File: setuphelpers.cpp

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/*
* This file is part of KDevelop
*
* Copyright 2007-2008 David Nolden <david.nolden.kdevelop@art-master.de>
* Copyright 2007 Kris Wong <kris.p.wong@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "setuphelpers.h"

#include <QString>
#include <QStringList>

#include <kdebug.h>
#include <parser/rpp/chartools.h>
#include <parser/rpp/macrorepository.h>

using namespace KDevelop;

namespace CppTools {

void insertMacro(Cpp::ReferenceCountedMacroSet& macros, const rpp::pp_macro& macro)
{
  macros.insert(macro);
}

Cpp::ReferenceCountedMacroSet setupStandardMacros()
{
    Cpp::ReferenceCountedMacroSet macros;
    //Add some macros to be compatible with the gnu c++ compiler
    //Used in several headers like sys/time.h
    insertMacro( macros, rpp::pp_macro("__restrict") );
    insertMacro( macros, rpp::pp_macro("__extension__") );
    //Add macros that allow special treatment when within kdevelop
    insertMacro( macros, rpp::pp_macro("IN_KDEVELOP_PARSER") );
    insertMacro( macros, rpp::pp_macro("IN_IDE_PARSER") );
    {
      //Used in several headers like sys/time.h
      rpp::pp_macro m("__const");
      m.setDefinitionText( "const" );
      insertMacro( macros, m );
    }
    {
      rpp::pp_macro m("__null");
      m.setDefinitionText( "0" );
      insertMacro( macros, m );
      m.name = IndexedString("NULL");
      insertMacro( macros, m );
    }

    {
      //Used in several gcc headers
      rpp::pp_macro m("__inline");
      m.setDefinitionText( "inline" );
      insertMacro( macros, m );
      m.name = IndexedString("__always_inline");
      insertMacro( macros, m );
    }

    {
      //It would be better if the parser could deal with it, for example in class declarations. However it cannot.
      //If we wouldn't need this, macros could be more transparent.
      rpp::pp_macro m("__attribute__");
      m.function_like = true;
      m.fixed = true;
      m.formalsList().append(IndexedString("param"));
      insertMacro( macros, m );
    }
    
    /// The following macros are required for qt only. That's why we set them to become active only when their
    /// 'real' versions become defined in qobjectdefs.h. A slight problem is that they are 'fixed', so they will block
    /// any other macros with the same names.
    {
      rpp::pp_macro m("Q_SLOTS");
      m.setDefinitionText( "__qt_slots__" );
      
      m.defined = false;
      m.defineOnOverride = true;
      m.file = IndexedString("/qobjectdefs.h"); // Only define the macro if it is overriden in this file
      m.fixed = true;
      
      insertMacro( macros, m );

      m.name = IndexedString("Q_PRIVATE_SLOT");
      m.formalsList().append(IndexedString("d"));
      m.formalsList().append(IndexedString("sig"));
      m.function_like = true;
      m.setDefinitionText( "private slots: sig{ d; }; private:" );
      insertMacro( macros, m );
      
      m.name = IndexedString("slots");
      m.setDefinitionText("__qt_slots__");
      m.formalsList().clear();
      m.function_like = false;
      insertMacro( macros, m );

      m.name = IndexedString("Q_SIGNALS");
      m.setDefinitionText( "__qt_signals__" );
      m.formalsList().clear();
      insertMacro( macros, m );

      m.name = IndexedString("signals");
      m.setDefinitionText("__qt_signals__");
      m.formalsList().clear();
      insertMacro( macros, m );

      m.name = IndexedString("SIGNAL");
      m.setDefinitionText("__qt_signal__");
      m.formalsList().clear();
      insertMacro( macros, m );
      
      m.name = IndexedString("SLOT");
      m.setDefinitionText("__qt_slot__");
      m.formalsList().clear();
      insertMacro( macros, m );

      m.name = IndexedString("Q_PROPERTY");
      m.setDefinitionText("__qt_property__");
      m.formalsList().clear();
      insertMacro( macros, m );
    }
    
    {
      // We don't provide a real implementation of offsetof, but at least provide a stub that allows correct use-building for the member.
      rpp::pp_macro m("__builtin_offsetof");
      m.function_like = true;
      m.formalsList().append(IndexedString("TYPE"));
      m.formalsList().append(IndexedString("MEMBER"));
      m.setDefinitionText("(size_t)((void)(TYPE)::MEMBER)");
      insertMacro( macros, m );
    }

    {
      //Simple handling of va_arg to provide useful declarations (at least for GCC std)
      //TODO: test other std headers
      rpp::pp_macro m("__builtin_va_arg");
      m.function_like = true;
      m.formalsList().append(IndexedString("list"));
      m.formalsList().append(IndexedString("type"));
      m.setDefinitionText("(type)list");
      insertMacro( macros, m );
    }

    {
      // see: https://bugs.kde.org/show_bug.cgi?id=325882
      rpp::pp_macro m("__final");
      m.setDefinitionText( "final" );
      insertMacro( macros, m );
    }

    // see: https://bugs.kde.org/show_bug.cgi?id=308556
    insertMacro( macros, rpp::pp_macro("__VA_ARGS__") );

    return macros;
}

}