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Case class must have at least one *leading* non-implicit parameter list #15382

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6 changes: 3 additions & 3 deletions compiler/src/dotty/tools/dotc/reporting/messages.scala
Original file line number Diff line number Diff line change
Expand Up @@ -2344,12 +2344,12 @@ import transform.SymUtils._
class CaseClassMissingNonImplicitParamList(cdef: untpd.TypeDef)(using Context)
extends SyntaxMsg(CaseClassMissingNonImplicitParamListID) {
def msg =
em"""|A ${hl("case class")} must have at least one non-implicit parameter list"""
em"""|A ${hl("case class")} must have at least one leading non-implicit parameter list"""

def explain =
em"""|${cdef.name} must have at least one non-implicit parameter list,
em"""|${cdef.name} must have at least one leading non-implicit parameter list,
| if you're aiming to have a case class parametrized only by implicit ones, you should
| add an explicit ${hl("()")} as a parameter list to ${cdef.name}.""".stripMargin
| add an explicit ${hl("()")} as the first parameter list to ${cdef.name}.""".stripMargin
}

class EnumerationsShouldNotBeEmpty(cdef: untpd.TypeDef)(using Context)
Expand Down