}

// condResult is the result of an HTTP request precondition check.
// See https://tools.ietf.org/html/rfc7232 section 3.
type condResult int

const (
	condNone condResult = iota
	condTrue
	condFalse
)

func checkIfMatch(w ResponseWriter, r *Request) condResult {
	im := r.Header.Get("If-Match")
	if im == "" {
		return condNone
	}
	for {
		im = textproto.TrimString(im)

type unifyMode uint

const (
	// If assign is set, we are unifying types involved in an assignment:
	// they may match inexactly at the top, but element types must match
	// exactly.
	assign unifyMode = 1 << iota

	// If exact is set, types unify if they are identical (or can be
	// made identical with suitable arguments for type parameters).
	// Otherwise, a named type and a type literal unify if their

	onceReadImports sync.Once
	savedImports    []rawImport // saved imports so that they're only read once
}

// Offsets for fields in the sourceFile.
const (
	sourceFileError = 4 * iota
	sourceFileParseError
	sourceFileSynopsis
	sourceFileName
	sourceFilePkgName
	sourceFileIgnoreFile
	sourceFileBinaryOnly
	sourceFileCgoDirectives
	sourceFileGoBuildConstraint

const (
	zero form = iota
	finite
	inf
)

// RoundingMode determines how a [Float] value is rounded to the
// desired precision. Rounding may change the [Float] value; the
// rounding error is described by the [Float]'s [Accuracy].
type RoundingMode byte

// These constants define supported rounding modes.
const (
	ToNearestEven RoundingMode = iota // == IEEE 754-2008 roundTiesToEven

		return ""
	}
	return string(js)
}

// BuildMode specifies the build mode:
// are we just building things or also installing the results?
type BuildMode int

const (
	ModeBuild BuildMode = iota
	ModeInstall
	ModeBuggyInstall

	ModeVetOnly = 1 << 8
)

// NewBuilder returns a new Builder ready for use.
//
// If workDir is the empty string, NewBuilder creates a WorkDir if needed

var machohdr MachoHdr

var load []MachoLoad

var machoPlatform MachoPlatform

var seg [16]MachoSeg

var nseg int

var ndebug int

var nsect int

const (
	SymKindLocal = 0 + iota
	SymKindExtdef
	SymKindUndef
	NumSymKind
)

var nkind [NumSymKind]int

var sortsym []loader.Sym

var nsortsym int

// Amount of space left for adding load commands

		return c - '0'
	case 'a' <= c && c <= 'f':
		return c - 'a' + 10
	case 'A' <= c && c <= 'F':
		return c - 'A' + 10
	}
	return 0
}

type encoding int

const (
	encodePath encoding = 1 + iota
	encodePathSegment
	encodeHost
	encodeZone
	encodeUserPassword
	encodeQueryComponent
	encodeFragment
)

type EscapeError string

func (e EscapeError) Error() string {

type color uint32

// An object may be painted in one of three colors.
// Color values other than white or black are considered grey.
const (
	white color = iota
	black
	grey // must be > white and black
)

func (c color) String() string {
	switch c {
	case white:
		return "white"
	case black:
		return "black"
	default:
		return "grey"
	}

// mostly duplicating state that is manipulated under lock in pollDesc.
// The one exception is the pollEventErr bit, which is maintained only
// in the pollInfo.
type pollInfo uint32

const (
	pollClosing = 1 << iota
	pollEventErr
	pollExpiredReadDeadline
	pollExpiredWriteDeadline
	pollFDSeq // 20 bit field, low 20 bits of fdseq field
)

const (
	pollFDSeqBits = 20                   // number of bits in pollFDSeq

// ErrorHandling defines how [FlagSet.Parse] behaves if the parse fails.
type ErrorHandling int

// These constants cause [FlagSet.Parse] to behave as described if the parse fails.
const (
	ContinueOnError ErrorHandling = iota // Return a descriptive error.
	ExitOnError                          // Call os.Exit(2) or for -h/-help Exit(0).
	PanicOnError                         // Call panic with a descriptive error.
)