51 lines
1.5 KiB
Go
51 lines
1.5 KiB
Go
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// 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 bsoncodec
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import (
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"reflect"
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"go.mongodb.org/mongo-driver/bson/bsonrw"
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"go.mongodb.org/mongo-driver/x/bsonx/bsoncore"
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)
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// ArrayCodec is the Codec used for bsoncore.Array values.
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type ArrayCodec struct{}
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var defaultArrayCodec = NewArrayCodec()
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// NewArrayCodec returns an ArrayCodec.
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func NewArrayCodec() *ArrayCodec {
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return &ArrayCodec{}
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}
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// EncodeValue is the ValueEncoder for bsoncore.Array values.
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func (ac *ArrayCodec) EncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
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if !val.IsValid() || val.Type() != tCoreArray {
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return ValueEncoderError{Name: "CoreArrayEncodeValue", Types: []reflect.Type{tCoreArray}, Received: val}
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}
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arr := val.Interface().(bsoncore.Array)
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return bsonrw.Copier{}.CopyArrayFromBytes(vw, arr)
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}
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// DecodeValue is the ValueDecoder for bsoncore.Array values.
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func (ac *ArrayCodec) DecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
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if !val.CanSet() || val.Type() != tCoreArray {
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return ValueDecoderError{Name: "CoreArrayDecodeValue", Types: []reflect.Type{tCoreArray}, 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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arr, err := bsonrw.Copier{}.AppendArrayBytes(val.Interface().(bsoncore.Array), vr)
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val.Set(reflect.ValueOf(arr))
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return err
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}
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