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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 <cassert>
#include <stack>
#include "check.hxx"
#include "plugin.hxx"
#include "config_clang.h"
/**
In MSVC, non-static constexpr objects are initialized at run-time
So make sure that function-local vars are declared static.
*/
namespace
{
class StaticConstexpr final : public loplugin::FilteringPlugin<StaticConstexpr>
{
public:
explicit StaticConstexpr(loplugin::InstantiationData const& data)
: FilteringPlugin(data)
{
}
bool VisitVarDecl(const VarDecl* varDecl)
{
if (ignoreLocation(varDecl))
return true;
if (!varDecl->isConstexpr())
return true;
if (!varDecl->isLocalVarDecl())
return true;
if (varDecl->isStaticLocal())
return true;
if (auto const functionDecl = dyn_cast_or_null<FunctionDecl>(varDecl->getDeclContext()))
{
// cannot convert these, definition of a static variable in a constexpr function is a C++23 extension
if (functionDecl->isConstexpr())
return true;
}
if (varDecl->getType()->isBuiltinType() || varDecl->getType()->isEnumeralType())
return true;
// ignore the o3tl::getConversionMulDiv stuff
loplugin::TypeCheck tc(varDecl->getType());
if (tc.ClassOrStruct("pair").StdNamespace())
return true;
if (tc.Struct("m_and_d").Namespace("detail").Namespace("o3tl"))
return true;
if (tc.ClassOrStruct("TypedWhichId"))
return true;
if (tc.ClassOrStruct("Color"))
return true;
report(DiagnosticsEngine::Warning,
"function-local constexpr vars should be declared static", varDecl->getBeginLoc())
<< varDecl->getSourceRange();
return true;
}
bool preRun() override
{
if (!compiler.getLangOpts().CPlusPlus)
return false;
return true;
}
private:
void run() override
{
if (preRun())
{
TraverseDecl(compiler.getASTContext().getTranslationUnitDecl());
}
}
};
loplugin::Plugin::Registration<StaticConstexpr> staticconstexpr("staticconstexpr");
}
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */
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