isExpr()
}

// A TagExpr is an [Expr] for the single tag Tag.
type TagExpr struct {
	Tag string // for example, “linux” or “cgo”
}

func (x *TagExpr) isExpr() {}

func (x *TagExpr) Eval(ok func(tag string) bool) bool {
	return ok(x.Tag)
}

func (x *TagExpr) String() string {
	return x.Tag
}

func tag(tag string) Expr { return &TagExpr{tag} }

from typing import AsyncGenerator, ContextManager, TypeVar

import anyio
from anyio import CapacityLimiter
from starlette.concurrency import iterate_in_threadpool as iterate_in_threadpool  # noqa
from starlette.concurrency import run_in_threadpool as run_in_threadpool  # noqa
from starlette.concurrency import (  # noqa
    run_until_first_complete as run_until_first_complete,
)

_T = TypeVar("_T")


@asynccontextmanager

	newtyp := getTypeUnlocked("int", reflect.TypeFor[int]())
	if newtyp != tInt.gobType() {
		t.Errorf("reregistration of %s got new type", newtyp.string())
	}
	newtyp = getTypeUnlocked("uint", reflect.TypeFor[uint]())
	if newtyp != tUint.gobType() {
		t.Errorf("reregistration of %s got new type", newtyp.string())
	}
	newtyp = getTypeUnlocked("string", reflect.TypeFor[string]())
	if newtyp != tString.gobType() {

	case "bool":
		return reflect.TypeFor[bool]()
	case "nullbool":
		return reflect.TypeFor[NullBool]()
	case "int16":
		return reflect.TypeFor[int16]()
	case "nullint16":
		return reflect.TypeFor[NullInt16]()
	case "int32":
		return reflect.TypeFor[int32]()
	case "nullint32":
		return reflect.TypeFor[NullInt32]()
	case "string":
		return reflect.TypeFor[string]()
	case "nullstring":

var (
	gobEncoderInterfaceType        = reflect.TypeFor[GobEncoder]()
	gobDecoderInterfaceType        = reflect.TypeFor[GobDecoder]()
	binaryMarshalerInterfaceType   = reflect.TypeFor[encoding.BinaryMarshaler]()
	binaryUnmarshalerInterfaceType = reflect.TypeFor[encoding.BinaryUnmarshaler]()
	textMarshalerInterfaceType     = reflect.TypeFor[encoding.TextMarshaler]()
	textUnmarshalerInterfaceType   = reflect.TypeFor[encoding.TextUnmarshaler]()

// an identity into a SAN extension.
type IdentityType int

const (
	// TypeDNS represents a DNS name.
	TypeDNS IdentityType = iota
	// TypeIP represents an IP address.
	TypeIP
	// TypeURI represents a universal resource identifier.
	TypeURI
)

var (
	// Mapping from the type of an identity to the OID tag value for the X.509

                return asMutable().toString();
            }

            private StringBuilder asMutable() {
                String typeStr = type.toString();
                StringBuilder result = new StringBuilder(typeStr.length() + name.length() + 3);
                result.append(typeStr);
                result.append(" '");
                result.append(name);
                result.append('\'');
                return result;

	testCloneSeq[testStruct](t, cSeq(8))
}

func cSeq(stringOffsets ...uintptr) cloneSeq {
	return cloneSeq{stringOffsets: stringOffsets}
}

func testCloneSeq[T any](t *testing.T, want cloneSeq) {
	typName := reflect.TypeFor[T]().Name()
	typ := abi.TypeOf(*new(T))
	t.Run(typName, func(t *testing.T) {
		got := makeCloneSeq(typ)
		if !reflect.DeepEqual(got, want) {

	{CaseName: Name(""), in: `{"X": [1,2,3], "Y": 4}`, ptr: new(T), out: T{Y: 4}, err: &UnmarshalTypeError{"array", reflect.TypeFor[string](), 7, "T", "X"}},
	{CaseName: Name(""), in: `{"X": 23}`, ptr: new(T), out: T{}, err: &UnmarshalTypeError{"number", reflect.TypeFor[string](), 8, "T", "X"}},
	{CaseName: Name(""), in: `{"x": 1}`, ptr: new(tx), out: tx{}},
	{CaseName: Name(""), in: `{"x": 1}`, ptr: new(tx), out: tx{}},

	// There's no easy way to map from an ast.Expr to all the places that use them, so
	// we use reflect to find all such references.
	if len(badNils) > 0 {
		exprType := reflect.TypeFor[ast.Expr]()
		exprSliceType := reflect.TypeFor[[]ast.Expr]()
		walk(f, func(n any) {
			if n == nil {
				return
			}
			v := reflect.ValueOf(n)
			if v.Type().Kind() != reflect.Pointer {
				return
			}
			if v.IsNil() {