec) eq test) + ECNotUsed(ec => test.filter(_ => fail("filter should not have been called"))(ec) eq test) + ECNotUsed(ec => test.collect({ case _ => fail("collect should not have been called")})(ec) eq test) + ECNotUsed(ec => test.recover({ case _ => fail("recover should not have been called")})(ec) eq test) + ECNotUsed(ec => test.recoverWith({ case _ => fail("recoverWith should not have been called")})(ec) eq test) + ECNotUsed(ec => test.andThen({ case _ => fail("andThen should not have been called")})(ec) eq test) + ECNotUsed(ec => test.zipWith(test)({ (_,_) => fail("zipWith should not have been called")})(ec) eq test) + } } "The default ExecutionContext" should { @@ -218,6 +328,142 @@ class FutureTests extends MinimalScalaTest { } mustBe (r) } + "transform results to results" in { + val f1 = Future.successful("foo").transform(_.map(_.toUpperCase)) + val f2 = Future("bar").transform(_.map(_.toUpperCase)) + Await.result(f1, defaultTimeout) mustBe "FOO" + Await.result(f2, defaultTimeout) mustBe "BAR" + } + + "transform failures to failures" in { + val initial = new Exception("Initial") + val expected1 = new Exception("Expected1") + val expected2 = new Exception("Expected2") + val f1 = Future(throw initial) transform { + case Failure(`initial`) => Failure(expected1) + case x => x + } + val f2 = Future.failed(initial) transform { + case Failure(`initial`) => Failure(expected2) + case x => x + } + + intercept[Exception] { Await.result(f1, defaultTimeout) } mustBe expected1 + intercept[Exception] { Await.result(f2, defaultTimeout) } mustBe expected2 + } + + "transform failures to results" in { + val initial1 = new Exception("Initial1") + val initial2 = new Exception("Initial2") + val f1 = Future.failed[String](initial1) transform { + case Failure(`initial1`) => Success("foo") + case x => x + } + val f2 = Future[String](throw initial2) transform { + case Failure(`initial2`) => Success("bar") + case x => x + } + Await.result(f1, defaultTimeout) mustBe "foo" + Await.result(f2, defaultTimeout) mustBe "bar" + } + + "transform results to failures" in { + val expected1 = new Exception("Expected1") + val expected2 = new Exception("Expected2") + val expected3 = new Exception("Expected3") + val f1 = Future.successful("foo") transform { + case Success("foo") => Failure(expected1) + case x => x + } + val f2 = Future("bar") transform { + case Success("bar") => Failure(expected2) + case x => x + } + val f3 = Future("bar") transform { + case Success("bar") => throw expected3 + case x => x + } + intercept[Exception] { Await.result(f1, defaultTimeout) } mustBe expected1 + intercept[Exception] { Await.result(f2, defaultTimeout) } mustBe expected2 + intercept[Exception] { Await.result(f3, defaultTimeout) } mustBe expected3 + } + + "transformWith results" in { + val f1 = Future.successful("foo").transformWith { + case Success(r) => Future(r.toUpperCase) + case f @ Failure(_) => Future.fromTry(f) + } + val f2 = Future("bar").transformWith { + case Success(r) => Future(r.toUpperCase) + case f @ Failure(_) => Future.fromTry(f) + } + Await.result(f1, defaultTimeout) mustBe "FOO" + Await.result(f2, defaultTimeout) mustBe "BAR" + } + + "transformWith failures" in { + val initial = new Exception("Initial") + val expected1 = new Exception("Expected1") + val expected2 = new Exception("Expected2") + val expected3 = new Exception("Expected3") + + val f1 = Future[Int](throw initial).transformWith { + case Failure(`initial`) => Future failed expected1 + case x => Future fromTry x + } + val f2 = Future.failed[Int](initial).transformWith { + case Failure(`initial`) => Future failed expected2 + case x => Future fromTry x + } + val f3 = Future[Int](throw initial).transformWith { + case Failure(`initial`) => throw expected3 + case x => Future fromTry x + } + + intercept[Exception] { Await.result(f1, defaultTimeout) } mustBe expected1 + intercept[Exception] { Await.result(f2, defaultTimeout) } mustBe expected2 + intercept[Exception] { Await.result(f3, defaultTimeout) } mustBe expected3 + } + + "transformWith failures to future success" in { + val initial = new Exception("Initial") + val f1 = Future.failed[String](initial).transformWith { + case Failure(`initial`) => Future("FOO") + case _ => Future failed initial + } + val f2 = Future[String](throw initial).transformWith { + case Failure(`initial`) => Future("BAR") + case _ => Future failed initial + } + Await.result(f1, defaultTimeout) mustBe "FOO" + Await.result(f2, defaultTimeout) mustBe "BAR" + } + + "transformWith results to future failures" in { + val initial = new Exception("Initial") + val expected1 = new Exception("Expected1") + val expected2 = new Exception("Expected2") + val expected3 = new Exception("Expected3") + + val f1 = Future[String]("FOO") transformWith { + case Success("FOO") => Future failed expected1 + case _ => Future successful "FOO" + } + val f2 = Future.successful("FOO") transformWith { + case Success("FOO") => Future failed expected2 + case _ => Future successful "FOO" + } + val f3 = Future.successful("FOO") transformWith { + case Success("FOO") => throw expected3 + case _ => Future successful "FOO" + } + + + intercept[Exception] { Await.result(f1, defaultTimeout) } mustBe expected1 + intercept[Exception] { Await.result(f2, defaultTimeout) } mustBe expected2 + intercept[Exception] { Await.result(f3, defaultTimeout) } mustBe expected3 + } + "andThen like a boss" in { val q = new java.util.concurrent.LinkedBlockingQueue[Int] for (i <- 1 to 1000) { @@ -281,6 +527,33 @@ class FutureTests extends MinimalScalaTest { Await.result(successful, timeout) mustBe (("foo", "foo")) } + "zipWith" in { + val timeout = 10000 millis + val f = new IllegalStateException("test") + intercept[IllegalStateException] { + val failed = Future.failed[String](f).zipWith(Future.successful("foo")) { _ -> _ } + Await.result(failed, timeout) + } mustBe (f) + + intercept[IllegalStateException] { + val failed = Future.successful("foo").zipWith(Future.failed[String](f)) { _ -> _ } + Await.result(failed, timeout) + } mustBe (f) + + intercept[IllegalStateException] { + val failed = Future.failed[String](f).zipWith(Future.failed[String](f)) { _ -> _ } + Await.result(failed, timeout) + } mustBe (f) + + val successful = Future.successful("foo").zipWith(Future.successful("foo")) { _ -> _ } + Await.result(successful, timeout) mustBe (("foo", "foo")) + + val failure = Future.successful("foo").zipWith(Future.successful("foo")) { (_,_) => throw f } + intercept[IllegalStateException] { + Await.result(failure, timeout) + } mustBe (f) + } + "fold" in { val timeout = 10000 millis def async(add: Int, wait: Int) = Future { diff --git a/test/files/jvm/scala-concurrent-tck.check b/test/files/jvm/scala-concurrent-tck.check new file mode 100644 index 0000000000..bbe73c9982 --- /dev/null +++ b/test/files/jvm/scala-concurrent-tck.check @@ -0,0 +1 @@ +warning: there were 74 deprecation warnings; re-run with -deprecation for details diff --git a/test/files/jvm/scala-concurrent-tck.scala b/test/files/jvm/scala-concurrent-tck.scala index ce86d4aef0..ba405e97bd 100644 --- a/test/files/jvm/scala-concurrent-tck.scala +++ b/test/files/jvm/scala-concurrent-tck.scala @@ -165,6 +165,100 @@ def testTransformFailure(): Unit = once { g onFailure { case e => done(e eq transformed) } } + def testTransformResultToResult(): Unit = once { + done => + Future("foo").transform { + case Success(s) => Success(s.toUpperCase) + case Failure(f) => throw new Exception("test failed") + } onComplete { + case Success("FOO") => done(true) + case _ => done(false) + } + } + + def testTransformResultToFailure(): Unit = once { + done => + val e = new Exception("expected") + Future("foo").transform { + case Success(s) => Failure(e) + case Failure(f) => throw new Exception("test failed") + } onComplete { + case Failure(`e`) => done(true) + case _ => done(false) + } + } + + def testTransformFailureToResult(): Unit = once { + done => + val e = "foo" + Future(throw new Exception("initial")).transform { + case Success(s) => throw new Exception("test failed") + case Failure(f) => Success(e) + } onComplete { + case Success(`e`) => done(true) + case _ => done(false) + } + } + + def testTransformFailureToFailure(): Unit = once { + done => + val e = new Exception("expected") + Future(throw new Exception("initial")).transform { + case Success(s) => throw new Exception("test failed") + case Failure(f) => Failure(e) + } onComplete { + case Failure(`e`) => done(true) + case _ => done(false) + } + } + + def testTransformWithResultToResult(): Unit = once { + done => + Future("foo").transformWith { + case Success(s) => Future(s.toUpperCase) + case Failure(f) => throw new Exception("test failed") + } onComplete { + case Success("FOO") => done(true) + case _ => done(false) + } + } + + def testTransformWithResultToFailure(): Unit = once { + done => + val e = new Exception("expected") + Future("foo").transformWith { + case Success(s) => Future(throw e) + case Failure(f) => throw new Exception("test failed") + } onComplete { + case Failure(`e`) => done(true) + case _ => done(false) + } + } + + def testTransformWithFailureToResult(): Unit = once { + done => + val e = "foo" + Future(throw new Exception("initial")).transformWith { + case Success(s) => throw new Exception("test failed") + case Failure(f) => Future(e) + } onComplete { + case Success(`e`) => done(true) + case _ => done(false) + } + } + + def testTransformWithFailureToFailure(): Unit = once { + done => + val e = new Exception("expected") + Future(throw new Exception("initial")).transformWith { + case Success(s) => throw new Exception("test failed") + case Failure(f) => Future(throw e) + } onComplete { + case Failure(`e`) => done(true) + case _ => done(false) + } + } + def testFoldFailure(): Unit = once { done => val f = Future[Unit] { throw new Exception("expected") } @@ -352,6 +446,14 @@ def testTransformFailure(): Unit = once { h onFailure { case e => done(e eq cause) } } + def testFallbackToThis(): Unit = { + def check(f: Future[Int]) = assert((f fallbackTo f) eq f) + + check(Future { 1 }) + check(Future.successful(1)) + check(Future.failed[Int](new Exception)) + } + testMapSuccess() testMapFailure() testFlatMapSuccess() @@ -373,6 +475,16 @@ def testTransformFailure(): Unit = once { testFallbackToFailure() testTransformSuccess() testTransformSuccessPF() + testTransformFailure() + testTransformFailurePF() + testTransformResultToResult() + testTransformResultToFailure() + testTransformFailureToResult() + testTransformFailureToFailure() + testTransformWithResultToResult() + testTransformWithResultToFailure() + testTransformWithFailureToResult() + testTransformWithFailureToFailure() } @@ -593,6 +705,17 @@ trait Exceptions extends TestBase { } +trait GlobalExecutionContext extends TestBase { + def testNameOfGlobalECThreads(): Unit = once { + done => Future({ + val expectedName = "scala-execution-context-global-"+ Thread.currentThread.getId + done(expectedName == Thread.currentThread.getName) + })(ExecutionContext.global) + } + + testNameOfGlobalECThreads() +} + trait CustomExecutionContext extends TestBase { import scala.concurrent.{ ExecutionContext, Awaitable } @@ -772,6 +895,7 @@ with FutureProjections with Promises with BlockContexts with Exceptions +with GlobalExecutionContext with CustomExecutionContext with ExecutionContextPrepare { diff --git a/test/files/jvm/t7146.scala b/test/files/jvm/t7146.scala index aaa3dc7ca4..ea734472d5 100644 --- a/test/files/jvm/t7146.scala +++ b/test/files/jvm/t7146.scala @@ -10,7 +10,7 @@ object Test { ExecutionContext.global.toString.startsWith("scala.concurrent.impl.ExecutionContextImpl")) val i = ExecutionContext.global.asInstanceOf[{ def executor: Executor }] println("should be scala.concurrent.forkjoin.ForkJoinPool == " + - i.executor.toString.startsWith("scala.concurrent.forkjoin.ForkJoinPool")) + (i.executor.getClass.getSuperclass.getName == "scala.concurrent.forkjoin.ForkJoinPool")) val u = i.executor. asInstanceOf[{ def getUncaughtExceptionHandler: Thread.UncaughtExceptionHandler }]. getUncaughtExceptionHandler diff --git a/test/files/jvm/t8582.check b/test/files/jvm/t8582.check index 564f482ff8..1d19f1d6a8 100644 --- a/test/files/jvm/t8582.check +++ b/test/files/jvm/t8582.check @@ -1,3 +1,6 @@ +t8582.scala:17: warning: class BeanInfo in package beans is deprecated: the generation of BeanInfo classes is no longer supported + class C1 + ^ getClass on module gives module class class p1.p2.Singleton$Singleton$ diff --git a/test/files/jvm/t8582.flags b/test/files/jvm/t8582.flags new file mode 100644 index 0000000000..dcc59ebe32 --- /dev/null +++ b/test/files/jvm/t8582.flags @@ -0,0 +1 @@ +-deprecation diff --git a/test/files/neg/beanInfoDeprecation.check b/test/files/neg/beanInfoDeprecation.check new file mode 100644 index 0000000000..788b277818 --- /dev/null +++ b/test/files/neg/beanInfoDeprecation.check @@ -0,0 +1,6 @@ +beanInfoDeprecation.scala:2: warning: class BeanInfo in package beans is deprecated: the generation of BeanInfo classes is no longer supported +class C + ^ +error: No warnings can be incurred under -Xfatal-warnings. +one warning found +one error found diff --git a/test/files/neg/beanInfoDeprecation.flags b/test/files/neg/beanInfoDeprecation.flags new file mode 100644 index 0000000000..c6bfaf1f64 --- /dev/null +++ b/test/files/neg/beanInfoDeprecation.flags @@ -0,0 +1 @@ +-deprecation -Xfatal-warnings diff --git a/test/files/neg/beanInfoDeprecation.scala b/test/files/neg/beanInfoDeprecation.scala new file mode 100644 index 0000000000..c7e3a86202 --- /dev/null +++ b/test/files/neg/beanInfoDeprecation.scala @@ -0,0 +1,2 @@ +@scala.beans.BeanInfo +class C diff --git a/test/files/neg/t8764.check b/test/files/neg/t8764.check deleted file mode 100644 index 6d89ebe106..0000000000 --- a/test/files/neg/t8764.check +++ /dev/null @@ -1,6 +0,0 @@ -t8764.scala:8: error: type mismatch; - found : AnyVal - required: Double - val d: Double = a.productElement(0) - ^ -one error found diff --git a/test/files/neg/t8764.flags b/test/files/neg/t8764.flags deleted file mode 100644 index 48fd867160..0000000000 --- a/test/files/neg/t8764.flags +++ /dev/null @@ -1 +0,0 @@ --Xexperimental diff --git a/test/files/neg/t8764.scala b/test/files/neg/t8764.scala deleted file mode 100644 index dc5bfb0160..0000000000 --- a/test/files/neg/t8764.scala +++ /dev/null @@ -1,9 +0,0 @@ -object Main { - - case class IntAndDouble(i: Int, d: Double) - - // a.productElement used to be Int => Double - // now: Int => AnyVal - val a = IntAndDouble(1, 5.0) - val d: Double = a.productElement(0) -} diff --git a/test/files/neg/t8849.check b/test/files/neg/t8849.check new file mode 100644 index 0000000000..15b00aee8b --- /dev/null +++ b/test/files/neg/t8849.check @@ -0,0 +1,7 @@ +t8849.scala:8: error: ambiguous implicit values: + both value global in object Implicits of type => scala.concurrent.ExecutionContext + and value dummy of type scala.concurrent.ExecutionContext + match expected type scala.concurrent.ExecutionContext + require(implicitly[ExecutionContext] eq dummy) + ^ +one error found diff --git a/test/files/neg/t8849.scala b/test/files/neg/t8849.scala new file mode 100644 index 0000000000..336f16b40f --- /dev/null +++ b/test/files/neg/t8849.scala @@ -0,0 +1,10 @@ +import scala.concurrent.ExecutionContext +import ExecutionContext.Implicits.global + +object Test { + def main(args: Array[String]): Unit = { + implicit val dummy: ExecutionContext = null + require(scala.concurrent.ExecutionContext.Implicits.global ne null) + require(implicitly[ExecutionContext] eq dummy) + } +}
\ No newline at end of file diff --git a/test/files/pos/alladin763.scala b/test/files/pos/alladin763.scala new file mode 100644 index 0000000000..29c9b25318 --- /dev/null +++ b/test/files/pos/alladin763.scala @@ -0,0 +1,37 @@ +// Test from http://lrytz.github.io/scala-aladdin-bugtracker/displayItem.do%3Fid=763.html +// and expanded with package object variants + + +trait Foo { type T; def apply() : T } +object e extends Foo { type T = Int; def apply() = 42 } + +package p { + trait T[X] { def O : { def apply(): X } } + object `package` extends T[Int] { + def O: { def apply(): Int } = new { def apply(): Int = 42 } + } + + object Test { + val x: Int = O() + } +} + +object Test { + + val f = new Foo { type T = Int; def apply() = 42 } + + def main(args: Array[String]): Unit = { + val g = new Foo { type T = Int; def apply() = 42 } + + (e: Foo)() + val ee: Int = e() + + (f: Foo)() + val ff: Int = f() + + (g: Foo)() + val gg: Int = g() + + val pp: Int = p.O() + } +} diff --git a/test/files/pos/t8462.scala b/test/files/pos/t8462.scala new file mode 100644 index 0000000000..6946cf8e5e --- /dev/null +++ b/test/files/pos/t8462.scala @@ -0,0 +1,11 @@ + +trait ConstantOps { + def exprs = ( + 1 << 2L : Int, // was: error: type mismatch; found : Long(4L) + 64 >> 2L : Int, // was: error: type mismatch; found : Long(4L) + 64 >>> 2L : Int, // was: error: type mismatch; found : Long(4L) + 'a' << 2L : Int, + 'a' >> 2L : Int, + 'a'>>> 2L : Int + ) +} diff --git a/test/files/pos/t8862a.scala b/test/files/pos/t8862a.scala new file mode 100644 index 0000000000..f9576707ba --- /dev/null +++ b/test/files/pos/t8862a.scala @@ -0,0 +1,47 @@ +package p { + + abstract class C[A] { + def x: A + implicit def oops: A = x + implicit def oopso: Option[A] = None + } + + package q { + + class Oops + + object `package` extends C[Oops] { + override def x = new Oops + } + + object Blah { + oops + oopso + + // implicits found in enclosing context + implicitly[Oops] + implicitly[Option[Oops]] + } + } +} + +package other { + + object Blah { + // implicits found through this import + import p.q._ + + oops + oopso + + implicitly[Oops] + implicitly[Option[Oops]] + } + + + object Blee { + // implicits found through the companion implicits + implicitly[p.q.Oops] + implicitly[Option[p.q.Oops]] + } +} diff --git a/test/files/pos/t8862b.scala b/test/files/pos/t8862b.scala new file mode 100644 index 0000000000..8be7fb5fab --- /dev/null +++ b/test/files/pos/t8862b.scala @@ -0,0 +1,12 @@ +package p { + trait T[X] { def O : { def apply(): X } } + object `package` extends T[Int] { + def O: { def apply(): Int } = new { def apply(): Int = 42 } + } + + object Test { + def main(args: Array[String]): Unit = { + val x: Int = O() + } + } +} diff --git a/test/files/run/future-flatmap-exec-count.check b/test/files/run/future-flatmap-exec-count.check index dd9dce64ed..7065c133e0 100644 --- a/test/files/run/future-flatmap-exec-count.check +++ b/test/files/run/future-flatmap-exec-count.check @@ -1,3 +1,4 @@ +warning: there was one deprecation warning; re-run with -deprecation for details mapping execute() flatmapping diff --git a/test/files/run/inline-ex-handlers.check b/test/files/run/inline-ex-handlers.check index 7c885d2cc9..27a277d314 100644 --- a/test/files/run/inline-ex-handlers.check +++ b/test/files/run/inline-ex-handlers.check @@ -123,12 +123,12 @@ 300 RETURN(UNIT) @@ -583,6 +603,6 @@ with finalizer: null -- catch (Throwable) in ArrayBuffer(7, 9, 10) starting at: 6 -+ catch (Throwable) in ArrayBuffer(7, 9, 10, 11) starting at: 6 +- catch (Throwable) in Vector(7, 9, 10) starting at: 6 ++ catch (Throwable) in Vector(7, 9, 10, 11) starting at: 6 consisting of blocks: List(6) with finalizer: null -- catch (Throwable) in ArrayBuffer(4, 6, 7, 9, 10) starting at: 3 -+ catch (Throwable) in ArrayBuffer(4, 6, 7, 9, 10, 11, 12) starting at: 3 +- catch (Throwable) in Vector(4, 6, 7, 9, 10) starting at: 3 ++ catch (Throwable) in Vector(4, 6, 7, 9, 10, 11, 12) starting at: 3 consisting of blocks: List(3) @@ -618,3 +638,3 @@ startBlock: 1 @@ -171,8 +171,8 @@ } @@ -690,3 +730,3 @@ with finalizer: null -- catch (<none>) in ArrayBuffer(4, 5, 6, 8) starting at: 3 -+ catch (<none>) in ArrayBuffer(4, 5, 6, 8, 10) starting at: 3 +- catch (<none>) in Vector(4, 5, 6, 8) starting at: 3 ++ catch (<none>) in Vector(4, 5, 6, 8, 10) starting at: 3 consisting of blocks: List(3) @@ -714,5 +754,5 @@ def main(args: Array[String] (ARRAY[REF(class String)])): Unit { @@ -276,12 +276,12 @@ } @@ -852,6 +918,6 @@ with finalizer: null -- catch (Throwable) in ArrayBuffer(13, 14, 15, 18, 20, 21, 23) starting at: 4 -+ catch (Throwable) in ArrayBuffer(13, 14, 15, 18, 20, 21, 23, 25) starting at: 4 +- catch (Throwable) in Vector(13, 14, 15, 18, 20, 21, 23) starting at: 4 ++ catch (Throwable) in Vector(13, 14, 15, 18, 20, 21, 23, 25) starting at: 4 consisting of blocks: List(9, 8, 6, 5, 4) with finalizer: null -- catch (<none>) in ArrayBuffer(4, 5, 6, 9, 13, 14, 15, 18, 20, 21, 23) starting at: 3 -+ catch (<none>) in ArrayBuffer(4, 5, 6, 9, 13, 14, 15, 18, 20, 21, 23, 25, 26) starting at: 3 +- catch (<none>) in Vector(4, 5, 6, 9, 13, 14, 15, 18, 20, 21, 23) starting at: 3 ++ catch (<none>) in Vector(4, 5, 6, 9, 13, 14, 15, 18, 20, 21, 23, 25, 26) starting at: 3 consisting of blocks: List(3) @@ -879,5 +945,5 @@ def main(args: Array[String] (ARRAY[REF(class String)])): Unit { @@ -317,8 +317,8 @@ 127 CALL_METHOD scala.Predef.println (dynamic) @@ -964,3 +1034,3 @@ with finalizer: null -- catch (IllegalArgumentException) in ArrayBuffer(6, 7, 8, 11, 13, 14, 16) starting at: 3 -+ catch (IllegalArgumentException) in ArrayBuffer(6, 7, 8, 11, 13, 14, 16, 17) starting at: 3 +- catch (IllegalArgumentException) in Vector(6, 7, 8, 11, 13, 14, 16) starting at: 3 ++ catch (IllegalArgumentException) in Vector(6, 7, 8, 11, 13, 14, 16, 17) starting at: 3 consisting of blocks: List(3) @@ -988,5 +1058,5 @@ def main(args: Array[String] (ARRAY[REF(class String)])): Unit { diff --git a/test/files/run/lub-visibility.check b/test/files/run/lub-visibility.check index 70734966f0..135cb3cb76 100644 --- a/test/files/run/lub-visibility.check +++ b/test/files/run/lub-visibility.check @@ -6,6 +6,6 @@ scala> // should infer List[scala.collection.immutable.Seq[Nothing]] scala> // but reverted that for SI-5534. scala> val x = List(List(), Vector()) -x: List[scala.collection.immutable.Seq[Nothing] with scala.collection.AbstractSeq[Nothing] with java.io.Serializable] = List(List(), Vector()) +x: List[scala.collection.immutable.Seq[Nothing] with scala.collection.AbstractSeq[Nothing] with Serializable] = List(List(), Vector()) scala> :quit diff --git a/test/files/run/t2251b.check b/test/files/run/t2251b.check index 4231fc6ea6..b60698d605 100644 --- a/test/files/run/t2251b.check +++ b/test/files/run/t2251b.check @@ -1,4 +1,4 @@ -TypeTag[List[scala.collection.immutable.LinearSeq[B[_ >: D with C <: B[_ >: D with C <: A]]] with scala.collection.AbstractSeq[B[_ >: D with C <: B[_ >: D with C <: A]]] with java.io.Serializable]] +TypeTag[List[scala.collection.immutable.LinearSeq[B[_ >: D with C <: B[_ >: D with C <: A]]] with scala.collection.AbstractSeq[B[_ >: D with C <: B[_ >: D with C <: A]]] with Serializable]] TypeTag[List[scala.collection.immutable.Iterable[B[_ >: F with E with D with C <: B[_ >: F with E with D with C <: A]]] with F with Int => Any]] TypeTag[List[scala.collection.immutable.Seq[B[_ >: D with C <: B[_ >: D with C <: A]]] with scala.collection.AbstractSeq[B[_ >: D with C <: B[_ >: D with C <: A]]] with Serializable]] TypeTag[List[scala.collection.Set[_ >: G with F <: B[_ >: G with F <: B[_ >: G with F <: A]]]]] @@ -6,6 +6,6 @@ TypeTag[List[scala.collection.Set[_ >: G with F <: B[_ >: G with F <: B[_ >: G w TypeTag[List[scala.collection.Set[_ >: G with F <: B[_ >: G with F <: B[_ >: G with F <: A]]]]] TypeTag[List[Seq[B[_ >: G with F <: B[_ >: G with F <: A]]]]] TypeTag[List[scala.collection.Map[_ >: F with C <: B[_ >: F with C <: B[_ >: F with C <: A]], B[_ >: G with D <: B[_ >: G with D <: A]]]]] -TypeTag[List[scala.collection.AbstractSeq[B[_ >: G with F <: B[_ >: G with F <: A]]] with scala.collection.LinearSeq[B[_ >: G with F <: B[_ >: G with F <: A]]] with java.io.Serializable]] +TypeTag[List[scala.collection.AbstractSeq[B[_ >: G with F <: B[_ >: G with F <: A]]] with scala.collection.LinearSeq[B[_ >: G with F <: B[_ >: G with F <: A]]] with Serializable]] TypeTag[List[Seq[B[_ >: G with F <: B[_ >: G with F <: A]]]]] TypeTag[List[Seq[B[_ >: G with F <: B[_ >: G with F <: A]]]]] diff --git a/test/files/run/t4332.scala b/test/files/run/t4332.scala index 5a67922911..1c7e7d73de 100644 --- a/test/files/run/t4332.scala +++ b/test/files/run/t4332.scala @@ -12,7 +12,7 @@ object Test extends DirectTest { } def isExempt(sym: Symbol) = { - val exempt = Set("view", "repr", "sliceWithKnownDelta", "sliceWithKnownBound", "transform") + val exempt = Set("view", "repr", "sliceWithKnownDelta", "sliceWithKnownBound", "transform", "filterImpl") (exempt contains sym.name.decoded) } diff --git a/test/files/run/t6827.check b/test/files/run/t6827.check index 3a3a71c67d..4889e05be8 100644 --- a/test/files/run/t6827.check +++ b/test/files/run/t6827.check @@ -1,6 +1,6 @@ -start at -5: java.lang.IllegalArgumentException: requirement failed: start -5 out of range 10 -start at -1: java.lang.IllegalArgumentException: requirement failed: start -1 out of range 10 -start at limit: java.lang.IllegalArgumentException: requirement failed: start 10 out of range 10 +start at -5: java.lang.ArrayIndexOutOfBoundsException: -5 +start at -1: java.lang.ArrayIndexOutOfBoundsException: -1 +start at limit: ok start at limit-1: ok first 10: ok read all: ok @@ -8,8 +8,8 @@ test huge len: ok 5 from 5: ok 20 from 5: ok test len overflow: ok -start beyond limit: java.lang.IllegalArgumentException: requirement failed: start 30 out of range 10 +start beyond limit: ok read 0: ok read -1: ok -invalid read 0: java.lang.IllegalArgumentException: requirement failed: start 30 out of range 10 -invalid read -1: java.lang.IllegalArgumentException: requirement failed: start 30 out of range 10 +invalid read 0: ok +invalid read -1: ok diff --git a/test/files/run/t6827.scala b/test/files/run/t6827.scala index 8e17af09e2..eb020711bb 100644 --- a/test/files/run/t6827.scala +++ b/test/files/run/t6827.scala @@ -31,4 +31,24 @@ object Test extends App { // okay, see SI-7128 "...".toIterator.copyToArray(new Array[Char](0), 0, 0) + + + // Bonus test from @som-snytt to check for overflow in + // index calculations. + def testOverflow(start: Int, len: Int, expected: List[Char]) { + def copyFromIterator = { + val arr = Array.fill[Char](3)('-') + "abc".toIterator.copyToArray(arr, start, len) + arr.toList + } + def copyFromArray = { + val arr = Array.fill[Char](3)('-') + "abc".toArray.copyToArray(arr, start, len) + arr.toList + } + assert(copyFromIterator == expected) + assert(copyFromArray == expected) + } + testOverflow(1, Int.MaxValue - 1, "-ab".toList) + testOverflow(1, Int.MaxValue, "-ab".toList) } diff --git a/test/files/run/t7521/Test.scala b/test/files/run/t7521/Test.scala new file mode 100644 index 0000000000..e9816ad6cb --- /dev/null +++ b/test/files/run/t7521/Test.scala @@ -0,0 +1,5 @@ +object Test { + def main(args: Array[String]): Unit = { + new Wrapper(new Array[Int](1)) + } +} diff --git a/test/files/run/t7521/Wrapper.scala b/test/files/run/t7521/Wrapper.scala new file mode 100644 index 0000000000..0b923f8924 --- /dev/null +++ b/test/files/run/t7521/Wrapper.scala @@ -0,0 +1 @@ +class Wrapper[Repr](val xs: Repr) extends AnyVal diff --git a/test/files/run/t7521b.check b/test/files/run/t7521b.check new file mode 100644 index 0000000000..4d96df106d --- /dev/null +++ b/test/files/run/t7521b.check @@ -0,0 +1,7 @@ += Java Erased Signatures = +public int C.a(Wrapper) +public int C.b(Wrapper) + += Java Generic Signatures = +public int C.a(Wrapper<int[]>) +public int C.b(Wrapper<java.lang.Object>) diff --git a/test/files/run/t7521b.scala b/test/files/run/t7521b.scala new file mode 100644 index 0000000000..c9e27f28b4 --- /dev/null +++ b/test/files/run/t7521b.scala @@ -0,0 +1,20 @@ +class Wrapper[X](x: X) + +class C { + def a(w: Wrapper[Array[Int]]) = 0 + def b(w: Wrapper[Int]) = 0 +} + +object Test { + def main(args: Array[String]): Unit = { + val c = new C + c.a(new Wrapper(Array(1, 2))) + c.b(new Wrapper(1)) + + val methods = classOf[C].getDeclaredMethods.sortBy(_.getName) + println("= Java Erased Signatures =") + println(methods.mkString("\n")) + println("\n= Java Generic Signatures =") + println(methods.map(_.toGenericString).mkString("\n")) + } +} diff --git a/test/files/run/t8575.scala b/test/files/run/t8575.scala new file mode 100644 index 0000000000..6e3e57f2be --- /dev/null +++ b/test/files/run/t8575.scala @@ -0,0 +1,33 @@ +class E[F] +class A +class B +class C + +trait TypeMember { + type X + + // This call throws an AbstractMethodError, because it invokes the erasure of + // consume(X): Unit that is consume(Object): Unit. But the corresponding + // bridge method is not generated. + consume(value) + + def value: X + def consume(x: X): Unit +} + +object Test extends TypeMember { + type F = A with B + + // works if replaced by type X = E[A with B with C] + type X = E[F with C] + + val value = new E[F with C] + + // This call passes, since it invokes consume(E): Unit + consume(value) + def consume(x: X) {} + + def main(args: Array[String]) { + + } +} diff --git a/test/files/run/t8575b.scala b/test/files/run/t8575b.scala new file mode 100644 index 0000000000..0d731ccf9f --- /dev/null +++ b/test/files/run/t8575b.scala @@ -0,0 +1,17 @@ +class A +class B +class C + +object Test { + type F = A with B + + def main(args: Array[String]) { + import reflect.runtime.universe._ + val t1 = typeOf[F with C] + val t2 = typeOf[(A with B) with C] + val t3 = typeOf[A with B with C] + assert(t1 =:= t2) + assert(t2 =:= t3) + assert(t3 =:= t1) + } +} diff --git a/test/files/run/t8575c.scala b/test/files/run/t8575c.scala new file mode 100644 index 0000000000..8219952299 --- /dev/null +++ b/test/files/run/t8575c.scala @@ -0,0 +1,23 @@ +class C + +trait TypeMember { + type X + type Y + type Z +} + +object Test extends TypeMember { + type A = X with Y + type B = Z with A + type F = A with B + + def main(args: Array[String]) { + import reflect.runtime.universe._ + val t1 = typeOf[F with C] + val t2 = typeOf[(A with B) with C] + val t3 = typeOf[A with B with C] + assert(t1 =:= t2) + assert(t2 =:= t3) + assert(t3 =:= t1) + } +} diff --git a/test/files/run/t8710.scala b/test/files/run/t8710.scala new file mode 100644 index 0000000000..15aab5b8a4 --- /dev/null +++ b/test/files/run/t8710.scala @@ -0,0 +1,17 @@ +class Bar(val x: Int) extends AnyVal { + def f: String = f(0) + private def f(x: Int): String = "" +} + +class Baz(val x: Int) extends AnyVal { + def f: String = "123" + private def f(x: Int): String = "" +} +object Baz { + def x(b: Baz) = b.f(0) +} + +object Test extends App { + new Bar(23).f + new Baz(23).f +} diff --git a/test/files/run/t8764.check b/test/files/run/t8764.check deleted file mode 100644 index 6260069602..0000000000 --- a/test/files/run/t8764.check +++ /dev/null @@ -1,5 +0,0 @@ -IntOnly: should return an unboxed int -Int: int -IntAndDouble: should just box and return Anyval -Double: class java.lang.Double -Int: class java.lang.Integer diff --git a/test/files/run/t8764.flags b/test/files/run/t8764.flags deleted file mode 100644 index 48fd867160..0000000000 --- a/test/files/run/t8764.flags +++ /dev/null @@ -1 +0,0 @@ --Xexperimental diff --git a/test/files/run/t8764.scala b/test/files/run/t8764.scala deleted file mode 100644 index decc658f6e..0000000000 --- a/test/files/run/t8764.scala +++ /dev/null @@ -1,16 +0,0 @@ -object Test extends App { -case class IntOnly(i: Int, j: Int) - -println("IntOnly: should return an unboxed int") -val a = IntOnly(1, 2) -val i: Int = a.productElement(0) -println(s"Int: ${a.productElement(0).getClass}") - -case class IntAndDouble(i: Int, d: Double) - -println("IntAndDouble: should just box and return Anyval") -val b = IntAndDouble(1, 2.0) -val j: AnyVal = b.productElement(0) -println(s"Double: ${b.productElement(1).getClass}") -println(s"Int: ${b.productElement(0).getClass}") -} diff --git a/test/files/run/t8944/A_1.scala b/test/files/run/t8944/A_1.scala new file mode 100644 index 0000000000..7ff80327b0 --- /dev/null +++ b/test/files/run/t8944/A_1.scala @@ -0,0 +1 @@ +case class A(private val x: String) diff --git a/test/files/run/t8944/A_2.scala b/test/files/run/t8944/A_2.scala new file mode 100644 index 0000000000..3dcdea1583 --- /dev/null +++ b/test/files/run/t8944/A_2.scala @@ -0,0 +1,6 @@ +case class Other(private val x: String) // consume a fresh name suffix + +// the param accessor will now be called "x$2", +// whereas the previously compiled client expects it to be called +// x$1 +case class A(private val x: String) diff --git a/test/files/run/t8944/Test_1.scala b/test/files/run/t8944/Test_1.scala new file mode 100644 index 0000000000..fe466693cf --- /dev/null +++ b/test/files/run/t8944/Test_1.scala @@ -0,0 +1,3 @@ +object Test extends App { + val A("") = new A("") +} diff --git a/test/files/run/t8944b.scala b/test/files/run/t8944b.scala new file mode 100644 index 0000000000..f469122ce6 --- /dev/null +++ b/test/files/run/t8944b.scala @@ -0,0 +1,9 @@ +case class A(private var foo: Any) { + def m = { def foo = 42 /*will be lamba lifted to `A#foo$1`*/ } +} +object Test { + def main(args: Array[String]): Unit = { + val A("") = new A("") + new A("").m + } +} diff --git a/test/files/run/t8944c.check b/test/files/run/t8944c.check new file mode 100644 index 0000000000..7738f76980 --- /dev/null +++ b/test/files/run/t8944c.check @@ -0,0 +1,5 @@ +private java.lang.Object Foo.ant() +public java.lang.Object Foo.ant$access$0() +private scala.collection.Seq Foo.cat() +public scala.collection.Seq Foo.cat$access$2() +public java.lang.Object Foo.elk() diff --git a/test/files/run/t8944c.scala b/test/files/run/t8944c.scala new file mode 100644 index 0000000000..95c2143851 --- /dev/null +++ b/test/files/run/t8944c.scala @@ -0,0 +1,8 @@ +case class Foo[A](private val ant: Any, elk: Any, private val cat: A*) + +object Test { + def main(args: Array[String]): Unit = { + def pred(name: String) = Set("ant", "elk", "cat").exists(name contains _) + println(classOf[Foo[_]].getDeclaredMethods.filter(m => pred(m.getName)).sortBy(_.getName).mkString("\n")) + } +} diff --git a/test/files/run/t8955.scala b/test/files/run/t8955.scala new file mode 100644 index 0000000000..afa31aa5d7 --- /dev/null +++ b/test/files/run/t8955.scala @@ -0,0 +1,12 @@ +import scala.collection.parallel.immutable.ParSet + +object Test { + def main(args: Array[String]): Unit = { + for (i <- 1 to 2000) test() + } + + def test() { + ParSet[Int]((1 to 10000): _*) foreach (x => ()) // hangs non deterministically + } +} + diff --git a/test/files/run/t9030.scala b/test/files/run/t9030.scala new file mode 100644 index 0000000000..48d24e5b54 --- /dev/null +++ b/test/files/run/t9030.scala @@ -0,0 +1,19 @@ +object Test extends App { + + // For these methods, the compiler emits calls to BoxesRuntime.equalsNumNum/equalsNumChar/equalsNumObject directly + + def numNum(a: java.lang.Number, b: java.lang.Number) = assert(a == b) + def numChar(a: java.lang.Number, b: java.lang.Character) = assert(a == b) + def numObject(a: java.lang.Number, b: java.lang.Object) = assert(a == b) + + // The compiler doesn't use equalsCharObject directly, but still adding an example for completeness + + def charObject(a: java.lang.Character, b: java.lang.Object) = assert(a == b) + + numNum(new Integer(1), new Integer(1)) + numChar(new Integer(97), new Character('a')) + numObject(new Integer(1), new Integer(1)) + numObject(new Integer(97), new Character('a')) + + charObject(new Character('a'), new Integer(97)) +} diff --git a/test/junit/scala/collection/SeqViewTest.scala b/test/junit/scala/collection/SeqViewTest.scala new file mode 100644 index 0000000000..24474fc4b9 --- /dev/null +++ b/test/junit/scala/collection/SeqViewTest.scala @@ -0,0 +1,16 @@ +package scala.collection + +import org.junit.runner.RunWith +import org.junit.runners.JUnit4 +import org.junit.Assert._ +import org.junit.Test + +@RunWith(classOf[JUnit4]) +class SeqViewTest { + + @Test + def test_SI8691() { + // Really just testing to make sure ++: doesn't throw an exception + assert( Seq(1,2) ++: Seq(3,4).view == Seq(1,2,3,4) ) + } +} diff --git a/test/junit/scala/collection/SetMapConsistencyTest.scala b/test/junit/scala/collection/SetMapConsistencyTest.scala index 261c11a98b..0749e61c09 100644 --- a/test/junit/scala/collection/SetMapConsistencyTest.scala +++ b/test/junit/scala/collection/SetMapConsistencyTest.scala @@ -529,4 +529,15 @@ class SetMapConsistencyTest { assert(nit == 4) assert(nfe == 4) } + + @Test + def test_SI8727() { + import scala.tools.testing.AssertUtil._ + type NSEE = NoSuchElementException + val map = Map(0 -> "zero", 1 -> "one") + val m = map.filterKeys(i => if (map contains i) true else throw new NSEE) + assert{ (m contains 0) && (m get 0).nonEmpty } + assertThrows[NSEE]{ m contains 2 } + assertThrows[NSEE]{ m get 2 } + } } diff --git a/test/junit/scala/collection/immutable/StreamTest.scala b/test/junit/scala/collection/immutable/StreamTest.scala new file mode 100644 index 0000000000..6dc1c79a48 --- /dev/null +++ b/test/junit/scala/collection/immutable/StreamTest.scala @@ -0,0 +1,18 @@ +package scala.collection.immutable + +import org.junit.runner.RunWith +import org.junit.runners.JUnit4 +import org.junit.Test +import org.junit.Assert._ + +@RunWith(classOf[JUnit4]) +class StreamTest { + + @Test + def t6727_and_t6440(): Unit = { + assertTrue(Stream.continually(()).filter(_ => true).take(2) == Seq((), ())) + assertTrue(Stream.continually(()).filterNot(_ => false).take(2) == Seq((), ())) + assertTrue(Stream(1,2,3,4,5).filter(_ < 4) == Seq(1,2,3)) + assertTrue(Stream(1,2,3,4,5).filterNot(_ > 4) == Seq(1,2,3,4)) + } +} diff --git a/test/junit/scala/sys/process/t7350.scala b/test/junit/scala/sys/process/t7350.scala new file mode 100644 index 0000000000..7f3e8897f2 --- /dev/null +++ b/test/junit/scala/sys/process/t7350.scala @@ -0,0 +1,298 @@ + +package scala.sys.process + +import org.junit.runner.RunWith +import org.junit.runners.JUnit4 +import org.junit.Test +import java.io.{InputStream, OutputStream, PipedInputStream, PipedOutputStream, ByteArrayInputStream, + ByteArrayOutputStream, IOException, Closeable} +import java.lang.reflect.InvocationTargetException +import scala.concurrent.{Await, Future} +import scala.concurrent.duration.{Duration, SECONDS} +import scala.concurrent.ExecutionContext.Implicits.global +import scala.util.control.Exception.ignoring + +// Each test normally ends in a moment, but for failure cases, waits until one second. + +@RunWith(classOf[JUnit4]) +class PipedProcessTest { + class ProcessMock(error: Boolean) extends Process { + var destroyCount = 0 + def exitValue(): Int = { + if (error) { + throw new InterruptedException() + } + 0 + } + def destroy(): Unit = { destroyCount += 1 } + } + + class ProcessBuilderMock(process: Process, error: Boolean) extends ProcessBuilder.AbstractBuilder { + override def run(io: ProcessIO): Process = { + if (error) { + throw new IOException() + } + process + } + } + + class PipeSinkMock extends Process.PipeSink("PipeSinkMock") { + var releaseCount = 0 + override val pipe = null + override val sink = null + override def run(): Unit = {} + override def connectOut(out: OutputStream): Unit = {} + override def connectIn(pipeOut: PipedOutputStream): Unit = {} + override def release(): Unit = { releaseCount += 1 } + } + + class PipeSourceMock extends Process.PipeSource("PipeSourceMock") { + var releaseCount = 0 + override val pipe = null + override val source = null + override def run(): Unit = {} + override def connectIn(in: InputStream): Unit = {} + override def connectOut(sink: Process.PipeSink): Unit = {} + override def release(): Unit = { releaseCount += 1 } + } + + class PipedProcesses(a: ProcessBuilder, b: ProcessBuilder, defaultIO: ProcessIO, toError: Boolean) + extends Process.PipedProcesses(a, b, defaultIO, toError) { + def callRunAndExitValue(source: Process.PipeSource, sink: Process.PipeSink) = { + val m = classOf[Process.PipedProcesses].getDeclaredMethod("runAndExitValue", classOf[Process.PipeSource], classOf[Process.PipeSink]) + m.setAccessible(true) + try m.invoke(this, source, sink).asInstanceOf[Option[Int]] + catch { + case err: InvocationTargetException => throw err.getTargetException + } + } + } + + // PipedProcesses need not to release resources when it normally end + @Test + def normallyEnd() { + val io = BasicIO(false, ProcessLogger(_ => ())) + val source = new PipeSourceMock + val sink = new PipeSinkMock + val a = new ProcessMock(error = false) + val b = new ProcessMock(error = false) + val p = new PipedProcesses(new ProcessBuilderMock(a, error = false), new ProcessBuilderMock(b, error = false), io, false) + val f = Future { + p.callRunAndExitValue(source, sink) + } + Await.result(f, Duration(1, SECONDS)) + assert(source.releaseCount == 0) + assert(sink.releaseCount == 0) + assert(a.destroyCount == 0) + assert(b.destroyCount == 0) + } + + // PipedProcesses must release resources when b.run() failed + @Test + def bFailed() { + val io = BasicIO(false, ProcessLogger(_ => ())) + val source = new PipeSourceMock + val sink = new PipeSinkMock + val a = new ProcessMock(error = false) + val b = new ProcessMock(error = false) + val p = new PipedProcesses(new ProcessBuilderMock(a, error = false), new ProcessBuilderMock(b, error = true), io, false) + val f = Future { + ignoring(classOf[IOException]) { + p.callRunAndExitValue(source, sink) + } + } + Await.result(f, Duration(1, SECONDS)) + assert(source.releaseCount == 1) + assert(sink.releaseCount == 1) + assert(a.destroyCount == 0) + assert(b.destroyCount == 0) + } + + // PipedProcesses must release resources when a.run() failed + @Test + def aFailed() { + val io = BasicIO(false, ProcessLogger(_ => ())) + val source = new PipeSourceMock + val sink = new PipeSinkMock + val a = new ProcessMock(error = false) + val b = new ProcessMock(error = false) + val p = new PipedProcesses(new ProcessBuilderMock(a, error = true), new ProcessBuilderMock(b, error = false), io, false) + val f = Future { + ignoring(classOf[IOException]) { + p.callRunAndExitValue(source, sink) + } + } + Await.result(f, Duration(1, SECONDS)) + assert(source.releaseCount == 1) + assert(sink.releaseCount == 1) + assert(a.destroyCount == 0) + assert(b.destroyCount == 1) + } + + // PipedProcesses must release resources when interrupted during waiting for first.exitValue() + @Test + def firstInterrupted() { + val io = BasicIO(false, ProcessLogger(_ => ())) + val source = new PipeSourceMock + val sink = new PipeSinkMock + val a = new ProcessMock(error = true) + val b = new ProcessMock(error = false) + val p = new PipedProcesses(new ProcessBuilderMock(a, error = false), new ProcessBuilderMock(b, error = false), io, false) + val f = Future { + p.callRunAndExitValue(source, sink) + } + Await.result(f, Duration(1, SECONDS)) + assert(source.releaseCount == 1) + assert(sink.releaseCount == 1) + assert(a.destroyCount == 1) + assert(b.destroyCount == 1) + } + + // PipedProcesses must release resources when interrupted during waiting for second.exitValue() + @Test + def secondInterrupted() { + val io = BasicIO(false, ProcessLogger(_ => ())) + val source = new PipeSourceMock + val sink = new PipeSinkMock + val a = new ProcessMock(error = false) + val b = new ProcessMock(error = true) + val p = new PipedProcesses(new ProcessBuilderMock(a, error = false), new ProcessBuilderMock(b, error = false), io, false) + val f = Future { + p.callRunAndExitValue(source, sink) + } + Await.result(f, Duration(1, SECONDS)) + assert(source.releaseCount == 1) + assert(sink.releaseCount == 1) + assert(a.destroyCount == 1) + assert(b.destroyCount == 1) + } +} + +@RunWith(classOf[JUnit4]) +class PipeSourceSinkTest { + def throwsIOException(f: => Unit) = { + try { f; false } + catch { case _: IOException => true } + } + + class PipeSink extends Process.PipeSink("TestPipeSink") { + def ensureRunloopStarted() = { + while (sink.size() > 0) { + Thread.sleep(1) + } + } + def isReleased = { + val field = classOf[Process.PipeSink].getDeclaredField("pipe") + field.setAccessible(true) + val pipe = field.get(this).asInstanceOf[PipedInputStream] + !this.isAlive && throwsIOException { pipe.read() } + } + } + + class PipeSource extends Process.PipeSource("TestPipeSource") { + def ensureRunloopStarted() = { + while (source.size() > 0) { + Thread.sleep(1) + } + } + def isReleased = { + val field = classOf[Process.PipeSource].getDeclaredField("pipe") + field.setAccessible(true) + val pipe = field.get(this).asInstanceOf[PipedOutputStream] + !this.isAlive && throwsIOException { pipe.write(1) } + } + } + + trait CloseChecking extends Closeable { + var closed = false + override def close() = closed = true + } + class DebugOutputStream extends ByteArrayOutputStream with CloseChecking + class DebugInputStream(s: String) extends ByteArrayInputStream(s.getBytes()) with CloseChecking + class DebugInfinityInputStream extends InputStream with CloseChecking { + def read() = 1 + } + + def sourceSink() = { + val source = new PipeSource + val sink = new PipeSink + source connectOut sink + source.start() + sink.start() + (source, sink) + } + + // PipeSource and PipeSink must release resources when it normally end + @Test + def normallyEnd() { + val in = new DebugInputStream("aaa") + val (source, sink) = sourceSink() + val out = new DebugOutputStream + source connectIn in + sink connectOut out + val f = Future { + source.join() + sink.join() + } + Await.result(f, Duration(1, SECONDS)) + assert(in.closed == true) + assert(out.closed == true) + assert(source.isReleased == true) + assert(sink.isReleased == true) + } + + // PipeSource and PipeSink must release resources when interrupted during waiting for source.take() + @Test + def sourceInterrupted() { + val (source, sink) = sourceSink() + val out = new DebugOutputStream + sink connectOut out + val f = Future { + sink.ensureRunloopStarted() + source.release() + sink.release() + } + Await.result(f, Duration(1, SECONDS)) + assert(out.closed == true) + assert(source.isReleased == true) + assert(sink.isReleased == true) + } + + // PipeSource and PipeSink must release resources when interrupted during waiting for sink.take() + @Test + def sinkInterrupted() { + val in = new DebugInputStream("aaa") + val (source, sink) = sourceSink() + source connectIn in + val f = Future { + source.ensureRunloopStarted() + source.release() + sink.release() + } + Await.result(f, Duration(1, SECONDS)) + assert(in.closed == true) + assert(source.isReleased == true) + assert(sink.isReleased == true) + } + + // PipeSource and PipeSink must release resources when interrupted during copy streams" + @Test + def runloopInterrupted() { + val in = new DebugInfinityInputStream + val (source, sink) = sourceSink() + val out = new DebugOutputStream + source connectIn in + sink connectOut out + val f = Future { + source.ensureRunloopStarted() + sink.ensureRunloopStarted() + source.release() + sink.release() + } + Await.result(f, Duration(1, SECONDS)) + assert(in.closed == true) + assert(out.closed == true) + assert(source.isReleased == true) + assert(sink.isReleased == true) + } +} diff --git a/test/scaladoc/run/t7905.check b/test/scaladoc/run/t7905.check new file mode 100644 index 0000000000..619c56180b --- /dev/null +++ b/test/scaladoc/run/t7905.check @@ -0,0 +1 @@ +Done. diff --git a/test/scaladoc/run/t7905.scala b/test/scaladoc/run/t7905.scala new file mode 100644 index 0000000000..8570724470 --- /dev/null +++ b/test/scaladoc/run/t7905.scala @@ -0,0 +1,36 @@ +import scala.tools.nsc.doc.model._ +import scala.tools.partest.ScaladocModelTest + +object Test extends ScaladocModelTest { + override def code = """ + object A { + val foo = new B { + val bar = new C { + val baz: A.this.type = A.this + } + } + } + + trait B { + type E = bar.D + + val bar: C + } + + trait C { + trait D + } + + trait G { + type F = A.foo.E + + def m(f: F) = f match { + case _: A.foo.bar.D => // error here + } + } + """ + + def scaladocSettings = "" + + def testModel(root: Package) = () +} diff --git a/test/scaladoc/scalacheck/HtmlFactoryTest.scala b/test/scaladoc/scalacheck/HtmlFactoryTest.scala index da0f253a37..fc190b188c 100644 --- a/test/scaladoc/scalacheck/HtmlFactoryTest.scala +++ b/test/scaladoc/scalacheck/HtmlFactoryTest.scala @@ -779,6 +779,11 @@ object Test extends Properties("HtmlFactory") { linkElement \@ "href" == expectedUrl && linkElement \@ "target" == "_top" } + def assertValuesLink(memberName: String, expectedUrl: String): Boolean = { + val linkElement: NodeSeq = node \\ "div" \@ ("class", "values members") \\ "li" \@ ("name", memberName) \\ "span" \@ ("class", "permalink") \ "a" + linkElement \@ "href" == expectedUrl && linkElement \@ "target" == "_top" + } + } val files = createTemplates("SI-8144.scala") @@ -791,12 +796,12 @@ object Test extends Properties("HtmlFactory") { property("SI-8144: Members' permalink - package") = check("some/package.html") { node => ("type link" |: node.assertTypeLink("../index.html#some.package")) && - ("member: some.pack" |: node.assertMemberLink("values")("some.pack", "../index.html#some.package@pack")) + ("member: some.pack" |: node.assertValuesLink("some.pack", "../index.html#some.package@pack")) } property("SI-8144: Members' permalink - inner package") = check("some/pack/package.html") { node => ("type link" |: node.assertTypeLink("../../index.html#some.pack.package")) && - ("member: SomeType (object)" |: node.assertMemberLink("values")("some.pack.SomeType", "../../index.html#some.pack.package@SomeType")) && + ("member: SomeType (object)" |: node.assertValuesLink("some.pack.SomeType", "../../index.html#some.pack.package@SomeType")) && ("member: SomeType (class)" |: node.assertMemberLink("types")("some.pack.SomeType", "../../index.html#some.pack.package@SomeTypeextendsAnyRef")) } @@ -809,8 +814,8 @@ object Test extends Properties("HtmlFactory") { ("type link" |: node.assertTypeLink("../../index.html#some.pack.SomeType")) && ("constructor " |: node.assertMemberLink("constructors")("some.pack.SomeType#<init>", "../../index.html#some.pack.SomeType@<init>(arg:String):some.pack.SomeType")) && ( "member: type TypeAlias" |: node.assertMemberLink("types")("some.pack.SomeType.TypeAlias", "../../index.html#some.pack.SomeType@TypeAlias=String")) && - ( "member: def >#<():Int " |: node.assertMemberLink("values")("some.pack.SomeType#>#<", "../../index.html#some.pack.SomeType@>#<():Int")) && - ( "member: def >@<():TypeAlias " |: node.assertMemberLink("values")("some.pack.SomeType#>@<", "../../index.html#some.pack.SomeType@>@<():SomeType.this.TypeAlias")) + ( "member: def >#<():Int " |: node.assertValuesLink("some.pack.SomeType#>#<", "../../index.html#some.pack.SomeType@>#<():Int")) && + ( "member: def >@<():TypeAlias " |: node.assertValuesLink("some.pack.SomeType#>@<", "../../index.html#some.pack.SomeType@>@<():SomeType.this.TypeAlias")) } } diff --git a/versions.properties b/versions.properties index 454df6b757..c334629d20 100644 --- a/versions.properties +++ b/versions.properties @@ -1,10 +1,10 @@ -#Wed, 23 Jul 2014 08:37:26 +0200 +#Tue, 20 May 2014 10:01:37 +0200 # NOTE: this file determines the content of the scala-distribution # via scala-dist-pom.xml and scala-library-all-pom.xml # when adding new properties that influence a release, # also add them to the update.versions mechanism in build.xml, # which is used by scala-release-2.11.x in scala/jenkins-scripts -starr.version=2.11.2 +starr.version=2.11.1 starr.use.released=1 # These are the versions of the modules that go with this release. @@ -14,21 +14,21 @@ starr.use.released=1 scala.binary.version=2.11 # e.g. 2.11.0-RC1, 2.11.0, 2.11.1-RC1, 2.11.1 # this defines the dependency on scala-continuations-plugin in scala-dist's pom -scala.full.version=2.11.2 +scala.full.version=2.11.1 # external modules shipped with distribution, as specified by scala-library-all's pom scala-xml.version.number=1.0.2 -scala-parser-combinators.version.number=1.0.2 +scala-parser-combinators.version.number=1.0.1 scala-continuations-plugin.version.number=1.0.2 scala-continuations-library.version.number=1.0.2 scala-swing.version.number=1.0.1 -akka-actor.version.number=2.3.4 +akka-actor.version.number=2.3.3 actors-migration.version.number=1.1.0 jline.version=2.12 # external modules, used internally (not shipped) -partest.version.number=1.0.1 -scalacheck.version.number=1.11.4 +partest.version.number=1.0.0 +scalacheck.version.number=1.11.3 # TODO: modularize the compiler #scala-compiler-doc.version.number=1.0.0-RC1 |