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Diffstat (limited to 'test/files/run/t5830.scala')
-rw-r--r-- | test/files/run/t5830.scala | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/test/files/run/t5830.scala b/test/files/run/t5830.scala new file mode 100644 index 0000000000..5d808bfa28 --- /dev/null +++ b/test/files/run/t5830.scala @@ -0,0 +1,56 @@ +import scala.annotation.switch + +object Test extends App { + // TODO: should not emit a switch + // def noSwitch(ch: Char, eof: Boolean) = (ch: @switch) match { + // case 'a' if eof => println("a with oef") // then branch + // } + + def onlyThen(ch: Char, eof: Boolean) = (ch: @switch) match { + case 'a' if eof => println("a with oef") // then branch + case 'c' => + } + + def ifThenElse(ch: Char, eof: Boolean) = (ch: @switch) match { + case 'a' if eof => println("a with oef") // then branch + case 'a' if eof => println("a with oef2") // unreachable, but the analysis is not that sophisticated + case 'a' => println("a") // else-branch + case 'c' => + } + + def defaultUnguarded(ch: Char, eof: Boolean) = (ch: @switch) match { + case ' ' if eof => println("spacey oef") + case _ => println("default") + } + + def defaults(ch: Char, eof: Boolean) = (ch: @switch) match { + case _ if eof => println("def with oef") // then branch + case _ if eof => println("def with oef2") // unreachable, but the analysis is not that sophisticated + case _ => println("def") // else-branch + } + + // test binders in collapsed cases (no need to run, it's "enough" to know it doesn't crash the compiler) + def guard(x: Any): Boolean = true + def testBinders = + try { println("") } // work around SI-6015 + catch { + case _ if guard(null) => + case x if guard(x) => throw x + } + + // def unreachable(ch: Char) = (ch: @switch) match { + // case 'a' => println("b") // ok + // case 'a' => println("b") // unreachable + // case 'c' => + // } + + // noSwitch('a', true) + onlyThen('a', true) // 'a with oef' + ifThenElse('a', true) // 'a with oef' + ifThenElse('a', false) // 'a' + defaults('a', true) // 'def with oef' + defaults('a', false) // 'def' + + // test that it jumps to default case, no match error + defaultUnguarded(' ', false) // default +}
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