From 5d0318681f8c368f04796da5dd11ee1c9fcbdbd0 Mon Sep 17 00:00:00 2001 From: Martin Odersky Date: Thu, 26 May 2016 08:51:14 +0200 Subject: Better printing of skolems They not print similar to scalac: "?x" where `x` is a unique number. Todo: An offline explanation what they are, similar to javac. I.e. ... ?3 ... where ?3: T --- src/dotty/tools/dotc/core/Types.scala | 7 +++++++ src/dotty/tools/dotc/printing/PlainPrinter.scala | 3 +-- 2 files changed, 8 insertions(+), 2 deletions(-) (limited to 'src/dotty/tools/dotc') diff --git a/src/dotty/tools/dotc/core/Types.scala b/src/dotty/tools/dotc/core/Types.scala index b26fd6373..8eae84a51 100644 --- a/src/dotty/tools/dotc/core/Types.scala +++ b/src/dotty/tools/dotc/core/Types.scala @@ -2596,6 +2596,13 @@ object Types { if (info eq this.info) this else SkolemType(info) override def hashCode: Int = identityHash override def equals(that: Any) = this eq that.asInstanceOf[AnyRef] + + private var myRepr: String = null + def repr(implicit ctx: Context) = { + if (myRepr == null) myRepr = ctx.freshName("?") + myRepr + } + override def toString = s"Skolem($info)" } diff --git a/src/dotty/tools/dotc/printing/PlainPrinter.scala b/src/dotty/tools/dotc/printing/PlainPrinter.scala index bac180efe..7053a0ea3 100644 --- a/src/dotty/tools/dotc/printing/PlainPrinter.scala +++ b/src/dotty/tools/dotc/printing/PlainPrinter.scala @@ -235,8 +235,7 @@ class PlainPrinter(_ctx: Context) extends Printer { case tp: RefinedThis => s"${nameString(tp.binder.typeSymbol)}{...}.this" case tp: SkolemType => - if (homogenizedView) toText(tp.info) - else "" + if (homogenizedView) toText(tp.info) else tp.repr } } -- cgit v1.2.3