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parsesql: better 'len' operation; added '[]' access

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This commit is contained in:
Andreas Rumpf 2017-09-05 08:48:51 +02:00
commit b880359e84
1 changed files with 7 additions and 2 deletions
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9
lib/pure/parsesql.nim
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@ -566,8 +566,13 @@ proc newNode(k: SqlNodeKind, s: string): SqlNode =
result.strVal = s result.strVal = s
proc len*(n: SqlNode): int = proc len*(n: SqlNode): int =
if isNil(n.sons): result = 0 if n.kind in {nkIdent, nkStringLit, nkBitStringLit, nkHexStringLit,
else: result = n.sons.len nkIntegerLit, nkNumericLit}:
result = 0
else:
result = n.sons.len
proc `[]`*(n: SqlNode; i: int): SqlNode = n.sons[i]
proc add*(father, n: SqlNode) = proc add*(father, n: SqlNode) =
if isNil(father.sons): father.sons = @[] if isNil(father.sons): father.sons = @[]