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Diffstat (limited to 'src/corelib/serialization/qjsonvalue.h')
| -rw-r--r-- | src/corelib/serialization/qjsonvalue.h | 255 |
1 files changed, 255 insertions, 0 deletions
diff --git a/src/corelib/serialization/qjsonvalue.h b/src/corelib/serialization/qjsonvalue.h new file mode 100644 index 0000000000..96538ebbf9 --- /dev/null +++ b/src/corelib/serialization/qjsonvalue.h @@ -0,0 +1,255 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtCore module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QJSONVALUE_H +#define QJSONVALUE_H + +#include <QtCore/qglobal.h> +#include <QtCore/qstring.h> + +QT_BEGIN_NAMESPACE + +class QDebug; +class QVariant; +class QJsonArray; +class QJsonObject; + +namespace QJsonPrivate { + class Data; + class Base; + class Object; + class Header; + class Array; + class Value; + class Entry; +} + +class Q_CORE_EXPORT QJsonValue +{ +public: + enum Type { + Null = 0x0, + Bool = 0x1, + Double = 0x2, + String = 0x3, + Array = 0x4, + Object = 0x5, + Undefined = 0x80 + }; + + QJsonValue(Type = Null); + QJsonValue(bool b); + QJsonValue(double n); + QJsonValue(int n); + QJsonValue(qint64 n); + QJsonValue(const QString &s); + QJsonValue(QLatin1String s); +#ifndef QT_NO_CAST_FROM_ASCII + inline QT_ASCII_CAST_WARN QJsonValue(const char *s) + : d(nullptr), t(String) { stringDataFromQStringHelper(QString::fromUtf8(s)); } +#endif + QJsonValue(const QJsonArray &a); + QJsonValue(const QJsonObject &o); + + ~QJsonValue(); + + QJsonValue(const QJsonValue &other); + QJsonValue &operator =(const QJsonValue &other); + + QJsonValue(QJsonValue &&other) Q_DECL_NOTHROW + : ui(other.ui), + d(other.d), + t(other.t) + { + other.ui = 0; + other.d = nullptr; + other.t = Null; + } + + QJsonValue &operator =(QJsonValue &&other) Q_DECL_NOTHROW + { + swap(other); + return *this; + } + + void swap(QJsonValue &other) Q_DECL_NOTHROW + { + qSwap(ui, other.ui); + qSwap(d, other.d); + qSwap(t, other.t); + } + + static QJsonValue fromVariant(const QVariant &variant); + QVariant toVariant() const; + + Type type() const; + inline bool isNull() const { return type() == Null; } + inline bool isBool() const { return type() == Bool; } + inline bool isDouble() const { return type() == Double; } + inline bool isString() const { return type() == String; } + inline bool isArray() const { return type() == Array; } + inline bool isObject() const { return type() == Object; } + inline bool isUndefined() const { return type() == Undefined; } + + bool toBool(bool defaultValue = false) const; + int toInt(int defaultValue = 0) const; + double toDouble(double defaultValue = 0) const; + QString toString() const; + QString toString(const QString &defaultValue) const; + QJsonArray toArray() const; + QJsonArray toArray(const QJsonArray &defaultValue) const; + QJsonObject toObject() const; + QJsonObject toObject(const QJsonObject &defaultValue) const; + + const QJsonValue operator[](const QString &key) const; + const QJsonValue operator[](QLatin1String key) const; + const QJsonValue operator[](int i) const; + + bool operator==(const QJsonValue &other) const; + bool operator!=(const QJsonValue &other) const; + +private: + // avoid implicit conversions from char * to bool + inline QJsonValue(const void *) {} + friend class QJsonPrivate::Value; + friend class QJsonArray; + friend class QJsonObject; + friend Q_CORE_EXPORT QDebug operator<<(QDebug, const QJsonValue &); + + QJsonValue(QJsonPrivate::Data *d, QJsonPrivate::Base *b, const QJsonPrivate::Value& v); + void stringDataFromQStringHelper(const QString &string); + + void detach(); + + union { + quint64 ui; + bool b; + double dbl; + QStringData *stringData; + QJsonPrivate::Base *base; + }; + QJsonPrivate::Data *d; // needed for Objects and Arrays + Type t; +}; + +class Q_CORE_EXPORT QJsonValueRef +{ +public: + QJsonValueRef(QJsonArray *array, int idx) + : a(array), is_object(false), index(idx) {} + QJsonValueRef(QJsonObject *object, int idx) + : o(object), is_object(true), index(idx) {} + + inline operator QJsonValue() const { return toValue(); } + QJsonValueRef &operator = (const QJsonValue &val); + QJsonValueRef &operator = (const QJsonValueRef &val); + + QVariant toVariant() const; + inline QJsonValue::Type type() const { return toValue().type(); } + inline bool isNull() const { return type() == QJsonValue::Null; } + inline bool isBool() const { return type() == QJsonValue::Bool; } + inline bool isDouble() const { return type() == QJsonValue::Double; } + inline bool isString() const { return type() == QJsonValue::String; } + inline bool isArray() const { return type() == QJsonValue::Array; } + inline bool isObject() const { return type() == QJsonValue::Object; } + inline bool isUndefined() const { return type() == QJsonValue::Undefined; } + + inline bool toBool() const { return toValue().toBool(); } + inline int toInt() const { return toValue().toInt(); } + inline double toDouble() const { return toValue().toDouble(); } + inline QString toString() const { return toValue().toString(); } + QJsonArray toArray() const; + QJsonObject toObject() const; + + // ### Qt 6: Add default values + inline bool toBool(bool defaultValue) const { return toValue().toBool(defaultValue); } + inline int toInt(int defaultValue) const { return toValue().toInt(defaultValue); } + inline double toDouble(double defaultValue) const { return toValue().toDouble(defaultValue); } + inline QString toString(const QString &defaultValue) const { return toValue().toString(defaultValue); } + + inline bool operator==(const QJsonValue &other) const { return toValue() == other; } + inline bool operator!=(const QJsonValue &other) const { return toValue() != other; } + +private: + QJsonValue toValue() const; + + union { + QJsonArray *a; + QJsonObject *o; + }; + uint is_object : 1; + uint index : 31; +}; + +#ifndef Q_QDOC +// ### Qt 6: Get rid of these fake pointer classes +class QJsonValuePtr +{ + QJsonValue value; +public: + explicit QJsonValuePtr(const QJsonValue& val) + : value(val) {} + + QJsonValue& operator*() { return value; } + QJsonValue* operator->() { return &value; } +}; + +class QJsonValueRefPtr +{ + QJsonValueRef valueRef; +public: + QJsonValueRefPtr(QJsonArray *array, int idx) + : valueRef(array, idx) {} + QJsonValueRefPtr(QJsonObject *object, int idx) + : valueRef(object, idx) {} + + QJsonValueRef& operator*() { return valueRef; } + QJsonValueRef* operator->() { return &valueRef; } +}; +#endif + +Q_DECLARE_SHARED_NOT_MOVABLE_UNTIL_QT6(QJsonValue) + +#if !defined(QT_NO_DEBUG_STREAM) && !defined(QT_JSON_READONLY) +Q_CORE_EXPORT QDebug operator<<(QDebug, const QJsonValue &); +#endif + +QT_END_NAMESPACE + +#endif // QJSONVALUE_H |