1808 lines
53 KiB
Go
1808 lines
53 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 bsoncodec
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import (
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"encoding/json"
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"errors"
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"fmt"
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"math"
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"net/url"
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"reflect"
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"strconv"
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"time"
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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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"go.mongodb.org/mongo-driver/x/bsonx/bsoncore"
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)
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var (
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defaultValueDecoders DefaultValueDecoders
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errCannotTruncate = errors.New("float64 can only be truncated to a lower precision type when truncation is enabled")
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)
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type decodeBinaryError struct {
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subtype byte
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typeName string
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}
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func (d decodeBinaryError) Error() string {
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return fmt.Sprintf("only binary values with subtype 0x00 or 0x02 can be decoded into %s, but got subtype %v", d.typeName, d.subtype)
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}
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func newDefaultStructCodec() *StructCodec {
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codec, err := NewStructCodec(DefaultStructTagParser)
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if err != nil {
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// This function is called from the codec registration path, so errors can't be propagated. If there's an error
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// constructing the StructCodec, we panic to avoid losing it.
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panic(fmt.Errorf("error creating default StructCodec: %w", err))
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}
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return codec
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}
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// DefaultValueDecoders is a namespace type for the default ValueDecoders used
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// when creating a registry.
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//
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// Deprecated: Use [go.mongodb.org/mongo-driver/bson.NewRegistry] to get a registry with all default
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// value decoders registered.
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type DefaultValueDecoders struct{}
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// RegisterDefaultDecoders will register the decoder methods attached to DefaultValueDecoders with
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// the provided RegistryBuilder.
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//
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// There is no support for decoding map[string]interface{} because there is no decoder for
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// interface{}, so users must either register this decoder themselves or use the
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// EmptyInterfaceDecoder available in the bson package.
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//
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// Deprecated: Use [go.mongodb.org/mongo-driver/bson.NewRegistry] to get a registry with all default
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// value decoders registered.
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func (dvd DefaultValueDecoders) RegisterDefaultDecoders(rb *RegistryBuilder) {
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if rb == nil {
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panic(errors.New("argument to RegisterDefaultDecoders must not be nil"))
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}
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intDecoder := decodeAdapter{dvd.IntDecodeValue, dvd.intDecodeType}
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floatDecoder := decodeAdapter{dvd.FloatDecodeValue, dvd.floatDecodeType}
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rb.
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RegisterTypeDecoder(tD, ValueDecoderFunc(dvd.DDecodeValue)).
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RegisterTypeDecoder(tBinary, decodeAdapter{dvd.BinaryDecodeValue, dvd.binaryDecodeType}).
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RegisterTypeDecoder(tUndefined, decodeAdapter{dvd.UndefinedDecodeValue, dvd.undefinedDecodeType}).
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RegisterTypeDecoder(tDateTime, decodeAdapter{dvd.DateTimeDecodeValue, dvd.dateTimeDecodeType}).
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RegisterTypeDecoder(tNull, decodeAdapter{dvd.NullDecodeValue, dvd.nullDecodeType}).
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RegisterTypeDecoder(tRegex, decodeAdapter{dvd.RegexDecodeValue, dvd.regexDecodeType}).
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RegisterTypeDecoder(tDBPointer, decodeAdapter{dvd.DBPointerDecodeValue, dvd.dBPointerDecodeType}).
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RegisterTypeDecoder(tTimestamp, decodeAdapter{dvd.TimestampDecodeValue, dvd.timestampDecodeType}).
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RegisterTypeDecoder(tMinKey, decodeAdapter{dvd.MinKeyDecodeValue, dvd.minKeyDecodeType}).
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RegisterTypeDecoder(tMaxKey, decodeAdapter{dvd.MaxKeyDecodeValue, dvd.maxKeyDecodeType}).
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RegisterTypeDecoder(tJavaScript, decodeAdapter{dvd.JavaScriptDecodeValue, dvd.javaScriptDecodeType}).
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RegisterTypeDecoder(tSymbol, decodeAdapter{dvd.SymbolDecodeValue, dvd.symbolDecodeType}).
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RegisterTypeDecoder(tByteSlice, defaultByteSliceCodec).
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RegisterTypeDecoder(tTime, defaultTimeCodec).
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RegisterTypeDecoder(tEmpty, defaultEmptyInterfaceCodec).
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RegisterTypeDecoder(tCoreArray, defaultArrayCodec).
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RegisterTypeDecoder(tOID, decodeAdapter{dvd.ObjectIDDecodeValue, dvd.objectIDDecodeType}).
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RegisterTypeDecoder(tDecimal, decodeAdapter{dvd.Decimal128DecodeValue, dvd.decimal128DecodeType}).
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RegisterTypeDecoder(tJSONNumber, decodeAdapter{dvd.JSONNumberDecodeValue, dvd.jsonNumberDecodeType}).
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RegisterTypeDecoder(tURL, decodeAdapter{dvd.URLDecodeValue, dvd.urlDecodeType}).
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RegisterTypeDecoder(tCoreDocument, ValueDecoderFunc(dvd.CoreDocumentDecodeValue)).
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RegisterTypeDecoder(tCodeWithScope, decodeAdapter{dvd.CodeWithScopeDecodeValue, dvd.codeWithScopeDecodeType}).
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RegisterDefaultDecoder(reflect.Bool, decodeAdapter{dvd.BooleanDecodeValue, dvd.booleanDecodeType}).
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RegisterDefaultDecoder(reflect.Int, intDecoder).
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RegisterDefaultDecoder(reflect.Int8, intDecoder).
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RegisterDefaultDecoder(reflect.Int16, intDecoder).
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RegisterDefaultDecoder(reflect.Int32, intDecoder).
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RegisterDefaultDecoder(reflect.Int64, intDecoder).
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RegisterDefaultDecoder(reflect.Uint, defaultUIntCodec).
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RegisterDefaultDecoder(reflect.Uint8, defaultUIntCodec).
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RegisterDefaultDecoder(reflect.Uint16, defaultUIntCodec).
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RegisterDefaultDecoder(reflect.Uint32, defaultUIntCodec).
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RegisterDefaultDecoder(reflect.Uint64, defaultUIntCodec).
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RegisterDefaultDecoder(reflect.Float32, floatDecoder).
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RegisterDefaultDecoder(reflect.Float64, floatDecoder).
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RegisterDefaultDecoder(reflect.Array, ValueDecoderFunc(dvd.ArrayDecodeValue)).
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RegisterDefaultDecoder(reflect.Map, defaultMapCodec).
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RegisterDefaultDecoder(reflect.Slice, defaultSliceCodec).
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RegisterDefaultDecoder(reflect.String, defaultStringCodec).
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RegisterDefaultDecoder(reflect.Struct, newDefaultStructCodec()).
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RegisterDefaultDecoder(reflect.Ptr, NewPointerCodec()).
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RegisterTypeMapEntry(bsontype.Double, tFloat64).
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RegisterTypeMapEntry(bsontype.String, tString).
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RegisterTypeMapEntry(bsontype.Array, tA).
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RegisterTypeMapEntry(bsontype.Binary, tBinary).
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RegisterTypeMapEntry(bsontype.Undefined, tUndefined).
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RegisterTypeMapEntry(bsontype.ObjectID, tOID).
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RegisterTypeMapEntry(bsontype.Boolean, tBool).
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RegisterTypeMapEntry(bsontype.DateTime, tDateTime).
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RegisterTypeMapEntry(bsontype.Regex, tRegex).
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RegisterTypeMapEntry(bsontype.DBPointer, tDBPointer).
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RegisterTypeMapEntry(bsontype.JavaScript, tJavaScript).
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RegisterTypeMapEntry(bsontype.Symbol, tSymbol).
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RegisterTypeMapEntry(bsontype.CodeWithScope, tCodeWithScope).
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RegisterTypeMapEntry(bsontype.Int32, tInt32).
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RegisterTypeMapEntry(bsontype.Int64, tInt64).
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RegisterTypeMapEntry(bsontype.Timestamp, tTimestamp).
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RegisterTypeMapEntry(bsontype.Decimal128, tDecimal).
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RegisterTypeMapEntry(bsontype.MinKey, tMinKey).
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RegisterTypeMapEntry(bsontype.MaxKey, tMaxKey).
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RegisterTypeMapEntry(bsontype.Type(0), tD).
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RegisterTypeMapEntry(bsontype.EmbeddedDocument, tD).
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RegisterHookDecoder(tValueUnmarshaler, ValueDecoderFunc(dvd.ValueUnmarshalerDecodeValue)).
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RegisterHookDecoder(tUnmarshaler, ValueDecoderFunc(dvd.UnmarshalerDecodeValue))
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}
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// DDecodeValue is the ValueDecoderFunc for primitive.D instances.
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//
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// Deprecated: Use [go.mongodb.org/mongo-driver/bson.NewRegistry] to get a registry with all default
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// value decoders registered.
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func (dvd DefaultValueDecoders) DDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
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if !val.IsValid() || !val.CanSet() || val.Type() != tD {
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return ValueDecoderError{Name: "DDecodeValue", Kinds: []reflect.Kind{reflect.Slice}, Received: val}
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}
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switch vrType := vr.Type(); vrType {
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case bsontype.Type(0), bsontype.EmbeddedDocument:
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dc.Ancestor = tD
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case bsontype.Null:
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val.Set(reflect.Zero(val.Type()))
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return vr.ReadNull()
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default:
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return fmt.Errorf("cannot decode %v into a primitive.D", vrType)
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}
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dr, err := vr.ReadDocument()
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if err != nil {
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return err
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}
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decoder, err := dc.LookupDecoder(tEmpty)
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if err != nil {
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return err
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}
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tEmptyTypeDecoder, _ := decoder.(typeDecoder)
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// Use the elements in the provided value if it's non nil. Otherwise, allocate a new D instance.
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var elems primitive.D
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if !val.IsNil() {
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val.SetLen(0)
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elems = val.Interface().(primitive.D)
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} else {
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elems = make(primitive.D, 0)
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}
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for {
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key, elemVr, err := dr.ReadElement()
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if errors.Is(err, bsonrw.ErrEOD) {
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break
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} else if err != nil {
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return err
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}
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// Pass false for convert because we don't need to call reflect.Value.Convert for tEmpty.
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elem, err := decodeTypeOrValueWithInfo(decoder, tEmptyTypeDecoder, dc, elemVr, tEmpty, false)
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if err != nil {
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return err
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}
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elems = append(elems, primitive.E{Key: key, Value: elem.Interface()})
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}
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val.Set(reflect.ValueOf(elems))
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return nil
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}
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func (dvd DefaultValueDecoders) booleanDecodeType(_ DecodeContext, vr bsonrw.ValueReader, t reflect.Type) (reflect.Value, error) {
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if t.Kind() != reflect.Bool {
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return emptyValue, ValueDecoderError{
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Name: "BooleanDecodeValue",
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Kinds: []reflect.Kind{reflect.Bool},
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Received: reflect.Zero(t),
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}
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}
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var b bool
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var err error
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switch vrType := vr.Type(); vrType {
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case bsontype.Int32:
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i32, err := vr.ReadInt32()
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if err != nil {
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return emptyValue, err
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}
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b = (i32 != 0)
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case bsontype.Int64:
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i64, err := vr.ReadInt64()
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if err != nil {
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return emptyValue, err
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}
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b = (i64 != 0)
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case bsontype.Double:
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f64, err := vr.ReadDouble()
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if err != nil {
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return emptyValue, err
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}
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b = (f64 != 0)
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case bsontype.Boolean:
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b, err = vr.ReadBoolean()
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case bsontype.Null:
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err = vr.ReadNull()
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case bsontype.Undefined:
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err = vr.ReadUndefined()
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default:
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return emptyValue, fmt.Errorf("cannot decode %v into a boolean", vrType)
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}
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if err != nil {
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return emptyValue, err
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}
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return reflect.ValueOf(b), nil
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}
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// BooleanDecodeValue is the ValueDecoderFunc for bool types.
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//
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// Deprecated: Use [go.mongodb.org/mongo-driver/bson.NewRegistry] to get a registry with all default
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// value decoders registered.
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func (dvd DefaultValueDecoders) BooleanDecodeValue(dctx DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
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if !val.IsValid() || !val.CanSet() || val.Kind() != reflect.Bool {
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return ValueDecoderError{Name: "BooleanDecodeValue", Kinds: []reflect.Kind{reflect.Bool}, Received: val}
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}
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elem, err := dvd.booleanDecodeType(dctx, 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.SetBool(elem.Bool())
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return nil
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}
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func (DefaultValueDecoders) intDecodeType(dc DecodeContext, vr bsonrw.ValueReader, t reflect.Type) (reflect.Value, error) {
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var i64 int64
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var err error
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switch vrType := vr.Type(); vrType {
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case bsontype.Int32:
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i32, err := vr.ReadInt32()
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if err != nil {
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return emptyValue, err
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}
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i64 = int64(i32)
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case bsontype.Int64:
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i64, err = vr.ReadInt64()
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if err != nil {
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return emptyValue, err
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}
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case bsontype.Double:
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f64, err := vr.ReadDouble()
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if err != nil {
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return emptyValue, err
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}
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if !dc.Truncate && math.Floor(f64) != f64 {
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return emptyValue, errCannotTruncate
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}
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if f64 > float64(math.MaxInt64) {
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return emptyValue, fmt.Errorf("%g overflows int64", f64)
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}
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i64 = int64(f64)
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case bsontype.Boolean:
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b, err := vr.ReadBoolean()
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if err != nil {
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return emptyValue, err
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}
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if b {
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i64 = 1
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}
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case bsontype.Null:
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if err = vr.ReadNull(); err != nil {
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return emptyValue, err
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}
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case bsontype.Undefined:
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if err = vr.ReadUndefined(); err != nil {
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return emptyValue, err
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}
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default:
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return emptyValue, fmt.Errorf("cannot decode %v into an integer type", vrType)
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}
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switch t.Kind() {
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case reflect.Int8:
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if i64 < math.MinInt8 || i64 > math.MaxInt8 {
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return emptyValue, fmt.Errorf("%d overflows int8", i64)
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}
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return reflect.ValueOf(int8(i64)), nil
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case reflect.Int16:
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if i64 < math.MinInt16 || i64 > math.MaxInt16 {
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return emptyValue, fmt.Errorf("%d overflows int16", i64)
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}
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return reflect.ValueOf(int16(i64)), nil
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case reflect.Int32:
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if i64 < math.MinInt32 || i64 > math.MaxInt32 {
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return emptyValue, fmt.Errorf("%d overflows int32", i64)
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}
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return reflect.ValueOf(int32(i64)), nil
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case reflect.Int64:
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return reflect.ValueOf(i64), nil
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case reflect.Int:
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if int64(int(i64)) != i64 { // Can we fit this inside of an int
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return emptyValue, fmt.Errorf("%d overflows int", i64)
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}
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return reflect.ValueOf(int(i64)), nil
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default:
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return emptyValue, ValueDecoderError{
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Name: "IntDecodeValue",
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Kinds: []reflect.Kind{reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int},
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Received: reflect.Zero(t),
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}
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}
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}
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// IntDecodeValue is the ValueDecoderFunc for int types.
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//
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// Deprecated: Use [go.mongodb.org/mongo-driver/bson.NewRegistry] to get a registry with all default
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// value decoders registered.
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func (dvd DefaultValueDecoders) IntDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
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if !val.CanSet() {
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return ValueDecoderError{
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Name: "IntDecodeValue",
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Kinds: []reflect.Kind{reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int},
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Received: val,
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}
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}
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elem, err := dvd.intDecodeType(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.SetInt(elem.Int())
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return nil
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}
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// UintDecodeValue is the ValueDecoderFunc for uint types.
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//
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// Deprecated: UintDecodeValue is not registered by default. Use UintCodec.DecodeValue instead.
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func (dvd DefaultValueDecoders) UintDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
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var i64 int64
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var err error
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switch vr.Type() {
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case bsontype.Int32:
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i32, err := vr.ReadInt32()
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if err != nil {
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return err
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}
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i64 = int64(i32)
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case bsontype.Int64:
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i64, err = vr.ReadInt64()
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if err != nil {
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return err
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}
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case bsontype.Double:
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f64, err := vr.ReadDouble()
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if err != nil {
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return err
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}
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if !dc.Truncate && math.Floor(f64) != f64 {
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return errors.New("UintDecodeValue can only truncate float64 to an integer type when truncation is enabled")
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}
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if f64 > float64(math.MaxInt64) {
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return fmt.Errorf("%g overflows int64", f64)
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}
|
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i64 = int64(f64)
|
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case bsontype.Boolean:
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b, err := vr.ReadBoolean()
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if err != nil {
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return err
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}
|
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if b {
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i64 = 1
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}
|
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default:
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return fmt.Errorf("cannot decode %v into an integer type", vr.Type())
|
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}
|
|
|
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if !val.CanSet() {
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return ValueDecoderError{
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Name: "UintDecodeValue",
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Kinds: []reflect.Kind{reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint},
|
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Received: val,
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}
|
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}
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|
|
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switch val.Kind() {
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case reflect.Uint8:
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if i64 < 0 || i64 > math.MaxUint8 {
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return fmt.Errorf("%d overflows uint8", i64)
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}
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case reflect.Uint16:
|
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if i64 < 0 || i64 > math.MaxUint16 {
|
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return fmt.Errorf("%d overflows uint16", i64)
|
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}
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case reflect.Uint32:
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if i64 < 0 || i64 > math.MaxUint32 {
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return fmt.Errorf("%d overflows uint32", i64)
|
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}
|
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case reflect.Uint64:
|
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if i64 < 0 {
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return fmt.Errorf("%d overflows uint64", i64)
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}
|
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case reflect.Uint:
|
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if i64 < 0 || int64(uint(i64)) != i64 { // Can we fit this inside of an uint
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return fmt.Errorf("%d overflows uint", i64)
|
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}
|
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default:
|
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return ValueDecoderError{
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Name: "UintDecodeValue",
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Kinds: []reflect.Kind{reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint},
|
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Received: val,
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}
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}
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val.SetUint(uint64(i64))
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return nil
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}
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|
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func (dvd DefaultValueDecoders) floatDecodeType(dc DecodeContext, vr bsonrw.ValueReader, t reflect.Type) (reflect.Value, error) {
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var f float64
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var err error
|
|
switch vrType := vr.Type(); vrType {
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case bsontype.Int32:
|
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i32, err := vr.ReadInt32()
|
|
if err != nil {
|
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return emptyValue, err
|
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}
|
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f = float64(i32)
|
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case bsontype.Int64:
|
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i64, err := vr.ReadInt64()
|
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if err != nil {
|
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return emptyValue, err
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}
|
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f = float64(i64)
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case bsontype.Double:
|
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f, err = vr.ReadDouble()
|
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if err != nil {
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return emptyValue, err
|
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}
|
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case bsontype.Boolean:
|
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b, err := vr.ReadBoolean()
|
|
if err != nil {
|
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return emptyValue, err
|
|
}
|
|
if b {
|
|
f = 1
|
|
}
|
|
case bsontype.Null:
|
|
if err = vr.ReadNull(); err != nil {
|
|
return emptyValue, err
|
|
}
|
|
case bsontype.Undefined:
|
|
if err = vr.ReadUndefined(); err != nil {
|
|
return emptyValue, err
|
|
}
|
|
default:
|
|
return emptyValue, fmt.Errorf("cannot decode %v into a float32 or float64 type", vrType)
|
|
}
|
|
|
|
switch t.Kind() {
|
|
case reflect.Float32:
|
|
if !dc.Truncate && float64(float32(f)) != f {
|
|
return emptyValue, errCannotTruncate
|
|
}
|
|
|
|
return reflect.ValueOf(float32(f)), nil
|
|
case reflect.Float64:
|
|
return reflect.ValueOf(f), nil
|
|
default:
|
|
return emptyValue, ValueDecoderError{
|
|
Name: "FloatDecodeValue",
|
|
Kinds: []reflect.Kind{reflect.Float32, reflect.Float64},
|
|
Received: reflect.Zero(t),
|
|
}
|
|
}
|
|
}
|
|
|
|
// FloatDecodeValue is the ValueDecoderFunc for float types.
|
|
//
|
|
// Deprecated: Use [go.mongodb.org/mongo-driver/bson.NewRegistry] to get a registry with all default
|
|
// value decoders registered.
|
|
func (dvd DefaultValueDecoders) FloatDecodeValue(ec DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
|
|
if !val.CanSet() {
|
|
return ValueDecoderError{
|
|
Name: "FloatDecodeValue",
|
|
Kinds: []reflect.Kind{reflect.Float32, reflect.Float64},
|
|
Received: val,
|
|
}
|
|
}
|
|
|
|
elem, err := dvd.floatDecodeType(ec, vr, val.Type())
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
val.SetFloat(elem.Float())
|
|
return nil
|
|
}
|
|
|
|
// StringDecodeValue is the ValueDecoderFunc for string types.
|
|
//
|
|
// Deprecated: StringDecodeValue is not registered by default. Use StringCodec.DecodeValue instead.
|
|
func (dvd DefaultValueDecoders) StringDecodeValue(_ DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
|
|
var str string
|
|
var err error
|
|
switch vr.Type() {
|
|
// TODO(GODRIVER-577): Handle JavaScript and Symbol BSON types when allowed.
|
|
case bsontype.String:
|
|
str, err = vr.ReadString()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
default:
|
|
return fmt.Errorf("cannot decode %v into a string type", vr.Type())
|
|
}
|
|
if !val.CanSet() || val.Kind() != reflect.String {
|
|
return ValueDecoderError{Name: "StringDecodeValue", Kinds: []reflect.Kind{reflect.String}, Received: val}
|
|
}
|
|
|
|
val.SetString(str)
|
|
return nil
|
|
}
|
|
|
|
func (DefaultValueDecoders) javaScriptDecodeType(_ DecodeContext, vr bsonrw.ValueReader, t reflect.Type) (reflect.Value, error) {
|
|
if t != tJavaScript {
|
|
return emptyValue, ValueDecoderError{
|
|
Name: "JavaScriptDecodeValue",
|
|
Types: []reflect.Type{tJavaScript},
|
|
Received: reflect.Zero(t),
|
|
}
|
|
}
|
|
|
|
var js string
|
|
var err error
|
|
switch vrType := vr.Type(); vrType {
|
|
case bsontype.JavaScript:
|
|
js, err = vr.ReadJavascript()
|
|
case bsontype.Null:
|
|
err = vr.ReadNull()
|
|
case bsontype.Undefined:
|
|
err = vr.ReadUndefined()
|
|
default:
|
|
return emptyValue, fmt.Errorf("cannot decode %v into a primitive.JavaScript", vrType)
|
|
}
|
|
if err != nil {
|
|
return emptyValue, err
|
|
}
|
|
|
|
return reflect.ValueOf(primitive.JavaScript(js)), nil
|
|
}
|
|
|
|
// JavaScriptDecodeValue is the ValueDecoderFunc for the primitive.JavaScript type.
|
|
//
|
|
// Deprecated: Use [go.mongodb.org/mongo-driver/bson.NewRegistry] to get a registry with all default
|
|
// value decoders registered.
|
|
func (dvd DefaultValueDecoders) JavaScriptDecodeValue(dctx DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
|
|
if !val.CanSet() || val.Type() != tJavaScript {
|
|
return ValueDecoderError{Name: "JavaScriptDecodeValue", Types: []reflect.Type{tJavaScript}, Received: val}
|
|
}
|
|
|
|
elem, err := dvd.javaScriptDecodeType(dctx, vr, tJavaScript)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
val.SetString(elem.String())
|
|
return nil
|
|
}
|
|
|
|
func (DefaultValueDecoders) symbolDecodeType(_ DecodeContext, vr bsonrw.ValueReader, t reflect.Type) (reflect.Value, error) {
|
|
if t != tSymbol {
|
|
return emptyValue, ValueDecoderError{
|
|
Name: "SymbolDecodeValue",
|
|
Types: []reflect.Type{tSymbol},
|
|
Received: reflect.Zero(t),
|
|
}
|
|
}
|
|
|
|
var symbol string
|
|
var err error
|
|
switch vrType := vr.Type(); vrType {
|
|
case bsontype.String:
|
|
symbol, err = vr.ReadString()
|
|
case bsontype.Symbol:
|
|
symbol, err = vr.ReadSymbol()
|
|
case bsontype.Binary:
|
|
data, subtype, err := vr.ReadBinary()
|
|
if err != nil {
|
|
return emptyValue, err
|
|
}
|
|
|
|
if subtype != bsontype.BinaryGeneric && subtype != bsontype.BinaryBinaryOld {
|
|
return emptyValue, decodeBinaryError{subtype: subtype, typeName: "primitive.Symbol"}
|
|
}
|
|
symbol = string(data)
|
|
case bsontype.Null:
|
|
err = vr.ReadNull()
|
|
case bsontype.Undefined:
|
|
err = vr.ReadUndefined()
|
|
default:
|
|
return emptyValue, fmt.Errorf("cannot decode %v into a primitive.Symbol", vrType)
|
|
}
|
|
if err != nil {
|
|
return emptyValue, err
|
|
}
|
|
|
|
return reflect.ValueOf(primitive.Symbol(symbol)), nil
|
|
}
|
|
|
|
// SymbolDecodeValue is the ValueDecoderFunc for the primitive.Symbol type.
|
|
//
|
|
// Deprecated: Use [go.mongodb.org/mongo-driver/bson.NewRegistry] to get a registry with all default
|
|
// value decoders registered.
|
|
func (dvd DefaultValueDecoders) SymbolDecodeValue(dctx DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
|
|
if !val.CanSet() || val.Type() != tSymbol {
|
|
return ValueDecoderError{Name: "SymbolDecodeValue", Types: []reflect.Type{tSymbol}, Received: val}
|
|
}
|
|
|
|
elem, err := dvd.symbolDecodeType(dctx, vr, tSymbol)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
val.SetString(elem.String())
|
|
return nil
|
|
}
|
|
|
|
func (DefaultValueDecoders) binaryDecodeType(_ DecodeContext, vr bsonrw.ValueReader, t reflect.Type) (reflect.Value, error) {
|
|
if t != tBinary {
|
|
return emptyValue, ValueDecoderError{
|
|
Name: "BinaryDecodeValue",
|
|
Types: []reflect.Type{tBinary},
|
|
Received: reflect.Zero(t),
|
|
}
|
|
}
|
|
|
|
var data []byte
|
|
var subtype byte
|
|
var err error
|
|
switch vrType := vr.Type(); vrType {
|
|
case bsontype.Binary:
|
|
data, subtype, err = vr.ReadBinary()
|
|
case bsontype.Null:
|
|
err = vr.ReadNull()
|
|
case bsontype.Undefined:
|
|
err = vr.ReadUndefined()
|
|
default:
|
|
return emptyValue, fmt.Errorf("cannot decode %v into a Binary", vrType)
|
|
}
|
|
if err != nil {
|
|
return emptyValue, err
|
|
}
|
|
|
|
return reflect.ValueOf(primitive.Binary{Subtype: subtype, Data: data}), nil
|
|
}
|
|
|
|
// BinaryDecodeValue is the ValueDecoderFunc for Binary.
|
|
//
|
|
// Deprecated: Use [go.mongodb.org/mongo-driver/bson.NewRegistry] to get a registry with all default
|
|
// value decoders registered.
|
|
func (dvd DefaultValueDecoders) BinaryDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
|
|
if !val.CanSet() || val.Type() != tBinary {
|
|
return ValueDecoderError{Name: "BinaryDecodeValue", Types: []reflect.Type{tBinary}, Received: val}
|
|
}
|
|
|
|
elem, err := dvd.binaryDecodeType(dc, vr, tBinary)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
val.Set(elem)
|
|
return nil
|
|
}
|
|
|
|
func (DefaultValueDecoders) undefinedDecodeType(_ DecodeContext, vr bsonrw.ValueReader, t reflect.Type) (reflect.Value, error) {
|
|
if t != tUndefined {
|
|
return emptyValue, ValueDecoderError{
|
|
Name: "UndefinedDecodeValue",
|
|
Types: []reflect.Type{tUndefined},
|
|
Received: reflect.Zero(t),
|
|
}
|
|
}
|
|
|
|
var err error
|
|
switch vrType := vr.Type(); vrType {
|
|
case bsontype.Undefined:
|
|
err = vr.ReadUndefined()
|
|
case bsontype.Null:
|
|
err = vr.ReadNull()
|
|
default:
|
|
return emptyValue, fmt.Errorf("cannot decode %v into an Undefined", vr.Type())
|
|
}
|
|
if err != nil {
|
|
return emptyValue, err
|
|
}
|
|
|
|
return reflect.ValueOf(primitive.Undefined{}), nil
|
|
}
|
|
|
|
// UndefinedDecodeValue is the ValueDecoderFunc for Undefined.
|
|
//
|
|
// Deprecated: Use [go.mongodb.org/mongo-driver/bson.NewRegistry] to get a registry with all default
|
|
// value decoders registered.
|
|
func (dvd DefaultValueDecoders) UndefinedDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
|
|
if !val.CanSet() || val.Type() != tUndefined {
|
|
return ValueDecoderError{Name: "UndefinedDecodeValue", Types: []reflect.Type{tUndefined}, Received: val}
|
|
}
|
|
|
|
elem, err := dvd.undefinedDecodeType(dc, vr, tUndefined)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
val.Set(elem)
|
|
return nil
|
|
}
|
|
|
|
// Accept both 12-byte string and pretty-printed 24-byte hex string formats.
|
|
func (dvd DefaultValueDecoders) objectIDDecodeType(_ DecodeContext, vr bsonrw.ValueReader, t reflect.Type) (reflect.Value, error) {
|
|
if t != tOID {
|
|
return emptyValue, ValueDecoderError{
|
|
Name: "ObjectIDDecodeValue",
|
|
Types: []reflect.Type{tOID},
|
|
Received: reflect.Zero(t),
|
|
}
|
|
}
|
|
|
|
var oid primitive.ObjectID
|
|
var err error
|
|
switch vrType := vr.Type(); vrType {
|
|
case bsontype.ObjectID:
|
|
oid, err = vr.ReadObjectID()
|
|
if err != nil {
|
|
return emptyValue, err
|
|
}
|
|
case bsontype.String:
|
|
str, err := vr.ReadString()
|
|
if err != nil {
|
|
return emptyValue, err
|
|
}
|
|
if oid, err = primitive.ObjectIDFromHex(str); err == nil {
|
|
break
|
|
}
|
|
if len(str) != 12 {
|
|
return emptyValue, fmt.Errorf("an ObjectID string must be exactly 12 bytes long (got %v)", len(str))
|
|
}
|
|
byteArr := []byte(str)
|
|
copy(oid[:], byteArr)
|
|
case bsontype.Null:
|
|
if err = vr.ReadNull(); err != nil {
|
|
return emptyValue, err
|
|
}
|
|
case bsontype.Undefined:
|
|
if err = vr.ReadUndefined(); err != nil {
|
|
return emptyValue, err
|
|
}
|
|
default:
|
|
return emptyValue, fmt.Errorf("cannot decode %v into an ObjectID", vrType)
|
|
}
|
|
|
|
return reflect.ValueOf(oid), nil
|
|
}
|
|
|
|
// ObjectIDDecodeValue is the ValueDecoderFunc for primitive.ObjectID.
|
|
//
|
|
// Deprecated: Use [go.mongodb.org/mongo-driver/bson.NewRegistry] to get a registry with all default
|
|
// value decoders registered.
|
|
func (dvd DefaultValueDecoders) ObjectIDDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
|
|
if !val.CanSet() || val.Type() != tOID {
|
|
return ValueDecoderError{Name: "ObjectIDDecodeValue", Types: []reflect.Type{tOID}, Received: val}
|
|
}
|
|
|
|
elem, err := dvd.objectIDDecodeType(dc, vr, tOID)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
val.Set(elem)
|
|
return nil
|
|
}
|
|
|
|
func (DefaultValueDecoders) dateTimeDecodeType(_ DecodeContext, vr bsonrw.ValueReader, t reflect.Type) (reflect.Value, error) {
|
|
if t != tDateTime {
|
|
return emptyValue, ValueDecoderError{
|
|
Name: "DateTimeDecodeValue",
|
|
Types: []reflect.Type{tDateTime},
|
|
Received: reflect.Zero(t),
|
|
}
|
|
}
|
|
|
|
var dt int64
|
|
var err error
|
|
switch vrType := vr.Type(); vrType {
|
|
case bsontype.DateTime:
|
|
dt, err = vr.ReadDateTime()
|
|
case bsontype.Null:
|
|
err = vr.ReadNull()
|
|
case bsontype.Undefined:
|
|
err = vr.ReadUndefined()
|
|
default:
|
|
return emptyValue, fmt.Errorf("cannot decode %v into a DateTime", vrType)
|
|
}
|
|
if err != nil {
|
|
return emptyValue, err
|
|
}
|
|
|
|
return reflect.ValueOf(primitive.DateTime(dt)), nil
|
|
}
|
|
|
|
// DateTimeDecodeValue is the ValueDecoderFunc for DateTime.
|
|
//
|
|
// Deprecated: Use [go.mongodb.org/mongo-driver/bson.NewRegistry] to get a registry with all default
|
|
// value decoders registered.
|
|
func (dvd DefaultValueDecoders) DateTimeDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
|
|
if !val.CanSet() || val.Type() != tDateTime {
|
|
return ValueDecoderError{Name: "DateTimeDecodeValue", Types: []reflect.Type{tDateTime}, Received: val}
|
|
}
|
|
|
|
elem, err := dvd.dateTimeDecodeType(dc, vr, tDateTime)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
val.Set(elem)
|
|
return nil
|
|
}
|
|
|
|
func (DefaultValueDecoders) nullDecodeType(_ DecodeContext, vr bsonrw.ValueReader, t reflect.Type) (reflect.Value, error) {
|
|
if t != tNull {
|
|
return emptyValue, ValueDecoderError{
|
|
Name: "NullDecodeValue",
|
|
Types: []reflect.Type{tNull},
|
|
Received: reflect.Zero(t),
|
|
}
|
|
}
|
|
|
|
var err error
|
|
switch vrType := vr.Type(); vrType {
|
|
case bsontype.Undefined:
|
|
err = vr.ReadUndefined()
|
|
case bsontype.Null:
|
|
err = vr.ReadNull()
|
|
default:
|
|
return emptyValue, fmt.Errorf("cannot decode %v into a Null", vr.Type())
|
|
}
|
|
if err != nil {
|
|
return emptyValue, err
|
|
}
|
|
|
|
return reflect.ValueOf(primitive.Null{}), nil
|
|
}
|
|
|
|
// NullDecodeValue is the ValueDecoderFunc for Null.
|
|
//
|
|
// Deprecated: Use [go.mongodb.org/mongo-driver/bson.NewRegistry] to get a registry with all default
|
|
// value decoders registered.
|
|
func (dvd DefaultValueDecoders) NullDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
|
|
if !val.CanSet() || val.Type() != tNull {
|
|
return ValueDecoderError{Name: "NullDecodeValue", Types: []reflect.Type{tNull}, Received: val}
|
|
}
|
|
|
|
elem, err := dvd.nullDecodeType(dc, vr, tNull)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
val.Set(elem)
|
|
return nil
|
|
}
|
|
|
|
func (DefaultValueDecoders) regexDecodeType(_ DecodeContext, vr bsonrw.ValueReader, t reflect.Type) (reflect.Value, error) {
|
|
if t != tRegex {
|
|
return emptyValue, ValueDecoderError{
|
|
Name: "RegexDecodeValue",
|
|
Types: []reflect.Type{tRegex},
|
|
Received: reflect.Zero(t),
|
|
}
|
|
}
|
|
|
|
var pattern, options string
|
|
var err error
|
|
switch vrType := vr.Type(); vrType {
|
|
case bsontype.Regex:
|
|
pattern, options, err = vr.ReadRegex()
|
|
case bsontype.Null:
|
|
err = vr.ReadNull()
|
|
case bsontype.Undefined:
|
|
err = vr.ReadUndefined()
|
|
default:
|
|
return emptyValue, fmt.Errorf("cannot decode %v into a Regex", vrType)
|
|
}
|
|
if err != nil {
|
|
return emptyValue, err
|
|
}
|
|
|
|
return reflect.ValueOf(primitive.Regex{Pattern: pattern, Options: options}), nil
|
|
}
|
|
|
|
// RegexDecodeValue is the ValueDecoderFunc for Regex.
|
|
//
|
|
// Deprecated: Use [go.mongodb.org/mongo-driver/bson.NewRegistry] to get a registry with all default
|
|
// value decoders registered.
|
|
func (dvd DefaultValueDecoders) RegexDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
|
|
if !val.CanSet() || val.Type() != tRegex {
|
|
return ValueDecoderError{Name: "RegexDecodeValue", Types: []reflect.Type{tRegex}, Received: val}
|
|
}
|
|
|
|
elem, err := dvd.regexDecodeType(dc, vr, tRegex)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
val.Set(elem)
|
|
return nil
|
|
}
|
|
|
|
func (DefaultValueDecoders) dBPointerDecodeType(_ DecodeContext, vr bsonrw.ValueReader, t reflect.Type) (reflect.Value, error) {
|
|
if t != tDBPointer {
|
|
return emptyValue, ValueDecoderError{
|
|
Name: "DBPointerDecodeValue",
|
|
Types: []reflect.Type{tDBPointer},
|
|
Received: reflect.Zero(t),
|
|
}
|
|
}
|
|
|
|
var ns string
|
|
var pointer primitive.ObjectID
|
|
var err error
|
|
switch vrType := vr.Type(); vrType {
|
|
case bsontype.DBPointer:
|
|
ns, pointer, err = vr.ReadDBPointer()
|
|
case bsontype.Null:
|
|
err = vr.ReadNull()
|
|
case bsontype.Undefined:
|
|
err = vr.ReadUndefined()
|
|
default:
|
|
return emptyValue, fmt.Errorf("cannot decode %v into a DBPointer", vrType)
|
|
}
|
|
if err != nil {
|
|
return emptyValue, err
|
|
}
|
|
|
|
return reflect.ValueOf(primitive.DBPointer{DB: ns, Pointer: pointer}), nil
|
|
}
|
|
|
|
// DBPointerDecodeValue is the ValueDecoderFunc for DBPointer.
|
|
//
|
|
// Deprecated: Use [go.mongodb.org/mongo-driver/bson.NewRegistry] to get a registry with all default
|
|
// value decoders registered.
|
|
func (dvd DefaultValueDecoders) DBPointerDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
|
|
if !val.CanSet() || val.Type() != tDBPointer {
|
|
return ValueDecoderError{Name: "DBPointerDecodeValue", Types: []reflect.Type{tDBPointer}, Received: val}
|
|
}
|
|
|
|
elem, err := dvd.dBPointerDecodeType(dc, vr, tDBPointer)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
val.Set(elem)
|
|
return nil
|
|
}
|
|
|
|
func (DefaultValueDecoders) timestampDecodeType(_ DecodeContext, vr bsonrw.ValueReader, reflectType reflect.Type) (reflect.Value, error) {
|
|
if reflectType != tTimestamp {
|
|
return emptyValue, ValueDecoderError{
|
|
Name: "TimestampDecodeValue",
|
|
Types: []reflect.Type{tTimestamp},
|
|
Received: reflect.Zero(reflectType),
|
|
}
|
|
}
|
|
|
|
var t, incr uint32
|
|
var err error
|
|
switch vrType := vr.Type(); vrType {
|
|
case bsontype.Timestamp:
|
|
t, incr, err = vr.ReadTimestamp()
|
|
case bsontype.Null:
|
|
err = vr.ReadNull()
|
|
case bsontype.Undefined:
|
|
err = vr.ReadUndefined()
|
|
default:
|
|
return emptyValue, fmt.Errorf("cannot decode %v into a Timestamp", vrType)
|
|
}
|
|
if err != nil {
|
|
return emptyValue, err
|
|
}
|
|
|
|
return reflect.ValueOf(primitive.Timestamp{T: t, I: incr}), nil
|
|
}
|
|
|
|
// TimestampDecodeValue is the ValueDecoderFunc for Timestamp.
|
|
//
|
|
// Deprecated: Use [go.mongodb.org/mongo-driver/bson.NewRegistry] to get a registry with all default
|
|
// value decoders registered.
|
|
func (dvd DefaultValueDecoders) TimestampDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
|
|
if !val.CanSet() || val.Type() != tTimestamp {
|
|
return ValueDecoderError{Name: "TimestampDecodeValue", Types: []reflect.Type{tTimestamp}, Received: val}
|
|
}
|
|
|
|
elem, err := dvd.timestampDecodeType(dc, vr, tTimestamp)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
val.Set(elem)
|
|
return nil
|
|
}
|
|
|
|
func (DefaultValueDecoders) minKeyDecodeType(_ DecodeContext, vr bsonrw.ValueReader, t reflect.Type) (reflect.Value, error) {
|
|
if t != tMinKey {
|
|
return emptyValue, ValueDecoderError{
|
|
Name: "MinKeyDecodeValue",
|
|
Types: []reflect.Type{tMinKey},
|
|
Received: reflect.Zero(t),
|
|
}
|
|
}
|
|
|
|
var err error
|
|
switch vrType := vr.Type(); vrType {
|
|
case bsontype.MinKey:
|
|
err = vr.ReadMinKey()
|
|
case bsontype.Null:
|
|
err = vr.ReadNull()
|
|
case bsontype.Undefined:
|
|
err = vr.ReadUndefined()
|
|
default:
|
|
return emptyValue, fmt.Errorf("cannot decode %v into a MinKey", vr.Type())
|
|
}
|
|
if err != nil {
|
|
return emptyValue, err
|
|
}
|
|
|
|
return reflect.ValueOf(primitive.MinKey{}), nil
|
|
}
|
|
|
|
// MinKeyDecodeValue is the ValueDecoderFunc for MinKey.
|
|
//
|
|
// Deprecated: Use [go.mongodb.org/mongo-driver/bson.NewRegistry] to get a registry with all default
|
|
// value decoders registered.
|
|
func (dvd DefaultValueDecoders) MinKeyDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
|
|
if !val.CanSet() || val.Type() != tMinKey {
|
|
return ValueDecoderError{Name: "MinKeyDecodeValue", Types: []reflect.Type{tMinKey}, Received: val}
|
|
}
|
|
|
|
elem, err := dvd.minKeyDecodeType(dc, vr, tMinKey)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
val.Set(elem)
|
|
return nil
|
|
}
|
|
|
|
func (DefaultValueDecoders) maxKeyDecodeType(_ DecodeContext, vr bsonrw.ValueReader, t reflect.Type) (reflect.Value, error) {
|
|
if t != tMaxKey {
|
|
return emptyValue, ValueDecoderError{
|
|
Name: "MaxKeyDecodeValue",
|
|
Types: []reflect.Type{tMaxKey},
|
|
Received: reflect.Zero(t),
|
|
}
|
|
}
|
|
|
|
var err error
|
|
switch vrType := vr.Type(); vrType {
|
|
case bsontype.MaxKey:
|
|
err = vr.ReadMaxKey()
|
|
case bsontype.Null:
|
|
err = vr.ReadNull()
|
|
case bsontype.Undefined:
|
|
err = vr.ReadUndefined()
|
|
default:
|
|
return emptyValue, fmt.Errorf("cannot decode %v into a MaxKey", vr.Type())
|
|
}
|
|
if err != nil {
|
|
return emptyValue, err
|
|
}
|
|
|
|
return reflect.ValueOf(primitive.MaxKey{}), nil
|
|
}
|
|
|
|
// MaxKeyDecodeValue is the ValueDecoderFunc for MaxKey.
|
|
//
|
|
// Deprecated: Use [go.mongodb.org/mongo-driver/bson.NewRegistry] to get a registry with all default
|
|
// value decoders registered.
|
|
func (dvd DefaultValueDecoders) MaxKeyDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
|
|
if !val.CanSet() || val.Type() != tMaxKey {
|
|
return ValueDecoderError{Name: "MaxKeyDecodeValue", Types: []reflect.Type{tMaxKey}, Received: val}
|
|
}
|
|
|
|
elem, err := dvd.maxKeyDecodeType(dc, vr, tMaxKey)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
val.Set(elem)
|
|
return nil
|
|
}
|
|
|
|
func (dvd DefaultValueDecoders) decimal128DecodeType(_ DecodeContext, vr bsonrw.ValueReader, t reflect.Type) (reflect.Value, error) {
|
|
if t != tDecimal {
|
|
return emptyValue, ValueDecoderError{
|
|
Name: "Decimal128DecodeValue",
|
|
Types: []reflect.Type{tDecimal},
|
|
Received: reflect.Zero(t),
|
|
}
|
|
}
|
|
|
|
var d128 primitive.Decimal128
|
|
var err error
|
|
switch vrType := vr.Type(); vrType {
|
|
case bsontype.Decimal128:
|
|
d128, err = vr.ReadDecimal128()
|
|
case bsontype.Null:
|
|
err = vr.ReadNull()
|
|
case bsontype.Undefined:
|
|
err = vr.ReadUndefined()
|
|
default:
|
|
return emptyValue, fmt.Errorf("cannot decode %v into a primitive.Decimal128", vr.Type())
|
|
}
|
|
if err != nil {
|
|
return emptyValue, err
|
|
}
|
|
|
|
return reflect.ValueOf(d128), nil
|
|
}
|
|
|
|
// Decimal128DecodeValue is the ValueDecoderFunc for primitive.Decimal128.
|
|
//
|
|
// Deprecated: Use [go.mongodb.org/mongo-driver/bson.NewRegistry] to get a registry with all default
|
|
// value decoders registered.
|
|
func (dvd DefaultValueDecoders) Decimal128DecodeValue(dctx DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
|
|
if !val.CanSet() || val.Type() != tDecimal {
|
|
return ValueDecoderError{Name: "Decimal128DecodeValue", Types: []reflect.Type{tDecimal}, Received: val}
|
|
}
|
|
|
|
elem, err := dvd.decimal128DecodeType(dctx, vr, tDecimal)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
val.Set(elem)
|
|
return nil
|
|
}
|
|
|
|
func (dvd DefaultValueDecoders) jsonNumberDecodeType(_ DecodeContext, vr bsonrw.ValueReader, t reflect.Type) (reflect.Value, error) {
|
|
if t != tJSONNumber {
|
|
return emptyValue, ValueDecoderError{
|
|
Name: "JSONNumberDecodeValue",
|
|
Types: []reflect.Type{tJSONNumber},
|
|
Received: reflect.Zero(t),
|
|
}
|
|
}
|
|
|
|
var jsonNum json.Number
|
|
var err error
|
|
switch vrType := vr.Type(); vrType {
|
|
case bsontype.Double:
|
|
f64, err := vr.ReadDouble()
|
|
if err != nil {
|
|
return emptyValue, err
|
|
}
|
|
jsonNum = json.Number(strconv.FormatFloat(f64, 'f', -1, 64))
|
|
case bsontype.Int32:
|
|
i32, err := vr.ReadInt32()
|
|
if err != nil {
|
|
return emptyValue, err
|
|
}
|
|
jsonNum = json.Number(strconv.FormatInt(int64(i32), 10))
|
|
case bsontype.Int64:
|
|
i64, err := vr.ReadInt64()
|
|
if err != nil {
|
|
return emptyValue, err
|
|
}
|
|
jsonNum = json.Number(strconv.FormatInt(i64, 10))
|
|
case bsontype.Null:
|
|
err = vr.ReadNull()
|
|
case bsontype.Undefined:
|
|
err = vr.ReadUndefined()
|
|
default:
|
|
return emptyValue, fmt.Errorf("cannot decode %v into a json.Number", vrType)
|
|
}
|
|
if err != nil {
|
|
return emptyValue, err
|
|
}
|
|
|
|
return reflect.ValueOf(jsonNum), nil
|
|
}
|
|
|
|
// JSONNumberDecodeValue is the ValueDecoderFunc for json.Number.
|
|
//
|
|
// Deprecated: Use [go.mongodb.org/mongo-driver/bson.NewRegistry] to get a registry with all default
|
|
// value decoders registered.
|
|
func (dvd DefaultValueDecoders) JSONNumberDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
|
|
if !val.CanSet() || val.Type() != tJSONNumber {
|
|
return ValueDecoderError{Name: "JSONNumberDecodeValue", Types: []reflect.Type{tJSONNumber}, Received: val}
|
|
}
|
|
|
|
elem, err := dvd.jsonNumberDecodeType(dc, vr, tJSONNumber)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
val.Set(elem)
|
|
return nil
|
|
}
|
|
|
|
func (dvd DefaultValueDecoders) urlDecodeType(_ DecodeContext, vr bsonrw.ValueReader, t reflect.Type) (reflect.Value, error) {
|
|
if t != tURL {
|
|
return emptyValue, ValueDecoderError{
|
|
Name: "URLDecodeValue",
|
|
Types: []reflect.Type{tURL},
|
|
Received: reflect.Zero(t),
|
|
}
|
|
}
|
|
|
|
urlPtr := &url.URL{}
|
|
var err error
|
|
switch vrType := vr.Type(); vrType {
|
|
case bsontype.String:
|
|
var str string // Declare str here to avoid shadowing err during the ReadString call.
|
|
str, err = vr.ReadString()
|
|
if err != nil {
|
|
return emptyValue, err
|
|
}
|
|
|
|
urlPtr, err = url.Parse(str)
|
|
case bsontype.Null:
|
|
err = vr.ReadNull()
|
|
case bsontype.Undefined:
|
|
err = vr.ReadUndefined()
|
|
default:
|
|
return emptyValue, fmt.Errorf("cannot decode %v into a *url.URL", vrType)
|
|
}
|
|
if err != nil {
|
|
return emptyValue, err
|
|
}
|
|
|
|
return reflect.ValueOf(urlPtr).Elem(), nil
|
|
}
|
|
|
|
// URLDecodeValue is the ValueDecoderFunc for url.URL.
|
|
//
|
|
// Deprecated: Use [go.mongodb.org/mongo-driver/bson.NewRegistry] to get a registry with all default
|
|
// value decoders registered.
|
|
func (dvd DefaultValueDecoders) URLDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
|
|
if !val.CanSet() || val.Type() != tURL {
|
|
return ValueDecoderError{Name: "URLDecodeValue", Types: []reflect.Type{tURL}, Received: val}
|
|
}
|
|
|
|
elem, err := dvd.urlDecodeType(dc, vr, tURL)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
val.Set(elem)
|
|
return nil
|
|
}
|
|
|
|
// TimeDecodeValue is the ValueDecoderFunc for time.Time.
|
|
//
|
|
// Deprecated: TimeDecodeValue is not registered by default. Use TimeCodec.DecodeValue instead.
|
|
func (dvd DefaultValueDecoders) TimeDecodeValue(_ DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
|
|
if vr.Type() != bsontype.DateTime {
|
|
return fmt.Errorf("cannot decode %v into a time.Time", vr.Type())
|
|
}
|
|
|
|
dt, err := vr.ReadDateTime()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if !val.CanSet() || val.Type() != tTime {
|
|
return ValueDecoderError{Name: "TimeDecodeValue", Types: []reflect.Type{tTime}, Received: val}
|
|
}
|
|
|
|
val.Set(reflect.ValueOf(time.Unix(dt/1000, dt%1000*1000000).UTC()))
|
|
return nil
|
|
}
|
|
|
|
// ByteSliceDecodeValue is the ValueDecoderFunc for []byte.
|
|
//
|
|
// Deprecated: ByteSliceDecodeValue is not registered by default. Use ByteSliceCodec.DecodeValue instead.
|
|
func (dvd DefaultValueDecoders) ByteSliceDecodeValue(_ DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
|
|
if vr.Type() != bsontype.Binary && vr.Type() != bsontype.Null {
|
|
return fmt.Errorf("cannot decode %v into a []byte", vr.Type())
|
|
}
|
|
|
|
if !val.CanSet() || val.Type() != tByteSlice {
|
|
return ValueDecoderError{Name: "ByteSliceDecodeValue", Types: []reflect.Type{tByteSlice}, Received: val}
|
|
}
|
|
|
|
if vr.Type() == bsontype.Null {
|
|
val.Set(reflect.Zero(val.Type()))
|
|
return vr.ReadNull()
|
|
}
|
|
|
|
data, subtype, err := vr.ReadBinary()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if subtype != 0x00 {
|
|
return fmt.Errorf("ByteSliceDecodeValue can only be used to decode subtype 0x00 for %s, got %v", bsontype.Binary, subtype)
|
|
}
|
|
|
|
val.Set(reflect.ValueOf(data))
|
|
return nil
|
|
}
|
|
|
|
// MapDecodeValue is the ValueDecoderFunc for map[string]* types.
|
|
//
|
|
// Deprecated: MapDecodeValue is not registered by default. Use MapCodec.DecodeValue instead.
|
|
func (dvd DefaultValueDecoders) MapDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
|
|
if !val.CanSet() || val.Kind() != reflect.Map || val.Type().Key().Kind() != reflect.String {
|
|
return ValueDecoderError{Name: "MapDecodeValue", Kinds: []reflect.Kind{reflect.Map}, Received: val}
|
|
}
|
|
|
|
switch vr.Type() {
|
|
case bsontype.Type(0), bsontype.EmbeddedDocument:
|
|
case bsontype.Null:
|
|
val.Set(reflect.Zero(val.Type()))
|
|
return vr.ReadNull()
|
|
default:
|
|
return fmt.Errorf("cannot decode %v into a %s", vr.Type(), val.Type())
|
|
}
|
|
|
|
dr, err := vr.ReadDocument()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if val.IsNil() {
|
|
val.Set(reflect.MakeMap(val.Type()))
|
|
}
|
|
|
|
eType := val.Type().Elem()
|
|
decoder, err := dc.LookupDecoder(eType)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if eType == tEmpty {
|
|
dc.Ancestor = val.Type()
|
|
}
|
|
|
|
keyType := val.Type().Key()
|
|
for {
|
|
key, vr, err := dr.ReadElement()
|
|
if errors.Is(err, bsonrw.ErrEOD) {
|
|
break
|
|
}
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
elem := reflect.New(eType).Elem()
|
|
|
|
err = decoder.DecodeValue(dc, vr, elem)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
val.SetMapIndex(reflect.ValueOf(key).Convert(keyType), elem)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// ArrayDecodeValue is the ValueDecoderFunc for array types.
|
|
//
|
|
// Deprecated: Use [go.mongodb.org/mongo-driver/bson.NewRegistry] to get a registry with all default
|
|
// value decoders registered.
|
|
func (dvd DefaultValueDecoders) ArrayDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
|
|
if !val.IsValid() || val.Kind() != reflect.Array {
|
|
return ValueDecoderError{Name: "ArrayDecodeValue", Kinds: []reflect.Kind{reflect.Array}, Received: val}
|
|
}
|
|
|
|
switch vrType := vr.Type(); vrType {
|
|
case bsontype.Array:
|
|
case bsontype.Type(0), bsontype.EmbeddedDocument:
|
|
if val.Type().Elem() != tE {
|
|
return fmt.Errorf("cannot decode document into %s", val.Type())
|
|
}
|
|
case bsontype.Binary:
|
|
if val.Type().Elem() != tByte {
|
|
return fmt.Errorf("ArrayDecodeValue can only be used to decode binary into a byte array, got %v", vrType)
|
|
}
|
|
data, subtype, err := vr.ReadBinary()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if subtype != bsontype.BinaryGeneric && subtype != bsontype.BinaryBinaryOld {
|
|
return fmt.Errorf("ArrayDecodeValue can only be used to decode subtype 0x00 or 0x02 for %s, got %v", bsontype.Binary, subtype)
|
|
}
|
|
|
|
if len(data) > val.Len() {
|
|
return fmt.Errorf("more elements returned in array than can fit inside %s", val.Type())
|
|
}
|
|
|
|
for idx, elem := range data {
|
|
val.Index(idx).Set(reflect.ValueOf(elem))
|
|
}
|
|
return nil
|
|
case bsontype.Null:
|
|
val.Set(reflect.Zero(val.Type()))
|
|
return vr.ReadNull()
|
|
case bsontype.Undefined:
|
|
val.Set(reflect.Zero(val.Type()))
|
|
return vr.ReadUndefined()
|
|
default:
|
|
return fmt.Errorf("cannot decode %v into an array", vrType)
|
|
}
|
|
|
|
var elemsFunc func(DecodeContext, bsonrw.ValueReader, reflect.Value) ([]reflect.Value, error)
|
|
switch val.Type().Elem() {
|
|
case tE:
|
|
elemsFunc = dvd.decodeD
|
|
default:
|
|
elemsFunc = dvd.decodeDefault
|
|
}
|
|
|
|
elems, err := elemsFunc(dc, vr, val)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if len(elems) > val.Len() {
|
|
return fmt.Errorf("more elements returned in array than can fit inside %s, got %v elements", val.Type(), len(elems))
|
|
}
|
|
|
|
for idx, elem := range elems {
|
|
val.Index(idx).Set(elem)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// SliceDecodeValue is the ValueDecoderFunc for slice types.
|
|
//
|
|
// Deprecated: SliceDecodeValue is not registered by default. Use SliceCodec.DecodeValue instead.
|
|
func (dvd DefaultValueDecoders) SliceDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
|
|
if !val.CanSet() || val.Kind() != reflect.Slice {
|
|
return ValueDecoderError{Name: "SliceDecodeValue", Kinds: []reflect.Kind{reflect.Slice}, Received: val}
|
|
}
|
|
|
|
switch vr.Type() {
|
|
case bsontype.Array:
|
|
case bsontype.Null:
|
|
val.Set(reflect.Zero(val.Type()))
|
|
return vr.ReadNull()
|
|
case bsontype.Type(0), bsontype.EmbeddedDocument:
|
|
if val.Type().Elem() != tE {
|
|
return fmt.Errorf("cannot decode document into %s", val.Type())
|
|
}
|
|
default:
|
|
return fmt.Errorf("cannot decode %v into a slice", vr.Type())
|
|
}
|
|
|
|
var elemsFunc func(DecodeContext, bsonrw.ValueReader, reflect.Value) ([]reflect.Value, error)
|
|
switch val.Type().Elem() {
|
|
case tE:
|
|
dc.Ancestor = val.Type()
|
|
elemsFunc = dvd.decodeD
|
|
default:
|
|
elemsFunc = dvd.decodeDefault
|
|
}
|
|
|
|
elems, err := elemsFunc(dc, vr, val)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if val.IsNil() {
|
|
val.Set(reflect.MakeSlice(val.Type(), 0, len(elems)))
|
|
}
|
|
|
|
val.SetLen(0)
|
|
val.Set(reflect.Append(val, elems...))
|
|
|
|
return nil
|
|
}
|
|
|
|
// ValueUnmarshalerDecodeValue is the ValueDecoderFunc for ValueUnmarshaler implementations.
|
|
//
|
|
// Deprecated: Use [go.mongodb.org/mongo-driver/bson.NewRegistry] to get a registry with all default
|
|
// value decoders registered.
|
|
func (dvd DefaultValueDecoders) ValueUnmarshalerDecodeValue(_ DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
|
|
if !val.IsValid() || (!val.Type().Implements(tValueUnmarshaler) && !reflect.PtrTo(val.Type()).Implements(tValueUnmarshaler)) {
|
|
return ValueDecoderError{Name: "ValueUnmarshalerDecodeValue", Types: []reflect.Type{tValueUnmarshaler}, Received: val}
|
|
}
|
|
|
|
if val.Kind() == reflect.Ptr && val.IsNil() {
|
|
if !val.CanSet() {
|
|
return ValueDecoderError{Name: "ValueUnmarshalerDecodeValue", Types: []reflect.Type{tValueUnmarshaler}, Received: val}
|
|
}
|
|
val.Set(reflect.New(val.Type().Elem()))
|
|
}
|
|
|
|
if !val.Type().Implements(tValueUnmarshaler) {
|
|
if !val.CanAddr() {
|
|
return ValueDecoderError{Name: "ValueUnmarshalerDecodeValue", Types: []reflect.Type{tValueUnmarshaler}, Received: val}
|
|
}
|
|
val = val.Addr() // If the type doesn't implement the interface, a pointer to it must.
|
|
}
|
|
|
|
t, src, err := bsonrw.Copier{}.CopyValueToBytes(vr)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
m, ok := val.Interface().(ValueUnmarshaler)
|
|
if !ok {
|
|
// NB: this error should be unreachable due to the above checks
|
|
return ValueDecoderError{Name: "ValueUnmarshalerDecodeValue", Types: []reflect.Type{tValueUnmarshaler}, Received: val}
|
|
}
|
|
return m.UnmarshalBSONValue(t, src)
|
|
}
|
|
|
|
// UnmarshalerDecodeValue is the ValueDecoderFunc for Unmarshaler implementations.
|
|
//
|
|
// Deprecated: Use [go.mongodb.org/mongo-driver/bson.NewRegistry] to get a registry with all default
|
|
// value decoders registered.
|
|
func (dvd DefaultValueDecoders) UnmarshalerDecodeValue(_ DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
|
|
if !val.IsValid() || (!val.Type().Implements(tUnmarshaler) && !reflect.PtrTo(val.Type()).Implements(tUnmarshaler)) {
|
|
return ValueDecoderError{Name: "UnmarshalerDecodeValue", Types: []reflect.Type{tUnmarshaler}, Received: val}
|
|
}
|
|
|
|
if val.Kind() == reflect.Ptr && val.IsNil() {
|
|
if !val.CanSet() {
|
|
return ValueDecoderError{Name: "UnmarshalerDecodeValue", Types: []reflect.Type{tUnmarshaler}, Received: val}
|
|
}
|
|
val.Set(reflect.New(val.Type().Elem()))
|
|
}
|
|
|
|
_, src, err := bsonrw.Copier{}.CopyValueToBytes(vr)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// If the target Go value is a pointer and the BSON field value is empty, set the value to the
|
|
// zero value of the pointer (nil) and don't call UnmarshalBSON. UnmarshalBSON has no way to
|
|
// change the pointer value from within the function (only the value at the pointer address),
|
|
// so it can't set the pointer to "nil" itself. Since the most common Go value for an empty BSON
|
|
// field value is "nil", we set "nil" here and don't call UnmarshalBSON. This behavior matches
|
|
// the behavior of the Go "encoding/json" unmarshaler when the target Go value is a pointer and
|
|
// the JSON field value is "null".
|
|
if val.Kind() == reflect.Ptr && len(src) == 0 {
|
|
val.Set(reflect.Zero(val.Type()))
|
|
return nil
|
|
}
|
|
|
|
if !val.Type().Implements(tUnmarshaler) {
|
|
if !val.CanAddr() {
|
|
return ValueDecoderError{Name: "UnmarshalerDecodeValue", Types: []reflect.Type{tUnmarshaler}, Received: val}
|
|
}
|
|
val = val.Addr() // If the type doesn't implement the interface, a pointer to it must.
|
|
}
|
|
|
|
m, ok := val.Interface().(Unmarshaler)
|
|
if !ok {
|
|
// NB: this error should be unreachable due to the above checks
|
|
return ValueDecoderError{Name: "UnmarshalerDecodeValue", Types: []reflect.Type{tUnmarshaler}, Received: val}
|
|
}
|
|
return m.UnmarshalBSON(src)
|
|
}
|
|
|
|
// EmptyInterfaceDecodeValue is the ValueDecoderFunc for interface{}.
|
|
//
|
|
// Deprecated: EmptyInterfaceDecodeValue is not registered by default. Use EmptyInterfaceCodec.DecodeValue instead.
|
|
func (dvd DefaultValueDecoders) EmptyInterfaceDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
|
|
if !val.CanSet() || val.Type() != tEmpty {
|
|
return ValueDecoderError{Name: "EmptyInterfaceDecodeValue", Types: []reflect.Type{tEmpty}, Received: val}
|
|
}
|
|
|
|
rtype, err := dc.LookupTypeMapEntry(vr.Type())
|
|
if err != nil {
|
|
switch vr.Type() {
|
|
case bsontype.EmbeddedDocument:
|
|
if dc.Ancestor != nil {
|
|
rtype = dc.Ancestor
|
|
break
|
|
}
|
|
rtype = tD
|
|
case bsontype.Null:
|
|
val.Set(reflect.Zero(val.Type()))
|
|
return vr.ReadNull()
|
|
default:
|
|
return err
|
|
}
|
|
}
|
|
|
|
decoder, err := dc.LookupDecoder(rtype)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
elem := reflect.New(rtype).Elem()
|
|
err = decoder.DecodeValue(dc, vr, elem)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
val.Set(elem)
|
|
return nil
|
|
}
|
|
|
|
// CoreDocumentDecodeValue is the ValueDecoderFunc for bsoncore.Document.
|
|
//
|
|
// Deprecated: Use [go.mongodb.org/mongo-driver/bson.NewRegistry] to get a registry with all default
|
|
// value decoders registered.
|
|
func (DefaultValueDecoders) CoreDocumentDecodeValue(_ DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
|
|
if !val.CanSet() || val.Type() != tCoreDocument {
|
|
return ValueDecoderError{Name: "CoreDocumentDecodeValue", Types: []reflect.Type{tCoreDocument}, Received: val}
|
|
}
|
|
|
|
if val.IsNil() {
|
|
val.Set(reflect.MakeSlice(val.Type(), 0, 0))
|
|
}
|
|
|
|
val.SetLen(0)
|
|
|
|
cdoc, err := bsonrw.Copier{}.AppendDocumentBytes(val.Interface().(bsoncore.Document), vr)
|
|
val.Set(reflect.ValueOf(cdoc))
|
|
return err
|
|
}
|
|
|
|
func (dvd DefaultValueDecoders) decodeDefault(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) ([]reflect.Value, error) {
|
|
elems := make([]reflect.Value, 0)
|
|
|
|
ar, err := vr.ReadArray()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
eType := val.Type().Elem()
|
|
|
|
decoder, err := dc.LookupDecoder(eType)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
eTypeDecoder, _ := decoder.(typeDecoder)
|
|
|
|
idx := 0
|
|
for {
|
|
vr, err := ar.ReadValue()
|
|
if errors.Is(err, bsonrw.ErrEOA) {
|
|
break
|
|
}
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
elem, err := decodeTypeOrValueWithInfo(decoder, eTypeDecoder, dc, vr, eType, true)
|
|
if err != nil {
|
|
return nil, newDecodeError(strconv.Itoa(idx), err)
|
|
}
|
|
elems = append(elems, elem)
|
|
idx++
|
|
}
|
|
|
|
return elems, nil
|
|
}
|
|
|
|
func (dvd DefaultValueDecoders) readCodeWithScope(dc DecodeContext, vr bsonrw.ValueReader) (primitive.CodeWithScope, error) {
|
|
var cws primitive.CodeWithScope
|
|
|
|
code, dr, err := vr.ReadCodeWithScope()
|
|
if err != nil {
|
|
return cws, err
|
|
}
|
|
|
|
scope := reflect.New(tD).Elem()
|
|
elems, err := dvd.decodeElemsFromDocumentReader(dc, dr)
|
|
if err != nil {
|
|
return cws, err
|
|
}
|
|
|
|
scope.Set(reflect.MakeSlice(tD, 0, len(elems)))
|
|
scope.Set(reflect.Append(scope, elems...))
|
|
|
|
cws = primitive.CodeWithScope{
|
|
Code: primitive.JavaScript(code),
|
|
Scope: scope.Interface().(primitive.D),
|
|
}
|
|
return cws, nil
|
|
}
|
|
|
|
func (dvd DefaultValueDecoders) codeWithScopeDecodeType(dc DecodeContext, vr bsonrw.ValueReader, t reflect.Type) (reflect.Value, error) {
|
|
if t != tCodeWithScope {
|
|
return emptyValue, ValueDecoderError{
|
|
Name: "CodeWithScopeDecodeValue",
|
|
Types: []reflect.Type{tCodeWithScope},
|
|
Received: reflect.Zero(t),
|
|
}
|
|
}
|
|
|
|
var cws primitive.CodeWithScope
|
|
var err error
|
|
switch vrType := vr.Type(); vrType {
|
|
case bsontype.CodeWithScope:
|
|
cws, err = dvd.readCodeWithScope(dc, vr)
|
|
case bsontype.Null:
|
|
err = vr.ReadNull()
|
|
case bsontype.Undefined:
|
|
err = vr.ReadUndefined()
|
|
default:
|
|
return emptyValue, fmt.Errorf("cannot decode %v into a primitive.CodeWithScope", vrType)
|
|
}
|
|
if err != nil {
|
|
return emptyValue, err
|
|
}
|
|
|
|
return reflect.ValueOf(cws), nil
|
|
}
|
|
|
|
// CodeWithScopeDecodeValue is the ValueDecoderFunc for CodeWithScope.
|
|
//
|
|
// Deprecated: Use [go.mongodb.org/mongo-driver/bson.NewRegistry] to get a registry with all default
|
|
// value decoders registered.
|
|
func (dvd DefaultValueDecoders) CodeWithScopeDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error {
|
|
if !val.CanSet() || val.Type() != tCodeWithScope {
|
|
return ValueDecoderError{Name: "CodeWithScopeDecodeValue", Types: []reflect.Type{tCodeWithScope}, Received: val}
|
|
}
|
|
|
|
elem, err := dvd.codeWithScopeDecodeType(dc, vr, tCodeWithScope)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
val.Set(elem)
|
|
return nil
|
|
}
|
|
|
|
func (dvd DefaultValueDecoders) decodeD(dc DecodeContext, vr bsonrw.ValueReader, _ reflect.Value) ([]reflect.Value, error) {
|
|
switch vr.Type() {
|
|
case bsontype.Type(0), bsontype.EmbeddedDocument:
|
|
default:
|
|
return nil, fmt.Errorf("cannot decode %v into a D", vr.Type())
|
|
}
|
|
|
|
dr, err := vr.ReadDocument()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
return dvd.decodeElemsFromDocumentReader(dc, dr)
|
|
}
|
|
|
|
func (DefaultValueDecoders) decodeElemsFromDocumentReader(dc DecodeContext, dr bsonrw.DocumentReader) ([]reflect.Value, error) {
|
|
decoder, err := dc.LookupDecoder(tEmpty)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
elems := make([]reflect.Value, 0)
|
|
for {
|
|
key, vr, err := dr.ReadElement()
|
|
if errors.Is(err, bsonrw.ErrEOD) {
|
|
break
|
|
}
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
val := reflect.New(tEmpty).Elem()
|
|
err = decoder.DecodeValue(dc, vr, val)
|
|
if err != nil {
|
|
return nil, newDecodeError(key, err)
|
|
}
|
|
|
|
elems = append(elems, reflect.ValueOf(primitive.E{Key: key, Value: val.Interface()}))
|
|
}
|
|
|
|
return elems, nil
|
|
}
|