cppcheck/lib/checkclass.h

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/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2009 Daniel Marjamäki and 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 CheckClassH
#define CheckClassH
//---------------------------------------------------------------------------
#include "check.h"
#include "settings.h"
class Token;
/// @addtogroup Checks
/// @{
class CheckClass : public Check
{
public:
/** This constructor is used when registering the CheckClass */
CheckClass() : Check()
{ }
/** This constructor is used when running checks.. */
CheckClass(const Tokenizer *tokenizer, const Settings *settings, ErrorLogger *errorLogger)
: Check(tokenizer, settings, errorLogger)
{ }
void runChecks(const Tokenizer *tokenizer, const Settings *settings, ErrorLogger *errorLogger)
{
CheckClass checkClass(tokenizer, settings, errorLogger);
checkClass.noMemset();
}
void runSimplifiedChecks(const Tokenizer *tokenizer, const Settings *settings, ErrorLogger *errorLogger)
{
CheckClass checkClass(tokenizer, settings, errorLogger);
if (settings->_checkCodingStyle)
{
checkClass.constructors();
checkClass.operatorEq();
checkClass.privateFunctions();
checkClass.operatorEqRetRefThis();
if (settings->_showAll)
{
checkClass.thisSubtraction();
checkClass.operatorEqToSelf();
}
}
checkClass.virtualDestructor();
}
// Check that all class constructors are ok.
void constructors();
// Check that all private functions are called.
void privateFunctions();
// Check that the memsets are valid.
// The 'memset' function can do dangerous things if used wrong.
// Important: The checking doesn't work on simplified tokens list.
void noMemset();
// 'operator=' should return something..
void operatorEq(); // Warning upon "void operator=(.."
// 'operator=' should return reference to *this
void operatorEqRetRefThis(); // Warning upon no "return *this;"
// 'operator=' should check for assignment to self
void operatorEqToSelf(); // Warning upon no check for assignment to self
// The destructor in a base class should be virtual
void virtualDestructor();
void thisSubtraction();
private:
class Var
{
public:
Var(const char *name = 0, bool init = false, bool priv = false, Var *next = 0)
{
this->name = name;
this->init = init;
this->priv = priv;
this->next = next;
}
const char *name;
bool init;
bool priv;
Var *next;
};
void initializeVarList(const Token *tok1, const Token *ftok, Var *varlist, const char classname[], std::list<std::string> &callstack, bool isStruct);
void initVar(Var *varlist, const char varname[]);
Var *getVarList(const Token *tok1, bool withClasses, bool isStruct);
// Check constructors for a specified class
void checkConstructors(const Token *tok1, const char funcname[], bool hasPrivateConstructor, bool isStruct);
// Reporting errors..
void noConstructorError(const Token *tok, const std::string &classname, bool isStruct);
void uninitVarError(const Token *tok, const std::string &classname, const std::string &varname, bool hasPrivateConstructor);
void operatorEqVarError(const Token *tok, const std::string &classname, const std::string &varname);
void unusedPrivateFunctionError(const Token *tok, const std::string &classname, const std::string &funcname);
void memsetClassError(const Token *tok, const std::string &memfunc);
void memsetStructError(const Token *tok, const std::string &memfunc, const std::string &classname);
void operatorEqReturnError(const Token *tok);
void virtualDestructorError(const Token *tok, const std::string &Base, const std::string &Derived);
void thisSubtractionError(const Token *tok);
void operatorEqRetRefThisError(const Token *tok);
void operatorEqToSelfError(const Token *tok);
void getErrorMessages()
{
noConstructorError(0, "classname", false);
uninitVarError(0, "classname", "varname", false);
operatorEqVarError(0, "classname", "");
unusedPrivateFunctionError(0, "classname", "funcname");
memsetClassError(0, "memfunc");
memsetStructError(0, "memfunc", "classname");
operatorEqReturnError(0);
virtualDestructorError(0, "Base", "Derived");
thisSubtractionError(0);
operatorEqRetRefThisError(0);
operatorEqToSelfError(0);
}
std::string name() const
{
return "Class";
}
std::string classInfo() const
{
return "Check the code for each class.\n"
"* Missing constructors\n"
"* Are all variables initialized by the constructors?\n"
"* [[CheckMemset|Warn if memset, memcpy etc are used on a class]]\n"
"* If it's a base class, check that the destructor is virtual\n"
"* The operator= should return a constant reference to itself\n"
"* Are there unused private functions\n";
}
};
/// @}
//---------------------------------------------------------------------------
#endif