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| author | Martin Odersky <odersky@gmail.com> | 2010-05-21 16:04:18 +0000 |
|---|---|---|
| committer | Martin Odersky <odersky@gmail.com> | 2010-05-21 16:04:18 +0000 |
| commit | 90c59eb70a53e7ee0a8120ae53b4eeb711c44642 (patch) | |
| tree | 15570f009cebf54c15713dedf69e0a87fd58a891 | |
| parent | 1a66cb21931f53ab46d1ef21136c30dbfd6977d6 (diff) | |
| download | scala-90c59eb70a53e7ee0a8120ae53b4eeb711c44642.tar.gz scala-90c59eb70a53e7ee0a8120ae53b4eeb711c44642.tar.bz2 scala-90c59eb70a53e7ee0a8120ae53b4eeb711c44642.zip | |
Added +=: prepend to MutableList.
| -rw-r--r-- | src/compiler/scala/tools/nsc/typechecker/Typers.scala | 4 | ||||
| -rw-r--r-- | src/library/scala/collection/mutable/MutableList.scala | 7 |
2 files changed, 9 insertions, 2 deletions
diff --git a/src/compiler/scala/tools/nsc/typechecker/Typers.scala b/src/compiler/scala/tools/nsc/typechecker/Typers.scala index aad80c1d8c..705b835e89 100644 --- a/src/compiler/scala/tools/nsc/typechecker/Typers.scala +++ b/src/compiler/scala/tools/nsc/typechecker/Typers.scala @@ -3476,14 +3476,14 @@ trait Typers { self: Analyzer => //if (name.toString == "Elem") println("typedSelect "+qual+":"+qual.tpe+" "+sym+"/"+tree1+":"+tree1.tpe) val (tree2, pre2) = makeAccessible(tree1, sym, qual.tpe, qual) val result = stabilize(tree2, pre2, mode, pt) - def isPotentialNullDeference() = { + def isPotentialNullDereference() = { phase.id <= currentRun.typerPhase.id && !sym.isConstructor && !(qual.tpe <:< NotNullClass.tpe) && !qual.tpe.isNotNull && !(List(Any_isInstanceOf, Any_asInstanceOf) contains result.symbol) // null.is/as is not a dereference } // unit is null here sometimes; how are we to know when unit might be null? (See bug #2467.) - if (settings.Xchecknull.value && isPotentialNullDeference && unit != null) + if (settings.Xchecknull.value && isPotentialNullDereference && unit != null) unit.warning(tree.pos, "potential null pointer dereference: "+tree) result diff --git a/src/library/scala/collection/mutable/MutableList.scala b/src/library/scala/collection/mutable/MutableList.scala index 81f33866ac..65c973c9ec 100644 --- a/src/library/scala/collection/mutable/MutableList.scala +++ b/src/library/scala/collection/mutable/MutableList.scala @@ -55,6 +55,13 @@ class MutableList[A] extends LinearSeq[A] tl } + /** Prepends a single element to this list. This operation takes constant + * time. + * @param elem the element to prepend. + * @return this $coll. + */ + def +=: (elem: A): this.type = { prependElem(elem); this } + /** Returns the length of this list. */ override def length: Int = len |