put core implementation of $$shadowed() into QMakeGlobals

to make it available to a wider audience

Change-Id: I7a706f8d31de97d8214ba5ea745e19d1dbfda1bc
Reviewed-by: Daniel Teske <daniel.teske@nokia.com>

src/shared/proparser/qmakebuiltins.cpp

@@ -945,17 +945,9 @@ ProStringList QMakeEvaluator::evaluateBuiltinExpand(
         if (args.count() != 1) {
             evalError(fL1S("shadowed(path) requires one argument."));
         } else {
-            QString val = resolvePath(args.at(0).toQString(m_tmp1));
+            QString rstr = m_option->shadowedPath(resolvePath(args.at(0).toQString(m_tmp1)));
-            QString rstr;
+            if (rstr.isEmpty())
-            if (m_option->source_root.isEmpty()) {
-                rstr = val;
-            } else if (val.startsWith(m_option->source_root)
-                       && (val.length() == m_option->source_root.length()
-                           || val.at(m_option->source_root.length()) == QLatin1Char('/'))) {
-                rstr = m_option->build_root + val.mid(m_option->source_root.length());
-            } else {
                 break;
-            }
             ret << (rstr.isSharedWith(m_tmp1) ? args.at(0) : ProString(rstr).setSource(args.at(0)));
         }
         break;

src/shared/proparser/qmakeglobals.cpp

@@ -248,6 +248,18 @@ void QMakeGlobals::setDirectories(const QString &input_dir, const QString &outpu
     }
 }
 
+QString QMakeGlobals::shadowedPath(const QString &fileName) const
+{
+    if (source_root.isEmpty())
+        return fileName;
+    if (fileName.startsWith(source_root)
+        && (fileName.length() == source_root.length()
+            || fileName.at(source_root.length()) == QLatin1Char('/'))) {
+        return build_root + fileName.mid(source_root.length());
+    }
+    return QString();
+}
+
 QString QMakeGlobals::getEnv(const QString &var) const
 {
 #ifdef PROEVALUATOR_SETENV

src/shared/proparser/qmakeglobals.h

@@ -133,6 +133,7 @@ public:
 #endif
 
     QString expandEnvVars(const QString &str) const;
+    QString shadowedPath(const QString &fileName) const;
 
 private:
     QString getEnv(const QString &) const;