From c44b9931dd8aaf3789626bb377ed9e25f90c0e51 Mon Sep 17 00:00:00 2001 From: liu fengyun Date: Wed, 27 Jul 2016 13:08:47 +0200 Subject: [PATCH] more friendly error message for case trait --- src/dotty/tools/dotc/parsing/Parsers.scala | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/src/dotty/tools/dotc/parsing/Parsers.scala b/src/dotty/tools/dotc/parsing/Parsers.scala index c535c42413c5..82add4c14e5f 100644 --- a/src/dotty/tools/dotc/parsing/Parsers.scala +++ b/src/dotty/tools/dotc/parsing/Parsers.scala @@ -2046,7 +2046,10 @@ object Parsers { else if (in.token == AT || isTemplateIntro || isModifier) stats += tmplDef(in.offset, defAnnotsMods(modifierTokens)) else if (!isStatSep) { - syntaxErrorOrIncomplete("expected class or object definition") + if (in.token == CASE) + syntaxErrorOrIncomplete("only `case class` or `case object` allowed") + else + syntaxErrorOrIncomplete("expected class or object definition") if (mustStartStat) // do parse all definitions even if they are probably local (i.e. a "}" has been forgotten) defOrDcl(in.offset, defAnnotsMods(modifierTokens)) }