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Merge pull request #5406 from multiversx/feat/go-v1.20.5-integration
feat/go v1.20.5 integration
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,11 @@ | ||
| package compatibility | ||
|
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| import "sort" | ||
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|
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| // Sort sorts data. | ||
| // It makes one call to data.Len to determine n and O(n*log(n)) calls to | ||
| // data.Less and data.Swap. The sort is not guaranteed to be stable. | ||
| func Sort(data sort.Interface) { | ||
| n := data.Len() | ||
| quickSort_func(data, 0, n, maxDepth(n)) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,163 @@ | ||
| package compatibility | ||
|
|
||
| type lessSwapHandler interface { | ||
| Less(i, j int) bool | ||
| Swap(i, j int) | ||
| } | ||
|
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||
| // from go implementation v1.17.6 /src/sort/zfuncversion.go L10 | ||
| func insertionSort_func(data lessSwapHandler, a, b int) { | ||
| for i := a + 1; i < b; i++ { | ||
| for j := i; j > a && data.Less(j, j-1); j-- { | ||
| data.Swap(j, j-1) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| // from go implementation v1.17.6 /src/sort/zfuncversion.go L19 | ||
| func siftDown_func(data lessSwapHandler, lo, hi, first int) { | ||
| root := lo | ||
| for { | ||
| child := 2*root + 1 | ||
| if child >= hi { | ||
| break | ||
| } | ||
| if child+1 < hi && data.Less(first+child, first+child+1) { | ||
| child++ | ||
| } | ||
| if !data.Less(first+root, first+child) { | ||
| return | ||
| } | ||
| data.Swap(first+root, first+child) | ||
| root = child | ||
| } | ||
| } | ||
|
|
||
| // from go implementation v1.17.6 /src/sort/zfuncversion.go L37 | ||
| func heapSort_func(data lessSwapHandler, a, b int) { | ||
| first := a | ||
| lo := 0 | ||
| hi := b - a | ||
| for i := (hi - 1) / 2; i >= 0; i-- { | ||
| siftDown_func(data, i, hi, first) | ||
| } | ||
| for i := hi - 1; i >= 0; i-- { | ||
| data.Swap(first, first+i) | ||
| siftDown_func(data, lo, i, first) | ||
| } | ||
| } | ||
|
|
||
| // from go implementation v1.17.6 /src/sort/zfuncversion.go L52 | ||
| func medianOfThree_func(data lessSwapHandler, m1, m0, m2 int) { | ||
| if data.Less(m1, m0) { | ||
| data.Swap(m1, m0) | ||
| } | ||
| if data.Less(m2, m1) { | ||
| data.Swap(m2, m1) | ||
| if data.Less(m1, m0) { | ||
| data.Swap(m1, m0) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| // from go implementation v1.17.6 /src/sort/zfuncversion.go L72 | ||
| func doPivot_func(data lessSwapHandler, lo, hi int) (midlo, midhi int) { | ||
| m := int(uint(lo+hi) >> 1) | ||
| if hi-lo > 40 { | ||
| s := (hi - lo) / 8 | ||
| medianOfThree_func(data, lo, lo+s, lo+2*s) | ||
| medianOfThree_func(data, m, m-s, m+s) | ||
| medianOfThree_func(data, hi-1, hi-1-s, hi-1-2*s) | ||
| } | ||
| medianOfThree_func(data, lo, m, hi-1) | ||
| pivot := lo | ||
| a, c := lo+1, hi-1 | ||
| for ; a < c && data.Less(a, pivot); a++ { | ||
| } | ||
| b := a | ||
| for { | ||
| for ; b < c && !data.Less(pivot, b); b++ { | ||
| } | ||
| for ; b < c && data.Less(pivot, c-1); c-- { | ||
| } | ||
| if b >= c { | ||
| break | ||
| } | ||
| data.Swap(b, c-1) | ||
| b++ | ||
| c-- | ||
| } | ||
| protect := hi-c < 5 | ||
| if !protect && hi-c < (hi-lo)/4 { | ||
| dups := 0 | ||
| if !data.Less(pivot, hi-1) { | ||
| data.Swap(c, hi-1) | ||
| c++ | ||
| dups++ | ||
| } | ||
| if !data.Less(b-1, pivot) { | ||
| b-- | ||
| dups++ | ||
| } | ||
| if !data.Less(m, pivot) { | ||
| data.Swap(m, b-1) | ||
| b-- | ||
| dups++ | ||
| } | ||
| protect = dups > 1 | ||
| } | ||
| if protect { | ||
| for { | ||
| for ; a < b && !data.Less(b-1, pivot); b-- { | ||
| } | ||
| for ; a < b && data.Less(a, pivot); a++ { | ||
| } | ||
| if a >= b { | ||
| break | ||
| } | ||
| data.Swap(a, b-1) | ||
| a++ | ||
| b-- | ||
| } | ||
| } | ||
| data.Swap(pivot, b-1) | ||
| return b - 1, c | ||
| } | ||
|
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| // from go implementation v1.17.6 /src/sort/zfuncversion.go L136 | ||
| func quickSort_func(data lessSwapHandler, a, b, maxDepth int) { | ||
| for b-a > 12 { | ||
| if maxDepth == 0 { | ||
| heapSort_func(data, a, b) | ||
| return | ||
| } | ||
| maxDepth-- | ||
| mlo, mhi := doPivot_func(data, a, b) | ||
| if mlo-a < b-mhi { | ||
| quickSort_func(data, a, mlo, maxDepth) | ||
| a = mhi | ||
| } else { | ||
| quickSort_func(data, mhi, b, maxDepth) | ||
| b = mlo | ||
| } | ||
| } | ||
| if b-a > 1 { | ||
| for i := a + 6; i < b; i++ { | ||
| if data.Less(i, i-6) { | ||
| data.Swap(i, i-6) | ||
| } | ||
| } | ||
| insertionSort_func(data, a, b) | ||
| } | ||
| } | ||
|
|
||
| // maxDepth returns a threshold at which quicksort should switch | ||
| // to heapsort. It returns 2*ceil(lg(n+1)). | ||
| // from go implementation v1.17.6 /src/sort/sort.go L236 | ||
| func maxDepth(n int) int { | ||
| var depth int | ||
| for i := n; i > 0; i >>= 1 { | ||
| depth++ | ||
| } | ||
| return depth * 2 | ||
| } |
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