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#ifndef MODORGANIZER_JSON_INCLUDED
#define MODORGANIZER_JSON_INCLUDED
#include <QJsonArray>
#include <QJsonDocument>
#include <QJsonObject>
#include <QJsonValue>
#include <log.h>
namespace json
{
class failed
{};
namespace details
{
QString typeName(const QJsonValue& v)
{
if (v.isUndefined()) {
return "undefined";
} else if (v.isNull()) {
return "null";
} else if (v.isArray()) {
return "an array";
} else if (v.isBool()) {
return "a bool";
} else if (v.isDouble()) {
return "a double";
} else if (v.isObject()) {
return "an object";
} else if (v.isString()) {
return "a string";
} else {
return "an unknown type";
}
}
QString typeName(const QJsonDocument& doc)
{
if (doc.isEmpty()) {
return "empty";
} else if (doc.isNull()) {
return "null";
} else if (doc.isArray()) {
return "an array";
} else if (doc.isObject()) {
return "an object";
} else {
return "an unknown type";
}
}
template <class T>
T convert(const QJsonValue& v) = delete;
template <>
bool convert<bool>(const QJsonValue& v)
{
if (!v.isBool()) {
throw failed();
}
return v.toBool();
}
template <>
QJsonObject convert<QJsonObject>(const QJsonValue& v)
{
if (!v.isObject()) {
throw failed();
}
return v.toObject();
}
template <>
QString convert<QString>(const QJsonValue& v)
{
if (!v.isString()) {
throw failed();
}
return v.toString();
}
template <>
QJsonArray convert<QJsonArray>(const QJsonValue& v)
{
if (!v.isArray()) {
throw failed();
}
return v.toArray();
}
template <>
qint64 convert<qint64>(const QJsonValue& v)
{
if (!v.isDouble()) {
throw failed();
}
return static_cast<qint64>(v.toDouble());
}
} // namespace details
template <class T>
T convert(const QJsonValue& value, const char* what)
{
try {
return details::convert<T>(value);
} catch (failed&) {
MOBase::log::error("'{}' is a {}, not a {}", what, details::typeName(value),
typeid(T).name);
throw;
}
}
template <class T>
T convertWarn(const QJsonValue& value, const char* what, T def = {})
{
try {
return details::convert<T>(value);
} catch (failed&) {
MOBase::log::warn("'{}' is a {}, not a {}", what, details::typeName(value),
typeid(T).name());
return def;
}
}
template <class T>
T get(const QJsonObject& o, const char* e)
{
if (!o.contains(e)) {
MOBase::log::error("property '{}' is missing", e);
throw failed();
}
return convert<T>(o[e], e);
}
template <class T>
T getWarn(const QJsonObject& o, const char* e, T def = {})
{
if (!o.contains(e)) {
MOBase::log::warn("property '{}' is missing", e);
return def;
}
return convertWarn<T>(o[e], e);
}
template <class T>
T getOpt(const QJsonObject& o, const char* e, T def = {})
{
if (!o.contains(e)) {
return def;
}
return convertWarn<T>(o[e], e);
}
template <class Value>
void requireObject(const Value& v, const char* what)
{
if (!v.isObject()) {
MOBase::log::error("{} is {}, not an object", what, details::typeName(v));
throw failed();
}
}
} // namespace json
#endif // MODORGANIZER_JSON_INCLUDED
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