import (
	"sync"

	"istio.io/istio/pkg/ptr"
	"istio.io/istio/pkg/util/sets"
)

// Index maintains a simple index over an informer
type Index[I any, K comparable] struct {
	mu      sync.RWMutex
	objects map[K]sets.Set[Key[I]]
	c       Collection[I]
	extract func(o I) []K
}

// Lookup finds all objects matching a given key
func (i *Index[I, K]) Lookup(k K) []I {
	i.mu.RLock()
	defer i.mu.RUnlock()
	var res []I

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package main

import (
	"fmt"
)

// Index returns the index of x in s, or -1 if not found.
func Index[T comparable](s []T, x T) int {
	for i, v := range s {
		// v and x are type T, which has the comparable
		// constraint, so we can use == here.
		if v == x {
			return i
		}
	}

				})

				indexes[index.Name] = idx
			}
		}
	}
	for _, index := range indexes {
		if index.Class == "UNIQUE" && len(index.Fields) == 1 {
			index.Fields[0].Field.UniqueIndex = index.Name
		}
	}
	return indexes
}

func (schema *Schema) LookIndex(name string) *Index {
	if schema != nil {
		indexes := schema.ParseIndexes()
		for _, index := range indexes {
			if index.Name == name {
				return &index

import "database/sql"

// Index implements gorm.Index interface
type Index struct {
	TableName       string
	NameValue       string
	ColumnList      []string
	PrimaryKeyValue sql.NullBool
	UniqueValue     sql.NullBool
	OptionValue     string
}

// Table return the table name of the index.
func (idx Index) Table() string {
	return idx.TableName
}

// Name return the name of the index.
func (idx Index) Name() string {

	"istio.io/istio/pkg/util/sets"
)

// Index reprensents an index over workload instances from workload entries.
//
// Indexes are thread-safe.
type Index interface {
	// Insert adds/updates given workload instance to the index.
	//
	// Returns previous value in the index, or nil otherwise.
	Insert(*model.WorkloadInstance) *model.WorkloadInstance
	// Delete removes given workload instance from the index.
	//

	"istio.io/istio/pkg/kube/controllers"
	"istio.io/istio/pkg/util/sets"
)

// Index maintains a simple index over an informer
type Index[K comparable, O controllers.ComparableObject] struct {
	mu      sync.RWMutex
	objects map[K]sets.Set[types.NamespacedName]
	client  Informer[O]
}

// Lookup finds all objects matching a given key
func (i *Index[K, O]) Lookup(k K) []O {
	i.mu.RLock()
	defer i.mu.RUnlock()
	res := make([]O, 0)

	// PVs are indexed by their access modes to allow easier searching.  Each
	// index is the string representation of a set of access modes. There is a
	// finite number of possible sets and PVs will only be indexed in one of
	// them (whichever index matches the PV's modes).
	//
	// A request for resources will always specify its desired access modes.

	y := [5]int64{1, 2, 3, 4, 5}
	z := "abcd"
	w := make([]byte, 4)
	w[3] = 5
	v := make(map[int]int64)
	v[3] = 18

	test(Index1(x), int64(2))
	test(Index1(y), int64(4))
	test(Index2(z), byte(100))
	test(Index2(w), byte(5))
	test(Index2a(w), byte(5))
	test(Index3(v), int64(18))
	test(Index4(v), int64(18))

	Name7        string `gorm:"index:type"`
	Name8        string `gorm:"index:,length:10;index:,collate:utf8"`

	// Composite Index: Flattened structure.
	Data0A string `gorm:"index:,composite:comp_id0"`
	Data0B string `gorm:"index:,composite:comp_id0"`

	// Composite Index: Nested structure.
	Data1A string `gorm:"index:,composite:comp_id1"`
	CompIdxLevel1C

	// Composite Index: Unique and priority.

			panic("gcprog: out of sync")
		}
	}
}

// Ptr emits a 1 into the bit stream at the given bit index.
// that is, it records that the index'th word in the object memory is a pointer.
// Any bits between the current index and the new index
// are set to zero, meaning the corresponding words are scalars.
func (w *Writer) Ptr(index int64) {
	if index < w.index {