Make the Qml code model read qmldir files for import resolving.

However, it still re-reads for each use of Link. Needs to be optimized.

Reviewed-by: Roberto Raggi

src/libs/qmljs/parser/qmldirparser.cpp

@@ -0,0 +1,220 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtDeclarative module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qmldirparser_p.h"
+#include "qmlerror.h"
+
+#include <QtCore/QTextStream>
+#include <QtCore/QtDebug>
+
+QT_BEGIN_NAMESPACE
+
+QmlDirParser::QmlDirParser()
+    : _isParsed(false)
+{
+}
+
+QmlDirParser::~QmlDirParser()
+{
+}
+
+QUrl QmlDirParser::url() const
+{
+    return _url;
+}
+
+void QmlDirParser::setUrl(const QUrl &url)
+{
+    _url = url;
+}
+
+QString QmlDirParser::source() const
+{
+    return _source;
+}
+
+void QmlDirParser::setSource(const QString &source)
+{
+    _isParsed = false;
+    _source = source;
+}
+
+bool QmlDirParser::isParsed() const
+{
+    return _isParsed;
+}
+
+bool QmlDirParser::parse()
+{
+    if (_isParsed)
+        return true;
+
+    _isParsed = true;
+    _errors.clear();
+    _plugins.clear();
+    _components.clear();
+
+    QTextStream stream(&_source);
+    int lineNumber = 0;
+
+    forever {
+        ++lineNumber;
+
+        const QString line = stream.readLine();
+        if (line.isNull())
+            break;
+
+        QString sections[3];
+        int sectionCount = 0;
+
+        int index = 0;
+        const int length = line.length();
+
+        while (index != length) {
+            const QChar ch = line.at(index);
+
+            if (ch.isSpace()) {
+                do { ++index; }
+                while (index != length && line.at(index).isSpace());
+
+            } else if (ch == QLatin1Char('#')) {
+                // recognized a comment
+                break;
+
+            } else {
+                const int start = index;
+
+                do { ++index; }
+                while (index != length && !line.at(index).isSpace());
+
+                const QString lexeme = line.mid(start, index - start);
+
+                if (sectionCount >= 3) {
+                    reportError(lineNumber, start, QLatin1String("unexpected token"));
+
+                } else {
+                    sections[sectionCount++] = lexeme;
+                }
+            }
+        }
+
+        if (sectionCount == 0) {
+            continue; // no sections, no party.
+
+        } else if (sections[0] == QLatin1String("plugin")) {
+            if (sectionCount < 2) {
+                reportError(lineNumber, -1,
+                            QString::fromUtf8("plugin directive requires 2 arguments, but %1 were provided").arg(sectionCount + 1));
+
+                continue;
+            }
+
+            const Plugin entry(sections[1], sections[2]);
+
+            _plugins.append(entry);
+
+        } else if (sectionCount == 3) {
+            const QString &version = sections[1];
+            const int dotIndex = version.indexOf(QLatin1Char('.'));
+
+            if (dotIndex == -1) {
+                qWarning() << "expected '.'"; // ### use reportError
+
+            } else if (version.indexOf(QLatin1Char('.'), dotIndex + 1) != -1) {
+                qWarning() << "unexpected '.'"; // ### use reportError
+
+            } else {
+                bool validVersionNumber = false;
+                const int majorVersion = version.left(dotIndex).toInt(&validVersionNumber);
+
+                if (validVersionNumber) {
+                    const int minorVersion = version.mid(dotIndex + 1).toInt(&validVersionNumber);
+
+                    if (validVersionNumber) {
+                        const Component entry(sections[0], sections[2], majorVersion, minorVersion);
+
+                        _components.append(entry);
+                    }
+                }
+            }
+        } else {
+             // ### use reportError
+            qWarning() << "a component declaration requires 3 arguments, but" << (sectionCount + 1) << "were provided";
+        }
+    }
+
+    return hasError();
+}
+
+void QmlDirParser::reportError(int line, int column, const QString &description)
+{
+    QmlError error;
+    error.setUrl(_url);
+    error.setLine(line);
+    error.setColumn(column);
+    error.setDescription(description);
+    _errors.append(error);
+}
+
+bool QmlDirParser::hasError() const
+{
+    if (! _errors.isEmpty())
+        return true;
+
+    return false;
+}
+
+QList<QmlError> QmlDirParser::errors() const
+{
+    return _errors;
+}
+
+QList<QmlDirParser::Plugin> QmlDirParser::plugins() const
+{
+    return _plugins;
+}
+
+QList<QmlDirParser::Component> QmlDirParser::components() const
+{
+    return _components;
+}
+
+QT_END_NAMESPACE