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improvements for 'not nil' checking

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This commit is contained in:
Araq 2013-06-13 01:40:11 +02:00
commit d4c91bbd85
9 changed files with 99 additions and 27 deletions
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8
compiler/semstmts.nim
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@ -315,6 +315,13 @@ proc semIdentDef(c: PContext, n: PNode, kind: TSymKind): PSym =
result = semIdentWithPragma(c, kind, n, {})
suggestSym(n, result)
proc checkNilable(v: PSym) =
if sfGlobal in v.flags and {tfNotNil, tfNeedsInit} * v.typ.flags != {}:
if v.ast.isNil:
Message(v.info, warnProveInit, v.name.s)
elif tfNotNil in v.typ.flags and tfNotNil notin v.ast.typ.flags:
Message(v.info, warnProveInit, v.name.s)
proc semVarOrLet(c: PContext, n: PNode, symkind: TSymKind): PNode =
var b: PNode
result = copyNode(n)
@ -390,6 +397,7 @@ proc semVarOrLet(c: PContext, n: PNode, symkind: TSymKind): PNode =
else:
v.typ = tup.sons[j]
b.sons[j] = newSymNode(v)
checkNilable(v)
proc semConst(c: PContext, n: PNode): PNode =
result = copyNode(n)