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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 "plugin.hxx"
#include "check.hxx"
/**
plugin to help to when converting code from sal_uIntPtr to something more precise.
*/
namespace {
class ConvertUIntPtr:
public RecursiveASTVisitor<ConvertUIntPtr>, public loplugin::Plugin
{
public:
explicit ConvertUIntPtr(loplugin::InstantiationData const & data):
Plugin(data) {}
virtual void run() override
{
std::string fn( compiler.getSourceManager().getFileEntryForID(
compiler.getSourceManager().getMainFileID())->getName() );
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 VisitImplicitCastExpr(ImplicitCastExpr const *);
private:
bool isIntPtr(QualType qt);
};
bool ConvertUIntPtr::VisitImplicitCastExpr(ImplicitCastExpr const * castExpr)
{
if (ignoreLocation(castExpr))
return true;
if (castExpr->getCastKind() == CK_LValueToRValue)
return true;
if (isa<IntegerLiteral>(castExpr->IgnoreCasts()))
return true;
// ignore literals like "-123"
if (isa<UnaryOperator>(castExpr->IgnoreCasts()))
return true;
bool isSrcIntPtr = isIntPtr(castExpr->getSubExpr()->getType());
bool isDestIntPtr = isIntPtr(castExpr->getType());
if (!isSrcIntPtr && !isDestIntPtr)
return true;
// exclude casting between sal_uIntPtr <-> sal_IntPtr
if (isSrcIntPtr && isDestIntPtr)
return true;
if (isSrcIntPtr && loplugin::TypeCheck(castExpr->getType()).AnyBoolean())
return true;
report(
DiagnosticsEngine::Warning,
"cast from %0 to %1",
castExpr->getExprLoc())
<< castExpr->getSubExpr()->getType()
<< castExpr->getType()
<< castExpr->getSourceRange();
return true;
}
bool ConvertUIntPtr::isIntPtr(QualType qt)
{
auto tc = loplugin::TypeCheck(qt);
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< ConvertUIntPtr > X("convertuintptr", false);
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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