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/* -*- 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 "config_clang.h"
#include "plugin.hxx"
#include "check.hxx"
/**
plugin to help to when converting code from
sal_uIntPtr/sal_uLong/sal_Long/long/unsigned long
to something more precise.
*/
namespace
{
class ConvertLong : public loplugin::FilteringPlugin<ConvertLong>
{
public:
explicit ConvertLong(loplugin::InstantiationData const& data)
: FilteringPlugin(data)
{
}
virtual void run() override
{
std::string fn(handler.getMainFileName());
loplugin::normalizeDotDotInFilePath(fn);
// using sal_uIntPtr as in-between type when converting void* to rtl_TextEncoding
if (fn == SRCDIR "/sal/osl/unx/thread.cxx")
return;
// too much magic
if (fn == SRCDIR "/sal/rtl/alloc_arena.cxx")
return;
if (fn == SRCDIR "/sal/rtl/alloc_cache.cxx")
return;
// TODO not sure what is going on here
if (fn == SRCDIR "/tools/source/generic/bigint.cxx")
return;
TraverseDecl(compiler.getASTContext().getTranslationUnitDecl());
}
bool VisitVarDecl(VarDecl const*);
bool TraverseFunctionDecl(FunctionDecl*);
private:
bool isInterestingType(QualType qt);
};
bool ConvertLong::TraverseFunctionDecl(FunctionDecl* functionDecl)
{
// ignore template stuff
if (functionDecl->getTemplatedKind() != FunctionDecl::TK_NonTemplate)
{
return true;
}
return RecursiveASTVisitor::TraverseFunctionDecl(functionDecl);
}
bool ConvertLong::VisitVarDecl(VarDecl const* varDecl)
{
if (ignoreLocation(varDecl))
return true;
StringRef fileName{ getFilenameOfLocation(varDecl->getLocation()) };
if (loplugin::isSamePathname(fileName, SRCDIR "/include/tools/bigint.hxx"))
return true;
if (loplugin::isSamePathname(fileName, SRCDIR "/include/tools/solar.h"))
return true;
if (!varDecl->hasInit())
return true;
if (isa<IntegerLiteral>(varDecl->getInit()->IgnoreParenImpCasts()))
return true;
// ignore int x = -1;
if (isa<UnaryOperator>(varDecl->getInit()->IgnoreParenImpCasts()))
return true;
auto lhsType = varDecl->getType();
auto rhsType = varDecl->getInit()->IgnoreParenImpCasts()->getType();
if (lhsType.getLocalUnqualifiedType() == rhsType)
return true;
if (!rhsType.getTypePtrOrNull())
return true;
if (isInterestingType(rhsType))
return true;
if (!isInterestingType(lhsType))
return true;
if (rhsType->isFloatingType()) // TODO
return true;
report(DiagnosticsEngine::Warning, "rather replace type of decl %0 with %1",
varDecl->getLocation())
<< lhsType << rhsType << varDecl->getSourceRange();
//lhsType->dump();
//varDecl->dump();
return true;
}
bool ConvertLong::isInterestingType(QualType qt)
{
auto tc = loplugin::TypeCheck(qt);
if (tc.Typedef())
{
TypedefType const* typedefType = qt->getAs<TypedefType>();
auto name = typedefType->getDecl()->getName();
if (name == "sal_uLong")
return true;
// because this is a typedef to long on 64-bit Linux
if (name == "sal_Int64" || name == "sal_uInt64" || name.find("size_t") != StringRef::npos)
return false;
}
if (isa<AutoType>(qt.getTypePtr()))
return false;
auto unqual = qt.getUnqualifiedType();
if (unqual->isSpecificBuiltinType(BuiltinType::Kind::Long)
|| unqual->isSpecificBuiltinType(BuiltinType::Kind::ULong))
{
return true;
}
if (!tc.Typedef())
return false;
TypedefType const* typedefType = qt->getAs<TypedefType>();
auto name = typedefType->getDecl()->getName();
return name == "sal_uIntPtr" || name == "sal_IntPtr";
}
loplugin::Plugin::Registration<ConvertLong> X("convertlong", false);
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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