// cXORCase can result in large series of identical trie values. This, in turn,
// allows us to better compress the trie blocks.
const (
	cUncased          info = iota // 000
	cTitle                        // 001
	cLower                        // 010
	cUpper                        // 011
	cIgnorableUncased             // 100

	//	for TYPE_FCONST, a float64
	//	for TYPE_BRANCH, a *Prog (optional)
	//	for TYPE_TEXTSIZE, an int32 (optional)
	Val interface{}
}

type AddrName int8

const (
	NAME_NONE AddrName = iota
	NAME_EXTERN
	NAME_STATIC
	NAME_AUTO
	NAME_PARAM
	// A reference to name@GOT(SB) is a reference to the entry in the global offset
	// table for 'name'.
	NAME_GOTREF

	return w.dot
}

func (w *Writer) closeDot() {
	if w.dot != nil {
		w.dot.Close() // sets w.dot = nil
	}
}

type dotWriter struct {
	w     *Writer
	state int
}

const (
	wstateBegin     = iota // initial state; must be zero
	wstateBeginLine        // beginning of line
	wstateCR               // wrote \r (possibly at end of line)
	wstateData             // writing data in middle of line
)

// AlgKind describes the kind of algorithms used for comparing and
// hashing a Type.
type AlgKind int8

//go:generate stringer -type AlgKind -trimprefix A alg.go

const (
	AUNK   AlgKind = iota
	ANOEQ          // Types cannot be compared
	ANOALG         // implies ANOEQ, and in addition has a part that is marked Noalg
	AMEM           // Type can be compared/hashed as regular memory.

// statuses.
type traceGoStatus uint8

const (
	traceGoBad traceGoStatus = iota
	traceGoRunnable
	traceGoRunning
	traceGoSyscall
	traceGoWaiting
)

// traceProcStatus is the status of a P.
//
// They mostly correspond to the various P statuses.
type traceProcStatus uint8

const (
	traceProcBad traceProcStatus = iota
	traceProcRunning
	traceProcIdle
	traceProcSyscall

	// information.
	SysType() SysType
}

// A SysType represents a type of operating system-specific
// information.
type SysType int

const (
	SysMetrics SysType = iota
	SysStats
)

// ParseRIB parses b as a routing information base and returns a list
// of routing messages.
func ParseRIB(typ RIBType, b []byte) ([]Message, error) {
	if !typ.parseable() {

	ObjFlagStd                      // standard library package
)

// Sym.Flag
const (
	SymFlagDupok = 1 << iota
	SymFlagLocal
	SymFlagTypelink
	SymFlagLeaf
	SymFlagNoSplit
	SymFlagReflectMethod
	SymFlagGoType
)

// Sym.Flag2
const (
	SymFlagUsedInIface = 1 << iota
	SymFlagItab
	SymFlagDict
	SymFlagPkgInit
	SymFlagLinkname
	SymFlagABIWrapper
)

//
// Possible build modes are the same as those for the -buildmode flag
// in cmd/go, and are documented in 'go help buildmode'.
type BuildMode uint8

const (
	BuildModeUnset BuildMode = iota
	BuildModeExe
	BuildModePIE
	BuildModeCArchive
	BuildModeCShared
	BuildModeShared
	BuildModePlugin
)

// Set implements flag.Value to set the build mode based on the argument
// to the -buildmode flag.

	Parent        uint32
}

// CounterMode tracks the "flavor" of the coverage counters being
// used in a given coverage-instrumented program.
type CounterMode uint8

const (
	CtrModeInvalid  CounterMode = iota
	CtrModeSet                  // "set" mode
	CtrModeCount                // "count" mode
	CtrModeAtomic               // "atomic" mode
	CtrModeRegOnly              // registration-only pseudo-mode

type Arg interface {
	isArg()
	String() string
}

// A Reg is a single register.
// The zero value denotes W0, not the absence of a register.
type Reg uint16

const (
	W0 Reg = iota
	W1
	W2
	W3
	W4
	W5
	W6
	W7
	W8
	W9
	W10
	W11
	W12
	W13
	W14
	W15
	W16
	W17
	W18
	W19
	W20
	W21
	W22
	W23
	W24
	W25
	W26
	W27
	W28