lib: allow that file dependencies are taken from Cppcheck after a check

lib/cppcheck.cpp

@@ -338,6 +338,9 @@ void CppCheck::checkFile(const std::string &code, const char FileName[])
             return;
         }
 
+        // Update the _dependencies..
+        _dependencies.insert( _tokenizer.getFiles()->begin()+1, _tokenizer.getFiles()->end() );
+
         // call all "runChecks" in all registered Check classes
         for (std::list<Check *>::iterator it = Check::instances().begin(); it != Check::instances().end(); ++it) {
             if (_settings.terminated())

lib/cppcheck.h

@@ -131,6 +131,13 @@ public:
      */
     void analyseFile(std::istream &f, const std::string &filename);
 
+    /**
+     * @brief Get dependencies. Use this after calling 'check'.
+     */
+    std::set<std::string> dependencies() const {
+        return _dependencies;
+    }
+
 private:
 
     /** @brief Process one file. */
@@ -175,6 +182,7 @@ private:
     bool _useGlobalSuppressions;
     std::string _filename;
     std::string _fileContent;
+    std::set<std::string> _dependencies;
 
     void reportProgress(const std::string &filename, const char stage[], const unsigned int value);