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hashes: implement murmur3 (#12022)

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* hashes: implement murmur3
* refactoring; there is only one murmurHash and it works at compile-time via VM hooks
* fixes JS tests
* makes toOpenArrayByte work with C++
* make it bootstrap in C++ mode for 0.20
This commit is contained in:
Miran 2019-09-01 00:04:10 +02:00 • committed by Andreas Rumpf
commit ab48d7901e
7 changed files with 204 additions and 59 deletions
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lib/system.nim
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@ -4501,6 +4501,11 @@ when defined(nimconfig):
when not defined(js):
proc toOpenArray*[T](x: ptr UncheckedArray[T]; first, last: int): openArray[T] {.
magic: "Slice".}
when defined(nimToOpenArrayCString):
proc toOpenArray*(x: cstring; first, last: int): openArray[char] {.
magic: "Slice".}
proc toOpenArrayByte*(x: cstring; first, last: int): openArray[byte] {.
magic: "Slice".}
proc toOpenArray*[T](x: seq[T]; first, last: int): openArray[T] {.
magic: "Slice".}
@ -4510,8 +4515,13 @@ proc toOpenArray*[I, T](x: array[I, T]; first, last: I): openArray[T] {.
magic: "Slice".}
proc toOpenArray*(x: string; first, last: int): openArray[char] {.
magic: "Slice".}
proc toOpenArrayByte*(x: string; first, last: int): openArray[byte] {.
magic: "Slice".}
proc toOpenArrayByte*(x: openArray[char]; first, last: int): openArray[byte] {.
magic: "Slice".}
proc toOpenArrayByte*(x: seq[char]; first, last: int): openArray[byte] {.
magic: "Slice".}
type
ForLoopStmt* {.compilerproc.} = object ## \