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.
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*
* 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/>.
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*/
//---------------------------------------------------------------------------
#ifndef CheckClassH
#define CheckClassH
//---------------------------------------------------------------------------
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#include "check.h"
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#include "settings.h"
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class Token;
/// @addtogroup Checks
/// @{
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class CheckClass : public Check
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{
public:
/** This constructor is used when registering the CheckClass */
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CheckClass() : Check()
{ }
/** This constructor is used when running checks.. */
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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)
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{
CheckClass checkClass(tokenizer, settings, errorLogger);
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if (settings->_checkCodingStyle)
{
checkClass.constructors();
checkClass.operatorEq();
checkClass.privateFunctions();
if (settings->_showAll)
checkClass.thisSubtraction();
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}
checkClass.virtualDestructor();
}
// Check that all class constructors are ok.
void constructors();
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// Check that all private functions are called.
void privateFunctions();
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// 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();
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// 'operator=' should return something..
void operatorEq(); // Warning upon "void operator=(.."
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// The destructor in a base class should be virtual
void virtualDestructor();
void thisSubtraction();
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private:
class Var
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{
public:
Var(const char *name = 0, bool init = false, Var *next = 0)
{
this->name = name;
this->init = init;
this->next = next;
}
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const char *name;
bool init;
Var *next;
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};
void initializeVarList(const Token *tok1, const Token *ftok, Var *varlist, const char classname[], std::list<std::string> &callstack);
void initVar(Var *varlist, const char varname[]);
Var *getVarList(const Token *tok1, bool withClasses);
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// Check constructors for a specified class
void checkConstructors(const Token *tok1, const char funcname[], bool hasPrivateConstructor);
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// Reporting errors..
void noConstructorError(const Token *tok, const std::string &classname);
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);
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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);
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void virtualDestructorError(const Token *tok, const std::string &Base, const std::string &Derived);
void thisSubtractionError(const Token *tok);
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void getErrorMessages()
{
noConstructorError(0, "classname");
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);
}
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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"
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" * [[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";
}
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};
/// @}
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//---------------------------------------------------------------------------
#endif