* update github.com/blevesearch/bleve v2.0.2 -> v2.0.3 * github.com/denisenkom/go-mssqldb v0.9.0 -> v0.10.0 * github.com/editorconfig/editorconfig-core-go v2.4.1 -> v2.4.2 * github.com/go-chi/cors v1.1.1 -> v1.2.0 * github.com/go-git/go-billy v5.0.0 -> v5.1.0 * github.com/go-git/go-git v5.2.0 -> v5.3.0 * github.com/go-ldap/ldap v3.2.4 -> v3.3.0 * github.com/go-redis/redis v8.6.0 -> v8.8.2 * github.com/go-sql-driver/mysql v1.5.0 -> v1.6.0 * github.com/go-swagger/go-swagger v0.26.1 -> v0.27.0 * github.com/lib/pq v1.9.0 -> v1.10.1 * github.com/mattn/go-sqlite3 v1.14.6 -> v1.14.7 * github.com/go-testfixtures/testfixtures v3.5.0 -> v3.6.0 * github.com/issue9/identicon v1.0.1 -> v1.2.0 * github.com/klauspost/compress v1.11.8 -> v1.12.1 * github.com/mgechev/revive v1.0.3 -> v1.0.6 * github.com/microcosm-cc/bluemonday v1.0.7 -> v1.0.8 * github.com/niklasfasching/go-org v1.4.0 -> v1.5.0 * github.com/olivere/elastic v7.0.22 -> v7.0.24 * github.com/pelletier/go-toml v1.8.1 -> v1.9.0 * github.com/prometheus/client_golang v1.9.0 -> v1.10.0 * github.com/xanzy/go-gitlab v0.44.0 -> v0.48.0 * github.com/yuin/goldmark v1.3.3 -> v1.3.5 * github.com/6543/go-version v1.2.4 -> v1.3.1 * do github.com/lib/pq v1.10.0 -> v1.10.1 again ...
140 lines
4.1 KiB
Go
Vendored
140 lines
4.1 KiB
Go
Vendored
// 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/bsonoptions"
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"go.mongodb.org/mongo-driver/bson/bsonrw"
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"go.mongodb.org/mongo-driver/bson/bsontype"
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"go.mongodb.org/mongo-driver/bson/primitive"
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)
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// EmptyInterfaceCodec is the Codec used for interface{} values.
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type EmptyInterfaceCodec struct {
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DecodeBinaryAsSlice bool
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}
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var (
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defaultEmptyInterfaceCodec = NewEmptyInterfaceCodec()
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_ ValueCodec = defaultEmptyInterfaceCodec
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_ typeDecoder = defaultEmptyInterfaceCodec
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)
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// NewEmptyInterfaceCodec returns a EmptyInterfaceCodec with options opts.
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func NewEmptyInterfaceCodec(opts ...*bsonoptions.EmptyInterfaceCodecOptions) *EmptyInterfaceCodec {
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interfaceOpt := bsonoptions.MergeEmptyInterfaceCodecOptions(opts...)
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codec := EmptyInterfaceCodec{}
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if interfaceOpt.DecodeBinaryAsSlice != nil {
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codec.DecodeBinaryAsSlice = *interfaceOpt.DecodeBinaryAsSlice
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}
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return &codec
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}
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// EncodeValue is the ValueEncoderFunc for interface{}.
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func (eic EmptyInterfaceCodec) EncodeValue(ec EncodeContext, vw bsonrw.ValueWriter, val reflect.Value) error {
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if !val.IsValid() || val.Type() != tEmpty {
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return ValueEncoderError{Name: "EmptyInterfaceEncodeValue", Types: []reflect.Type{tEmpty}, Received: val}
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}
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if val.IsNil() {
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return vw.WriteNull()
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}
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encoder, err := ec.LookupEncoder(val.Elem().Type())
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if err != nil {
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return err
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}
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return encoder.EncodeValue(ec, vw, val.Elem())
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}
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func (eic EmptyInterfaceCodec) getEmptyInterfaceDecodeType(dc DecodeContext, valueType bsontype.Type) (reflect.Type, error) {
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isDocument := valueType == bsontype.Type(0) || valueType == bsontype.EmbeddedDocument
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if isDocument && dc.Ancestor != nil {
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// Using ancestor information rather than looking up the type map entry forces consistent decoding.
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// If we're decoding into a bson.D, subdocuments should also be decoded as bson.D, even if a type map entry
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// has been registered.
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return dc.Ancestor, nil
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}
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rtype, err := dc.LookupTypeMapEntry(valueType)
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if err == nil {
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return rtype, nil
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}
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if isDocument {
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// For documents, fallback to looking up a type map entry for bsontype.Type(0) or bsontype.EmbeddedDocument,
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// depending on the original valueType.
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var lookupType bsontype.Type
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switch valueType {
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case bsontype.Type(0):
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lookupType = bsontype.EmbeddedDocument
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case bsontype.EmbeddedDocument:
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lookupType = bsontype.Type(0)
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}
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rtype, err = dc.LookupTypeMapEntry(lookupType)
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if err == nil {
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return rtype, nil
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}
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}
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return nil, err
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}
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func (eic EmptyInterfaceCodec) decodeType(dc DecodeContext, vr bsonrw.ValueReader, t reflect.Type) (reflect.Value, error) {
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if t != tEmpty {
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return emptyValue, ValueDecoderError{Name: "EmptyInterfaceDecodeValue", Types: []reflect.Type{tEmpty}, Received: reflect.Zero(t)}
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}
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rtype, err := eic.getEmptyInterfaceDecodeType(dc, vr.Type())
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if err != nil {
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switch vr.Type() {
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case bsontype.Null:
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return reflect.Zero(t), vr.ReadNull()
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default:
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return emptyValue, err
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}
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}
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decoder, err := dc.LookupDecoder(rtype)
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if err != nil {
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return emptyValue, err
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}
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elem, err := decodeTypeOrValue(decoder, dc, vr, rtype)
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if err != nil {
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return emptyValue, err
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}
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if eic.DecodeBinaryAsSlice && rtype == tBinary {
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binElem := elem.Interface().(primitive.Binary)
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if binElem.Subtype == bsontype.BinaryGeneric || binElem.Subtype == bsontype.BinaryBinaryOld {
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elem = reflect.ValueOf(binElem.Data)
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}
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}
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return elem, nil
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}
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// DecodeValue is the ValueDecoderFunc for interface{}.
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func (eic EmptyInterfaceCodec) DecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
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if !val.CanSet() || val.Type() != tEmpty {
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return ValueDecoderError{Name: "EmptyInterfaceDecodeValue", Types: []reflect.Type{tEmpty}, Received: val}
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}
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elem, err := eic.decodeType(dc, vr, val.Type())
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if err != nil {
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return err
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}
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val.Set(elem)
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return nil
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}
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