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diff --git a/src/qdoc/qdoc/src/qdoc/xmlgenerator.cpp b/src/qdoc/qdoc/src/qdoc/xmlgenerator.cpp
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+// Copyright (C) 2019 Thibaut Cuvelier
+// Copyright (C) 2021 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#include "xmlgenerator.h"
+
+#include "enumnode.h"
+#include "examplenode.h"
+#include "functionnode.h"
+#include "qdocdatabase.h"
+#include "typedefnode.h"
+
+using namespace Qt::Literals::StringLiterals;
+
+QT_BEGIN_NAMESPACE
+
+const QRegularExpression XmlGenerator::m_funcLeftParen(QStringLiteral("^\\S+(\\(.*\\))"));
+
+XmlGenerator::XmlGenerator(FileResolver& file_resolver) : Generator(file_resolver) {}
+
+/*!
+ Do not display \brief for QML types, document and collection nodes
+ */
+bool XmlGenerator::hasBrief(const Node *node)
+{
+ return !(node->isQmlType() || node->isPageNode() || node->isCollectionNode());
+}
+
+/*!
+ Determines whether the list atom should be shown with three columns
+ (constant-value-description).
+ */
+bool XmlGenerator::isThreeColumnEnumValueTable(const Atom *atom)
+{
+ while (atom && !(atom->type() == Atom::ListRight && atom->string() == ATOM_LIST_VALUE)) {
+ if (atom->type() == Atom::ListItemLeft && !matchAhead(atom, Atom::ListItemRight))
+ return true;
+ atom = atom->next();
+ }
+ return false;
+}
+
+/*!
+ Determines whether the list atom should be shown with just one column (value).
+ */
+bool XmlGenerator::isOneColumnValueTable(const Atom *atom)
+{
+ if (atom->type() != Atom::ListLeft || atom->string() != ATOM_LIST_VALUE)
+ return false;
+
+ while (atom && atom->type() != Atom::ListTagRight)
+ atom = atom->next();
+
+ if (atom) {
+ if (!matchAhead(atom, Atom::ListItemLeft))
+ return false;
+ if (!atom->next())
+ return false;
+ return matchAhead(atom->next(), Atom::ListItemRight);
+ }
+ return false;
+}
+
+/*!
+ Header offset depending on the type of the node
+ */
+int XmlGenerator::hOffset(const Node *node)
+{
+ switch (node->nodeType()) {
+ case Node::Namespace:
+ case Node::Class:
+ case Node::Struct:
+ case Node::Union:
+ case Node::Module:
+ return 2;
+ case Node::QmlModule:
+ case Node::QmlValueType:
+ case Node::QmlType:
+ case Node::Page:
+ case Node::Group:
+ return 1;
+ case Node::Enum:
+ case Node::TypeAlias:
+ case Node::Typedef:
+ case Node::Function:
+ case Node::Property:
+ default:
+ return 3;
+ }
+}
+
+/*!
+ Rewrites the brief of this node depending on its first word.
+ Only for properties and variables (does nothing otherwise).
+ */
+void XmlGenerator::rewritePropertyBrief(const Atom *atom, const Node *relative)
+{
+ if (relative->nodeType() != Node::Property && relative->nodeType() != Node::Variable)
+ return;
+ atom = atom->next();
+ if (!atom || atom->type() != Atom::String)
+ return;
+
+ const QString firstWord =
+ atom->string().toLower().section(' ', 0, 0, QString::SectionSkipEmpty);
+ const QStringList words{ "the", "a", "an", "whether", "which" };
+ if (words.contains(firstWord)) {
+ QString str = QLatin1String("This ")
+ + QLatin1String(relative->nodeType() == Node::Property ? "property" : "variable")
+ + QLatin1String(" holds ") + atom->string().left(1).toLower()
+ + atom->string().mid(1);
+ const_cast<Atom *>(atom)->setString(str);
+ }
+}
+
+/*!
+ Returns the type of this atom as an enumeration.
+ */
+Node::NodeType XmlGenerator::typeFromString(const Atom *atom)
+{
+ const auto &name = atom->string();
+ if (name.startsWith(QLatin1String("qml")))
+ return Node::QmlModule;
+ else if (name.startsWith(QLatin1String("groups")))
+ return Node::Group;
+ else
+ return Node::Module;
+}
+
+/*!
+ For images shown in examples, set the image file to the one it
+ will have once the documentation is generated.
+ */
+void XmlGenerator::setImageFileName(const Node *relative, const QString &fileName)
+{
+ if (relative->isExample()) {
+ const auto cen = static_cast<const ExampleNode *>(relative);
+ if (cen->imageFileName().isEmpty()) {
+ auto *en = const_cast<ExampleNode *>(cen);
+ en->setImageFileName(fileName);
+ }
+ }
+}
+
+/*!
+ Handles the differences in lists between list tags and since tags, and
+ returns the content of the list entry \a atom (first member of the pair).
+ It also returns the number of items to skip ahead (second member of the pair).
+ */
+std::pair<QString, int> XmlGenerator::getAtomListValue(const Atom *atom)
+{
+ const Atom *lookAhead = atom->next();
+ if (!lookAhead)
+ return std::pair<QString, int>(QString(), 1);
+
+ QString t = lookAhead->string();
+ lookAhead = lookAhead->next();
+ if (!lookAhead || lookAhead->type() != Atom::ListTagRight)
+ return std::pair<QString, int>(QString(), 1);
+
+ lookAhead = lookAhead->next();
+ int skipAhead;
+ if (lookAhead && lookAhead->type() == Atom::SinceTagLeft) {
+ lookAhead = lookAhead->next();
+ Q_ASSERT(lookAhead && lookAhead->type() == Atom::String);
+ t += QLatin1String(" (since ");
+ if (lookAhead->string().at(0).isDigit())
+ t += QLatin1String("Qt ");
+ t += lookAhead->string() + QLatin1String(")");
+ skipAhead = 4;
+ } else {
+ skipAhead = 1;
+ }
+ return std::pair<QString, int>(t, skipAhead);
+}
+
+/*!
+ Parses the table attributes from the given \a atom.
+ This method returns a pair containing the width (%) and
+ the attribute for this table (either "generic" or
+ "borderless").
+ */
+std::pair<QString, QString> XmlGenerator::getTableWidthAttr(const Atom *atom)
+{
+ QString p0, p1;
+ QString attr = "generic";
+ QString width;
+ if (atom->count() > 0) {
+ p0 = atom->string(0);
+ if (atom->count() > 1)
+ p1 = atom->string(1);
+ }
+ if (!p0.isEmpty()) {
+ if (p0 == QLatin1String("borderless"))
+ attr = p0;
+ else if (p0.contains(QLatin1Char('%')))
+ width = p0;
+ }
+ if (!p1.isEmpty()) {
+ if (p1 == QLatin1String("borderless"))
+ attr = p1;
+ else if (p1.contains(QLatin1Char('%')))
+ width = p1;
+ }
+
+ // Many times, in the documentation, there is a space before the % sign:
+ // this breaks the parsing logic above.
+ if (width == QLatin1String("%")) {
+ // The percentage is typically stored in p0, parse it as an int.
+ bool ok = false;
+ int widthPercentage = p0.toInt(&ok);
+ if (ok) {
+ width = QString::number(widthPercentage) + "%";
+ } else {
+ width = {};
+ }
+ }
+
+ return {width, attr};
+}
+
+/*!
+ Registers an anchor reference and returns a unique
+ and cleaned copy of the reference (the one that should be
+ used in the output).
+ To ensure unicity throughout the document, this method
+ uses the \a refMap cache.
+ */
+QString XmlGenerator::registerRef(const QString &ref, bool xmlCompliant)
+{
+ QString cleanRef = Generator::cleanRef(ref, xmlCompliant);
+
+ for (;;) {
+ QString &prevRef = refMap[cleanRef.toLower()];
+ if (prevRef.isEmpty()) {
+ // This reference has never been met before for this document: register it.
+ prevRef = ref;
+ break;
+ } else if (prevRef == ref) {
+ // This exact same reference was already found. This case typically occurs within refForNode.
+ break;
+ }
+ cleanRef += QLatin1Char('x');
+ }
+ return cleanRef;
+}
+
+/*!
+ Generates a clean and unique reference for the given \a node.
+ This reference may depend on the type of the node (typedef,
+ QML signal, etc.)
+ */
+QString XmlGenerator::refForNode(const Node *node)
+{
+ QString ref;
+ switch (node->nodeType()) {
+ case Node::Enum:
+ ref = node->name() + "-enum";
+ break;
+ case Node::Typedef: {
+ const auto *tdf = static_cast<const TypedefNode *>(node);
+ if (tdf->associatedEnum())
+ return refForNode(tdf->associatedEnum());
+ } Q_FALLTHROUGH();
+ case Node::TypeAlias:
+ ref = node->name() + "-typedef";
+ break;
+ case Node::Function: {
+ const auto fn = static_cast<const FunctionNode *>(node);
+ switch (fn->metaness()) {
+ case FunctionNode::QmlSignal:
+ ref = fn->name() + "-signal";
+ break;
+ case FunctionNode::QmlSignalHandler:
+ ref = fn->name() + "-signal-handler";
+ break;
+ case FunctionNode::QmlMethod:
+ ref = fn->name() + "-method";
+ if (fn->overloadNumber() != 0)
+ ref += QLatin1Char('-') + QString::number(fn->overloadNumber());
+ break;
+ default:
+ if (fn->hasOneAssociatedProperty() && fn->doc().isEmpty()) {
+ return refForNode(fn->associatedProperties()[0]);
+ } else {
+ ref = fn->name();
+ if (fn->overloadNumber() != 0)
+ ref += QLatin1Char('-') + QString::number(fn->overloadNumber());
+ }
+ break;
+ }
+ } break;
+ case Node::SharedComment: {
+ if (!node->isPropertyGroup())
+ break;
+ } Q_FALLTHROUGH();
+ case Node::QmlProperty:
+ if (node->isAttached())
+ ref = node->name() + "-attached-prop";
+ else
+ ref = node->name() + "-prop";
+ break;
+ case Node::Property:
+ ref = node->name() + "-prop";
+ break;
+ case Node::Variable:
+ ref = node->name() + "-var";
+ break;
+ default:
+ break;
+ }
+ return registerRef(ref);
+}
+
+/*!
+ Construct the link string for the \a node and return it.
+ The \a relative node is used to decide whether the link
+ we are generating is in the same file as the target.
+ Note the relative node can be 0, which pretty much
+ guarantees that the link and the target aren't in the
+ same file.
+ */
+QString XmlGenerator::linkForNode(const Node *node, const Node *relative)
+{
+ if (node == nullptr)
+ return QString();
+ if (!node->url().isNull())
+ return node->url();
+ if (fileBase(node).isEmpty())
+ return QString();
+ if (node->isPrivate())
+ return QString();
+
+ QString fn = fileName(node);
+ if (node->parent() && node->parent()->isQmlType() && node->parent()->isAbstract()) {
+ if (Generator::qmlTypeContext()) {
+ if (Generator::qmlTypeContext()->inherits(node->parent())) {
+ fn = fileName(Generator::qmlTypeContext());
+ } else if (node->parent()->isInternal() && !noLinkErrors()) {
+ node->doc().location().warning(
+ QStringLiteral("Cannot link to property in internal type '%1'")
+ .arg(node->parent()->name()));
+ return QString();
+ }
+ }
+ }
+
+ QString link = fn;
+
+ if (!node->isPageNode() || node->isPropertyGroup()) {
+ QString ref = refForNode(node);
+ if (relative && fn == fileName(relative) && ref == refForNode(relative))
+ return QString();
+
+ link += QLatin1Char('#');
+ link += ref;
+ }
+
+ /*
+ If the output is going to subdirectories, the
+ two nodes have different output directories if 'node'
+ was read from index.
+ */
+ if (relative && (node != relative)) {
+ if (useOutputSubdirs() && !node->isExternalPage() && node->isIndexNode())
+ link.prepend("../%1/"_L1.arg(node->tree()->physicalModuleName()));
+ }
+ return link;
+}
+
+/*!
+ This function is called for links, i.e. for words that
+ are marked with the qdoc link command. For autolinks
+ that are not marked with the qdoc link command, the
+ getAutoLink() function is called
+
+ It returns the string for a link found by using the data
+ in the \a atom to search the database. It also sets \a node
+ to point to the target node for that link. \a relative points
+ to the node holding the qdoc comment where the link command
+ was found.
+ */
+QString XmlGenerator::getLink(const Atom *atom, const Node *relative, const Node **node)
+{
+ const QString &t = atom->string();
+
+ if (t.isEmpty())
+ return t;
+
+ if (t.at(0) == QChar('h')) {
+ if (t.startsWith("http:") || t.startsWith("https:"))
+ return t;
+ } else if (t.at(0) == QChar('f')) {
+ if (t.startsWith("file:") || t.startsWith("ftp:"))
+ return t;
+ } else if (t.at(0) == QChar('m')) {
+ if (t.startsWith("mailto:"))
+ return t;
+ }
+ return getAutoLink(atom, relative, node);
+}
+
+/*!
+ This function is called for autolinks, i.e. for words that
+ are not marked with the qdoc link command that qdoc has
+ reason to believe should be links.
+
+ It returns the string for a link found by using the data
+ in the \a atom to search the database. It also sets \a node
+ to point to the target node for that link. \a relative points
+ to the node holding the qdoc comment where the link command
+ was found.
+ */
+QString XmlGenerator::getAutoLink(const Atom *atom, const Node *relative, const Node **node,
+ Node::Genus genus)
+{
+ QString ref;
+
+ *node = m_qdb->findNodeForAtom(atom, relative, ref, genus);
+ if (!(*node))
+ return QString();
+
+ QString link = (*node)->url();
+ if (link.isNull()) {
+ link = linkForNode(*node, relative);
+ } else if (link.isEmpty()) {
+ return link; // Explicit empty url (node is ignored as a link target)
+ }
+ if (!ref.isEmpty()) {
+ qsizetype hashtag = link.lastIndexOf(QChar('#'));
+ if (hashtag != -1)
+ link.truncate(hashtag);
+ link += QLatin1Char('#') + ref;
+ }
+ return link;
+}
+
+std::pair<QString, QString> XmlGenerator::anchorForNode(const Node *node)
+{
+ std::pair<QString, QString> anchorPair;
+
+ anchorPair.first = Generator::fileName(node);
+ if (node->isTextPageNode())
+ anchorPair.second = node->title();
+
+ return anchorPair;
+}
+
+/*!
+ Returns a string describing the \a node type.
+ */
+QString XmlGenerator::targetType(const Node *node)
+{
+ if (!node)
+ return QStringLiteral("external");
+
+ switch (node->nodeType()) {
+ case Node::Namespace:
+ return QStringLiteral("namespace");
+ case Node::Class:
+ case Node::Struct:
+ case Node::Union:
+ return QStringLiteral("class");
+ case Node::Page:
+ case Node::Example:
+ return QStringLiteral("page");
+ case Node::Enum:
+ return QStringLiteral("enum");
+ case Node::TypeAlias:
+ return QStringLiteral("alias");
+ case Node::Typedef:
+ return QStringLiteral("typedef");
+ case Node::Property:
+ return QStringLiteral("property");
+ case Node::Function:
+ return QStringLiteral("function");
+ case Node::Variable:
+ return QStringLiteral("variable");
+ case Node::Module:
+ return QStringLiteral("module");
+ default:
+ break;
+ }
+ return QString();
+}
+
+QT_END_NAMESPACE