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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
/*
* 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/.
*/
#ifndef LO_CLANG_SHARED_PLUGINS
#include "check.hxx"
#include "compat.hxx"
#include "plugin.hxx"
// For std::array or std::vector x, replace &x[0] with x.data().
namespace
{
class Data final : public loplugin::FilteringPlugin<Data>
{
public:
explicit Data(loplugin::InstantiationData const& data)
: FilteringPlugin(data)
{
}
bool VisitUnaryOperator(UnaryOperator const* expr)
{
if (ignoreLocation(expr))
{
return true;
}
if (expr->getOpcode() != UO_AddrOf)
{
return true;
}
auto const e1 = dyn_cast<CXXOperatorCallExpr>(expr->getSubExpr()->IgnoreParenImpCasts());
if (e1 == nullptr)
{
return true;
}
if (e1->getOperator() != OO_Subscript)
{
return true;
}
auto const t = e1->getArg(0)->getType();
auto const chk = loplugin::TypeCheck(t);
if (!(chk.Class("array").StdNamespace() || chk.Class("vector").StdNamespace()))
{
return true;
}
auto const e2 = e1->getArg(1);
if (e2->isValueDependent())
{
return true;
}
APSInt v;
if (!compat::EvaluateAsInt(e2, v, compiler.getASTContext()))
{
return true;
}
if (v != 0)
{
return true;
}
report(DiagnosticsEngine::Warning,
"use 'data' member function to access first element of %0", expr->getExprLoc())
<< t << expr->getSourceRange();
return true;
}
bool preRun() override { return compiler.getLangOpts().CPlusPlus; }
void run() override
{
if (preRun())
{
TraverseDecl(compiler.getASTContext().getTranslationUnitDecl());
}
}
};
static loplugin::Plugin::Registration<Data> data("data");
} // namespace
#endif // LO_CLANG_SHARED_PLUGINS
/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */
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