core: improve log format for QML errors and warnings

src/core/generation.cpp

@@ -8,11 +8,13 @@
 #include <qfileinfo.h>
 #include <qfilesystemwatcher.h>
 #include <qhash.h>
+#include <qlist.h>
 #include <qlogging.h>
 #include <qloggingcategory.h>
 #include <qobject.h>
 #include <qqmlcontext.h>
 #include <qqmlengine.h>
+#include <qqmlerror.h>
 #include <qqmlincubator.h>
 #include <qtmetamacros.h>
 
@@ -24,6 +26,10 @@
 #include "reload.hpp"
 #include "scan.hpp"
 
+namespace {
+Q_LOGGING_CATEGORY(logScene, "scene");
+}
+
 static QHash<const QQmlEngine*, EngineGeneration*> g_generations; // NOLINT
 
 EngineGeneration::EngineGeneration(const QDir& rootPath, QmlScanner scanner)
@@ -34,6 +40,9 @@ EngineGeneration::EngineGeneration(const QDir& rootPath, QmlScanner scanner)
     , engine(new QQmlEngine()) {
 	g_generations.insert(this->engine, this);
 
+	this->engine->setOutputWarningsToStandardError(false);
+	QObject::connect(this->engine, &QQmlEngine::warnings, this, &EngineGeneration::onEngineWarnings);
+
 	this->engine->addUrlInterceptor(&this->urlInterceptor);
 	this->engine->setNetworkAccessManagerFactory(&this->interceptNetFactory);
 	this->engine->setIncubationController(&this->delayedIncubationController);
@@ -312,6 +321,22 @@ void EngineGeneration::incubationControllerDestroyed() {
 	}
 }
 
+void EngineGeneration::onEngineWarnings(const QList<QQmlError>& warnings) const {
+	for (const auto& error: warnings) {
+		auto rel = "**/" % this->rootPath.relativeFilePath(error.url().path());
+
+		QString objectName;
+		auto desc = error.description();
+		if (auto i = desc.indexOf(": "); i != -1) {
+			objectName = desc.first(i);
+			desc = desc.sliced(i + 2);
+		}
+
+		qCWarning(logScene).noquote().nospace() << objectName << " at " << rel << '[' << error.line()
+		                                        << ':' << error.column() << "]: " << desc;
+	}
+}
+
 void EngineGeneration::registerExtension(const void* key, EngineGenerationExt* extension) {
 	if (this->extensions.contains(key)) {
 		delete this->extensions.value(key);

src/core/generation.hpp

@@ -4,8 +4,10 @@
 #include <qdir.h>
 #include <qfilesystemwatcher.h>
 #include <qhash.h>
+#include <qlist.h>
 #include <qobject.h>
 #include <qqmlengine.h>
+#include <qqmlerror.h>
 #include <qqmlincubator.h>
 #include <qtclasshelpermacros.h>
 
@@ -82,6 +84,7 @@ private slots:
 	void onFileChanged(const QString& name);
 	void onDirectoryChanged();
 	void incubationControllerDestroyed();
+	void onEngineWarnings(const QList<QQmlError>& warnings) const;
 
 private:
 	void postReload();

src/core/rootwrapper.cpp

@@ -16,7 +16,6 @@
 #include "../window/floatingwindow.hpp"
 #include "generation.hpp"
 #include "instanceinfo.hpp"
-#include "logging.hpp"
 #include "qmlglobal.hpp"
 #include "scan.hpp"
 
@@ -32,7 +31,6 @@ RootWrapper::RootWrapper(QString rootPath, QString shellId)
 	this->reloadGraph(true);
 
 	if (this->generation == nullptr) {
-		qCritical() << "could not create scene graph, exiting";
 		exit(-1); // NOLINT
 	}
 }
@@ -54,6 +52,7 @@ void RootWrapper::reloadGraph(bool hard) {
 
 	// todo: move into EngineGeneration
 	if (this->generation != nullptr) {
+		qInfo() << "Reloading configuration...";
 		QuickshellSettings::reset();
 	}
 
@@ -65,9 +64,17 @@ void RootWrapper::reloadGraph(bool hard) {
 	auto component = QQmlComponent(generation->engine, url);
 
 	if (!component.isReady()) {
-		qCritical() << "Failed to load configuration:";
-		auto error = component.errorString().trimmed();
-		qCCritical(logBare).noquote() << error;
+		qCritical() << "Failed to load configuration";
+		QString errorString = "Failed to load configuration";
+
+		auto errors = component.errors();
+		for (auto& error: errors) {
+			auto rel = "**/" % rootPath.relativeFilePath(error.url().path());
+			auto msg = "  caused by " % rel % '[' % QString::number(error.line()) % ':'
+			         % QString::number(error.column()) % "]: " % error.description();
+			errorString += '\n' % msg;
+			qCritical().noquote() << msg;
+		}
 
 		auto newFiles = generation->scanner.scannedFiles;
 		generation->destroy();
@@ -80,15 +87,16 @@ void RootWrapper::reloadGraph(bool hard) {
 			auto showPopup = true;
 			if (this->generation->qsgInstance != nullptr) {
 				this->generation->qsgInstance->clearReloadPopupInhibit();
-				emit this->generation->qsgInstance->reloadFailed(error);
+				emit this->generation->qsgInstance->reloadFailed(errorString);
 				showPopup = !this->generation->qsgInstance->isReloadPopupInhibited();
 			}
 
-			if (showPopup) qs::ui::ReloadPopup::spawnPopup(InstanceInfo::CURRENT.instanceId, true, error);
+			if (showPopup)
+				qs::ui::ReloadPopup::spawnPopup(InstanceInfo::CURRENT.instanceId, true, errorString);
 		}
 
 		if (this->generation != nullptr && this->generation->qsgInstance != nullptr) {
-			emit this->generation->qsgInstance->reloadFailed(error);
+			emit this->generation->qsgInstance->reloadFailed(errorString);
 		}
 
 		return;