workqueue = append(workqueue, nodePath[_Node, _Edge]{a, ve})
					visited[a] = true
				}
			}
		}
	}
	return nil, errors.New("no path")
}

type direction int

const (
	north direction = iota
	ne
	east
	se
	south
	sw
	west
	nw
	up
	down
)

func (dir direction) String() string {
	strs := map[direction]string{
		north: "north",
		ne:    "ne",

	defer func(env environment, indent int) {
		check.environment = env
		check.indent = indent
	}(check.environment, check.indent)
	check.environment = environment{
		decl:  decl,
		scope: sig.scope,
		iota:  iota,
		sig:   sig,
	}
	check.indent = 0

	check.stmtList(0, body.List)

	if check.hasLabel {
		check.labels(body)
	}

	if sig.results.Len() > 0 && !check.isTerminating(body, "") {

const flagKeepConn = 1

const (
	maxWrite = 65535 // maximum record body
	maxPad   = 255
)

const (
	roleResponder = iota + 1 // only Responders are implemented.
	roleAuthorizer
	roleFilter
)

const (
	statusRequestComplete = iota
	statusCantMultiplex
	statusOverloaded
	statusUnknownRole
)

type header struct {
	Version       uint8
	Type          recType

// ssState is used for reporting the segment state after inserting a rune.
// It is returned by streamSafe.next.
type ssState int

const (
	// Indicates a rune was successfully added to the segment.
	ssSuccess ssState = iota
	// Indicates a rune starts a new segment and should not be added.
	ssStarter
	// Indicates a rune caused a segment overflow and a CGJ should be inserted.
	ssOverflow
)

)

const (
	// do not reorder
	FILE_NOTIFY_CHANGE_FILE_NAME = 1 << iota
	FILE_NOTIFY_CHANGE_DIR_NAME
	FILE_NOTIFY_CHANGE_ATTRIBUTES
	FILE_NOTIFY_CHANGE_SIZE
	FILE_NOTIFY_CHANGE_LAST_WRITE
	FILE_NOTIFY_CHANGE_LAST_ACCESS
	FILE_NOTIFY_CHANGE_CREATION
)

const (
	// do not reorder
	FILE_ACTION_ADDED = iota + 1
	FILE_ACTION_REMOVED
	FILE_ACTION_MODIFIED
	FILE_ACTION_RENAMED_OLD_NAME

// 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.

import (
	"path"
	"sort"
	"strings"

	"cmd/compile/internal/base"
	"cmd/compile/internal/ir"
	"cmd/compile/internal/objw"
	"cmd/compile/internal/types"
	"cmd/internal/obj"
)

const (
	embedUnknown = iota
	embedBytes
	embedString
	embedFiles
)

func embedFileList(v *ir.Name, kind int) []string {
	// Build list of files to store.
	have := make(map[string]bool)
	var list []string
	for _, e := range *v.Embed {

		// TODO(gri) We may also want to augment the error message and
		// refer to the position (pos) in the original expression.
		if check.errpos.Pos().IsKnown() {
			assert(check.iota != nil)
			pos = check.errpos
		}

		// Report invalid syntax trees explicitly.
		if code == InvalidSyntaxTree {
			msg = "invalid syntax tree: " + msg
		}

	b = 1 << iota  // b == 2  (iota == 1)
	c = 3          // c == 3  (iota == 2, unused)
	d = 1 << iota  // d == 8  (iota == 3)
)

const (
	u         = iota * 42  // u == 0     (untyped integer constant)
	v float64 = iota * 42  // v == 42.0  (float64 constant)
	w         = iota * 42  // w == 84    (untyped integer constant)
)

const x = iota  // x == 0

	8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
	8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
	8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8,
}

type quantIndex int

const (
	quantIndexLuminance quantIndex = iota
	quantIndexChrominance
	nQuantIndex
)

// unscaledQuant are the unscaled quantization tables in zig-zag order. Each
// encoder copies and scales the tables according to its quality parameter.