mirror of
https://github.com/JakubMelka/PDF4QT.git
synced 2025-06-05 21:59:17 +02:00
Generating code
This commit is contained in:
Jakub Melka
@@ -17,6 +17,12 @@
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#include "codegenerator.h"
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#include <QFile>
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#include <QTextStream>
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#include <QTextLayout>
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#include <QApplication>
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#include <QFontMetrics>
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namespace codegen
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{
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@@ -57,6 +63,18 @@ void GeneratedCodeStorage::removeFunction(GeneratedFunction* function)
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m_functions.removeOne(function);
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}
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void GeneratedCodeStorage::generateCode(QTextStream& stream, CodeGeneratorParameters& parameters) const
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{
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stream << Qt::endl << Qt::endl;
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for (const QObject* object : m_functions)
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{
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const GeneratedFunction* generatedFunction = qobject_cast<const GeneratedFunction*>(object);
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generatedFunction->generateCode(stream, parameters);
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stream << Qt::endl << Qt::endl;
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}
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}
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QObject* Serializer::load(const QDomElement& element, QObject* parent)
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{
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QString className = element.attribute("class");
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@@ -223,6 +241,95 @@ void CodeGenerator::store(QDomDocument& document)
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}
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}
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void CodeGenerator::generateCode(QString headerName, QString sourceName) const
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{
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QString startMark = "/* START GENERATED CODE */";
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QString endMark = "/* END GENERATED CODE */";
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QString className = "PDFDocumentBuilder";
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const int indent = 4;
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QFile headerFile(headerName);
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if (headerFile.exists())
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{
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if (headerFile.open(QFile::ReadOnly))
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{
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QString utfCode = QString::fromUtf8(headerFile.readAll());
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headerFile.close();
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int startIndex = utfCode.indexOf(startMark, Qt::CaseSensitive) + startMark.length();
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int endIndex = utfCode.indexOf(endMark, Qt::CaseSensitive);
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QString frontPart = utfCode.left(startIndex);
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QString backPart = utfCode.mid(endIndex);
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QString headerGeneratedCode = generateHeader(indent);
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QString allCode = frontPart + headerGeneratedCode + backPart;
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headerFile.open(QFile::WriteOnly | QFile::Truncate);
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headerFile.write(allCode.toUtf8());
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headerFile.close();
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}
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}
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QFile sourceFile(sourceName);
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if (sourceFile.exists())
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{
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if (sourceFile.open(QFile::ReadOnly))
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{
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QString utfCode = QString::fromUtf8(sourceFile.readAll());
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sourceFile.close();
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int startIndex = utfCode.indexOf(startMark, Qt::CaseSensitive) + startMark.length();
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int endIndex = utfCode.indexOf(endMark, Qt::CaseSensitive);
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QString frontPart = utfCode.left(startIndex);
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QString backPart = utfCode.mid(endIndex);
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QString sourceGeneratedCode = generateSource(className, indent);
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QString allCode = frontPart + sourceGeneratedCode + backPart;
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sourceFile.open(QFile::WriteOnly | QFile::Truncate);
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sourceFile.write(allCode.toUtf8());
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sourceFile.close();
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}
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}
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}
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QString CodeGenerator::generateHeader(int indent) const
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{
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QByteArray ba;
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{
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QTextStream stream(&ba, QIODevice::WriteOnly);
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stream.setCodec("UTF-8");
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stream.setRealNumberPrecision(3);
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stream.setRealNumberNotation(QTextStream::FixedNotation);
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CodeGeneratorParameters parameters;
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parameters.header = true;
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parameters.indent = indent;
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m_storage->generateCode(stream, parameters);
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}
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return QString::fromUtf8(ba);
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}
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QString CodeGenerator::generateSource(QString className, int indent) const
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{
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QByteArray ba;
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{
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QTextStream stream(&ba, QIODevice::WriteOnly);
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stream.setCodec("UTF-8");
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stream.setRealNumberPrecision(3);
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stream.setRealNumberNotation(QTextStream::FixedNotation);
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CodeGeneratorParameters parameters;
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parameters.header = false;
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parameters.indent = indent;
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parameters.className = className;
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m_storage->generateCode(stream, parameters);
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}
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return QString::fromUtf8(ba);
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}
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GeneratedFunction::GeneratedFunction(QObject* parent) :
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BaseClass(parent)
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{
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@@ -274,6 +381,91 @@ GeneratedFunction* GeneratedFunction::clone(QObject* parent)
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return qobject_cast<GeneratedFunction*>(Serializer::clone(this, parent));
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}
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void GeneratedFunction::generateCode(QTextStream& stream, CodeGeneratorParameters& parameters) const
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{
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QStringList parameterCaptions;
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QStringList parameterTexts;
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std::function<void (const GeneratedBase*, Pass)> gatherParameters = [&](const GeneratedBase* object, Pass pass)
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{
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if (pass != Pass::Enter)
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{
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return;
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}
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if (const GeneratedParameter* generatedParameter = qobject_cast<const GeneratedParameter*>(object))
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{
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parameterCaptions << QString("%1 %2").arg(generatedParameter->getParameterName(), generatedParameter->getParameterDescription());
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parameterTexts << QString("%1 %2").arg(getCppType(generatedParameter->getParameterDataType()), generatedParameter->getParameterName());
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}
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};
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applyFunctor(gatherParameters);
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if (parameters.header)
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{
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// Generate header source code
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// Function comments
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for (const QString& string : getFormattedTextWithLayout("/// ", "/// ", getFunctionDescription(), parameters.indent))
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{
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stream << string << Qt::endl;
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}
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// Function parameter comments
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for (const QString& parameterCaption : parameterCaptions)
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{
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for (const QString& string : getFormattedTextWithLayout("/// \\param ", "/// ", parameterCaption, parameters.indent))
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{
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stream << string << Qt::endl;
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}
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}
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// Function declaration
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QString functionHeader = QString("%1 %2(").arg(getCppType(getReturnType()), getFunctionName());
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QString functionHeaderNext(functionHeader.length(), QChar(QChar::Space));
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QString functionFooter = QString(");");
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for (QString& str : parameterTexts)
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{
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str += ",";
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}
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parameterTexts.back().replace(",", functionFooter);
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QStringList functionDeclaration = getFormattedTextBlock(functionHeader, functionHeaderNext, parameterTexts, parameters.indent);
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for (const QString& functionDeclarationItem : functionDeclaration)
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{
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stream << functionDeclarationItem << Qt::endl;
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}
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}
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else
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{
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// Generate c++ source code
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QString functionHeader = QString("%1 %2::%3(").arg(getCppType(getReturnType()), parameters.className, getFunctionName());
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QString functionHeaderNext(functionHeader.length(), QChar(QChar::Space));
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QString functionFooter = QString(")");
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for (QString& str : parameterTexts)
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{
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str += ",";
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}
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parameterTexts.back().replace(",", functionFooter);
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QStringList functionDeclaration = getFormattedTextBlock(functionHeader, functionHeaderNext, parameterTexts, 0);
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for (const QString& functionDeclarationItem : functionDeclaration)
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{
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stream << functionDeclarationItem << Qt::endl;
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}
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QString indent(parameters.indent, QChar(QChar::Space));
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stream << "{" << Qt::endl;
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stream << indent << "PDFObjectFactory objectBuilder;" << Qt::endl << Qt::endl;
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generateSourceCode(stream, parameters);
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stream << "}" << Qt::endl;
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}
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}
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bool GeneratedFunction::hasField(GeneratedBase::FieldType fieldType) const
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{
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switch (fieldType)
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@@ -552,6 +744,86 @@ void GeneratedAction::setCode(const QString& code)
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m_code = code;
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}
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void GeneratedAction::generateSourceCodeImpl(QTextStream& stream, CodeGeneratorParameters& parameters, GeneratedBase::Pass pass) const
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{
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if (pass == Pass::Enter && getActionType() == Code)
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{
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QString indent(parameters.indent, QChar(QChar::Space));
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QStringList lines = getCode().split(QChar('\n'), Qt::KeepEmptyParts, Qt::CaseInsensitive);
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for (QString string : lines)
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{
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string = string.trimmed();
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if (!string.isEmpty())
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{
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stream << indent << string << Qt::endl;
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}
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else
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{
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stream << Qt::endl;
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}
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}
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}
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if (pass == Pass::Leave && getActionType() == CreateObject)
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{
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QString indent(parameters.indent, QChar(QChar::Space));
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switch (getVariableType())
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{
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case _PDFObject:
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{
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stream << indent << getCppType(getVariableType()) << " " << getVariableName() << " = objectBuilder.takeObject();";
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break;
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}
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case _PDFObjectReference:
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{
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stream << indent << getCppType(getVariableType()) << " " << getVariableName() << " = addObject(objectBuilder.takeObject());";
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break;
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}
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default:
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Q_ASSERT(false);
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break;
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}
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}
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if (pass == Pass::Leave && getActionType() != Parameters && !parameters.isLastItem)
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{
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stream << Qt::endl;
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}
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}
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void GeneratedBase::generateSourceCode(QTextStream& stream, CodeGeneratorParameters& parameters) const
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{
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generateSourceCodeImpl(stream, parameters, Pass::Enter);
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for (const QObject* object : m_items)
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{
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const GeneratedBase* generatedBase = qobject_cast<const GeneratedBase*>(object);
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CodeGeneratorParameters parametersTemporary = parameters;
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parametersTemporary.isFirstItem = object == m_items.front();
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parametersTemporary.isLastItem = object == m_items.back();
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generatedBase->generateSourceCode(stream, parametersTemporary);
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}
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generateSourceCodeImpl(stream, parameters, Pass::Leave);
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}
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void GeneratedBase::applyFunctor(std::function<void (const GeneratedBase*, Pass)>& functor) const
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{
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functor(this, Pass::Enter);
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for (const QObject* object : m_items)
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{
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const GeneratedBase* generatedBase = qobject_cast<const GeneratedBase*>(object);
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generatedBase->applyFunctor(functor);
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}
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functor(this, Pass::Leave);
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}
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bool GeneratedBase::canPerformOperation(Operation operation) const
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{
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const bool isFunction = qobject_cast<const GeneratedFunction*>(this) != nullptr;
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@@ -679,6 +951,73 @@ void GeneratedBase::clearItems()
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m_items.clear();
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}
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void GeneratedBase::generateSourceCodeImpl(QTextStream& stream, CodeGeneratorParameters& parameters, GeneratedBase::Pass pass) const
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{
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Q_UNUSED(stream);
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Q_UNUSED(parameters);
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Q_UNUSED(pass);
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}
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QString GeneratedBase::getCppType(DataType type) const
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{
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return Serializer::convertEnumToString(type).mid(1);
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}
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QStringList GeneratedBase::getFormattedTextWithLayout(QString firstPrefix, QString prefix, QString text, int indent) const
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{
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QFont font = QApplication::font();
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QFontMetrics fontMetrics(font);
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int usedLength = indent + qMax(firstPrefix.length(), prefix.length());
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int length = 80 - usedLength;
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QString testText(length, QChar('A'));
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int width = fontMetrics.width(testText);
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QTextLayout layout(text, font);
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layout.setCacheEnabled(false);
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QTextOption textOption = layout.textOption();
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textOption.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
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layout.setTextOption(textOption);
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layout.beginLayout();
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while (true)
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{
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QTextLine textLine = layout.createLine();
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if (!textLine.isValid())
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{
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break;
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}
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textLine.setLineWidth(width);
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}
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layout.endLayout();
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QStringList texts;
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const int lineCount = layout.lineCount();
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for (int i = 0; i < lineCount; ++i)
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{
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QTextLine line = layout.lineAt(i);
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texts << text.mid(line.textStart(), line.textLength());
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}
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return getFormattedTextBlock(firstPrefix, prefix, texts, indent);
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}
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QStringList GeneratedBase::getFormattedTextBlock(QString firstPrefix, QString prefix, QStringList texts, int indent) const
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{
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QString indentText(indent, QChar(QChar::Space));
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firstPrefix.prepend(indentText);
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prefix.prepend(indentText);
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QStringList result;
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QString currentPrefix = firstPrefix;
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for (const QString& text : texts)
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{
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result << QString("%1%2").arg(currentPrefix, text);
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currentPrefix = prefix;
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}
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return result;
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}
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GeneratedPDFObject::GeneratedPDFObject(QObject* parent) :
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BaseClass(parent)
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{
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@@ -844,6 +1183,89 @@ void GeneratedPDFObject::setDictionaryItemName(const QString& dictionaryItemName
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m_dictionaryItemName = dictionaryItemName;
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}
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void GeneratedPDFObject::generateSourceCodeImpl(QTextStream& stream, CodeGeneratorParameters& parameters, GeneratedBase::Pass pass) const
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{
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QString indent(parameters.indent, QChar(QChar::Space));
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QString writeTo("objectBuilder << ");
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switch (getObjectType())
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{
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case codegen::GeneratedPDFObject::Object:
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{
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if (pass == Pass::Enter)
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{
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stream << indent << writeTo << getValue().trimmed() << ";" << Qt::endl;
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}
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break;
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}
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case codegen::GeneratedPDFObject::ArraySimple:
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{
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if (pass == Pass::Enter)
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{
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stream << indent << "objectBuilder.beginArray();" << Qt::endl;
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stream << indent << writeTo << getValue().trimmed() << ";" << Qt::endl;
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stream << indent << "objectBuilder.endArray();" << Qt::endl;
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}
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break;
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}
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case codegen::GeneratedPDFObject::ArrayComplex:
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{
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if (pass == Pass::Enter)
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{
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stream << indent << "objectBuilder.beginArray();" << Qt::endl;
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}
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if (pass == Pass::Leave)
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{
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stream << indent << "objectBuilder.endArray();" << Qt::endl;
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}
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break;
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}
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case codegen::GeneratedPDFObject::Dictionary:
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{
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if (pass == Pass::Enter)
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{
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stream << indent << "objectBuilder.beginDictionary();" << Qt::endl;
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}
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if (pass == Pass::Leave)
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{
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stream << indent << "objectBuilder.endDictionary();" << Qt::endl;
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}
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break;
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}
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case codegen::GeneratedPDFObject::DictionaryItemSimple:
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{
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if (pass == Pass::Enter)
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{
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stream << indent << QString("objectBuilder.beginDictionaryItem(\"%1\");").arg(getDictionaryItemName()) << Qt::endl;
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stream << indent << writeTo << getValue().trimmed() << ";" << Qt::endl;
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stream << indent << "objectBuilder.endDictionaryItem();" << Qt::endl;
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}
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break;
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}
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case codegen::GeneratedPDFObject::DictionaryItemComplex:
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{
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if (pass == Pass::Enter)
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{
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stream << indent << QString("objectBuilder.beginDictionaryItem(\"%1\");").arg(getDictionaryItemName()) << Qt::endl;
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}
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if (pass == Pass::Leave)
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{
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stream << indent << "objectBuilder.endDictionaryItem();" << Qt::endl;
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}
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break;
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}
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default:
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Q_ASSERT(false);
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break;
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}
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}
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GeneratedParameter::GeneratedParameter(QObject* parent) :
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BaseClass(parent)
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{
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