CppEditor: Remove WorkingCopy::get(QString) overload

... and fix fallout.

Change-Id: I8fe67616f8f327428b1c166ae69ec34c2924ee9f
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/libs/cplusplus/FastPreprocessor.cpp

@@ -87,7 +87,7 @@ void FastPreprocessor::macroAdded(const Macro &macro)
 
 static const Macro revision(const Snapshot &s, const Macro &m)
 {
-    if (Document::Ptr d = s.document(m.fileName())) {
+    if (Document::Ptr d = s.document(m.filePath())) {
         Macro newMacro(m);
         newMacro.setFileRevision(d->revision());
         return newMacro;

src/libs/cplusplus/Macro.h

@@ -27,6 +27,8 @@
 
 #include <cplusplus/CPlusPlusForwardDeclarations.h>
 
+#include <utils/filepath.h>
+
 #include <QByteArray>
 #include <QVector>
 #include <QString>
@@ -69,6 +71,9 @@ public:
     const QString &fileName() const
     { return _fileName; }
 
+    Utils::FilePath filePath() const
+    { return Utils::FilePath::fromString(_fileName); }
+
     void setFileName(const QString &fileName)
     { _fileName = fileName; }
 

src/libs/cplusplus/pp-engine.cpp

@@ -2014,7 +2014,7 @@ void Preprocessor::handleIfDefDirective(bool checkUndefined, PPToken *tk)
 
             // the macro is a feature constraint(e.g. QT_NO_XXX)
             if (checkUndefined && macroName.startsWith("QT_NO_")) {
-                if (macro->fileName() == configurationFileName().pathView()) {
+                if (macro->filePath() == configurationFileName()) {
                     // and it' defined in a pro file (e.g. DEFINES += QT_NO_QOBJECT)
 
                     value = false; // take the branch