WIP settings generator

tools/settingsgenerator/qsettingsgenerator.xsd

@@ -80,6 +80,7 @@
 		</xs:sequence>
 		<xs:attribute name="name" type="xs:string" use="optional"/>
 		<xs:attribute name="prefix" type="xs:string" use="optional"/>
+		<xs:attribute name="baseKey" type="xs:string" use="optional"/>
 	</xs:complexType>
 
 	<!-- root elements-->

tools/settingsgenerator/settingsgenerator.cpp

@@ -1,5 +1,9 @@
 #include "settingsgenerator.h"
 #include <QDebug>
+#include <QFileInfo>
+#include <QDir>
+
+#define TABS QString{QLatin1Char('\t')}.repeated(intendent)
 
 SettingsGenerator::SettingsGenerator(const QString &inPath, const QString &hdrPath, const QString &srcPath) :
 	_inFile{inPath},
@@ -19,177 +23,293 @@ void SettingsGenerator::process()
 	if(!_srcFile.open(QIODevice::WriteOnly | QIODevice::Text))
 		throwFile(_srcFile);
 
-	readData();
-}
-
-void SettingsGenerator::readData()
-{
 	if(!_xml.readNextStartElement())
-		throwReader();
+		throwReader(_xml);
 	if(_xml.name() != QStringLiteral("Settings"))
-		throwChild();
+		throwChild(_xml);
-
+	auto data = readSettings(_xml);
-	_data = readSettings();
+	checkError(_xml);
-	checkError();
 	qDebug() << "Completed parsing xml - it is valid";
+
+	data.includes.append({
+							{false, QStringLiteral("QtCore/QObject")},
+							{false, QStringLiteral("QtMvvmCore/ISettingsAccessor")},
+							{false, QStringLiteral("QtMvvmCore/SettingsEntry")},
+						 });
+
+	writeHeader(data);
+	writeSource(data);
 }
 
-SettingsGenerator::Include SettingsGenerator::readInclude()
+SettingsGenerator::Include SettingsGenerator::readInclude(QXmlStreamReader &xml)
 {
 	Include include;
-	include.local = readAttrib<bool>(QStringLiteral("local"), false);
+	include.local = readAttrib<bool>(xml, QStringLiteral("local"), false);
-	include.include = _xml.readElementText();
+	include.include = xml.readElementText();
-	checkError();
+	checkError(xml);
 	return include;
 }
 
-SettingsGenerator::Param SettingsGenerator::readParam()
+SettingsGenerator::Param SettingsGenerator::readParam(QXmlStreamReader &xml)
 {
 	Param param;
-	param.key = readAttrib(QStringLiteral("key"), {}, true);
+	param.key = readAttrib(xml, QStringLiteral("key"), {}, true);
-	param.type = readAttrib(QStringLiteral("type"), {}, true);
+	param.type = readAttrib(xml, QStringLiteral("type"), {}, true);
-	param.asStr = readAttrib<bool>(QStringLiteral("asStr"), false);
+	param.asStr = readAttrib<bool>(xml, QStringLiteral("asStr"), false);
-	param.value = _xml.readElementText();
+	param.value = xml.readElementText();
-	checkError();
+	checkError(xml);
 	return param;
 }
 
-QSharedPointer<SettingsGenerator::Backend> SettingsGenerator::readBackend()
+QSharedPointer<SettingsGenerator::Backend> SettingsGenerator::readBackend(QXmlStreamReader &xml)
 {
 	auto backend = QSharedPointer<Backend>::create();
-	backend->className = readAttrib(QStringLiteral("class"), {}, true);
+	backend->className = readAttrib(xml, QStringLiteral("class"), {}, true);
-	while(_xml.readNextStartElement()) {
+	while(xml.readNextStartElement()) {
-		if(_xml.name() == QStringLiteral("Param"))
+		if(xml.name() == QStringLiteral("Param"))
-			backend->params.append(readParam());
+			backend->params.append(readParam(xml));
 		else
-			throwChild();
+			throwChild(xml);
 	}
-	checkError();
+	checkError(xml);
 	return backend;
 }
 
-QPair<QString, QString> SettingsGenerator::readTypeMapping()
+QPair<QString, QString> SettingsGenerator::readTypeMapping(QXmlStreamReader &xml)
 {
 	QPair<QString, QString> mapping;
-	mapping.first = readAttrib(QStringLiteral("key"), {}, true);
+	mapping.first = readAttrib(xml, QStringLiteral("key"), {}, true);
-	mapping.second = readAttrib(QStringLiteral("type"), {}, true);
+	mapping.second = readAttrib(xml, QStringLiteral("type"), {}, true);
-	checkError();
+	checkError(xml);
 	return mapping;
 }
 
-SettingsGenerator::Node SettingsGenerator::readNode()
+SettingsGenerator::Node SettingsGenerator::readNode(QXmlStreamReader &xml)
 {
 	Node node;
-	node.key = readAttrib(QStringLiteral("key"), {}, true);
+	node.key = readAttrib(xml, QStringLiteral("key"), {}, true);
-	while(_xml.readNextStartElement()) {
+	while(xml.readNextStartElement()) {
-		if(_xml.name() == QStringLiteral("Node"))
+		if(xml.name() == QStringLiteral("Node"))
-			node.subNodes.append(readNode());
+			node.subNodes.append(readNode(xml));
-		else if(_xml.name() == QStringLiteral("Entry"))
+		else if(xml.name() == QStringLiteral("Entry"))
-			node.subEntries.append(readEntry());
+			node.subEntries.append(readEntry(xml));
-		else if(_xml.name() == QStringLiteral("Import"))
+		else if(xml.name() == QStringLiteral("Import"))
-			node.subImports.append(readImport());
+			node.subImports.append(readImport(xml));
 		else
-			throwChild();
+			throwChild(xml);
 	}
-	checkError();
+	checkError(xml);
 	return node;
 }
 
-SettingsGenerator::Entry SettingsGenerator::readEntry()
+SettingsGenerator::Entry SettingsGenerator::readEntry(QXmlStreamReader &xml)
 {
 	Entry entry;
-	entry.key = readAttrib(QStringLiteral("key"), {}, true);
+	entry.key = readAttrib(xml, QStringLiteral("key"), {}, true);
-	entry.type = readAttrib(QStringLiteral("type"), {}, true);
+	entry.type = readAttrib(xml, QStringLiteral("type"), {}, true);
-	entry.qmlGroupKey = readAttrib(QStringLiteral("qmlGroupKey"));
+	entry.qmlGroupKey = readAttrib(xml, QStringLiteral("qmlGroupKey"));
-	entry.defaultValue = readAttrib(QStringLiteral("default"));
+	entry.defaultValue = readAttrib(xml, QStringLiteral("default"));
-	entry.tr = readAttrib<bool>(QStringLiteral("tr"), false);
+	entry.tr = readAttrib<bool>(xml, QStringLiteral("tr"), false);
-	entry.trContext = readAttrib(QStringLiteral("trContext"));
+	entry.trContext = readAttrib(xml, QStringLiteral("trContext"));
-	while(_xml.readNextStartElement()) {
+	while(xml.readNextStartElement()) {
-		if(_xml.name() == QStringLiteral("Code")) {
+		if(xml.name() == QStringLiteral("Code")) {
 			if(!entry.defaultValue.isNull())
-				throwChild();
+				throwChild(xml);
-			entry.defaultValue = _xml.readElementText();
+			entry.defaultValue = xml.readElementText();
 			entry.defaultIsCode = true;
-			checkError();
+			checkError(xml);
-		} else if(_xml.name() == QStringLiteral("Node"))
+		} else if(xml.name() == QStringLiteral("Node"))
-			entry.subNodes.append(readNode());
+			entry.subNodes.append(readNode(xml));
-		else if(_xml.name() == QStringLiteral("Entry"))
+		else if(xml.name() == QStringLiteral("Entry"))
-			entry.subEntries.append(readEntry());
+			entry.subEntries.append(readEntry(xml));
-		else if(_xml.name() == QStringLiteral("Import"))
+		else if(xml.name() == QStringLiteral("Import"))
-			entry.subImports.append(readImport());
+			entry.subImports.append(readImport(xml));
 		else
-			throwChild();
+			throwChild(xml);
 	}
-	checkError();
+	checkError(xml);
 	return entry;
 }
 
-SettingsGenerator::Import SettingsGenerator::readImport()
+SettingsGenerator::Import SettingsGenerator::readImport(QXmlStreamReader &xml)
 {
-	Import import;
+	auto required = readAttrib<bool>(xml, QStringLiteral("required"), true);
-	import.required = readAttrib<bool>(QStringLiteral("required"), true);
+	auto rootNode = readAttrib(xml, QStringLiteral("rootNode")).split(QLatin1Char('/'), QString::SkipEmptyParts);
-	import.rootNode = readAttrib(QStringLiteral("rootNode"));
+	auto path = xml.readElementText();
-	import.import = _xml.readElementText();
+	checkError(xml);
-	checkError();
+
-	return import;
+	auto pInfo = QFileInfo{static_cast<QFileDevice*>(xml.device())->fileName()}.dir();
+	QFile subFile{pInfo.absoluteFilePath(path)};
+	if(!subFile.exists()) {
+		if(required)
+			throwReader(xml, QStringLiteral("Failed to find required import file \"%1\"").arg(subFile.fileName()));
+		else
+			return {};
+	}
+
+	if(!subFile.open(QIODevice::ReadOnly | QIODevice::Text))
+		throwFile(subFile);
+
+	//TODO implement
+
+	QXmlStreamReader reader{&subFile};
+	if(!reader.readNextStartElement())
+		throwReader(reader);
+	if(reader.name() != QStringLiteral("Settings"))
+		throwChild(reader);
+	Node subSettings = readSettings(reader);
+	checkError(reader);
+	for(const auto &key : rootNode) {
+		auto found = false;
+		for(const auto &sNode : qAsConst(subSettings.subNodes)) {
+			if(sNode.key == key) {
+				found = true;
+				subSettings = sNode;
+				break;
+			}
+		}
+		for(const auto &sNode : qAsConst(subSettings.subEntries)) {
+			if(sNode.key == key) {
+				found = true;
+				subSettings = sNode;
+				break;
+			}
+		}
+		for(const auto &sNode : qAsConst(subSettings.subImports)) {
+			if(sNode.key == key) {
+				found = true;
+				subSettings = sNode;
+				break;
+			}
+		}
+		if(!found)
+			throwReader(xml, QStringLiteral("Unable to find rootNode \"%1\" in loaded document").arg(rootNode.join(QLatin1Char('/'))));
 	}
 
-SettingsGenerator::Settings SettingsGenerator::readSettings()
+	return std::move(subSettings);
+}
+
+SettingsGenerator::Settings SettingsGenerator::readSettings(QXmlStreamReader &xml)
 {
 	Settings settings;
-	settings.name = readAttrib(QStringLiteral("name"), {}, true);
+	settings.name = readAttrib(xml, QStringLiteral("name"), {}, true);
-	settings.prefix = readAttrib(QStringLiteral("prefix"));
+	settings.prefix = readAttrib(xml, QStringLiteral("prefix"));
-
+
-	while(_xml.readNextStartElement()) {
+	while(xml.readNextStartElement()) {
-		if(_xml.name() == QStringLiteral("Include"))
+		if(xml.name() == QStringLiteral("Include"))
-			settings.includes.append(readInclude());
+			settings.includes.append(readInclude(xml));
-		else if(_xml.name() == QStringLiteral("Backend"))
+		else if(xml.name() == QStringLiteral("Backend"))
-			settings.backend = readBackend();
+			settings.backend = readBackend(xml);
-		else if(_xml.name() == QStringLiteral("TypeMapping")) {
+		else if(xml.name() == QStringLiteral("TypeMapping")) {
-			auto mapping = readTypeMapping();
+			auto mapping = readTypeMapping(xml);
 			settings.typeMapping.insert(mapping.first, mapping.second);
-		} else if(_xml.name() == QStringLiteral("Node"))
+		} else if(xml.name() == QStringLiteral("Node"))
-			settings.subNodes.append(readNode());
+			settings.subNodes.append(readNode(xml));
-		else if(_xml.name() == QStringLiteral("Entry"))
+		else if(xml.name() == QStringLiteral("Entry"))
-			settings.subEntries.append(readEntry());
+			settings.subEntries.append(readEntry(xml));
-		else if(_xml.name() == QStringLiteral("Import"))
+		else if(xml.name() == QStringLiteral("Import"))
-			settings.subImports.append(readImport());
+			settings.subImports.append(readImport(xml));
 		else
-			throwChild();
+			throwChild(xml);
 	}
-	checkError();
+	checkError(xml);
 	return settings;
 }
 
-void SettingsGenerator::checkError() const
+void SettingsGenerator::writeHeader(const Settings &settings)
+{
+	QString incGuard = QFileInfo{_hdrFile.fileName()}
+					   .completeBaseName()
+					   .replace(QLatin1Char('.'), QLatin1Char('_'))
+					   .toUpper() + QStringLiteral("_H");
+	_hdr << "#ifndef " << incGuard << '\n'
+		 << "#define " << incGuard << "\n\n";
+
+	// write the includes
+	for(const auto &inc : settings.includes) {
+		if(inc.local)
+			_hdr << "#include \"" << inc.include << "\"\n";
+		else
+			_hdr << "#include <" << inc.include << ">\n";
+	}
+	_hdr << "\n";
+
+	// create the class
+	QString pName = settings.prefix.isEmpty() ? settings.name : (settings.prefix + QLatin1Char(' ') + settings.name);
+	_hdr << "class " << pName << " : public QObject\n"
+		 << "{\n"
+		 << "\tQ_OBJECT\n\n"
+		 << "\tQ_PROPERTY(ISettingsAccessor *accessor READ accessor CONSTANT FINAL)\n\n"
+		 << "public:\n"
+		 << "\tQ_INVOKABLE explicit " << settings.name << "(QObject *parent = nullptr);\n"
+		 << "\texplicit " << settings.name << "(QObject *parent, ISettingsAccessor *accessor);\n\n"
+		 << "\tstatic " << settings.name << " *instance();\n\n"
+		 << "\tISettingsAccessor *accessor() const;\n\n";
+
+	writeNodeElements(settings);
+
+	_hdr << "\nprivate:\n"
+		 << "\tISettingsAccessor *_accessor;\n"
+		 << "};\n\n"
+		 << "#endif //" << incGuard << '\n';
+}
+
+void SettingsGenerator::writeNodeElements(const SettingsGenerator::Node &node, int intendent)
+{
+	for(const auto &cNode : node.subNodes)
+		writeNode(cNode, intendent);
+	for(const auto &cEntry : node.subEntries)
+		writeEntry(cEntry, intendent);
+}
+
+void SettingsGenerator::writeNode(const SettingsGenerator::Node &node, int intendent)
+{
+	_hdr << TABS << "struct {\n";
+	writeNodeElements(node, intendent + 1);
+	_hdr << TABS << "} " << node.key << ";\n";
+}
+
+void SettingsGenerator::writeEntry(const SettingsGenerator::Entry &entry, int intendent)
+{
+	_hdr << TABS << "struct : QtMvvm::SettingsEntry<" << entry.type << "> {\n";
+	writeNodeElements(entry, intendent + 1);
+	_hdr << TABS << "} " << entry.key << ";\n";
+}
+
+void SettingsGenerator::writeSource(const Settings &settings)
+{
+
+}
+
+void SettingsGenerator::checkError(QXmlStreamReader &xml) const
 {
-	if(_xml.hasError())
+	if(xml.hasError())
-		throwReader();
+		throwReader(xml);
 }
 
 template<typename T>
-T SettingsGenerator::readAttrib(const QString &key, const T &defaultValue, bool required) const
+T SettingsGenerator::readAttrib(QXmlStreamReader &xml, const QString &key, const T &defaultValue, bool required) const
 {
-	if(_xml.attributes().hasAttribute(key))
+	if(xml.attributes().hasAttribute(key))
-		return QVariant(_xml.attributes().value(key).toString()).template value<T>();
+		return QVariant(xml.attributes().value(key).toString()).template value<T>();
 	else if(required)
-		throwReader(QStringLiteral("Required attribute \"%1\" but was not set").arg(key));
+		throwReader(xml, QStringLiteral("Required attribute \"%1\" but was not set").arg(key));
 	else
 		return defaultValue;
 }
 
 template<>
-bool SettingsGenerator::readAttrib<bool>(const QString &key, const bool &defaultValue, bool required) const
+bool SettingsGenerator::readAttrib<bool>(QXmlStreamReader &xml, const QString &key, const bool &defaultValue, bool required) const
 {
-	if(_xml.attributes().hasAttribute(key)) {
+	if(xml.attributes().hasAttribute(key)) {
-		if(_xml.attributes().value(key) == QStringLiteral("true"))
+		if(xml.attributes().value(key) == QStringLiteral("true"))
 			return true;
-		else if(_xml.attributes().value(key) == QStringLiteral("false"))
+		else if(xml.attributes().value(key) == QStringLiteral("false"))
 			return false;
 		else
-			throwReader(QStringLiteral("Value of attribute \"%1\" is not a xs:boolean!").arg(key));
+			throwReader(xml, QStringLiteral("Value of attribute \"%1\" is not a xs:boolean!").arg(key));
 	} else if(required)
-		throwReader(QStringLiteral("Required attribute \"%1\" but was not set").arg(key));
+		throwReader(xml, QStringLiteral("Required attribute \"%1\" but was not set").arg(key));
 	else
 		return defaultValue;
 }
@@ -199,16 +319,16 @@ void SettingsGenerator::throwFile(const QFileDevice &file) const
 	throw QStringLiteral("%1: %2").arg(file.fileName(), file.errorString());
 }
 
-void SettingsGenerator::throwReader(const QString &overwriteError) const
+void SettingsGenerator::throwReader(QXmlStreamReader &xml, const QString &overwriteError) const
 {
 	throw QStringLiteral("%1:%2:%3: %4")
-			.arg(dynamic_cast<QFileDevice*>(_xml.device())->fileName())
+			.arg(dynamic_cast<QFileDevice*>(xml.device())->fileName())
-			.arg(_xml.lineNumber())
+			.arg(xml.lineNumber())
-			.arg(_xml.columnNumber())
+			.arg(xml.columnNumber())
-			.arg(overwriteError.isNull() ? _xml.errorString() : overwriteError);
+			.arg(overwriteError.isNull() ? xml.errorString() : overwriteError);
 }
 
-void SettingsGenerator::throwChild()
+void SettingsGenerator::throwChild(QXmlStreamReader &xml)
 {
-	throwReader(QStringLiteral("Unexpected child element: %1").arg(_xml.name()));
+	throwReader(xml, QStringLiteral("Unexpected child element: %1").arg(xml.name()));
 }

tools/settingsgenerator/settingsgenerator.h

@@ -59,44 +59,51 @@ private:
 		QString trContext;
 	};
 
-	struct Import {
+	struct Import : public Node {
-		bool required;
+		inline Import() = default;
-		QString rootNode;
+		inline Import(Node &&node) :
-		QString import;
+			Node(std::move(node))
+		{}
 	};
 
 	struct Settings : public Node {
 		QString name;
 		QString prefix;
+		QString baseKey;
 
 		QList<Include> includes;
 		QSharedPointer<Backend> backend;
 		QHash<QString, QString> typeMapping;
-	} _data;
+	};
+
+	Include readInclude(QXmlStreamReader &xml);
+	Param readParam(QXmlStreamReader &xml);
+	QSharedPointer<Backend> readBackend(QXmlStreamReader &xml);
+	QPair<QString, QString> readTypeMapping(QXmlStreamReader &xml);
 
-	void readData();
+	Node readNode(QXmlStreamReader &xml);
+	Entry readEntry(QXmlStreamReader &xml);
+	Import readImport(QXmlStreamReader &xml);
 
-	Include readInclude();
+	Settings readSettings(QXmlStreamReader &xml);
-	Param readParam();
-	QSharedPointer<Backend> readBackend();
-	QPair<QString, QString> readTypeMapping();
 
-	Node readNode();
+	void writeHeader(const Settings &settings);
-	Entry readEntry();
+	void writeNodeElements(const Node &node, int intendent = 1);
-	Import readImport();
+	void writeNode(const Node &node, int intendent = 1);
+	void writeEntry(const Entry &entry, int intendent = 1);
 
-	Settings readSettings();
+	void writeSource(const Settings &settings);
 
 	template <typename T = QString>
-	T readAttrib(const QString &key, const T &defaultValue = {}, bool required = false) const;
+	T readAttrib(QXmlStreamReader &xml, const QString &key, const T &defaultValue = {}, bool required = false) const;
 
-	void checkError() const;
+	void checkError(QXmlStreamReader &xml) const;
 	Q_NORETURN void throwFile(const QFileDevice &file) const;
-	Q_NORETURN void throwReader(const QString &overwriteError = {}) const;
+	Q_NORETURN void throwReader(QXmlStreamReader &xml, const QString &overwriteError = {}) const;
-	Q_NORETURN void throwChild();
+	Q_NORETURN void throwChild(QXmlStreamReader &xml);
 };
 
 template<>
-bool SettingsGenerator::readAttrib<bool>(const QString &key, const bool &defaultValue, bool required) const;
+bool SettingsGenerator::readAttrib<bool>(QXmlStreamReader &xml, const QString &key, const bool &defaultValue, bool required) const;
 
 #endif // SETTINGSGENERATOR_H