From 55e79063d6edbbf4560fd14edc45ce9558afaf7a Mon Sep 17 00:00:00 2001 From: Krzysiek Madejski Date: Thu, 21 Feb 2019 20:28:13 +0100 Subject: Add initial WhatsApp support (#711) --- .../github.com/golang/protobuf/proto/properties.go | 442 +++------------------ 1 file changed, 57 insertions(+), 385 deletions(-) (limited to 'vendor/github.com/golang/protobuf/proto/properties.go') diff --git a/vendor/github.com/golang/protobuf/proto/properties.go b/vendor/github.com/golang/protobuf/proto/properties.go index ec2289c0..50b99b83 100644 --- a/vendor/github.com/golang/protobuf/proto/properties.go +++ b/vendor/github.com/golang/protobuf/proto/properties.go @@ -58,42 +58,6 @@ const ( WireFixed32 = 5 ) -const startSize = 10 // initial slice/string sizes - -// Encoders are defined in encode.go -// An encoder outputs the full representation of a field, including its -// tag and encoder type. -type encoder func(p *Buffer, prop *Properties, base structPointer) error - -// A valueEncoder encodes a single integer in a particular encoding. -type valueEncoder func(o *Buffer, x uint64) error - -// Sizers are defined in encode.go -// A sizer returns the encoded size of a field, including its tag and encoder -// type. -type sizer func(prop *Properties, base structPointer) int - -// A valueSizer returns the encoded size of a single integer in a particular -// encoding. -type valueSizer func(x uint64) int - -// Decoders are defined in decode.go -// A decoder creates a value from its wire representation. -// Unrecognized subelements are saved in unrec. -type decoder func(p *Buffer, prop *Properties, base structPointer) error - -// A valueDecoder decodes a single integer in a particular encoding. -type valueDecoder func(o *Buffer) (x uint64, err error) - -// A oneofMarshaler does the marshaling for all oneof fields in a message. -type oneofMarshaler func(Message, *Buffer) error - -// A oneofUnmarshaler does the unmarshaling for a oneof field in a message. -type oneofUnmarshaler func(Message, int, int, *Buffer) (bool, error) - -// A oneofSizer does the sizing for all oneof fields in a message. -type oneofSizer func(Message) int - // tagMap is an optimization over map[int]int for typical protocol buffer // use-cases. Encoded protocol buffers are often in tag order with small tag // numbers. @@ -140,13 +104,6 @@ type StructProperties struct { decoderTags tagMap // map from proto tag to struct field number decoderOrigNames map[string]int // map from original name to struct field number order []int // list of struct field numbers in tag order - unrecField field // field id of the XXX_unrecognized []byte field - extendable bool // is this an extendable proto - - oneofMarshaler oneofMarshaler - oneofUnmarshaler oneofUnmarshaler - oneofSizer oneofSizer - stype reflect.Type // OneofTypes contains information about the oneof fields in this message. // It is keyed by the original name of a field. @@ -182,41 +139,24 @@ type Properties struct { Repeated bool Packed bool // relevant for repeated primitives only Enum string // set for enum types only - proto3 bool // whether this is known to be a proto3 field; set for []byte only + proto3 bool // whether this is known to be a proto3 field oneof bool // whether this is a oneof field Default string // default value HasDefault bool // whether an explicit default was provided - def_uint64 uint64 - - enc encoder - valEnc valueEncoder // set for bool and numeric types only - field field - tagcode []byte // encoding of EncodeVarint((Tag<<3)|WireType) - tagbuf [8]byte - stype reflect.Type // set for struct types only - sprop *StructProperties // set for struct types only - isMarshaler bool - isUnmarshaler bool - - mtype reflect.Type // set for map types only - mkeyprop *Properties // set for map types only - mvalprop *Properties // set for map types only - - size sizer - valSize valueSizer // set for bool and numeric types only - - dec decoder - valDec valueDecoder // set for bool and numeric types only - - // If this is a packable field, this will be the decoder for the packed version of the field. - packedDec decoder + + stype reflect.Type // set for struct types only + sprop *StructProperties // set for struct types only + + mtype reflect.Type // set for map types only + MapKeyProp *Properties // set for map types only + MapValProp *Properties // set for map types only } // String formats the properties in the protobuf struct field tag style. func (p *Properties) String() string { s := p.Wire - s = "," + s += "," s += strconv.Itoa(p.Tag) if p.Required { s += ",req" @@ -262,29 +202,14 @@ func (p *Properties) Parse(s string) { switch p.Wire { case "varint": p.WireType = WireVarint - p.valEnc = (*Buffer).EncodeVarint - p.valDec = (*Buffer).DecodeVarint - p.valSize = sizeVarint case "fixed32": p.WireType = WireFixed32 - p.valEnc = (*Buffer).EncodeFixed32 - p.valDec = (*Buffer).DecodeFixed32 - p.valSize = sizeFixed32 case "fixed64": p.WireType = WireFixed64 - p.valEnc = (*Buffer).EncodeFixed64 - p.valDec = (*Buffer).DecodeFixed64 - p.valSize = sizeFixed64 case "zigzag32": p.WireType = WireVarint - p.valEnc = (*Buffer).EncodeZigzag32 - p.valDec = (*Buffer).DecodeZigzag32 - p.valSize = sizeZigzag32 case "zigzag64": p.WireType = WireVarint - p.valEnc = (*Buffer).EncodeZigzag64 - p.valDec = (*Buffer).DecodeZigzag64 - p.valSize = sizeZigzag64 case "bytes", "group": p.WireType = WireBytes // no numeric converter for non-numeric types @@ -299,6 +224,7 @@ func (p *Properties) Parse(s string) { return } +outer: for i := 2; i < len(fields); i++ { f := fields[i] switch { @@ -326,256 +252,41 @@ func (p *Properties) Parse(s string) { if i+1 < len(fields) { // Commas aren't escaped, and def is always last. p.Default += "," + strings.Join(fields[i+1:], ",") - break + break outer } } } } -func logNoSliceEnc(t1, t2 reflect.Type) { - fmt.Fprintf(os.Stderr, "proto: no slice oenc for %T = []%T\n", t1, t2) -} - var protoMessageType = reflect.TypeOf((*Message)(nil)).Elem() -// Initialize the fields for encoding and decoding. -func (p *Properties) setEncAndDec(typ reflect.Type, f *reflect.StructField, lockGetProp bool) { - p.enc = nil - p.dec = nil - p.size = nil - +// setFieldProps initializes the field properties for submessages and maps. +func (p *Properties) setFieldProps(typ reflect.Type, f *reflect.StructField, lockGetProp bool) { switch t1 := typ; t1.Kind() { - default: - fmt.Fprintf(os.Stderr, "proto: no coders for %v\n", t1) - - // proto3 scalar types - - case reflect.Bool: - p.enc = (*Buffer).enc_proto3_bool - p.dec = (*Buffer).dec_proto3_bool - p.size = size_proto3_bool - case reflect.Int32: - p.enc = (*Buffer).enc_proto3_int32 - p.dec = (*Buffer).dec_proto3_int32 - p.size = size_proto3_int32 - case reflect.Uint32: - p.enc = (*Buffer).enc_proto3_uint32 - p.dec = (*Buffer).dec_proto3_int32 // can reuse - p.size = size_proto3_uint32 - case reflect.Int64, reflect.Uint64: - p.enc = (*Buffer).enc_proto3_int64 - p.dec = (*Buffer).dec_proto3_int64 - p.size = size_proto3_int64 - case reflect.Float32: - p.enc = (*Buffer).enc_proto3_uint32 // can just treat them as bits - p.dec = (*Buffer).dec_proto3_int32 - p.size = size_proto3_uint32 - case reflect.Float64: - p.enc = (*Buffer).enc_proto3_int64 // can just treat them as bits - p.dec = (*Buffer).dec_proto3_int64 - p.size = size_proto3_int64 - case reflect.String: - p.enc = (*Buffer).enc_proto3_string - p.dec = (*Buffer).dec_proto3_string - p.size = size_proto3_string - case reflect.Ptr: - switch t2 := t1.Elem(); t2.Kind() { - default: - fmt.Fprintf(os.Stderr, "proto: no encoder function for %v -> %v\n", t1, t2) - break - case reflect.Bool: - p.enc = (*Buffer).enc_bool - p.dec = (*Buffer).dec_bool - p.size = size_bool - case reflect.Int32: - p.enc = (*Buffer).enc_int32 - p.dec = (*Buffer).dec_int32 - p.size = size_int32 - case reflect.Uint32: - p.enc = (*Buffer).enc_uint32 - p.dec = (*Buffer).dec_int32 // can reuse - p.size = size_uint32 - case reflect.Int64, reflect.Uint64: - p.enc = (*Buffer).enc_int64 - p.dec = (*Buffer).dec_int64 - p.size = size_int64 - case reflect.Float32: - p.enc = (*Buffer).enc_uint32 // can just treat them as bits - p.dec = (*Buffer).dec_int32 - p.size = size_uint32 - case reflect.Float64: - p.enc = (*Buffer).enc_int64 // can just treat them as bits - p.dec = (*Buffer).dec_int64 - p.size = size_int64 - case reflect.String: - p.enc = (*Buffer).enc_string - p.dec = (*Buffer).dec_string - p.size = size_string - case reflect.Struct: + if t1.Elem().Kind() == reflect.Struct { p.stype = t1.Elem() - p.isMarshaler = isMarshaler(t1) - p.isUnmarshaler = isUnmarshaler(t1) - if p.Wire == "bytes" { - p.enc = (*Buffer).enc_struct_message - p.dec = (*Buffer).dec_struct_message - p.size = size_struct_message - } else { - p.enc = (*Buffer).enc_struct_group - p.dec = (*Buffer).dec_struct_group - p.size = size_struct_group - } } case reflect.Slice: - switch t2 := t1.Elem(); t2.Kind() { - default: - logNoSliceEnc(t1, t2) - break - case reflect.Bool: - if p.Packed { - p.enc = (*Buffer).enc_slice_packed_bool - p.size = size_slice_packed_bool - } else { - p.enc = (*Buffer).enc_slice_bool - p.size = size_slice_bool - } - p.dec = (*Buffer).dec_slice_bool - p.packedDec = (*Buffer).dec_slice_packed_bool - case reflect.Int32: - if p.Packed { - p.enc = (*Buffer).enc_slice_packed_int32 - p.size = size_slice_packed_int32 - } else { - p.enc = (*Buffer).enc_slice_int32 - p.size = size_slice_int32 - } - p.dec = (*Buffer).dec_slice_int32 - p.packedDec = (*Buffer).dec_slice_packed_int32 - case reflect.Uint32: - if p.Packed { - p.enc = (*Buffer).enc_slice_packed_uint32 - p.size = size_slice_packed_uint32 - } else { - p.enc = (*Buffer).enc_slice_uint32 - p.size = size_slice_uint32 - } - p.dec = (*Buffer).dec_slice_int32 - p.packedDec = (*Buffer).dec_slice_packed_int32 - case reflect.Int64, reflect.Uint64: - if p.Packed { - p.enc = (*Buffer).enc_slice_packed_int64 - p.size = size_slice_packed_int64 - } else { - p.enc = (*Buffer).enc_slice_int64 - p.size = size_slice_int64 - } - p.dec = (*Buffer).dec_slice_int64 - p.packedDec = (*Buffer).dec_slice_packed_int64 - case reflect.Uint8: - p.dec = (*Buffer).dec_slice_byte - if p.proto3 { - p.enc = (*Buffer).enc_proto3_slice_byte - p.size = size_proto3_slice_byte - } else { - p.enc = (*Buffer).enc_slice_byte - p.size = size_slice_byte - } - case reflect.Float32, reflect.Float64: - switch t2.Bits() { - case 32: - // can just treat them as bits - if p.Packed { - p.enc = (*Buffer).enc_slice_packed_uint32 - p.size = size_slice_packed_uint32 - } else { - p.enc = (*Buffer).enc_slice_uint32 - p.size = size_slice_uint32 - } - p.dec = (*Buffer).dec_slice_int32 - p.packedDec = (*Buffer).dec_slice_packed_int32 - case 64: - // can just treat them as bits - if p.Packed { - p.enc = (*Buffer).enc_slice_packed_int64 - p.size = size_slice_packed_int64 - } else { - p.enc = (*Buffer).enc_slice_int64 - p.size = size_slice_int64 - } - p.dec = (*Buffer).dec_slice_int64 - p.packedDec = (*Buffer).dec_slice_packed_int64 - default: - logNoSliceEnc(t1, t2) - break - } - case reflect.String: - p.enc = (*Buffer).enc_slice_string - p.dec = (*Buffer).dec_slice_string - p.size = size_slice_string - case reflect.Ptr: - switch t3 := t2.Elem(); t3.Kind() { - default: - fmt.Fprintf(os.Stderr, "proto: no ptr oenc for %T -> %T -> %T\n", t1, t2, t3) - break - case reflect.Struct: - p.stype = t2.Elem() - p.isMarshaler = isMarshaler(t2) - p.isUnmarshaler = isUnmarshaler(t2) - if p.Wire == "bytes" { - p.enc = (*Buffer).enc_slice_struct_message - p.dec = (*Buffer).dec_slice_struct_message - p.size = size_slice_struct_message - } else { - p.enc = (*Buffer).enc_slice_struct_group - p.dec = (*Buffer).dec_slice_struct_group - p.size = size_slice_struct_group - } - } - case reflect.Slice: - switch t2.Elem().Kind() { - default: - fmt.Fprintf(os.Stderr, "proto: no slice elem oenc for %T -> %T -> %T\n", t1, t2, t2.Elem()) - break - case reflect.Uint8: - p.enc = (*Buffer).enc_slice_slice_byte - p.dec = (*Buffer).dec_slice_slice_byte - p.size = size_slice_slice_byte - } + if t2 := t1.Elem(); t2.Kind() == reflect.Ptr && t2.Elem().Kind() == reflect.Struct { + p.stype = t2.Elem() } case reflect.Map: - p.enc = (*Buffer).enc_new_map - p.dec = (*Buffer).dec_new_map - p.size = size_new_map - p.mtype = t1 - p.mkeyprop = &Properties{} - p.mkeyprop.init(reflect.PtrTo(p.mtype.Key()), "Key", f.Tag.Get("protobuf_key"), nil, lockGetProp) - p.mvalprop = &Properties{} + p.MapKeyProp = &Properties{} + p.MapKeyProp.init(reflect.PtrTo(p.mtype.Key()), "Key", f.Tag.Get("protobuf_key"), nil, lockGetProp) + p.MapValProp = &Properties{} vtype := p.mtype.Elem() if vtype.Kind() != reflect.Ptr && vtype.Kind() != reflect.Slice { // The value type is not a message (*T) or bytes ([]byte), // so we need encoders for the pointer to this type. vtype = reflect.PtrTo(vtype) } - p.mvalprop.init(vtype, "Value", f.Tag.Get("protobuf_val"), nil, lockGetProp) + p.MapValProp.init(vtype, "Value", f.Tag.Get("protobuf_val"), nil, lockGetProp) } - // precalculate tag code - wire := p.WireType - if p.Packed { - wire = WireBytes - } - x := uint32(p.Tag)<<3 | uint32(wire) - i := 0 - for i = 0; x > 127; i++ { - p.tagbuf[i] = 0x80 | uint8(x&0x7F) - x >>= 7 - } - p.tagbuf[i] = uint8(x) - p.tagcode = p.tagbuf[0 : i+1] - if p.stype != nil { if lockGetProp { p.sprop = GetProperties(p.stype) @@ -586,32 +297,9 @@ func (p *Properties) setEncAndDec(typ reflect.Type, f *reflect.StructField, lock } var ( - marshalerType = reflect.TypeOf((*Marshaler)(nil)).Elem() - unmarshalerType = reflect.TypeOf((*Unmarshaler)(nil)).Elem() + marshalerType = reflect.TypeOf((*Marshaler)(nil)).Elem() ) -// isMarshaler reports whether type t implements Marshaler. -func isMarshaler(t reflect.Type) bool { - // We're checking for (likely) pointer-receiver methods - // so if t is not a pointer, something is very wrong. - // The calls above only invoke isMarshaler on pointer types. - if t.Kind() != reflect.Ptr { - panic("proto: misuse of isMarshaler") - } - return t.Implements(marshalerType) -} - -// isUnmarshaler reports whether type t implements Unmarshaler. -func isUnmarshaler(t reflect.Type) bool { - // We're checking for (likely) pointer-receiver methods - // so if t is not a pointer, something is very wrong. - // The calls above only invoke isUnmarshaler on pointer types. - if t.Kind() != reflect.Ptr { - panic("proto: misuse of isUnmarshaler") - } - return t.Implements(unmarshalerType) -} - // Init populates the properties from a protocol buffer struct tag. func (p *Properties) Init(typ reflect.Type, name, tag string, f *reflect.StructField) { p.init(typ, name, tag, f, true) @@ -621,14 +309,11 @@ func (p *Properties) init(typ reflect.Type, name, tag string, f *reflect.StructF // "bytes,49,opt,def=hello!" p.Name = name p.OrigName = name - if f != nil { - p.field = toField(f) - } if tag == "" { return } p.Parse(tag) - p.setEncAndDec(typ, f, lockGetProp) + p.setFieldProps(typ, f, lockGetProp) } var ( @@ -678,9 +363,6 @@ func getPropertiesLocked(t reflect.Type) *StructProperties { propertiesMap[t] = prop // build properties - prop.extendable = reflect.PtrTo(t).Implements(extendableProtoType) || - reflect.PtrTo(t).Implements(extendableProtoV1Type) - prop.unrecField = invalidField prop.Prop = make([]*Properties, t.NumField()) prop.order = make([]int, t.NumField()) @@ -690,17 +372,6 @@ func getPropertiesLocked(t reflect.Type) *StructProperties { name := f.Name p.init(f.Type, name, f.Tag.Get("protobuf"), &f, false) - if f.Name == "XXX_InternalExtensions" { // special case - p.enc = (*Buffer).enc_exts - p.dec = nil // not needed - p.size = size_exts - } else if f.Name == "XXX_extensions" { // special case - p.enc = (*Buffer).enc_map - p.dec = nil // not needed - p.size = size_map - } else if f.Name == "XXX_unrecognized" { // special case - prop.unrecField = toField(&f) - } oneof := f.Tag.Get("protobuf_oneof") // special case if oneof != "" { // Oneof fields don't use the traditional protobuf tag. @@ -715,9 +386,6 @@ func getPropertiesLocked(t reflect.Type) *StructProperties { } print("\n") } - if p.enc == nil && !strings.HasPrefix(f.Name, "XXX_") && oneof == "" { - fmt.Fprintln(os.Stderr, "proto: no encoder for", f.Name, f.Type.String(), "[GetProperties]") - } } // Re-order prop.order. @@ -728,8 +396,7 @@ func getPropertiesLocked(t reflect.Type) *StructProperties { } if om, ok := reflect.Zero(reflect.PtrTo(t)).Interface().(oneofMessage); ok { var oots []interface{} - prop.oneofMarshaler, prop.oneofUnmarshaler, prop.oneofSizer, oots = om.XXX_OneofFuncs() - prop.stype = t + _, _, _, oots = om.XXX_OneofFuncs() // Interpret oneof metadata. prop.OneofTypes = make(map[string]*OneofProperties) @@ -779,30 +446,6 @@ func getPropertiesLocked(t reflect.Type) *StructProperties { return prop } -// Return the Properties object for the x[0]'th field of the structure. -func propByIndex(t reflect.Type, x []int) *Properties { - if len(x) != 1 { - fmt.Fprintf(os.Stderr, "proto: field index dimension %d (not 1) for type %s\n", len(x), t) - return nil - } - prop := GetProperties(t) - return prop.Prop[x[0]] -} - -// Get the address and type of a pointer to a struct from an interface. -func getbase(pb Message) (t reflect.Type, b structPointer, err error) { - if pb == nil { - err = ErrNil - return - } - // get the reflect type of the pointer to the struct. - t = reflect.TypeOf(pb) - // get the address of the struct. - value := reflect.ValueOf(pb) - b = toStructPointer(value) - return -} - // A global registry of enum types. // The generated code will register the generated maps by calling RegisterEnum. @@ -826,20 +469,42 @@ func EnumValueMap(enumType string) map[string]int32 { // A registry of all linked message types. // The string is a fully-qualified proto name ("pkg.Message"). var ( - protoTypes = make(map[string]reflect.Type) - revProtoTypes = make(map[reflect.Type]string) + protoTypedNils = make(map[string]Message) // a map from proto names to typed nil pointers + protoMapTypes = make(map[string]reflect.Type) // a map from proto names to map types + revProtoTypes = make(map[reflect.Type]string) ) // RegisterType is called from generated code and maps from the fully qualified // proto name to the type (pointer to struct) of the protocol buffer. func RegisterType(x Message, name string) { - if _, ok := protoTypes[name]; ok { + if _, ok := protoTypedNils[name]; ok { // TODO: Some day, make this a panic. log.Printf("proto: duplicate proto type registered: %s", name) return } t := reflect.TypeOf(x) - protoTypes[name] = t + if v := reflect.ValueOf(x); v.Kind() == reflect.Ptr && v.Pointer() == 0 { + // Generated code always calls RegisterType with nil x. + // This check is just for extra safety. + protoTypedNils[name] = x + } else { + protoTypedNils[name] = reflect.Zero(t).Interface().(Message) + } + revProtoTypes[t] = name +} + +// RegisterMapType is called from generated code and maps from the fully qualified +// proto name to the native map type of the proto map definition. +func RegisterMapType(x interface{}, name string) { + if reflect.TypeOf(x).Kind() != reflect.Map { + panic(fmt.Sprintf("RegisterMapType(%T, %q); want map", x, name)) + } + if _, ok := protoMapTypes[name]; ok { + log.Printf("proto: duplicate proto type registered: %s", name) + return + } + t := reflect.TypeOf(x) + protoMapTypes[name] = t revProtoTypes[t] = name } @@ -855,7 +520,14 @@ func MessageName(x Message) string { } // MessageType returns the message type (pointer to struct) for a named message. -func MessageType(name string) reflect.Type { return protoTypes[name] } +// The type is not guaranteed to implement proto.Message if the name refers to a +// map entry. +func MessageType(name string) reflect.Type { + if t, ok := protoTypedNils[name]; ok { + return reflect.TypeOf(t) + } + return protoMapTypes[name] +} // A registry of all linked proto files. var ( -- cgit v1.2.3