diff options
Diffstat (limited to 'src/dotty/tools/dotc/typer/ErrorReporting.scala')
| -rw-r--r-- | src/dotty/tools/dotc/typer/ErrorReporting.scala | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/src/dotty/tools/dotc/typer/ErrorReporting.scala b/src/dotty/tools/dotc/typer/ErrorReporting.scala index f20d25792..1f55df2bc 100644 --- a/src/dotty/tools/dotc/typer/ErrorReporting.scala +++ b/src/dotty/tools/dotc/typer/ErrorReporting.scala @@ -97,19 +97,21 @@ object ErrorReporting { errorTree(tree, typeMismatchStr(tree.tpe, pt) + implicitFailure.postscript) } + /** A subtype log explaining why `found` does not conform to `expected` */ + def whyNoMatchStr(found: Type, expected: Type) = + if (ctx.settings.explaintypes.value) + "\n" + ctx.typerState.show + "\n" + TypeComparer.explained((found <:< expected)(_)) + else + "" + def typeMismatchStr(found: Type, expected: Type) = disambiguated { implicit ctx => - val (typerStateStr, explanationStr) = - if (ctx.settings.explaintypes.value) - ("\n" + ctx.typerState.show, "\n" + TypeComparer.explained((found <:< expected)(_))) - else - ("", "") def infoStr = found match { // DEBUG case tp: TypeRef => s"with info ${tp.info} / ${tp.prefix.toString} / ${tp.prefix.dealias.toString}" case _ => "" } d"""type mismatch: | found : $found - | required: $expected""".stripMargin + typerStateStr + explanationStr + | required: $expected""".stripMargin + whyNoMatchStr(found, expected) } } |