// inserted for "pointerness" are not evaluated until the function is
// called, so a T.f or (*T).f expression never panics.
type SelectionKind int

const (
	FieldVal   SelectionKind = iota // x.f is a struct field selector
	MethodVal                       // x.f is a method selector
	MethodExpr                      // x.f is a method expression
)

// A Selection describes a selector expression x.f.

package os

import (
	"internal/bytealg"
	"internal/filepathlite"
	"io"
	"io/fs"
	"slices"
)

type readdirMode int

const (
	readdirName readdirMode = iota
	readdirDirEntry
	readdirFileInfo
)

// Readdir reads the contents of the directory associated with file and
// returns a slice of up to n [FileInfo] values, as would be returned

	// _Gscanwaiting -> _Gscanrunnable are actually okay because
	// they don't affect stack ownership.

	// _Gidle means this goroutine was just allocated and has not
	// yet been initialized.
	_Gidle = iota // 0

	// _Grunnable means this goroutine is on a run queue. It is
	// not currently executing user code. The stack is not owned.
	_Grunnable // 1

	// _Grunning means this goroutine may execute user code. The

				// init expression/func declaration which contains
				// them: use existing package-level declaration info.
				decl := check.decl // capture for use in closure below
				iota := check.iota // capture for use in closure below (go.dev/issue/22345)
				// Don't type-check right away because the function may
				// be part of a type definition to which the function

	}
	return "interface conversion: " + cs + " is not " + as +
		": missing method " + e.missingMethod
}

// itoa converts val to a decimal representation. The result is
// written somewhere within buf and the location of the result is returned.
// buf must be at least 20 bytes.
//
//go:nosplit
func itoa(buf []byte, val uint64) []byte {
	i := len(buf) - 1
	for val >= 10 {
		buf[i] = byte(val%10 + '0')
		i--
		val /= 10

//
// Note that traceBlockReasons should not be compared, since reasons that are
// distinct by name may *not* be distinct by value.
type traceBlockReason uint8

const (
	traceBlockGeneric traceBlockReason = iota
	traceBlockForever
	traceBlockNet
	traceBlockSelect
	traceBlockCondWait
	traceBlockSync
	traceBlockChanSend
	traceBlockChanRecv
	traceBlockGCMarkAssist
	traceBlockGCSweep
	traceBlockSystemGoroutine

		}
		if e != ERROR_INSUFFICIENT_BUFFER {
			return "", e
		}
		if n <= uint32(len(b)) {
			return "", e
		}
	}
}

const (
	// do not reorder
	NetSetupUnknownStatus = iota
	NetSetupUnjoined
	NetSetupWorkgroupName
	NetSetupDomainName
)

type UserInfo10 struct {
	Name       *uint16
	Comment    *uint16
	UsrComment *uint16
	FullName   *uint16
}

	}
	if mapfast(t) == mapslow {
		return typecheck.LookupRuntime(name, t.Key(), t.Elem(), t.Key())
	}
	return typecheck.LookupRuntime(name, t.Key(), t.Elem())
}

const (
	mapslow = iota
	mapfast32
	mapfast32ptr
	mapfast64
	mapfast64ptr
	mapfaststr
	nmapfast
)

type mapnames [nmapfast]string

func mkmapnames(base string, ptr string) mapnames {

// It is used to identify whether a flag appears;
// the standard boolean flag cannot
// distinguish missing from unset.
// It also satisfies flag.Value.
type triState int

const (
	unset triState = iota
	setTrue
	setFalse
)

func triStateFlag(name string, value triState, usage string) *triState {
	flag.Var(&value, name, usage)
	return &value
}

// SecurityMode specifies whether a function should make network
// calls using insecure transports (eg, plain text HTTP).
// The zero value is "secure".
type SecurityMode int

const (
	SecureOnly      SecurityMode = iota // Reject plain HTTP; validate HTTPS.
	DefaultSecurity                     // Allow plain HTTP if explicit; validate HTTPS.
	Insecure                            // Allow plain HTTP if not explicitly HTTPS; skip HTTPS validation.
)