list, typ.isStruct = fields(spec.Type)
	for _, field := range list {
		if len(field.Names) == 0 {
			r.recordAnonymousField(typ, field.Type)
		}
	}
}

// isPredeclared reports whether n denotes a predeclared type.
func (r *reader) isPredeclared(n string) bool {
	return predeclaredTypes[n] && r.types[n] == nil
}

// readFunc processes a func or method declaration.
func (r *reader) readFunc(fun *ast.FuncDecl) {

		// which are not filtered for top-level function declarations.
		if name := s.Name.Name; token.IsExported(name) {
			r.filterType(r.lookupType(s.Name.Name), s.Type)
			return true
		} else if IsPredeclared(name) {
			if r.shadowedPredecl == nil {
				r.shadowedPredecl = make(map[string]bool)
			}
			r.shadowedPredecl[name] = true
		}
	}
	return false
}

pkg expvar, method (*Float) Value() float64
pkg expvar, method (Func) Value() interface{}
pkg expvar, method (*Int) Value() int64
pkg expvar, method (*String) Value() string
pkg go/doc, func IsPredeclared(string) bool
pkg go/types, func Default(Type) Type
pkg go/types, func IdenticalIgnoreTags(Type, Type) bool
pkg math/big, method (*Float) Scan(fmt.ScanState, int32) error
pkg math/big, method (*Int) Sqrt(*Int) *Int

		{"Func.Examples", Field, 14},
		{"Func.Level", Field, 0},
		{"Func.Name", Field, 0},
		{"Func.Orig", Field, 0},
		{"Func.Recv", Field, 0},
		{"IllegalPrefixes", Var, 1},
		{"IsPredeclared", Func, 8},
		{"Mode", Type, 0},
		{"New", Func, 0},
		{"NewFromFiles", Func, 14},
		{"Note", Type, 1},
		{"Note.Body", Field, 1},
		{"Note.End", Field, 1},
		{"Note.Pos", Field, 1},