/*

 * Cppcheck - A tool for static C/C++ code analysis

 * Copyright (C) 2007-2017 Cppcheck team.

 *

 * This program is free software: you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program.  If not, see <http://www.gnu.org/licenses/>.

 */

//---------------------------------------------------------------------------

#ifndef checkvaargtH

#define checkvaargtH

//---------------------------------------------------------------------------

#include "check.h"

#include "config.h"

#include <string>

class ErrorLogger;

class Settings;

class Token;

class Tokenizer;

/// @addtogroup Checks

/// @{

/**

 * @brief Checking for misusage of variable argument lists

 */

class CPPCHECKLIB CheckVaarg : public Check {

public:

    CheckVaarg() : Check(myName()) {

    }

    CheckVaarg(const Tokenizer *tokenizer, const Settings *settings, ErrorLogger *errorLogger)

        : Check(myName(), tokenizer, settings, errorLogger) {

    }

    virtual void runSimplifiedChecks(const Tokenizer *tokenizer, const Settings *settings, ErrorLogger *errorLogger) {

        CheckVaarg check(tokenizer, settings, errorLogger);

        check.va_start_argument();

        check.va_list_usage();

    }

    void va_start_argument();

    void va_list_usage();

private:

    void wrongParameterTo_va_start_error(const Token *tok, const std::string& paramIsName, const std::string& paramShouldName);

    void referenceAs_va_start_error(const Token *tok, const std::string& paramName);

    void va_end_missingError(const Token *tok, const std::string& varname);

    void va_list_usedBeforeStartedError(const Token *tok, const std::string& varname);

    void va_start_subsequentCallsError(const Token *tok, const std::string& varname);

    void getErrorMessages(ErrorLogger *errorLogger, const Settings *settings) const {

        CheckVaarg c(nullptr, settings, errorLogger);

        c.wrongParameterTo_va_start_error(nullptr, "arg1", "arg2");

        c.referenceAs_va_start_error(nullptr, "arg1");

        c.va_end_missingError(nullptr, "vl");

        c.va_list_usedBeforeStartedError(nullptr, "vl");

        c.va_start_subsequentCallsError(nullptr, "vl");

    }

    static std::string myName() {

        return "Vaarg";

    }

    std::string classInfo() const {

        return "Check for misusage of variable argument lists:\n"

               "- Wrong parameter passed to va_start()\n"

               "- Reference passed to va_start()\n"

               "- Missing va_end()\n"

               "- Using va_list before it is opened\n"

               "- Subsequent calls to va_start/va_copy()\n";

    }

};

/// @}

//---------------------------------------------------------------------------

#endif // checkvaargtH