func isFloat(t Type) bool          { return isBasic(t, IsFloat) }
func isComplex(t Type) bool        { return isBasic(t, IsComplex) }
func isNumeric(t Type) bool        { return isBasic(t, IsNumeric) }
func isString(t Type) bool         { return isBasic(t, IsString) }
func isIntegerOrFloat(t Type) bool { return isBasic(t, IsInteger|IsFloat) }
func isConstType(t Type) bool      { return isBasic(t, IsConstType) }

func badFormatAt(info *types.Info, e ast.Expr) int {
	tv, ok := info.Types[e]
	if !ok { // no type info, assume good
		return -1
	}

	t, ok := tv.Type.(*types.Basic) // sic, no unalias
	if !ok || t.Info()&types.IsString == 0 {
		return -1
	}

	if tv.Value == nil {
		return -1
	}

	return strings.Index(constant.StringVal(tv.Value), badFormat)

// a string, the result is of type (possibly untyped) string.
func coreString(t Type) Type {
	t = Unalias(t)
	tpar, _ := t.(*TypeParam)
	if tpar == nil {
		return under(t) // string or untyped string
	}

	var su Type
	hasString := false
	if tpar.underIs(func(u Type) bool {
		if u == nil {
			return false
		}
		if isString(u) {
			u = NewSlice(universeByte)

		if check.recordTypes() {
			check.recordBuiltinType(call.Fun, makeSig(x.typ, slice))
		}

	case _String:
		// unsafe.String(ptr *byte, len IntegerType) string
		check.verifyVersionf(call.Fun, go1_20, "unsafe.String")

		check.assignment(x, NewPointer(universeByte), "argument to unsafe.String")
		if x.mode == invalid {
			return
		}

		y := args[1]

}

const (
	mapslow = iota
	mapfast32
	mapfast32ptr
	mapfast64
	mapfast64ptr
	mapfaststr
	nmapfast
)

type mapnames [nmapfast]string

func mkmapnames(base string, ptr string) mapnames {
	return mapnames{base, base + "_fast32", base + "_fast32" + ptr, base + "_fast64", base + "_fast64" + ptr, base + "_faststr"}
}

var mapaccess1 = mkmapnames("mapaccess1", "")

    auto value = flatbuffer_vector[i];

    if (value.IsBool()) {
      mlir_vector.push_back(BuildVhloBooleanV1Attr(value.AsBool(), builder));
    } else if (value.IsString()) {
      mlir_vector.push_back(
          BuildVhloStringV1Attr(value.AsString().str(), builder));
    } else if (value.IsInt()) {
      mlir_vector.push_back(BuildVhloIntV1Attr(value.AsInt64(), builder));
    } else if (value.IsFloat()) {

		// StdSizes.Alignof won't be called for them.
		assert(!isTypeParam(T))
		return s.WordSize
	case *Basic:
		// Strings are like slices and interfaces.
		if t.Info()&IsString != 0 {
			return s.WordSize
		}
	case *TypeParam, *Union:
		panic("unreachable")
	}
	a := s.Sizeof(T) // may be 0 or negative
	// spec: "For a variable x of any type: unsafe.Alignof(x) is at least 1."
	if a < 1 {

		if check.recordTypes() {
			check.recordBuiltinType(call.Fun, makeSig(x.typ, slice))
		}

	case _String:
		// unsafe.String(ptr *byte, len IntegerType) string
		check.verifyVersionf(call.Fun, go1_20, "unsafe.String")

		check.assignment(x, NewPointer(universeByte), "argument to unsafe.String")
		if x.mode == invalid {
			return
		}

		y := args[1]

		// StdSizes.Alignof won't be called for them.
		assert(!isTypeParam(T))
		return s.WordSize
	case *Basic:
		// Strings are like slices and interfaces.
		if t.Info()&IsString != 0 {
			return s.WordSize
		}
	case *TypeParam, *Union:
		panic("unreachable")
	}
	a := s.Sizeof(T) // may be 0 or negative
	// spec: "For a variable x of any type: unsafe.Alignof(x) is at least 1."
	if a < 1 {

            type.isULong -> KaConstantValue.KaUnsignedLongConstantValue((value as Number).toLong().toULong(), expression)
            type.isString -> KaConstantValue.KaStringConstantValue(value.toString(), expression)
            type.isFloat -> KaConstantValue.KaFloatConstantValue((value as Number).toFloat(), expression)