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Support iterators returning lent T (#11938)

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* lent iterators
* rebase tests
* update changelog
* fix comments, more tests
This commit is contained in:
cooldome 2019-08-31 18:23:54 +01:00 • committed by Andreas Rumpf
commit 2b565aad89
7 changed files with 116 additions and 27 deletions
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3
compiler/transf.nim
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@ -371,8 +371,7 @@ proc transformYield(c: PTransf, n: PNode): PTransNode =
# c.transCon.forStmt.len == 3 means that there is one for loop variable
# and thus no tuple unpacking:
if e.typ.isNil: return result # can happen in nimsuggest for unknown reasons
if skipTypes(e.typ, {tyGenericInst, tyAlias, tySink}).kind == tyTuple and
c.transCon.forStmt.len != 3:
if c.transCon.forStmt.len != 3:
e = skipConv(e)
if e.kind in {nkPar, nkTupleConstr}:
for i in 0 ..< sonsLen(e):