Unused functions: Refactoring

lib/checkunusedfunctions.cpp

@@ -30,21 +30,6 @@
 // FUNCTION USAGE - Check for unused functions etc
 //---------------------------------------------------------------------------
 
-CheckUnusedFunctions::CheckUnusedFunctions(ErrorLogger *errorLogger)
-{
-    _errorLogger = errorLogger;
-}
-
-CheckUnusedFunctions::~CheckUnusedFunctions()
-{
-
-}
-
-void CheckUnusedFunctions::setErrorLogger(ErrorLogger *errorLogger)
-{
-    _errorLogger = errorLogger;
-}
-
 void CheckUnusedFunctions::parseTokens(const Tokenizer &tokenizer)
 {
     // Function declarations..
@@ -166,7 +151,7 @@ void CheckUnusedFunctions::parseTokens(const Tokenizer &tokenizer)
 
 
 
-void CheckUnusedFunctions::check()
+void CheckUnusedFunctions::check(ErrorLogger * const errorLogger)
 {
     for (std::map<std::string, FunctionUsage>::const_iterator it = _functions.begin(); it != _functions.end(); ++it)
     {
@@ -182,7 +167,7 @@ void CheckUnusedFunctions::check()
                 filename = "";
             else
                 filename = func.filename;
-            _errorLogger->unusedFunction(filename, it->first);
+            unusedFunctionError(errorLogger, filename, it->first);
         }
         else if (! func.usedOtherFile)
         {
@@ -196,7 +181,20 @@ void CheckUnusedFunctions::check()
     }
 }
 
-void CheckUnusedFunctions::unusedFunctionError(const Token *tok)
+void CheckUnusedFunctions::unusedFunctionError(ErrorLogger * const errorLogger, const std::string &filename, const std::string &funcname)
 {
-    reportError(tok, Severity::style, "unusedFunction", "The function 'funcName' is never used");
+    std::list<ErrorLogger::ErrorMessage::FileLocation> locationList;
+    if (!filename.empty())
+    {
+        ErrorLogger::ErrorMessage::FileLocation fileLoc;
+        fileLoc.file = filename;
+        fileLoc.line = 1;
+        locationList.push_back(fileLoc);
+    }
+
+    const ErrorLogger::ErrorMessage errmsg(locationList, Severity::stringify(Severity::style), "The function '" + funcname + "' is never used", "unusedFunction");
+    if (errorLogger)
+        errorLogger->reportErr(errmsg);
+    else
+        reportError(errmsg);
 }

lib/checkunusedfunctions.h

@@ -32,35 +32,33 @@
 class CheckUnusedFunctions: public Check
 {
 public:
-    CheckUnusedFunctions(ErrorLogger *errorLogger = 0);
+    /** @brief This constructor is used when registering the CheckUnusedFunctions */
-    ~CheckUnusedFunctions();
+    CheckUnusedFunctions() : Check()
+    { }
 
-    /**
+    /** @brief This constructor is used when running checks. */
-     * Errors found by this class are forwarded to the given
+    CheckUnusedFunctions(const Tokenizer *tokenizer, const Settings *settings, ErrorLogger *errorLogger)
-     * errorlogger.
+        : Check(tokenizer, settings, errorLogger)
-     * @param errorLogger The errorlogger to be used.
+    { }
-     */
-    void setErrorLogger(ErrorLogger *errorLogger);
 
     // Parse current tokens and determine..
     // * Check what functions are used
     // * What functions are declared
     void parseTokens(const Tokenizer &tokenizer);
 
-
+    void check(ErrorLogger * const errorLogger);
-    void check();
 
 private:
 
     void getErrorMessages()
     {
-        unusedFunctionError(0);
+        unusedFunctionError(0, "", "funcName");
     }
 
     /**
      * Dummy implementation, just to provide error for --errorlist
      */
-    void unusedFunctionError(const Token *tok);
+    void unusedFunctionError(ErrorLogger * const errorLogger, const std::string &filename, const std::string &funcname);
 
     /**
      * Dummy implementation, just to provide error for --errorlist
@@ -80,9 +78,6 @@ private:
         return "Check for functions that are never called\n";
     }
 
-    ErrorLogger *_errorLogger;
-
-
     class FunctionUsage
     {
     public:

lib/cppcheck.cpp

@@ -624,7 +624,6 @@ unsigned int CppCheck::check()
 {
     exitcode = 0;
 
-    _checkUnusedFunctions.setErrorLogger(this);
     std::sort(_filenames.begin(), _filenames.end());
 
     // TODO: Should this be moved out to its own function so all the files can be
@@ -728,7 +727,7 @@ unsigned int CppCheck::check()
         if (_settings._errorsOnly == false)
             _errorLogger.reportOut("Checking usage of global functions..");
 
-        _checkUnusedFunctions.check();
+        _checkUnusedFunctions.check(this);
     }
 
     _errorList.clear();

lib/errorlogger.h

@@ -162,17 +162,6 @@ public:
         return true;
     }
 
-    void unusedFunction(const std::string &filename, const std::string &funcname)
-    {
-        std::list<ErrorLogger::ErrorMessage::FileLocation> loc;
-        ErrorLogger::ErrorMessage::FileLocation fileLoc;
-        fileLoc.file = filename;
-        fileLoc.line = 1;
-        loc.push_back(fileLoc);
-        reportErr(ErrorLogger::ErrorMessage(loc, "style", "The function '" + funcname + "' is never used", "unusedFunction"));
-    }
-
-
     static bool mismatchAllocDealloc()
     {
         return true;

test/testunusedfunctions.cpp

@@ -58,9 +58,11 @@ private:
         errout.str("");
 
         // Check for unused functions..
-        CheckUnusedFunctions checkUnusedFunctions(this);
+        Settings settings;
+        settings._checkCodingStyle = true;
+        CheckUnusedFunctions checkUnusedFunctions(&tokenizer, &settings, this);
         checkUnusedFunctions.parseTokens(tokenizer);
-        checkUnusedFunctions.check();
+        checkUnusedFunctions.check(this);
     }
 
     void incondition()