diff options
Diffstat (limited to 'src/dotty/tools/dotc/printing/PlainPrinter.scala')
| -rw-r--r-- | src/dotty/tools/dotc/printing/PlainPrinter.scala | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/src/dotty/tools/dotc/printing/PlainPrinter.scala b/src/dotty/tools/dotc/printing/PlainPrinter.scala index 7053a0ea3..59f1608db 100644 --- a/src/dotty/tools/dotc/printing/PlainPrinter.scala +++ b/src/dotty/tools/dotc/printing/PlainPrinter.scala @@ -13,6 +13,8 @@ import scala.annotation.switch class PlainPrinter(_ctx: Context) extends Printer { protected[this] implicit def ctx: Context = _ctx.addMode(Mode.Printing) + private var openRecs: List[RecType] = Nil + protected def maxToTextRecursions = 100 protected final def controlled(op: => Text): Text = @@ -58,6 +60,8 @@ class PlainPrinter(_ctx: Context) extends Printer { } else tp + private def selfRecName(n: Int) = s"z$n" + /** Render elements alternating with `sep` string */ protected def toText(elems: Traversable[Showable], sep: String) = Text(elems map (_ toText this), sep) @@ -130,6 +134,12 @@ class PlainPrinter(_ctx: Context) extends Printer { val parent :: (refined: List[RefinedType @unchecked]) = refinementChain(tp).reverse toTextLocal(parent) ~ "{" ~ Text(refined map toTextRefinement, "; ").close ~ "}" + case tp: RecType => + try { + openRecs = tp :: openRecs + "{" ~ selfRecName(openRecs.length) ~ " => " ~ toTextGlobal(tp.parent) ~ "}" + } + finally openRecs = openRecs.tail case AndType(tp1, tp2) => changePrec(AndPrec) { toText(tp1) ~ " & " ~ toText(tp2) } case OrType(tp1, tp2) => @@ -232,6 +242,10 @@ class PlainPrinter(_ctx: Context) extends Printer { toText(value) case MethodParam(mt, idx) => nameString(mt.paramNames(idx)) + case tp: RecThis => + val idx = openRecs.reverse.indexOf(tp.binder) + if (idx >= 0) selfRecName(idx + 1) + else "{...}.this" // TODO move underlying type to an addendum, e.g. ... z3 ... where z3: ... case tp: RefinedThis => s"${nameString(tp.binder.typeSymbol)}{...}.this" case tp: SkolemType => |