func TestNewSliceType(t *testing.T) {
capSize := 2 * unsafe.Sizeof(reflect.SliceHeader{}.Cap)
s_t, err := ffi.NewStructType("s_0", []ffi.Field{{"a", ffi.C_int32}})
if err != nil {
t.Errorf(err.Error())
}
p_s_t, err := ffi.NewPointerType(s_t)
if err != nil {
t.Errorf(err.Error())
}
for _, table := range []struct {
name string
elem ffi.Type
}{
{"uint8[]", ffi.C_uint8},
{"uint16[]", ffi.C_uint16},
{"uint32[]", ffi.C_uint32},
{"uint64[]", ffi.C_uint64},
{"int8[]", ffi.C_int8},
{"int16[]", ffi.C_int16},
{"int32[]", ffi.C_int32},
{"int64[]", ffi.C_int64},
{"float[]", ffi.C_float},
{"double[]", ffi.C_double},
{"s_0[]", s_t},
{"s_0*[]", p_s_t},
} {
typ, err := ffi.NewSliceType(table.elem)
if err != nil {
t.Errorf(err.Error())
}
eq(t, table.name, typ.Name())
eq(t, table.elem, typ.Elem())
eq(t, capSize+ffi.C_pointer.Size(), typ.Size())
//eq(t, table.n, typ.Len())
eq(t, ffi.Slice, typ.Kind())
}
}
func TestEncoderDecoder(t *testing.T) {
arr_10, _ := ffi.NewArrayType(10, ffi.C_int32)
sli_10, _ := ffi.NewSliceType(ffi.C_int32)
const sz = 10
{
const val = 42
for _, v := range []interface{}{
int(val),
int8(val),
int16(val),
int32(val),
int64(val),
} {
ct := ffi.TypeOf(v)
cv := ffi.New(ct)
enc := ffi.NewEncoder(cv)
err := enc.Encode(v)
if err != nil {
t.Errorf(err.Error())
}
eq(t, int64(val), cv.Int())
// now decode back
vv := reflect.New(reflect.TypeOf(v))
dec := ffi.NewDecoder(cv)
err = dec.Decode(vv.Interface())
if err != nil {
t.Errorf(err.Error())
}
eq(t, vv.Elem().Int(), cv.Int())
}
}
{
const val = 42
for _, v := range []interface{}{
uint(val),
uint8(val),
uint16(val),
uint32(val),
uint64(val),
} {
ct := ffi.TypeOf(v)
cv := ffi.New(ct)
enc := ffi.NewEncoder(cv)
err := enc.Encode(v)
if err != nil {
t.Errorf(err.Error())
}
eq(t, uint64(val), cv.Uint())
// now decode back
vv := reflect.New(reflect.TypeOf(v))
dec := ffi.NewDecoder(cv)
err = dec.Decode(vv.Interface())
if err != nil {
t.Errorf(err.Error())
}
eq(t, vv.Elem().Uint(), cv.Uint())
}
}
{
const val = 42.0
for _, v := range []interface{}{
float32(val),
float64(val),
} {
ct := ffi.TypeOf(v)
cv := ffi.New(ct)
enc := ffi.NewEncoder(cv)
err := enc.Encode(v)
if err != nil {
t.Errorf(err.Error())
}
eq(t, float64(val), cv.Float())
// now decode back
vv := reflect.New(reflect.TypeOf(v))
dec := ffi.NewDecoder(cv)
err = dec.Decode(vv.Interface())
if err != nil {
t.Errorf(err.Error())
}
eq(t, vv.Elem().Float(), cv.Float())
}
}
{
const val = 42
ctyp, err := ffi.NewStructType(
"struct_ints",
[]ffi.Field{
{"F1", ffi.C_int8},
{"F2", ffi.C_int16},
{"F3", ffi.C_int32},
{"F4", ffi.C_int64},
})
if err != nil {
t.Errorf(err.Error())
}
cval := ffi.New(ctyp)
gval := struct {
F1 int8
F2 int16
F3 int32
F4 int64
}{val + 1, val + 1, val + 1, val + 1}
err = ffi.Associate(ctyp, reflect.TypeOf(gval))
if err != nil {
t.Errorf(err.Error())
}
enc := ffi.NewEncoder(cval)
err = enc.Encode(gval)
if err != nil {
t.Errorf(err.Error())
}
rval := reflect.ValueOf(gval)
for i := 0; i < ctyp.NumField(); i++ {
eq(t, rval.Field(i).Int(), cval.Field(i).Int())
}
// now decode back
vv := reflect.New(rval.Type())
dec := ffi.NewDecoder(cval)
err = dec.Decode(vv.Interface())
if err != nil {
t.Errorf(err.Error())
}
rval = vv.Elem()
for i := 0; i < ctyp.NumField(); i++ {
eq(t, rval.Field(i).Int(), cval.Field(i).Int())
}
}
{
const val = 42
ctyp, err := ffi.NewStructType(
"struct_ints_arr10",
[]ffi.Field{
{"F1", ffi.C_int8},
{"F2", ffi.C_int16},
{"A1", arr_10},
{"F3", ffi.C_int32},
{"F4", ffi.C_int64},
})
if err != nil {
t.Errorf(err.Error())
}
cval := ffi.New(ctyp)
gval := struct {
F1 int8
F2 int16
A1 [sz]int32
F3 int32
F4 int64
}{
val + 1, val + 1,
[sz]int32{
val, val, val, val, val,
val, val, val, val, val,
},
val + 1, val + 1,
}
err = ffi.Associate(ctyp, reflect.TypeOf(gval))
if err != nil {
t.Errorf(err.Error())
}
enc := ffi.NewEncoder(cval)
err = enc.Encode(gval)
if err != nil {
t.Errorf(err.Error())
}
rval := reflect.ValueOf(gval)
eq(t, rval.Field(0).Int(), cval.Field(0).Int())
eq(t, rval.Field(1).Int(), cval.Field(1).Int())
eq(t, rval.Field(3).Int(), cval.Field(3).Int())
eq(t, rval.Field(4).Int(), cval.Field(4).Int())
rfield := cval.Field(2)
cfield := cval.Field(2)
eq(t, rfield.Len(), cfield.Len())
for i := 0; i < cfield.Len(); i++ {
eq(t, rfield.Index(i).Int(), cfield.Index(i).Int())
}
// now decode back
vv := reflect.New(rval.Type())
dec := ffi.NewDecoder(cval)
err = dec.Decode(vv.Interface())
if err != nil {
t.Errorf(err.Error())
}
rval = vv.Elem()
eq(t, rval.Field(0).Int(), cval.Field(0).Int())
eq(t, rval.Field(1).Int(), cval.Field(1).Int())
eq(t, rval.Field(3).Int(), cval.Field(3).Int())
eq(t, rval.Field(4).Int(), cval.Field(4).Int())
rfield = cval.Field(2)
cfield = cval.Field(2)
eq(t, rfield.Len(), cfield.Len())
for i := 0; i < cfield.Len(); i++ {
eq(t, rfield.Index(i).Int(), cfield.Index(i).Int())
}
}
{
const val = 42
ctyp, err := ffi.NewStructType(
"struct_ints_sli10",
[]ffi.Field{
{"F1", ffi.C_int8},
{"F2", ffi.C_int16},
{"S1", sli_10},
{"F3", ffi.C_int32},
{"F4", ffi.C_int64},
})
if err != nil {
t.Errorf(err.Error())
}
cval := ffi.New(ctyp)
gval := struct {
F1 int8
F2 int16
S1 []int32
F3 int32
F4 int64
}{
val + 1, val + 1,
[]int32{
val, val, val, val, val,
val, val, val, val, val,
},
val + 1, val + 1,
}
err = ffi.Associate(ctyp, reflect.TypeOf(gval))
if err != nil {
t.Errorf(err.Error())
}
enc := ffi.NewEncoder(cval)
err = enc.Encode(gval)
if err != nil {
t.Errorf(err.Error())
}
rval := reflect.ValueOf(gval)
eq(t, rval.Field(0).Int(), cval.Field(0).Int())
eq(t, rval.Field(1).Int(), cval.Field(1).Int())
eq(t, rval.Field(3).Int(), cval.Field(3).Int())
eq(t, rval.Field(4).Int(), cval.Field(4).Int())
rfield := cval.Field(2)
cfield := cval.Field(2)
eq(t, rfield.Len(), cfield.Len())
for i := 0; i < cfield.Len(); i++ {
eq(t, rfield.Index(i).Int(), cfield.Index(i).Int())
}
// now decode back
vv := reflect.New(rval.Type())
dec := ffi.NewDecoder(cval)
err = dec.Decode(vv.Interface())
if err != nil {
t.Errorf(err.Error())
}
rval = vv.Elem()
eq(t, rval.Field(0).Int(), cval.Field(0).Int())
eq(t, rval.Field(1).Int(), cval.Field(1).Int())
eq(t, rval.Field(3).Int(), cval.Field(3).Int())
eq(t, rval.Field(4).Int(), cval.Field(4).Int())
rfield = cval.Field(2)
cfield = cval.Field(2)
eq(t, rfield.Len(), cfield.Len())
for i := 0; i < cfield.Len(); i++ {
eq(t, rfield.Index(i).Int(), cfield.Index(i).Int())
}
}
{
const val = 42
ctyp, err := ffi.NewArrayType(sz, ffi.C_int32)
if err != nil {
t.Errorf(err.Error())
}
cval := ffi.New(ctyp)
gval := [sz]int32{
val, val, val, val, val,
val, val, val, val, val,
}
err = ffi.Associate(ctyp, reflect.TypeOf(gval))
if err != nil {
t.Errorf(err.Error())
}
enc := ffi.NewEncoder(cval)
err = enc.Encode(gval)
if err != nil {
t.Errorf(err.Error())
}
for i := 0; i < cval.Type().Len(); i++ {
eq(t, int64(val), cval.Index(i).Int())
}
// now decode back
vv := reflect.New(reflect.TypeOf(gval))
dec := ffi.NewDecoder(cval)
err = dec.Decode(vv.Interface())
if err != nil {
t.Errorf(err.Error())
}
for i := 0; i < cval.Type().Len(); i++ {
eq(t, vv.Elem().Index(i).Int(), cval.Index(i).Int())
}
}
{
const val = 42
ctyp, err := ffi.NewArrayType(sz, ffi.C_float)
if err != nil {
t.Errorf(err.Error())
}
cval := ffi.New(ctyp)
gval := [sz]float32{
val, val, val, val, val,
val, val, val, val, val,
}
enc := ffi.NewEncoder(cval)
err = enc.Encode(gval)
if err != nil {
t.Errorf(err.Error())
}
for i := 0; i < cval.Type().Len(); i++ {
eq(t, float64(val), cval.Index(i).Float())
}
// now decode back
vv := reflect.New(reflect.TypeOf(gval))
dec := ffi.NewDecoder(cval)
err = dec.Decode(vv.Interface())
if err != nil {
t.Errorf(err.Error())
}
for i := 0; i < cval.Type().Len(); i++ {
eq(t, vv.Elem().Index(i).Float(), cval.Index(i).Float())
}
}
{
const val = 42
ctyp, err := ffi.NewSliceType(ffi.C_int32)
if err != nil {
t.Errorf(err.Error())
}
cval := ffi.MakeSlice(ctyp, sz, sz)
gval := []int32{
val, val, val, val, val,
val, val, val, val, val,
}
enc := ffi.NewEncoder(cval)
err = enc.Encode(gval)
if err != nil {
t.Errorf(err.Error())
}
for i := 0; i < cval.Len(); i++ {
eq(t, int64(val), cval.Index(i).Int())
}
// now decode back
vv := reflect.New(reflect.TypeOf(gval))
dec := ffi.NewDecoder(cval)
err = dec.Decode(vv.Interface())
if err != nil {
t.Errorf(err.Error())
}
for i := 0; i < cval.Len(); i++ {
eq(t, vv.Elem().Index(i).Int(), cval.Index(i).Int())
}
}
{
const val = 42
ctyp, err := ffi.NewSliceType(ffi.C_float)
if err != nil {
t.Errorf(err.Error())
}
cval := ffi.MakeSlice(ctyp, sz, sz)
gval := []float32{
val, val, val, val, val,
val, val, val, val, val,
}
enc := ffi.NewEncoder(cval)
err = enc.Encode(gval)
if err != nil {
t.Errorf(err.Error())
}
for i := 0; i < cval.Len(); i++ {
eq(t, float64(val), cval.Index(i).Float())
}
{
// now decode back
vv := reflect.New(reflect.TypeOf(gval))
dec := ffi.NewDecoder(cval)
err = dec.Decode(vv.Interface())
if err != nil {
t.Errorf(err.Error())
}
for i := 0; i < cval.Len(); i++ {
eq(t, vv.Elem().Index(i).Float(), cval.Index(i).Float())
}
}
}
}
func TestGetSetSliceValue(t *testing.T) {
const sz = 10
{
const val = 42
for _, tt := range []struct {
n string
t ffi.Type
val interface{}
}{
{"uint8[]", ffi.C_uint8, make([]uint8, sz)},
{"uint16[]", ffi.C_uint16, make([]uint16, sz)},
{"uint32[]", ffi.C_uint32, make([]uint32, sz)},
{"uint64[]", ffi.C_uint64, make([]uint64, sz)},
} {
ctyp, err := ffi.NewSliceType(tt.t)
if err != nil {
t.Errorf(err.Error())
}
cval := ffi.MakeSlice(ctyp, sz, sz)
eq(t, tt.n, cval.Type().Name())
eq(t, ctyp.Kind(), cval.Kind())
gtyp := reflect.TypeOf(tt.val)
gval := reflect.MakeSlice(gtyp, sz, sz)
eq(t, gval.Len(), cval.Len())
eq(t, int(sz), cval.Len())
for i := 0; i < gval.Len(); i++ {
eq(t, gval.Index(i).Uint(), cval.Index(i).Uint())
gval.Index(i).SetUint(val)
cval.Index(i).SetUint(val)
eq(t, gval.Index(i).Uint(), cval.Index(i).Uint())
}
}
}
{
const val = 42
for _, tt := range []struct {
n string
t ffi.Type
val interface{}
}{
{"int8[]", ffi.C_int8, make([]int8, sz)},
{"int16[]", ffi.C_int16, make([]int16, sz)},
{"int32[]", ffi.C_int32, make([]int32, sz)},
{"int64[]", ffi.C_int64, make([]int64, sz)},
} {
ctyp, err := ffi.NewSliceType(tt.t)
if err != nil {
t.Errorf(err.Error())
}
cval := ffi.MakeSlice(ctyp, sz, sz)
eq(t, tt.n, cval.Type().Name())
eq(t, ctyp.Kind(), cval.Kind())
gtyp := reflect.TypeOf(tt.val)
gval := reflect.MakeSlice(gtyp, sz, sz)
eq(t, gval.Len(), cval.Len())
eq(t, int(sz), cval.Len())
for i := 0; i < gval.Len(); i++ {
eq(t, gval.Index(i).Int(), cval.Index(i).Int())
gval.Index(i).SetInt(val)
cval.Index(i).SetInt(val)
eq(t, gval.Index(i).Int(), cval.Index(i).Int())
}
}
}
{
const val = -66.2
for _, tt := range []struct {
n string
t ffi.Type
val interface{}
}{
{"float[]", ffi.C_float, make([]float32, sz)},
{"double[]", ffi.C_double, make([]float64, sz)},
// FIXME: go has no long double equivalent
//{"long double[]", ffi.C_longdouble, make([]float128, sz)}
} {
ctyp, err := ffi.NewSliceType(tt.t)
if err != nil {
t.Errorf(err.Error())
}
cval := ffi.MakeSlice(ctyp, sz, sz)
eq(t, tt.n, cval.Type().Name())
eq(t, ctyp.Kind(), cval.Kind())
gtyp := reflect.TypeOf(tt.val)
gval := reflect.MakeSlice(gtyp, sz, sz)
eq(t, gval.Len(), cval.Len())
eq(t, int(sz), cval.Len())
for i := 0; i < gval.Len(); i++ {
eq(t, gval.Index(i).Float(), cval.Index(i).Float())
gval.Index(i).SetFloat(val)
cval.Index(i).SetFloat(val)
eq(t, gval.Index(i).Float(), cval.Index(i).Float())
}
}
}
// now test if slices can automatically grow...
{
const val = 42
for _, tt := range []struct {
n string
t ffi.Type
val interface{}
}{
{"uint8[]", ffi.C_uint8, make([]uint8, sz)},
{"uint16[]", ffi.C_uint16, make([]uint16, sz)},
{"uint32[]", ffi.C_uint32, make([]uint32, sz)},
{"uint64[]", ffi.C_uint64, make([]uint64, sz)},
} {
ctyp, err := ffi.NewSliceType(tt.t)
if err != nil {
t.Errorf(err.Error())
}
cval := ffi.MakeSlice(ctyp, 0, 0)
eq(t, tt.n, cval.Type().Name())
eq(t, ctyp.Kind(), cval.Kind())
gtyp := reflect.TypeOf(tt.val)
gval := reflect.MakeSlice(gtyp, sz, sz)
eq(t, int(0), cval.Len())
cval.SetValue(gval) // <---------
eq(t, int(sz), cval.Len())
eq(t, gval.Len(), cval.Len())
for i := 0; i < gval.Len(); i++ {
eq(t, gval.Index(i).Uint(), cval.Index(i).Uint())
gval.Index(i).SetUint(val)
cval.Index(i).SetUint(val)
eq(t, gval.Index(i).Uint(), cval.Index(i).Uint())
}
}
}
{
const val = 42
for _, tt := range []struct {
n string
t ffi.Type
val interface{}
}{
{"int8[]", ffi.C_int8, make([]int8, sz)},
{"int16[]", ffi.C_int16, make([]int16, sz)},
{"int32[]", ffi.C_int32, make([]int32, sz)},
{"int64[]", ffi.C_int64, make([]int64, sz)},
} {
ctyp, err := ffi.NewSliceType(tt.t)
if err != nil {
t.Errorf(err.Error())
}
cval := ffi.MakeSlice(ctyp, 0, 0)
eq(t, tt.n, cval.Type().Name())
eq(t, ctyp.Kind(), cval.Kind())
gtyp := reflect.TypeOf(tt.val)
gval := reflect.MakeSlice(gtyp, sz, sz)
eq(t, int(0), cval.Len())
cval.SetValue(gval) // <---------
eq(t, int(sz), cval.Len())
eq(t, gval.Len(), cval.Len())
for i := 0; i < gval.Len(); i++ {
eq(t, gval.Index(i).Int(), cval.Index(i).Int())
gval.Index(i).SetInt(val)
cval.Index(i).SetInt(val)
eq(t, gval.Index(i).Int(), cval.Index(i).Int())
}
}
}
{
const val = -66.2
for _, tt := range []struct {
n string
t ffi.Type
val interface{}
}{
{"float[]", ffi.C_float, make([]float32, sz)},
{"double[]", ffi.C_double, make([]float64, sz)},
// FIXME: go has no long double equivalent
//{"long double[]", ffi.C_longdouble, make([]float128, sz)}
} {
ctyp, err := ffi.NewSliceType(tt.t)
if err != nil {
t.Errorf(err.Error())
}
cval := ffi.MakeSlice(ctyp, 0, 0)
eq(t, tt.n, cval.Type().Name())
eq(t, ctyp.Kind(), cval.Kind())
gtyp := reflect.TypeOf(tt.val)
gval := reflect.MakeSlice(gtyp, sz, sz)
eq(t, int(0), cval.Len())
cval.SetValue(gval) // <---------
eq(t, int(sz), cval.Len())
eq(t, gval.Len(), cval.Len())
for i := 0; i < gval.Len(); i++ {
eq(t, gval.Index(i).Float(), cval.Index(i).Float())
gval.Index(i).SetFloat(val)
cval.Index(i).SetFloat(val)
eq(t, gval.Index(i).Float(), cval.Index(i).Float())
}
}
}
}
func TestGetSetStructWithSliceValue(t *testing.T) {
const val = 42
arr10, err := ffi.NewArrayType(10, ffi.C_int32)
if err != nil {
t.Errorf(err.Error())
}
slityp, err := ffi.NewSliceType(ffi.C_int32)
if err != nil {
t.Errorf(err.Error())
}
ctyp, err := ffi.NewStructType(
"struct_sswsv",
[]ffi.Field{
{"F1", ffi.C_uint16},
{"F2", arr10},
{"F3", ffi.C_int32},
{"F4", ffi.C_uint16},
{"F5", slityp},
})
eq(t, "struct_sswsv", ctyp.Name())
eq(t, ffi.Struct, ctyp.Kind())
eq(t, 5, ctyp.NumField())
cval := ffi.New(ctyp)
eq(t, ctyp.Kind(), cval.Kind())
eq(t, ctyp.NumField(), cval.NumField())
eq(t, uint64(0), cval.Field(0).Uint())
for i := 0; i < arr10.Len(); i++ {
eq(t, int64(0), cval.Field(1).Index(i).Int())
}
eq(t, int64(0), cval.Field(2).Int())
eq(t, uint64(0), cval.Field(3).Uint())
eq(t, int(0), cval.Field(4).Len())
eq(t, int(0), cval.Field(4).Len())
goval := struct {
F1 uint16
F2 [10]int32
F3 int32
F4 uint16
F5 []int32
}{
F1: val,
F2: [10]int32{val, val, val, val, val,
val, val, val, val, val},
F3: val,
F4: val,
F5: make([]int32, 2, 3),
}
goval.F5[0] = val
goval.F5[1] = val
cval.SetValue(reflect.ValueOf(goval))
eq(t, uint64(val), cval.Field(0).Uint())
for i := 0; i < arr10.Len(); i++ {
eq(t, int64(val), cval.Field(1).Index(i).Int())
}
eq(t, int64(val), cval.Field(2).Int())
eq(t, uint64(val), cval.Field(3).Uint())
eq(t, int(2), cval.Field(4).Len())
// FIXME: should we get the 'cap' from go ?
eq(t, int( /*3*/ 2), cval.Field(4).Cap())
eq(t, int64(val), cval.Field(4).Index(0).Int())
eq(t, int64(val), cval.Field(4).Index(1).Int())
}