diff options
author | Martin Odersky <odersky@gmail.com> | 2011-10-27 17:27:22 +0000 |
---|---|---|
committer | Martin Odersky <odersky@gmail.com> | 2011-10-27 17:27:22 +0000 |
commit | daf6f0d5dd12f481cdbb41a265ec803445bfc880 (patch) | |
tree | 9a02e0f60d5632441bb179d06458117af5e315d1 /src | |
parent | 893e8b63912ab7705468282191f8ff3c7c19e89e (diff) | |
download | scala-daf6f0d5dd12f481cdbb41a265ec803445bfc880.tar.gz scala-daf6f0d5dd12f481cdbb41a265ec803445bfc880.tar.bz2 scala-daf6f0d5dd12f481cdbb41a265ec803445bfc880.zip |
Hopefully a fix for the hyperlinking problem.
Diffstat (limited to 'src')
-rw-r--r-- | src/compiler/scala/tools/nsc/typechecker/Typers.scala | 38 |
1 files changed, 20 insertions, 18 deletions
diff --git a/src/compiler/scala/tools/nsc/typechecker/Typers.scala b/src/compiler/scala/tools/nsc/typechecker/Typers.scala index c7cce077d6..27753e85b8 100644 --- a/src/compiler/scala/tools/nsc/typechecker/Typers.scala +++ b/src/compiler/scala/tools/nsc/typechecker/Typers.scala @@ -2315,6 +2315,9 @@ trait Typers extends Modes with Adaptations with PatMatVirtualiser { def doTypedApply(tree: Tree, fun0: Tree, args: List[Tree], mode: Int, pt: Type): Tree = { // TODO_NMT: check the assumption that args nonEmpty + def errTree = setError(treeCopy.Apply(tree, fun0, args)) + def errorTree(msg: String) = { error(tree.pos, msg); errTree } + var fun = fun0 if (fun.hasSymbol && fun.symbol.isOverloaded) { // remove alternatives with wrong number of parameters without looking at types. @@ -2414,22 +2417,21 @@ trait Typers extends Modes with Adaptations with PatMatVirtualiser { def tryNamesDefaults: Tree = { val lencmp = compareLengths(args, formals) - if (mt.isErroneous) setError(tree) + if (mt.isErroneous) errTree else if (inPatternMode(mode)) // #2064 - errorTree(tree, "wrong number of arguments for "+ treeSymTypeMsg(fun)) + errorTree("wrong number of arguments for "+ treeSymTypeMsg(fun)) else if (lencmp > 0) { - tryTupleApply getOrElse errorTree(tree, "too many arguments for "+treeSymTypeMsg(fun)) + tryTupleApply getOrElse errorTree("too many arguments for "+treeSymTypeMsg(fun)) } else if (lencmp == 0) { // we don't need defaults. names were used, so this application is transformed // into a block (@see transformNamedApplication in NamesDefaults) val (namelessArgs, argPos) = removeNames(Typer.this)(args, params) if (namelessArgs exists (_.isErroneous)) { - setError(tree) + errTree } else if (!isIdentity(argPos) && !sameLength(formals, params)) // !isIdentity indicates that named arguments are used to re-order arguments - errorTree(tree, "when using named arguments, the vararg parameter "+ - "has to be specified exactly once") + errorTree("when using named arguments, the vararg parameter has to be specified exactly once") else if (isIdentity(argPos) && !isNamedApplyBlock(fun)) { // if there's no re-ordering, and fun is not transformed, no need to transform // more than an optimization, e.g. important in "synchronized { x = update-x }" @@ -2443,7 +2445,7 @@ trait Typers extends Modes with Adaptations with PatMatVirtualiser { // calls to the default getters. Example: // foo[Int](a)() ==> foo[Int](a)(b = foo$qual.foo$default$2[Int](a)) val fun1 = transformNamedApplication(Typer.this, mode, pt)(fun, x => x) - if (fun1.isErroneous) setError(tree) + if (fun1.isErroneous) errTree else { assert(isNamedApplyBlock(fun1), fun1) val NamedApplyInfo(qual, targs, previousArgss, _) = context.namedApplyBlockInfo.get._2 @@ -2460,17 +2462,17 @@ trait Typers extends Modes with Adaptations with PatMatVirtualiser { val lencmp2 = compareLengths(allArgs, formals) if (!sameLength(allArgs, args) && callToCompanionConstr(context, funSym)) { - errorTree(tree, "module extending its companion class cannot use default constructor arguments") + errorTree("module extending its companion class cannot use default constructor arguments") } else if (lencmp2 > 0) { removeNames(Typer.this)(allArgs, params) // #3818 - setError(tree) + errTree } else if (lencmp2 == 0) { // useful when a default doesn't match parameter type, e.g. def f[T](x:T="a"); f[Int]() val note = "Error occurred in an application involving default arguments." if (!(context.diagnostic contains note)) context.diagnostic = note :: context.diagnostic doTypedApply(tree, if (blockIsEmpty) fun else fun1, allArgs, mode, pt) } else { - tryTupleApply getOrElse errorTree(tree, notEnoughArgumentsMsg(fun, missing)) + tryTupleApply getOrElse errorTree(notEnoughArgumentsMsg(fun, missing)) } } } @@ -2555,7 +2557,7 @@ trait Typers extends Modes with Adaptations with PatMatVirtualiser { arg1 } val args1 = (args, formals).zipped map typedArgToPoly - if (args1 exists (_.tpe.isError)) setError(tree) + if (args1 exists (_.tpe.isError)) errTree else { debuglog("infer method inst "+fun+", tparams = "+tparams+", args = "+args1.map(_.tpe)+", pt = "+pt+", lobounds = "+tparams.map(_.tpe.bounds.lo)+", parambounds = "+tparams.map(_.info)) //debug // define the undetparams which have been fixed by this param list, replace the corresponding symbols in "fun" @@ -2621,7 +2623,7 @@ trait Typers extends Modes with Adaptations with PatMatVirtualiser { // setType null is necessary so that ref will be stabilized; see bug 881 val fun1 = typedPos(fun.pos)(Apply(Select(fun setType null, unapp), List(arg))) - if (fun1.tpe.isErroneous) setError(tree) + if (fun1.tpe.isErroneous) errTree else { val formals0 = unapplyTypeList(fun1.symbol, fun1.tpe) val formals1 = formalTypes(formals0, args.length) @@ -2637,13 +2639,13 @@ trait Typers extends Modes with Adaptations with PatMatVirtualiser { UnApply(fun1, args1) setPos tree.pos setType itype } else { - errorTree(tree, "wrong number of arguments for "+treeSymTypeMsg(fun)) + errorTree("wrong number of arguments for "+treeSymTypeMsg(fun)) } } /* --- end unapply --- */ case _ => - errorTree(tree, fun.tpe+" does not take parameters") + errorTree(fun.tpe+" does not take parameters") } } @@ -3091,7 +3093,7 @@ trait Typers extends Modes with Adaptations with PatMatVirtualiser { errorTree(tree, "wrong number of type parameters for "+treeSymTypeMsg(fun)) } case ErrorType => - setError(tree) + setError(treeCopy.TypeApply(tree, fun, args)) case _ => errorTree(tree, treeSymTypeMsg(fun)+" does not take type parameters.") } @@ -3483,7 +3485,7 @@ trait Typers extends Modes with Adaptations with PatMatVirtualiser { } } reportTypeError(tree.pos, ex) - setError(tree) + setError(treeCopy.Apply(tree, fun, args)) } } @@ -3513,10 +3515,10 @@ trait Typers extends Modes with Adaptations with PatMatVirtualiser { && ((fun2.symbol eq null) || !fun2.symbol.isConstructor) && (mode & (EXPRmode | SNDTRYmode)) == EXPRmode ) - val res = ( + val res = if (useTry) tryTypedApply(fun2, args) else doTypedApply(tree, fun2, args, mode, pt) - ) + /* if (fun2.hasSymbol && fun2.symbol.isConstructor && (mode & EXPRmode) != 0) { res.tpe = res.tpe.notNull |