diff options
Diffstat (limited to 'compiler/semmagic.nim')
| -rw-r--r-- | compiler/semmagic.nim | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/compiler/semmagic.nim b/compiler/semmagic.nim index 93170e530..56746ce26 100644 --- a/compiler/semmagic.nim +++ b/compiler/semmagic.nim @@ -135,6 +135,13 @@ proc isStrangeArray(t: PType): bool = let t = t.skipTypes(abstractInst) result = t.kind == tyArray and t.firstOrd != 0 +proc isNegative(n: PNode): bool = + let n = n.skipConv + if n.kind in {nkCharLit..nkUInt64Lit}: + result = n.intVal < 0 + elif n.kind in nkCallKinds and n.sons[0].kind == nkSym: + result = n.sons[0].sym.magic in {mUnaryMinusI, mUnaryMinusI64} + proc magicsAfterOverloadResolution(c: PContext, n: PNode, flags: TExprFlags): PNode = case n[0].sym.magic @@ -158,6 +165,12 @@ proc magicsAfterOverloadResolution(c: PContext, n: PNode, of mProcCall: result = n result.typ = n[1].typ + of mDotDot: + result = n + # we only need to warnings here about negative indexing: + if isNegative(n.sons[1]) or (n.len > 2 and isNegative(n.sons[2])): + message(n.info, warnDeprecated, + "use '^' instead of '-'; negative indexing") of mRoof: # error correction: result = n.sons[1] |