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
196
197
198
199
200
201
202
203
204
205
206
207
208
209
|
// Copyright 2014 BitPay Inc.
// Copyright 2015 Bitcoin Core Developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or https://opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_UNIVALUE_INCLUDE_UNIVALUE_H
#define BITCOIN_UNIVALUE_INCLUDE_UNIVALUE_H
#include <charconv>
#include <cstdint>
#include <cstring>
#include <map>
#include <stdexcept>
#include <string>
#include <type_traits>
#include <vector>
class UniValue {
public:
enum VType { VNULL, VOBJ, VARR, VSTR, VNUM, VBOOL, };
UniValue() { typ = VNULL; }
UniValue(UniValue::VType initialType, const std::string& initialStr = "") {
typ = initialType;
val = initialStr;
}
UniValue(uint64_t val_) {
setInt(val_);
}
UniValue(int64_t val_) {
setInt(val_);
}
UniValue(bool val_) {
setBool(val_);
}
UniValue(int val_) {
setInt(val_);
}
UniValue(double val_) {
setFloat(val_);
}
UniValue(const std::string& val_) {
setStr(val_);
}
UniValue(const char *val_) {
std::string s(val_);
setStr(s);
}
void clear();
bool setNull();
bool setBool(bool val);
bool setNumStr(const std::string& val);
bool setInt(uint64_t val);
bool setInt(int64_t val);
bool setInt(int val_) { return setInt((int64_t)val_); }
bool setFloat(double val);
bool setStr(const std::string& val);
bool setArray();
bool setObject();
enum VType getType() const { return typ; }
const std::string& getValStr() const { return val; }
bool empty() const { return (values.size() == 0); }
size_t size() const { return values.size(); }
bool getBool() const { return isTrue(); }
void getObjMap(std::map<std::string,UniValue>& kv) const;
bool checkObject(const std::map<std::string,UniValue::VType>& memberTypes) const;
const UniValue& operator[](const std::string& key) const;
const UniValue& operator[](size_t index) const;
bool exists(const std::string& key) const { size_t i; return findKey(key, i); }
bool isNull() const { return (typ == VNULL); }
bool isTrue() const { return (typ == VBOOL) && (val == "1"); }
bool isFalse() const { return (typ == VBOOL) && (val != "1"); }
bool isBool() const { return (typ == VBOOL); }
bool isStr() const { return (typ == VSTR); }
bool isNum() const { return (typ == VNUM); }
bool isArray() const { return (typ == VARR); }
bool isObject() const { return (typ == VOBJ); }
void push_back(const UniValue& val);
void push_backV(const std::vector<UniValue>& vec);
template <class It>
void push_backV(It first, It last);
void __pushKV(const std::string& key, const UniValue& val);
void pushKV(const std::string& key, const UniValue& val);
void pushKVs(const UniValue& obj);
std::string write(unsigned int prettyIndent = 0,
unsigned int indentLevel = 0) const;
bool read(const char *raw, size_t len);
bool read(const char *raw) { return read(raw, strlen(raw)); }
bool read(const std::string& rawStr) {
return read(rawStr.data(), rawStr.size());
}
private:
UniValue::VType typ;
std::string val; // numbers are stored as C++ strings
std::vector<std::string> keys;
std::vector<UniValue> values;
bool findKey(const std::string& key, size_t& retIdx) const;
void writeArray(unsigned int prettyIndent, unsigned int indentLevel, std::string& s) const;
void writeObject(unsigned int prettyIndent, unsigned int indentLevel, std::string& s) const;
public:
// Strict type-specific getters, these throw std::runtime_error if the
// value is of unexpected type
const std::vector<std::string>& getKeys() const;
const std::vector<UniValue>& getValues() const;
template <typename Int>
Int getInt() const;
bool get_bool() const;
const std::string& get_str() const;
double get_real() const;
const UniValue& get_obj() const;
const UniValue& get_array() const;
enum VType type() const { return getType(); }
friend const UniValue& find_value( const UniValue& obj, const std::string& name);
};
template <class It>
void UniValue::push_backV(It first, It last)
{
if (typ != VARR) throw std::runtime_error{"JSON value is not an array as expected"};
values.insert(values.end(), first, last);
}
template <typename Int>
Int UniValue::getInt() const
{
static_assert(std::is_integral<Int>::value);
if (typ != VNUM) {
throw std::runtime_error("JSON value is not an integer as expected");
}
Int result;
const auto [first_nonmatching, error_condition] = std::from_chars(val.data(), val.data() + val.size(), result);
if (first_nonmatching != val.data() + val.size() || error_condition != std::errc{}) {
throw std::runtime_error("JSON integer out of range");
}
return result;
}
enum jtokentype {
JTOK_ERR = -1,
JTOK_NONE = 0, // eof
JTOK_OBJ_OPEN,
JTOK_OBJ_CLOSE,
JTOK_ARR_OPEN,
JTOK_ARR_CLOSE,
JTOK_COLON,
JTOK_COMMA,
JTOK_KW_NULL,
JTOK_KW_TRUE,
JTOK_KW_FALSE,
JTOK_NUMBER,
JTOK_STRING,
};
extern enum jtokentype getJsonToken(std::string& tokenVal,
unsigned int& consumed, const char *raw, const char *end);
extern const char *uvTypeName(UniValue::VType t);
static inline bool jsonTokenIsValue(enum jtokentype jtt)
{
switch (jtt) {
case JTOK_KW_NULL:
case JTOK_KW_TRUE:
case JTOK_KW_FALSE:
case JTOK_NUMBER:
case JTOK_STRING:
return true;
default:
return false;
}
// not reached
}
static inline bool json_isspace(int ch)
{
switch (ch) {
case 0x20:
case 0x09:
case 0x0a:
case 0x0d:
return true;
default:
return false;
}
// not reached
}
extern const UniValue NullUniValue;
const UniValue& find_value( const UniValue& obj, const std::string& name);
#endif // BITCOIN_UNIVALUE_INCLUDE_UNIVALUE_H
|
