diff options
| author | Friedemann Kleint <Friedemann.Kleint@qt.io> | 2021-05-27 09:56:14 +0200 |
|---|---|---|
| committer | Friedemann Kleint <Friedemann.Kleint@qt.io> | 2021-06-09 17:05:15 +0200 |
| commit | 77669e48fd8ac0f4ca199173672c4bf0c9dc654b (patch) | |
| tree | 21fff398ab240732a66ac9d2cb54f1b897420961 /sources/shiboken6/ApiExtractor/conditionalstreamreader.cpp | |
| parent | 371b248a98b4fcb3439cf4d5385c8d299a8635d0 (diff) | |
Introduce conditional processing instructions to typesystem XML
Add ConditionalStreamReader as replacement for QXmlStreamReader,
handling Processing Instructions to exclude/include sections depending
on keywords.
Task-number: PYSIDE-802
Task-number: PYSIDE-1568
Change-Id: I1e2151849e79189943f49313137879bbf6ba3665
Reviewed-by: Christian Tismer <tismer@stackless.com>
Diffstat (limited to 'sources/shiboken6/ApiExtractor/conditionalstreamreader.cpp')
| -rw-r--r-- | sources/shiboken6/ApiExtractor/conditionalstreamreader.cpp | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/sources/shiboken6/ApiExtractor/conditionalstreamreader.cpp b/sources/shiboken6/ApiExtractor/conditionalstreamreader.cpp new file mode 100644 index 000000000..2380ee892 --- /dev/null +++ b/sources/shiboken6/ApiExtractor/conditionalstreamreader.cpp @@ -0,0 +1,122 @@ +/**************************************************************************** +** +** Copyright (C) 2021 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of Qt for Python. +** +** $QT_BEGIN_LICENSE:GPL-EXCEPT$ +** 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 General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3 as published by the Free Software +** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT +** 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-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "conditionalstreamreader.h" + +#include <QtCore/QDebug> + +QXmlStreamReader::TokenType ConditionalStreamReader::readNext() +{ + auto exToken = readNextInternal(); + if (exToken.second != PiTokens::If || conditionMatches()) + return exToken.first; + + // Condition does not match - search for endif + int nestingLevel = 1; + while (true) { + exToken = readNextInternal(); + if (exToken.first == QXmlStreamReader::NoToken + || exToken.first == QXmlStreamReader::Invalid + || exToken.first == QXmlStreamReader::EndDocument) { + break; + } + + if (exToken.second == PiTokens::If) + ++nestingLevel; + else if (exToken.second == PiTokens::Endif && --nestingLevel == 0) + break; + } + return exToken.first; +} + +bool ConditionalStreamReader::conditionMatches() const +{ + const auto keywords = m_reader.processingInstructionData().split(u' ', Qt::SkipEmptyParts); + + bool matches = false; + for (const auto &keyword : keywords) { + if (keyword.startsWith(u'!')) { // exclusion '!windows' takes preference + if (m_conditions.contains(keyword.mid(1))) + return false; + } else { + matches |= m_conditions.contains(keyword); + } + } + return matches; +} + +void ConditionalStreamReader::setConditions(const QStringList &newConditions) +{ + m_conditions = newConditions + platformConditions(); +} + +QStringList ConditionalStreamReader::platformConditions() +{ + QStringList result; +#if defined (Q_OS_UNIX) + result << QStringLiteral("unix"); +#endif + +#if defined (Q_OS_LINUX) + result << QStringLiteral("linux"); +#elif defined (Q_OS_MACOS) + result << QStringLiteral("darwin"); +#elif defined (Q_OS_WINDOWS) + result << QStringLiteral("windows"); +#endif + return result; +} + +ConditionalStreamReader::ExtendedToken ConditionalStreamReader::readNextInternal() +{ + const auto token = m_reader.readNext(); + PiTokens piToken = PiTokens::None; + if (token == QXmlStreamReader::ProcessingInstruction) { + const auto target = m_reader.processingInstructionTarget(); + if (target == u"if") + piToken = PiTokens::If; + else if (target == u"endif") + piToken = PiTokens::Endif; + } + return {token, piToken}; +} + +QDebug operator<<(QDebug dbg, const QXmlStreamAttributes &attrs) +{ + QDebugStateSaver saver(dbg); + dbg.noquote(); + dbg.nospace(); + dbg << "QXmlStreamAttributes("; + for (qsizetype i = 0, size = attrs.size(); i < size; ++i ) { + if (i) + dbg << ", "; + dbg << attrs.at(i).name() << "=\"" << attrs.at(i).value() << '"'; + } + dbg << ')'; + return dbg; +} |