cppcheck/checkmemoryleak.h

109 lines
3.9 KiB
C++

/*
* cppcheck - c/c++ syntax checking
* Copyright (C) 2007-2008 Daniel Marjamäki, Reijo Tomperi, Nicolas Le Cam
*
* 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 CheckMemoryLeakH
#define CheckMemoryLeakH
//---------------------------------------------------------------------------
/** \brief Check for memory leaks */
#include "tokenize.h"
#include "settings.h"
#include "errorlogger.h"
#include <list>
#include <vector>
class CheckMemoryLeakClass
{
public:
CheckMemoryLeakClass( const Tokenizer *tokenizer, const Settings &settings, ErrorLogger *errorLogger );
~CheckMemoryLeakClass();
void CheckMemoryLeak();
private:
enum AllocType { No, Malloc, gMalloc, New, NewA, FOPEN, POPEN };
// Extra allocation..
class AllocFunc
{
public:
const char *funcname;
AllocType alloctype;
AllocFunc(const char f[], AllocType a)
{
funcname = f;
alloctype = a;
}
};
void CheckMemoryLeak_ClassMembers_Variable( const std::vector<const char *> &classname, const char varname[] );
void CheckMemoryLeak_ClassMembers_ParseClass( const TOKEN *tok1, std::vector<const char *> &classname );
void CheckMemoryLeak_ClassMembers();
void CheckMemoryLeak_InFunction();
void CheckMemoryLeak_CheckScope( const TOKEN *Tok1, const char varname[] );
/**
* Simplify code e.g. by replacing empty "{ }" with ";"
* @param tok first token. The tokens list can be modified.
*/
void simplifycode(TOKEN *tok);
/**
* Delete tokens between begin and end. E.g. if begin = 1
* and end = 5, tokens 2,3 and 4 would be erased.
*
* @param begin Tokens after this will be erased.
* @param end Tokens before this will be erased.
*/
void erase(TOKEN *begin, const TOKEN *end);
/**
* Extract a new tokens list that is easier to parse than the "tokens"
* @param tok start parse token
* @param callstack callstack
* @param varname name of variable
* @param alloctype
* @param dealloctype
* @return Newly allocated token array. Caller needs to release reserved
* memory by calling Tokenizer::deleteTokens(returnValue);
*/
TOKEN *getcode(const TOKEN *tok, std::list<const TOKEN *> callstack, const char varname[], AllocType &alloctype, AllocType &dealloctype);
bool notvar(const TOKEN *tok, const char *varnames[]);
void instoken(TOKEN *tok, const char str[]);
void MemoryLeak( const TOKEN *tok, const char varname[], AllocType alloctype );
void MismatchError( const TOKEN *Tok1, const std::list<const TOKEN *> &callstack, const char varname[] );
const char * call_func( const TOKEN *tok, std::list<const TOKEN *> callstack, const char *varnames[], AllocType &alloctype, AllocType &dealloctype );
AllocType GetDeallocationType( const TOKEN *tok, const char *varnames[]);
AllocType GetAllocationType( const TOKEN *tok2 );
AllocType GetReallocationType( const TOKEN *tok2 );
bool isclass( const TOKEN *typestr );
const Tokenizer *_tokenizer;
ErrorLogger *_errorLogger;
const Settings _settings;
std::list<AllocFunc> _listAllocFunc;
};
//---------------------------------------------------------------------------
#endif