diff options
Diffstat (limited to 'vendor/go.mongodb.org/mongo-driver/bson/bsoncodec/pointer_codec.go')
-rw-r--r-- | vendor/go.mongodb.org/mongo-driver/bson/bsoncodec/pointer_codec.go | 108 |
1 files changed, 0 insertions, 108 deletions
diff --git a/vendor/go.mongodb.org/mongo-driver/bson/bsoncodec/pointer_codec.go b/vendor/go.mongodb.org/mongo-driver/bson/bsoncodec/pointer_codec.go deleted file mode 100644 index ddfa4a33e..000000000 --- a/vendor/go.mongodb.org/mongo-driver/bson/bsoncodec/pointer_codec.go +++ /dev/null @@ -1,108 +0,0 @@ -// 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" - - "go.mongodb.org/mongo-driver/bson/bsonrw" - "go.mongodb.org/mongo-driver/bson/bsontype" -) - -var _ ValueEncoder = &PointerCodec{} -var _ ValueDecoder = &PointerCodec{} - -// PointerCodec is the Codec used for pointers. -// -// Deprecated: PointerCodec will not be directly accessible in Go Driver 2.0. To -// override the default pointer encode and decode behavior, create a new registry -// with [go.mongodb.org/mongo-driver/bson.NewRegistry] and register a new -// encoder and decoder for pointers. -// -// For example, -// -// reg := bson.NewRegistry() -// reg.RegisterKindEncoder(reflect.Ptr, myPointerEncoder) -// reg.RegisterKindDecoder(reflect.Ptr, myPointerDecoder) -type PointerCodec struct { - ecache typeEncoderCache - dcache typeDecoderCache -} - -// NewPointerCodec returns a PointerCodec that has been initialized. -// -// Deprecated: NewPointerCodec will not be available in Go Driver 2.0. See -// [PointerCodec] for more details. -func NewPointerCodec() *PointerCodec { - return &PointerCodec{} -} - -// 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() - } - - typ := val.Type() - if v, ok := pc.ecache.Load(typ); ok { - if v == nil { - return ErrNoEncoder{Type: typ} - } - return v.EncodeValue(ec, vw, val.Elem()) - } - // TODO(charlie): handle concurrent requests for the same type - enc, err := ec.LookupEncoder(typ.Elem()) - enc = pc.ecache.LoadOrStore(typ, enc) - 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} - } - - typ := val.Type() - if vr.Type() == bsontype.Null { - val.Set(reflect.Zero(typ)) - return vr.ReadNull() - } - if vr.Type() == bsontype.Undefined { - val.Set(reflect.Zero(typ)) - return vr.ReadUndefined() - } - - if val.IsNil() { - val.Set(reflect.New(typ.Elem())) - } - - if v, ok := pc.dcache.Load(typ); ok { - if v == nil { - return ErrNoDecoder{Type: typ} - } - return v.DecodeValue(dc, vr, val.Elem()) - } - // TODO(charlie): handle concurrent requests for the same type - dec, err := dc.LookupDecoder(typ.Elem()) - dec = pc.dcache.LoadOrStore(typ, dec) - if err != nil { - return err - } - return dec.DecodeValue(dc, vr, val.Elem()) -} |