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/*
This file is part of the clazy static checker.
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 "rule-of-two-soft.h"
#include "Utils.h"
#include "StringUtils.h"
#include <clang/AST/AST.h>
#include <clang/Lex/Lexer.h>
using namespace clang;
using namespace std;
RuleOfTwoSoft::RuleOfTwoSoft(const std::string &name, ClazyContext *context)
: RuleOfBase(name, context)
{
}
void RuleOfTwoSoft::VisitStmt(Stmt *s)
{
if (auto op = dyn_cast<CXXOperatorCallExpr>(s)) {
FunctionDecl *func = op->getDirectCallee();
auto method = func ? dyn_cast<CXXMethodDecl>(func) : nullptr;
if (method && method->getParent() && method->isCopyAssignmentOperator()) {
CXXRecordDecl *record = method->getParent();
const bool hasCopyCtor = record->hasNonTrivialCopyConstructor();
const bool hasCopyAssignOp = record->hasNonTrivialCopyAssignment();
if (hasCopyCtor && !hasCopyAssignOp && !isBlacklisted(record)) {
string msg = "Using assign operator but class " + record->getQualifiedNameAsString() + " has copy-ctor but no assign operator";
emitWarning(getLocStart(s), msg);
}
}
} else if (auto ctorExpr = dyn_cast<CXXConstructExpr>(s)) {
CXXConstructorDecl *ctorDecl = ctorExpr->getConstructor();
CXXRecordDecl *record = ctorDecl->getParent();
if (ctorDecl->isCopyConstructor() && record) {
const bool hasCopyCtor = record->hasNonTrivialCopyConstructor();
const bool hasCopyAssignOp = record->hasNonTrivialCopyAssignment();
if (!hasCopyCtor && hasCopyAssignOp && !isBlacklisted(record)) {
string msg = "Using copy-ctor but class " + record->getQualifiedNameAsString() + " has a trivial copy-ctor but non trivial assign operator";
emitWarning(getLocStart(s), msg);
}
}
}
}
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