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improve the error messages for bug #6692

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This commit is contained in:
Araq
2017-11-05 02:51:20 +01:00
parent 742f43e572
commit 3bd6b7ddc7
2 changed files with 7 additions and 6 deletions
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4
compiler/msgs.nim
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@@ -61,7 +61,7 @@ type
errBaseTypeMustBeOrdinal, errInheritanceOnlyWithNonFinalObjects,
errInheritanceOnlyWithEnums, errIllegalRecursionInTypeX,
errCannotInstantiateX, errExprHasNoAddress, errXStackEscape,
errVarForOutParamNeeded,
errVarForOutParamNeededX,
errPureTypeMismatch, errTypeMismatch, errButExpected, errButExpectedX,
errAmbiguousCallXYZ, errWrongNumberOfArguments,
errWrongNumberOfArgumentsInCall,
@@ -268,7 +268,7 @@ const
errCannotInstantiateX: "cannot instantiate: \'$1\'",
errExprHasNoAddress: "expression has no address",
errXStackEscape: "address of '$1' may not escape its stack frame",
errVarForOutParamNeeded: "for a \'var\' type a variable needs to be passed",
errVarForOutParamNeededX: "for a \'var\' type a variable needs to be passed; but '$1' is immutable",
errPureTypeMismatch: "type mismatch",
errTypeMismatch: "type mismatch: got (",
errButExpected: "but expected one of: ",

9
compiler/semexprs.nim
View File

@@ -465,7 +465,7 @@ proc newHiddenAddrTaken(c: PContext, n: PNode): PNode =
result = newNodeIT(nkHiddenAddr, n.info, makeVarType(c, n.typ))
addSon(result, n)
if isAssignable(c, n) notin {arLValue, arLocalLValue}:
localError(n.info, errVarForOutParamNeeded)
localError(n.info, errVarForOutParamNeededX, $n)
proc analyseIfAddressTaken(c: PContext, n: PNode): PNode =
result = n
@@ -509,9 +509,10 @@ proc analyseIfAddressTakenInCall(c: PContext, n: PNode) =
for i in countup(1, sonsLen(n) - 1):
if i < sonsLen(t) and t.sons[i] != nil and
skipTypes(t.sons[i], abstractInst-{tyTypeDesc}).kind == tyVar:
if isAssignable(c, n.sons[i]) notin {arLValue, arLocalLValue}:
if n.sons[i].kind != nkHiddenAddr:
localError(n.sons[i].info, errVarForOutParamNeeded)
let it = n[i]
if isAssignable(c, it) notin {arLValue, arLocalLValue}:
if it.kind != nkHiddenAddr:
localError(it.info, errVarForOutParamNeededX, $it)
return
for i in countup(1, sonsLen(n) - 1):
if n.sons[i].kind == nkHiddenCallConv: