cppcheck/lib/check.cpp

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/*
* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2022 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 "check.h"
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#include "errorlogger.h"
#include "settings.h"
#include "token.h"
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#include "tokenize.h"
#include "valueflow.h"
#include <cctype>
#include <iostream>
#include <utility>
//---------------------------------------------------------------------------
Check::Check(const std::string &aname)
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: mTokenizer(nullptr), mSettings(nullptr), mErrorLogger(nullptr), mName(aname)
{
auto it = std::find_if(instances().begin(), instances().end(), [&](const Check* i) {
return i->name() > aname;
});
if (it == instances().end())
instances().push_back(this);
else
instances().insert(it, this);
}
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void Check::reportError(const ErrorMessage &errmsg)
{
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std::cout << errmsg.toXML() << std::endl;
}
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void Check::reportError(const std::list<const Token *> &callstack, Severity::SeverityType severity, const std::string &id, const std::string &msg, const CWE &cwe, Certainty::CertaintyLevel certainty)
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{
const ErrorMessage errmsg(callstack, mTokenizer ? &mTokenizer->list : nullptr, severity, id, msg, cwe, certainty);
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if (mErrorLogger)
mErrorLogger->reportErr(errmsg);
else
reportError(errmsg);
}
void Check::reportError(const ErrorPath &errorPath, Severity::SeverityType severity, const char id[], const std::string &msg, const CWE &cwe, Certainty::CertaintyLevel certainty)
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{
const ErrorMessage errmsg(errorPath, mTokenizer ? &mTokenizer->list : nullptr, severity, id, msg, cwe, certainty);
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if (mErrorLogger)
mErrorLogger->reportErr(errmsg);
else
reportError(errmsg);
}
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bool Check::wrongData(const Token *tok, const char *str)
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{
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if (mSettings->daca)
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reportError(tok, Severity::debug, "DacaWrongData", "Wrong data detected by condition " + std::string(str));
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return true;
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}
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std::list<Check *> &Check::instances()
{
#ifdef __SVR4
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// Under Solaris, destructors are called in wrong order which causes a segmentation fault.
// This fix ensures pointer remains valid and reachable until program terminates.
static std::list<Check *> *_instances= new std::list<Check *>;
return *_instances;
#else
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static std::list<Check *> _instances;
return _instances;
#endif
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}
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std::string Check::getMessageId(const ValueFlow::Value &value, const char id[])
{
if (value.condition != nullptr)
return id + std::string("Cond");
if (value.safe)
return std::string("safe") + (char)std::toupper(id[0]) + (id + 1);
return id;
}
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ErrorPath Check::getErrorPath(const Token* errtok, const ValueFlow::Value* value, std::string bug) const
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{
ErrorPath errorPath;
if (!value) {
errorPath.emplace_back(errtok, std::move(bug));
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} else if (mSettings->verbose || mSettings->xml || !mSettings->templateLocation.empty()) {
errorPath = value->errorPath;
errorPath.emplace_back(errtok, std::move(bug));
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} else {
if (value->condition)
errorPath.emplace_back(value->condition, "condition '" + value->condition->expressionString() + "'");
//else if (!value->isKnown() || value->defaultArg)
// errorPath = value->callstack;
errorPath.emplace_back(errtok, std::move(bug));
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}
return errorPath;
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}