Utils: Replace FilePath::rootPath() by some isRootPath()

Keeps more context to make it host-independent later.

Change-Id: I0f8ad3e8794daa6324662847203200ae378d34b4
Reviewed-by: Christian Stenger <christian.stenger@qt.io>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>

src/libs/utils/filepath.cpp

@@ -167,9 +167,10 @@ FilePath FilePath::currentWorkingPath()
     return FilePath::fromString(QDir::currentPath());
 }
 
-FilePath FilePath::rootPath()
+bool FilePath::isRootPath() const
 {
-    return FilePath::fromString(QDir::rootPath());
+    // FIXME: Make host-independent
+    return operator==(FilePath::fromString(QDir::rootPath()));
 }
 
 QString FilePath::encodedHost() const

src/libs/utils/filepath.h

@@ -59,11 +59,9 @@ public:
     [[nodiscard]] static FilePath fromParts(const QStringView scheme, const QStringView host, const QStringView path);
 
     [[nodiscard]] static FilePath currentWorkingPath();
-    [[nodiscard]] static FilePath rootPath();
 
     QString toUserOutput() const;
     QString toString() const;
-    QString toFSPathString() const;
     QVariant toVariant() const;
     QUrl toUrl() const;
 
@@ -102,6 +100,7 @@ public:
     bool isAbsolutePath() const { return !isRelativePath(); }
     bool isFile() const;
     bool isDir() const;
+    bool isRootPath() const;
     bool isNewerThan(const QDateTime &timeStamp) const;
     QDateTime lastModified() const;
     QFile::Permissions permissions() const;
@@ -191,6 +190,7 @@ public:
     [[nodiscard]] QFileInfo toFileInfo() const;
     [[nodiscard]] static FilePath fromFileInfo(const QFileInfo &info);
 
+    // Support for FSEngine. Do not use unless needed.
     enum class SpecialPathComponent {
         RootName,
         RootPath,
@@ -201,6 +201,8 @@ public:
     [[nodiscard]] static QString specialPath(SpecialPathComponent component);
     [[nodiscard]] static FilePath specialFilePath(SpecialPathComponent component);
 
+    QString toFSPathString() const;
+
 private:
     friend class ::tst_fileutils;
     static QString calcRelativePath(const QString &absolutePath, const QString &absoluteAnchorPath);

src/libs/utils/fsengine/fsenginehandler.h

@@ -5,9 +5,7 @@
 
 #include <QtCore/private/qabstractfileengine_p.h>
 
-namespace Utils {
-
-namespace Internal {
+namespace Utils::Internal {
 
 class FSEngineHandler : public QAbstractFileEngineHandler
 {
@@ -15,6 +13,4 @@ public:
     QAbstractFileEngine *create(const QString &fileName) const override;
 };
 
-} // namespace Internal
-
-} // namespace Utils
+} // Utils::Internal

src/plugins/projectexplorer/projectnodes.cpp

@@ -39,8 +39,8 @@ namespace ProjectExplorer {
 QHash<QString, QIcon> DirectoryIcon::m_cache;
 
 static FolderNode *recursiveFindOrCreateFolderNode(FolderNode *folder,
-                                                   const Utils::FilePath &directory,
-                                                   const Utils::FilePath &overrideBaseDir,
+                                                   const FilePath &directory,
+                                                   const FilePath &overrideBaseDir,
                                                    const FolderNode::FolderNodeFactory &factory)
 {
     Utils::FilePath path = overrideBaseDir.isEmpty() ? folder->filePath() : overrideBaseDir;
@@ -48,7 +48,7 @@ static FolderNode *recursiveFindOrCreateFolderNode(FolderNode *folder,
     Utils::FilePath directoryWithoutPrefix;
     bool isRelative = false;
 
-    if (path.isEmpty() || path == FilePath::rootPath()) {
+    if (path.isEmpty() || path.isRootPath()) {
         directoryWithoutPrefix = directory;
         isRelative = false;
     } else {