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compiler: better error messages (#5613)

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This commit is contained in:
Andreas Rumpf 2017-03-26 20:24:06 +02:00 • committed by GitHub
commit d02486aa48
8 changed files with 37 additions and 29 deletions
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7
compiler/semstmts.nim
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@ -160,10 +160,11 @@ proc discardCheck(c: PContext, result: PNode) =
else:
var n = result
while n.kind in skipForDiscardable: n = n.lastSon
var s = "expression '" & $n & "' is of type '" &
result.typ.typeToString & "' and has to be discarded"
if result.typ.kind == tyProc:
localError(n.info, "value of type '" & result.typ.typeToString & "' has to be discarded; for a function call use ()")
else:
localError(n.info, errDiscardValueX, result.typ.typeToString)
s.add "; for a function call use ()"
localError(n.info, s)
proc semIf(c: PContext, n: PNode): PNode =
result = n