func (t target) FinishMap(x vdl.MapTarget) error {
mt := x.(*mapTarget)
listTarget, err := mt.valuePlaceholder.StartList(vdl.ListType(mt.valueType), len(mt.cachedValues))
if err != nil {
return err
}
for i, val := range mt.cachedValues {
te, err := listTarget.StartElem(i)
if err != nil {
return err
}
if err := vdl.FromValue(te, val); err != nil {
return err
}
if err := listTarget.FinishElem(te); err != nil {
return err
}
}
return nil
}
func (mtv *mojomToTargetTranscoder) transcodeValue(vt *vdl.Type, target vdl.Target, isTopType, isNullable bool) error {
switch vt.Kind() {
case vdl.Bool:
value, err := mtv.modec.ReadBool()
if err != nil {
return err
}
return target.FromBool(value, vt)
case vdl.Int8:
value, err := mtv.modec.ReadInt8()
if err != nil {
return err
}
return target.FromInt(int64(value), vt)
case vdl.Int16:
value, err := mtv.modec.ReadInt16()
if err != nil {
return err
}
return target.FromInt(int64(value), vt)
case vdl.Int32:
value, err := mtv.modec.ReadInt32()
if err != nil {
return err
}
return target.FromInt(int64(value), vt)
case vdl.Int64:
value, err := mtv.modec.ReadInt64()
if err != nil {
return err
}
return target.FromInt(value, vt)
case vdl.Byte:
value, err := mtv.modec.ReadUint8()
if err != nil {
return err
}
return target.FromUint(uint64(value), vt)
case vdl.Uint16:
value, err := mtv.modec.ReadUint16()
if err != nil {
return err
}
return target.FromUint(uint64(value), vt)
case vdl.Uint32:
value, err := mtv.modec.ReadUint32()
if err != nil {
return err
}
return target.FromUint(uint64(value), vt)
case vdl.Uint64:
value, err := mtv.modec.ReadUint64()
if err != nil {
return err
}
return target.FromUint(value, vt)
case vdl.Float32:
value, err := mtv.modec.ReadFloat32()
if err != nil {
return err
}
return target.FromFloat(float64(value), vt)
case vdl.Float64:
value, err := mtv.modec.ReadFloat64()
if err != nil {
return err
}
return target.FromFloat(value, vt)
case vdl.String:
switch ptr, err := mtv.modec.ReadPointer(); {
case err != nil:
return err
case ptr == 0:
return fmt.Errorf("invalid null string pointer")
default:
value, err := mtv.modec.ReadString()
if err != nil {
return err
}
return target.FromString(value, vt)
}
return nil
case vdl.Enum:
index, err := mtv.modec.ReadInt32()
if err != nil {
return err
}
if int(index) >= vt.NumEnumLabel() || index < 0 {
return fmt.Errorf("enum label out of range")
}
target.FromEnumLabel(vt.EnumLabel(int(index)), vt)
return nil
case vdl.Array, vdl.List:
switch ptr, err := mtv.modec.ReadPointer(); {
case err != nil:
return err
case ptr == 0 && isNullable:
return target.FromNil(vdl.OptionalType(vt))
case ptr == 0 && !isNullable:
return fmt.Errorf("invalid null struct pointer")
}
if vt.IsBytes() {
str, err := mtv.modec.ReadString()
if err != nil {
return err
}
return target.FromBytes([]byte(str), vt)
} else {
elemBitSize := baseTypeSizeBits(vt.Elem())
numElems, err := mtv.modec.StartArray(elemBitSize)
if err != nil {
return err
}
listTarget, err := target.StartList(vt, int(numElems))
if err != nil {
return err
}
for i := 0; i < int(numElems); i++ {
elemTarget, err := listTarget.StartElem(i)
if err != nil {
return err
}
if err := mtv.transcodeValue(vt.Elem(), elemTarget, false, false); err != nil {
return err
}
if err := listTarget.FinishElem(elemTarget); err != nil {
return err
}
}
if err := target.FinishList(listTarget); err != nil {
return err
}
}
return mtv.modec.Finish()
case vdl.Set:
panic("unimplemented")
/*switch ptr, err := d.dec.ReadPointer(); {
case err != nil:
return err
case ptr == 0 && isNullable:
return target.FromNil(vdl.OptionalType(vt))
case ptr == 0 && !isNullable:
return fmt.Errorf("invalid null struct pointer")
}
keyBitSize := baseTypeSizeBits(vt.Key())
numKeys, err := d.dec.StartArray(keyBitSize)
if err != nil {
return err
}
setTarget, err := target.StartSet(vt, int(numKeys))
if err != nil {
return err
}
for i := 0; i < int(numKeys); i++ {
keyTarget, err := setTarget.StartKey()
if err != nil {
return err
}
if err := d.decodeValue(mt.Key, keyTarget, false, false); err != nil {
return err
}
if err := setTarget.FinishKey(keyTarget); err != nil {
return err
}
}
if err := target.FinishSet(setTarget); err != nil {
return err
}
return d.dec.Finish()*/
case vdl.Map:
switch ptr, err := mtv.modec.ReadPointer(); {
case err != nil:
return err
case ptr == 0 && isNullable:
return target.FromNil(vdl.OptionalType(vt))
case ptr == 0 && !isNullable:
return fmt.Errorf("invalid null struct pointer")
}
if err := mtv.modec.StartMap(); err != nil {
return err
}
var keys, values []*vdl.Value
keysTarget, err := vdl.ReflectTarget(reflect.ValueOf(&keys))
if err != nil {
return err
}
keysListType := vdl.ListType(vt.Key())
if err := mtv.transcodeValue(keysListType, keysTarget, false, false); err != nil {
return err
}
valuesTarget, err := vdl.ReflectTarget(reflect.ValueOf(&values))
if err != nil {
return err
}
valuesListType := vdl.ListType(vt.Elem())
if err := mtv.transcodeValue(valuesListType, valuesTarget, false, false); err != nil {
return err
}
if len(keys) != len(values) {
return fmt.Errorf("values don't match keys")
}
mapTarget, err := target.StartMap(vt, len(keys))
if err != nil {
return err
}
for i, key := range keys {
value := values[i]
keyTarget, err := mapTarget.StartKey()
if err != nil {
return err
}
if err := vdl.FromValue(keyTarget, key); err != nil {
return err
}
fieldTarget, err := mapTarget.FinishKeyStartField(keyTarget)
if err != nil {
return err
}
if err := vdl.FromValue(fieldTarget, value); err != nil {
return err
}
if err := mapTarget.FinishField(keyTarget, fieldTarget); err != nil {
return err
}
}
if err := target.FinishMap(mapTarget); err != nil {
return err
}
return mtv.modec.Finish()
case vdl.Struct:
// TODO(toddw): See the comment in encoder.mojomStructSize; we rely on the
// fields to be presented in the canonical mojom field ordering.
if !isTopType {
switch ptr, err := mtv.modec.ReadPointer(); {
case err != nil:
return err
case ptr == 0 && isNullable:
return target.FromNil(vdl.OptionalType(vt))
case ptr == 0 && !isNullable:
return fmt.Errorf("invalid null struct pointer")
}
}
_, err := mtv.modec.StartStruct()
if err != nil {
return err
}
targetFields, err := target.StartFields(vt)
if err != nil {
return err
}
for _, alloc := range computeStructLayout(vt) {
mfield := vt.Field(alloc.vdlStructIndex)
switch vkey, vfield, err := targetFields.StartField(mfield.Name); {
// TODO(toddw): Handle err == vdl.ErrFieldNoExist case?
case err != nil:
return err
default:
if err := mtv.transcodeValue(mfield.Type, vfield, false, false); err != nil {
return err
}
if err := targetFields.FinishField(vkey, vfield); err != nil {
return err
}
}
}
// TODO(toddw): Fill in fields that weren't decoded with their zero value.
if err := target.FinishFields(targetFields); err != nil {
return err
}
return mtv.modec.Finish()
case vdl.Union:
size, tag, err := mtv.modec.ReadUnionHeader()
if err != nil {
return err
}
if size == 0 {
mtv.modec.SkipUnionValue()
return target.FromNil(vdl.OptionalType(vt))
}
if int(tag) >= vt.NumField() {
return fmt.Errorf("union tag out of bounds")
}
fld := vt.Field(int(tag))
targetFields, err := target.StartFields(vt)
if err != nil {
return err
}
vKey, vField, err := targetFields.StartField(fld.Name)
if err != nil {
return err
}
if fld.Type.Kind() == vdl.Union {
switch ptr, err := mtv.modec.ReadPointer(); {
case err != nil:
return err
case ptr == 0 && isNullable:
return target.FromNil(vdl.OptionalType(fld.Type))
case ptr == 0 && !isNullable:
return fmt.Errorf("invalid null union pointer")
}
if err := mtv.modec.StartNestedUnion(); err != nil {
return err
}
}
if err := mtv.transcodeValue(fld.Type, vField, false, false); err != nil {
return err
}
if fld.Type.Kind() == vdl.Union {
if err := mtv.modec.Finish(); err != nil {
return err
}
}
if err := targetFields.FinishField(vKey, vField); err != nil {
return err
}
if err := target.FinishFields(targetFields); err != nil {
return err
}
mtv.modec.FinishReadingUnionValue()
return nil
case vdl.Optional:
return mtv.transcodeValue(vt.Elem(), target, false, true)
case vdl.Any:
panic("unimplemented")
//case vdl.TypeObject:
// panic("unimplemented")
default:
panic(fmt.Errorf("decodeValue unhandled vdl type: %v", vt))
}
}
func TestVdlAndMojoTypeConversion(t *testing.T) {
// Create types.
enumType := vdl.NamedType("v23proxy/tests/transcoder_testcases.TestEnum", vdl.EnumType("A", "B", "C"))
basicStructType := vdl.NamedType("v23proxy/tests/transcoder_testcases.TestBasicStruct", vdl.StructType(vdl.Field{"Enum", enumType}, vdl.Field{"A", vdl.Int32Type}))
builder := vdl.TypeBuilder{}
strct := builder.Struct()
strct.AppendField("Enum", enumType)
namedStruct := builder.Named("v23proxy/tests/transcoder_testcases.TestCyclicStruct").AssignBase(strct)
strct.AppendField("CyclicStruct", builder.Optional().AssignElem(namedStruct))
strct.AppendField("A", vdl.Int32Type)
builder.Build()
cyclicStructType, err := namedStruct.Built()
if err != nil {
t.Fatalf("error building struct: %v", err)
}
tests := []struct {
vdl *vdl.Type
mojom mojom_types.Type
mp map[string]mojom_types.UserDefinedType
}{
{
vdl.BoolType,
&mojom_types.TypeSimpleType{mojom_types.SimpleType_Bool},
map[string]mojom_types.UserDefinedType{},
},
{
vdl.ByteType,
&mojom_types.TypeSimpleType{mojom_types.SimpleType_Uint8},
map[string]mojom_types.UserDefinedType{},
},
{
vdl.Uint16Type,
&mojom_types.TypeSimpleType{mojom_types.SimpleType_Uint16},
map[string]mojom_types.UserDefinedType{},
},
{
vdl.Uint32Type,
&mojom_types.TypeSimpleType{mojom_types.SimpleType_Uint32},
map[string]mojom_types.UserDefinedType{},
},
{
vdl.Uint64Type,
&mojom_types.TypeSimpleType{mojom_types.SimpleType_Uint64},
map[string]mojom_types.UserDefinedType{},
},
{
vdl.Int8Type,
&mojom_types.TypeSimpleType{mojom_types.SimpleType_Int8},
map[string]mojom_types.UserDefinedType{},
},
{
vdl.Int16Type,
&mojom_types.TypeSimpleType{mojom_types.SimpleType_Int16},
map[string]mojom_types.UserDefinedType{},
},
{
vdl.Int32Type,
&mojom_types.TypeSimpleType{mojom_types.SimpleType_Int32},
map[string]mojom_types.UserDefinedType{},
},
{
vdl.Int64Type,
&mojom_types.TypeSimpleType{mojom_types.SimpleType_Int64},
map[string]mojom_types.UserDefinedType{},
},
{
vdl.Float32Type,
&mojom_types.TypeSimpleType{mojom_types.SimpleType_Float},
map[string]mojom_types.UserDefinedType{},
},
{
vdl.Float64Type,
&mojom_types.TypeSimpleType{mojom_types.SimpleType_Double},
map[string]mojom_types.UserDefinedType{},
},
{
vdl.StringType,
&mojom_types.TypeStringType{mojom_types.StringType{false}},
map[string]mojom_types.UserDefinedType{},
},
// ?string is currently disallowed in vdl, so skipping
{
vdl.ArrayType(3, vdl.Int64Type),
&mojom_types.TypeArrayType{mojom_types.ArrayType{false, 3, &mojom_types.TypeSimpleType{mojom_types.SimpleType_Int64}}},
map[string]mojom_types.UserDefinedType{},
},
// ?[3]int64 is currently disallowed in vdl, so skipping
{
vdl.ListType(vdl.Int64Type),
&mojom_types.TypeArrayType{mojom_types.ArrayType{false, -1, &mojom_types.TypeSimpleType{mojom_types.SimpleType_Int64}}},
map[string]mojom_types.UserDefinedType{},
},
// ?[]int64 is currently disallowed in vdl, so skipping
{
vdl.MapType(vdl.Int64Type, vdl.BoolType),
&mojom_types.TypeMapType{mojom_types.MapType{false, &mojom_types.TypeSimpleType{mojom_types.SimpleType_Int64}, &mojom_types.TypeSimpleType{mojom_types.SimpleType_Bool}}},
map[string]mojom_types.UserDefinedType{},
},
// ?map[int64]bool is currently disallowed in vdl, so skipping
{
enumType,
&mojom_types.TypeTypeReference{mojom_types.TypeReference{Nullable: false, TypeKey: stringPtr("TYPE_KEY:v23proxy.tests.transcoder_testcases.TestEnum")}},
map[string]mojom_types.UserDefinedType{
"TYPE_KEY:v23proxy.tests.transcoder_testcases.TestEnum": transcoder_testcases.GetAllMojomTypeDefinitions()["TYPE_KEY:v23proxy.tests.transcoder_testcases.TestEnum"],
},
},
{
basicStructType,
&mojom_types.TypeTypeReference{mojom_types.TypeReference{Nullable: false, TypeKey: stringPtr("TYPE_KEY:v23proxy.tests.transcoder_testcases.TestBasicStruct")}},
map[string]mojom_types.UserDefinedType{
"TYPE_KEY:v23proxy.tests.transcoder_testcases.TestBasicStruct": transcoder_testcases.GetAllMojomTypeDefinitions()["TYPE_KEY:v23proxy.tests.transcoder_testcases.TestBasicStruct"],
"TYPE_KEY:v23proxy.tests.transcoder_testcases.TestEnum": transcoder_testcases.GetAllMojomTypeDefinitions()["TYPE_KEY:v23proxy.tests.transcoder_testcases.TestEnum"],
},
},
{
cyclicStructType,
&mojom_types.TypeTypeReference{mojom_types.TypeReference{Nullable: false, TypeKey: stringPtr("TYPE_KEY:v23proxy.tests.transcoder_testcases.TestCyclicStruct")}},
map[string]mojom_types.UserDefinedType{
"TYPE_KEY:v23proxy.tests.transcoder_testcases.TestCyclicStruct": transcoder_testcases.GetAllMojomTypeDefinitions()["TYPE_KEY:v23proxy.tests.transcoder_testcases.TestCyclicStruct"],
"TYPE_KEY:v23proxy.tests.transcoder_testcases.TestEnum": transcoder_testcases.GetAllMojomTypeDefinitions()["TYPE_KEY:v23proxy.tests.transcoder_testcases.TestEnum"],
},
},
}
for _, test := range tests {
mojomtype, mp := transcoder.VDLToMojomType(test.vdl)
// Note: Equality is only guaranteed if the casing matches up. Mojom no longer sends out UpperCamelCase values.
if !reflect.DeepEqual(mojomtype, test.mojom) {
t.Errorf("vdl type %v, when converted to mojo type was %#v. expected %#v", test.vdl, mojomtype, test.mojom)
}
// Note: Equality of structs is virtually impossible. The DeclarationData of the values in the map contains lots of information we cannot recover from vdl.
//if !reflect.DeepEqual(mp, test.mp) {
// t.Errorf("vdl type %v, when converted to mojo type did not match expected user defined types. got %#v, expected %#v", test.vdl, mp, test.mp)
//}
for k, _ := range test.mp {
if _, ok := mp[k]; !ok {
t.Errorf("vdl type %v, when converted to mojo type did not create an entry for %s", test.vdl, k)
}
}
if len(mp) != len(test.mp) {
t.Errorf("vdl type %v, when converted to mojo type created %d map entries, expected %d", test.vdl, len(mp), len(test.mp))
}
vt, err := transcoder.MojomToVDLType(test.mojom, test.mp)
if err != nil {
t.Errorf("error converting mojo type %#v (with user defined types %v): %v", test.mojom, test.mp, err)
}
if !reflect.DeepEqual(vt, test.vdl) {
t.Errorf("mojom type %#v (with user defined types %v), when converted to vdl type was %v. expected %v", test.mojom, test.mp, vt, test.vdl)
}
}
}