From fee28482fa7ff3bac67ef60cbcb9474e60eb10ca Mon Sep 17 00:00:00 2001 From: Achilleas Koutsou Date: Fri, 9 Aug 2024 13:40:07 +0200 Subject: [PATCH] go.mod: replace golang.org/x/exp/slices with slices Since we updated the go version to 1.21, we can use the stdlib slices package, instead of the x/exp version of it. --- go.mod | 2 +- internal/otkdisk/partition.go | 2 +- pkg/cloud/awscloud/awscloud.go | 3 +- pkg/disk/disk.go | 3 +- pkg/distro/distro_test.go | 3 +- pkg/distro/fedora/imagetype.go | 3 +- pkg/distro/rhel/imagetype.go | 2 +- pkg/distro/rhel/rhel10/options.go | 2 +- pkg/distro/rhel/rhel8/options.go | 2 +- pkg/distro/rhel/rhel9/options.go | 2 +- pkg/osbuild/anaconda_stage.go | 3 +- .../bootc_install_to_filesystem_stage.go | 3 +- pkg/osbuild/cloud_init_stage.go | 2 +- pkg/osbuild/rpm_stage.go | 3 +- .../x/exp/constraints/constraints.go | 50 -- vendor/golang.org/x/exp/slices/cmp.go | 44 -- vendor/golang.org/x/exp/slices/slices.go | 515 ------------------ vendor/golang.org/x/exp/slices/sort.go | 197 ------- .../golang.org/x/exp/slices/zsortanyfunc.go | 479 ---------------- .../golang.org/x/exp/slices/zsortordered.go | 481 ---------------- vendor/modules.txt | 2 - 21 files changed, 21 insertions(+), 1782 deletions(-) delete mode 100644 vendor/golang.org/x/exp/constraints/constraints.go delete mode 100644 vendor/golang.org/x/exp/slices/cmp.go delete mode 100644 vendor/golang.org/x/exp/slices/slices.go delete mode 100644 vendor/golang.org/x/exp/slices/sort.go delete mode 100644 vendor/golang.org/x/exp/slices/zsortanyfunc.go delete mode 100644 vendor/golang.org/x/exp/slices/zsortordered.go diff --git a/go.mod b/go.mod index 629ec73b2c..55ebef3c95 100644 --- a/go.mod +++ b/go.mod @@ -32,7 +32,6 @@ require ( github.com/stretchr/testify v1.9.0 github.com/ubccr/kerby v0.0.0-20170626144437-201a958fc453 github.com/vmware/govmomi v0.39.0 - golang.org/x/exp v0.0.0-20240613232115-7f521ea00fb8 golang.org/x/oauth2 v0.22.0 golang.org/x/sys v0.24.0 golang.org/x/tools v0.24.0 @@ -154,6 +153,7 @@ require ( go.opentelemetry.io/otel/metric v1.24.0 // indirect go.opentelemetry.io/otel/trace v1.24.0 // indirect golang.org/x/crypto v0.26.0 // indirect + golang.org/x/exp v0.0.0-20240613232115-7f521ea00fb8 // indirect golang.org/x/mod v0.20.0 // indirect golang.org/x/net v0.28.0 // indirect golang.org/x/sync v0.8.0 // indirect diff --git a/internal/otkdisk/partition.go b/internal/otkdisk/partition.go index 37b649c5cf..151884c52f 100644 --- a/internal/otkdisk/partition.go +++ b/internal/otkdisk/partition.go @@ -3,7 +3,7 @@ package otkdisk import ( "fmt" - "golang.org/x/exp/slices" + "slices" "github.com/osbuild/images/pkg/disk" ) diff --git a/pkg/cloud/awscloud/awscloud.go b/pkg/cloud/awscloud/awscloud.go index 93ca55c60b..b004963388 100644 --- a/pkg/cloud/awscloud/awscloud.go +++ b/pkg/cloud/awscloud/awscloud.go @@ -9,6 +9,8 @@ import ( "os" "time" + "slices" + "github.com/aws/aws-sdk-go/aws" "github.com/aws/aws-sdk-go/aws/credentials" "github.com/aws/aws-sdk-go/aws/request" @@ -17,7 +19,6 @@ import ( "github.com/aws/aws-sdk-go/service/s3" "github.com/aws/aws-sdk-go/service/s3/s3manager" "github.com/sirupsen/logrus" - "golang.org/x/exp/slices" ) type AWS struct { diff --git a/pkg/disk/disk.go b/pkg/disk/disk.go index 3c57026871..2e64d98416 100644 --- a/pkg/disk/disk.go +++ b/pkg/disk/disk.go @@ -24,8 +24,9 @@ import ( "reflect" "strings" + "slices" + "github.com/google/uuid" - "golang.org/x/exp/slices" ) const ( diff --git a/pkg/distro/distro_test.go b/pkg/distro/distro_test.go index 631810f944..56cc771c30 100644 --- a/pkg/distro/distro_test.go +++ b/pkg/distro/distro_test.go @@ -7,6 +7,8 @@ import ( "strings" "testing" + "slices" + "github.com/osbuild/images/internal/common" "github.com/osbuild/images/pkg/blueprint" "github.com/osbuild/images/pkg/container" @@ -17,7 +19,6 @@ import ( "github.com/osbuild/images/pkg/rpmmd" "github.com/stretchr/testify/assert" "github.com/stretchr/testify/require" - "golang.org/x/exp/slices" ) // Ensure that all package sets defined in the package set chains are defined for the image type diff --git a/pkg/distro/fedora/imagetype.go b/pkg/distro/fedora/imagetype.go index ba1cc926cb..1300b5747f 100644 --- a/pkg/distro/fedora/imagetype.go +++ b/pkg/distro/fedora/imagetype.go @@ -5,6 +5,8 @@ import ( "math/rand" "strings" + "slices" + "github.com/osbuild/images/internal/common" "github.com/osbuild/images/internal/environment" "github.com/osbuild/images/internal/workload" @@ -18,7 +20,6 @@ import ( "github.com/osbuild/images/pkg/platform" "github.com/osbuild/images/pkg/policies" "github.com/osbuild/images/pkg/rpmmd" - "golang.org/x/exp/slices" ) type imageFunc func(workload workload.Workload, t *imageType, bp *blueprint.Blueprint, options distro.ImageOptions, packageSets map[string]rpmmd.PackageSet, containers []container.SourceSpec, rng *rand.Rand) (image.ImageKind, error) diff --git a/pkg/distro/rhel/imagetype.go b/pkg/distro/rhel/imagetype.go index a70269ae73..0c055c96a6 100644 --- a/pkg/distro/rhel/imagetype.go +++ b/pkg/distro/rhel/imagetype.go @@ -4,7 +4,7 @@ import ( "fmt" "math/rand" - "golang.org/x/exp/slices" + "slices" "github.com/osbuild/images/internal/common" "github.com/osbuild/images/internal/environment" diff --git a/pkg/distro/rhel/rhel10/options.go b/pkg/distro/rhel/rhel10/options.go index 136f6dcaf7..30ab780d08 100644 --- a/pkg/distro/rhel/rhel10/options.go +++ b/pkg/distro/rhel/rhel10/options.go @@ -4,7 +4,7 @@ import ( "fmt" "log" - "golang.org/x/exp/slices" + "slices" "github.com/osbuild/images/internal/common" "github.com/osbuild/images/pkg/blueprint" diff --git a/pkg/distro/rhel/rhel8/options.go b/pkg/distro/rhel/rhel8/options.go index 81610c0640..f6cba40e51 100644 --- a/pkg/distro/rhel/rhel8/options.go +++ b/pkg/distro/rhel/rhel8/options.go @@ -5,7 +5,7 @@ import ( "log" "strings" - "golang.org/x/exp/slices" + "slices" "github.com/osbuild/images/internal/common" "github.com/osbuild/images/pkg/blueprint" diff --git a/pkg/distro/rhel/rhel9/options.go b/pkg/distro/rhel/rhel9/options.go index 859e3ebcb1..da45d7bd5f 100644 --- a/pkg/distro/rhel/rhel9/options.go +++ b/pkg/distro/rhel/rhel9/options.go @@ -5,7 +5,7 @@ import ( "log" "strings" - "golang.org/x/exp/slices" + "slices" "github.com/osbuild/images/internal/common" "github.com/osbuild/images/pkg/blueprint" diff --git a/pkg/osbuild/anaconda_stage.go b/pkg/osbuild/anaconda_stage.go index c6508085f0..36fcd29e8f 100644 --- a/pkg/osbuild/anaconda_stage.go +++ b/pkg/osbuild/anaconda_stage.go @@ -1,8 +1,9 @@ package osbuild import ( + "slices" + "github.com/osbuild/images/pkg/customizations/anaconda" - "golang.org/x/exp/slices" ) type AnacondaStageOptions struct { diff --git a/pkg/osbuild/bootc_install_to_filesystem_stage.go b/pkg/osbuild/bootc_install_to_filesystem_stage.go index e37916c6f2..d992a1d221 100644 --- a/pkg/osbuild/bootc_install_to_filesystem_stage.go +++ b/pkg/osbuild/bootc_install_to_filesystem_stage.go @@ -3,8 +3,9 @@ package osbuild import ( "fmt" + "slices" + "github.com/osbuild/images/pkg/platform" - "golang.org/x/exp/slices" ) type BootcInstallToFilesystemOptions struct { diff --git a/pkg/osbuild/cloud_init_stage.go b/pkg/osbuild/cloud_init_stage.go index f294f91d76..5be615dd5f 100644 --- a/pkg/osbuild/cloud_init_stage.go +++ b/pkg/osbuild/cloud_init_stage.go @@ -3,7 +3,7 @@ package osbuild import ( "fmt" - "golang.org/x/exp/slices" + "slices" ) type CloudInitStageOptions struct { diff --git a/pkg/osbuild/rpm_stage.go b/pkg/osbuild/rpm_stage.go index 77e600dd8e..5dfa78fc32 100644 --- a/pkg/osbuild/rpm_stage.go +++ b/pkg/osbuild/rpm_stage.go @@ -1,8 +1,9 @@ package osbuild import ( + "slices" + "github.com/osbuild/images/pkg/rpmmd" - "golang.org/x/exp/slices" ) type RPMStageOptions struct { diff --git a/vendor/golang.org/x/exp/constraints/constraints.go b/vendor/golang.org/x/exp/constraints/constraints.go deleted file mode 100644 index 2c033dff47..0000000000 --- a/vendor/golang.org/x/exp/constraints/constraints.go +++ /dev/null @@ -1,50 +0,0 @@ -// Copyright 2021 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Package constraints defines a set of useful constraints to be used -// with type parameters. -package constraints - -// Signed is a constraint that permits any signed integer type. -// If future releases of Go add new predeclared signed integer types, -// this constraint will be modified to include them. -type Signed interface { - ~int | ~int8 | ~int16 | ~int32 | ~int64 -} - -// Unsigned is a constraint that permits any unsigned integer type. -// If future releases of Go add new predeclared unsigned integer types, -// this constraint will be modified to include them. -type Unsigned interface { - ~uint | ~uint8 | ~uint16 | ~uint32 | ~uint64 | ~uintptr -} - -// Integer is a constraint that permits any integer type. -// If future releases of Go add new predeclared integer types, -// this constraint will be modified to include them. -type Integer interface { - Signed | Unsigned -} - -// Float is a constraint that permits any floating-point type. -// If future releases of Go add new predeclared floating-point types, -// this constraint will be modified to include them. -type Float interface { - ~float32 | ~float64 -} - -// Complex is a constraint that permits any complex numeric type. -// If future releases of Go add new predeclared complex numeric types, -// this constraint will be modified to include them. -type Complex interface { - ~complex64 | ~complex128 -} - -// Ordered is a constraint that permits any ordered type: any type -// that supports the operators < <= >= >. -// If future releases of Go add new ordered types, -// this constraint will be modified to include them. -type Ordered interface { - Integer | Float | ~string -} diff --git a/vendor/golang.org/x/exp/slices/cmp.go b/vendor/golang.org/x/exp/slices/cmp.go deleted file mode 100644 index fbf1934a06..0000000000 --- a/vendor/golang.org/x/exp/slices/cmp.go +++ /dev/null @@ -1,44 +0,0 @@ -// Copyright 2023 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package slices - -import "golang.org/x/exp/constraints" - -// min is a version of the predeclared function from the Go 1.21 release. -func min[T constraints.Ordered](a, b T) T { - if a < b || isNaN(a) { - return a - } - return b -} - -// max is a version of the predeclared function from the Go 1.21 release. -func max[T constraints.Ordered](a, b T) T { - if a > b || isNaN(a) { - return a - } - return b -} - -// cmpLess is a copy of cmp.Less from the Go 1.21 release. -func cmpLess[T constraints.Ordered](x, y T) bool { - return (isNaN(x) && !isNaN(y)) || x < y -} - -// cmpCompare is a copy of cmp.Compare from the Go 1.21 release. -func cmpCompare[T constraints.Ordered](x, y T) int { - xNaN := isNaN(x) - yNaN := isNaN(y) - if xNaN && yNaN { - return 0 - } - if xNaN || x < y { - return -1 - } - if yNaN || x > y { - return +1 - } - return 0 -} diff --git a/vendor/golang.org/x/exp/slices/slices.go b/vendor/golang.org/x/exp/slices/slices.go deleted file mode 100644 index 46ceac3439..0000000000 --- a/vendor/golang.org/x/exp/slices/slices.go +++ /dev/null @@ -1,515 +0,0 @@ -// Copyright 2021 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// Package slices defines various functions useful with slices of any type. -package slices - -import ( - "unsafe" - - "golang.org/x/exp/constraints" -) - -// Equal reports whether two slices are equal: the same length and all -// elements equal. If the lengths are different, Equal returns false. -// Otherwise, the elements are compared in increasing index order, and the -// comparison stops at the first unequal pair. -// Floating point NaNs are not considered equal. -func Equal[S ~[]E, E comparable](s1, s2 S) bool { - if len(s1) != len(s2) { - return false - } - for i := range s1 { - if s1[i] != s2[i] { - return false - } - } - return true -} - -// EqualFunc reports whether two slices are equal using an equality -// function on each pair of elements. If the lengths are different, -// EqualFunc returns false. Otherwise, the elements are compared in -// increasing index order, and the comparison stops at the first index -// for which eq returns false. -func EqualFunc[S1 ~[]E1, S2 ~[]E2, E1, E2 any](s1 S1, s2 S2, eq func(E1, E2) bool) bool { - if len(s1) != len(s2) { - return false - } - for i, v1 := range s1 { - v2 := s2[i] - if !eq(v1, v2) { - return false - } - } - return true -} - -// Compare compares the elements of s1 and s2, using [cmp.Compare] on each pair -// of elements. The elements are compared sequentially, starting at index 0, -// until one element is not equal to the other. -// The result of comparing the first non-matching elements is returned. -// If both slices are equal until one of them ends, the shorter slice is -// considered less than the longer one. -// The result is 0 if s1 == s2, -1 if s1 < s2, and +1 if s1 > s2. -func Compare[S ~[]E, E constraints.Ordered](s1, s2 S) int { - for i, v1 := range s1 { - if i >= len(s2) { - return +1 - } - v2 := s2[i] - if c := cmpCompare(v1, v2); c != 0 { - return c - } - } - if len(s1) < len(s2) { - return -1 - } - return 0 -} - -// CompareFunc is like [Compare] but uses a custom comparison function on each -// pair of elements. -// The result is the first non-zero result of cmp; if cmp always -// returns 0 the result is 0 if len(s1) == len(s2), -1 if len(s1) < len(s2), -// and +1 if len(s1) > len(s2). -func CompareFunc[S1 ~[]E1, S2 ~[]E2, E1, E2 any](s1 S1, s2 S2, cmp func(E1, E2) int) int { - for i, v1 := range s1 { - if i >= len(s2) { - return +1 - } - v2 := s2[i] - if c := cmp(v1, v2); c != 0 { - return c - } - } - if len(s1) < len(s2) { - return -1 - } - return 0 -} - -// Index returns the index of the first occurrence of v in s, -// or -1 if not present. -func Index[S ~[]E, E comparable](s S, v E) int { - for i := range s { - if v == s[i] { - return i - } - } - return -1 -} - -// IndexFunc returns the first index i satisfying f(s[i]), -// or -1 if none do. -func IndexFunc[S ~[]E, E any](s S, f func(E) bool) int { - for i := range s { - if f(s[i]) { - return i - } - } - return -1 -} - -// Contains reports whether v is present in s. -func Contains[S ~[]E, E comparable](s S, v E) bool { - return Index(s, v) >= 0 -} - -// ContainsFunc reports whether at least one -// element e of s satisfies f(e). -func ContainsFunc[S ~[]E, E any](s S, f func(E) bool) bool { - return IndexFunc(s, f) >= 0 -} - -// Insert inserts the values v... into s at index i, -// returning the modified slice. -// The elements at s[i:] are shifted up to make room. -// In the returned slice r, r[i] == v[0], -// and r[i+len(v)] == value originally at r[i]. -// Insert panics if i is out of range. -// This function is O(len(s) + len(v)). -func Insert[S ~[]E, E any](s S, i int, v ...E) S { - m := len(v) - if m == 0 { - return s - } - n := len(s) - if i == n { - return append(s, v...) - } - if n+m > cap(s) { - // Use append rather than make so that we bump the size of - // the slice up to the next storage class. - // This is what Grow does but we don't call Grow because - // that might copy the values twice. - s2 := append(s[:i], make(S, n+m-i)...) - copy(s2[i:], v) - copy(s2[i+m:], s[i:]) - return s2 - } - s = s[:n+m] - - // before: - // s: aaaaaaaabbbbccccccccdddd - // ^ ^ ^ ^ - // i i+m n n+m - // after: - // s: aaaaaaaavvvvbbbbcccccccc - // ^ ^ ^ ^ - // i i+m n n+m - // - // a are the values that don't move in s. - // v are the values copied in from v. - // b and c are the values from s that are shifted up in index. - // d are the values that get overwritten, never to be seen again. - - if !overlaps(v, s[i+m:]) { - // Easy case - v does not overlap either the c or d regions. - // (It might be in some of a or b, or elsewhere entirely.) - // The data we copy up doesn't write to v at all, so just do it. - - copy(s[i+m:], s[i:]) - - // Now we have - // s: aaaaaaaabbbbbbbbcccccccc - // ^ ^ ^ ^ - // i i+m n n+m - // Note the b values are duplicated. - - copy(s[i:], v) - - // Now we have - // s: aaaaaaaavvvvbbbbcccccccc - // ^ ^ ^ ^ - // i i+m n n+m - // That's the result we want. - return s - } - - // The hard case - v overlaps c or d. We can't just shift up - // the data because we'd move or clobber the values we're trying - // to insert. - // So instead, write v on top of d, then rotate. - copy(s[n:], v) - - // Now we have - // s: aaaaaaaabbbbccccccccvvvv - // ^ ^ ^ ^ - // i i+m n n+m - - rotateRight(s[i:], m) - - // Now we have - // s: aaaaaaaavvvvbbbbcccccccc - // ^ ^ ^ ^ - // i i+m n n+m - // That's the result we want. - return s -} - -// clearSlice sets all elements up to the length of s to the zero value of E. -// We may use the builtin clear func instead, and remove clearSlice, when upgrading -// to Go 1.21+. -func clearSlice[S ~[]E, E any](s S) { - var zero E - for i := range s { - s[i] = zero - } -} - -// Delete removes the elements s[i:j] from s, returning the modified slice. -// Delete panics if j > len(s) or s[i:j] is not a valid slice of s. -// Delete is O(len(s)-i), so if many items must be deleted, it is better to -// make a single call deleting them all together than to delete one at a time. -// Delete zeroes the elements s[len(s)-(j-i):len(s)]. -func Delete[S ~[]E, E any](s S, i, j int) S { - _ = s[i:j:len(s)] // bounds check - - if i == j { - return s - } - - oldlen := len(s) - s = append(s[:i], s[j:]...) - clearSlice(s[len(s):oldlen]) // zero/nil out the obsolete elements, for GC - return s -} - -// DeleteFunc removes any elements from s for which del returns true, -// returning the modified slice. -// DeleteFunc zeroes the elements between the new length and the original length. -func DeleteFunc[S ~[]E, E any](s S, del func(E) bool) S { - i := IndexFunc(s, del) - if i == -1 { - return s - } - // Don't start copying elements until we find one to delete. - for j := i + 1; j < len(s); j++ { - if v := s[j]; !del(v) { - s[i] = v - i++ - } - } - clearSlice(s[i:]) // zero/nil out the obsolete elements, for GC - return s[:i] -} - -// Replace replaces the elements s[i:j] by the given v, and returns the -// modified slice. Replace panics if s[i:j] is not a valid slice of s. -// When len(v) < (j-i), Replace zeroes the elements between the new length and the original length. -func Replace[S ~[]E, E any](s S, i, j int, v ...E) S { - _ = s[i:j] // verify that i:j is a valid subslice - - if i == j { - return Insert(s, i, v...) - } - if j == len(s) { - return append(s[:i], v...) - } - - tot := len(s[:i]) + len(v) + len(s[j:]) - if tot > cap(s) { - // Too big to fit, allocate and copy over. - s2 := append(s[:i], make(S, tot-i)...) // See Insert - copy(s2[i:], v) - copy(s2[i+len(v):], s[j:]) - return s2 - } - - r := s[:tot] - - if i+len(v) <= j { - // Easy, as v fits in the deleted portion. - copy(r[i:], v) - if i+len(v) != j { - copy(r[i+len(v):], s[j:]) - } - clearSlice(s[tot:]) // zero/nil out the obsolete elements, for GC - return r - } - - // We are expanding (v is bigger than j-i). - // The situation is something like this: - // (example has i=4,j=8,len(s)=16,len(v)=6) - // s: aaaaxxxxbbbbbbbbyy - // ^ ^ ^ ^ - // i j len(s) tot - // a: prefix of s - // x: deleted range - // b: more of s - // y: area to expand into - - if !overlaps(r[i+len(v):], v) { - // Easy, as v is not clobbered by the first copy. - copy(r[i+len(v):], s[j:]) - copy(r[i:], v) - return r - } - - // This is a situation where we don't have a single place to which - // we can copy v. Parts of it need to go to two different places. - // We want to copy the prefix of v into y and the suffix into x, then - // rotate |y| spots to the right. - // - // v[2:] v[:2] - // | | - // s: aaaavvvvbbbbbbbbvv - // ^ ^ ^ ^ - // i j len(s) tot - // - // If either of those two destinations don't alias v, then we're good. - y := len(v) - (j - i) // length of y portion - - if !overlaps(r[i:j], v) { - copy(r[i:j], v[y:]) - copy(r[len(s):], v[:y]) - rotateRight(r[i:], y) - return r - } - if !overlaps(r[len(s):], v) { - copy(r[len(s):], v[:y]) - copy(r[i:j], v[y:]) - rotateRight(r[i:], y) - return r - } - - // Now we know that v overlaps both x and y. - // That means that the entirety of b is *inside* v. - // So we don't need to preserve b at all; instead we - // can copy v first, then copy the b part of v out of - // v to the right destination. - k := startIdx(v, s[j:]) - copy(r[i:], v) - copy(r[i+len(v):], r[i+k:]) - return r -} - -// Clone returns a copy of the slice. -// The elements are copied using assignment, so this is a shallow clone. -func Clone[S ~[]E, E any](s S) S { - // Preserve nil in case it matters. - if s == nil { - return nil - } - return append(S([]E{}), s...) -} - -// Compact replaces consecutive runs of equal elements with a single copy. -// This is like the uniq command found on Unix. -// Compact modifies the contents of the slice s and returns the modified slice, -// which may have a smaller length. -// Compact zeroes the elements between the new length and the original length. -func Compact[S ~[]E, E comparable](s S) S { - if len(s) < 2 { - return s - } - i := 1 - for k := 1; k < len(s); k++ { - if s[k] != s[k-1] { - if i != k { - s[i] = s[k] - } - i++ - } - } - clearSlice(s[i:]) // zero/nil out the obsolete elements, for GC - return s[:i] -} - -// CompactFunc is like [Compact] but uses an equality function to compare elements. -// For runs of elements that compare equal, CompactFunc keeps the first one. -// CompactFunc zeroes the elements between the new length and the original length. -func CompactFunc[S ~[]E, E any](s S, eq func(E, E) bool) S { - if len(s) < 2 { - return s - } - i := 1 - for k := 1; k < len(s); k++ { - if !eq(s[k], s[k-1]) { - if i != k { - s[i] = s[k] - } - i++ - } - } - clearSlice(s[i:]) // zero/nil out the obsolete elements, for GC - return s[:i] -} - -// Grow increases the slice's capacity, if necessary, to guarantee space for -// another n elements. After Grow(n), at least n elements can be appended -// to the slice without another allocation. If n is negative or too large to -// allocate the memory, Grow panics. -func Grow[S ~[]E, E any](s S, n int) S { - if n < 0 { - panic("cannot be negative") - } - if n -= cap(s) - len(s); n > 0 { - // TODO(https://go.dev/issue/53888): Make using []E instead of S - // to workaround a compiler bug where the runtime.growslice optimization - // does not take effect. Revert when the compiler is fixed. - s = append([]E(s)[:cap(s)], make([]E, n)...)[:len(s)] - } - return s -} - -// Clip removes unused capacity from the slice, returning s[:len(s):len(s)]. -func Clip[S ~[]E, E any](s S) S { - return s[:len(s):len(s)] -} - -// Rotation algorithm explanation: -// -// rotate left by 2 -// start with -// 0123456789 -// split up like this -// 01 234567 89 -// swap first 2 and last 2 -// 89 234567 01 -// join first parts -// 89234567 01 -// recursively rotate first left part by 2 -// 23456789 01 -// join at the end -// 2345678901 -// -// rotate left by 8 -// start with -// 0123456789 -// split up like this -// 01 234567 89 -// swap first 2 and last 2 -// 89 234567 01 -// join last parts -// 89 23456701 -// recursively rotate second part left by 6 -// 89 01234567 -// join at the end -// 8901234567 - -// TODO: There are other rotate algorithms. -// This algorithm has the desirable property that it moves each element exactly twice. -// The triple-reverse algorithm is simpler and more cache friendly, but takes more writes. -// The follow-cycles algorithm can be 1-write but it is not very cache friendly. - -// rotateLeft rotates b left by n spaces. -// s_final[i] = s_orig[i+r], wrapping around. -func rotateLeft[E any](s []E, r int) { - for r != 0 && r != len(s) { - if r*2 <= len(s) { - swap(s[:r], s[len(s)-r:]) - s = s[:len(s)-r] - } else { - swap(s[:len(s)-r], s[r:]) - s, r = s[len(s)-r:], r*2-len(s) - } - } -} -func rotateRight[E any](s []E, r int) { - rotateLeft(s, len(s)-r) -} - -// swap swaps the contents of x and y. x and y must be equal length and disjoint. -func swap[E any](x, y []E) { - for i := 0; i < len(x); i++ { - x[i], y[i] = y[i], x[i] - } -} - -// overlaps reports whether the memory ranges a[0:len(a)] and b[0:len(b)] overlap. -func overlaps[E any](a, b []E) bool { - if len(a) == 0 || len(b) == 0 { - return false - } - elemSize := unsafe.Sizeof(a[0]) - if elemSize == 0 { - return false - } - // TODO: use a runtime/unsafe facility once one becomes available. See issue 12445. - // Also see crypto/internal/alias/alias.go:AnyOverlap - return uintptr(unsafe.Pointer(&a[0])) <= uintptr(unsafe.Pointer(&b[len(b)-1]))+(elemSize-1) && - uintptr(unsafe.Pointer(&b[0])) <= uintptr(unsafe.Pointer(&a[len(a)-1]))+(elemSize-1) -} - -// startIdx returns the index in haystack where the needle starts. -// prerequisite: the needle must be aliased entirely inside the haystack. -func startIdx[E any](haystack, needle []E) int { - p := &needle[0] - for i := range haystack { - if p == &haystack[i] { - return i - } - } - // TODO: what if the overlap is by a non-integral number of Es? - panic("needle not found") -} - -// Reverse reverses the elements of the slice in place. -func Reverse[S ~[]E, E any](s S) { - for i, j := 0, len(s)-1; i < j; i, j = i+1, j-1 { - s[i], s[j] = s[j], s[i] - } -} diff --git a/vendor/golang.org/x/exp/slices/sort.go b/vendor/golang.org/x/exp/slices/sort.go deleted file mode 100644 index f58bbc7ba4..0000000000 --- a/vendor/golang.org/x/exp/slices/sort.go +++ /dev/null @@ -1,197 +0,0 @@ -// Copyright 2022 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -//go:generate go run $GOROOT/src/sort/gen_sort_variants.go -exp - -package slices - -import ( - "math/bits" - - "golang.org/x/exp/constraints" -) - -// Sort sorts a slice of any ordered type in ascending order. -// When sorting floating-point numbers, NaNs are ordered before other values. -func Sort[S ~[]E, E constraints.Ordered](x S) { - n := len(x) - pdqsortOrdered(x, 0, n, bits.Len(uint(n))) -} - -// SortFunc sorts the slice x in ascending order as determined by the cmp -// function. This sort is not guaranteed to be stable. -// cmp(a, b) should return a negative number when a < b, a positive number when -// a > b and zero when a == b or when a is not comparable to b in the sense -// of the formal definition of Strict Weak Ordering. -// -// SortFunc requires that cmp is a strict weak ordering. -// See https://en.wikipedia.org/wiki/Weak_ordering#Strict_weak_orderings. -// To indicate 'uncomparable', return 0 from the function. -func SortFunc[S ~[]E, E any](x S, cmp func(a, b E) int) { - n := len(x) - pdqsortCmpFunc(x, 0, n, bits.Len(uint(n)), cmp) -} - -// SortStableFunc sorts the slice x while keeping the original order of equal -// elements, using cmp to compare elements in the same way as [SortFunc]. -func SortStableFunc[S ~[]E, E any](x S, cmp func(a, b E) int) { - stableCmpFunc(x, len(x), cmp) -} - -// IsSorted reports whether x is sorted in ascending order. -func IsSorted[S ~[]E, E constraints.Ordered](x S) bool { - for i := len(x) - 1; i > 0; i-- { - if cmpLess(x[i], x[i-1]) { - return false - } - } - return true -} - -// IsSortedFunc reports whether x is sorted in ascending order, with cmp as the -// comparison function as defined by [SortFunc]. -func IsSortedFunc[S ~[]E, E any](x S, cmp func(a, b E) int) bool { - for i := len(x) - 1; i > 0; i-- { - if cmp(x[i], x[i-1]) < 0 { - return false - } - } - return true -} - -// Min returns the minimal value in x. It panics if x is empty. -// For floating-point numbers, Min propagates NaNs (any NaN value in x -// forces the output to be NaN). -func Min[S ~[]E, E constraints.Ordered](x S) E { - if len(x) < 1 { - panic("slices.Min: empty list") - } - m := x[0] - for i := 1; i < len(x); i++ { - m = min(m, x[i]) - } - return m -} - -// MinFunc returns the minimal value in x, using cmp to compare elements. -// It panics if x is empty. If there is more than one minimal element -// according to the cmp function, MinFunc returns the first one. -func MinFunc[S ~[]E, E any](x S, cmp func(a, b E) int) E { - if len(x) < 1 { - panic("slices.MinFunc: empty list") - } - m := x[0] - for i := 1; i < len(x); i++ { - if cmp(x[i], m) < 0 { - m = x[i] - } - } - return m -} - -// Max returns the maximal value in x. It panics if x is empty. -// For floating-point E, Max propagates NaNs (any NaN value in x -// forces the output to be NaN). -func Max[S ~[]E, E constraints.Ordered](x S) E { - if len(x) < 1 { - panic("slices.Max: empty list") - } - m := x[0] - for i := 1; i < len(x); i++ { - m = max(m, x[i]) - } - return m -} - -// MaxFunc returns the maximal value in x, using cmp to compare elements. -// It panics if x is empty. If there is more than one maximal element -// according to the cmp function, MaxFunc returns the first one. -func MaxFunc[S ~[]E, E any](x S, cmp func(a, b E) int) E { - if len(x) < 1 { - panic("slices.MaxFunc: empty list") - } - m := x[0] - for i := 1; i < len(x); i++ { - if cmp(x[i], m) > 0 { - m = x[i] - } - } - return m -} - -// BinarySearch searches for target in a sorted slice and returns the position -// where target is found, or the position where target would appear in the -// sort order; it also returns a bool saying whether the target is really found -// in the slice. The slice must be sorted in increasing order. -func BinarySearch[S ~[]E, E constraints.Ordered](x S, target E) (int, bool) { - // Inlining is faster than calling BinarySearchFunc with a lambda. - n := len(x) - // Define x[-1] < target and x[n] >= target. - // Invariant: x[i-1] < target, x[j] >= target. - i, j := 0, n - for i < j { - h := int(uint(i+j) >> 1) // avoid overflow when computing h - // i ≤ h < j - if cmpLess(x[h], target) { - i = h + 1 // preserves x[i-1] < target - } else { - j = h // preserves x[j] >= target - } - } - // i == j, x[i-1] < target, and x[j] (= x[i]) >= target => answer is i. - return i, i < n && (x[i] == target || (isNaN(x[i]) && isNaN(target))) -} - -// BinarySearchFunc works like [BinarySearch], but uses a custom comparison -// function. The slice must be sorted in increasing order, where "increasing" -// is defined by cmp. cmp should return 0 if the slice element matches -// the target, a negative number if the slice element precedes the target, -// or a positive number if the slice element follows the target. -// cmp must implement the same ordering as the slice, such that if -// cmp(a, t) < 0 and cmp(b, t) >= 0, then a must precede b in the slice. -func BinarySearchFunc[S ~[]E, E, T any](x S, target T, cmp func(E, T) int) (int, bool) { - n := len(x) - // Define cmp(x[-1], target) < 0 and cmp(x[n], target) >= 0 . - // Invariant: cmp(x[i - 1], target) < 0, cmp(x[j], target) >= 0. - i, j := 0, n - for i < j { - h := int(uint(i+j) >> 1) // avoid overflow when computing h - // i ≤ h < j - if cmp(x[h], target) < 0 { - i = h + 1 // preserves cmp(x[i - 1], target) < 0 - } else { - j = h // preserves cmp(x[j], target) >= 0 - } - } - // i == j, cmp(x[i-1], target) < 0, and cmp(x[j], target) (= cmp(x[i], target)) >= 0 => answer is i. - return i, i < n && cmp(x[i], target) == 0 -} - -type sortedHint int // hint for pdqsort when choosing the pivot - -const ( - unknownHint sortedHint = iota - increasingHint - decreasingHint -) - -// xorshift paper: https://www.jstatsoft.org/article/view/v008i14/xorshift.pdf -type xorshift uint64 - -func (r *xorshift) Next() uint64 { - *r ^= *r << 13 - *r ^= *r >> 17 - *r ^= *r << 5 - return uint64(*r) -} - -func nextPowerOfTwo(length int) uint { - return 1 << bits.Len(uint(length)) -} - -// isNaN reports whether x is a NaN without requiring the math package. -// This will always return false if T is not floating-point. -func isNaN[T constraints.Ordered](x T) bool { - return x != x -} diff --git a/vendor/golang.org/x/exp/slices/zsortanyfunc.go b/vendor/golang.org/x/exp/slices/zsortanyfunc.go deleted file mode 100644 index 06f2c7a248..0000000000 --- a/vendor/golang.org/x/exp/slices/zsortanyfunc.go +++ /dev/null @@ -1,479 +0,0 @@ -// Code generated by gen_sort_variants.go; DO NOT EDIT. - -// Copyright 2022 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package slices - -// insertionSortCmpFunc sorts data[a:b] using insertion sort. -func insertionSortCmpFunc[E any](data []E, a, b int, cmp func(a, b E) int) { - for i := a + 1; i < b; i++ { - for j := i; j > a && (cmp(data[j], data[j-1]) < 0); j-- { - data[j], data[j-1] = data[j-1], data[j] - } - } -} - -// siftDownCmpFunc implements the heap property on data[lo:hi]. -// first is an offset into the array where the root of the heap lies. -func siftDownCmpFunc[E any](data []E, lo, hi, first int, cmp func(a, b E) int) { - root := lo - for { - child := 2*root + 1 - if child >= hi { - break - } - if child+1 < hi && (cmp(data[first+child], data[first+child+1]) < 0) { - child++ - } - if !(cmp(data[first+root], data[first+child]) < 0) { - return - } - data[first+root], data[first+child] = data[first+child], data[first+root] - root = child - } -} - -func heapSortCmpFunc[E any](data []E, a, b int, cmp func(a, b E) int) { - first := a - lo := 0 - hi := b - a - - // Build heap with greatest element at top. - for i := (hi - 1) / 2; i >= 0; i-- { - siftDownCmpFunc(data, i, hi, first, cmp) - } - - // Pop elements, largest first, into end of data. - for i := hi - 1; i >= 0; i-- { - data[first], data[first+i] = data[first+i], data[first] - siftDownCmpFunc(data, lo, i, first, cmp) - } -} - -// pdqsortCmpFunc sorts data[a:b]. -// The algorithm based on pattern-defeating quicksort(pdqsort), but without the optimizations from BlockQuicksort. -// pdqsort paper: https://arxiv.org/pdf/2106.05123.pdf -// C++ implementation: https://github.com/orlp/pdqsort -// Rust implementation: https://docs.rs/pdqsort/latest/pdqsort/ -// limit is the number of allowed bad (very unbalanced) pivots before falling back to heapsort. -func pdqsortCmpFunc[E any](data []E, a, b, limit int, cmp func(a, b E) int) { - const maxInsertion = 12 - - var ( - wasBalanced = true // whether the last partitioning was reasonably balanced - wasPartitioned = true // whether the slice was already partitioned - ) - - for { - length := b - a - - if length <= maxInsertion { - insertionSortCmpFunc(data, a, b, cmp) - return - } - - // Fall back to heapsort if too many bad choices were made. - if limit == 0 { - heapSortCmpFunc(data, a, b, cmp) - return - } - - // If the last partitioning was imbalanced, we need to breaking patterns. - if !wasBalanced { - breakPatternsCmpFunc(data, a, b, cmp) - limit-- - } - - pivot, hint := choosePivotCmpFunc(data, a, b, cmp) - if hint == decreasingHint { - reverseRangeCmpFunc(data, a, b, cmp) - // The chosen pivot was pivot-a elements after the start of the array. - // After reversing it is pivot-a elements before the end of the array. - // The idea came from Rust's implementation. - pivot = (b - 1) - (pivot - a) - hint = increasingHint - } - - // The slice is likely already sorted. - if wasBalanced && wasPartitioned && hint == increasingHint { - if partialInsertionSortCmpFunc(data, a, b, cmp) { - return - } - } - - // Probably the slice contains many duplicate elements, partition the slice into - // elements equal to and elements greater than the pivot. - if a > 0 && !(cmp(data[a-1], data[pivot]) < 0) { - mid := partitionEqualCmpFunc(data, a, b, pivot, cmp) - a = mid - continue - } - - mid, alreadyPartitioned := partitionCmpFunc(data, a, b, pivot, cmp) - wasPartitioned = alreadyPartitioned - - leftLen, rightLen := mid-a, b-mid - balanceThreshold := length / 8 - if leftLen < rightLen { - wasBalanced = leftLen >= balanceThreshold - pdqsortCmpFunc(data, a, mid, limit, cmp) - a = mid + 1 - } else { - wasBalanced = rightLen >= balanceThreshold - pdqsortCmpFunc(data, mid+1, b, limit, cmp) - b = mid - } - } -} - -// partitionCmpFunc does one quicksort partition. -// Let p = data[pivot] -// Moves elements in data[a:b] around, so that data[i]

=p for inewpivot. -// On return, data[newpivot] = p -func partitionCmpFunc[E any](data []E, a, b, pivot int, cmp func(a, b E) int) (newpivot int, alreadyPartitioned bool) { - data[a], data[pivot] = data[pivot], data[a] - i, j := a+1, b-1 // i and j are inclusive of the elements remaining to be partitioned - - for i <= j && (cmp(data[i], data[a]) < 0) { - i++ - } - for i <= j && !(cmp(data[j], data[a]) < 0) { - j-- - } - if i > j { - data[j], data[a] = data[a], data[j] - return j, true - } - data[i], data[j] = data[j], data[i] - i++ - j-- - - for { - for i <= j && (cmp(data[i], data[a]) < 0) { - i++ - } - for i <= j && !(cmp(data[j], data[a]) < 0) { - j-- - } - if i > j { - break - } - data[i], data[j] = data[j], data[i] - i++ - j-- - } - data[j], data[a] = data[a], data[j] - return j, false -} - -// partitionEqualCmpFunc partitions data[a:b] into elements equal to data[pivot] followed by elements greater than data[pivot]. -// It assumed that data[a:b] does not contain elements smaller than the data[pivot]. -func partitionEqualCmpFunc[E any](data []E, a, b, pivot int, cmp func(a, b E) int) (newpivot int) { - data[a], data[pivot] = data[pivot], data[a] - i, j := a+1, b-1 // i and j are inclusive of the elements remaining to be partitioned - - for { - for i <= j && !(cmp(data[a], data[i]) < 0) { - i++ - } - for i <= j && (cmp(data[a], data[j]) < 0) { - j-- - } - if i > j { - break - } - data[i], data[j] = data[j], data[i] - i++ - j-- - } - return i -} - -// partialInsertionSortCmpFunc partially sorts a slice, returns true if the slice is sorted at the end. -func partialInsertionSortCmpFunc[E any](data []E, a, b int, cmp func(a, b E) int) bool { - const ( - maxSteps = 5 // maximum number of adjacent out-of-order pairs that will get shifted - shortestShifting = 50 // don't shift any elements on short arrays - ) - i := a + 1 - for j := 0; j < maxSteps; j++ { - for i < b && !(cmp(data[i], data[i-1]) < 0) { - i++ - } - - if i == b { - return true - } - - if b-a < shortestShifting { - return false - } - - data[i], data[i-1] = data[i-1], data[i] - - // Shift the smaller one to the left. - if i-a >= 2 { - for j := i - 1; j >= 1; j-- { - if !(cmp(data[j], data[j-1]) < 0) { - break - } - data[j], data[j-1] = data[j-1], data[j] - } - } - // Shift the greater one to the right. - if b-i >= 2 { - for j := i + 1; j < b; j++ { - if !(cmp(data[j], data[j-1]) < 0) { - break - } - data[j], data[j-1] = data[j-1], data[j] - } - } - } - return false -} - -// breakPatternsCmpFunc scatters some elements around in an attempt to break some patterns -// that might cause imbalanced partitions in quicksort. -func breakPatternsCmpFunc[E any](data []E, a, b int, cmp func(a, b E) int) { - length := b - a - if length >= 8 { - random := xorshift(length) - modulus := nextPowerOfTwo(length) - - for idx := a + (length/4)*2 - 1; idx <= a+(length/4)*2+1; idx++ { - other := int(uint(random.Next()) & (modulus - 1)) - if other >= length { - other -= length - } - data[idx], data[a+other] = data[a+other], data[idx] - } - } -} - -// choosePivotCmpFunc chooses a pivot in data[a:b]. -// -// [0,8): chooses a static pivot. -// [8,shortestNinther): uses the simple median-of-three method. -// [shortestNinther,∞): uses the Tukey ninther method. -func choosePivotCmpFunc[E any](data []E, a, b int, cmp func(a, b E) int) (pivot int, hint sortedHint) { - const ( - shortestNinther = 50 - maxSwaps = 4 * 3 - ) - - l := b - a - - var ( - swaps int - i = a + l/4*1 - j = a + l/4*2 - k = a + l/4*3 - ) - - if l >= 8 { - if l >= shortestNinther { - // Tukey ninther method, the idea came from Rust's implementation. - i = medianAdjacentCmpFunc(data, i, &swaps, cmp) - j = medianAdjacentCmpFunc(data, j, &swaps, cmp) - k = medianAdjacentCmpFunc(data, k, &swaps, cmp) - } - // Find the median among i, j, k and stores it into j. - j = medianCmpFunc(data, i, j, k, &swaps, cmp) - } - - switch swaps { - case 0: - return j, increasingHint - case maxSwaps: - return j, decreasingHint - default: - return j, unknownHint - } -} - -// order2CmpFunc returns x,y where data[x] <= data[y], where x,y=a,b or x,y=b,a. -func order2CmpFunc[E any](data []E, a, b int, swaps *int, cmp func(a, b E) int) (int, int) { - if cmp(data[b], data[a]) < 0 { - *swaps++ - return b, a - } - return a, b -} - -// medianCmpFunc returns x where data[x] is the median of data[a],data[b],data[c], where x is a, b, or c. -func medianCmpFunc[E any](data []E, a, b, c int, swaps *int, cmp func(a, b E) int) int { - a, b = order2CmpFunc(data, a, b, swaps, cmp) - b, c = order2CmpFunc(data, b, c, swaps, cmp) - a, b = order2CmpFunc(data, a, b, swaps, cmp) - return b -} - -// medianAdjacentCmpFunc finds the median of data[a - 1], data[a], data[a + 1] and stores the index into a. -func medianAdjacentCmpFunc[E any](data []E, a int, swaps *int, cmp func(a, b E) int) int { - return medianCmpFunc(data, a-1, a, a+1, swaps, cmp) -} - -func reverseRangeCmpFunc[E any](data []E, a, b int, cmp func(a, b E) int) { - i := a - j := b - 1 - for i < j { - data[i], data[j] = data[j], data[i] - i++ - j-- - } -} - -func swapRangeCmpFunc[E any](data []E, a, b, n int, cmp func(a, b E) int) { - for i := 0; i < n; i++ { - data[a+i], data[b+i] = data[b+i], data[a+i] - } -} - -func stableCmpFunc[E any](data []E, n int, cmp func(a, b E) int) { - blockSize := 20 // must be > 0 - a, b := 0, blockSize - for b <= n { - insertionSortCmpFunc(data, a, b, cmp) - a = b - b += blockSize - } - insertionSortCmpFunc(data, a, n, cmp) - - for blockSize < n { - a, b = 0, 2*blockSize - for b <= n { - symMergeCmpFunc(data, a, a+blockSize, b, cmp) - a = b - b += 2 * blockSize - } - if m := a + blockSize; m < n { - symMergeCmpFunc(data, a, m, n, cmp) - } - blockSize *= 2 - } -} - -// symMergeCmpFunc merges the two sorted subsequences data[a:m] and data[m:b] using -// the SymMerge algorithm from Pok-Son Kim and Arne Kutzner, "Stable Minimum -// Storage Merging by Symmetric Comparisons", in Susanne Albers and Tomasz -// Radzik, editors, Algorithms - ESA 2004, volume 3221 of Lecture Notes in -// Computer Science, pages 714-723. Springer, 2004. -// -// Let M = m-a and N = b-n. Wolog M < N. -// The recursion depth is bound by ceil(log(N+M)). -// The algorithm needs O(M*log(N/M + 1)) calls to data.Less. -// The algorithm needs O((M+N)*log(M)) calls to data.Swap. -// -// The paper gives O((M+N)*log(M)) as the number of assignments assuming a -// rotation algorithm which uses O(M+N+gcd(M+N)) assignments. The argumentation -// in the paper carries through for Swap operations, especially as the block -// swapping rotate uses only O(M+N) Swaps. -// -// symMerge assumes non-degenerate arguments: a < m && m < b. -// Having the caller check this condition eliminates many leaf recursion calls, -// which improves performance. -func symMergeCmpFunc[E any](data []E, a, m, b int, cmp func(a, b E) int) { - // Avoid unnecessary recursions of symMerge - // by direct insertion of data[a] into data[m:b] - // if data[a:m] only contains one element. - if m-a == 1 { - // Use binary search to find the lowest index i - // such that data[i] >= data[a] for m <= i < b. - // Exit the search loop with i == b in case no such index exists. - i := m - j := b - for i < j { - h := int(uint(i+j) >> 1) - if cmp(data[h], data[a]) < 0 { - i = h + 1 - } else { - j = h - } - } - // Swap values until data[a] reaches the position before i. - for k := a; k < i-1; k++ { - data[k], data[k+1] = data[k+1], data[k] - } - return - } - - // Avoid unnecessary recursions of symMerge - // by direct insertion of data[m] into data[a:m] - // if data[m:b] only contains one element. - if b-m == 1 { - // Use binary search to find the lowest index i - // such that data[i] > data[m] for a <= i < m. - // Exit the search loop with i == m in case no such index exists. - i := a - j := m - for i < j { - h := int(uint(i+j) >> 1) - if !(cmp(data[m], data[h]) < 0) { - i = h + 1 - } else { - j = h - } - } - // Swap values until data[m] reaches the position i. - for k := m; k > i; k-- { - data[k], data[k-1] = data[k-1], data[k] - } - return - } - - mid := int(uint(a+b) >> 1) - n := mid + m - var start, r int - if m > mid { - start = n - b - r = mid - } else { - start = a - r = m - } - p := n - 1 - - for start < r { - c := int(uint(start+r) >> 1) - if !(cmp(data[p-c], data[c]) < 0) { - start = c + 1 - } else { - r = c - } - } - - end := n - start - if start < m && m < end { - rotateCmpFunc(data, start, m, end, cmp) - } - if a < start && start < mid { - symMergeCmpFunc(data, a, start, mid, cmp) - } - if mid < end && end < b { - symMergeCmpFunc(data, mid, end, b, cmp) - } -} - -// rotateCmpFunc rotates two consecutive blocks u = data[a:m] and v = data[m:b] in data: -// Data of the form 'x u v y' is changed to 'x v u y'. -// rotate performs at most b-a many calls to data.Swap, -// and it assumes non-degenerate arguments: a < m && m < b. -func rotateCmpFunc[E any](data []E, a, m, b int, cmp func(a, b E) int) { - i := m - a - j := b - m - - for i != j { - if i > j { - swapRangeCmpFunc(data, m-i, m, j, cmp) - i -= j - } else { - swapRangeCmpFunc(data, m-i, m+j-i, i, cmp) - j -= i - } - } - // i == j - swapRangeCmpFunc(data, m-i, m, i, cmp) -} diff --git a/vendor/golang.org/x/exp/slices/zsortordered.go b/vendor/golang.org/x/exp/slices/zsortordered.go deleted file mode 100644 index 99b47c3986..0000000000 --- a/vendor/golang.org/x/exp/slices/zsortordered.go +++ /dev/null @@ -1,481 +0,0 @@ -// Code generated by gen_sort_variants.go; DO NOT EDIT. - -// Copyright 2022 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package slices - -import "golang.org/x/exp/constraints" - -// insertionSortOrdered sorts data[a:b] using insertion sort. -func insertionSortOrdered[E constraints.Ordered](data []E, a, b int) { - for i := a + 1; i < b; i++ { - for j := i; j > a && cmpLess(data[j], data[j-1]); j-- { - data[j], data[j-1] = data[j-1], data[j] - } - } -} - -// siftDownOrdered implements the heap property on data[lo:hi]. -// first is an offset into the array where the root of the heap lies. -func siftDownOrdered[E constraints.Ordered](data []E, lo, hi, first int) { - root := lo - for { - child := 2*root + 1 - if child >= hi { - break - } - if child+1 < hi && cmpLess(data[first+child], data[first+child+1]) { - child++ - } - if !cmpLess(data[first+root], data[first+child]) { - return - } - data[first+root], data[first+child] = data[first+child], data[first+root] - root = child - } -} - -func heapSortOrdered[E constraints.Ordered](data []E, a, b int) { - first := a - lo := 0 - hi := b - a - - // Build heap with greatest element at top. - for i := (hi - 1) / 2; i >= 0; i-- { - siftDownOrdered(data, i, hi, first) - } - - // Pop elements, largest first, into end of data. - for i := hi - 1; i >= 0; i-- { - data[first], data[first+i] = data[first+i], data[first] - siftDownOrdered(data, lo, i, first) - } -} - -// pdqsortOrdered sorts data[a:b]. -// The algorithm based on pattern-defeating quicksort(pdqsort), but without the optimizations from BlockQuicksort. -// pdqsort paper: https://arxiv.org/pdf/2106.05123.pdf -// C++ implementation: https://github.com/orlp/pdqsort -// Rust implementation: https://docs.rs/pdqsort/latest/pdqsort/ -// limit is the number of allowed bad (very unbalanced) pivots before falling back to heapsort. -func pdqsortOrdered[E constraints.Ordered](data []E, a, b, limit int) { - const maxInsertion = 12 - - var ( - wasBalanced = true // whether the last partitioning was reasonably balanced - wasPartitioned = true // whether the slice was already partitioned - ) - - for { - length := b - a - - if length <= maxInsertion { - insertionSortOrdered(data, a, b) - return - } - - // Fall back to heapsort if too many bad choices were made. - if limit == 0 { - heapSortOrdered(data, a, b) - return - } - - // If the last partitioning was imbalanced, we need to breaking patterns. - if !wasBalanced { - breakPatternsOrdered(data, a, b) - limit-- - } - - pivot, hint := choosePivotOrdered(data, a, b) - if hint == decreasingHint { - reverseRangeOrdered(data, a, b) - // The chosen pivot was pivot-a elements after the start of the array. - // After reversing it is pivot-a elements before the end of the array. - // The idea came from Rust's implementation. - pivot = (b - 1) - (pivot - a) - hint = increasingHint - } - - // The slice is likely already sorted. - if wasBalanced && wasPartitioned && hint == increasingHint { - if partialInsertionSortOrdered(data, a, b) { - return - } - } - - // Probably the slice contains many duplicate elements, partition the slice into - // elements equal to and elements greater than the pivot. - if a > 0 && !cmpLess(data[a-1], data[pivot]) { - mid := partitionEqualOrdered(data, a, b, pivot) - a = mid - continue - } - - mid, alreadyPartitioned := partitionOrdered(data, a, b, pivot) - wasPartitioned = alreadyPartitioned - - leftLen, rightLen := mid-a, b-mid - balanceThreshold := length / 8 - if leftLen < rightLen { - wasBalanced = leftLen >= balanceThreshold - pdqsortOrdered(data, a, mid, limit) - a = mid + 1 - } else { - wasBalanced = rightLen >= balanceThreshold - pdqsortOrdered(data, mid+1, b, limit) - b = mid - } - } -} - -// partitionOrdered does one quicksort partition. -// Let p = data[pivot] -// Moves elements in data[a:b] around, so that data[i]

=p for inewpivot. -// On return, data[newpivot] = p -func partitionOrdered[E constraints.Ordered](data []E, a, b, pivot int) (newpivot int, alreadyPartitioned bool) { - data[a], data[pivot] = data[pivot], data[a] - i, j := a+1, b-1 // i and j are inclusive of the elements remaining to be partitioned - - for i <= j && cmpLess(data[i], data[a]) { - i++ - } - for i <= j && !cmpLess(data[j], data[a]) { - j-- - } - if i > j { - data[j], data[a] = data[a], data[j] - return j, true - } - data[i], data[j] = data[j], data[i] - i++ - j-- - - for { - for i <= j && cmpLess(data[i], data[a]) { - i++ - } - for i <= j && !cmpLess(data[j], data[a]) { - j-- - } - if i > j { - break - } - data[i], data[j] = data[j], data[i] - i++ - j-- - } - data[j], data[a] = data[a], data[j] - return j, false -} - -// partitionEqualOrdered partitions data[a:b] into elements equal to data[pivot] followed by elements greater than data[pivot]. -// It assumed that data[a:b] does not contain elements smaller than the data[pivot]. -func partitionEqualOrdered[E constraints.Ordered](data []E, a, b, pivot int) (newpivot int) { - data[a], data[pivot] = data[pivot], data[a] - i, j := a+1, b-1 // i and j are inclusive of the elements remaining to be partitioned - - for { - for i <= j && !cmpLess(data[a], data[i]) { - i++ - } - for i <= j && cmpLess(data[a], data[j]) { - j-- - } - if i > j { - break - } - data[i], data[j] = data[j], data[i] - i++ - j-- - } - return i -} - -// partialInsertionSortOrdered partially sorts a slice, returns true if the slice is sorted at the end. -func partialInsertionSortOrdered[E constraints.Ordered](data []E, a, b int) bool { - const ( - maxSteps = 5 // maximum number of adjacent out-of-order pairs that will get shifted - shortestShifting = 50 // don't shift any elements on short arrays - ) - i := a + 1 - for j := 0; j < maxSteps; j++ { - for i < b && !cmpLess(data[i], data[i-1]) { - i++ - } - - if i == b { - return true - } - - if b-a < shortestShifting { - return false - } - - data[i], data[i-1] = data[i-1], data[i] - - // Shift the smaller one to the left. - if i-a >= 2 { - for j := i - 1; j >= 1; j-- { - if !cmpLess(data[j], data[j-1]) { - break - } - data[j], data[j-1] = data[j-1], data[j] - } - } - // Shift the greater one to the right. - if b-i >= 2 { - for j := i + 1; j < b; j++ { - if !cmpLess(data[j], data[j-1]) { - break - } - data[j], data[j-1] = data[j-1], data[j] - } - } - } - return false -} - -// breakPatternsOrdered scatters some elements around in an attempt to break some patterns -// that might cause imbalanced partitions in quicksort. -func breakPatternsOrdered[E constraints.Ordered](data []E, a, b int) { - length := b - a - if length >= 8 { - random := xorshift(length) - modulus := nextPowerOfTwo(length) - - for idx := a + (length/4)*2 - 1; idx <= a+(length/4)*2+1; idx++ { - other := int(uint(random.Next()) & (modulus - 1)) - if other >= length { - other -= length - } - data[idx], data[a+other] = data[a+other], data[idx] - } - } -} - -// choosePivotOrdered chooses a pivot in data[a:b]. -// -// [0,8): chooses a static pivot. -// [8,shortestNinther): uses the simple median-of-three method. -// [shortestNinther,∞): uses the Tukey ninther method. -func choosePivotOrdered[E constraints.Ordered](data []E, a, b int) (pivot int, hint sortedHint) { - const ( - shortestNinther = 50 - maxSwaps = 4 * 3 - ) - - l := b - a - - var ( - swaps int - i = a + l/4*1 - j = a + l/4*2 - k = a + l/4*3 - ) - - if l >= 8 { - if l >= shortestNinther { - // Tukey ninther method, the idea came from Rust's implementation. - i = medianAdjacentOrdered(data, i, &swaps) - j = medianAdjacentOrdered(data, j, &swaps) - k = medianAdjacentOrdered(data, k, &swaps) - } - // Find the median among i, j, k and stores it into j. - j = medianOrdered(data, i, j, k, &swaps) - } - - switch swaps { - case 0: - return j, increasingHint - case maxSwaps: - return j, decreasingHint - default: - return j, unknownHint - } -} - -// order2Ordered returns x,y where data[x] <= data[y], where x,y=a,b or x,y=b,a. -func order2Ordered[E constraints.Ordered](data []E, a, b int, swaps *int) (int, int) { - if cmpLess(data[b], data[a]) { - *swaps++ - return b, a - } - return a, b -} - -// medianOrdered returns x where data[x] is the median of data[a],data[b],data[c], where x is a, b, or c. -func medianOrdered[E constraints.Ordered](data []E, a, b, c int, swaps *int) int { - a, b = order2Ordered(data, a, b, swaps) - b, c = order2Ordered(data, b, c, swaps) - a, b = order2Ordered(data, a, b, swaps) - return b -} - -// medianAdjacentOrdered finds the median of data[a - 1], data[a], data[a + 1] and stores the index into a. -func medianAdjacentOrdered[E constraints.Ordered](data []E, a int, swaps *int) int { - return medianOrdered(data, a-1, a, a+1, swaps) -} - -func reverseRangeOrdered[E constraints.Ordered](data []E, a, b int) { - i := a - j := b - 1 - for i < j { - data[i], data[j] = data[j], data[i] - i++ - j-- - } -} - -func swapRangeOrdered[E constraints.Ordered](data []E, a, b, n int) { - for i := 0; i < n; i++ { - data[a+i], data[b+i] = data[b+i], data[a+i] - } -} - -func stableOrdered[E constraints.Ordered](data []E, n int) { - blockSize := 20 // must be > 0 - a, b := 0, blockSize - for b <= n { - insertionSortOrdered(data, a, b) - a = b - b += blockSize - } - insertionSortOrdered(data, a, n) - - for blockSize < n { - a, b = 0, 2*blockSize - for b <= n { - symMergeOrdered(data, a, a+blockSize, b) - a = b - b += 2 * blockSize - } - if m := a + blockSize; m < n { - symMergeOrdered(data, a, m, n) - } - blockSize *= 2 - } -} - -// symMergeOrdered merges the two sorted subsequences data[a:m] and data[m:b] using -// the SymMerge algorithm from Pok-Son Kim and Arne Kutzner, "Stable Minimum -// Storage Merging by Symmetric Comparisons", in Susanne Albers and Tomasz -// Radzik, editors, Algorithms - ESA 2004, volume 3221 of Lecture Notes in -// Computer Science, pages 714-723. Springer, 2004. -// -// Let M = m-a and N = b-n. Wolog M < N. -// The recursion depth is bound by ceil(log(N+M)). -// The algorithm needs O(M*log(N/M + 1)) calls to data.Less. -// The algorithm needs O((M+N)*log(M)) calls to data.Swap. -// -// The paper gives O((M+N)*log(M)) as the number of assignments assuming a -// rotation algorithm which uses O(M+N+gcd(M+N)) assignments. The argumentation -// in the paper carries through for Swap operations, especially as the block -// swapping rotate uses only O(M+N) Swaps. -// -// symMerge assumes non-degenerate arguments: a < m && m < b. -// Having the caller check this condition eliminates many leaf recursion calls, -// which improves performance. -func symMergeOrdered[E constraints.Ordered](data []E, a, m, b int) { - // Avoid unnecessary recursions of symMerge - // by direct insertion of data[a] into data[m:b] - // if data[a:m] only contains one element. - if m-a == 1 { - // Use binary search to find the lowest index i - // such that data[i] >= data[a] for m <= i < b. - // Exit the search loop with i == b in case no such index exists. - i := m - j := b - for i < j { - h := int(uint(i+j) >> 1) - if cmpLess(data[h], data[a]) { - i = h + 1 - } else { - j = h - } - } - // Swap values until data[a] reaches the position before i. - for k := a; k < i-1; k++ { - data[k], data[k+1] = data[k+1], data[k] - } - return - } - - // Avoid unnecessary recursions of symMerge - // by direct insertion of data[m] into data[a:m] - // if data[m:b] only contains one element. - if b-m == 1 { - // Use binary search to find the lowest index i - // such that data[i] > data[m] for a <= i < m. - // Exit the search loop with i == m in case no such index exists. - i := a - j := m - for i < j { - h := int(uint(i+j) >> 1) - if !cmpLess(data[m], data[h]) { - i = h + 1 - } else { - j = h - } - } - // Swap values until data[m] reaches the position i. - for k := m; k > i; k-- { - data[k], data[k-1] = data[k-1], data[k] - } - return - } - - mid := int(uint(a+b) >> 1) - n := mid + m - var start, r int - if m > mid { - start = n - b - r = mid - } else { - start = a - r = m - } - p := n - 1 - - for start < r { - c := int(uint(start+r) >> 1) - if !cmpLess(data[p-c], data[c]) { - start = c + 1 - } else { - r = c - } - } - - end := n - start - if start < m && m < end { - rotateOrdered(data, start, m, end) - } - if a < start && start < mid { - symMergeOrdered(data, a, start, mid) - } - if mid < end && end < b { - symMergeOrdered(data, mid, end, b) - } -} - -// rotateOrdered rotates two consecutive blocks u = data[a:m] and v = data[m:b] in data: -// Data of the form 'x u v y' is changed to 'x v u y'. -// rotate performs at most b-a many calls to data.Swap, -// and it assumes non-degenerate arguments: a < m && m < b. -func rotateOrdered[E constraints.Ordered](data []E, a, m, b int) { - i := m - a - j := b - m - - for i != j { - if i > j { - swapRangeOrdered(data, m-i, m, j) - i -= j - } else { - swapRangeOrdered(data, m-i, m+j-i, i) - j -= i - } - } - // i == j - swapRangeOrdered(data, m-i, m, i) -} diff --git a/vendor/modules.txt b/vendor/modules.txt index d518671450..f1d137acbe 100644 --- a/vendor/modules.txt +++ b/vendor/modules.txt @@ -895,9 +895,7 @@ golang.org/x/crypto/scrypt golang.org/x/crypto/sha3 # golang.org/x/exp v0.0.0-20240613232115-7f521ea00fb8 ## explicit; go 1.20 -golang.org/x/exp/constraints golang.org/x/exp/maps -golang.org/x/exp/slices # golang.org/x/mod v0.20.0 ## explicit; go 1.18 golang.org/x/mod/semver