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author | Johannes Rudolph <johannes.rudolph@gmail.com> | 2014-06-25 13:40:13 +0200 |
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committer | Johannes Rudolph <johannes.rudolph@gmail.com> | 2014-06-25 15:24:26 +0200 |
commit | 299594e63a925c3e6042c6fd920de2f359417cbd (patch) | |
tree | 61558e65344b295d63c0ec425782c607e47d4104 /test/files/run/tailcalls.scala | |
parent | 1c0b48da8dfa124eb762620c8cb803a9079b7c81 (diff) | |
download | scala-299594e63a925c3e6042c6fd920de2f359417cbd.tar.gz scala-299594e63a925c3e6042c6fd920de2f359417cbd.tar.bz2 scala-299594e63a925c3e6042c6fd920de2f359417cbd.zip |
SI-8657 don't miss tailrec defs in more positions
1) First operand of boolean expression using `&&` or `||`. Second operands of
those boolean exprs were already treated specially here but handling for first
operands was missing.
2) Condition of `If`. Also added a test for guards.
Diffstat (limited to 'test/files/run/tailcalls.scala')
-rw-r--r-- | test/files/run/tailcalls.scala | 35 |
1 files changed, 33 insertions, 2 deletions
diff --git a/test/files/run/tailcalls.scala b/test/files/run/tailcalls.scala index 1653b14de9..8df2dcfcb6 100644 --- a/test/files/run/tailcalls.scala +++ b/test/files/run/tailcalls.scala @@ -213,6 +213,33 @@ class FancyTailCalls { } finally {} } + def tcInBooleanExprFirstOp(x: Int, v: Int): Boolean = { + { + def loop(n: Int): Int = if (n == 0) v else loop(n - 1) + loop(x) + } == v && true + } + def tcInBooleanExprSecondOp(x: Int, v: Int): Boolean = { + true && { + def loop(n: Int): Int = if (n == 0) v else loop(n - 1) + loop(x) + } == v + } + def tcInIfCond(x: Int, v: Int): Boolean = { + if ({ + def loop(n: Int): Int = if (n == 0) v else loop(n - 1) + loop(x) + } == v) true else false + } + def tcInPatternGuard(x: Int, v: Int): Boolean = + v match { + case _ if + { + def loop(n: Int): Int = if (n == 0) v else loop(n - 1) + loop(x) == v + } => true + } + import FancyTailCalls._ final def differentInstance(n: Int, v: Int): Int = { if (n == 0) v @@ -376,8 +403,12 @@ object Test { check_success_b("TailCall.b2", TailCall.b2(max), true) val FancyTailCalls = new FancyTailCalls; - check_success("FancyTailCalls.tcTryLocal", FancyTailCalls.tcTryLocal(max, max), max) - check_success("FancyTailCalls.differentInstance", FancyTailCalls.differentInstance(max, 42), 42) + check_success("FancyTailCalls.tcTryLocal", FancyTailCalls.tcTryLocal(max, max), max) + check_success_b("FancyTailCalls.tcInBooleanExprFirstOp", FancyTailCalls.tcInBooleanExprFirstOp(max, max), true) + check_success_b("FancyTailCalls.tcInBooleanExprSecondOp", FancyTailCalls.tcInBooleanExprSecondOp(max, max), true) + check_success_b("FancyTailCalls.tcInIfCond", FancyTailCalls.tcInIfCond(max, max), true) + check_success_b("FancyTailCalls.tcInPatternGuard", FancyTailCalls.tcInPatternGuard(max, max), true) + check_success("FancyTailCalls.differentInstance", FancyTailCalls.differentInstance(max, 42), 42) check_success("PolyObject.tramp", PolyObject.tramp[Int](max), 0) } |