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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.
*/
#ifndef CLAZY_RESERVE_CANDIDATES
#define CLAZY_RESERVE_CANDIDATES
#include "checkbase.h"
#include <vector>
namespace clang {
class ValueDecl;
class Expr;
class CallExpr;
}
/**
* Recommends places that are missing QList::reserve() or QVector::reserve().
*
* Only local variables are contemplated, containers that are members of a class are ignored due to
* high false-positive rate.
*
* There some chance of false-positives.
*/
class ReserveCandidates : public CheckBase
{
public:
ReserveCandidates(const std::string &name, ClazyContext *context);
void VisitStmt(clang::Stmt *stm) override;
private:
bool registerReserveStatement(clang::Stmt *stmt);
bool containerWasReserved(clang::ValueDecl*) const;
bool acceptsValueDecl(clang::ValueDecl *valueDecl) const;
bool expressionIsComplex(clang::Expr *) const;
bool loopIsComplex(clang::Stmt *, bool &isLoop) const;
bool isInComplexLoop(clang::Stmt *, clang::SourceLocation declLocation, bool isMemberVariable) const;
bool isReserveCandidate(clang::ValueDecl *valueDecl, clang::Stmt *loopBody, clang::CallExpr *callExpr) const;
std::vector<clang::ValueDecl*> m_foundReserves;
};
#endif
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