QmlJS: Use canonical paths for matching of import directories

We rely on string comparison for detection of QML import paths. Therefore
make sure that all paths are canonical.

Change-Id: I416bc31915644a888c416d726049668b0e71f29a
Task-number: QTCREATORBUG-12902
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@digia.com>

src/libs/qmljs/qmljsdocument.cpp

@@ -534,6 +534,7 @@ void Snapshot::insert(const Document::Ptr &document, bool allowInvalid)
 
 void Snapshot::insertLibraryInfo(const QString &path, const LibraryInfo &info)
 {
+    QTC_CHECK(!path.isEmpty());
     QTC_CHECK(info.fingerprint() == info.calculateFingerprint());
     _libraries.insert(QDir::cleanPath(path), info);
     if (!info.wasFound()) return;

src/libs/qmljs/qmljslink.cpp

@@ -438,15 +438,21 @@ Import LinkPrivate::importNonFile(Document::Ptr doc, const ImportInfo &importInf
 }
 
 bool LinkPrivate::importLibrary(Document::Ptr doc,
-                         const QString &libraryPath,
+                         const QString &libraryPath_,
                          Import *import,
                          const QString &importPath)
 {
     const ImportInfo &importInfo = import->info;
-
-    const LibraryInfo libraryInfo = snapshot.libraryInfo(libraryPath);
-    if (!libraryInfo.isValid())
-        return false;
+    QString libraryPath = libraryPath_;
+
+    LibraryInfo libraryInfo = snapshot.libraryInfo(libraryPath);
+    if (!libraryInfo.isValid()) {
+        // try canonical path
+        libraryPath = QFileInfo(libraryPath).canonicalFilePath();
+        libraryInfo = snapshot.libraryInfo(libraryPath);
+        if (!libraryInfo.isValid())
+            return false;
+    }
 
     import->libraryPath = libraryPath;
 

src/libs/qmljs/qmljsmodelmanagerinterface.cpp

@@ -114,9 +114,11 @@ ModelManagerInterface::ModelManagerInterface(QObject *parent)
     qRegisterMetaType<QmlJS::Document::Ptr>("QmlJS::Document::Ptr");
     qRegisterMetaType<QmlJS::LibraryInfo>("QmlJS::LibraryInfo");
 
-    m_defaultProjectInfo.qtImportsPath = QLibraryInfo::location(QLibraryInfo::ImportsPath);
+    m_defaultProjectInfo.qtImportsPath = QFileInfo(
+                QLibraryInfo::location(QLibraryInfo::ImportsPath)).canonicalFilePath();
 #if (QT_VERSION >= QT_VERSION_CHECK(5, 0, 0))
-    m_defaultProjectInfo.qtQmlPath = QLibraryInfo::location(QLibraryInfo::Qml2ImportsPath);
+    m_defaultProjectInfo.qtQmlPath = QFileInfo(
+                QLibraryInfo::location(QLibraryInfo::Qml2ImportsPath)).canonicalFilePath();
 #endif
 
     m_defaultImportPaths << environmentImportPaths();

src/plugins/qmljstools/qmljsmodelmanager.cpp

@@ -112,14 +112,14 @@ ModelManagerInterface::ProjectInfo QmlJSTools::defaultProjectInfoForProject(
         projectInfo.tryQmlDump = project && (
                     qtVersion->type() == QLatin1String(QtSupport::Constants::DESKTOPQT)
                     || qtVersion->type() == QLatin1String(QtSupport::Constants::SIMULATORQT));
-        projectInfo.qtQmlPath = qtVersion->qmakeProperty("QT_INSTALL_QML");
-        projectInfo.qtImportsPath = qtVersion->qmakeProperty("QT_INSTALL_IMPORTS");
+        projectInfo.qtQmlPath = QFileInfo(qtVersion->qmakeProperty("QT_INSTALL_QML")).canonicalFilePath();
+        projectInfo.qtImportsPath = QFileInfo(qtVersion->qmakeProperty("QT_INSTALL_IMPORTS")).canonicalFilePath();
         projectInfo.qtVersionString = qtVersion->qtVersionString();
     } else {
 #if (QT_VERSION >= QT_VERSION_CHECK(5, 0, 0))
-        projectInfo.qtQmlPath = QLibraryInfo::location(QLibraryInfo::Qml2ImportsPath);
+        projectInfo.qtQmlPath = QFileInfo(QLibraryInfo::location(QLibraryInfo::Qml2ImportsPath)).canonicalFilePath();
 #endif
-        projectInfo.qtImportsPath = QLibraryInfo::location(QLibraryInfo::ImportsPath);
+        projectInfo.qtImportsPath = QFileInfo(QLibraryInfo::location(QLibraryInfo::ImportsPath)).canonicalFilePath();
         projectInfo.qtVersionString = QLatin1String(qVersion());
     }