// Given a mojom Type and the descriptor mapping, produce the corresponding vdltype.
func mojomToVDLType(mojomtype mojom_types.Type, mp map[string]mojom_types.UserDefinedType, builder *vdl.TypeBuilder, pendingUdts map[string]vdl.TypeOrPending) (vt vdl.TypeOrPending) {
mt := interface{}(mojomtype)
switch mt := interface{}(mt).(type) { // To do the type switch, mt has to be converted to interface{}.
case *mojom_types.TypeSimpleType: // TypeSimpleType
switch mt.Value {
case mojom_types.SimpleType_Bool:
vt = vdl.BoolType
case mojom_types.SimpleType_Double:
vt = vdl.Float64Type
case mojom_types.SimpleType_Float:
vt = vdl.Float32Type
case mojom_types.SimpleType_Int8:
vt = vdl.Int8Type
case mojom_types.SimpleType_Int16:
vt = vdl.Int16Type
case mojom_types.SimpleType_Int32:
vt = vdl.Int32Type
case mojom_types.SimpleType_Int64:
vt = vdl.Int64Type
case mojom_types.SimpleType_Uint8:
vt = vdl.ByteType
case mojom_types.SimpleType_Uint16:
vt = vdl.Uint16Type
case mojom_types.SimpleType_Uint32:
vt = vdl.Uint32Type
case mojom_types.SimpleType_Uint64:
vt = vdl.Uint64Type
}
case *mojom_types.TypeStringType: // TypeStringType
st := mt.Value
if st.Nullable {
panic("nullable strings don't exist in vdl")
}
vt = vdl.StringType
case *mojom_types.TypeArrayType: // TypeArrayType
at := mt.Value
if at.Nullable {
panic("nullable arrays don't exist in vdl")
}
if at.FixedLength > 0 {
vt = builder.Array().
AssignLen(int(at.FixedLength)).
AssignElem(mojomToVDLType(at.ElementType, mp, builder, pendingUdts))
} else {
vt = builder.List().
AssignElem(mojomToVDLType(at.ElementType, mp, builder, pendingUdts))
}
case *mojom_types.TypeMapType: // TypeMapType
// Note that mojom doesn't have sets.
m := mt.Value
if m.Nullable {
panic("nullable maps don't exist in vdl")
}
vt = builder.Map().
AssignKey(mojomToVDLType(m.KeyType, mp, builder, pendingUdts)).
AssignElem(mojomToVDLType(m.ValueType, mp, builder, pendingUdts))
case *mojom_types.TypeHandleType: // TypeHandleType
panic("handles don't exist in vdl")
case *mojom_types.TypeTypeReference: // TypeTypeReference
tr := mt.Value
if tr.IsInterfaceRequest {
panic("interface requests don't exist in vdl")
}
udt := mp[*tr.TypeKey]
var ok bool
vt, ok = pendingUdts[*tr.TypeKey]
if !ok {
vt = mojomToVDLTypeUDT(*tr.TypeKey, udt, mp, builder, pendingUdts)
}
if tr.Nullable {
if udt.Tag() != 1 {
panic("nullable non-struct type reference cannot be represented in vdl")
}
vt = builder.Optional().AssignElem(vt)
}
default:
panic(fmt.Errorf("%#v has unknown tag %d", mojomtype, mojomtype.Tag()))
}
return 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)
}
}
}