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-rw-r--r--util/glgen/specparser.cpp304
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diff --git a/util/glgen/specparser.cpp b/util/glgen/specparser.cpp
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-/***************************************************************************
-**
-** Copyright (C) 2013 Klaralvdalens Datakonsult AB (KDAB)
-** Contact: http://www.qt-project.org/legal
-**
-** This file is part of the utilities of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL21$
-** 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 Digia. For licensing terms and
-** conditions see http://qt.digia.com/licensing. For further information
-** use the contact form at http://qt.digia.com/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 2.1 or version 3 as published by the Free
-** Software Foundation and appearing in the file LICENSE.LGPLv21 and
-** LICENSE.LGPLv3 included in the packaging of this file. Please review the
-** following information to ensure the GNU Lesser General Public License
-** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
-** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
-**
-** In addition, as a special exception, Digia gives you certain additional
-** rights. These rights are described in the Digia Qt LGPL Exception
-** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "specparser.h"
-
-#include <QDebug>
-#include <QFile>
-#include <QRegExp>
-#include <QStringList>
-#include <QTextStream>
-
-#ifdef SPECPARSER_DEBUG
-#define qSpecParserDebug qDebug
-#else
-#define qSpecParserDebug QT_NO_QDEBUG_MACRO
-#endif
-
-SpecParser::SpecParser()
-{
-}
-
-void SpecParser::parse()
-{
- // Get the mapping form generic types to specific types suitable for use in C-headers
- if (!parseTypeMap())
- return;
-
- // Open up a stream on the actual OpenGL function spec file
- QFile file(m_specFileName);
- if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
- qWarning() << "Failed to open spec file:" << m_specFileName << "Aborting";
- return;
- }
-
- QTextStream stream(&file);
-
- // Extract the info that we need
- parseFunctions(stream);
-}
-
-bool SpecParser::parseTypeMap()
-{
- QFile file(m_typeMapFileName);
- if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
- qWarning() << "Failed to open spec file:" << m_specFileName << "Aborting";
- return false;
- }
-
- QTextStream stream(&file);
-
- static QRegExp typeMapRegExp("([^,]+)\\W+([^,]+)");
-
- while (!stream.atEnd()) {
- QString line = stream.readLine();
-
- if (line.startsWith(QStringLiteral("#")))
- continue;
-
- if (typeMapRegExp.indexIn(line) != -1) {
- QString key = typeMapRegExp.cap(1).simplified();
- QString value = typeMapRegExp.cap(2).simplified();
-
- // Special case for void
- if (value == QStringLiteral("*"))
- value = QStringLiteral("void");
-
- m_typeMap.insert(key, value);
- qSpecParserDebug() << "Found type mapping from" << key << "=>" << value;
- }
- }
-
- return true;
-}
-
-void SpecParser::parseEnums()
-{
-}
-
-void SpecParser::parseFunctions(QTextStream &stream)
-{
- static QRegExp functionRegExp("^(\\w+)\\(.*\\)");
- static QRegExp returnRegExp("^\\treturn\\s+(\\S+)");
- static QRegExp argumentRegExp("param\\s+(\\S+)\\s+(\\S+) (\\S+) (\\S+)");
- static QRegExp versionRegExp("^\\tversion\\s+(\\S+)");
- static QRegExp deprecatedRegExp("^\\tdeprecated\\s+(\\S+)");
- static QRegExp categoryRegExp("^\\tcategory\\s+(\\S+)");
- static QRegExp categoryVersionRegExp("VERSION_(\\d)_(\\d)");
- static QRegExp extToCoreVersionRegExp("passthru:\\s/\\*\\sOpenGL\\s(\\d)\\.(\\d)\\s.*\\sextensions:");
- static QRegExp extToCoreRegExp("passthru:\\s/\\*\\s(ARB_\\S*)\\s.*\\*/");
-
- Function currentFunction;
- VersionProfile currentVersionProfile;
- QString currentCategory;
- bool haveVersionInfo = false;
- bool acceptCurrentFunctionInCore = false;
- bool acceptCurrentFunctionInExtension = false;
-
- QHash<QString, Version> extensionsNowInCore;
- Version extToCoreCurrentVersion;
- int functionCount = 0;
-
- QSet<Version> versions;
-
- while (!stream.atEnd()) {
- QString line = stream.readLine();
- if (line.startsWith("#"))
- continue;
-
- if (functionRegExp.indexIn(line) != -1) {
-
- if (!currentFunction.name.isEmpty()) {
-
- // NB - Special handling!
- // Versions 4.2 and 4.3 (and probably newer) add functionality by
- // subsuming extensions such as ARB_texture_storage. However, some extensions
- // also include functions to interact with the EXT_direct_state_access
- // extension. These functions should be added to the DSA extension rather
- // than the core functionality. The core will already contain non-DSA
- // versions of these functions.
- if (acceptCurrentFunctionInCore && currentFunction.name.endsWith(QStringLiteral("EXT"))) {
- acceptCurrentFunctionInCore = false;
- acceptCurrentFunctionInExtension = true;
- currentCategory = QStringLiteral("EXT_direct_state_access");
- }
-
- // Finish off previous function (if any) by inserting it into the core
- // functionality or extension functionality (or both)
- if (acceptCurrentFunctionInCore) {
- m_functions.insert(currentVersionProfile, currentFunction);
- versions.insert(currentVersionProfile.version);
- }
-
- if (acceptCurrentFunctionInExtension)
- m_extensionFunctions.insert(currentCategory, currentFunction);
- }
-
- // Start a new function
- ++functionCount;
- haveVersionInfo = false;
- acceptCurrentFunctionInCore = true;
- acceptCurrentFunctionInExtension = false;
- currentCategory = QString();
- currentFunction = Function();
-
- // We assume a core function unless we find a deprecated flag (see below)
- currentVersionProfile = VersionProfile();
- currentVersionProfile.profile = VersionProfile::CoreProfile;
-
- // Extract the function name
- QString functionName = functionRegExp.cap(1);
- currentFunction.name = functionName;
- qSpecParserDebug() << "Found function:" << functionName;
-
- } else if (argumentRegExp.indexIn(line) != -1) {
- // Extract info about this function argument
- Argument arg;
- arg.name = argumentRegExp.cap(1);
-
- QString type = argumentRegExp.cap(2); // Lookup in type map
- arg.type = m_typeMap.value(type);
-
- QString direction = argumentRegExp.cap(3);
- if (direction == QStringLiteral("in")) {
- arg.direction = Argument::In;
- } else if (direction == QStringLiteral("out")) {
- arg.direction = Argument::Out;
- } else {
- qWarning() << "Invalid argument direction found:" << direction;
- acceptCurrentFunctionInCore = false;
- }
-
- QString mode = argumentRegExp.cap(4);
- if (mode == QStringLiteral("value")) {
- arg.mode = Argument::Value;
- } else if (mode == QStringLiteral("array")) {
- arg.mode = Argument::Array;
- } else if (mode == QStringLiteral("reference")) {
- arg.mode = Argument::Reference;
- } else {
- qWarning() << "Invalid argument mode found:" << mode;
- acceptCurrentFunctionInCore = false;
- }
-
- qSpecParserDebug() << " argument:" << arg.type << arg.name;
- currentFunction.arguments.append(arg);
-
- } else if (returnRegExp.indexIn(line) != -1) {
- // Lookup the return type from the typemap
- QString returnTypeKey = returnRegExp.cap(1).simplified();
- if (!m_typeMap.contains(returnTypeKey)) {
- qWarning() << "Unknown return type found:" << returnTypeKey;
- acceptCurrentFunctionInCore = false;
- }
- QString returnType = m_typeMap.value(returnTypeKey);
- qSpecParserDebug() << " return type:" << returnType;
- currentFunction.returnType = returnType;
-
- } else if (versionRegExp.indexIn(line) != -1 && !haveVersionInfo) { // Only use version line if no other source
- // Extract the OpenGL version in which this function was introduced
- QString version = versionRegExp.cap(1);
- qSpecParserDebug() << " version:" << version;
- QStringList parts = version.split(QLatin1Char('.'));
- if (parts.size() != 2) {
- qWarning() << "Found invalid version number";
- continue;
- }
- int majorVersion = parts.first().toInt();
- int minorVersion = parts.last().toInt();
- Version v;
- v.major = majorVersion;
- v.minor = minorVersion;
- currentVersionProfile.version = v;
-
- } else if (deprecatedRegExp.indexIn(line) != -1) {
- // Extract the OpenGL version in which this function was deprecated.
- // If it is OpenGL 3.1 then it must be a compatibility profile function
- QString deprecatedVersion = deprecatedRegExp.cap(1).simplified();
- if (deprecatedVersion == QStringLiteral("3.1") && !inDeprecationException(currentFunction.name))
- currentVersionProfile.profile = VersionProfile::CompatibilityProfile;
-
- } else if (categoryRegExp.indexIn(line) != -1) {
- // Extract the category for this function
- QString category = categoryRegExp.cap(1).simplified();
- qSpecParserDebug() << " category:" << category;
-
- if (categoryVersionRegExp.indexIn(category) != -1) {
- // Use the version info in the category in preference to the version
- // entry as this is more applicable and consistent
- int majorVersion = categoryVersionRegExp.cap(1).toInt();
- int minorVersion = categoryVersionRegExp.cap(2).toInt();
-
- Version v;
- v.major = majorVersion;
- v.minor = minorVersion;
- currentVersionProfile.version = v;
- haveVersionInfo = true;
-
- } else {
- // Make a note of the extension name and tag this function as being part of an extension
- qSpecParserDebug() << "Found category =" << category;
- currentCategory = category;
- acceptCurrentFunctionInExtension = true;
-
- // See if this category (extension) is in our set of extensions that
- // have now been folded into the core feature set
- if (extensionsNowInCore.contains(category)) {
- currentVersionProfile.version = extensionsNowInCore.value(category);
- haveVersionInfo = true;
- } else {
- acceptCurrentFunctionInCore = false;
- }
- }
-
- } else if (extToCoreVersionRegExp.indexIn(line) != -1) {
- qSpecParserDebug() << line;
- int majorVersion = extToCoreVersionRegExp.cap(1).toInt();
- int minorVersion = extToCoreVersionRegExp.cap(2).toInt();
- extToCoreCurrentVersion.major = majorVersion;
- extToCoreCurrentVersion.minor = minorVersion;
-
- } else if (extToCoreRegExp.indexIn(line) != -1) {
- QString extension = extToCoreRegExp.cap(1);
- extensionsNowInCore.insert(extension, extToCoreCurrentVersion);
- }
- }
-
- m_versions = versions.toList();
- qSort(m_versions);
-}
-
-bool SpecParser::inDeprecationException(const QString &functionName) const
-{
- return (functionName == QStringLiteral("TexImage3D"));
-}
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