diff options
Diffstat (limited to 'src/reflect/scala/reflect/internal/TreeGen.scala')
| -rw-r--r-- | src/reflect/scala/reflect/internal/TreeGen.scala | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/src/reflect/scala/reflect/internal/TreeGen.scala b/src/reflect/scala/reflect/internal/TreeGen.scala index 373758d0a5..ade9ee84ac 100644 --- a/src/reflect/scala/reflect/internal/TreeGen.scala +++ b/src/reflect/scala/reflect/internal/TreeGen.scala @@ -899,8 +899,8 @@ abstract class TreeGen { case Ident(name) if treeInfo.isVarPattern(tree) && name != nme.WILDCARD => atPos(tree.pos) { val b = Bind(name, atPos(tree.pos.focus) (Ident(nme.WILDCARD))) - if (forFor) b updateAttachment AtBoundIdentifierAttachment - else b + if (!forFor && isPatVarWarnable) b + else b updateAttachment AtBoundIdentifierAttachment } case Typed(id @ Ident(name), tpt) if treeInfo.isVarPattern(id) && name != nme.WILDCARD => atPos(tree.pos.withPoint(id.pos.point)) { @@ -922,7 +922,13 @@ abstract class TreeGen { tree } } + + /** Can be overridden to depend on settings.warnUnusedPatvars. */ + def isPatVarWarnable: Boolean = true + + /** Not in for comprehensions, whether to warn unused pat vars depends on flag. */ object patvarTransformer extends PatvarTransformer(forFor = false) + /** Tag pat vars in for comprehensions. */ object patvarTransformerForFor extends PatvarTransformer(forFor = true) |