seba-365 - implemented dep
Change-Id: Ia6226d50e7615935a0c8876809a687427ff88c22
diff --git a/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/pointer_codec.go b/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/pointer_codec.go
new file mode 100644
index 0000000..b78ec0a
--- /dev/null
+++ b/vendor/github.com/mongodb/mongo-go-driver/bson/bsoncodec/pointer_codec.go
@@ -0,0 +1,110 @@
+// 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 bsoncodec
+
+import (
+ "reflect"
+ "sync"
+
+ "github.com/mongodb/mongo-go-driver/bson/bsonrw"
+ "github.com/mongodb/mongo-go-driver/bson/bsontype"
+)
+
+var defaultPointerCodec = &PointerCodec{
+ ecache: make(map[reflect.Type]ValueEncoder),
+ dcache: make(map[reflect.Type]ValueDecoder),
+}
+
+var _ ValueEncoder = &PointerCodec{}
+var _ ValueDecoder = &PointerCodec{}
+
+// PointerCodec is the Codec used for pointers.
+type PointerCodec struct {
+ ecache map[reflect.Type]ValueEncoder
+ dcache map[reflect.Type]ValueDecoder
+ l sync.RWMutex
+}
+
+// NewPointerCodec returns a PointerCodec that has been initialized.
+func NewPointerCodec() *PointerCodec {
+ return &PointerCodec{
+ ecache: make(map[reflect.Type]ValueEncoder),
+ dcache: make(map[reflect.Type]ValueDecoder),
+ }
+}
+
+// EncodeValue handles encoding a pointer by either encoding it to BSON Null if the pointer is nil
+// or looking up an encoder for the type of value the pointer points to.
+func (pc *PointerCodec) EncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
+ if val.Kind() != reflect.Ptr {
+ if !val.IsValid() {
+ return vw.WriteNull()
+ }
+ return ValueEncoderError{Name: "PointerCodec.EncodeValue", Kinds: []reflect.Kind{reflect.Ptr}, Received: val}
+ }
+
+ if val.IsNil() {
+ return vw.WriteNull()
+ }
+
+ pc.l.RLock()
+ enc, ok := pc.ecache[val.Type()]
+ pc.l.RUnlock()
+ if ok {
+ if enc == nil {
+ return ErrNoEncoder{Type: val.Type()}
+ }
+ return enc.EncodeValue(ec, vw, val.Elem())
+ }
+
+ enc, err := ec.LookupEncoder(val.Type().Elem())
+ pc.l.Lock()
+ pc.ecache[val.Type()] = enc
+ pc.l.Unlock()
+ if err != nil {
+ return err
+ }
+
+ return enc.EncodeValue(ec, vw, val.Elem())
+}
+
+// DecodeValue handles decoding a pointer by looking up a decoder for the type it points to and
+// using that to decode. If the BSON value is Null, this method will set the pointer to nil.
+func (pc *PointerCodec) DecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
+ if !val.CanSet() || val.Kind() != reflect.Ptr {
+ return ValueDecoderError{Name: "PointerCodec.DecodeValue", Kinds: []reflect.Kind{reflect.Ptr}, Received: val}
+ }
+
+ if vr.Type() == bsontype.Null {
+ val.Set(reflect.Zero(val.Type()))
+ return vr.ReadNull()
+ }
+
+ if val.IsNil() {
+ val.Set(reflect.New(val.Type().Elem()))
+ }
+
+ pc.l.RLock()
+ dec, ok := pc.dcache[val.Type()]
+ pc.l.RUnlock()
+ if ok {
+ if dec == nil {
+ return ErrNoDecoder{Type: val.Type()}
+ }
+ return dec.DecodeValue(dc, vr, val.Elem())
+ }
+
+ dec, err := dc.LookupDecoder(val.Type().Elem())
+ pc.l.Lock()
+ pc.dcache[val.Type()] = dec
+ pc.l.Unlock()
+ if err != nil {
+ return err
+ }
+
+ return dec.DecodeValue(dc, vr, val.Elem())
+}