124 lines
4.6 KiB
C++
124 lines
4.6 KiB
C++
/*
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* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2009 Daniel Marjamäki, Reijo Tomperi, Nicolas Le Cam,
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* Leandro Penz, Kimmo Varis
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/
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*/
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//---------------------------------------------------------------------------
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#ifndef CheckMemoryLeakH
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#define CheckMemoryLeakH
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//---------------------------------------------------------------------------
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/** \brief Check for memory leaks */
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#include "tokenize.h"
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#include "settings.h"
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#include "errorlogger.h"
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#include <list>
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#include <vector>
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class CheckMemoryLeakClass
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{
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public:
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CheckMemoryLeakClass(const Tokenizer *tokenizer, const Settings &settings, ErrorLogger *errorLogger);
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~CheckMemoryLeakClass();
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void CheckMemoryLeak();
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private:
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/** What type of allocation are used.. the "Many" means that several types of allocation and deallocation are used */
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enum AllocType { No, Malloc, gMalloc, New, NewArray, FOPEN, POPEN, Many };
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// Extra allocation..
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class AllocFunc
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{
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public:
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const char *funcname;
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AllocType alloctype;
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AllocFunc(const char f[], AllocType a)
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{
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funcname = f;
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alloctype = a;
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}
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};
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void CheckMemoryLeak_ClassMembers_Variable(const std::vector<const char *> &classname, const char varname[]);
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void CheckMemoryLeak_ClassMembers_ParseClass(const Token *tok1, std::vector<const char *> &classname);
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void CheckMemoryLeak_ClassMembers();
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void CheckMemoryLeak_InFunction();
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void CheckMemoryLeak_CheckScope(const Token *Tok1, const char varname[], bool classmember, unsigned int sz);
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/**
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* Simplify code e.g. by replacing empty "{ }" with ";"
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* @param tok first token. The tokens list can be modified.
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*/
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void simplifycode(Token *tok, bool &all);
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/**
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* Delete tokens between begin and end. E.g. if begin = 1
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* and end = 5, tokens 2,3 and 4 would be erased.
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*
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* @param begin Tokens after this will be erased.
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* @param end Tokens before this will be erased.
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*/
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void erase(Token *begin, const Token *end);
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/**
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* Extract a new tokens list that is easier to parse than the "tokens"
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* @param tok start parse token
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* @param callstack callstack
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* @param varname name of variable
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* @param alloctype
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* @param dealloctype
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* @return Newly allocated token array. Caller needs to release reserved
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* memory by calling Tokenizer::deleteTokens(returnValue);
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*/
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Token *getcode(const Token *tok, std::list<const Token *> callstack, const char varname[], AllocType &alloctype, AllocType &dealloctype, bool classmember, bool &all, unsigned int sz);
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/**
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* Check if there is a "!var" match inside a condition
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* @param tok first token to match
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* @param varnames the varname
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* @param endpar if this is true the "!var" must be followed by ")"
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* @return true if match
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*/
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bool notvar(const Token *tok, const char *varnames[], bool endpar = false);
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bool MatchFunctionsThatReturnArg(const Token *tok, const std::string &varname);
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void MemoryLeak(const Token *tok, const char varname[], AllocType alloctype, bool all);
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void MismatchError(const Token *Tok1, const std::list<const Token *> &callstack, const char varname[]);
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const char * call_func(const Token *tok, std::list<const Token *> callstack, const char *varnames[], AllocType &alloctype, AllocType &dealloctype, bool &all, unsigned int sz);
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AllocType GetDeallocationType(const Token *tok, const char *varnames[]);
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AllocType GetAllocationType(const Token *tok2);
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AllocType GetReallocationType(const Token *tok2);
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bool isclass(const Token *typestr);
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const Tokenizer *_tokenizer;
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ErrorLogger *_errorLogger;
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const Settings _settings;
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std::list<AllocFunc> _listAllocFunc;
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// Experimental functionality..
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protected:
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Token *functionParameterCode(const Token *ftok, int parameter);
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};
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//---------------------------------------------------------------------------
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#endif
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