diff options
Diffstat (limited to 'src/corelib/serialization/qjsoncbor.cpp')
| -rw-r--r-- | src/corelib/serialization/qjsoncbor.cpp | 187 |
1 files changed, 113 insertions, 74 deletions
diff --git a/src/corelib/serialization/qjsoncbor.cpp b/src/corelib/serialization/qjsoncbor.cpp index 8bb04fa3bf..da07eca8a7 100644 --- a/src/corelib/serialization/qjsoncbor.cpp +++ b/src/corelib/serialization/qjsoncbor.cpp @@ -1,41 +1,5 @@ -/**************************************************************************** -** -** Copyright (C) 2020 Intel Corporation. -** 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. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ +// Copyright (C) 2020 Intel Corporation. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only #include "qcborvalue.h" #include "qcborvalue_p.h" @@ -48,6 +12,9 @@ #include "qjsondocument.h" #include "qjson_p.h" +#include <qmap.h> +#include <qhash.h> + #include <private/qnumeric_p.h> #include <quuid.h> @@ -55,6 +22,8 @@ QT_BEGIN_NAMESPACE using namespace QtCbor; +enum class ConversionMode { FromRaw, FromVariantToJson }; + static QJsonValue fpToJson(double v) { return qt_is_finite(v) ? QJsonValue(v) : QJsonValue(); @@ -89,13 +58,13 @@ static QString encodeByteArray(const QCborContainerPrivate *d, qsizetype idx, QC return QString::fromLatin1(data, data.size()); } -static QString makeString(const QCborContainerPrivate *d, qsizetype idx); +static QString makeString(const QCborContainerPrivate *d, qsizetype idx, + ConversionMode mode = ConversionMode::FromRaw); static QString maybeEncodeTag(const QCborContainerPrivate *d) { qint64 tag = d->elements.at(0).value; const Element &e = d->elements.at(1); - const ByteData *b = d->byteData(e); switch (tag) { case qint64(QCborKnownTags::DateTimeString): @@ -112,8 +81,12 @@ static QString maybeEncodeTag(const QCborContainerPrivate *d) break; case qint64(QCborKnownTags::Uuid): - if (e.type == QCborValue::ByteArray && b->len == sizeof(QUuid)) +#ifndef QT_BOOTSTRAPPED + if (const ByteData *b = d->byteData(e); e.type == QCborValue::ByteArray && b + && b->len == sizeof(QUuid)) return QUuid::fromRfc4122(b->asByteArrayView()).toString(QUuid::WithoutBraces); +#endif + break; } // don't know what to do, bail out @@ -134,7 +107,8 @@ static QString encodeTag(const QCborContainerPrivate *d) return s; } -static Q_NEVER_INLINE QString makeString(const QCborContainerPrivate *d, qsizetype idx) +static Q_NEVER_INLINE QString makeString(const QCborContainerPrivate *d, qsizetype idx, + ConversionMode mode) { const auto &e = d->elements.at(idx); @@ -146,7 +120,9 @@ static Q_NEVER_INLINE QString makeString(const QCborContainerPrivate *d, qsizety return QString::number(e.fpvalue()); case QCborValue::ByteArray: - return encodeByteArray(d, idx, QCborTag(QCborKnownTags::ExpectedBase64url)); + return mode == ConversionMode::FromVariantToJson + ? d->stringAt(idx) + : encodeByteArray(d, idx, QCborTag(QCborKnownTags::ExpectedBase64url)); case QCborValue::String: return d->stringAt(idx); @@ -190,19 +166,23 @@ static Q_NEVER_INLINE QString makeString(const QCborContainerPrivate *d, qsizety return simpleTypeString(e.type); } -QJsonValue qt_convertToJson(QCborContainerPrivate *d, qsizetype idx); +QJsonValue qt_convertToJson(QCborContainerPrivate *d, qsizetype idx, + ConversionMode mode = ConversionMode::FromRaw); static QJsonValue convertExtendedTypeToJson(QCborContainerPrivate *d) { -#ifndef QT_BUILD_QMAKE qint64 tag = d->elements.at(0).value; switch (tag) { case qint64(QCborKnownTags::Url): - // use the fullly-encoded URL form +#ifdef QT_BOOTSTRAPPED + break; +#else + // use the fully-encoded URL form if (d->elements.at(1).type == QCborValue::String) return QUrl::fromEncoded(d->byteData(1)->asByteArrayView()).toString(QUrl::FullyEncoded); Q_FALLTHROUGH(); +#endif case qint64(QCborKnownTags::DateTimeString): case qint64(QCborKnownTags::ExpectedBase64url): @@ -215,42 +195,43 @@ static QJsonValue convertExtendedTypeToJson(QCborContainerPrivate *d) return s; } } -#endif // for all other tags, ignore it and return the converted tagged item return qt_convertToJson(d, 1); } // We need to do this because sub-objects may need conversion. -static QJsonArray convertToJsonArray(QCborContainerPrivate *d) +static QJsonArray convertToJsonArray(QCborContainerPrivate *d, + ConversionMode mode = ConversionMode::FromRaw) { QJsonArray a; if (d) { for (qsizetype idx = 0; idx < d->elements.size(); ++idx) - a.append(qt_convertToJson(d, idx)); + a.append(qt_convertToJson(d, idx, mode)); } return a; } // We need to do this because the keys need to be sorted and converted to strings // and sub-objects may need recursive conversion. -static QJsonObject convertToJsonObject(QCborContainerPrivate *d) +static QJsonObject convertToJsonObject(QCborContainerPrivate *d, + ConversionMode mode = ConversionMode::FromRaw) { QJsonObject o; if (d) { for (qsizetype idx = 0; idx < d->elements.size(); idx += 2) - o.insert(makeString(d, idx), qt_convertToJson(d, idx + 1)); + o.insert(makeString(d, idx), qt_convertToJson(d, idx + 1, mode)); } return o; } -QJsonValue qt_convertToJson(QCborContainerPrivate *d, qsizetype idx) +QJsonValue qt_convertToJson(QCborContainerPrivate *d, qsizetype idx, ConversionMode mode) { // encoding the container itself if (idx == -QCborValue::Array) - return convertToJsonArray(d); + return convertToJsonArray(d, mode); if (idx == -QCborValue::Map) - return convertToJsonObject(d); + return convertToJsonObject(d, mode); if (idx < 0) { // tag-like type if (!d || d->elements.size() != 2) @@ -264,6 +245,15 @@ QJsonValue qt_convertToJson(QCborContainerPrivate *d, qsizetype idx) case QCborValue::Integer: return QJsonValue(e.value); case QCborValue::ByteArray: + if (mode == ConversionMode::FromVariantToJson) { + const auto value = makeString(d, idx, mode); + return value.isEmpty() ? QJsonValue() : QJsonPrivate::Value::fromTrustedCbor(value); + } + break; + case QCborValue::RegularExpression: + if (mode == ConversionMode::FromVariantToJson) + return QJsonValue(); + break; case QCborValue::String: case QCborValue::SimpleType: // make string @@ -274,10 +264,10 @@ QJsonValue qt_convertToJson(QCborContainerPrivate *d, qsizetype idx) case QCborValue::Tag: case QCborValue::DateTime: case QCborValue::Url: - case QCborValue::RegularExpression: case QCborValue::Uuid: // recurse - return qt_convertToJson(e.flags & Element::IsContainer ? e.container : nullptr, -e.type); + return qt_convertToJson(e.flags & Element::IsContainer ? e.container : nullptr, -e.type, + mode); case QCborValue::Null: case QCborValue::Undefined: @@ -294,7 +284,7 @@ QJsonValue qt_convertToJson(QCborContainerPrivate *d, qsizetype idx) return fpToJson(e.fpvalue()); } - return QJsonPrivate::Value::fromTrustedCbor(makeString(d, idx)); + return QJsonPrivate::Value::fromTrustedCbor(makeString(d, idx, mode)); } /*! @@ -408,10 +398,12 @@ QJsonValue QCborValue::toJsonValue() const return QJsonPrivate::Value::fromTrustedCbor(simpleTypeString(type())); } +#if QT_VERSION < QT_VERSION_CHECK(7, 0, 0) && !defined(QT_BOOTSTRAPPED) QJsonValue QCborValueRef::toJsonValue() const { return qt_convertToJson(d, i); } +#endif /*! Recursively converts every \l QCborValue element in this array to JSON @@ -429,6 +421,14 @@ QJsonArray QCborArray::toJsonArray() const return convertToJsonArray(d.data()); } +#ifndef QT_NO_VARIANT +QJsonArray QJsonPrivate::Variant::toJsonArray(const QVariantList &list) +{ + const auto cborArray = QCborArray::fromVariantList(list); + return convertToJsonArray(cborArray.d.data(), ConversionMode::FromVariantToJson); +} +#endif // !QT_NO_VARIANT + /*! Recursively converts every \l QCborValue value in this map to JSON using QCborValue::toJsonValue() and creates a string key for all keys that aren't @@ -471,6 +471,13 @@ QJsonObject QCborMap::toJsonObject() const return convertToJsonObject(d.data()); } +#ifndef QT_NO_VARIANT +QJsonObject QJsonPrivate::Variant::toJsonObject(const QVariantMap &map) +{ + const auto cborMap = QCborMap::fromVariantMap(map); + return convertToJsonObject(cborMap.d.data(), ConversionMode::FromVariantToJson); +} + /*! Converts this value to a native Qt type and returns the corresponding QVariant. @@ -552,15 +559,15 @@ QVariant QCborValue::toVariant() const #ifndef QT_BOOTSTRAPPED case Url: return toUrl(); -#endif -#if QT_CONFIG(regularexpression) +# if QT_CONFIG(regularexpression) case RegularExpression: return toRegularExpression(); -#endif +# endif case Uuid: return toUuid(); +#endif case Invalid: return QVariant(); @@ -572,9 +579,9 @@ QVariant QCborValue::toVariant() const if (isSimpleType()) return QVariant::fromValue(toSimpleType()); - Q_UNREACHABLE(); - return QVariant(); + Q_UNREACHABLE_RETURN(QVariant()); } +#endif // !QT_NO_VARIANT /*! Converts the JSON value contained in \a v into its corresponding CBOR value @@ -610,7 +617,7 @@ QCborValue QCborValue::fromJsonValue(const QJsonValue &v) case QJsonValue::Bool: return v.toBool(); case QJsonValue::Double: { - if (v.t == Integer) + if (v.value.t == Integer) return v.toInteger(); return v.toDouble(); } @@ -628,11 +635,12 @@ QCborValue QCborValue::fromJsonValue(const QJsonValue &v) return QCborValue(); } +#ifndef QT_NO_VARIANT static void appendVariant(QCborContainerPrivate *d, const QVariant &variant) { // Handle strings and byte arrays directly, to avoid creating a temporary // dummy container to hold their data. - int type = variant.userType(); + int type = variant.metaType().id(); if (type == QMetaType::QString) { d->append(variant.toString()); } else if (type == QMetaType::QByteArray) { @@ -679,21 +687,26 @@ static void appendVariant(QCborContainerPrivate *d, const QVariant &variant) \row \li \l QUuid \li Uuid \endtable - For any other types, this function will return Null if the QVariant itself - is null, and otherwise will try to convert to string using - QVariant::toString(). If the conversion to string fails, this function - returns Undefined. + If QVariant::isNull() returns true, a null QCborValue is returned or + inserted into the list or object, regardless of the type carried by + QVariant. Note the behavior change in Qt 6.0 affecting QVariant::isNull() + also affects this function. + + For other types not listed above, a conversion to string will be attempted, + usually but not always by calling QVariant::toString(). If the conversion + fails the value is replaced by an Undefined CBOR value. Note that + QVariant::toString() is also lossy for the majority of types. Please note that the conversions via QVariant::toString() are subject to - change at any time. QCborValue may be extended in the future to support - more types, which will result in a change in how this function performs - conversions. + change at any time. Both QVariant and QCborValue may be extended in the + future to support more types, which will result in a change in how this + function performs conversions. - \sa toVariant(), fromJsonValue(), QCborArray::toVariantList(), QCborMap::toVariantMap() + \sa toVariant(), fromJsonValue(), QCborArray::toVariantList(), QCborMap::toVariantMap(), QJsonValue::fromVariant() */ QCborValue QCborValue::fromVariant(const QVariant &variant) { - switch (variant.userType()) { + switch (variant.metaType().id()) { case QMetaType::UnknownType: return {}; case QMetaType::Nullptr: @@ -724,9 +737,9 @@ QCborValue QCborValue::fromVariant(const QVariant &variant) #ifndef QT_BOOTSTRAPPED case QMetaType::QUrl: return QCborValue(variant.toUrl()); -#endif case QMetaType::QUuid: return QCborValue(variant.toUuid()); +#endif case QMetaType::QVariantList: return QCborArray::fromVariantList(variant.toList()); case QMetaType::QVariantMap: @@ -823,6 +836,7 @@ QCborArray QCborArray::fromVariantList(const QVariantList &list) appendVariant(a.d.data(), v); return a; } +#endif // !QT_NO_VARIANT /*! Converts all JSON items found in the \a array array to CBOR using @@ -843,6 +857,19 @@ QCborArray QCborArray::fromJsonArray(const QJsonArray &array) } /*! + \overload + \since 6.3 + */ +QCborArray QCborArray::fromJsonArray(QJsonArray &&array) noexcept +{ + QCborArray result; + result.d = std::exchange(array.a, {}); + return result; + +} + +#ifndef QT_NO_VARIANT +/*! Converts the CBOR values to QVariant using QCborValue::toVariant() and "stringifies" all the CBOR keys in this map, returning the QVariantMap that results from that association list. @@ -938,6 +965,7 @@ QCborMap QCborMap::fromVariantHash(const QVariantHash &hash) } return m; } +#endif // !QT_NO_VARIANT /*! Converts all JSON items found in the \a obj object to CBOR using @@ -956,4 +984,15 @@ QCborMap QCborMap::fromJsonObject(const QJsonObject &obj) return result; } +/*! + \overload + \since 6.3 + */ +QCborMap QCborMap::fromJsonObject(QJsonObject &&obj) noexcept +{ + QCborMap result; + result.d = std::exchange(obj.o, {}); + return result; +} + QT_END_NAMESPACE |