forked from TrueCloudLab/frostfs-api-go
[#355] util/proto: Support fixed32 fields
Implement `Fixed32Marshal` / `Fixed32Size` functions which allow to work with protobuf fixed32 fields. Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
This commit is contained in:
Leonard Lyubich
LeL
parent
d015b1d679
commit
b0a2b73650
3 changed files with 99 additions and 21 deletions
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@ -384,3 +384,34 @@ func Float64Size(fNum int, v float64) int {
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return VarUIntSize(uint64(prefix)) + 8
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}
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// Fixed32Marshal encodes uint32 value to Protocol Buffers fixed32 field with specified number,
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// and writes it to specified buffer. Returns number of bytes written.
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//
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// Panics if the buffer is undersized.
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func Fixed32Marshal(field int, buf []byte, v uint32) int {
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if v == 0 {
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return 0
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}
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prefix := field<<3 | 5
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// buf length check can prevent panic at PutUvarint, but it will make
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// marshaller a bit slower.
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i := binary.PutUvarint(buf, uint64(prefix))
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binary.LittleEndian.PutUint32(buf[i:], v)
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return i + 4
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}
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// Fixed32Size returns number of bytes required to encode uint32 value to Protocol Buffers fixed32 field
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// with specified number.
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func Fixed32Size(fNum int, v uint32) int {
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if v == 0 {
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return 0
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}
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prefix := fNum<<3 | 5
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return VarUIntSize(uint64(prefix)) + 4
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}
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@ -24,6 +24,7 @@ type stablePrimitives struct {
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FieldH SomeEnum
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FieldI uint64 // fixed64
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FieldJ float64
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FieldK uint32 // fixed32
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}
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type stableRepPrimitives struct {
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@ -144,6 +145,15 @@ func (s *stablePrimitives) stableMarshal(buf []byte, wrongField bool) ([]byte, e
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}
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i += offset
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fieldNum = 207
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if wrongField {
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fieldNum++
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}
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offset = proto.Fixed32Marshal(fieldNum, buf, s.FieldK)
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i += offset
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fieldNum = 300
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if wrongField {
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fieldNum++
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@ -167,6 +177,7 @@ func (s *stablePrimitives) stableSize() int {
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proto.UInt64Size(204, s.FieldG) +
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proto.Fixed64Size(205, s.FieldI) +
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proto.Float64Size(206, s.FieldJ) +
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proto.Fixed32Size(207, s.FieldK) +
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proto.EnumSize(300, int32(s.FieldH))
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}
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@ -478,6 +489,17 @@ func TestFloat64Marshal(t *testing.T) {
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})
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}
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func TestFixed32Marshal(t *testing.T) {
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t.Run("zero", func(t *testing.T) {
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testFixed32Marshal(t, 0, false)
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})
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t.Run("non zero", func(t *testing.T) {
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testFixed32Marshal(t, math.MaxUint32, false)
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testFixed32Marshal(t, math.MaxUint32, true)
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})
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}
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func testMarshal(t *testing.T, c stablePrimitives, tr test.Primitives, wrongField bool) *test.Primitives {
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var (
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wire []byte
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@ -791,3 +813,18 @@ func testFixed64Marshal(t *testing.T, n uint64, wrongField bool) {
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require.EqualValues(t, 0, result.FieldI)
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}
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}
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func testFixed32Marshal(t *testing.T, n uint32, wrongField bool) {
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var (
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custom = stablePrimitives{FieldK: n}
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transport = test.Primitives{FieldK: n}
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)
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result := testMarshal(t, custom, transport, wrongField)
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if !wrongField {
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require.Equal(t, n, result.FieldK)
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} else {
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require.EqualValues(t, 0, result.FieldK)
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}
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}
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52
util/proto/test/test.pb.go
generated
52
util/proto/test/test.pb.go
generated
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@ -83,6 +83,7 @@ type Primitives struct {
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FieldG uint64 `protobuf:"varint,204,opt,name=field_g,json=fieldG,proto3" json:"field_g,omitempty"`
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FieldI uint64 `protobuf:"fixed64,205,opt,name=field_i,json=fieldI,proto3" json:"field_i,omitempty"`
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FieldJ float64 `protobuf:"fixed64,206,opt,name=field_j,json=fieldJ,proto3" json:"field_j,omitempty"`
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FieldK uint32 `protobuf:"fixed32,207,opt,name=field_k,json=fieldK,proto3" json:"field_k,omitempty"`
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FieldH Primitives_SomeEnum `protobuf:"varint,300,opt,name=field_h,json=fieldH,proto3,enum=test.Primitives_SomeEnum" json:"field_h,omitempty"`
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}
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@ -181,6 +182,13 @@ func (x *Primitives) GetFieldJ() float64 {
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return 0
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}
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func (x *Primitives) GetFieldK() uint32 {
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if x != nil {
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return x.FieldK
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}
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return 0
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}
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func (x *Primitives) GetFieldH() Primitives_SomeEnum {
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if x != nil {
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return x.FieldH
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@ -280,7 +288,7 @@ var File_util_proto_test_test_proto protoreflect.FileDescriptor
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var file_util_proto_test_test_proto_rawDesc = []byte{
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@ -295,26 +303,28 @@ var file_util_proto_test_test_proto_rawDesc = []byte{
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}
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var (
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