diff options
Diffstat (limited to 'vendor/github.com/golang/protobuf/proto/wire.go')
-rw-r--r-- | vendor/github.com/golang/protobuf/proto/wire.go | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/vendor/github.com/golang/protobuf/proto/wire.go b/vendor/github.com/golang/protobuf/proto/wire.go new file mode 100644 index 000000000..d7c28da5a --- /dev/null +++ b/vendor/github.com/golang/protobuf/proto/wire.go @@ -0,0 +1,78 @@ +// Copyright 2019 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 proto + +import ( + protoV2 "google.golang.org/protobuf/proto" + "google.golang.org/protobuf/runtime/protoiface" +) + +// Size returns the size in bytes of the wire-format encoding of m. +func Size(m Message) int { + if m == nil { + return 0 + } + mi := MessageV2(m) + return protoV2.Size(mi) +} + +// Marshal returns the wire-format encoding of m. +func Marshal(m Message) ([]byte, error) { + b, err := marshalAppend(nil, m, false) + if b == nil { + b = zeroBytes + } + return b, err +} + +var zeroBytes = make([]byte, 0, 0) + +func marshalAppend(buf []byte, m Message, deterministic bool) ([]byte, error) { + if m == nil { + return nil, ErrNil + } + mi := MessageV2(m) + nbuf, err := protoV2.MarshalOptions{ + Deterministic: deterministic, + AllowPartial: true, + }.MarshalAppend(buf, mi) + if err != nil { + return buf, err + } + if len(buf) == len(nbuf) { + if !mi.ProtoReflect().IsValid() { + return buf, ErrNil + } + } + return nbuf, checkRequiredNotSet(mi) +} + +// Unmarshal parses a wire-format message in b and places the decoded results in m. +// +// Unmarshal resets m before starting to unmarshal, so any existing data in m is always +// removed. Use UnmarshalMerge to preserve and append to existing data. +func Unmarshal(b []byte, m Message) error { + m.Reset() + return UnmarshalMerge(b, m) +} + +// UnmarshalMerge parses a wire-format message in b and places the decoded results in m. +func UnmarshalMerge(b []byte, m Message) error { + mi := MessageV2(m) + out, err := protoV2.UnmarshalOptions{ + AllowPartial: true, + Merge: true, + }.UnmarshalState(protoiface.UnmarshalInput{ + Buf: b, + Message: mi.ProtoReflect(), + }) + if err != nil { + return err + } + if out.Flags&protoiface.UnmarshalInitialized > 0 { + return nil + } + return checkRequiredNotSet(mi) +} |