68 lines
2.9 KiB
Go
68 lines
2.9 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 bsonoptions
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// MapCodecOptions represents all possible options for map encoding and decoding.
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type MapCodecOptions struct {
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DecodeZerosMap *bool // Specifies if the map should be zeroed before decoding into it. Defaults to false.
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EncodeNilAsEmpty *bool // Specifies if a nil map should encode as an empty document instead of null. Defaults to false.
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// Specifies how keys should be handled. If false, the behavior matches encoding/json, where the encoding key type must
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// either be a string, an integer type, or implement bsoncodec.KeyMarshaler and the decoding key type must either be a
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// string, an integer type, or implement bsoncodec.KeyUnmarshaler. If true, keys are encoded with fmt.Sprint() and the
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// encoding key type must be a string, an integer type, or a float. If true, the use of Stringer will override
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// TextMarshaler/TextUnmarshaler. Defaults to false.
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EncodeKeysWithStringer *bool
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}
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// MapCodec creates a new *MapCodecOptions
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func MapCodec() *MapCodecOptions {
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return &MapCodecOptions{}
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}
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// SetDecodeZerosMap specifies if the map should be zeroed before decoding into it. Defaults to false.
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func (t *MapCodecOptions) SetDecodeZerosMap(b bool) *MapCodecOptions {
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t.DecodeZerosMap = &b
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return t
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}
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// SetEncodeNilAsEmpty specifies if a nil map should encode as an empty document instead of null. Defaults to false.
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func (t *MapCodecOptions) SetEncodeNilAsEmpty(b bool) *MapCodecOptions {
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t.EncodeNilAsEmpty = &b
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return t
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}
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// SetEncodeKeysWithStringer specifies how keys should be handled. If false, the behavior matches encoding/json, where the
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// encoding key type must either be a string, an integer type, or implement bsoncodec.KeyMarshaler and the decoding key
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// type must either be a string, an integer type, or implement bsoncodec.KeyUnmarshaler. If true, keys are encoded with
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// fmt.Sprint() and the encoding key type must be a string, an integer type, or a float. If true, the use of Stringer
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// will override TextMarshaler/TextUnmarshaler. Defaults to false.
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func (t *MapCodecOptions) SetEncodeKeysWithStringer(b bool) *MapCodecOptions {
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t.EncodeKeysWithStringer = &b
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return t
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}
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// MergeMapCodecOptions combines the given *MapCodecOptions into a single *MapCodecOptions in a last one wins fashion.
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func MergeMapCodecOptions(opts ...*MapCodecOptions) *MapCodecOptions {
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s := MapCodec()
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for _, opt := range opts {
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if opt == nil {
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continue
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}
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if opt.DecodeZerosMap != nil {
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s.DecodeZerosMap = opt.DecodeZerosMap
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}
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if opt.EncodeNilAsEmpty != nil {
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s.EncodeNilAsEmpty = opt.EncodeNilAsEmpty
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}
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if opt.EncodeKeysWithStringer != nil {
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s.EncodeKeysWithStringer = opt.EncodeKeysWithStringer
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}
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}
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return s
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}
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