cppcheck/lib/checkobsoletefunctions.cpp

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/*
* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2012 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/>.
*/
//---------------------------------------------------------------------------
// Obsolete functions
//---------------------------------------------------------------------------
#include "checkobsoletefunctions.h"
#include "symboldatabase.h"
//---------------------------------------------------------------------------
// Register this check class (by creating a static instance of it)
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namespace {
CheckObsoleteFunctions instance;
}
void CheckObsoleteFunctions::obsoleteFunctions()
{
if (!_settings->isEnabled("style"))
return;
const SymbolDatabase *symbolDatabase = _tokenizer->getSymbolDatabase();
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for (const Token *tok = _tokenizer->tokens(); tok; tok = tok->next()) {
if (tok->isName() && tok->varId()==0 && (tok->next() && tok->next()->str() == "(") &&
(!Token::Match(tok->previous(), ".|::|:|,") || Token::simpleMatch(tok->tokAt(-2), "std :: gets"))) {
// c function declaration?
if ((tok->next()->link()->next() && tok->next()->link()->next()->str() == ";") && (tok->previous() && (tok->previous()->str() == "*" || tok->previous()->isName()))) {
continue;
}
// function declaration?
const Function * function = symbolDatabase->findFunctionByToken(tok);
if (function && function->hasBody) {
_obsoleteStandardFunctions.erase(tok->str());
_obsoletePosixFunctions.erase(tok->str());
continue;
}
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std::map<std::string,std::string>::const_iterator it = _obsoleteStandardFunctions.find(tok->str());
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if (it != _obsoleteStandardFunctions.end()) {
// If checking an old code base it might be uninteresting to update obsolete functions.
// Therefore this is "information"
reportError(tok->next(), Severity::style, "obsoleteFunctions"+it->first, it->second);
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} else {
if (_settings->standards.posix) {
it = _obsoletePosixFunctions.find(tok->str());
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if (it != _obsoletePosixFunctions.end()) {
// If checking an old code base it might be uninteresting to update obsolete functions.
// Therefore this is "information"
reportError(tok->next(), Severity::style, "obsoleteFunctions"+it->first, it->second);
}
}
if (_settings->standards.c >= Standards::C99) {
// alloca : this function is obsolete in C but not in C++ (#4382)
it = _obsoleteC99Functions.find(tok->str());
if (it != _obsoleteC99Functions.end() && !(tok->str() == "alloca" && _tokenizer->isCPP())) {
reportError(tok->next(), Severity::style, "obsoleteFunctions"+it->first, it->second);
}
}
}
}
}
}
//---------------------------------------------------------------------------