848 lines
28 KiB
C++
848 lines
28 KiB
C++
/*
|
|
* 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/
|
|
*/
|
|
|
|
//---------------------------------------------------------------------------
|
|
#include "checkclass.h"
|
|
|
|
#include "tokenize.h"
|
|
#include "token.h"
|
|
#include "errorlogger.h"
|
|
|
|
#include <locale>
|
|
|
|
#include <cstring>
|
|
#include <string>
|
|
#include <sstream>
|
|
#include <algorithm>
|
|
|
|
//---------------------------------------------------------------------------
|
|
|
|
// Register CheckClass..
|
|
namespace
|
|
{
|
|
CheckClass instance;
|
|
}
|
|
|
|
|
|
//---------------------------------------------------------------------------
|
|
|
|
CheckClass::Var *CheckClass::getVarList(const Token *tok1, bool withClasses)
|
|
{
|
|
// Get variable list..
|
|
Var *varlist = NULL;
|
|
unsigned int indentlevel = 0;
|
|
for (const Token *tok = tok1; tok; tok = tok->next())
|
|
{
|
|
if (!tok->next())
|
|
break;
|
|
|
|
if (tok->str() == "{")
|
|
++indentlevel;
|
|
else if (tok->str() == "}")
|
|
{
|
|
if (indentlevel <= 1)
|
|
break;
|
|
--indentlevel;
|
|
}
|
|
|
|
if (indentlevel != 1)
|
|
continue;
|
|
|
|
// "private:" "public:" "protected:" etc
|
|
bool b = bool((*tok->strAt(0) != ':') && strchr(tok->strAt(0), ':') != 0);
|
|
|
|
// Search for start of statement..
|
|
if (! Token::Match(tok, "[;{}]") && ! b)
|
|
continue;
|
|
|
|
// This is the start of a statement
|
|
const Token *next = tok->next();
|
|
const char *varname = 0;
|
|
|
|
// If next token contains a ":".. it is not part of a variable declaration
|
|
if (next->str().find(":") != std::string::npos)
|
|
continue;
|
|
|
|
// Variable declarations that start with "static" shall be ignored..
|
|
if (next->str() == "static")
|
|
continue;
|
|
|
|
// Type definitions shall be ignored..
|
|
if (next->str() == "typedef")
|
|
continue;
|
|
|
|
// Is it a variable declaration?
|
|
if (Token::Match(next, "%type% %var% ;"))
|
|
{
|
|
if (withClasses)
|
|
varname = next->strAt(1);
|
|
else if (next->isStandardType())
|
|
varname = next->strAt(1);
|
|
else if (Token::findmatch(_tokenizer->tokens(), ("enum " + next->str()).c_str()))
|
|
varname = next->strAt(1);
|
|
}
|
|
|
|
// Pointer?
|
|
else if (Token::Match(next, "%type% * %var% ;"))
|
|
{
|
|
varname = next->strAt(2);
|
|
}
|
|
|
|
// Pointer?
|
|
else if (Token::Match(next, "%type% %type% * %var% ;"))
|
|
{
|
|
varname = next->strAt(3);
|
|
}
|
|
|
|
// std::string..
|
|
else if (withClasses && Token::Match(next, "std :: string %var% ;"))
|
|
{
|
|
varname = next->strAt(3);
|
|
}
|
|
|
|
// Container..
|
|
else if (withClasses && Token::Match(next, "std :: %type% <"))
|
|
{
|
|
while (next && next->str() != ">")
|
|
next = next->next();
|
|
if (Token::Match(next, "> %var% ;"))
|
|
varname = next->strAt(1);
|
|
}
|
|
|
|
// If the varname was set in one of the two if-block above, create a entry for this variable..
|
|
if (varname)
|
|
{
|
|
Var *var = new Var(varname, false, varlist);
|
|
varlist = var;
|
|
}
|
|
}
|
|
|
|
return varlist;
|
|
}
|
|
//---------------------------------------------------------------------------
|
|
|
|
void CheckClass::initVar(Var *varlist, const char varname[])
|
|
{
|
|
for (Var *var = varlist; var; var = var->next)
|
|
{
|
|
if (strcmp(var->name, varname) == 0)
|
|
{
|
|
var->init = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
//---------------------------------------------------------------------------
|
|
|
|
void CheckClass::initializeVarList(const Token *tok1, const Token *ftok, Var *varlist, const char classname[], std::list<std::string> &callstack)
|
|
{
|
|
bool Assign = false;
|
|
unsigned int indentlevel = 0;
|
|
|
|
for (; ftok; ftok = ftok->next())
|
|
{
|
|
if (!ftok->next())
|
|
break;
|
|
|
|
// Class constructor.. initializing variables like this
|
|
// clKalle::clKalle() : var(value) { }
|
|
if (indentlevel == 0)
|
|
{
|
|
if (Assign && Token::Match(ftok, "%var% ("))
|
|
{
|
|
initVar(varlist, ftok->str().c_str());
|
|
}
|
|
|
|
Assign |= (ftok->str() == ":");
|
|
}
|
|
|
|
|
|
if (ftok->str() == "{")
|
|
{
|
|
++indentlevel;
|
|
Assign = false;
|
|
}
|
|
|
|
if (ftok->str() == "}")
|
|
{
|
|
if (indentlevel <= 1)
|
|
break;
|
|
--indentlevel;
|
|
}
|
|
|
|
if (indentlevel < 1)
|
|
continue;
|
|
|
|
// Variable getting value from stream?
|
|
if (Token::Match(ftok, ">> %var%"))
|
|
{
|
|
initVar(varlist, ftok->next()->str().c_str());
|
|
}
|
|
|
|
// Before a new statement there is "[{};)=]" or "else"
|
|
if (! Token::Match(ftok, "[{};)=]") && ftok->str() != "else")
|
|
continue;
|
|
|
|
// Using the operator= function to initialize all variables..
|
|
if (Token::simpleMatch(ftok->next(), "* this = "))
|
|
{
|
|
for (Var *var = varlist; var; var = var->next)
|
|
var->init = true;
|
|
break;
|
|
}
|
|
|
|
if (!Token::Match(ftok->next(), "%var%") && !Token::Match(ftok->next(), "this . %var%"))
|
|
continue;
|
|
|
|
// Goto the first token in this statement..
|
|
ftok = ftok->next();
|
|
|
|
// Skip "this->"
|
|
if (Token::simpleMatch(ftok, "this ."))
|
|
ftok = ftok->tokAt(2);
|
|
|
|
// Clearing all variables..
|
|
if (Token::simpleMatch(ftok, "memset ( this ,"))
|
|
{
|
|
for (Var *var = varlist; var; var = var->next)
|
|
var->init = true;
|
|
break;
|
|
}
|
|
|
|
// Calling member function?
|
|
else if (Token::Match(ftok, "%var% ("))
|
|
{
|
|
// No recursive calls!
|
|
if (std::find(callstack.begin(), callstack.end(), ftok->str()) == callstack.end())
|
|
{
|
|
callstack.push_back(ftok->str());
|
|
int i = 0;
|
|
const Token *ftok2 = Tokenizer::findClassFunction(tok1, classname, ftok->str().c_str(), i);
|
|
initializeVarList(tok1, ftok2, varlist, classname, callstack);
|
|
}
|
|
}
|
|
|
|
// Assignment of member variable?
|
|
else if (Token::Match(ftok, "%var% ="))
|
|
{
|
|
initVar(varlist, ftok->str().c_str());
|
|
}
|
|
|
|
// The functions 'clear' and 'Clear' are supposed to initialize variable.
|
|
if (Token::Match(ftok, "%var% . clear|Clear ("))
|
|
{
|
|
initVar(varlist, ftok->str().c_str());
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
//---------------------------------------------------------------------------
|
|
// ClassCheck: Check that all class constructors are ok.
|
|
//---------------------------------------------------------------------------
|
|
|
|
void CheckClass::constructors()
|
|
{
|
|
const char pattern_class[] = "class %var% [{:]";
|
|
|
|
// Locate class
|
|
const Token *tok1 = Token::findmatch(_tokenizer->tokens(), pattern_class);
|
|
while (tok1)
|
|
{
|
|
const char *className[2];
|
|
className[0] = tok1->strAt(1);
|
|
className[1] = 0;
|
|
const Token *classNameToken = tok1->tokAt(1);
|
|
|
|
/** @todo handling of private constructors should be improved */
|
|
bool hasPrivateConstructor = false;
|
|
{
|
|
int indentlevel = 0;
|
|
bool isPrivate = true;
|
|
for (const Token *tok = tok1; tok; tok = tok->next())
|
|
{
|
|
// Indentation
|
|
if (tok->str() == "{")
|
|
++indentlevel;
|
|
|
|
else if (tok->str() == "}")
|
|
{
|
|
--indentlevel;
|
|
if (indentlevel <= 0)
|
|
break;
|
|
}
|
|
|
|
// Parse class contents (indentlevel == 1)..
|
|
if (indentlevel == 1)
|
|
{
|
|
// What section are we in.. private/non-private
|
|
if (tok->str() == "private:")
|
|
isPrivate = true;
|
|
else if (tok->str() == "protected:" || tok->str() == "public:")
|
|
isPrivate = false;
|
|
|
|
// Is there a private constructor?
|
|
else if (isPrivate && Token::simpleMatch(tok, (classNameToken->str() + " (").c_str()))
|
|
{
|
|
hasPrivateConstructor = true;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (hasPrivateConstructor)
|
|
{
|
|
/** @todo Handle private constructors. Right now to avoid
|
|
* false positives we just bail out */
|
|
tok1 = Token::findmatch(tok1->next(), pattern_class);
|
|
continue;
|
|
}
|
|
|
|
// Are there a class constructor?
|
|
std::string tempPattern = "%any% " + classNameToken->str() + " (";
|
|
const Token *constructor_token = Token::findmatch(tok1, tempPattern.c_str());
|
|
while (constructor_token && constructor_token->str() == "~")
|
|
constructor_token = Token::findmatch(constructor_token->next(), tempPattern.c_str());
|
|
|
|
// There are no constructor.
|
|
if (! constructor_token)
|
|
{
|
|
// If "--style" has been given, give a warning
|
|
if (ErrorLogger::noConstructor(*_settings))
|
|
{
|
|
// If the class has member variables there should be an constructor
|
|
Var *varlist = getVarList(tok1, false);
|
|
if (varlist)
|
|
{
|
|
noConstructorError(tok1, classNameToken->str());
|
|
}
|
|
// Delete the varlist..
|
|
while (varlist)
|
|
{
|
|
Var *nextvar = varlist->next;
|
|
delete varlist;
|
|
varlist = nextvar;
|
|
}
|
|
}
|
|
|
|
tok1 = Token::findmatch(tok1->next(), pattern_class);
|
|
continue;
|
|
}
|
|
|
|
// Check constructors
|
|
checkConstructors(tok1, className[0]);
|
|
|
|
// Check assignment operators
|
|
checkConstructors(tok1, "operator =");
|
|
|
|
tok1 = Token::findmatch(tok1->next(), pattern_class);
|
|
}
|
|
}
|
|
|
|
void CheckClass::checkConstructors(const Token *tok1, const char funcname[])
|
|
{
|
|
const char * const className = tok1->strAt(1);
|
|
|
|
// Check that all member variables are initialized..
|
|
bool withClasses = bool(_settings->_showAll && std::string(funcname) == "operator =");
|
|
Var *varlist = getVarList(tok1, withClasses);
|
|
|
|
int indentlevel = 0;
|
|
const Token *constructor_token = Tokenizer::findClassFunction(tok1, className, funcname, indentlevel);
|
|
std::list<std::string> callstack;
|
|
initializeVarList(tok1, constructor_token, varlist, className, callstack);
|
|
while (constructor_token)
|
|
{
|
|
// Check if any variables are uninitialized
|
|
for (Var *var = varlist; var; var = var->next)
|
|
{
|
|
if (var->init)
|
|
continue;
|
|
|
|
// Is it a static member variable?
|
|
std::ostringstream pattern;
|
|
pattern << className << " :: " << var->name << " =";
|
|
if (Token::findmatch(_tokenizer->tokens(), pattern.str().c_str()))
|
|
continue;
|
|
|
|
// It's non-static and it's not initialized => error
|
|
if (Token::simpleMatch(constructor_token, "operator = (") ||
|
|
Token::simpleMatch(constructor_token->tokAt(2), "operator = ("))
|
|
{
|
|
const Token *operStart = 0;
|
|
if (Token::simpleMatch(constructor_token, "operator = ("))
|
|
operStart = constructor_token->tokAt(2);
|
|
else
|
|
operStart = constructor_token->tokAt(4);
|
|
|
|
bool classNameUsed = false;
|
|
for (const Token *operTok = operStart; operTok != operStart->link(); operTok = operTok->next())
|
|
{
|
|
if (operTok->str() == className)
|
|
{
|
|
classNameUsed = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (classNameUsed)
|
|
operatorEqVarError(constructor_token, className, var->name);
|
|
}
|
|
else
|
|
uninitVarError(constructor_token, className, var->name);
|
|
}
|
|
|
|
for (Var *var = varlist; var; var = var->next)
|
|
var->init = false;
|
|
|
|
constructor_token = Tokenizer::findClassFunction(constructor_token->next(), className, funcname, indentlevel);
|
|
callstack.clear();
|
|
initializeVarList(tok1, constructor_token, varlist, className, callstack);
|
|
}
|
|
|
|
// Delete the varlist..
|
|
while (varlist)
|
|
{
|
|
Var *nextvar = varlist->next;
|
|
delete varlist;
|
|
varlist = nextvar;
|
|
}
|
|
}
|
|
|
|
|
|
//---------------------------------------------------------------------------
|
|
// ClassCheck: Unused private functions
|
|
//---------------------------------------------------------------------------
|
|
|
|
void CheckClass::privateFunctions()
|
|
{
|
|
// Locate some class
|
|
for (const Token *tok1 = Token::findmatch(_tokenizer->tokens(), "class %var% {"); tok1; tok1 = Token::findmatch(tok1->next(), "class %var% {"))
|
|
{
|
|
/** @todo check that the whole class implementation is seen */
|
|
// until the todo above is fixed we only check classes that are
|
|
// declared in the source file
|
|
if (tok1->fileIndex() != 0)
|
|
continue;
|
|
|
|
const std::string &classname = tok1->next()->str();
|
|
|
|
// Get private functions..
|
|
std::list<const Token *> FuncList;
|
|
FuncList.clear();
|
|
bool priv = false;
|
|
unsigned int indent_level = 0;
|
|
for (const Token *tok = tok1; tok; tok = tok->next())
|
|
{
|
|
if (Token::Match(tok, "friend %var%"))
|
|
{
|
|
/** @todo Handle friend classes */
|
|
FuncList.clear();
|
|
break;
|
|
}
|
|
|
|
if (tok->str() == "{")
|
|
++indent_level;
|
|
else if (tok->str() == "}")
|
|
{
|
|
if (indent_level <= 1)
|
|
break;
|
|
--indent_level;
|
|
}
|
|
else if (indent_level != 1)
|
|
continue;
|
|
else if (tok->str() == "private:")
|
|
priv = true;
|
|
else if (tok->str() == "public:")
|
|
priv = false;
|
|
else if (tok->str() == "protected:")
|
|
priv = false;
|
|
else if (priv)
|
|
{
|
|
if (Token::Match(tok, "typedef %type% ("))
|
|
tok = tok->tokAt(2);
|
|
|
|
else if (Token::Match(tok, "[:,] %var% ("))
|
|
tok = tok->tokAt(2);
|
|
|
|
else if (Token::Match(tok, "%var% (") &&
|
|
!Token::Match(tok, classname.c_str()))
|
|
{
|
|
FuncList.push_back(tok);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Check that all private functions are used..
|
|
bool HasFuncImpl = false;
|
|
bool inclass = false;
|
|
indent_level = 0;
|
|
const std::string pattern_function(classname + " ::");
|
|
for (const Token *ftok = _tokenizer->tokens(); ftok; ftok = ftok->next())
|
|
{
|
|
if (ftok->str() == "{")
|
|
++indent_level;
|
|
else if (ftok->str() == "}")
|
|
{
|
|
if (indent_level > 0)
|
|
--indent_level;
|
|
if (indent_level == 0)
|
|
inclass = false;
|
|
}
|
|
|
|
if (Token::Match(ftok, ("class " + classname + " :|{").c_str()))
|
|
{
|
|
indent_level = 0;
|
|
inclass = true;
|
|
}
|
|
|
|
// Check member class functions to see what functions are used..
|
|
if ((inclass && indent_level == 1 && Token::Match(ftok, ") const| {")) ||
|
|
(Token::Match(ftok, (classname + " :: ~| %var% (").c_str())))
|
|
{
|
|
while (ftok && ftok->str() != ")")
|
|
ftok = ftok->next();
|
|
if (!ftok)
|
|
break;
|
|
if (Token::Match(ftok, ") : %var% ("))
|
|
{
|
|
while (!Token::Match(ftok->next(), "[{};]"))
|
|
ftok = ftok->next();
|
|
}
|
|
if (!Token::Match(ftok, ") const| {"))
|
|
continue;
|
|
|
|
if (ftok->fileIndex() == 0)
|
|
HasFuncImpl = true;
|
|
|
|
// Parse function..
|
|
int indentlevel2 = 0;
|
|
for (const Token *tok2 = ftok; tok2; tok2 = tok2->next())
|
|
{
|
|
if (tok2->str() == "{")
|
|
++indentlevel2;
|
|
else if (tok2->str() == "}")
|
|
{
|
|
--indentlevel2;
|
|
if (indentlevel2 < 1)
|
|
break;
|
|
}
|
|
else if (Token::Match(tok2, "%var% ("))
|
|
{
|
|
// Remove function from FuncList
|
|
std::list<const Token *>::iterator it = FuncList.begin();
|
|
while (it != FuncList.end())
|
|
{
|
|
if (tok2->str() == (*it)->str())
|
|
FuncList.erase(it++);
|
|
else
|
|
it++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
while (HasFuncImpl && !FuncList.empty())
|
|
{
|
|
// Final check; check if the function pointer is used somewhere..
|
|
const std::string _pattern("return|(|)|,|= " + FuncList.front()->str());
|
|
if (!Token::findmatch(_tokenizer->tokens(), _pattern.c_str()))
|
|
{
|
|
unusedPrivateFunctionError(FuncList.front(), classname, FuncList.front()->str());
|
|
}
|
|
FuncList.pop_front();
|
|
}
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------------------------
|
|
// ClassCheck: Check that memset is not used on classes
|
|
//---------------------------------------------------------------------------
|
|
|
|
void CheckClass::noMemset()
|
|
{
|
|
// Locate all 'memset' tokens..
|
|
for (const Token *tok = _tokenizer->tokens(); tok; tok = tok->next())
|
|
{
|
|
if (!Token::Match(tok, "memset|memcpy|memmove"))
|
|
continue;
|
|
|
|
const char *type = NULL;
|
|
if (Token::Match(tok, "memset ( %var% , %num% , sizeof ( %type% ) )"))
|
|
type = tok->strAt(8);
|
|
else if (Token::Match(tok, "memset ( & %var% , %num% , sizeof ( %type% ) )"))
|
|
type = tok->strAt(9);
|
|
else if (Token::Match(tok, "memset ( %var% , %num% , sizeof ( struct %type% ) )"))
|
|
type = tok->strAt(9);
|
|
else if (Token::Match(tok, "memset ( & %var% , %num% , sizeof ( struct %type% ) )"))
|
|
type = tok->strAt(10);
|
|
else if (Token::Match(tok, "%type% ( %var% , %var% , sizeof ( %type% ) )"))
|
|
type = tok->strAt(8);
|
|
|
|
// No type defined => The tokens didn't match
|
|
if (!(type && type[0]))
|
|
continue;
|
|
|
|
// Warn if type is a class..
|
|
const std::string pattern1(std::string("class ") + type);
|
|
if (Token::findmatch(_tokenizer->tokens(), pattern1.c_str()))
|
|
{
|
|
memsetClassError(tok, tok->str());
|
|
continue;
|
|
}
|
|
|
|
// Warn if type is a struct that contains any std::*
|
|
const std::string pattern2(std::string("struct ") + type);
|
|
for (const Token *tstruct = Token::findmatch(_tokenizer->tokens(), pattern2.c_str()); tstruct; tstruct = tstruct->next())
|
|
{
|
|
if (tstruct->str() == "}")
|
|
break;
|
|
|
|
if (Token::Match(tstruct, "std :: %type% %var% ;"))
|
|
{
|
|
memsetStructError(tok, tok->str(), tstruct->strAt(2));
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
//---------------------------------------------------------------------------
|
|
|
|
|
|
|
|
|
|
//---------------------------------------------------------------------------
|
|
// ClassCheck: "void operator=("
|
|
//---------------------------------------------------------------------------
|
|
|
|
void CheckClass::operatorEq()
|
|
{
|
|
const Token *tok = Token::findmatch(_tokenizer->tokens(), "void operator = (");
|
|
if (tok)
|
|
{
|
|
const Token *tok1 = tok;
|
|
while (tok1 && !Token::Match(tok1, "class %var%"))
|
|
{
|
|
if (tok1->str() == "public:")
|
|
{
|
|
operatorEqReturnError(tok);
|
|
break;
|
|
}
|
|
if (tok1->str() == "private:" || tok1->str() == "protected:")
|
|
break;
|
|
tok1 = tok1->previous();
|
|
}
|
|
}
|
|
}
|
|
//---------------------------------------------------------------------------
|
|
|
|
|
|
|
|
|
|
//---------------------------------------------------------------------------
|
|
// A destructor in a base class should be virtual
|
|
//---------------------------------------------------------------------------
|
|
|
|
void CheckClass::virtualDestructor()
|
|
{
|
|
const char pattern_classdecl[] = "class %var% : %var%";
|
|
|
|
const Token *derived = _tokenizer->tokens();
|
|
while ((derived = Token::findmatch(derived, pattern_classdecl)) != NULL)
|
|
{
|
|
// Check that the derived class has a non empty destructor..
|
|
{
|
|
std::ostringstream destructorPattern;
|
|
destructorPattern << "~ " << derived->strAt(1) << " ( ) {";
|
|
const Token *derived_destructor = Token::findmatch(_tokenizer->tokens(), destructorPattern.str().c_str());
|
|
|
|
// No destructor..
|
|
if (! derived_destructor)
|
|
{
|
|
derived = derived->next();
|
|
continue;
|
|
}
|
|
|
|
// Empty destructor..
|
|
if (Token::Match(derived_destructor, "~ %var% ( ) { }"))
|
|
{
|
|
derived = derived->next();
|
|
continue;
|
|
}
|
|
}
|
|
|
|
const Token *derivedClass = derived->tokAt(1);
|
|
|
|
// Iterate through each base class...
|
|
derived = derived->tokAt(3);
|
|
while (Token::Match(derived, "%var%"))
|
|
{
|
|
bool isPublic(derived->str() == "public");
|
|
|
|
// What kind of inheritance is it.. public|protected|private
|
|
if (Token::Match(derived, "public|protected|private"))
|
|
derived = derived->next();
|
|
|
|
// Name of base class..
|
|
const char *baseName[2];
|
|
baseName[0] = derived->strAt(0);
|
|
baseName[1] = 0;
|
|
|
|
// Update derived so it's ready for the next loop.
|
|
do
|
|
{
|
|
if (derived->str() == "{")
|
|
break;
|
|
|
|
if (derived->str() == ",")
|
|
{
|
|
derived = derived->next();
|
|
break;
|
|
}
|
|
|
|
derived = derived->next();
|
|
}
|
|
while (derived);
|
|
|
|
// If not public inheritance, skip checking of this base class..
|
|
if (! isPublic)
|
|
continue;
|
|
|
|
// Find the destructor declaration for the base class.
|
|
const Token *base = Token::findmatch(_tokenizer->tokens(), (std::string("%any% ~ ") + baseName[0] + " (").c_str());
|
|
while (base && base->str() == "::")
|
|
base = Token::findmatch(base->next(), (std::string("%any% ~ ") + baseName[0] + " (").c_str());
|
|
|
|
const Token *reverseTok = base;
|
|
while (Token::Match(base, "%var%") && base->str() != "virtual")
|
|
base = base->previous();
|
|
|
|
// Check that there is a destructor..
|
|
if (! base)
|
|
{
|
|
// Is the class declaration available?
|
|
base = Token::findmatch(_tokenizer->tokens(), (std::string("class ") + baseName[0] + " {").c_str());
|
|
if (base)
|
|
{
|
|
virtualDestructorError(base, baseName[0], derivedClass->str());
|
|
}
|
|
|
|
continue;
|
|
}
|
|
|
|
// There is a destructor. Check that it's virtual..
|
|
else if (base->str() == "virtual")
|
|
continue;
|
|
|
|
// TODO: This is just a temporary fix, better solution is needed.
|
|
// Skip situations where base class has base classes of its own, because
|
|
// some of the base classes might have virtual destructor.
|
|
// Proper solution is to check all of the base classes. If base class is not
|
|
// found or if one of the base classes has virtual destructor, error should not
|
|
// be printed. See TODO test case "virtualDestructorInherited"
|
|
if (!Token::findmatch(_tokenizer->tokens(), (std::string("class ") + baseName[0] + " {").c_str()))
|
|
continue;
|
|
|
|
// Make sure that the destructor is public (protected or private
|
|
// would not compile if inheritance is used in a way that would
|
|
// cause the bug we are trying to find here.)
|
|
int indent = 0;
|
|
while (reverseTok)
|
|
{
|
|
if (reverseTok->str() == "public:")
|
|
{
|
|
virtualDestructorError(base, baseName[0], derivedClass->str());
|
|
break;
|
|
}
|
|
else if (reverseTok->str() == "protected:" ||
|
|
reverseTok->str() == "private:")
|
|
{
|
|
// No bug, protected/private destructor is allowed
|
|
break;
|
|
}
|
|
else if (reverseTok->str() == "{")
|
|
{
|
|
indent++;
|
|
if (indent >= 1)
|
|
{
|
|
// We have found the start of the class without any sign
|
|
// of "public :" so we can assume that the destructor is not
|
|
// public and there is no bug in the code we are checking.
|
|
break;
|
|
}
|
|
}
|
|
else if (reverseTok->str() == "}")
|
|
indent--;
|
|
|
|
reverseTok = reverseTok->previous();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
//---------------------------------------------------------------------------
|
|
|
|
|
|
|
|
void CheckClass::noConstructorError(const Token *tok, const std::string &classname)
|
|
{
|
|
reportError(tok, Severity::style, "noConstructor", "The class '" + classname + "' has no constructor");
|
|
}
|
|
|
|
void CheckClass::uninitVarError(const Token *tok, const std::string &classname, const std::string &varname)
|
|
{
|
|
reportError(tok, Severity::style, "uninitVar", "Member variable not initialized in the constructor '" + classname + "::" + varname + "'");
|
|
}
|
|
|
|
void CheckClass::operatorEqVarError(const Token *tok, const std::string &classname, const std::string &varname)
|
|
{
|
|
reportError(tok, Severity::possibleStyle, "operatorEqVarError", "Member variable '" + classname + "::" + varname + "' is not assigned a value in '" + classname + "::operator=" + "'");
|
|
}
|
|
|
|
void CheckClass::unusedPrivateFunctionError(const Token *tok, const std::string &classname, const std::string &funcname)
|
|
{
|
|
reportError(tok, Severity::style, "unusedPrivateFunction", "Unused private function '" + classname + "::" + funcname + "'");
|
|
}
|
|
|
|
void CheckClass::memsetClassError(const Token *tok, const std::string &memfunc)
|
|
{
|
|
reportError(tok, Severity::error, "memsetClass", "Using '" + memfunc + "' on class");
|
|
}
|
|
|
|
void CheckClass::memsetStructError(const Token *tok, const std::string &memfunc, const std::string &classname)
|
|
{
|
|
reportError(tok, Severity::error, "memsetStruct", "Using '" + memfunc + "' on struct that contains a 'std::" + classname + "'");
|
|
}
|
|
|
|
void CheckClass::operatorEqReturnError(const Token *tok)
|
|
{
|
|
reportError(tok, Severity::style, "operatorEq", "'operator=' should return something");
|
|
}
|
|
|
|
void CheckClass::virtualDestructorError(const Token *tok, const std::string &Base, const std::string &Derived)
|
|
{
|
|
reportError(tok, Severity::error, "virtualDestructor", "Class " + Base + " which is inherited by class " + Derived + " does not have a virtual destructor");
|
|
}
|
|
|
|
|