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Yuriy Glukhov 2018-03-14 12:36:46 +02:00 committed by zah
parent 38e2c29926
commit eb6e359d93
1 changed files with 11 additions and 3 deletions
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14
ranges/memranges.nim
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@ -18,7 +18,15 @@ proc toMemRange*(x: string): MemRange =
result.start = x.cstring.pointer
result.size = x.len
proc toMemRange*[T](x: openarray[T]): MemRange =
result.start = cast[pointer](x)
result.size = x.len * T.sizeof
proc toMemRange*[T](x: openarray[T], fromIdx, toIdx: int): MemRange =
assert(fromIdx >= 0 and toIdx >= fromIdx and fromIdx < x.len and toIdx < x.len)
result.start = unsafeAddr x[fromIdx]
result.size = (toIdx - fromIdx + 1) * T.sizeof
proc toMemRange*[T](x: openarray[T], fromIdx: int): MemRange {.inline.} =
toMemRange(x, fromIdx, x.high)
proc toMemRange*[T](x: openarray[T]): MemRange {.inline.} =
toMemRange(x, 0, x.high)
template toMemRange*(mr: MemRange): MemRange = mr