seba-365 - implemented dep
Change-Id: Ia6226d50e7615935a0c8876809a687427ff88c22
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/decoder.go b/vendor/github.com/mongodb/mongo-go-driver/bson/decoder.go
new file mode 100644
index 0000000..03c86a1
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/decoder.go
@@ -0,0 +1,106 @@
+// Copyright (C) MongoDB, Inc. 2017-present.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may
+// not use this file except in compliance with the License. You may obtain
+// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
+
+package bson
+
+import (
+ "errors"
+ "fmt"
+ "reflect"
+ "sync"
+
+ "github.com/mongodb/mongo-go-driver/bson/bsoncodec"
+ "github.com/mongodb/mongo-go-driver/bson/bsonrw"
+)
+
+// This pool is used to keep the allocations of Decoders down. This is only used for the Marshal*
+// methods and is not consumable from outside of this package. The Decoders retrieved from this pool
+// must have both Reset and SetRegistry called on them.
+var decPool = sync.Pool{
+ New: func() interface{} {
+ return new(Decoder)
+ },
+}
+
+// A Decoder reads and decodes BSON documents from a stream. It reads from a bsonrw.ValueReader as
+// the source of BSON data.
+type Decoder struct {
+ dc bsoncodec.DecodeContext
+ vr bsonrw.ValueReader
+}
+
+// NewDecoder returns a new decoder that uses the DefaultRegistry to read from vr.
+func NewDecoder(vr bsonrw.ValueReader) (*Decoder, error) {
+ if vr == nil {
+ return nil, errors.New("cannot create a new Decoder with a nil ValueReader")
+ }
+
+ return &Decoder{
+ dc: bsoncodec.DecodeContext{Registry: DefaultRegistry},
+ vr: vr,
+ }, nil
+}
+
+// NewDecoderWithContext returns a new decoder that uses DecodeContext dc to read from vr.
+func NewDecoderWithContext(dc bsoncodec.DecodeContext, vr bsonrw.ValueReader) (*Decoder, error) {
+ if dc.Registry == nil {
+ dc.Registry = DefaultRegistry
+ }
+ if vr == nil {
+ return nil, errors.New("cannot create a new Decoder with a nil ValueReader")
+ }
+
+ return &Decoder{
+ dc: dc,
+ vr: vr,
+ }, nil
+}
+
+// Decode reads the next BSON document from the stream and decodes it into the
+// value pointed to by val.
+//
+// The documentation for Unmarshal contains details about of BSON into a Go
+// value.
+func (d *Decoder) Decode(val interface{}) error {
+ if unmarshaler, ok := val.(Unmarshaler); ok {
+ // TODO(skriptble): Reuse a []byte here and use the AppendDocumentBytes method.
+ buf, err := bsonrw.Copier{}.CopyDocumentToBytes(d.vr)
+ if err != nil {
+ return err
+ }
+ return unmarshaler.UnmarshalBSON(buf)
+ }
+
+ rval := reflect.ValueOf(val)
+ if rval.Kind() != reflect.Ptr {
+ return fmt.Errorf("argument to Decode must be a pointer to a type, but got %v", rval)
+ }
+ rval = rval.Elem()
+ decoder, err := d.dc.LookupDecoder(rval.Type())
+ if err != nil {
+ return err
+ }
+ return decoder.DecodeValue(d.dc, d.vr, rval)
+}
+
+// Reset will reset the state of the decoder, using the same *DecodeContext used in
+// the original construction but using vr for reading.
+func (d *Decoder) Reset(vr bsonrw.ValueReader) error {
+ d.vr = vr
+ return nil
+}
+
+// SetRegistry replaces the current registry of the decoder with r.
+func (d *Decoder) SetRegistry(r *bsoncodec.Registry) error {
+ d.dc.Registry = r
+ return nil
+}
+
+// SetContext replaces the current registry of the decoder with dc.
+func (d *Decoder) SetContext(dc bsoncodec.DecodeContext) error {
+ d.dc = dc
+ return nil
+}