// precedence serves as "catch-all" precedence for selector,
// indexing, and other operator and delimiter tokens.
const (
	LowestPrec  = 0 // non-operators
	UnaryPrec   = 6
	HighestPrec = 7
)

// Precedence returns the operator precedence of the binary
// operator op. If op is not a binary operator, the result
// is LowestPrecedence.
func (op Token) Precedence() int {

		p.expr(x.Value)

	case *ast.StarExpr:
		const prec = token.UnaryPrec
		if prec < prec1 {
			// parenthesis needed
			p.print(token.LPAREN)
			p.print(token.MUL)
			p.expr(x.X)
			p.print(token.RPAREN)
		} else {
			// no parenthesis needed
			p.print(token.MUL)
			p.expr(x.X)
		}

	case *ast.UnaryExpr:
		const prec = token.UnaryPrec
		if prec < prec1 {
			// parenthesis needed

		{"STRING", Const, 0},
		{"STRUCT", Const, 0},
		{"SUB", Const, 0},
		{"SUB_ASSIGN", Const, 0},
		{"SWITCH", Const, 0},
		{"TILDE", Const, 18},
		{"TYPE", Const, 0},
		{"Token", Type, 0},
		{"UnaryPrec", Const, 0},
		{"VAR", Const, 0},
		{"XOR", Const, 0},
		{"XOR_ASSIGN", Const, 0},
	},
	"go/types": {
		{"(*Alias).Obj", Method, 22},
		{"(*Alias).String", Method, 22},

pkg go/token, const STRUCT Token
pkg go/token, const SUB Token
pkg go/token, const SUB_ASSIGN Token
pkg go/token, const SWITCH Token
pkg go/token, const TYPE Token
pkg go/token, const UnaryPrec ideal-int
pkg go/token, const VAR Token
pkg go/token, const XOR Token
pkg go/token, const XOR_ASSIGN Token
pkg go/token, func Lookup(string) Token
pkg go/token, func NewFileSet() *FileSet

pkg go/token, const STRING = 9
pkg go/token, const STRUCT = 82
pkg go/token, const SUB = 13
pkg go/token, const SUB_ASSIGN = 24
pkg go/token, const SWITCH = 83
pkg go/token, const TYPE = 84
pkg go/token, const UnaryPrec = 6
pkg go/token, const VAR = 85
pkg go/token, const XOR = 19
pkg go/token, const XOR_ASSIGN = 30
pkg hash/adler32, const Size = 4
pkg hash/crc32, const Castagnoli = 2197175160