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macros: make hasCustomPragma more permissive (#19747)

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Make hasCustomPragma return false rather than fail for invalid
parameters.
This commit is contained in:
ehmry 2022-04-25 15:16:11 -05:00 • committed by GitHub
commit 82680a12a7
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1 changed files with 5 additions and 3 deletions
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8
lib/core/macros.nim
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@ -1521,7 +1521,7 @@ proc extractTypeImpl(n: NimNode): NimNode =
else: error("Invalid node to retrieve type implementation of: " & $n.kind)
proc customPragmaNode(n: NimNode): NimNode =
expectKind(n, {nnkSym, nnkDotExpr, nnkBracketExpr, nnkTypeOfExpr, nnkCheckedFieldExpr})
expectKind(n, {nnkSym, nnkDotExpr, nnkBracketExpr, nnkTypeOfExpr, nnkType, nnkCheckedFieldExpr})
let
typ = n.getTypeInst()
@ -1532,7 +1532,9 @@ proc customPragmaNode(n: NimNode): NimNode =
if kind(typ[1]) == nnkBracketExpr: typ[1][0]
else: typ[1]
)
if impl[0].kind == nnkPragmaExpr:
if impl.kind == nnkNilLit:
return impl
elif impl[0].kind == nnkPragmaExpr:
return impl[0][1]
else:
return impl[0] # handle types which don't have macro at all
@ -1560,7 +1562,7 @@ proc customPragmaNode(n: NimNode): NimNode =
while typDef != nil:
typDef.expectKind(nnkTypeDef)
let typ = typDef[2].extractTypeImpl()
typ.expectKind({nnkRefTy, nnkPtrTy, nnkObjectTy})
if typ.kind notin {nnkRefTy, nnkPtrTy, nnkObjectTy}: break
let isRef = typ.kind in {nnkRefTy, nnkPtrTy}
if isRef and typ[0].kind in {nnkSym, nnkBracketExpr}: # defines ref type for another object(e.g. X = ref X)
typDef = getImpl(typ[0])