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path: root/vendor/github.com/golang/protobuf/proto/encode.go
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Diffstat (limited to 'vendor/github.com/golang/protobuf/proto/encode.go')
-rw-r--r--vendor/github.com/golang/protobuf/proto/encode.go1200
1 files changed, 24 insertions, 1176 deletions
diff --git a/vendor/github.com/golang/protobuf/proto/encode.go b/vendor/github.com/golang/protobuf/proto/encode.go
index 68b9b30cf..3abfed2cf 100644
--- a/vendor/github.com/golang/protobuf/proto/encode.go
+++ b/vendor/github.com/golang/protobuf/proto/encode.go
@@ -37,28 +37,9 @@ package proto
import (
"errors"
- "fmt"
"reflect"
- "sort"
)
-// RequiredNotSetError is the error returned if Marshal is called with
-// a protocol buffer struct whose required fields have not
-// all been initialized. It is also the error returned if Unmarshal is
-// called with an encoded protocol buffer that does not include all the
-// required fields.
-//
-// When printed, RequiredNotSetError reports the first unset required field in a
-// message. If the field cannot be precisely determined, it is reported as
-// "{Unknown}".
-type RequiredNotSetError struct {
- field string
-}
-
-func (e *RequiredNotSetError) Error() string {
- return fmt.Sprintf("proto: required field %q not set", e.field)
-}
-
var (
// errRepeatedHasNil is the error returned if Marshal is called with
// a struct with a repeated field containing a nil element.
@@ -82,10 +63,6 @@ var (
const maxVarintBytes = 10 // maximum length of a varint
-// maxMarshalSize is the largest allowed size of an encoded protobuf,
-// since C++ and Java use signed int32s for the size.
-const maxMarshalSize = 1<<31 - 1
-
// EncodeVarint returns the varint encoding of x.
// This is the format for the
// int32, int64, uint32, uint64, bool, and enum
@@ -119,18 +96,27 @@ func (p *Buffer) EncodeVarint(x uint64) error {
// SizeVarint returns the varint encoding size of an integer.
func SizeVarint(x uint64) int {
- return sizeVarint(x)
-}
-
-func sizeVarint(x uint64) (n int) {
- for {
- n++
- x >>= 7
- if x == 0 {
- break
- }
- }
- return n
+ switch {
+ case x < 1<<7:
+ return 1
+ case x < 1<<14:
+ return 2
+ case x < 1<<21:
+ return 3
+ case x < 1<<28:
+ return 4
+ case x < 1<<35:
+ return 5
+ case x < 1<<42:
+ return 6
+ case x < 1<<49:
+ return 7
+ case x < 1<<56:
+ return 8
+ case x < 1<<63:
+ return 9
+ }
+ return 10
}
// EncodeFixed64 writes a 64-bit integer to the Buffer.
@@ -149,10 +135,6 @@ func (p *Buffer) EncodeFixed64(x uint64) error {
return nil
}
-func sizeFixed64(x uint64) int {
- return 8
-}
-
// EncodeFixed32 writes a 32-bit integer to the Buffer.
// This is the format for the
// fixed32, sfixed32, and float protocol buffer types.
@@ -165,10 +147,6 @@ func (p *Buffer) EncodeFixed32(x uint64) error {
return nil
}
-func sizeFixed32(x uint64) int {
- return 4
-}
-
// EncodeZigzag64 writes a zigzag-encoded 64-bit integer
// to the Buffer.
// This is the format used for the sint64 protocol buffer type.
@@ -177,10 +155,6 @@ func (p *Buffer) EncodeZigzag64(x uint64) error {
return p.EncodeVarint(uint64((x << 1) ^ uint64((int64(x) >> 63))))
}
-func sizeZigzag64(x uint64) int {
- return sizeVarint(uint64((x << 1) ^ uint64((int64(x) >> 63))))
-}
-
// EncodeZigzag32 writes a zigzag-encoded 32-bit integer
// to the Buffer.
// This is the format used for the sint32 protocol buffer type.
@@ -189,10 +163,6 @@ func (p *Buffer) EncodeZigzag32(x uint64) error {
return p.EncodeVarint(uint64((uint32(x) << 1) ^ uint32((int32(x) >> 31))))
}
-func sizeZigzag32(x uint64) int {
- return sizeVarint(uint64((uint32(x) << 1) ^ uint32((int32(x) >> 31))))
-}
-
// EncodeRawBytes writes a count-delimited byte buffer to the Buffer.
// This is the format used for the bytes protocol buffer
// type and for embedded messages.
@@ -202,11 +172,6 @@ func (p *Buffer) EncodeRawBytes(b []byte) error {
return nil
}
-func sizeRawBytes(b []byte) int {
- return sizeVarint(uint64(len(b))) +
- len(b)
-}
-
// EncodeStringBytes writes an encoded string to the Buffer.
// This is the format used for the proto2 string type.
func (p *Buffer) EncodeStringBytes(s string) error {
@@ -215,319 +180,17 @@ func (p *Buffer) EncodeStringBytes(s string) error {
return nil
}
-func sizeStringBytes(s string) int {
- return sizeVarint(uint64(len(s))) +
- len(s)
-}
-
// Marshaler is the interface representing objects that can marshal themselves.
type Marshaler interface {
Marshal() ([]byte, error)
}
-// Marshal takes the protocol buffer
-// and encodes it into the wire format, returning the data.
-func Marshal(pb Message) ([]byte, error) {
- // Can the object marshal itself?
- if m, ok := pb.(Marshaler); ok {
- return m.Marshal()
- }
- p := NewBuffer(nil)
- err := p.Marshal(pb)
- if p.buf == nil && err == nil {
- // Return a non-nil slice on success.
- return []byte{}, nil
- }
- return p.buf, err
-}
-
// EncodeMessage writes the protocol buffer to the Buffer,
// prefixed by a varint-encoded length.
func (p *Buffer) EncodeMessage(pb Message) error {
- t, base, err := getbase(pb)
- if structPointer_IsNil(base) {
- return ErrNil
- }
- if err == nil {
- var state errorState
- err = p.enc_len_struct(GetProperties(t.Elem()), base, &state)
- }
- return err
-}
-
-// Marshal takes the protocol buffer
-// and encodes it into the wire format, writing the result to the
-// Buffer.
-func (p *Buffer) Marshal(pb Message) error {
- // Can the object marshal itself?
- if m, ok := pb.(Marshaler); ok {
- data, err := m.Marshal()
- p.buf = append(p.buf, data...)
- return err
- }
-
- t, base, err := getbase(pb)
- if structPointer_IsNil(base) {
- return ErrNil
- }
- if err == nil {
- err = p.enc_struct(GetProperties(t.Elem()), base)
- }
-
- if collectStats {
- (stats).Encode++ // Parens are to work around a goimports bug.
- }
-
- if len(p.buf) > maxMarshalSize {
- return ErrTooLarge
- }
- return err
-}
-
-// Size returns the encoded size of a protocol buffer.
-func Size(pb Message) (n int) {
- // Can the object marshal itself? If so, Size is slow.
- // TODO: add Size to Marshaler, or add a Sizer interface.
- if m, ok := pb.(Marshaler); ok {
- b, _ := m.Marshal()
- return len(b)
- }
-
- t, base, err := getbase(pb)
- if structPointer_IsNil(base) {
- return 0
- }
- if err == nil {
- n = size_struct(GetProperties(t.Elem()), base)
- }
-
- if collectStats {
- (stats).Size++ // Parens are to work around a goimports bug.
- }
-
- return
-}
-
-// Individual type encoders.
-
-// Encode a bool.
-func (o *Buffer) enc_bool(p *Properties, base structPointer) error {
- v := *structPointer_Bool(base, p.field)
- if v == nil {
- return ErrNil
- }
- x := 0
- if *v {
- x = 1
- }
- o.buf = append(o.buf, p.tagcode...)
- p.valEnc(o, uint64(x))
- return nil
-}
-
-func (o *Buffer) enc_proto3_bool(p *Properties, base structPointer) error {
- v := *structPointer_BoolVal(base, p.field)
- if !v {
- return ErrNil
- }
- o.buf = append(o.buf, p.tagcode...)
- p.valEnc(o, 1)
- return nil
-}
-
-func size_bool(p *Properties, base structPointer) int {
- v := *structPointer_Bool(base, p.field)
- if v == nil {
- return 0
- }
- return len(p.tagcode) + 1 // each bool takes exactly one byte
-}
-
-func size_proto3_bool(p *Properties, base structPointer) int {
- v := *structPointer_BoolVal(base, p.field)
- if !v && !p.oneof {
- return 0
- }
- return len(p.tagcode) + 1 // each bool takes exactly one byte
-}
-
-// Encode an int32.
-func (o *Buffer) enc_int32(p *Properties, base structPointer) error {
- v := structPointer_Word32(base, p.field)
- if word32_IsNil(v) {
- return ErrNil
- }
- x := int32(word32_Get(v)) // permit sign extension to use full 64-bit range
- o.buf = append(o.buf, p.tagcode...)
- p.valEnc(o, uint64(x))
- return nil
-}
-
-func (o *Buffer) enc_proto3_int32(p *Properties, base structPointer) error {
- v := structPointer_Word32Val(base, p.field)
- x := int32(word32Val_Get(v)) // permit sign extension to use full 64-bit range
- if x == 0 {
- return ErrNil
- }
- o.buf = append(o.buf, p.tagcode...)
- p.valEnc(o, uint64(x))
- return nil
-}
-
-func size_int32(p *Properties, base structPointer) (n int) {
- v := structPointer_Word32(base, p.field)
- if word32_IsNil(v) {
- return 0
- }
- x := int32(word32_Get(v)) // permit sign extension to use full 64-bit range
- n += len(p.tagcode)
- n += p.valSize(uint64(x))
- return
-}
-
-func size_proto3_int32(p *Properties, base structPointer) (n int) {
- v := structPointer_Word32Val(base, p.field)
- x := int32(word32Val_Get(v)) // permit sign extension to use full 64-bit range
- if x == 0 && !p.oneof {
- return 0
- }
- n += len(p.tagcode)
- n += p.valSize(uint64(x))
- return
-}
-
-// Encode a uint32.
-// Exactly the same as int32, except for no sign extension.
-func (o *Buffer) enc_uint32(p *Properties, base structPointer) error {
- v := structPointer_Word32(base, p.field)
- if word32_IsNil(v) {
- return ErrNil
- }
- x := word32_Get(v)
- o.buf = append(o.buf, p.tagcode...)
- p.valEnc(o, uint64(x))
- return nil
-}
-
-func (o *Buffer) enc_proto3_uint32(p *Properties, base structPointer) error {
- v := structPointer_Word32Val(base, p.field)
- x := word32Val_Get(v)
- if x == 0 {
- return ErrNil
- }
- o.buf = append(o.buf, p.tagcode...)
- p.valEnc(o, uint64(x))
- return nil
-}
-
-func size_uint32(p *Properties, base structPointer) (n int) {
- v := structPointer_Word32(base, p.field)
- if word32_IsNil(v) {
- return 0
- }
- x := word32_Get(v)
- n += len(p.tagcode)
- n += p.valSize(uint64(x))
- return
-}
-
-func size_proto3_uint32(p *Properties, base structPointer) (n int) {
- v := structPointer_Word32Val(base, p.field)
- x := word32Val_Get(v)
- if x == 0 && !p.oneof {
- return 0
- }
- n += len(p.tagcode)
- n += p.valSize(uint64(x))
- return
-}
-
-// Encode an int64.
-func (o *Buffer) enc_int64(p *Properties, base structPointer) error {
- v := structPointer_Word64(base, p.field)
- if word64_IsNil(v) {
- return ErrNil
- }
- x := word64_Get(v)
- o.buf = append(o.buf, p.tagcode...)
- p.valEnc(o, x)
- return nil
-}
-
-func (o *Buffer) enc_proto3_int64(p *Properties, base structPointer) error {
- v := structPointer_Word64Val(base, p.field)
- x := word64Val_Get(v)
- if x == 0 {
- return ErrNil
- }
- o.buf = append(o.buf, p.tagcode...)
- p.valEnc(o, x)
- return nil
-}
-
-func size_int64(p *Properties, base structPointer) (n int) {
- v := structPointer_Word64(base, p.field)
- if word64_IsNil(v) {
- return 0
- }
- x := word64_Get(v)
- n += len(p.tagcode)
- n += p.valSize(x)
- return
-}
-
-func size_proto3_int64(p *Properties, base structPointer) (n int) {
- v := structPointer_Word64Val(base, p.field)
- x := word64Val_Get(v)
- if x == 0 && !p.oneof {
- return 0
- }
- n += len(p.tagcode)
- n += p.valSize(x)
- return
-}
-
-// Encode a string.
-func (o *Buffer) enc_string(p *Properties, base structPointer) error {
- v := *structPointer_String(base, p.field)
- if v == nil {
- return ErrNil
- }
- x := *v
- o.buf = append(o.buf, p.tagcode...)
- o.EncodeStringBytes(x)
- return nil
-}
-
-func (o *Buffer) enc_proto3_string(p *Properties, base structPointer) error {
- v := *structPointer_StringVal(base, p.field)
- if v == "" {
- return ErrNil
- }
- o.buf = append(o.buf, p.tagcode...)
- o.EncodeStringBytes(v)
- return nil
-}
-
-func size_string(p *Properties, base structPointer) (n int) {
- v := *structPointer_String(base, p.field)
- if v == nil {
- return 0
- }
- x := *v
- n += len(p.tagcode)
- n += sizeStringBytes(x)
- return
-}
-
-func size_proto3_string(p *Properties, base structPointer) (n int) {
- v := *structPointer_StringVal(base, p.field)
- if v == "" && !p.oneof {
- return 0
- }
- n += len(p.tagcode)
- n += sizeStringBytes(v)
- return
+ siz := Size(pb)
+ p.EncodeVarint(uint64(siz))
+ return p.Marshal(pb)
}
// All protocol buffer fields are nillable, but be careful.
@@ -538,818 +201,3 @@ func isNil(v reflect.Value) bool {
}
return false
}
-
-// Encode a message struct.
-func (o *Buffer) enc_struct_message(p *Properties, base structPointer) error {
- var state errorState
- structp := structPointer_GetStructPointer(base, p.field)
- if structPointer_IsNil(structp) {
- return ErrNil
- }
-
- // Can the object marshal itself?
- if p.isMarshaler {
- m := structPointer_Interface(structp, p.stype).(Marshaler)
- data, err := m.Marshal()
- if err != nil && !state.shouldContinue(err, nil) {
- return err
- }
- o.buf = append(o.buf, p.tagcode...)
- o.EncodeRawBytes(data)
- return state.err
- }
-
- o.buf = append(o.buf, p.tagcode...)
- return o.enc_len_struct(p.sprop, structp, &state)
-}
-
-func size_struct_message(p *Properties, base structPointer) int {
- structp := structPointer_GetStructPointer(base, p.field)
- if structPointer_IsNil(structp) {
- return 0
- }
-
- // Can the object marshal itself?
- if p.isMarshaler {
- m := structPointer_Interface(structp, p.stype).(Marshaler)
- data, _ := m.Marshal()
- n0 := len(p.tagcode)
- n1 := sizeRawBytes(data)
- return n0 + n1
- }
-
- n0 := len(p.tagcode)
- n1 := size_struct(p.sprop, structp)
- n2 := sizeVarint(uint64(n1)) // size of encoded length
- return n0 + n1 + n2
-}
-
-// Encode a group struct.
-func (o *Buffer) enc_struct_group(p *Properties, base structPointer) error {
- var state errorState
- b := structPointer_GetStructPointer(base, p.field)
- if structPointer_IsNil(b) {
- return ErrNil
- }
-
- o.EncodeVarint(uint64((p.Tag << 3) | WireStartGroup))
- err := o.enc_struct(p.sprop, b)
- if err != nil && !state.shouldContinue(err, nil) {
- return err
- }
- o.EncodeVarint(uint64((p.Tag << 3) | WireEndGroup))
- return state.err
-}
-
-func size_struct_group(p *Properties, base structPointer) (n int) {
- b := structPointer_GetStructPointer(base, p.field)
- if structPointer_IsNil(b) {
- return 0
- }
-
- n += sizeVarint(uint64((p.Tag << 3) | WireStartGroup))
- n += size_struct(p.sprop, b)
- n += sizeVarint(uint64((p.Tag << 3) | WireEndGroup))
- return
-}
-
-// Encode a slice of bools ([]bool).
-func (o *Buffer) enc_slice_bool(p *Properties, base structPointer) error {
- s := *structPointer_BoolSlice(base, p.field)
- l := len(s)
- if l == 0 {
- return ErrNil
- }
- for _, x := range s {
- o.buf = append(o.buf, p.tagcode...)
- v := uint64(0)
- if x {
- v = 1
- }
- p.valEnc(o, v)
- }
- return nil
-}
-
-func size_slice_bool(p *Properties, base structPointer) int {
- s := *structPointer_BoolSlice(base, p.field)
- l := len(s)
- if l == 0 {
- return 0
- }
- return l * (len(p.tagcode) + 1) // each bool takes exactly one byte
-}
-
-// Encode a slice of bools ([]bool) in packed format.
-func (o *Buffer) enc_slice_packed_bool(p *Properties, base structPointer) error {
- s := *structPointer_BoolSlice(base, p.field)
- l := len(s)
- if l == 0 {
- return ErrNil
- }
- o.buf = append(o.buf, p.tagcode...)
- o.EncodeVarint(uint64(l)) // each bool takes exactly one byte
- for _, x := range s {
- v := uint64(0)
- if x {
- v = 1
- }
- p.valEnc(o, v)
- }
- return nil
-}
-
-func size_slice_packed_bool(p *Properties, base structPointer) (n int) {
- s := *structPointer_BoolSlice(base, p.field)
- l := len(s)
- if l == 0 {
- return 0
- }
- n += len(p.tagcode)
- n += sizeVarint(uint64(l))
- n += l // each bool takes exactly one byte
- return
-}
-
-// Encode a slice of bytes ([]byte).
-func (o *Buffer) enc_slice_byte(p *Properties, base structPointer) error {
- s := *structPointer_Bytes(base, p.field)
- if s == nil {
- return ErrNil
- }
- o.buf = append(o.buf, p.tagcode...)
- o.EncodeRawBytes(s)
- return nil
-}
-
-func (o *Buffer) enc_proto3_slice_byte(p *Properties, base structPointer) error {
- s := *structPointer_Bytes(base, p.field)
- if len(s) == 0 {
- return ErrNil
- }
- o.buf = append(o.buf, p.tagcode...)
- o.EncodeRawBytes(s)
- return nil
-}
-
-func size_slice_byte(p *Properties, base structPointer) (n int) {
- s := *structPointer_Bytes(base, p.field)
- if s == nil && !p.oneof {
- return 0
- }
- n += len(p.tagcode)
- n += sizeRawBytes(s)
- return
-}
-
-func size_proto3_slice_byte(p *Properties, base structPointer) (n int) {
- s := *structPointer_Bytes(base, p.field)
- if len(s) == 0 && !p.oneof {
- return 0
- }
- n += len(p.tagcode)
- n += sizeRawBytes(s)
- return
-}
-
-// Encode a slice of int32s ([]int32).
-func (o *Buffer) enc_slice_int32(p *Properties, base structPointer) error {
- s := structPointer_Word32Slice(base, p.field)
- l := s.Len()
- if l == 0 {
- return ErrNil
- }
- for i := 0; i < l; i++ {
- o.buf = append(o.buf, p.tagcode...)
- x := int32(s.Index(i)) // permit sign extension to use full 64-bit range
- p.valEnc(o, uint64(x))
- }
- return nil
-}
-
-func size_slice_int32(p *Properties, base structPointer) (n int) {
- s := structPointer_Word32Slice(base, p.field)
- l := s.Len()
- if l == 0 {
- return 0
- }
- for i := 0; i < l; i++ {
- n += len(p.tagcode)
- x := int32(s.Index(i)) // permit sign extension to use full 64-bit range
- n += p.valSize(uint64(x))
- }
- return
-}
-
-// Encode a slice of int32s ([]int32) in packed format.
-func (o *Buffer) enc_slice_packed_int32(p *Properties, base structPointer) error {
- s := structPointer_Word32Slice(base, p.field)
- l := s.Len()
- if l == 0 {
- return ErrNil
- }
- // TODO: Reuse a Buffer.
- buf := NewBuffer(nil)
- for i := 0; i < l; i++ {
- x := int32(s.Index(i)) // permit sign extension to use full 64-bit range
- p.valEnc(buf, uint64(x))
- }
-
- o.buf = append(o.buf, p.tagcode...)
- o.EncodeVarint(uint64(len(buf.buf)))
- o.buf = append(o.buf, buf.buf...)
- return nil
-}
-
-func size_slice_packed_int32(p *Properties, base structPointer) (n int) {
- s := structPointer_Word32Slice(base, p.field)
- l := s.Len()
- if l == 0 {
- return 0
- }
- var bufSize int
- for i := 0; i < l; i++ {
- x := int32(s.Index(i)) // permit sign extension to use full 64-bit range
- bufSize += p.valSize(uint64(x))
- }
-
- n += len(p.tagcode)
- n += sizeVarint(uint64(bufSize))
- n += bufSize
- return
-}
-
-// Encode a slice of uint32s ([]uint32).
-// Exactly the same as int32, except for no sign extension.
-func (o *Buffer) enc_slice_uint32(p *Properties, base structPointer) error {
- s := structPointer_Word32Slice(base, p.field)
- l := s.Len()
- if l == 0 {
- return ErrNil
- }
- for i := 0; i < l; i++ {
- o.buf = append(o.buf, p.tagcode...)
- x := s.Index(i)
- p.valEnc(o, uint64(x))
- }
- return nil
-}
-
-func size_slice_uint32(p *Properties, base structPointer) (n int) {
- s := structPointer_Word32Slice(base, p.field)
- l := s.Len()
- if l == 0 {
- return 0
- }
- for i := 0; i < l; i++ {
- n += len(p.tagcode)
- x := s.Index(i)
- n += p.valSize(uint64(x))
- }
- return
-}
-
-// Encode a slice of uint32s ([]uint32) in packed format.
-// Exactly the same as int32, except for no sign extension.
-func (o *Buffer) enc_slice_packed_uint32(p *Properties, base structPointer) error {
- s := structPointer_Word32Slice(base, p.field)
- l := s.Len()
- if l == 0 {
- return ErrNil
- }
- // TODO: Reuse a Buffer.
- buf := NewBuffer(nil)
- for i := 0; i < l; i++ {
- p.valEnc(buf, uint64(s.Index(i)))
- }
-
- o.buf = append(o.buf, p.tagcode...)
- o.EncodeVarint(uint64(len(buf.buf)))
- o.buf = append(o.buf, buf.buf...)
- return nil
-}
-
-func size_slice_packed_uint32(p *Properties, base structPointer) (n int) {
- s := structPointer_Word32Slice(base, p.field)
- l := s.Len()
- if l == 0 {
- return 0
- }
- var bufSize int
- for i := 0; i < l; i++ {
- bufSize += p.valSize(uint64(s.Index(i)))
- }
-
- n += len(p.tagcode)
- n += sizeVarint(uint64(bufSize))
- n += bufSize
- return
-}
-
-// Encode a slice of int64s ([]int64).
-func (o *Buffer) enc_slice_int64(p *Properties, base structPointer) error {
- s := structPointer_Word64Slice(base, p.field)
- l := s.Len()
- if l == 0 {
- return ErrNil
- }
- for i := 0; i < l; i++ {
- o.buf = append(o.buf, p.tagcode...)
- p.valEnc(o, s.Index(i))
- }
- return nil
-}
-
-func size_slice_int64(p *Properties, base structPointer) (n int) {
- s := structPointer_Word64Slice(base, p.field)
- l := s.Len()
- if l == 0 {
- return 0
- }
- for i := 0; i < l; i++ {
- n += len(p.tagcode)
- n += p.valSize(s.Index(i))
- }
- return
-}
-
-// Encode a slice of int64s ([]int64) in packed format.
-func (o *Buffer) enc_slice_packed_int64(p *Properties, base structPointer) error {
- s := structPointer_Word64Slice(base, p.field)
- l := s.Len()
- if l == 0 {
- return ErrNil
- }
- // TODO: Reuse a Buffer.
- buf := NewBuffer(nil)
- for i := 0; i < l; i++ {
- p.valEnc(buf, s.Index(i))
- }
-
- o.buf = append(o.buf, p.tagcode...)
- o.EncodeVarint(uint64(len(buf.buf)))
- o.buf = append(o.buf, buf.buf...)
- return nil
-}
-
-func size_slice_packed_int64(p *Properties, base structPointer) (n int) {
- s := structPointer_Word64Slice(base, p.field)
- l := s.Len()
- if l == 0 {
- return 0
- }
- var bufSize int
- for i := 0; i < l; i++ {
- bufSize += p.valSize(s.Index(i))
- }
-
- n += len(p.tagcode)
- n += sizeVarint(uint64(bufSize))
- n += bufSize
- return
-}
-
-// Encode a slice of slice of bytes ([][]byte).
-func (o *Buffer) enc_slice_slice_byte(p *Properties, base structPointer) error {
- ss := *structPointer_BytesSlice(base, p.field)
- l := len(ss)
- if l == 0 {
- return ErrNil
- }
- for i := 0; i < l; i++ {
- o.buf = append(o.buf, p.tagcode...)
- o.EncodeRawBytes(ss[i])
- }
- return nil
-}
-
-func size_slice_slice_byte(p *Properties, base structPointer) (n int) {
- ss := *structPointer_BytesSlice(base, p.field)
- l := len(ss)
- if l == 0 {
- return 0
- }
- n += l * len(p.tagcode)
- for i := 0; i < l; i++ {
- n += sizeRawBytes(ss[i])
- }
- return
-}
-
-// Encode a slice of strings ([]string).
-func (o *Buffer) enc_slice_string(p *Properties, base structPointer) error {
- ss := *structPointer_StringSlice(base, p.field)
- l := len(ss)
- for i := 0; i < l; i++ {
- o.buf = append(o.buf, p.tagcode...)
- o.EncodeStringBytes(ss[i])
- }
- return nil
-}
-
-func size_slice_string(p *Properties, base structPointer) (n int) {
- ss := *structPointer_StringSlice(base, p.field)
- l := len(ss)
- n += l * len(p.tagcode)
- for i := 0; i < l; i++ {
- n += sizeStringBytes(ss[i])
- }
- return
-}
-
-// Encode a slice of message structs ([]*struct).
-func (o *Buffer) enc_slice_struct_message(p *Properties, base structPointer) error {
- var state errorState
- s := structPointer_StructPointerSlice(base, p.field)
- l := s.Len()
-
- for i := 0; i < l; i++ {
- structp := s.Index(i)
- if structPointer_IsNil(structp) {
- return errRepeatedHasNil
- }
-
- // Can the object marshal itself?
- if p.isMarshaler {
- m := structPointer_Interface(structp, p.stype).(Marshaler)
- data, err := m.Marshal()
- if err != nil && !state.shouldContinue(err, nil) {
- return err
- }
- o.buf = append(o.buf, p.tagcode...)
- o.EncodeRawBytes(data)
- continue
- }
-
- o.buf = append(o.buf, p.tagcode...)
- err := o.enc_len_struct(p.sprop, structp, &state)
- if err != nil && !state.shouldContinue(err, nil) {
- if err == ErrNil {
- return errRepeatedHasNil
- }
- return err
- }
- }
- return state.err
-}
-
-func size_slice_struct_message(p *Properties, base structPointer) (n int) {
- s := structPointer_StructPointerSlice(base, p.field)
- l := s.Len()
- n += l * len(p.tagcode)
- for i := 0; i < l; i++ {
- structp := s.Index(i)
- if structPointer_IsNil(structp) {
- return // return the size up to this point
- }
-
- // Can the object marshal itself?
- if p.isMarshaler {
- m := structPointer_Interface(structp, p.stype).(Marshaler)
- data, _ := m.Marshal()
- n += sizeRawBytes(data)
- continue
- }
-
- n0 := size_struct(p.sprop, structp)
- n1 := sizeVarint(uint64(n0)) // size of encoded length
- n += n0 + n1
- }
- return
-}
-
-// Encode a slice of group structs ([]*struct).
-func (o *Buffer) enc_slice_struct_group(p *Properties, base structPointer) error {
- var state errorState
- s := structPointer_StructPointerSlice(base, p.field)
- l := s.Len()
-
- for i := 0; i < l; i++ {
- b := s.Index(i)
- if structPointer_IsNil(b) {
- return errRepeatedHasNil
- }
-
- o.EncodeVarint(uint64((p.Tag << 3) | WireStartGroup))
-
- err := o.enc_struct(p.sprop, b)
-
- if err != nil && !state.shouldContinue(err, nil) {
- if err == ErrNil {
- return errRepeatedHasNil
- }
- return err
- }
-
- o.EncodeVarint(uint64((p.Tag << 3) | WireEndGroup))
- }
- return state.err
-}
-
-func size_slice_struct_group(p *Properties, base structPointer) (n int) {
- s := structPointer_StructPointerSlice(base, p.field)
- l := s.Len()
-
- n += l * sizeVarint(uint64((p.Tag<<3)|WireStartGroup))
- n += l * sizeVarint(uint64((p.Tag<<3)|WireEndGroup))
- for i := 0; i < l; i++ {
- b := s.Index(i)
- if structPointer_IsNil(b) {
- return // return size up to this point
- }
-
- n += size_struct(p.sprop, b)
- }
- return
-}
-
-// Encode an extension map.
-func (o *Buffer) enc_map(p *Properties, base structPointer) error {
- exts := structPointer_ExtMap(base, p.field)
- if err := encodeExtensionsMap(*exts); err != nil {
- return err
- }
-
- return o.enc_map_body(*exts)
-}
-
-func (o *Buffer) enc_exts(p *Properties, base structPointer) error {
- exts := structPointer_Extensions(base, p.field)
- if err := encodeExtensions(exts); err != nil {
- return err
- }
- v, _ := exts.extensionsRead()
-
- return o.enc_map_body(v)
-}
-
-func (o *Buffer) enc_map_body(v map[int32]Extension) error {
- // Fast-path for common cases: zero or one extensions.
- if len(v) <= 1 {
- for _, e := range v {
- o.buf = append(o.buf, e.enc...)
- }
- return nil
- }
-
- // Sort keys to provide a deterministic encoding.
- keys := make([]int, 0, len(v))
- for k := range v {
- keys = append(keys, int(k))
- }
- sort.Ints(keys)
-
- for _, k := range keys {
- o.buf = append(o.buf, v[int32(k)].enc...)
- }
- return nil
-}
-
-func size_map(p *Properties, base structPointer) int {
- v := structPointer_ExtMap(base, p.field)
- return extensionsMapSize(*v)
-}
-
-func size_exts(p *Properties, base structPointer) int {
- v := structPointer_Extensions(base, p.field)
- return extensionsSize(v)
-}
-
-// Encode a map field.
-func (o *Buffer) enc_new_map(p *Properties, base structPointer) error {
- var state errorState // XXX: or do we need to plumb this through?
-
- /*
- A map defined as
- map<key_type, value_type> map_field = N;
- is encoded in the same way as
- message MapFieldEntry {
- key_type key = 1;
- value_type value = 2;
- }
- repeated MapFieldEntry map_field = N;
- */
-
- v := structPointer_NewAt(base, p.field, p.mtype).Elem() // map[K]V
- if v.Len() == 0 {
- return nil
- }
-
- keycopy, valcopy, keybase, valbase := mapEncodeScratch(p.mtype)
-
- enc := func() error {
- if err := p.mkeyprop.enc(o, p.mkeyprop, keybase); err != nil {
- return err
- }
- if err := p.mvalprop.enc(o, p.mvalprop, valbase); err != nil && err != ErrNil {
- return err
- }
- return nil
- }
-
- // Don't sort map keys. It is not required by the spec, and C++ doesn't do it.
- for _, key := range v.MapKeys() {
- val := v.MapIndex(key)
-
- keycopy.Set(key)
- valcopy.Set(val)
-
- o.buf = append(o.buf, p.tagcode...)
- if err := o.enc_len_thing(enc, &state); err != nil {
- return err
- }
- }
- return nil
-}
-
-func size_new_map(p *Properties, base structPointer) int {
- v := structPointer_NewAt(base, p.field, p.mtype).Elem() // map[K]V
-
- keycopy, valcopy, keybase, valbase := mapEncodeScratch(p.mtype)
-
- n := 0
- for _, key := range v.MapKeys() {
- val := v.MapIndex(key)
- keycopy.Set(key)
- valcopy.Set(val)
-
- // Tag codes for key and val are the responsibility of the sub-sizer.
- keysize := p.mkeyprop.size(p.mkeyprop, keybase)
- valsize := p.mvalprop.size(p.mvalprop, valbase)
- entry := keysize + valsize
- // Add on tag code and length of map entry itself.
- n += len(p.tagcode) + sizeVarint(uint64(entry)) + entry
- }
- return n
-}
-
-// mapEncodeScratch returns a new reflect.Value matching the map's value type,
-// and a structPointer suitable for passing to an encoder or sizer.
-func mapEncodeScratch(mapType reflect.Type) (keycopy, valcopy reflect.Value, keybase, valbase structPointer) {
- // Prepare addressable doubly-indirect placeholders for the key and value types.
- // This is needed because the element-type encoders expect **T, but the map iteration produces T.
-
- keycopy = reflect.New(mapType.Key()).Elem() // addressable K
- keyptr := reflect.New(reflect.PtrTo(keycopy.Type())).Elem() // addressable *K
- keyptr.Set(keycopy.Addr()) //
- keybase = toStructPointer(keyptr.Addr()) // **K
-
- // Value types are more varied and require special handling.
- switch mapType.Elem().Kind() {
- case reflect.Slice:
- // []byte
- var dummy []byte
- valcopy = reflect.ValueOf(&dummy).Elem() // addressable []byte
- valbase = toStructPointer(valcopy.Addr())
- case reflect.Ptr:
- // message; the generated field type is map[K]*Msg (so V is *Msg),
- // so we only need one level of indirection.
- valcopy = reflect.New(mapType.Elem()).Elem() // addressable V
- valbase = toStructPointer(valcopy.Addr())
- default:
- // everything else
- valcopy = reflect.New(mapType.Elem()).Elem() // addressable V
- valptr := reflect.New(reflect.PtrTo(valcopy.Type())).Elem() // addressable *V
- valptr.Set(valcopy.Addr()) //
- valbase = toStructPointer(valptr.Addr()) // **V
- }
- return
-}
-
-// Encode a struct.
-func (o *Buffer) enc_struct(prop *StructProperties, base structPointer) error {
- var state errorState
- // Encode fields in tag order so that decoders may use optimizations
- // that depend on the ordering.
- // https://developers.google.com/protocol-buffers/docs/encoding#order
- for _, i := range prop.order {
- p := prop.Prop[i]
- if p.enc != nil {
- err := p.enc(o, p, base)
- if err != nil {
- if err == ErrNil {
- if p.Required && state.err == nil {
- state.err = &RequiredNotSetError{p.Name}
- }
- } else if err == errRepeatedHasNil {
- // Give more context to nil values in repeated fields.
- return errors.New("repeated field " + p.OrigName + " has nil element")
- } else if !state.shouldContinue(err, p) {
- return err
- }
- }
- if len(o.buf) > maxMarshalSize {
- return ErrTooLarge
- }
- }
- }
-
- // Do oneof fields.
- if prop.oneofMarshaler != nil {
- m := structPointer_Interface(base, prop.stype).(Message)
- if err := prop.oneofMarshaler(m, o); err == ErrNil {
- return errOneofHasNil
- } else if err != nil {
- return err
- }
- }
-
- // Add unrecognized fields at the end.
- if prop.unrecField.IsValid() {
- v := *structPointer_Bytes(base, prop.unrecField)
- if len(o.buf)+len(v) > maxMarshalSize {
- return ErrTooLarge
- }
- if len(v) > 0 {
- o.buf = append(o.buf, v...)
- }
- }
-
- return state.err
-}
-
-func size_struct(prop *StructProperties, base structPointer) (n int) {
- for _, i := range prop.order {
- p := prop.Prop[i]
- if p.size != nil {
- n += p.size(p, base)
- }
- }
-
- // Add unrecognized fields at the end.
- if prop.unrecField.IsValid() {
- v := *structPointer_Bytes(base, prop.unrecField)
- n += len(v)
- }
-
- // Factor in any oneof fields.
- if prop.oneofSizer != nil {
- m := structPointer_Interface(base, prop.stype).(Message)
- n += prop.oneofSizer(m)
- }
-
- return
-}
-
-var zeroes [20]byte // longer than any conceivable sizeVarint
-
-// Encode a struct, preceded by its encoded length (as a varint).
-func (o *Buffer) enc_len_struct(prop *StructProperties, base structPointer, state *errorState) error {
- return o.enc_len_thing(func() error { return o.enc_struct(prop, base) }, state)
-}
-
-// Encode something, preceded by its encoded length (as a varint).
-func (o *Buffer) enc_len_thing(enc func() error, state *errorState) error {
- iLen := len(o.buf)
- o.buf = append(o.buf, 0, 0, 0, 0) // reserve four bytes for length
- iMsg := len(o.buf)
- err := enc()
- if err != nil && !state.shouldContinue(err, nil) {
- return err
- }
- lMsg := len(o.buf) - iMsg
- lLen := sizeVarint(uint64(lMsg))
- switch x := lLen - (iMsg - iLen); {
- case x > 0: // actual length is x bytes larger than the space we reserved
- // Move msg x bytes right.
- o.buf = append(o.buf, zeroes[:x]...)
- copy(o.buf[iMsg+x:], o.buf[iMsg:iMsg+lMsg])
- case x < 0: // actual length is x bytes smaller than the space we reserved
- // Move msg x bytes left.
- copy(o.buf[iMsg+x:], o.buf[iMsg:iMsg+lMsg])
- o.buf = o.buf[:len(o.buf)+x] // x is negative
- }
- // Encode the length in the reserved space.
- o.buf = o.buf[:iLen]
- o.EncodeVarint(uint64(lMsg))
- o.buf = o.buf[:len(o.buf)+lMsg]
- return state.err
-}
-
-// errorState maintains the first error that occurs and updates that error
-// with additional context.
-type errorState struct {
- err error
-}
-
-// shouldContinue reports whether encoding should continue upon encountering the
-// given error. If the error is RequiredNotSetError, shouldContinue returns true
-// and, if this is the first appearance of that error, remembers it for future
-// reporting.
-//
-// If prop is not nil, it may update any error with additional context about the
-// field with the error.
-func (s *errorState) shouldContinue(err error, prop *Properties) bool {
- // Ignore unset required fields.
- reqNotSet, ok := err.(*RequiredNotSetError)
- if !ok {
- return false
- }
- if s.err == nil {
- if prop != nil {
- err = &RequiredNotSetError{prop.Name + "." + reqNotSet.field}
- }
- s.err = err
- }
- return true
-}
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-11-16 01:43:40 +0000