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64 lines
2.1 KiB
64 lines
2.1 KiB
// 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 bsonrw
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import (
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"go.mongodb.org/mongo-driver/bson/bsontype"
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"go.mongodb.org/mongo-driver/bson/primitive"
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)
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// ArrayReader is implemented by types that allow reading values from a BSON
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// array.
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type ArrayReader interface {
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ReadValue() (ValueReader, error)
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}
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// DocumentReader is implemented by types that allow reading elements from a
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// BSON document.
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type DocumentReader interface {
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ReadElement() (string, ValueReader, error)
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}
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// ValueReader is a generic interface used to read values from BSON. This type
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// is implemented by several types with different underlying representations of
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// BSON, such as a bson.Document, raw BSON bytes, or extended JSON.
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type ValueReader interface {
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Type() bsontype.Type
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Skip() error
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ReadArray() (ArrayReader, error)
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ReadBinary() (b []byte, btype byte, err error)
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ReadBoolean() (bool, error)
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ReadDocument() (DocumentReader, error)
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ReadCodeWithScope() (code string, dr DocumentReader, err error)
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ReadDBPointer() (ns string, oid primitive.ObjectID, err error)
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ReadDateTime() (int64, error)
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ReadDecimal128() (primitive.Decimal128, error)
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ReadDouble() (float64, error)
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ReadInt32() (int32, error)
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ReadInt64() (int64, error)
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ReadJavascript() (code string, err error)
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ReadMaxKey() error
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ReadMinKey() error
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ReadNull() error
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ReadObjectID() (primitive.ObjectID, error)
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ReadRegex() (pattern, options string, err error)
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ReadString() (string, error)
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ReadSymbol() (symbol string, err error)
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ReadTimestamp() (t, i uint32, err error)
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ReadUndefined() error
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}
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// BytesReader is a generic interface used to read BSON bytes from a
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// ValueReader. This imterface is meant to be a superset of ValueReader, so that
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// types that implement ValueReader may also implement this interface.
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//
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// The bytes of the value will be appended to dst.
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type BytesReader interface {
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ReadValueBytes(dst []byte) (bsontype.Type, []byte, error)
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}
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