diff options
Diffstat (limited to 'src/mongo/gotools/src/github.com/mongodb/mongo-tools/vendor/go.mongodb.org/mongo-driver/bson/bsoncodec/default_value_decoders.go')
| -rw-r--r-- | src/mongo/gotools/src/github.com/mongodb/mongo-tools/vendor/go.mongodb.org/mongo-driver/bson/bsoncodec/default_value_decoders.go | 1014 |
1 files changed, 0 insertions, 1014 deletions
diff --git a/src/mongo/gotools/src/github.com/mongodb/mongo-tools/vendor/go.mongodb.org/mongo-driver/bson/bsoncodec/default_value_decoders.go b/src/mongo/gotools/src/github.com/mongodb/mongo-tools/vendor/go.mongodb.org/mongo-driver/bson/bsoncodec/default_value_decoders.go deleted file mode 100644 index 65cd1c0a55c..00000000000 --- a/src/mongo/gotools/src/github.com/mongodb/mongo-tools/vendor/go.mongodb.org/mongo-driver/bson/bsoncodec/default_value_decoders.go +++ /dev/null @@ -1,1014 +0,0 @@ -// Copyright (C) MongoDB, Inc. 2017-present. -// -// Licensed under the Apache License, Version 2.0 (the "License"); you may -// not use this file except in compliance with the License. You may obtain -// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 - -package bsoncodec - -import ( - "encoding/json" - "errors" - "fmt" - "math" - "net/url" - "reflect" - "strconv" - "time" - - "go.mongodb.org/mongo-driver/bson/bsonrw" - "go.mongodb.org/mongo-driver/bson/bsontype" - "go.mongodb.org/mongo-driver/bson/primitive" - "go.mongodb.org/mongo-driver/x/bsonx/bsoncore" -) - -var defaultValueDecoders DefaultValueDecoders - -// DefaultValueDecoders is a namespace type for the default ValueDecoders used -// when creating a registry. -type DefaultValueDecoders struct{} - -// RegisterDefaultDecoders will register the decoder methods attached to DefaultValueDecoders with -// the provided RegistryBuilder. -// -// There is no support for decoding map[string]interface{} becuase there is no decoder for -// interface{}, so users must either register this decoder themselves or use the -// EmptyInterfaceDecoder avaialble in the bson package. -func (dvd DefaultValueDecoders) RegisterDefaultDecoders(rb *RegistryBuilder) { - if rb == nil { - panic(errors.New("argument to RegisterDefaultDecoders must not be nil")) - } - - rb. - RegisterDecoder(tBinary, ValueDecoderFunc(dvd.BinaryDecodeValue)). - RegisterDecoder(tUndefined, ValueDecoderFunc(dvd.UndefinedDecodeValue)). - RegisterDecoder(tDateTime, ValueDecoderFunc(dvd.DateTimeDecodeValue)). - RegisterDecoder(tNull, ValueDecoderFunc(dvd.NullDecodeValue)). - RegisterDecoder(tRegex, ValueDecoderFunc(dvd.RegexDecodeValue)). - RegisterDecoder(tDBPointer, ValueDecoderFunc(dvd.DBPointerDecodeValue)). - RegisterDecoder(tTimestamp, ValueDecoderFunc(dvd.TimestampDecodeValue)). - RegisterDecoder(tMinKey, ValueDecoderFunc(dvd.MinKeyDecodeValue)). - RegisterDecoder(tMaxKey, ValueDecoderFunc(dvd.MaxKeyDecodeValue)). - RegisterDecoder(tJavaScript, ValueDecoderFunc(dvd.JavaScriptDecodeValue)). - RegisterDecoder(tSymbol, ValueDecoderFunc(dvd.SymbolDecodeValue)). - RegisterDecoder(tByteSlice, ValueDecoderFunc(dvd.ByteSliceDecodeValue)). - RegisterDecoder(tTime, ValueDecoderFunc(dvd.TimeDecodeValue)). - RegisterDecoder(tEmpty, ValueDecoderFunc(dvd.EmptyInterfaceDecodeValue)). - RegisterDecoder(tOID, ValueDecoderFunc(dvd.ObjectIDDecodeValue)). - RegisterDecoder(tDecimal, ValueDecoderFunc(dvd.Decimal128DecodeValue)). - RegisterDecoder(tJSONNumber, ValueDecoderFunc(dvd.JSONNumberDecodeValue)). - RegisterDecoder(tURL, ValueDecoderFunc(dvd.URLDecodeValue)). - RegisterDecoder(tValueUnmarshaler, ValueDecoderFunc(dvd.ValueUnmarshalerDecodeValue)). - RegisterDecoder(tUnmarshaler, ValueDecoderFunc(dvd.UnmarshalerDecodeValue)). - RegisterDecoder(tCoreDocument, ValueDecoderFunc(dvd.CoreDocumentDecodeValue)). - RegisterDecoder(tCodeWithScope, ValueDecoderFunc(dvd.CodeWithScopeDecodeValue)). - RegisterDefaultDecoder(reflect.Bool, ValueDecoderFunc(dvd.BooleanDecodeValue)). - RegisterDefaultDecoder(reflect.Int, ValueDecoderFunc(dvd.IntDecodeValue)). - RegisterDefaultDecoder(reflect.Int8, ValueDecoderFunc(dvd.IntDecodeValue)). - RegisterDefaultDecoder(reflect.Int16, ValueDecoderFunc(dvd.IntDecodeValue)). - RegisterDefaultDecoder(reflect.Int32, ValueDecoderFunc(dvd.IntDecodeValue)). - RegisterDefaultDecoder(reflect.Int64, ValueDecoderFunc(dvd.IntDecodeValue)). - RegisterDefaultDecoder(reflect.Uint, ValueDecoderFunc(dvd.UintDecodeValue)). - RegisterDefaultDecoder(reflect.Uint8, ValueDecoderFunc(dvd.UintDecodeValue)). - RegisterDefaultDecoder(reflect.Uint16, ValueDecoderFunc(dvd.UintDecodeValue)). - RegisterDefaultDecoder(reflect.Uint32, ValueDecoderFunc(dvd.UintDecodeValue)). - RegisterDefaultDecoder(reflect.Uint64, ValueDecoderFunc(dvd.UintDecodeValue)). - RegisterDefaultDecoder(reflect.Float32, ValueDecoderFunc(dvd.FloatDecodeValue)). - RegisterDefaultDecoder(reflect.Float64, ValueDecoderFunc(dvd.FloatDecodeValue)). - RegisterDefaultDecoder(reflect.Array, ValueDecoderFunc(dvd.ArrayDecodeValue)). - RegisterDefaultDecoder(reflect.Map, ValueDecoderFunc(dvd.MapDecodeValue)). - RegisterDefaultDecoder(reflect.Slice, ValueDecoderFunc(dvd.SliceDecodeValue)). - RegisterDefaultDecoder(reflect.String, ValueDecoderFunc(dvd.StringDecodeValue)). - RegisterDefaultDecoder(reflect.Struct, &StructCodec{cache: make(map[reflect.Type]*structDescription), parser: DefaultStructTagParser}). - RegisterDefaultDecoder(reflect.Ptr, NewPointerCodec()). - RegisterTypeMapEntry(bsontype.Double, tFloat64). - RegisterTypeMapEntry(bsontype.String, tString). - RegisterTypeMapEntry(bsontype.Array, tA). - RegisterTypeMapEntry(bsontype.Binary, tBinary). - RegisterTypeMapEntry(bsontype.Undefined, tUndefined). - RegisterTypeMapEntry(bsontype.ObjectID, tOID). - RegisterTypeMapEntry(bsontype.Boolean, tBool). - RegisterTypeMapEntry(bsontype.DateTime, tDateTime). - RegisterTypeMapEntry(bsontype.Regex, tRegex). - RegisterTypeMapEntry(bsontype.DBPointer, tDBPointer). - RegisterTypeMapEntry(bsontype.JavaScript, tJavaScript). - RegisterTypeMapEntry(bsontype.Symbol, tSymbol). - RegisterTypeMapEntry(bsontype.CodeWithScope, tCodeWithScope). - RegisterTypeMapEntry(bsontype.Int32, tInt32). - RegisterTypeMapEntry(bsontype.Int64, tInt64). - RegisterTypeMapEntry(bsontype.Timestamp, tTimestamp). - RegisterTypeMapEntry(bsontype.Decimal128, tDecimal). - RegisterTypeMapEntry(bsontype.MinKey, tMinKey). - RegisterTypeMapEntry(bsontype.MaxKey, tMaxKey). - RegisterTypeMapEntry(bsontype.Type(0), tD) -} - -// BooleanDecodeValue is the ValueDecoderFunc for bool types. -func (dvd DefaultValueDecoders) BooleanDecodeValue(dctx DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error { - if vr.Type() != bsontype.Boolean { - return fmt.Errorf("cannot decode %v into a boolean", vr.Type()) - } - if !val.IsValid() || !val.CanSet() || val.Kind() != reflect.Bool { - return ValueDecoderError{Name: "BooleanDecodeValue", Kinds: []reflect.Kind{reflect.Bool}, Received: val} - } - - b, err := vr.ReadBoolean() - val.SetBool(b) - return err -} - -// IntDecodeValue is the ValueDecoderFunc for bool types. -func (dvd DefaultValueDecoders) IntDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error { - var i64 int64 - var err error - switch vr.Type() { - case bsontype.Int32: - i32, err := vr.ReadInt32() - if err != nil { - return err - } - i64 = int64(i32) - case bsontype.Int64: - i64, err = vr.ReadInt64() - if err != nil { - return err - } - case bsontype.Double: - f64, err := vr.ReadDouble() - if err != nil { - return err - } - if !dc.Truncate && math.Floor(f64) != f64 { - return errors.New("IntDecodeValue can only truncate float64 to an integer type when truncation is enabled") - } - if f64 > float64(math.MaxInt64) { - return fmt.Errorf("%g overflows int64", f64) - } - i64 = int64(f64) - default: - return fmt.Errorf("cannot decode %v into an integer type", vr.Type()) - } - - if !val.CanSet() { - return ValueDecoderError{ - Name: "IntDecodeValue", - Kinds: []reflect.Kind{reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int}, - Received: val, - } - } - - switch val.Kind() { - case reflect.Int8: - if i64 < math.MinInt8 || i64 > math.MaxInt8 { - return fmt.Errorf("%d overflows int8", i64) - } - case reflect.Int16: - if i64 < math.MinInt16 || i64 > math.MaxInt16 { - return fmt.Errorf("%d overflows int16", i64) - } - case reflect.Int32: - if i64 < math.MinInt32 || i64 > math.MaxInt32 { - return fmt.Errorf("%d overflows int32", i64) - } - case reflect.Int64: - case reflect.Int: - if int64(int(i64)) != i64 { // Can we fit this inside of an int - return fmt.Errorf("%d overflows int", i64) - } - default: - return ValueDecoderError{ - Name: "IntDecodeValue", - Kinds: []reflect.Kind{reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int}, - Received: val, - } - } - - val.SetInt(i64) - return nil -} - -// UintDecodeValue is the ValueDecoderFunc for uint types. -func (dvd DefaultValueDecoders) UintDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error { - var i64 int64 - var err error - switch vr.Type() { - case bsontype.Int32: - i32, err := vr.ReadInt32() - if err != nil { - return err - } - i64 = int64(i32) - case bsontype.Int64: - i64, err = vr.ReadInt64() - if err != nil { - return err - } - case bsontype.Double: - f64, err := vr.ReadDouble() - if err != nil { - return err - } - if !dc.Truncate && math.Floor(f64) != f64 { - return errors.New("UintDecodeValue can only truncate float64 to an integer type when truncation is enabled") - } - if f64 > float64(math.MaxInt64) { - return fmt.Errorf("%g overflows int64", f64) - } - i64 = int64(f64) - default: - return fmt.Errorf("cannot decode %v into an integer type", vr.Type()) - } - - if !val.CanSet() { - return ValueDecoderError{ - Name: "UintDecodeValue", - Kinds: []reflect.Kind{reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint}, - Received: val, - } - } - - switch val.Kind() { - case reflect.Uint8: - if i64 < 0 || i64 > math.MaxUint8 { - return fmt.Errorf("%d overflows uint8", i64) - } - case reflect.Uint16: - if i64 < 0 || i64 > math.MaxUint16 { - return fmt.Errorf("%d overflows uint16", i64) - } - case reflect.Uint32: - if i64 < 0 || i64 > math.MaxUint32 { - return fmt.Errorf("%d overflows uint32", i64) - } - case reflect.Uint64: - if i64 < 0 { - return fmt.Errorf("%d overflows uint64", i64) - } - case reflect.Uint: - if i64 < 0 || int64(uint(i64)) != i64 { // Can we fit this inside of an uint - return fmt.Errorf("%d overflows uint", i64) - } - default: - return ValueDecoderError{ - Name: "UintDecodeValue", - Kinds: []reflect.Kind{reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint}, - Received: val, - } - } - - val.SetUint(uint64(i64)) - return nil -} - -// FloatDecodeValue is the ValueDecoderFunc for float types. -func (dvd DefaultValueDecoders) FloatDecodeValue(ec DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error { - var f float64 - var err error - switch vr.Type() { - case bsontype.Int32: - i32, err := vr.ReadInt32() - if err != nil { - return err - } - f = float64(i32) - case bsontype.Int64: - i64, err := vr.ReadInt64() - if err != nil { - return err - } - f = float64(i64) - case bsontype.Double: - f, err = vr.ReadDouble() - if err != nil { - return err - } - default: - return fmt.Errorf("cannot decode %v into a float32 or float64 type", vr.Type()) - } - - if !val.CanSet() { - return ValueDecoderError{Name: "FloatDecodeValue", Kinds: []reflect.Kind{reflect.Float32, reflect.Float64}, Received: val} - } - - switch val.Kind() { - case reflect.Float32: - if !ec.Truncate && float64(float32(f)) != f { - return errors.New("FloatDecodeValue can only convert float64 to float32 when truncation is allowed") - } - case reflect.Float64: - default: - return ValueDecoderError{Name: "FloatDecodeValue", Kinds: []reflect.Kind{reflect.Float32, reflect.Float64}, Received: val} - } - - val.SetFloat(f) - return nil -} - -// StringDecodeValue is the ValueDecoderFunc for string types. -func (dvd DefaultValueDecoders) StringDecodeValue(dctx 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 -} - -// JavaScriptDecodeValue is the ValueDecoderFunc for the primitive.JavaScript type. -func (DefaultValueDecoders) JavaScriptDecodeValue(dctx DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error { - if !val.CanSet() || val.Type() != tJavaScript { - return ValueDecoderError{Name: "BinaryDecodeValue", Types: []reflect.Type{tJavaScript}, Received: val} - } - - if vr.Type() != bsontype.JavaScript { - return fmt.Errorf("cannot decode %v into a primitive.JavaScript", vr.Type()) - } - - js, err := vr.ReadJavascript() - if err != nil { - return err - } - - val.SetString(js) - return nil -} - -// SymbolDecodeValue is the ValueDecoderFunc for the primitive.Symbol type. -func (DefaultValueDecoders) SymbolDecodeValue(dctx DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error { - if !val.CanSet() || val.Type() != tSymbol { - return ValueDecoderError{Name: "BinaryDecodeValue", Types: []reflect.Type{tSymbol}, Received: val} - } - - if vr.Type() != bsontype.Symbol { - return fmt.Errorf("cannot decode %v into a primitive.Symbol", vr.Type()) - } - - symbol, err := vr.ReadSymbol() - if err != nil { - return err - } - - val.SetString(symbol) - return nil -} - -// BinaryDecodeValue is the ValueDecoderFunc for Binary. -func (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} - } - - if vr.Type() != bsontype.Binary { - return fmt.Errorf("cannot decode %v into a Binary", vr.Type()) - } - - data, subtype, err := vr.ReadBinary() - if err != nil { - return err - } - - val.Set(reflect.ValueOf(primitive.Binary{Subtype: subtype, Data: data})) - return nil -} - -// UndefinedDecodeValue is the ValueDecoderFunc for Undefined. -func (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} - } - - if vr.Type() != bsontype.Undefined { - return fmt.Errorf("cannot decode %v into an Undefined", vr.Type()) - } - - val.Set(reflect.ValueOf(primitive.Undefined{})) - return vr.ReadUndefined() -} - -// ObjectIDDecodeValue is the ValueDecoderFunc for primitive.ObjectID. -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} - } - - if vr.Type() != bsontype.ObjectID { - return fmt.Errorf("cannot decode %v into an ObjectID", vr.Type()) - } - oid, err := vr.ReadObjectID() - val.Set(reflect.ValueOf(oid)) - return err -} - -// DateTimeDecodeValue is the ValueDecoderFunc for DateTime. -func (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} - } - - if vr.Type() != bsontype.DateTime { - return fmt.Errorf("cannot decode %v into a DateTime", vr.Type()) - } - - dt, err := vr.ReadDateTime() - if err != nil { - return err - } - - val.Set(reflect.ValueOf(primitive.DateTime(dt))) - return nil -} - -// NullDecodeValue is the ValueDecoderFunc for Null. -func (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} - } - - if vr.Type() != bsontype.Null { - return fmt.Errorf("cannot decode %v into a Null", vr.Type()) - } - - val.Set(reflect.ValueOf(primitive.Null{})) - return vr.ReadNull() -} - -// RegexDecodeValue is the ValueDecoderFunc for Regex. -func (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} - } - - if vr.Type() != bsontype.Regex { - return fmt.Errorf("cannot decode %v into a Regex", vr.Type()) - } - - pattern, options, err := vr.ReadRegex() - if err != nil { - return err - } - - val.Set(reflect.ValueOf(primitive.Regex{Pattern: pattern, Options: options})) - return nil -} - -// DBPointerDecodeValue is the ValueDecoderFunc for DBPointer. -func (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} - } - - if vr.Type() != bsontype.DBPointer { - return fmt.Errorf("cannot decode %v into a DBPointer", vr.Type()) - } - - ns, pointer, err := vr.ReadDBPointer() - if err != nil { - return err - } - - val.Set(reflect.ValueOf(primitive.DBPointer{DB: ns, Pointer: pointer})) - return nil -} - -// TimestampDecodeValue is the ValueDecoderFunc for Timestamp. -func (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} - } - - if vr.Type() != bsontype.Timestamp { - return fmt.Errorf("cannot decode %v into a Timestamp", vr.Type()) - } - - t, incr, err := vr.ReadTimestamp() - if err != nil { - return err - } - - val.Set(reflect.ValueOf(primitive.Timestamp{T: t, I: incr})) - return nil -} - -// MinKeyDecodeValue is the ValueDecoderFunc for MinKey. -func (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} - } - - if vr.Type() != bsontype.MinKey { - return fmt.Errorf("cannot decode %v into a MinKey", vr.Type()) - } - - val.Set(reflect.ValueOf(primitive.MinKey{})) - return vr.ReadMinKey() -} - -// MaxKeyDecodeValue is the ValueDecoderFunc for MaxKey. -func (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} - } - - if vr.Type() != bsontype.MaxKey { - return fmt.Errorf("cannot decode %v into a MaxKey", vr.Type()) - } - - val.Set(reflect.ValueOf(primitive.MaxKey{})) - return vr.ReadMaxKey() -} - -// Decimal128DecodeValue is the ValueDecoderFunc for primitive.Decimal128. -func (dvd DefaultValueDecoders) Decimal128DecodeValue(dctx DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error { - if vr.Type() != bsontype.Decimal128 { - return fmt.Errorf("cannot decode %v into a primitive.Decimal128", vr.Type()) - } - - if !val.CanSet() || val.Type() != tDecimal { - return ValueDecoderError{Name: "Decimal128DecodeValue", Types: []reflect.Type{tDecimal}, Received: val} - } - d128, err := vr.ReadDecimal128() - val.Set(reflect.ValueOf(d128)) - return err -} - -// JSONNumberDecodeValue is the ValueDecoderFunc for json.Number. -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} - } - - switch vr.Type() { - case bsontype.Double: - f64, err := vr.ReadDouble() - if err != nil { - return err - } - val.Set(reflect.ValueOf(json.Number(strconv.FormatFloat(f64, 'g', -1, 64)))) - case bsontype.Int32: - i32, err := vr.ReadInt32() - if err != nil { - return err - } - val.Set(reflect.ValueOf(json.Number(strconv.FormatInt(int64(i32), 10)))) - case bsontype.Int64: - i64, err := vr.ReadInt64() - if err != nil { - return err - } - val.Set(reflect.ValueOf(json.Number(strconv.FormatInt(i64, 10)))) - default: - return fmt.Errorf("cannot decode %v into a json.Number", vr.Type()) - } - - return nil -} - -// URLDecodeValue is the ValueDecoderFunc for url.URL. -func (dvd DefaultValueDecoders) URLDecodeValue(dc DecodeContext, vr bsonrw.ValueReader, val reflect.Value) error { - if vr.Type() != bsontype.String { - return fmt.Errorf("cannot decode %v into a *url.URL", vr.Type()) - } - - str, err := vr.ReadString() - if err != nil { - return err - } - - u, err := url.Parse(str) - if err != nil { - return err - } - - if !val.CanSet() || val.Type() != tURL { - return ValueDecoderError{Name: "URLDecodeValue", Types: []reflect.Type{tURL}, Received: val} - } - - val.Set(reflect.ValueOf(u).Elem()) - return nil -} - -// TimeDecodeValue is the ValueDecoderFunc for time.Time. -func (dvd DefaultValueDecoders) TimeDecodeValue(dc 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. -func (dvd DefaultValueDecoders) ByteSliceDecodeValue(dc 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. -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 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. -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 vr.Type() { - case bsontype.Array: - 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 an array", vr.Type()) - } - - 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", val.Type()) - } - - for idx, elem := range elems { - val.Index(idx).Set(elem) - } - - return nil -} - -// SliceDecodeValue is the ValueDecoderFunc for slice types. -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. -func (dvd DefaultValueDecoders) ValueUnmarshalerDecodeValue(dc 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 they type doesn't implement the interface, a pointer to it must. - } - - t, src, err := bsonrw.Copier{}.CopyValueToBytes(vr) - if err != nil { - return err - } - - fn := val.Convert(tValueUnmarshaler).MethodByName("UnmarshalBSONValue") - errVal := fn.Call([]reflect.Value{reflect.ValueOf(t), reflect.ValueOf(src)})[0] - if !errVal.IsNil() { - return errVal.Interface().(error) - } - return nil -} - -// UnmarshalerDecodeValue is the ValueDecoderFunc for Unmarshaler implementations. -func (dvd DefaultValueDecoders) UnmarshalerDecodeValue(dc 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())) - } - - if !val.Type().Implements(tUnmarshaler) { - if !val.CanAddr() { - return ValueDecoderError{Name: "UnmarshalerDecodeValue", Types: []reflect.Type{tUnmarshaler}, Received: val} - } - val = val.Addr() // If they type doesn't implement the interface, a pointer to it must. - } - - _, src, err := bsonrw.Copier{}.CopyValueToBytes(vr) - if err != nil { - return err - } - - fn := val.Convert(tUnmarshaler).MethodByName("UnmarshalBSON") - errVal := fn.Call([]reflect.Value{reflect.ValueOf(src)})[0] - if !errVal.IsNil() { - return errVal.Interface().(error) - } - return nil -} - -// EmptyInterfaceDecodeValue is the ValueDecoderFunc for interface{}. -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. -func (DefaultValueDecoders) CoreDocumentDecodeValue(dc 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 - } - - for { - vr, err := ar.ReadValue() - if err == bsonrw.ErrEOA { - break - } - if err != nil { - return nil, err - } - - elem := reflect.New(eType).Elem() - - err = decoder.DecodeValue(dc, vr, elem) - if err != nil { - return nil, err - } - elems = append(elems, elem) - } - - return elems, nil -} - -// CodeWithScopeDecodeValue is the ValueDecoderFunc for CodeWithScope. -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} - } - - if vr.Type() != bsontype.CodeWithScope { - return fmt.Errorf("cannot decode %v into a primitive.CodeWithScope", vr.Type()) - } - - code, dr, err := vr.ReadCodeWithScope() - if err != nil { - return err - } - - scope := reflect.New(tD).Elem() - - elems, err := dvd.decodeElemsFromDocumentReader(dc, dr) - if err != nil { - return err - } - - scope.Set(reflect.MakeSlice(tD, 0, len(elems))) - scope.Set(reflect.Append(scope, elems...)) - - val.Set(reflect.ValueOf(primitive.CodeWithScope{Code: primitive.JavaScript(code), Scope: scope.Interface().(primitive.D)})) - 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 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, err - } - - elems = append(elems, reflect.ValueOf(primitive.E{Key: key, Value: val.Interface()})) - } - - return elems, nil -} |