var (
	types                = make(map[reflect.Type]gobType, 32)
	idToTypeSlice        = make([]gobType, 1, firstUserId)
	builtinIdToTypeSlice [firstUserId]gobType // set in init() after builtins are established
)

func idToType(id typeId) gobType {
	if id < 0 || int(id) >= len(idToTypeSlice) {
		return nil
	}
	return idToTypeSlice[id]
}

func builtinIdToType(id typeId) gobType {

	}
	return s[i+1:]
}

func toRType(t *abi.Type) rtype {
	return rtype{t}
}

func elem(t *abi.Type) *abi.Type {
	et := t.Elem()
	if et != nil {
		return et
	}
	panic("reflect: Elem of invalid type " + toRType(t).String())
}

func (t rtype) Elem() Type {
	return toType(elem(t.common()))
}

func (t rtype) In(i int) Type {
	tt := t.Type.FuncType()
	if tt == nil {

func TypeNode(t *types.Type) Node {
	if n := t.Obj(); n != nil {
		if n.Type() != t {
			base.Fatalf("type skew: %v has type %v, but expected %v", n, n.Type(), t)
		}
		return n.(*Name)
	}
	return newTypeNode(t)
}

// A DynamicType represents a type expression whose exact type must be
// computed dynamically.
type DynamicType struct {
	miniExpr

func typeOffFor(t *abi.Type, off aTypeOff) *abi.Type {
	return toRType(t).typeOff(off)
}

func (t *interfaceType) typeOff(off aTypeOff) *abi.Type {
	return toRType(&t.Type).typeOff(off)
}

func (t *interfaceType) common() *abi.Type {
	return &t.Type
}

func (t *interfaceType) uncommon() *abi.UncommonType {
	return t.Uncommon()
}

// mapType represents a map type.
type mapType struct {

            // 000 0105673E ABS    notype       Static       | @comp.id
            // 001 80000191 ABS    notype       Static       | @feat.00
            // 002 00000000 SECT1  notype       Static       | .drectve
            // 005 00000000 SECT2  notype       Static       | .debug$S
            // 008 00000000 SECT3  notype       Static       | .debug$T
            // 00B 00000000 SECT4  notype       Static       | .text$mn

	if n.Type().SoleComponent() == nil {
		return n
	}
	// Keep in sync with cmd/compile/internal/types/type.go:Type.SoleComponent.
	for {
		switch {
		case n.Type().IsStruct():
			if n.Type().Field(0).Sym.IsBlank() {
				// Treat blank fields as the zero value as the Go language requires.
				n = typecheck.TempAt(base.Pos, ir.CurFunc, n.Type().Field(0).Type)

        and:
        def parser = NotationParserBuilder.toType(String.class).fromCharSequence(converter).toComposite()

        expect:
        parser.parseNotation(new StringBuilder("12")) == "[12]"
    }

    def "can add a converter that converts CharSequence notations when the target type is String"() {
        def parser = NotationParserBuilder.toType(String.class).fromCharSequence().toComposite()

        expect:

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

package main

func init() {
	addTestCases(gotypesTests, gotypes)
}

var gotypesTests = []testCase{
	{
		Name: "gotypes.0",
		In: `package main

import "golang.org/x/tools/go/types"
import "golang.org/x/tools/go/exact"

var _ = exact.Kind

func f() {
	_ = exact.MakeBool(true)
}
`,

)

func setDefaultSockopts(s, family, sotype int, ipv6only bool) error {
	if family == syscall.AF_INET6 && sotype != syscall.SOCK_RAW {
		// Allow both IP versions even if the OS default
		// is otherwise. Note that some operating systems
		// never admit this option.
		syscall.SetsockoptInt(s, syscall.IPPROTO_IPV6, syscall.IPV6_V6ONLY, boolint(ipv6only))
	}
	if (sotype == syscall.SOCK_DGRAM || sotype == syscall.SOCK_RAW) && family != syscall.AF_UNIX {

		}
	}
	if family == syscall.AF_INET6 && sotype != syscall.SOCK_RAW && supportsIPv4map() {
		// Allow both IP versions even if the OS default
		// is otherwise. Note that some operating systems
		// never admit this option.
		syscall.SetsockoptInt(s, syscall.IPPROTO_IPV6, syscall.IPV6_V6ONLY, boolint(ipv6only))
	}
	if (sotype == syscall.SOCK_DGRAM || sotype == syscall.SOCK_RAW) && family != syscall.AF_UNIX {
		// Allow broadcast.