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| |
| #include "qscriptxmlparser_p.h" |
| |
| #include <QtCore/qstringlist.h> |
| #include <QtCore/qxmlstream.h> |
| #include <QtCore/qdebug.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| static void tokenUntil(QXmlStreamReader &reader, QXmlStreamReader::TokenType target, |
| QList<int> &lineNumbers) |
| { |
| int level = 0; |
| while (!reader.atEnd()) { |
| QXmlStreamReader::TokenType t = reader.readNext(); |
| if ((t == target) && (level == 0)) |
| return; |
| if (t == QXmlStreamReader::StartElement) { |
| ++level; |
| QString line = reader.attributes().value(QLatin1String("line")).toString(); |
| if (!line.isEmpty()) |
| lineNumbers.append(line.toInt()); |
| } else if (t == QXmlStreamReader::EndElement) { |
| --level; |
| } |
| } |
| // Q_ASSERT_X(false, "QScriptXmlParser", "premature end of file"); |
| } |
| |
| QScriptXmlParser::Result QScriptXmlParser::parse(const QString &xml) |
| { |
| QMap<QString, int> functionsInfo; |
| QList<int> lineNumbers; |
| QXmlStreamReader reader(xml); |
| reader.readNext(); // StartDocument |
| reader.readNext(); // <program> |
| reader.readNext(); // <source-elements> |
| while (reader.readNext() == QXmlStreamReader::StartElement) { |
| // qDebug() << reader.name().toString(); |
| int line = reader.attributes().value(QLatin1String("line")).toString().toInt(); |
| lineNumbers.append(line); |
| if (reader.name() == QLatin1String("function-declaration")) { |
| // extract the line number, name and formal parameters |
| reader.readNext(); // <name> |
| reader.readNext(); // Characters |
| QString name = reader.text().toString(); |
| reader.readNext(); // </name> |
| reader.readNext(); // <formal-parameter-list> |
| QStringList formalParameters; |
| while (reader.readNext() == QXmlStreamReader::StartElement) { |
| reader.readNext(); // Characters |
| formalParameters.append(reader.text().toString()); |
| reader.readNext(); // </identifier> |
| } |
| reader.readNext(); // <function-body> |
| tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers); |
| |
| QString signature; |
| signature.append(name); |
| signature.append(QLatin1Char('(')); |
| for (int i = 0; i < formalParameters.size(); ++i) { |
| if (i > 0) |
| signature.append(QLatin1String(", ")); |
| signature.append(formalParameters.at(i)); |
| } |
| signature.append(QLatin1Char(')')); |
| functionsInfo.insert(signature, line); |
| } else if (reader.name() == QLatin1String("expression-statement")) { |
| reader.readNext(); |
| if ((reader.name() == QLatin1String("binary-expression")) |
| && reader.attributes().value(QLatin1String("op")) == QLatin1String("=")) { |
| // try to match a statement of the form Foo.prototype.bar = function() { ... } |
| // this can be generalized... |
| QString first, second, third; |
| reader.readNext(); // LHS |
| if (reader.name() == QLatin1String("field-member-expression")) { |
| reader.readNext(); |
| if (reader.name() == QLatin1String("field-member-expression")) { |
| reader.readNext(); |
| if (reader.name() == QLatin1String("identifier")) { |
| reader.readNext(); |
| first = reader.text().toString(); |
| } |
| tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers); |
| reader.readNext(); |
| if (reader.name() == QLatin1String("identifier")) { |
| reader.readNext(); |
| second = reader.text().toString(); |
| } |
| tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers); |
| } else if (reader.name() == QLatin1String("identifier")) { |
| reader.readNext(); |
| first = reader.text().toString(); |
| } |
| tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers); |
| reader.readNext(); |
| if (reader.name() == QLatin1String("identifier")) { |
| reader.readNext(); |
| if (second.isEmpty()) |
| second = reader.text().toString(); |
| else |
| third = reader.text().toString(); |
| } |
| tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers); |
| } |
| tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers); |
| reader.readNext(); // RHS |
| if (reader.name() == QLatin1String("function-expression")) { |
| if (!first.isEmpty()) { |
| QString signature = first; |
| if (!second.isEmpty()) { |
| signature.append(QLatin1Char('.')); |
| signature.append(second); |
| if (!third.isEmpty()) { |
| signature.append(QLatin1Char('.')); |
| signature.append(third); |
| } |
| } |
| signature.append(QLatin1String("()")); |
| functionsInfo.insert(signature, line); |
| } |
| } |
| tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers); |
| } |
| tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers); |
| } |
| tokenUntil(reader, QXmlStreamReader::EndElement, lineNumbers); |
| } |
| reader.readNext(); // </source-elements> |
| reader.readNext(); // </program> |
| reader.readNext(); // EndDocument |
| Q_ASSERT(reader.atEnd()); |
| return Result(functionsInfo, lineNumbers.toSet()); |
| } |
| |
| QT_END_NAMESPACE |