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/*
This file is part of the clazy static checker.
Copyright (C) 2015 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com
Author: Sérgio Martins <sergio.martins@kdab.com>
Copyright (C) 2015 Sergio Martins <smartins@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "qdatetimeutc.h"
#include "Utils.h"
#include "checkmanager.h"
#include "StringUtils.h"
#include "FixItUtils.h"
#include <clang/AST/AST.h>
#include <clang/Lex/Lexer.h>
using namespace clang;
using namespace std;
enum Fixit {
FixitNone = 0,
FixitAll = 0x1 // More granularity isn't needed I guess
};
QDateTimeUtc::QDateTimeUtc(const std::string &name, ClazyContext *context)
: CheckBase(name, context)
{
}
void QDateTimeUtc::VisitStmt(clang::Stmt *stmt)
{
CXXMemberCallExpr *secondCall = dyn_cast<CXXMemberCallExpr>(stmt);
if (!secondCall || !secondCall->getMethodDecl())
return;
CXXMethodDecl *secondMethod = secondCall->getMethodDecl();
const string secondMethodName = secondMethod->getQualifiedNameAsString();
const bool isTimeT = secondMethodName == "QDateTime::toTime_t";
if (!isTimeT && secondMethodName != "QDateTime::toUTC")
return;
vector<CallExpr*> chainedCalls = Utils::callListForChain(secondCall);
if (chainedCalls.size() < 2)
return;
CallExpr *firstCall = chainedCalls[chainedCalls.size() - 1];
FunctionDecl *firstFunc = firstCall->getDirectCallee();
if (!firstFunc)
return;
CXXMethodDecl *firstMethod = dyn_cast<CXXMethodDecl>(firstFunc);
if (!firstMethod || firstMethod->getQualifiedNameAsString() != "QDateTime::currentDateTime")
return;
std::string replacement = "::currentDateTimeUtc()";
if (isTimeT) {
replacement += ".toTime_t()";
}
std::vector<FixItHint> fixits;
if (isFixitEnabled(FixitAll)) {
const bool success = FixItUtils::transformTwoCallsIntoOneV2(&m_astContext, secondCall, replacement, fixits);
if (!success) {
queueManualFixitWarning(secondCall->getLocStart(), FixitAll);
}
}
emitWarning(stmt->getLocStart(), "Use QDateTime" + replacement + " instead", fixits);
}
const char *const s_checkName = "qdatetime-utc";
REGISTER_CHECK(s_checkName, QDateTimeUtc, CheckLevel0)
REGISTER_FIXIT(FixitAll, "fix-qdatetime-utc", s_checkName)
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