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next steps for first class iterators

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This commit is contained in:
Araq 2012-11-15 22:54:06 +01:00
commit 7a2c11d3cf
6 changed files with 75 additions and 16 deletions
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5
compiler/semstmts.nim
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@ -406,7 +406,10 @@ proc semFor(c: PContext, n: PNode): PNode =
openScope(c.tab)
n.sons[length-2] = semExprNoDeref(c, n.sons[length-2], {efWantIterator})
var call = n.sons[length-2]
if call.kind notin nkCallKinds or call.sons[0].kind != nkSym or
if call.kind in nkCallKinds and call.sons[0].typ.callConv == ccClosure:
# first class iterator:
result = semForVars(c, n)
elif call.kind notin nkCallKinds or call.sons[0].kind != nkSym or
call.sons[0].sym.kind != skIterator:
if length == 3:
n.sons[length-2] = implicitIterator(c, "items", n.sons[length-2])