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| author | Adriaan Moors <adriaan.moors@typesafe.com> | 2013-04-04 16:51:41 -0700 |
|---|---|---|
| committer | Adriaan Moors <adriaan.moors@typesafe.com> | 2013-04-08 23:01:09 -0700 |
| commit | e7aadd00392a512ddcf53396d489f0f17bfac231 (patch) | |
| tree | ff62223bed6f9beafd97bd8bbb383adff5c54e8e /test | |
| parent | 53e031f55386d131b1aaa5fb93ee1a3ac6bce646 (diff) | |
| download | scala-e7aadd00392a512ddcf53396d489f0f17bfac231.tar.gz scala-e7aadd00392a512ddcf53396d489f0f17bfac231.tar.bz2 scala-e7aadd00392a512ddcf53396d489f0f17bfac231.zip | |
SI-7330 better error when pattern isn't a value
Somehow an applied type managed to sneak past the type checker in pattern mode.
Patterns must be values, though.
`case C[_] =>` was probably meant to be `case _: C[_] =>`
Advice is dispensed accordingly. (Generalizing the existing advice machinery.)
Diffstat (limited to 'test')
| -rw-r--r-- | test/files/neg/t414.check | 2 | ||||
| -rw-r--r-- | test/files/neg/t4879.check | 4 | ||||
| -rw-r--r-- | test/files/neg/t7330.check | 5 | ||||
| -rw-r--r-- | test/files/neg/t7330.scala | 5 |
4 files changed, 13 insertions, 3 deletions
diff --git a/test/files/neg/t414.check b/test/files/neg/t414.check index e15dbaea71..30211eef8e 100644 --- a/test/files/neg/t414.check +++ b/test/files/neg/t414.check @@ -1,7 +1,7 @@ t414.scala:5: error: pattern type is incompatible with expected type; found : Empty.type required: IntMap[a] -Note: if you intended to match against the class, try `case _: Empty[_]` or `case Empty()` +Note: if you intended to match against the class, try `case Empty()` case Empty => ^ t414.scala:7: error: type mismatch; diff --git a/test/files/neg/t4879.check b/test/files/neg/t4879.check index 21cd329640..c7edd583c8 100644 --- a/test/files/neg/t4879.check +++ b/test/files/neg/t4879.check @@ -1,13 +1,13 @@ t4879.scala:6: error: pattern type is incompatible with expected type; found : C.type required: C -Note: if you intended to match against the class, try `case _: C` or `case C(_)` +Note: if you intended to match against the class, try `case C(_)` case C => true ^ t4879.scala:10: error: pattern type is incompatible with expected type; found : D.type required: D[T,U,V] -Note: if you intended to match against the class, try `case _: D[_,_,_]` or `case D(_,_,_)` +Note: if you intended to match against the class, try `case D(_,_,_)` case D => true ^ two errors found diff --git a/test/files/neg/t7330.check b/test/files/neg/t7330.check new file mode 100644 index 0000000000..b96d656d2b --- /dev/null +++ b/test/files/neg/t7330.check @@ -0,0 +1,5 @@ +t7330.scala:4: error: pattern must be a value: Y[_] +Note: if you intended to match against the class, try `case _: Y[_]` + 0 match { case Y[_] => } + ^ +one error found diff --git a/test/files/neg/t7330.scala b/test/files/neg/t7330.scala new file mode 100644 index 0000000000..13a943a02b --- /dev/null +++ b/test/files/neg/t7330.scala @@ -0,0 +1,5 @@ +class Y[T] +class Test { + // TypeTree is not a valid tree for a pattern + 0 match { case Y[_] => } +}
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