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allows a destructor to be attached to a tyString/tySequence

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This commit is contained in:
Andreas Rumpf 2018-07-27 18:20:13 +02:00
commit ef4b755183
4 changed files with 28 additions and 17 deletions
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12
lib/core/seqs.nim
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@ -34,7 +34,8 @@ when false:
proc `=trace`[T](s: NimSeqV2[T]) =
for i in 0 ..< s.len: `=trace`(s.data[i])
proc `=destroy`[T](x: var NimSeqV2[T]) =
proc `=destroy`[T](s: var seq[T]) =
var x = cast[ptr NimSeqV2[T]](addr s)
var p = x.p
if p != nil:
when not supportsCopyMem(T):
@ -43,7 +44,10 @@ proc `=destroy`[T](x: var NimSeqV2[T]) =
x.p = nil
x.len = 0
proc `=`[T](a: var NimSeqV2[T]; b: NimSeqV2[T]) =
proc `=`[T](x: var seq[T]; y: seq[T]) =
var a = cast[ptr NimSeqV2[T]](addr x)
var b = cast[ptr NimSeqV2[T]](unsafeAddr y)
if a.p == b.p: return
`=destroy`(a)
a.len = b.len
@ -56,7 +60,9 @@ proc `=`[T](a: var NimSeqV2[T]; b: NimSeqV2[T]) =
for i in 0..<a.len:
a.p.data[i] = b.p.data[i]
proc `=sink`[T](a: var NimSeqV2[T]; b: NimSeqV2[T]) =
proc `=sink`[T](x: var seq[T]; y: seq[T]) =
var a = cast[ptr NimSeqV2[T]](addr x)
var b = cast[ptr NimSeqV2[T]](unsafeAddr y)
if a.p != nil and a.p != b.p:
`=destroy`(a)
a.len = b.len