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- package proto
- import (
- "bytes"
- "log"
- "reflect"
- "strings"
- )
- func Equal(a, b Message) bool {
- if a == nil || b == nil {
- return a == b
- }
- v1, v2 := reflect.ValueOf(a), reflect.ValueOf(b)
- if v1.Type() != v2.Type() {
- return false
- }
- if v1.Kind() == reflect.Ptr {
- if v1.IsNil() {
- return v2.IsNil()
- }
- if v2.IsNil() {
- return false
- }
- v1, v2 = v1.Elem(), v2.Elem()
- }
- if v1.Kind() != reflect.Struct {
- return false
- }
- return equalStruct(v1, v2)
- }
- func equalStruct(v1, v2 reflect.Value) bool {
- sprop := GetProperties(v1.Type())
- for i := 0; i < v1.NumField(); i++ {
- f := v1.Type().Field(i)
- if strings.HasPrefix(f.Name, "XXX_") {
- continue
- }
- f1, f2 := v1.Field(i), v2.Field(i)
- if f.Type.Kind() == reflect.Ptr {
- if n1, n2 := f1.IsNil(), f2.IsNil(); n1 && n2 {
-
- continue
- } else if n1 != n2 {
-
- return false
- }
- f1, f2 = f1.Elem(), f2.Elem()
- }
- if !equalAny(f1, f2, sprop.Prop[i]) {
- return false
- }
- }
- if em1 := v1.FieldByName("XXX_InternalExtensions"); em1.IsValid() {
- em2 := v2.FieldByName("XXX_InternalExtensions")
- if !equalExtensions(v1.Type(), em1.Interface().(XXX_InternalExtensions), em2.Interface().(XXX_InternalExtensions)) {
- return false
- }
- }
- if em1 := v1.FieldByName("XXX_extensions"); em1.IsValid() {
- em2 := v2.FieldByName("XXX_extensions")
- if !equalExtMap(v1.Type(), em1.Interface().(map[int32]Extension), em2.Interface().(map[int32]Extension)) {
- return false
- }
- }
- uf := v1.FieldByName("XXX_unrecognized")
- if !uf.IsValid() {
- return true
- }
- u1 := uf.Bytes()
- u2 := v2.FieldByName("XXX_unrecognized").Bytes()
- return bytes.Equal(u1, u2)
- }
- func equalAny(v1, v2 reflect.Value, prop *Properties) bool {
- if v1.Type() == protoMessageType {
- m1, _ := v1.Interface().(Message)
- m2, _ := v2.Interface().(Message)
- return Equal(m1, m2)
- }
- switch v1.Kind() {
- case reflect.Bool:
- return v1.Bool() == v2.Bool()
- case reflect.Float32, reflect.Float64:
- return v1.Float() == v2.Float()
- case reflect.Int32, reflect.Int64:
- return v1.Int() == v2.Int()
- case reflect.Interface:
-
- n1, n2 := v1.IsNil(), v2.IsNil()
- if n1 || n2 {
- return n1 == n2
- }
- e1, e2 := v1.Elem(), v2.Elem()
- if e1.Type() != e2.Type() {
- return false
- }
- return equalAny(e1, e2, nil)
- case reflect.Map:
- if v1.Len() != v2.Len() {
- return false
- }
- for _, key := range v1.MapKeys() {
- val2 := v2.MapIndex(key)
- if !val2.IsValid() {
-
- return false
- }
- if !equalAny(v1.MapIndex(key), val2, nil) {
- return false
- }
- }
- return true
- case reflect.Ptr:
-
- if v1.IsNil() && v2.IsNil() {
- return true
- }
- if v1.IsNil() != v2.IsNil() {
- return false
- }
- return equalAny(v1.Elem(), v2.Elem(), prop)
- case reflect.Slice:
- if v1.Type().Elem().Kind() == reflect.Uint8 {
-
-
-
- if prop != nil && prop.proto3 && v1.Len() == 0 && v2.Len() == 0 {
- return true
- }
- if v1.IsNil() != v2.IsNil() {
- return false
- }
- return bytes.Equal(v1.Interface().([]byte), v2.Interface().([]byte))
- }
- if v1.Len() != v2.Len() {
- return false
- }
- for i := 0; i < v1.Len(); i++ {
- if !equalAny(v1.Index(i), v2.Index(i), prop) {
- return false
- }
- }
- return true
- case reflect.String:
- return v1.Interface().(string) == v2.Interface().(string)
- case reflect.Struct:
- return equalStruct(v1, v2)
- case reflect.Uint32, reflect.Uint64:
- return v1.Uint() == v2.Uint()
- }
-
- log.Printf("proto: don't know how to compare %v", v1)
- return false
- }
- func equalExtensions(base reflect.Type, x1, x2 XXX_InternalExtensions) bool {
- em1, _ := x1.extensionsRead()
- em2, _ := x2.extensionsRead()
- return equalExtMap(base, em1, em2)
- }
- func equalExtMap(base reflect.Type, em1, em2 map[int32]Extension) bool {
- if len(em1) != len(em2) {
- return false
- }
- for extNum, e1 := range em1 {
- e2, ok := em2[extNum]
- if !ok {
- return false
- }
- m1, m2 := e1.value, e2.value
- if m1 == nil && m2 == nil {
-
- if bytes.Equal(e1.enc, e2.enc) {
- continue
- }
-
-
- }
- if m1 != nil && m2 != nil {
-
- if !equalAny(reflect.ValueOf(m1), reflect.ValueOf(m2), nil) {
- return false
- }
- continue
- }
-
-
- var desc *ExtensionDesc
- if m := extensionMaps[base]; m != nil {
- desc = m[extNum]
- }
- if desc == nil {
-
-
-
-
- log.Printf("proto: don't know how to compare extension %d of %v", extNum, base)
- return false
- }
- var err error
- if m1 == nil {
- m1, err = decodeExtension(e1.enc, desc)
- }
- if m2 == nil && err == nil {
- m2, err = decodeExtension(e2.enc, desc)
- }
- if err != nil {
-
- log.Printf("proto: badly encoded extension %d of %v: %v", extNum, base, err)
- return false
- }
- if !equalAny(reflect.ValueOf(m1), reflect.ValueOf(m2), nil) {
- return false
- }
- }
- return true
- }
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