var encodeStatePool sync.Pool

func newEncodeState() *encodeState {
	if v := encodeStatePool.Get(); v != nil {
		e := v.(*encodeState)
		e.Reset()
		if len(e.ptrSeen) > 0 {
			panic("ptrEncoder.encode should have emptied ptrSeen via defers")
		}
		e.ptrLevel = 0
		return e
	}
	return &encodeState{ptrSeen: make(map[any]struct{})}
}

				b.Fatal("Marshal error: got nil, want non-nil")
			}
		}
	}
}

func BenchmarkMarshalBytes(b *testing.B) {
	b.ReportAllocs()
	// 32 fits within encodeState.scratch.
	b.Run("32", benchMarshalBytes(32))
	// 256 doesn't fit in encodeState.scratch, but is small enough to
	// allocate and avoid the slower base64.NewEncoder.
	b.Run("256", benchMarshalBytes(256))

	reflect.Uint64:     encUint64Slice,
	reflect.Uintptr:    encUintptrSlice,
}

func encBoolArray(state *encoderState, v reflect.Value) bool {
	// Can only slice if it is addressable.
	if !v.CanAddr() {
		return false
	}
	return encBoolSlice(state, v.Slice(0, v.Len()))
}

func encBoolSlice(state *encoderState, v reflect.Value) bool {
	slice, ok := v.Interface().([]bool)
	if !ok {

	sent       map[reflect.Type]typeId // which types we've already sent
	countState *encoderState           // stage for writing counts
	freeList   *encoderState           // list of free encoderStates; avoids reallocation
	byteBuf    encBuffer               // buffer for top-level encoderState
	err        error
}

// Before we encode a message, we reserve space at the head of the

	"sync"
)

const uint64Size = 8

type encHelper func(state *encoderState, v reflect.Value) bool

// encoderState is the global execution state of an instance of the encoder.
// Field numbers are delta encoded and always increase. The field
// number is initialized to -1 so 0 comes out as delta(1). A delta of
// 0 terminates the structure.
type encoderState struct {
	enc      *Encoder
	b        *encBuffer

import (
	"reflect"
)

`

const arrayHelper = `
func enc%[2]sArray(state *encoderState, v reflect.Value) bool {
	// Can only slice if it is addressable.
	if !v.CanAddr() {
		return false
	}
	return enc%[2]sSlice(state, v.Slice(0, v.Len()))
}
`

const sliceHelper = `
func enc%[2]sSlice(state *encoderState, v reflect.Value) bool {
	slice, ok := v.Interface().([]%[1]s)
	if !ok {

func newDecodeState(buf *decBuffer) *decoderState {
	d := new(decoderState)
	d.b = buf
	return d
}

func newEncoderState(b *encBuffer) *encoderState {
	b.Reset()
	state := &encoderState{enc: nil, b: b}
	state.fieldnum = -1
	return state
}

// Test instruction execution for encoding.
// Do not run the machine yet; instead do individual instructions crafted by hand.