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9fe4437bda
* Use vendored go-swagger * vendor go-swagger * revert un wanteed change * remove un-needed GO111MODULE * Update Makefile Co-Authored-By: techknowlogick <matti@mdranta.net>
101 lines
3.8 KiB
Go
101 lines
3.8 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 bson
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import (
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"bytes"
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"go.mongodb.org/mongo-driver/bson/bsoncodec"
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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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)
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// Unmarshaler is an interface implemented by types that can unmarshal a BSON
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// document representation of themselves. The BSON bytes can be assumed to be
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// valid. UnmarshalBSON must copy the BSON bytes if it wishes to retain the data
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// after returning.
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type Unmarshaler interface {
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UnmarshalBSON([]byte) error
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}
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// ValueUnmarshaler is an interface implemented by types that can unmarshal a
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// BSON value representaiton of themselves. The BSON bytes and type can be
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// assumed to be valid. UnmarshalBSONValue must copy the BSON value bytes if it
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// wishes to retain the data after returning.
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type ValueUnmarshaler interface {
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UnmarshalBSONValue(bsontype.Type, []byte) error
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}
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// Unmarshal parses the BSON-encoded data and stores the result in the value
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// pointed to by val. If val is nil or not a pointer, Unmarshal returns
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// InvalidUnmarshalError.
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func Unmarshal(data []byte, val interface{}) error {
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return UnmarshalWithRegistry(DefaultRegistry, data, val)
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}
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// UnmarshalWithRegistry parses the BSON-encoded data using Registry r and
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// stores the result in the value pointed to by val. If val is nil or not
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// a pointer, UnmarshalWithRegistry returns InvalidUnmarshalError.
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func UnmarshalWithRegistry(r *bsoncodec.Registry, data []byte, val interface{}) error {
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vr := bsonrw.NewBSONDocumentReader(data)
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return unmarshalFromReader(bsoncodec.DecodeContext{Registry: r}, vr, val)
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}
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// UnmarshalWithContext parses the BSON-encoded data using DecodeContext dc and
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// stores the result in the value pointed to by val. If val is nil or not
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// a pointer, UnmarshalWithRegistry returns InvalidUnmarshalError.
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func UnmarshalWithContext(dc bsoncodec.DecodeContext, data []byte, val interface{}) error {
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vr := bsonrw.NewBSONDocumentReader(data)
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return unmarshalFromReader(dc, vr, val)
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}
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// UnmarshalExtJSON parses the extended JSON-encoded data and stores the result
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// in the value pointed to by val. If val is nil or not a pointer, Unmarshal
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// returns InvalidUnmarshalError.
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func UnmarshalExtJSON(data []byte, canonical bool, val interface{}) error {
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return UnmarshalExtJSONWithRegistry(DefaultRegistry, data, canonical, val)
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}
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// UnmarshalExtJSONWithRegistry parses the extended JSON-encoded data using
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// Registry r and stores the result in the value pointed to by val. If val is
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// nil or not a pointer, UnmarshalWithRegistry returns InvalidUnmarshalError.
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func UnmarshalExtJSONWithRegistry(r *bsoncodec.Registry, data []byte, canonical bool, val interface{}) error {
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ejvr, err := bsonrw.NewExtJSONValueReader(bytes.NewReader(data), canonical)
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if err != nil {
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return err
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}
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return unmarshalFromReader(bsoncodec.DecodeContext{Registry: r}, ejvr, val)
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}
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// UnmarshalExtJSONWithContext parses the extended JSON-encoded data using
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// DecodeContext dc and stores the result in the value pointed to by val. If val is
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// nil or not a pointer, UnmarshalWithRegistry returns InvalidUnmarshalError.
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func UnmarshalExtJSONWithContext(dc bsoncodec.DecodeContext, data []byte, canonical bool, val interface{}) error {
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ejvr, err := bsonrw.NewExtJSONValueReader(bytes.NewReader(data), canonical)
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if err != nil {
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return err
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}
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return unmarshalFromReader(dc, ejvr, val)
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}
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func unmarshalFromReader(dc bsoncodec.DecodeContext, vr bsonrw.ValueReader, val interface{}) error {
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dec := decPool.Get().(*Decoder)
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defer decPool.Put(dec)
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err := dec.Reset(vr)
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if err != nil {
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return err
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}
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err = dec.SetContext(dc)
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if err != nil {
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return err
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}
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return dec.Decode(val)
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}
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