libreoffice/autodoc/source/parser/cpp/preproc.cxx

/*************************************************************************
 *
 *  OpenOffice.org - a multi-platform office productivity suite
 *
 *  $RCSfile: preproc.cxx,v $
 *
 *  $Revision: 1.6 $
 *
 *  last change: $Author: obo $ $Date: 2006-09-16 17:04:27 $
 *
 *  The Contents of this file are made available subject to
 *  the terms of GNU Lesser General Public License Version 2.1.
 *
 *
 *    GNU Lesser General Public License Version 2.1
 *    =============================================
 *    Copyright 2005 by Sun Microsystems, Inc.
 *    901 San Antonio Road, Palo Alto, CA 94303, USA
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License version 2.1, as published by the Free Software Foundation.
 *
 *    This library 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
 *    Lesser General Public License for more details.
 *
 *    You should have received a copy of the GNU Lesser General Public
 *    License along with this library; if not, write to the Free Software
 *    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *    MA  02111-1307  USA
 *
 ************************************************************************/

// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_autodoc.hxx"


#include <precomp.h>
#include "preproc.hxx"


// NOT FULLY DEFINED SERVICES
#include <cosv/template/tpltools.hxx>
#include "all_toks.hxx"
#include "defdescr.hxx"
#include <tools/tkpchars.hxx>
#include "c_rcode.hxx"


namespace cpp
{


PreProcessor::F_TOKENPROC PreProcessor::aTokProcs[PreProcessor::state_MAX] =
    {
        &PreProcessor::On_plain,
        &PreProcessor::On_expect_macro_bracket_left,
        &PreProcessor::On_expect_macro_param
    };


PreProcessor::PreProcessor()
    :   pCppExplorer(0),
        pSourceText(0),
        pCurValidDefines(0),
        // aTokens,
        eState(plain),
        pCurMacro(0),
        dpCurMacroName(0),
        // aCurMacroParams,
        aCurParamText(60000),
        nBracketInParameterCounter(0)
        // aBlockedMacroNames
{
}

PreProcessor::~PreProcessor()
{
}

void
PreProcessor::AssignPartners( CodeExplorer &      o_rCodeExplorer,
                              CharacterSource &   o_rCharSource,
                              const MacroMap &    i_rCurValidDefines )
{
    pCppExplorer = &o_rCodeExplorer;
    pSourceText = &o_rCharSource;
    pCurValidDefines = &i_rCurValidDefines;
}

void
PreProcessor::Process_Token( cpp::Token & let_drToken )
{
    csv_assert(pCppExplorer != 0);  // Implies pSourceText and pCurValidDefines.

    (this->*aTokProcs[eState])(let_drToken);
}

void
PreProcessor::On_plain( cpp::Token & let_drToken )
{
    if ( let_drToken.TypeId() == Tid_Identifier )
    {
        if (CheckForDefine(let_drToken))
            return;
    }

    pCppExplorer->Process_Token(let_drToken);
}

void
PreProcessor::On_expect_macro_bracket_left( cpp::Token & let_drToken )
{
    if ( let_drToken.TypeId() == Tid_Bracket_Left )
    {
        aCurParamText.seekp(0);
        eState = expect_macro_param;
    }
    else
    {
        pCppExplorer->Process_Token(*dpCurMacroName);
        dpCurMacroName = 0;
        pCppExplorer->Process_Token(let_drToken);
        eState = plain;
    }
}

void
PreProcessor::On_expect_macro_param( cpp::Token & let_drToken )
{
    if ( let_drToken.TypeId() == Tid_Bracket_Left )
        nBracketInParameterCounter++;
    else if ( let_drToken.TypeId() == Tid_Bracket_Right )
    {
        if ( nBracketInParameterCounter > 0 )
            nBracketInParameterCounter--;
        else
        {
            if ( NOT csv::no_str(aCurParamText.c_str()) )
            {
                aCurMacroParams.push_back( String(aCurParamText.c_str()) );
            }
            csv_assert( aCurMacroParams.size() == pCurMacro->ParamCount() );

            InterpretMacro();
            eState = plain;
            return;
        }
    }
    else if ( let_drToken.TypeId() == Tid_Comma AND nBracketInParameterCounter == 0 )
    {
        aCurMacroParams.push_back( udmstri(aCurParamText.c_str()) );
        aCurParamText.seekp(0);
        return;
    }

    // KORR FUTURE:
    //  If in future whitespace is parsed also, that should match exactly and the
    //  safety spaces, " ", here should be removed.
    aCurParamText << let_drToken.Text() << " ";
}

bool
PreProcessor::CheckForDefine( cpp::Token & let_drToken )
{
    udmstri sTokenText(let_drToken.Text());
     pCurMacro = csv::value_from_map( *pCurValidDefines, sTokenText );
    if (pCurMacro == 0 )
        return false;
    for ( StringVector::const_iterator it = aBlockedMacroNames.begin();
          it != aBlockedMacroNames.end();
          ++it )
    {
        if ( strcmp( (*it).c_str(), let_drToken.Text() ) == 0 )
            return false;
    }

    if ( pCurMacro->DefineType() == DefineDescription::type_define )
    {
        delete &let_drToken;

        aCurParamText.seekp(0);
        pCurMacro->GetDefineText(aCurParamText);

        if ( aCurParamText.tellp() > 1 )
            pSourceText->InsertTextAtCurPos(aCurParamText.c_str());
    }
    else // ( pCurMacro->DefineType() == DefineDescription::type_macro )
    {
        dpCurMacroName = &let_drToken;
        eState = expect_macro_bracket_left;
        csv::erase_container( aCurMacroParams );
        aCurParamText.seekp(0);
        nBracketInParameterCounter = 0;
    }  // endif

    return true;
}

void
PreProcessor::UnblockMacro( const char * i_sMacroName )
{
    for ( StringVector::iterator it = aBlockedMacroNames.begin();
          it != aBlockedMacroNames.end();
          ++it )
    {
        if ( strcmp( (*it), i_sMacroName ) == 0 )
        {
            aBlockedMacroNames.erase(it);
            break;
        }
    }   /// end for
}

void
PreProcessor::InterpretMacro()
{
    aCurParamText.seekp(0);
    pCurMacro->GetMacroText(aCurParamText, aCurMacroParams);

    if ( NOT csv::no_str(aCurParamText.c_str()) )
    {
        aCurParamText.seekp(-1, csv::cur);
        aCurParamText << " #unblock-" << dpCurMacroName->Text() << " ";

        pSourceText->InsertTextAtCurPos(aCurParamText.c_str());
        udmstri sCurMacroName(dpCurMacroName->Text());
        aBlockedMacroNames.insert( aBlockedMacroNames.begin(), sCurMacroName );
    }

    delete dpCurMacroName;
    dpCurMacroName = 0;
    pCurMacro = 0;
    csv::erase_container(aCurMacroParams);
    aCurParamText.seekp(0);
}


}   // end namespace cpp