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author | Samuel Gruetter <samuel.gruetter@epfl.ch> | 2014-03-12 22:44:33 +0100 |
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committer | Samuel Gruetter <samuel.gruetter@epfl.ch> | 2014-03-12 22:44:33 +0100 |
commit | 9ef5f6817688f814a3450126aa7383b0928e80a0 (patch) | |
tree | 5727a2f7f7fd665cefdb312af2785c692f04377c /tests/untried/pos/t6089b.scala | |
parent | 194be919664447631ba55446eb4874979c908d27 (diff) | |
download | dotty-9ef5f6817688f814a3450126aa7383b0928e80a0.tar.gz dotty-9ef5f6817688f814a3450126aa7383b0928e80a0.tar.bz2 dotty-9ef5f6817688f814a3450126aa7383b0928e80a0.zip |
add tests from scala/test/files/{pos,neg}
with explicit Unit return type
Diffstat (limited to 'tests/untried/pos/t6089b.scala')
-rw-r--r-- | tests/untried/pos/t6089b.scala | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/tests/untried/pos/t6089b.scala b/tests/untried/pos/t6089b.scala new file mode 100644 index 000000000..9378a74a0 --- /dev/null +++ b/tests/untried/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 |