88 lines
3.7 KiB
Go
88 lines
3.7 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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var defaultOverwriteDuplicatedInlinedFields = true
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// StructCodecOptions represents all possible options for struct encoding and decoding.
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type StructCodecOptions struct {
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DecodeZeroStruct *bool // Specifies if structs should be zeroed before decoding into them. Defaults to false.
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DecodeDeepZeroInline *bool // Specifies if structs should be recursively zeroed when a inline value is decoded. Defaults to false.
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EncodeOmitDefaultStruct *bool // Specifies if default structs should be considered empty by omitempty. Defaults to false.
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AllowUnexportedFields *bool // Specifies if unexported fields should be marshaled/unmarshaled. Defaults to false.
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OverwriteDuplicatedInlinedFields *bool // Specifies if fields in inlined structs can be overwritten by higher level struct fields with the same key. Defaults to true.
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}
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// StructCodec creates a new *StructCodecOptions
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func StructCodec() *StructCodecOptions {
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return &StructCodecOptions{}
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}
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// SetDecodeZeroStruct specifies if structs should be zeroed before decoding into them. Defaults to false.
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func (t *StructCodecOptions) SetDecodeZeroStruct(b bool) *StructCodecOptions {
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t.DecodeZeroStruct = &b
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return t
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}
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// SetDecodeDeepZeroInline specifies if structs should be zeroed before decoding into them. Defaults to false.
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func (t *StructCodecOptions) SetDecodeDeepZeroInline(b bool) *StructCodecOptions {
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t.DecodeDeepZeroInline = &b
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return t
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}
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// SetEncodeOmitDefaultStruct specifies if default structs should be considered empty by omitempty. A default struct has all
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// its values set to their default value. Defaults to false.
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func (t *StructCodecOptions) SetEncodeOmitDefaultStruct(b bool) *StructCodecOptions {
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t.EncodeOmitDefaultStruct = &b
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return t
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}
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// SetOverwriteDuplicatedInlinedFields specifies if inlined struct fields can be overwritten by higher level struct fields with the
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// same bson key. When true and decoding, values will be written to the outermost struct with a matching key, and when
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// encoding, keys will have the value of the top-most matching field. When false, decoding and encoding will error if
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// there are duplicate keys after the struct is inlined. Defaults to true.
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func (t *StructCodecOptions) SetOverwriteDuplicatedInlinedFields(b bool) *StructCodecOptions {
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t.OverwriteDuplicatedInlinedFields = &b
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return t
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}
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// SetAllowUnexportedFields specifies if unexported fields should be marshaled/unmarshaled. Defaults to false.
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func (t *StructCodecOptions) SetAllowUnexportedFields(b bool) *StructCodecOptions {
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t.AllowUnexportedFields = &b
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return t
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}
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// MergeStructCodecOptions combines the given *StructCodecOptions into a single *StructCodecOptions in a last one wins fashion.
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func MergeStructCodecOptions(opts ...*StructCodecOptions) *StructCodecOptions {
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s := &StructCodecOptions{
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OverwriteDuplicatedInlinedFields: &defaultOverwriteDuplicatedInlinedFields,
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}
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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.DecodeZeroStruct != nil {
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s.DecodeZeroStruct = opt.DecodeZeroStruct
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}
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if opt.DecodeDeepZeroInline != nil {
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s.DecodeDeepZeroInline = opt.DecodeDeepZeroInline
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}
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if opt.EncodeOmitDefaultStruct != nil {
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s.EncodeOmitDefaultStruct = opt.EncodeOmitDefaultStruct
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}
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if opt.OverwriteDuplicatedInlinedFields != nil {
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s.OverwriteDuplicatedInlinedFields = opt.OverwriteDuplicatedInlinedFields
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}
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if opt.AllowUnexportedFields != nil {
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s.AllowUnexportedFields = opt.AllowUnexportedFields
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}
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}
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return s
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}
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