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author | Wim <wim@42.be> | 2020-08-10 00:29:54 +0200 |
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committer | GitHub <noreply@github.com> | 2020-08-10 00:29:54 +0200 |
commit | 4e50fd864921c556988c919269448efdb90fa961 (patch) | |
tree | a3625f03f8de3c4f3841364000a4ea3aa42c1533 /vendor/google.golang.org/protobuf/internal/impl/merge.go | |
parent | dfdffa0027334e55ce213fc6eb62206dbf48baf6 (diff) | |
download | matterbridge-msglm-4e50fd864921c556988c919269448efdb90fa961.tar.gz matterbridge-msglm-4e50fd864921c556988c919269448efdb90fa961.tar.bz2 matterbridge-msglm-4e50fd864921c556988c919269448efdb90fa961.zip |
Use mattermost v5 module (#1192)
Diffstat (limited to 'vendor/google.golang.org/protobuf/internal/impl/merge.go')
-rw-r--r-- | vendor/google.golang.org/protobuf/internal/impl/merge.go | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/vendor/google.golang.org/protobuf/internal/impl/merge.go b/vendor/google.golang.org/protobuf/internal/impl/merge.go new file mode 100644 index 00000000..cdc4267d --- /dev/null +++ b/vendor/google.golang.org/protobuf/internal/impl/merge.go @@ -0,0 +1,176 @@ +// Copyright 2020 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package impl + +import ( + "fmt" + "reflect" + + "google.golang.org/protobuf/proto" + pref "google.golang.org/protobuf/reflect/protoreflect" + piface "google.golang.org/protobuf/runtime/protoiface" +) + +type mergeOptions struct{} + +func (o mergeOptions) Merge(dst, src proto.Message) { + proto.Merge(dst, src) +} + +// merge is protoreflect.Methods.Merge. +func (mi *MessageInfo) merge(in piface.MergeInput) piface.MergeOutput { + dp, ok := mi.getPointer(in.Destination) + if !ok { + return piface.MergeOutput{} + } + sp, ok := mi.getPointer(in.Source) + if !ok { + return piface.MergeOutput{} + } + mi.mergePointer(dp, sp, mergeOptions{}) + return piface.MergeOutput{Flags: piface.MergeComplete} +} + +func (mi *MessageInfo) mergePointer(dst, src pointer, opts mergeOptions) { + mi.init() + if dst.IsNil() { + panic(fmt.Sprintf("invalid value: merging into nil message")) + } + if src.IsNil() { + return + } + for _, f := range mi.orderedCoderFields { + if f.funcs.merge == nil { + continue + } + sfptr := src.Apply(f.offset) + if f.isPointer && sfptr.Elem().IsNil() { + continue + } + f.funcs.merge(dst.Apply(f.offset), sfptr, f, opts) + } + if mi.extensionOffset.IsValid() { + sext := src.Apply(mi.extensionOffset).Extensions() + dext := dst.Apply(mi.extensionOffset).Extensions() + if *dext == nil { + *dext = make(map[int32]ExtensionField) + } + for num, sx := range *sext { + xt := sx.Type() + xi := getExtensionFieldInfo(xt) + if xi.funcs.merge == nil { + continue + } + dx := (*dext)[num] + var dv pref.Value + if dx.Type() == sx.Type() { + dv = dx.Value() + } + if !dv.IsValid() && xi.unmarshalNeedsValue { + dv = xt.New() + } + dv = xi.funcs.merge(dv, sx.Value(), opts) + dx.Set(sx.Type(), dv) + (*dext)[num] = dx + } + } + if mi.unknownOffset.IsValid() { + du := dst.Apply(mi.unknownOffset).Bytes() + su := src.Apply(mi.unknownOffset).Bytes() + if len(*su) > 0 { + *du = append(*du, *su...) + } + } +} + +func mergeScalarValue(dst, src pref.Value, opts mergeOptions) pref.Value { + return src +} + +func mergeBytesValue(dst, src pref.Value, opts mergeOptions) pref.Value { + return pref.ValueOfBytes(append(emptyBuf[:], src.Bytes()...)) +} + +func mergeListValue(dst, src pref.Value, opts mergeOptions) pref.Value { + dstl := dst.List() + srcl := src.List() + for i, llen := 0, srcl.Len(); i < llen; i++ { + dstl.Append(srcl.Get(i)) + } + return dst +} + +func mergeBytesListValue(dst, src pref.Value, opts mergeOptions) pref.Value { + dstl := dst.List() + srcl := src.List() + for i, llen := 0, srcl.Len(); i < llen; i++ { + sb := srcl.Get(i).Bytes() + db := append(emptyBuf[:], sb...) + dstl.Append(pref.ValueOfBytes(db)) + } + return dst +} + +func mergeMessageListValue(dst, src pref.Value, opts mergeOptions) pref.Value { + dstl := dst.List() + srcl := src.List() + for i, llen := 0, srcl.Len(); i < llen; i++ { + sm := srcl.Get(i).Message() + dm := proto.Clone(sm.Interface()).ProtoReflect() + dstl.Append(pref.ValueOfMessage(dm)) + } + return dst +} + +func mergeMessageValue(dst, src pref.Value, opts mergeOptions) pref.Value { + opts.Merge(dst.Message().Interface(), src.Message().Interface()) + return dst +} + +func mergeMessage(dst, src pointer, f *coderFieldInfo, opts mergeOptions) { + if f.mi != nil { + if dst.Elem().IsNil() { + dst.SetPointer(pointerOfValue(reflect.New(f.mi.GoReflectType.Elem()))) + } + f.mi.mergePointer(dst.Elem(), src.Elem(), opts) + } else { + dm := dst.AsValueOf(f.ft).Elem() + sm := src.AsValueOf(f.ft).Elem() + if dm.IsNil() { + dm.Set(reflect.New(f.ft.Elem())) + } + opts.Merge(asMessage(dm), asMessage(sm)) + } +} + +func mergeMessageSlice(dst, src pointer, f *coderFieldInfo, opts mergeOptions) { + for _, sp := range src.PointerSlice() { + dm := reflect.New(f.ft.Elem().Elem()) + if f.mi != nil { + f.mi.mergePointer(pointerOfValue(dm), sp, opts) + } else { + opts.Merge(asMessage(dm), asMessage(sp.AsValueOf(f.ft.Elem().Elem()))) + } + dst.AppendPointerSlice(pointerOfValue(dm)) + } +} + +func mergeBytes(dst, src pointer, _ *coderFieldInfo, _ mergeOptions) { + *dst.Bytes() = append(emptyBuf[:], *src.Bytes()...) +} + +func mergeBytesNoZero(dst, src pointer, _ *coderFieldInfo, _ mergeOptions) { + v := *src.Bytes() + if len(v) > 0 { + *dst.Bytes() = append(emptyBuf[:], v...) + } +} + +func mergeBytesSlice(dst, src pointer, _ *coderFieldInfo, _ mergeOptions) { + ds := dst.BytesSlice() + for _, v := range *src.BytesSlice() { + *ds = append(*ds, append(emptyBuf[:], v...)) + } +} |