/usr/include/rocksdb/utilities/json_document.h is in librocksdb-dev 4.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 | // Copyright (c) 2013, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in the
// LICENSE file in the root directory of this source tree. An additional grant
// of patent rights can be found in the PATENTS file in the same directory.
#pragma once
#ifndef ROCKSDB_LITE
#include <deque>
#include <map>
#include <memory>
#include <string>
#include <unordered_map>
#include <utility>
#include <vector>
#include "rocksdb/slice.h"
// We use JSONDocument for DocumentDB API
// Implementation inspired by folly::dynamic, rapidjson and fbson
namespace fbson {
class FbsonValue;
class ObjectVal;
template <typename T>
class FbsonWriterT;
class FbsonOutStream;
typedef FbsonWriterT<FbsonOutStream> FbsonWriter;
} // namespace fbson
namespace rocksdb {
// NOTE: none of this is thread-safe
class JSONDocument {
public:
// return nullptr on parse failure
static JSONDocument* ParseJSON(const char* json);
enum Type {
kNull,
kArray,
kBool,
kDouble,
kInt64,
kObject,
kString,
};
/* implicit */ JSONDocument(); // null
/* implicit */ JSONDocument(bool b);
/* implicit */ JSONDocument(double d);
/* implicit */ JSONDocument(int8_t i);
/* implicit */ JSONDocument(int16_t i);
/* implicit */ JSONDocument(int32_t i);
/* implicit */ JSONDocument(int64_t i);
/* implicit */ JSONDocument(const std::string& s);
/* implicit */ JSONDocument(const char* s);
// constructs JSONDocument of specific type with default value
explicit JSONDocument(Type _type);
JSONDocument(const JSONDocument& json_document);
JSONDocument(JSONDocument&& json_document);
Type type() const;
// REQUIRES: IsObject()
bool Contains(const std::string& key) const;
// REQUIRES: IsObject()
// Returns non-owner object
JSONDocument operator[](const std::string& key) const;
// REQUIRES: IsArray() == true || IsObject() == true
size_t Count() const;
// REQUIRES: IsArray()
// Returns non-owner object
JSONDocument operator[](size_t i) const;
JSONDocument& operator=(JSONDocument jsonDocument);
bool IsNull() const;
bool IsArray() const;
bool IsBool() const;
bool IsDouble() const;
bool IsInt64() const;
bool IsObject() const;
bool IsString() const;
// REQUIRES: IsBool() == true
bool GetBool() const;
// REQUIRES: IsDouble() == true
double GetDouble() const;
// REQUIRES: IsInt64() == true
int64_t GetInt64() const;
// REQUIRES: IsString() == true
std::string GetString() const;
bool operator==(const JSONDocument& rhs) const;
bool operator!=(const JSONDocument& rhs) const;
JSONDocument Copy() const;
bool IsOwner() const;
std::string DebugString() const;
private:
class ItemsIteratorGenerator;
public:
// REQUIRES: IsObject()
ItemsIteratorGenerator Items() const;
// appends serialized object to dst
void Serialize(std::string* dst) const;
// returns nullptr if Slice doesn't represent valid serialized JSONDocument
static JSONDocument* Deserialize(const Slice& src);
private:
friend class JSONDocumentBuilder;
JSONDocument(fbson::FbsonValue* val, bool makeCopy);
void InitFromValue(const fbson::FbsonValue* val);
// iteration on objects
class const_item_iterator {
private:
class Impl;
public:
typedef std::pair<std::string, JSONDocument> value_type;
explicit const_item_iterator(Impl* impl);
const_item_iterator(const_item_iterator&&);
const_item_iterator& operator++();
bool operator!=(const const_item_iterator& other);
value_type operator*();
~const_item_iterator();
private:
friend class ItemsIteratorGenerator;
std::unique_ptr<Impl> it_;
};
class ItemsIteratorGenerator {
public:
explicit ItemsIteratorGenerator(const fbson::ObjectVal& object);
const_item_iterator begin() const;
const_item_iterator end() const;
private:
const fbson::ObjectVal& object_;
};
std::unique_ptr<char[]> data_;
mutable fbson::FbsonValue* value_;
// Our serialization format's first byte specifies the encoding version. That
// way, we can easily change our format while providing backwards
// compatibility. This constant specifies the current version of the
// serialization format
static const char kSerializationFormatVersion;
};
class JSONDocumentBuilder {
public:
JSONDocumentBuilder();
explicit JSONDocumentBuilder(fbson::FbsonOutStream* out);
void Reset();
bool WriteStartArray();
bool WriteEndArray();
bool WriteStartObject();
bool WriteEndObject();
bool WriteKeyValue(const std::string& key, const JSONDocument& value);
bool WriteJSONDocument(const JSONDocument& value);
JSONDocument GetJSONDocument();
~JSONDocumentBuilder();
private:
std::unique_ptr<fbson::FbsonWriter> writer_;
};
} // namespace rocksdb
#endif // ROCKSDB_LITE
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