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NOISSUE Various changes from multiauth that are unrelated to it
This commit is contained in:
Jan Dalheimer
committed by
Petr Mrázek
Petr Mrázek
parent
161dc66c2c
commit
3a8b238052
239
logic/Json.h
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239
logic/Json.h
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// Licensed under the Apache-2.0 license. See README.md for details.
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#pragma once
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#include <QJsonDocument>
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#include <QJsonArray>
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#include <QJsonObject>
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#include <QDateTime>
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#include <QUrl>
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#include <QDir>
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#include <QUuid>
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#include <QVariant>
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#include <memory>
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#include "Exception.h"
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namespace Json
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{
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DECLARE_EXCEPTION(Json);
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enum Requirement
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{
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Required
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};
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void write(const QJsonDocument &doc, const QString &filename);
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void write(const QJsonObject &object, const QString &filename);
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void write(const QJsonArray &array, const QString &filename);
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QByteArray toBinary(const QJsonObject &obj);
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QByteArray toBinary(const QJsonArray &array);
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QByteArray toText(const QJsonObject &obj);
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QByteArray toText(const QJsonArray &array);
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QJsonDocument ensureDocument(const QByteArray &data, const QString &what = "Document");
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QJsonDocument ensureDocument(const QString &filename, const QString &what = "Document");
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QJsonObject ensureObject(const QJsonDocument &doc, const QString &what = "Document");
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QJsonArray ensureArray(const QJsonDocument &doc, const QString &what = "Document");
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/////////////////// WRITING ////////////////////
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void writeString(QJsonObject & to, const QString &key, const QString &value);
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void writeStringList(QJsonObject & to, const QString &key, const QStringList &values);
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template <typename T>
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void writeObjectList(QJsonObject & to, QString key, QList<std::shared_ptr<T>> values)
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{
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if (!values.isEmpty())
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{
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QJsonArray array;
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for (auto value: values)
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{
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array.append(value->toJson());
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}
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to.insert(key, array);
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}
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}
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template <typename T>
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void writeObjectList(QJsonObject & to, QString key, QList<T> values)
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{
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if (!values.isEmpty())
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{
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QJsonArray array;
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for (auto value: values)
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{
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array.append(value.toJson());
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}
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to.insert(key, array);
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}
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}
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template<typename T>
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QJsonValue toJson(const T &t)
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{
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return QJsonValue(t);
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}
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template<>
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QJsonValue toJson<QUrl>(const QUrl &url);
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template<>
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QJsonValue toJson<QByteArray>(const QByteArray &data);
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template<>
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QJsonValue toJson<QDateTime>(const QDateTime &datetime);
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template<>
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QJsonValue toJson<QDir>(const QDir &dir);
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template<>
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QJsonValue toJson<QUuid>(const QUuid &uuid);
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template<>
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QJsonValue toJson<QVariant>(const QVariant &variant);
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template<typename T>
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QJsonArray toJsonArray(const QList<T> &container)
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{
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QJsonArray array;
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for (const T item : container)
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{
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array.append(toJson<T>(item));
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}
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return array;
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}
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////////////////// READING ////////////////////
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template <typename T>
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T ensureIsType(const QJsonValue &value, const Requirement requirement = Required, const QString &what = "Value");
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template<> double ensureIsType<double>(const QJsonValue &value, const Requirement, const QString &what);
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template<> bool ensureIsType<bool>(const QJsonValue &value, const Requirement, const QString &what);
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template<> int ensureIsType<int>(const QJsonValue &value, const Requirement, const QString &what);
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template<> QJsonObject ensureIsType<QJsonObject>(const QJsonValue &value, const Requirement, const QString &what);
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template<> QJsonArray ensureIsType<QJsonArray>(const QJsonValue &value, const Requirement, const QString &what);
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template<> QJsonValue ensureIsType<QJsonValue>(const QJsonValue &value, const Requirement, const QString &what);
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template<> QByteArray ensureIsType<QByteArray>(const QJsonValue &value, const Requirement, const QString &what);
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template<> QDateTime ensureIsType<QDateTime>(const QJsonValue &value, const Requirement, const QString &what);
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template<> QVariant ensureIsType<QVariant>(const QJsonValue &value, const Requirement, const QString &what);
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template<> QString ensureIsType<QString>(const QJsonValue &value, const Requirement, const QString &what);
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template<> QUuid ensureIsType<QUuid>(const QJsonValue &value, const Requirement, const QString &what);
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template<> QDir ensureIsType<QDir>(const QJsonValue &value, const Requirement, const QString &what);
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template<> QUrl ensureIsType<QUrl>(const QJsonValue &value, const Requirement, const QString &what);
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// the following functions are higher level functions, that make use of the above functions for
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// type conversion
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template <typename T>
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T ensureIsType(const QJsonValue &value, const T default_, const QString &what = "Value")
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{
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if (value.isUndefined())
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{
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return default_;
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}
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return ensureIsType<T>(value, Required, what);
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}
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template <typename T>
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T ensureIsType(const QJsonObject &parent, const QString &key,
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const Requirement requirement = Required,
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const QString &what = "__placeholder__")
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{
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const QString localWhat = QString(what).replace("__placeholder__", '\'' + key + '\'');
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if (!parent.contains(key))
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{
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throw JsonException(localWhat + "s parent does not contain " + localWhat);
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}
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return ensureIsType<T>(parent.value(key), requirement, localWhat);
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}
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template <typename T>
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T ensureIsType(const QJsonObject &parent, const QString &key, const T default_,
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const QString &what = "__placeholder__")
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{
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const QString localWhat = QString(what).replace("__placeholder__", '\'' + key + '\'');
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if (!parent.contains(key))
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{
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return default_;
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}
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return ensureIsType<T>(parent.value(key), default_, localWhat);
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}
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template <typename T>
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QList<T> ensureIsArrayOf(const QJsonDocument &doc)
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{
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const QJsonArray array = ensureArray(doc);
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QList<T> out;
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for (const QJsonValue val : array)
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{
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out.append(ensureIsType<T>(val, Required, "Document"));
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}
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return out;
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}
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template <typename T>
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QList<T> ensureIsArrayOf(const QJsonValue &value, const Requirement = Required,
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const QString &what = "Value")
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{
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const QJsonArray array = ensureIsType<QJsonArray>(value, Required, what);
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QList<T> out;
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for (const QJsonValue val : array)
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{
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out.append(ensureIsType<T>(val, Required, what));
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}
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return out;
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}
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template <typename T>
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QList<T> ensureIsArrayOf(const QJsonValue &value, const QList<T> default_,
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const QString &what = "Value")
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{
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if (value.isUndefined())
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{
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return default_;
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}
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return ensureIsArrayOf<T>(value, Required, what);
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}
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template <typename T>
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QList<T> ensureIsArrayOf(const QJsonObject &parent, const QString &key,
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const Requirement requirement = Required,
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const QString &what = "__placeholder__")
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{
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const QString localWhat = QString(what).replace("__placeholder__", '\'' + key + '\'');
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if (!parent.contains(key))
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{
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throw JsonException(localWhat + "s parent does not contain " + localWhat);
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}
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return ensureIsArrayOf<T>(parent.value(key), requirement, localWhat);
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}
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template <typename T>
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QList<T> ensureIsArrayOf(const QJsonObject &parent, const QString &key,
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const QList<T> &default_, const QString &what = "__placeholder__")
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{
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const QString localWhat = QString(what).replace("__placeholder__", '\'' + key + '\'');
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if (!parent.contains(key))
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{
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return default_;
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}
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return ensureIsArrayOf<T>(parent.value(key), default_, localWhat);
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}
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// this macro part could be replaced by variadic functions that just pass on their arguments, but that wouldn't work well with IDE helpers
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#define JSON_HELPERFUNCTIONS(NAME, TYPE) \
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inline TYPE ensure##NAME(const QJsonValue &value, const Requirement requirement = Required, const QString &what = "Value") \
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{ return ensureIsType<TYPE>(value, requirement, what); } \
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inline TYPE ensure##NAME(const QJsonValue &value, const TYPE default_, const QString &what = "Value") \
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{ return ensureIsType<TYPE>(value, default_, what); } \
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inline TYPE ensure##NAME(const QJsonObject &parent, const QString &key, const Requirement requirement = Required, const QString &what = "__placeholder__") \
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{ return ensureIsType<TYPE>(parent, key, requirement, what); } \
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inline TYPE ensure##NAME(const QJsonObject &parent, const QString &key, const TYPE default_, const QString &what = "__placeholder") \
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{ return ensureIsType<TYPE>(parent, key, default_, what); }
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JSON_HELPERFUNCTIONS(Array, QJsonArray)
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JSON_HELPERFUNCTIONS(Object, QJsonObject)
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JSON_HELPERFUNCTIONS(JsonValue, QJsonValue)
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JSON_HELPERFUNCTIONS(String, QString)
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JSON_HELPERFUNCTIONS(Boolean, bool)
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JSON_HELPERFUNCTIONS(Double, double)
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JSON_HELPERFUNCTIONS(Integer, int)
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JSON_HELPERFUNCTIONS(DateTime, QDateTime)
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JSON_HELPERFUNCTIONS(Url, QUrl)
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JSON_HELPERFUNCTIONS(ByteArray, QByteArray)
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JSON_HELPERFUNCTIONS(Dir, QDir)
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JSON_HELPERFUNCTIONS(Uuid, QUuid)
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JSON_HELPERFUNCTIONS(Variant, QVariant)
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#undef JSON_HELPERFUNCTIONS
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}
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using JSONValidationError = Json::JsonException;
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