diff options
Diffstat (limited to 'src/compiler/scala/tools/nsc/typechecker/Typers.scala')
| -rw-r--r-- | src/compiler/scala/tools/nsc/typechecker/Typers.scala | 91 |
1 files changed, 59 insertions, 32 deletions
diff --git a/src/compiler/scala/tools/nsc/typechecker/Typers.scala b/src/compiler/scala/tools/nsc/typechecker/Typers.scala index 192917d4aa..837ccf7e06 100644 --- a/src/compiler/scala/tools/nsc/typechecker/Typers.scala +++ b/src/compiler/scala/tools/nsc/typechecker/Typers.scala @@ -13,11 +13,12 @@ package scala package tools.nsc package typechecker -import scala.collection.{mutable, immutable} -import scala.reflect.internal.util.{ Statistics, ListOfNil } +import scala.collection.{immutable, mutable} +import scala.reflect.internal.util.{ListOfNil, Statistics} import mutable.ListBuffer import symtab.Flags._ import Mode._ +import scala.reflect.macros.whitebox // Suggestion check whether we can do without priming scopes with symbols of outer scopes, // like the IDE does. @@ -1690,7 +1691,7 @@ trait Typers extends Adaptations with Tags with TypersTracking with PatternTyper supertpts mapConserve (tpt => checkNoEscaping.privates(context.owner, tpt)) } catch { - case ex: TypeError => + case ex: TypeError if !global.propagateCyclicReferences => // fallback in case of cyclic errors // @H none of the tests enter here but I couldn't rule it out // upd. @E when a definition inherits itself, we end up here @@ -1751,13 +1752,6 @@ trait Typers extends Adaptations with Tags with TypersTracking with PatternTyper context.deprecationWarning(parent.pos, psym, report, version) } - if (psym.isSealed && !phase.erasedTypes) - if (sameSourceFile) - psym addChild context.owner - else - pending += ParentSealedInheritanceError(parent, psym) - if (psym.isLocalToBlock && !phase.erasedTypes) - psym addChild context.owner val parentTypeOfThis = parent.tpe.dealias.typeOfThis if (!(selfType <:< parentTypeOfThis) && @@ -2033,7 +2027,12 @@ trait Typers extends Adaptations with Tags with TypersTracking with PatternTyper // use typedValDef instead. this version is called after creating a new context for the ValDef private def typedValDefImpl(vdef: ValDef) = { val sym = vdef.symbol.initialize - val typedMods = typedModifiers(vdef.mods) + val typedMods = if (nme.isLocalName(sym.name) && sym.isPrivateThis && !vdef.mods.isPrivateLocal) { + // SI-10009 This tree has been given a field symbol by `enterGetterSetter`, patch up the + // modifiers accordingly so that we can survive resetAttrs and retypechecking. + // Similarly, we use `sym.name` rather than `vdef.name` below to use the local name. + typedModifiers(vdef.mods.copy(flags = sym.flags, privateWithin = tpnme.EMPTY)) + } else typedModifiers(vdef.mods) sym.annotations.map(_.completeInfo()) val tpt1 = checkNoEscaping.privates(sym, typedType(vdef.tpt)) @@ -2041,7 +2040,7 @@ trait Typers extends Adaptations with Tags with TypersTracking with PatternTyper // allow trait accessors: it's the only vehicle we have to hang on to annotations that must be passed down to // the field that's mixed into a subclass - if (sym.hasAnnotation(definitions.VolatileAttr) && !((sym hasFlag MUTABLE) || (sym hasFlag ACCESSOR) && sym.owner.isTrait)) + if (sym.hasAnnotation(definitions.VolatileAttr) && !((sym hasFlag MUTABLE | LAZY) || (sym hasFlag ACCESSOR) && sym.owner.isTrait)) VolatileValueError(vdef) val rhs1 = @@ -2068,7 +2067,7 @@ trait Typers extends Adaptations with Tags with TypersTracking with PatternTyper } else tpt1.tpe transformedOrTyped(vdef.rhs, EXPRmode | BYVALmode, tpt2) } - treeCopy.ValDef(vdef, typedMods, vdef.name, tpt1, checkDead(rhs1)) setType NoType + treeCopy.ValDef(vdef, typedMods, sym.name, tpt1, checkDead(rhs1)) setType NoType } /** Enter all aliases of local parameter accessors. @@ -2568,7 +2567,7 @@ trait Typers extends Adaptations with Tags with TypersTracking with PatternTyper // TODO: add fallback __match sentinel to predef val matchStrategy: Tree = - if (!(settings.Xexperimental && context.isNameInScope(vpmName._match))) null // fast path, avoiding the next line if there's no __match to be seen + if (!(settings.Yvirtpatmat && context.isNameInScope(vpmName._match))) null // fast path, avoiding the next line if there's no __match to be seen else newTyper(context.makeImplicit(reportAmbiguousErrors = false)).silent(_.typed(Ident(vpmName._match)), reportAmbiguousErrors = false) orElse (_ => null) if (matchStrategy ne null) // virtualize @@ -3415,7 +3414,7 @@ trait Typers extends Adaptations with Tags with TypersTracking with PatternTyper // governed by a) the argument types and b) the expected type val args1 = typedArgs(args, forArgMode(fun, mode)) val pts = args1.map(_.tpe.deconst) - val clone = fun.symbol.cloneSymbol + val clone = fun.symbol.cloneSymbol.withoutAnnotations val cloneParams = pts map (pt => clone.newValueParameter(currentUnit.freshTermName()).setInfo(pt)) val resultType = if (isFullyDefined(pt)) pt else ObjectTpe clone.modifyInfo(mt => copyMethodType(mt, cloneParams, resultType)) @@ -4638,22 +4637,55 @@ trait Typers extends Adaptations with Tags with TypersTracking with PatternTyper val appStart = if (Statistics.canEnable) Statistics.startTimer(failedApplyNanos) else null val opeqStart = if (Statistics.canEnable) Statistics.startTimer(failedOpEqNanos) else null - def onError(reportError: => Tree): Tree = fun match { - case Select(qual, name) - if !mode.inPatternMode && nme.isOpAssignmentName(newTermName(name.decode)) && !qual.exists(_.isErroneous) => + def isConversionCandidate(qual: Tree, name: Name): Boolean = + !mode.inPatternMode && nme.isOpAssignmentName(TermName(name.decode)) && !qual.exists(_.isErroneous) + def reportError(error: SilentTypeError): Tree = { + error.reportableErrors foreach context.issue + error.warnings foreach { case (p, m) => context.warning(p, m) } + args foreach (arg => typed(arg, mode, ErrorType)) + setError(tree) + } + def advice1(convo: Tree, errors: List[AbsTypeError], err: SilentTypeError): List[AbsTypeError] = + errors.map { e => + if (e.errPos == tree.pos) { + val header = f"${e.errMsg}%n Expression does not convert to assignment because:%n " + val expansion = f"%n expansion: ${show(convo)}" + NormalTypeError(tree, err.errors.flatMap(_.errMsg.lines.toList).mkString(header, f"%n ", expansion)) + } else e + } + def advice2(errors: List[AbsTypeError]): List[AbsTypeError] = + errors.map { e => + if (e.errPos == tree.pos) { + val msg = f"${e.errMsg}%n Expression does not convert to assignment because receiver is not assignable." + NormalTypeError(tree, msg) + } else e + } + def onError(error: SilentTypeError): Tree = fun match { + case Select(qual, name) if isConversionCandidate(qual, name) => val qual1 = typedQualifier(qual) if (treeInfo.isVariableOrGetter(qual1)) { if (Statistics.canEnable) Statistics.stopTimer(failedOpEqNanos, opeqStart) - convertToAssignment(fun, qual1, name, args) + val erred = qual1.isErroneous || args.exists(_.isErroneous) + if (erred) reportError(error) else { + val convo = convertToAssignment(fun, qual1, name, args) + silent(op = _.typed1(convo, mode, pt)) match { + case SilentResultValue(t) => t + case err: SilentTypeError => reportError(SilentTypeError(advice1(convo, error.errors, err), error.warnings)) + } + } } else { if (Statistics.canEnable) Statistics.stopTimer(failedApplyNanos, appStart) - reportError + val Apply(Select(qual2, _), args2) = tree + val erred = qual2.isErroneous || args2.exists(_.isErroneous) + reportError { + if (erred) error else SilentTypeError(advice2(error.errors), error.warnings) + } } case _ => if (Statistics.canEnable) Statistics.stopTimer(failedApplyNanos, appStart) - reportError + reportError(error) } val silentResult = silent( op = _.typed(fun, mode.forFunMode, funpt), @@ -4678,13 +4710,7 @@ trait Typers extends Adaptations with Tags with TypersTracking with PatternTyper tryTypedApply(fun2, args) else doTypedApply(tree, fun2, args, mode, pt) - case err: SilentTypeError => - onError({ - err.reportableErrors foreach context.issue - err.warnings foreach { case (p, m) => context.warning(p, m) } - args foreach (arg => typed(arg, mode, ErrorType)) - setError(tree) - }) + case err: SilentTypeError => onError(err) } } @@ -4727,7 +4753,7 @@ trait Typers extends Adaptations with Tags with TypersTracking with PatternTyper Select(vble.duplicate, prefix) setPos fun.pos.focus, args) setPos tree.pos.makeTransparent ) setPos tree.pos - def mkUpdate(table: Tree, indices: List[Tree]) = { + def mkUpdate(table: Tree, indices: List[Tree]) = gen.evalOnceAll(table :: indices, context.owner, context.unit) { case tab :: is => def mkCall(name: Name, extraArgs: Tree*) = ( @@ -4742,9 +4768,8 @@ trait Typers extends Adaptations with Tags with TypersTracking with PatternTyper ) case _ => EmptyTree } - } - val tree1 = qual match { + val assignment = qual match { case Ident(_) => mkAssign(qual) @@ -4760,7 +4785,7 @@ trait Typers extends Adaptations with Tags with TypersTracking with PatternTyper case _ => UnexpectedTreeAssignmentConversionError(qual) } } - typed1(tree1, mode, pt) + assignment } def typedSuper(tree: Super) = { @@ -5561,6 +5586,8 @@ trait Typers extends Adaptations with Tags with TypersTracking with PatternTyper } try runTyper() catch { + case ex: CyclicReference if global.propagateCyclicReferences => + throw ex case ex: TypeError => tree.clearType() // The only problematic case are (recoverable) cyclic reference errors which can pop up almost anywhere. |