Files
libreoffice/compilerplugins/clang/ptrvector.cxx
Noel Grandin 9f4d23c151 filter out some of the AST in the plugins
by checking if the current namespace decl is in our code, so we have to
scan less stuff, which results in a 10% perf improvement for me

Change-Id: Idf0e30d57b6d0dcd13daa9ed679c28b9d233d387
Reviewed-on: https://gerrit.libreoffice.org/58942
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
2018-08-14 13:02:14 +02:00

83 lines
2.4 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include <memory>
#include <cassert>
#include <string>
#include <iostream>
#include <fstream>
#include <set>
#include "plugin.hxx"
/**
Check for calls to operator== on a std::container< std::unique_ptr >, which is not useful,
because std::container will compare the pointers so it is never true
*/
namespace {
class PtrVector:
public loplugin::FilteringPlugin<PtrVector>
{
public:
explicit PtrVector(loplugin::InstantiationData const & data): FilteringPlugin(data)
{}
virtual void run() override
{
TraverseDecl(compiler.getASTContext().getTranslationUnitDecl());
}
bool shouldVisitTemplateInstantiations () const { return true; }
bool VisitCXXOperatorCallExpr(const CXXOperatorCallExpr* );
};
bool PtrVector::VisitCXXOperatorCallExpr(const CXXOperatorCallExpr* expr)
{
if (ignoreLocation(expr)) {
return true;
}
if (expr->getOperator() != clang::OverloadedOperatorKind::OO_EqualEqual
&& expr->getOperator() != clang::OverloadedOperatorKind::OO_ExclaimEqual)
{
return true;
}
if (isa<CXXNullPtrLiteralExpr>(expr->getArg(1))) {
return true;
}
const Expr* argExpr = expr->getArg(0);
std::string s = argExpr->getType().getDesugaredType(compiler.getASTContext()).getAsString();
if (s.find("iterator") != std::string::npos) {
return true;
}
if (s.find("array") == std::string::npos && s.find("deque") == std::string::npos
&& s.find("list") == std::string::npos && s.find("vector") == std::string::npos
&& s.find("set") == std::string::npos && s.find("map") == std::string::npos
&& s.find("stack") == std::string::npos && s.find("queue") == std::string::npos)
{
return true;
}
if (s.find("unique_ptr") != std::string::npos) {
expr->getArg(1)->dump();
report(
DiagnosticsEngine::Warning,
"do not call operator== on a std container containing a unique_ptr " + s,
expr->getExprLoc());
}
return true;
}
loplugin::Plugin::Registration< PtrVector > X("ptrvector");
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */