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| author | Adriaan Moors <adriaan.moors@epfl.ch> | 2012-07-21 08:51:50 +0200 |
|---|---|---|
| committer | Adriaan Moors <adriaan.moors@epfl.ch> | 2012-07-22 15:49:28 +0200 |
| commit | 1413713bddd1d14e9cb51ca5b3f2d10f82000b6e (patch) | |
| tree | 60895ed66f7a536b1f8f97ebcf1c13bc12b3c13e | |
| parent | fa4c1de6e7dc5e5703ccf822c5815da9e8ae47ed (diff) | |
| download | scala-1413713bddd1d14e9cb51ca5b3f2d10f82000b6e.tar.gz scala-1413713bddd1d14e9cb51ca5b3f2d10f82000b6e.tar.bz2 scala-1413713bddd1d14e9cb51ca5b3f2d10f82000b6e.zip | |
SI-6089 test file for pt2
test that matchEnd that's an argument of || that's in tail position is in tail position
| -rw-r--r-- | test/files/pos/t6089b.scala | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/test/files/pos/t6089b.scala b/test/files/pos/t6089b.scala new file mode 100644 index 0000000000..ff7ca157eb --- /dev/null +++ b/test/files/pos/t6089b.scala @@ -0,0 +1,18 @@ +// this crazy code simply tries to nest pattern matches so that the last call is in a tricky-to-determine +// tail position (my initial tightenign of tailpos detection for SI-6089 ruled this out) +class BKTree { + @annotation.tailrec + final def -?-[AA](a: AA): Boolean = this match { + case BKTreeEmpty => false + case BKTreeNode(v) => { + val d = 1 + d == 0 || ( Map(1 -> this,2 -> this,3 -> this) get d match { + case None => false + case Some(w) => w -?- a // can tail call here (since || is shortcutting) + }) + } + } +} + +object BKTreeEmpty extends BKTree +case class BKTreeNode[A](v: A) extends BKTree
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