Avoid creation of temporary lists of ProjectNodes

Change-Id: Iac84f7f95291fb3b12a071a066d358aaab309c52
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

13 files changed, 57 insertions, 95 deletions

diff --git a/src/plugins/cmakeprojectmanager/fileapidataextractor.cpp b/src/plugins/cmakeprojectmanager/fileapidataextractor.cpp
index cf60c0b7dc..399ed7385c 100644
--- a/src/plugins/cmakeprojectmanager/fileapidataextractor.cpp
+++ b/src/plugins/cmakeprojectmanager/fileapidataextractor.cpp
@@ -497,11 +497,8 @@ FolderNode *createSourceGroupNode(const QString &sourceGroupName,
         const QStringList parts = sourceGroupName.split("\\");
 
         for (const QString &p : parts) {
-            FolderNode *existingNode = Utils::findOrDefault(currentNode->folderNodes(),
-                                                            [&p](const FolderNode *fn) {
-                                                                return fn->displayName() == p;
-                                                            });
-
+            FolderNode *existingNode = currentNode->findChildFolderNode(
+                [&p](const FolderNode *fn) { return fn->displayName() == p; });
             if (!existingNode) {
                 auto node = createCMakeVFolder(sourceDirectory, Node::DefaultFolderPriority + 5, p);
                 node->setListInProject(false);
diff --git a/src/plugins/cmakeprojectmanager/projecttreehelper.cpp b/src/plugins/cmakeprojectmanager/projecttreehelper.cpp
index 3fb89d9fec..4069ca6aa1 100644
--- a/src/plugins/cmakeprojectmanager/projecttreehelper.cpp
+++ b/src/plugins/cmakeprojectmanager/projecttreehelper.cpp
@@ -42,8 +42,7 @@ void addCMakeVFolder(FolderNode *base,
         base->addNode(std::move(newFolder));
     }
     folder->addNestedNodes(std::move(files));
-    for (FolderNode *fn : folder->folderNodes())
-        fn->compress();
+    folder->forEachFolderNode([] (FolderNode *fn) { fn->compress(); });
 }
 
 std::vector<std::unique_ptr<FileNode>> &&removeKnownNodes(
diff --git a/src/plugins/compilationdatabaseprojectmanager/compilationdatabaseproject.cpp b/src/plugins/compilationdatabaseprojectmanager/compilationdatabaseproject.cpp
index 49712c3206..ad614e7e23 100644
--- a/src/plugins/compilationdatabaseprojectmanager/compilationdatabaseproject.cpp
+++ b/src/plugins/compilationdatabaseprojectmanager/compilationdatabaseproject.cpp
@@ -223,13 +223,10 @@ FolderNode *addChildFolderNode(FolderNode *parent, const QString &childName)
 
 FolderNode *addOrGetChildFolderNode(FolderNode *parent, const QString &childName)
 {
-    for (FolderNode *folder : parent->folderNodes()) {
-        if (folder->filePath().fileName() == childName) {
-            return folder;
-        }
-    }
-
-    return addChildFolderNode(parent, childName);
+    FolderNode *fn = parent->findChildFolderNode([&](FolderNode *folder) {
+        return folder->filePath().fileName() == childName;
+    });
+    return fn ? fn : addChildFolderNode(parent, childName);
 }
 
     // Return the node for folderPath.
diff --git a/src/plugins/modeleditor/componentviewcontroller.cpp b/src/plugins/modeleditor/componentviewcontroller.cpp
index 75495c6684..4071c5b015 100644
--- a/src/plugins/modeleditor/componentviewcontroller.cpp
+++ b/src/plugins/modeleditor/componentviewcontroller.cpp
@@ -29,6 +29,7 @@
 // TODO implement removing include dependencies that are not longer used
 // TODO refactor add/remove relations between ancestor packages into extra controller class
 
+using namespace ProjectExplorer;
 using namespace Utils;
 
 namespace ModelEditor {
@@ -217,17 +218,16 @@ QStringList UpdateIncludeDependenciesVisitor::findFilePathOfComponent(const qmt:
 void UpdateIncludeDependenciesVisitor::collectElementPaths(const ProjectExplorer::FolderNode *folderNode,
                                                            QMultiHash<QString, Node> *filePathsMap)
 {
-    const QList<ProjectExplorer::FileNode *> fileNodes = folderNode->fileNodes();
-    for (const ProjectExplorer::FileNode *fileNode : fileNodes) {
+    folderNode->forEachFileNode([&](FileNode *fileNode) {
         QString elementName = qmt::NameController::convertFileNameToElementName(fileNode->filePath().toString());
         QFileInfo fileInfo = fileNode->filePath().toFileInfo();
         QString nodePath = fileInfo.path();
         QStringList elementsPath = qmt::NameController::buildElementsPath(nodePath, false);
         filePathsMap->insert(elementName, Node(fileNode->filePath().toString(), elementsPath));
-    }
-    const QList<ProjectExplorer::FolderNode *> subNodes = folderNode->folderNodes();
-    for (const ProjectExplorer::FolderNode *subNode : subNodes)
+    });
+    folderNode->forEachFolderNode([&](FolderNode *subNode) {
         collectElementPaths(subNode, filePathsMap);
+    });
 }
 
 qmt::MComponent *UpdateIncludeDependenciesVisitor::findComponentFromFilePath(const QString &filePath)
diff --git a/src/plugins/modeleditor/modelindexer.cpp b/src/plugins/modeleditor/modelindexer.cpp
index 9923782ac7..d4471fe0ec 100644
--- a/src/plugins/modeleditor/modelindexer.cpp
+++ b/src/plugins/modeleditor/modelindexer.cpp
@@ -34,6 +34,8 @@
 #include <QDebug>
 #include <QPointer>
 
+using namespace ProjectExplorer;
+
 namespace ModelEditor {
 namespace Internal {
 
@@ -447,18 +449,20 @@ QString ModelIndexer::findFirstModel(ProjectExplorer::FolderNode *folderNode,
 {
     if (!mimeType.isValid())
         return QString();
-    const QList<ProjectExplorer::FileNode *> fileNodes = folderNode->fileNodes();
-    for (const ProjectExplorer::FileNode *fileNode : fileNodes) {
-        if (mimeType.suffixes().contains(fileNode->filePath().completeSuffix()))
-            return fileNode->filePath().toString();
-    }
-    const QList<ProjectExplorer::FolderNode *> subFolderNodes = folderNode->folderNodes();
-    for (ProjectExplorer::FolderNode *subFolderNode : subFolderNodes) {
-        QString modelFileName = findFirstModel(subFolderNode, mimeType);
-        if (!modelFileName.isEmpty())
-            return modelFileName;
-    }
-    return QString();
+
+    const QStringList suffixes = mimeType.suffixes();
+    FileNode *foundFileNode = folderNode->findChildFileNode([&](FileNode *fn) {
+        return suffixes.contains(fn->filePath().completeSuffix());
+    });
+    if (foundFileNode)
+         return foundFileNode->filePath().toString();
+
+    QString modelFileName;
+    folderNode->findChildFolderNode([&](FolderNode *fn) {
+        modelFileName = findFirstModel(fn, mimeType);
+        return !modelFileName.isEmpty();
+    });
+    return modelFileName;
 }
 
 void ModelIndexer::forgetProject(ProjectExplorer::Project *project)
diff --git a/src/plugins/projectexplorer/projectnodes.cpp b/src/plugins/projectexplorer/projectnodes.cpp
index 4c82852954..e5c8a9a3c6 100644
--- a/src/plugins/projectexplorer/projectnodes.cpp
+++ b/src/plugins/projectexplorer/projectnodes.cpp
@@ -326,14 +326,13 @@ FilePath Node::pathOrDirectory(bool dir) const
         FilePath location;
         // Virtual Folder case
         // If there are files directly below or no subfolders, take the folder path
-        if (!folder->fileNodes().isEmpty() || folder->folderNodes().isEmpty()) {
+        auto Any = [](auto) { return true; };
+        if (folder->findChildFileNode(Any) || !folder->findChildFolderNode(Any)) {
             location = m_filePath;
         } else {
             // Otherwise we figure out a commonPath from the subfolders
             FilePaths list;
-            const QList<FolderNode *> folders = folder->folderNodes();
-            for (FolderNode *f : folders)
-                list << f->filePath();
+            folder->forEachFolderNode([&](FolderNode *f) { list << f->filePath(); });
             location = FileUtils::commonPath(list);
         }
 
@@ -604,16 +603,6 @@ const QList<Node *> FolderNode::nodes() const
     return Utils::toRawPointer<QList>(m_nodes);
 }
 
-QList<FileNode *> FolderNode::fileNodes() const
-{
-    QList<FileNode *> result;
-    for (const std::unique_ptr<Node> &n : m_nodes) {
-        if (FileNode *fn = n->asFileNode())
-            result.append(fn);
-    }
-    return result;
-}
-
 FileNode *FolderNode::fileNode(const Utils::FilePath &file) const
 {
     return static_cast<FileNode *>(Utils::findOrDefault(m_nodes,
@@ -623,16 +612,6 @@ FileNode *FolderNode::fileNode(const Utils::FilePath &file) const
     }));
 }
 
-QList<FolderNode *> FolderNode::folderNodes() const
-{
-    QList<FolderNode *> result;
-    for (const std::unique_ptr<Node> &n : m_nodes) {
-        if (FolderNode *fn = n->asFolderNode())
-            result.append(fn);
-    }
-    return result;
-}
-
 FolderNode *FolderNode::folderNode(const Utils::FilePath &directory) const
 {
     Node *node = Utils::findOrDefault(m_nodes, [directory](const std::unique_ptr<Node> &n) {
@@ -705,8 +684,7 @@ void FolderNode::compress()
 
         compress();
     } else {
-        for (FolderNode *fn : folderNodes())
-            fn->compress();
+        forEachFolderNode([&](FolderNode *fn) { fn->compress(); });
     }
 }
 
diff --git a/src/plugins/projectexplorer/projectnodes.h b/src/plugins/projectexplorer/projectnodes.h
index 3af72aa003..0e0068ba7b 100644
--- a/src/plugins/projectexplorer/projectnodes.h
+++ b/src/plugins/projectexplorer/projectnodes.h
@@ -236,9 +236,7 @@ public:
     FolderNode *findChildFolderNode(const std::function<bool (FolderNode *)> &predicate) const; // non-recursive
     FileNode *findChildFileNode(const std::function<bool (FileNode *)> &predicate) const; // non-recursive
     const QList<Node *> nodes() const;
-    QList<FileNode *> fileNodes() const;
     FileNode *fileNode(const Utils::FilePath &file) const;
-    QList<FolderNode *> folderNodes() const;
     FolderNode *folderNode(const Utils::FilePath &directory) const;
 
     using FolderNodeFactory = std::function<std::unique_ptr<FolderNode>(const Utils::FilePath &)>;
diff --git a/src/plugins/projectexplorer/projectwizardpage.cpp b/src/plugins/projectexplorer/projectwizardpage.cpp
index a648eb0981..b13bde370b 100644
--- a/src/plugins/projectexplorer/projectwizardpage.cpp
+++ b/src/plugins/projectexplorer/projectwizardpage.cpp
@@ -245,12 +245,10 @@ static AddNewTree *buildAddFilesTree(FolderNode *root, const FilePaths &files,
                                      Node *contextNode, BestNodeSelector *selector)
 {
     QList<AddNewTree *> children;
-    const QList<FolderNode *> folderNodes = root->folderNodes();
-    for (FolderNode *fn : folderNodes) {
-        AddNewTree *child = buildAddFilesTree(fn, files, contextNode, selector);
-        if (child)
+    root->forEachFolderNode([&](FolderNode *fn) {
+        if (AddNewTree *child = buildAddFilesTree(fn, files, contextNode, selector))
             children.append(child);
-    }
+    });
 
     if (root->supportsAction(AddNewFile, root) && !root->supportsAction(InheritedFromParent, root)) {
         FolderNode::AddNewInformation info = root->addNewInformation(files, contextNode);
diff --git a/src/plugins/qmakeprojectmanager/qmakenodes.cpp b/src/plugins/qmakeprojectmanager/qmakenodes.cpp
index 4f59d223ce..144a9cc0c9 100644
--- a/src/plugins/qmakeprojectmanager/qmakenodes.cpp
+++ b/src/plugins/qmakeprojectmanager/qmakenodes.cpp
@@ -115,9 +115,7 @@ bool QmakeBuildSystem::supportsAction(Node *context, ProjectAction action, const
                 const FolderNode *folder = node->asFolderNode();
                 if (folder) {
                     FilePaths list;
-                    const auto folderNodes = folder->folderNodes();
-                    for (FolderNode *f : folderNodes)
-                        list << f->filePath();
+                    folder->forEachFolderNode([&](FolderNode *f) { list << f->filePath(); });
                     if (n->deploysFolder(FileUtils::commonPath(list).toString()))
                         addExistingFiles = false;
                 }
diff --git a/src/plugins/qmakeprojectmanager/qmakenodetreebuilder.cpp b/src/plugins/qmakeprojectmanager/qmakenodetreebuilder.cpp
index 752cb7c319..528b18c95e 100644
--- a/src/plugins/qmakeprojectmanager/qmakenodetreebuilder.cpp
+++ b/src/plugins/qmakeprojectmanager/qmakenodetreebuilder.cpp
@@ -195,8 +195,7 @@ static void createTree(QmakeBuildSystem *buildSystem,
                     fileNode->setEnabled(fn.second == FileOrigin::ExactParse);
                     vfolder->addNestedNode(std::move(fileNode));
                 }
-                for (FolderNode *fn : vfolder->folderNodes())
-                    fn->compress();
+                vfolder->forEachFolderNode([](FolderNode *fn) { fn->compress(); });
             }
             node->addNode(std::move(vfolder));
         }
diff --git a/src/plugins/qmakeprojectmanager/qmakeproject.cpp b/src/plugins/qmakeprojectmanager/qmakeproject.cpp
index da68b010d5..68494eca6b 100644
--- a/src/plugins/qmakeprojectmanager/qmakeproject.cpp
+++ b/src/plugins/qmakeprojectmanager/qmakeproject.cpp
@@ -777,32 +777,25 @@ Tasks QmakeProject::projectIssues(const Kit *k) const
 }
 
 // Find the folder that contains a file with a certain name (recurse down)
-static FolderNode *folderOf(FolderNode *in, const FilePath &fileName)
+static FolderNode *folderOf(FolderNode *in, const FilePath &filePath)
 {
-    const QList<FileNode*> fileNodeList = in->fileNodes();
-    for (FileNode *fn : fileNodeList) {
-        if (fn->filePath() == fileName)
-            return in;
-    }
-    const QList<FolderNode *> folderNodeList = in->folderNodes();
-    for (FolderNode *folder : folderNodeList) {
-        if (FolderNode *pn = folderOf(folder, fileName))
-            return pn;
-    }
-    return {};
+    if (in->findChildFileNode([&filePath](FileNode *fn) { return fn->filePath() == filePath; }))
+        return in;
+
+    return in->findChildFolderNode([&filePath](FolderNode *folder) {
+        return folderOf(folder, filePath);
+    });
 }
 
 // Find the QmakeProFileNode that contains a certain file.
 // First recurse down to folder, then find the pro-file.
-static FileNode *fileNodeOf(FolderNode *in, const FilePath &fileName)
-{
-    for (FolderNode *folder = folderOf(in, fileName); folder; folder = folder->parentFolderNode()) {
-        if (auto *proFile = dynamic_cast<QmakeProFileNode *>(folder)) {
-            const QList<FileNode*> fileNodeList = proFile->fileNodes();
-            for (FileNode *fileNode : fileNodeList) {
-                if (fileNode->filePath() == fileName)
-                    return fileNode;
-            }
+static FileNode *fileNodeOf(FolderNode *in, const FilePath &filePath)
+{
+    for (FolderNode *folder = folderOf(in, filePath); folder; folder = folder->parentFolderNode()) {
+        if (auto proFile = dynamic_cast<QmakeProFileNode *>(folder)) {
+            return proFile->findChildFileNode([&filePath](FileNode *fn) {
+                return fn->filePath() == filePath;
+            });
         }
     }
     return nullptr;
diff --git a/src/plugins/qmldesigner/documentmanager.cpp b/src/plugins/qmldesigner/documentmanager.cpp
index 9fdf4e4119..e3460622e7 100644
--- a/src/plugins/qmldesigner/documentmanager.cpp
+++ b/src/plugins/qmldesigner/documentmanager.cpp
@@ -32,6 +32,7 @@
 
 #include <QMessageBox>
 
+using namespace ProjectExplorer;
 using namespace Utils;
 
 namespace QmlDesigner {
@@ -413,8 +414,10 @@ void DocumentManager::findPathToIsoProFile(bool *iconResourceFileAlreadyExists,
         if (node->isVirtualFolderType() && node->displayName() == "Resources") {
             ProjectExplorer::FolderNode *virtualFolderNode = node->asFolderNode();
             if (QTC_GUARD(virtualFolderNode)) {
-                for (int subFolderIndex = 0; subFolderIndex < virtualFolderNode->folderNodes().size() && !iconQrcFileNode; ++subFolderIndex) {
-                    ProjectExplorer::FolderNode *subFolderNode = virtualFolderNode->folderNodes().at(subFolderIndex);
+                QList<FolderNode *> folderNodes;
+                virtualFolderNode->forEachFolderNode([&](FolderNode *fn) { folderNodes.append(fn); });
+                for (int subFolderIndex = 0; subFolderIndex < folderNodes.size() && !iconQrcFileNode; ++subFolderIndex) {
+                    ProjectExplorer::FolderNode *subFolderNode = folderNodes.at(subFolderIndex);
 
                     qCDebug(documentManagerLog) << "Checking if" << subFolderNode->displayName() << "("
                         << subFolderNode << ") is" << isoIconsQrcFile;
diff --git a/src/plugins/resourceeditor/resourcenode.cpp b/src/plugins/resourceeditor/resourcenode.cpp
index fa0e3b5e4a..d402e3ed89 100644
--- a/src/plugins/resourceeditor/resourcenode.cpp
+++ b/src/plugins/resourceeditor/resourcenode.cpp
@@ -268,9 +268,7 @@ static void compressTree(FolderNode *n)
         compressable->compress();
         return;
     }
-    const QList<FolderNode *> childFolders = n->folderNodes();
-    for (FolderNode * const c : childFolders)
-        compressTree(c);
+    n->forEachFolderNode([](FolderNode *c) { compressTree(c); });
 }
 
 void ResourceTopLevelNode::addInternalNodes()