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Diffstat (limited to 'src/dotty/tools/dotc/typer/Checking.scala')
| -rw-r--r-- | src/dotty/tools/dotc/typer/Checking.scala | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/dotty/tools/dotc/typer/Checking.scala b/src/dotty/tools/dotc/typer/Checking.scala index 6ded7c109..3e829eb50 100644 --- a/src/dotty/tools/dotc/typer/Checking.scala +++ b/src/dotty/tools/dotc/typer/Checking.scala @@ -48,6 +48,18 @@ object Checking { def checkBounds(args: List[tpd.Tree], poly: PolyType)(implicit ctx: Context): Unit = checkBounds(args, poly.paramBounds, _.substParams(poly, _)) + /** Check all AppliedTypeTree nodes in this tree for legal bounds */ + val boundsChecker = new TreeTraverser { + def traverse(tree: Tree)(implicit ctx: Context) = tree match { + case AppliedTypeTree(tycon, args) => + val tparams = tycon.tpe.typeSymbol.typeParams + val bounds = tparams.map(tparam => + tparam.info.asSeenFrom(tycon.tpe.normalizedPrefix, tparam.owner.owner).bounds) + checkBounds(args, bounds, _.substDealias(tparams, _)) + case _ => traverseChildren(tree) + } + } + /** Check that `tp` refers to a nonAbstract class * and that the instance conforms to the self type of the created class. */ |