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univalue.cpp
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244 lines (194 loc) · 4.4 KB
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// 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.
#include <stdint.h>
#include <iomanip>
#include <sstream>
#include <stdlib.h>
#include "univalue.h"
const UniValue NullUniValue;
void UniValue::clear()
{
typ = VNULL;
val.clear();
keys.clear();
values.clear();
}
bool UniValue::setNull()
{
clear();
return true;
}
bool UniValue::setBool(bool val_)
{
clear();
typ = VBOOL;
if (val_)
val = "1";
return true;
}
static bool validNumStr(const std::string& s)
{
std::string tokenVal;
unsigned int consumed;
enum jtokentype tt = getJsonToken(tokenVal, consumed, s.data(), s.data() + s.size());
return (tt == JTOK_NUMBER);
}
bool UniValue::setNumStr(const std::string& val_)
{
if (!validNumStr(val_))
return false;
clear();
typ = VNUM;
val = val_;
return true;
}
bool UniValue::setInt(uint64_t val_)
{
std::ostringstream oss;
oss << val_;
return setNumStr(oss.str());
}
bool UniValue::setInt(int64_t val_)
{
std::ostringstream oss;
oss << val_;
return setNumStr(oss.str());
}
bool UniValue::setFloat(double val_)
{
std::ostringstream oss;
oss << std::setprecision(16) << val_;
bool ret = setNumStr(oss.str());
typ = VNUM;
return ret;
}
bool UniValue::setStr(const std::string& val_)
{
clear();
typ = VSTR;
val = val_;
return true;
}
bool UniValue::setArray()
{
clear();
typ = VARR;
return true;
}
bool UniValue::setObject()
{
clear();
typ = VOBJ;
return true;
}
bool UniValue::push_back(const UniValue& val_)
{
if (typ != VARR)
return false;
values.push_back(val_);
return true;
}
bool UniValue::push_backV(const std::vector<UniValue>& vec)
{
if (typ != VARR)
return false;
values.insert(values.end(), vec.begin(), vec.end());
return true;
}
void UniValue::__pushKV(const std::string& key, const UniValue& val_)
{
keys.push_back(key);
values.push_back(val_);
}
bool UniValue::pushKV(const std::string& key, const UniValue& val_)
{
if (typ != VOBJ)
return false;
size_t idx;
if (findKey(key, idx))
values[idx] = val_;
else
__pushKV(key, val_);
return true;
}
bool UniValue::pushKVs(const UniValue& obj)
{
if (typ != VOBJ || obj.typ != VOBJ)
return false;
for (size_t i = 0; i < obj.keys.size(); i++)
__pushKV(obj.keys[i], obj.values.at(i));
return true;
}
void UniValue::getObjMap(std::map<std::string,UniValue>& kv) const
{
if (typ != VOBJ)
return;
kv.clear();
for (size_t i = 0; i < keys.size(); i++)
kv[keys[i]] = values[i];
}
bool UniValue::findKey(const std::string& key, size_t& retIdx) const
{
for (size_t i = 0; i < keys.size(); i++) {
if (keys[i] == key) {
retIdx = i;
return true;
}
}
return false;
}
bool UniValue::checkObject(const std::map<std::string,UniValue::VType>& t) const
{
if (typ != VOBJ) {
return false;
}
for (const auto& object: t) {
size_t idx = 0;
if (!findKey(object.first, idx)) {
return false;
}
if (values.at(idx).getType() != object.second) {
return false;
}
}
return true;
}
const UniValue& UniValue::operator[](const std::string& key) const
{
if (typ != VOBJ)
return NullUniValue;
size_t index = 0;
if (!findKey(key, index))
return NullUniValue;
return values.at(index);
}
const UniValue& UniValue::operator[](size_t index) const
{
if (typ != VOBJ && typ != VARR)
return NullUniValue;
if (index >= values.size())
return NullUniValue;
return values.at(index);
}
const char *uvTypeName(UniValue::VType t)
{
switch (t) {
case UniValue::VNULL: return "null";
case UniValue::VBOOL: return "bool";
case UniValue::VOBJ: return "object";
case UniValue::VARR: return "array";
case UniValue::VSTR: return "string";
case UniValue::VNUM: return "number";
}
// not reached
return nullptr;
}
const UniValue& find_value(const UniValue& obj, const std::string& name)
{
for (unsigned int i = 0; i < obj.keys.size(); i++)
if (obj.keys[i] == name)
return obj.values.at(i);
return NullUniValue;
}