123 lines
4.2 KiB
Go
123 lines
4.2 KiB
Go
// Copyright (C) MongoDB, Inc. 2017-present.
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may
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// not use this file except in compliance with the License. You may obtain
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// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
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package bson
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import (
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"errors"
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"fmt"
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"reflect"
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"go.mongodb.org/mongo-driver/bson/bsoncodec"
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"go.mongodb.org/mongo-driver/bson/bsonrw"
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)
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var tRawValue = reflect.TypeOf(RawValue{})
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var tRaw = reflect.TypeOf(Raw(nil))
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var primitiveCodecs PrimitiveCodecs
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// PrimitiveCodecs is a namespace for all of the default bsoncodec.Codecs for the primitive types
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// defined in this package.
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//
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// Deprecated: Use bson.NewRegistry to get a registry with all primitive encoders and decoders
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// registered.
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type PrimitiveCodecs struct{}
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// RegisterPrimitiveCodecs will register the encode and decode methods attached to PrimitiveCodecs
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// with the provided RegistryBuilder. if rb is nil, a new empty RegistryBuilder will be created.
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//
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// Deprecated: Use bson.NewRegistry to get a registry with all primitive encoders and decoders
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// registered.
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func (pc PrimitiveCodecs) RegisterPrimitiveCodecs(rb *bsoncodec.RegistryBuilder) {
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if rb == nil {
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panic(errors.New("argument to RegisterPrimitiveCodecs must not be nil"))
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}
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rb.
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RegisterTypeEncoder(tRawValue, bsoncodec.ValueEncoderFunc(pc.RawValueEncodeValue)).
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RegisterTypeEncoder(tRaw, bsoncodec.ValueEncoderFunc(pc.RawEncodeValue)).
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RegisterTypeDecoder(tRawValue, bsoncodec.ValueDecoderFunc(pc.RawValueDecodeValue)).
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RegisterTypeDecoder(tRaw, bsoncodec.ValueDecoderFunc(pc.RawDecodeValue))
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}
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// RawValueEncodeValue is the ValueEncoderFunc for RawValue.
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//
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// If the RawValue's Type is "invalid" and the RawValue's Value is not empty or
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// nil, then this method will return an error.
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//
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// Deprecated: Use bson.NewRegistry to get a registry with all primitive
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// encoders and decoders registered.
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func (PrimitiveCodecs) RawValueEncodeValue(_ bsoncodec.EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
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if !val.IsValid() || val.Type() != tRawValue {
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return bsoncodec.ValueEncoderError{
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Name: "RawValueEncodeValue",
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Types: []reflect.Type{tRawValue},
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Received: val,
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}
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}
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rawvalue := val.Interface().(RawValue)
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if !rawvalue.Type.IsValid() {
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return fmt.Errorf("the RawValue Type specifies an invalid BSON type: %#x", byte(rawvalue.Type))
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}
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return bsonrw.Copier{}.CopyValueFromBytes(vw, rawvalue.Type, rawvalue.Value)
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}
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// RawValueDecodeValue is the ValueDecoderFunc for RawValue.
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//
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// Deprecated: Use bson.NewRegistry to get a registry with all primitive encoders and decoders
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// registered.
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func (PrimitiveCodecs) RawValueDecodeValue(_ bsoncodec.DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
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if !val.CanSet() || val.Type() != tRawValue {
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return bsoncodec.ValueDecoderError{Name: "RawValueDecodeValue", Types: []reflect.Type{tRawValue}, Received: val}
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}
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t, value, err := bsonrw.Copier{}.CopyValueToBytes(vr)
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if err != nil {
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return err
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}
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val.Set(reflect.ValueOf(RawValue{Type: t, Value: value}))
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return nil
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}
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// RawEncodeValue is the ValueEncoderFunc for Reader.
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//
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// Deprecated: Use bson.NewRegistry to get a registry with all primitive encoders and decoders
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// registered.
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func (PrimitiveCodecs) RawEncodeValue(_ bsoncodec.EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
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if !val.IsValid() || val.Type() != tRaw {
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return bsoncodec.ValueEncoderError{Name: "RawEncodeValue", Types: []reflect.Type{tRaw}, Received: val}
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}
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rdr := val.Interface().(Raw)
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return bsonrw.Copier{}.CopyDocumentFromBytes(vw, rdr)
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}
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// RawDecodeValue is the ValueDecoderFunc for Reader.
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//
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// Deprecated: Use bson.NewRegistry to get a registry with all primitive encoders and decoders
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// registered.
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func (PrimitiveCodecs) RawDecodeValue(_ bsoncodec.DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
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if !val.CanSet() || val.Type() != tRaw {
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return bsoncodec.ValueDecoderError{Name: "RawDecodeValue", Types: []reflect.Type{tRaw}, Received: val}
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}
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if val.IsNil() {
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val.Set(reflect.MakeSlice(val.Type(), 0, 0))
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}
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val.SetLen(0)
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rdr, err := bsonrw.Copier{}.AppendDocumentBytes(val.Interface().(Raw), vr)
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val.Set(reflect.ValueOf(rdr))
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return err
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}
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