kicad/pcbnew/pcb_parser.cpp

/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2012 CERN
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU 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, you may find one here:
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * or you may search the http://www.gnu.org website for the version 2 license,
 * or you may write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 */

/**
 * @file pcb_parser.cpp
 * @brief Pcbnew s-expression file format parser implementation.
 */

#include <errno.h>
#include <common.h>
#include <macros.h>
#include <convert_from_iu.h>
#include <trigo.h>
#include <3d_struct.h>
#include <class_title_block.h>

#include <class_board.h>
#include <class_dimension.h>
#include <class_drawsegment.h>
#include <class_edge_mod.h>
#include <class_mire.h>
#include <class_module.h>
#include <class_netclass.h>
#include <class_pad.h>
#include <class_track.h>
#include <class_zone.h>
#include <kicad_plugin.h>
#include <pcb_plot_params.h>
#include <zones.h>
#include <pcb_parser.h>

using namespace std;


void PCB_PARSER::init()
{
    m_layerMap.clear();

    // Add untranslated default (i.e. english) layernames.
    // Some may be overridden later if parsing a board rather than a footprint.
    // The english name will survive if parsing only a footprint.
    for( int layerNdx = 0;  layerNdx < NB_LAYERS;  ++layerNdx )
    {
        wxString untranslated = BOARD::GetDefaultLayerName( layerNdx, false );
        m_layerMap[ untranslated ] = layerNdx;
    }
}


double PCB_PARSER::parseDouble() throw( IO_ERROR )
{
    char* tmp;

    errno = 0;

    double fval = strtod( CurText(), &tmp );

    if( errno )
    {
        wxString error;
        error.Printf( _( "invalid floating point number in\nfile: '%s'\nline: %d\noffset: %d" ),
                      GetChars( CurSource() ), CurLineNumber(), CurOffset() );

        THROW_IO_ERROR( error );
    }

    if( CurText() == tmp )
    {
        wxString error;
        error.Printf( _( "missing floating point number in\nfile: '%s'\nline: %d\noffset: %d" ),
                      GetChars( CurSource() ), CurLineNumber(), CurOffset() );

        THROW_IO_ERROR( error );
    }

    return fval;
}


bool PCB_PARSER::parseBool() throw( PARSE_ERROR )
{
    T token = NextTok();

    if( token == T_yes )
        return true;
    else if( token == T_no )
        return false;
    else
        Expecting( "yes or no" );

    return false;
}


wxPoint PCB_PARSER::parseXY() throw( PARSE_ERROR )
{
    if( CurTok() != T_LEFT )
        NeedLEFT();

    wxPoint pt;
    T token = NextTok();

    if( token != T_xy )
        Expecting( T_xy );

    pt.x = parseBoardUnits( "X coordinate" );
    pt.y = parseBoardUnits( "Y coordinate" );

    NeedRIGHT();

    return pt;
}


void PCB_PARSER::parseXY( int* aX, int* aY ) throw( PARSE_ERROR )
{
    wxPoint pt = parseXY();

    if( aX )
        *aX = pt.x;

    if( aY )
        *aY = pt.y;
}


void PCB_PARSER::parseEDA_TEXT( EDA_TEXT* aText ) throw( PARSE_ERROR )
{
    wxCHECK_RET( CurTok() == T_effects,
                 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as EDA_TEXT." ) );

    T token;

    for( token = NextTok();  token != T_RIGHT;  token = NextTok() )
    {
        if( token != T_LEFT )
            Expecting( T_LEFT );

        token = NextTok();

        switch( token )
        {
        case T_font:
            for( token = NextTok();  token != T_RIGHT;  token = NextTok() )
            {
                if( token == T_LEFT )
                    continue;

                switch( token )
                {
                case T_size:
                {
                    wxSize sz;
                    sz.SetHeight( parseBoardUnits( "text height" ) );
                    sz.SetWidth( parseBoardUnits( "text width" ) );
                    aText->SetSize( sz );
                    NeedRIGHT();
                    break;
                }

                case T_thickness:
                    aText->SetThickness( parseBoardUnits( "text thickness" ) );
                    NeedRIGHT();
                    break;

                case T_bold:
                    aText->SetBold( true );
                    break;

                case T_italic:
                    aText->SetItalic( true );
                    break;

                default:
                    Expecting( "size, bold, or italic" );
                }
            }

            break;

        case T_justify:
            for( token = NextTok();  token != T_RIGHT;  token = NextTok() )
            {
                if( token == T_LEFT )
                    continue;

                switch( token )
                {
                case T_left:
                    aText->SetHorizJustify( GR_TEXT_HJUSTIFY_LEFT );
                    break;

                case T_right:
                    aText->SetHorizJustify( GR_TEXT_HJUSTIFY_RIGHT );
                    break;

                case T_top:
                    aText->SetVertJustify( GR_TEXT_VJUSTIFY_TOP );
                    break;

                case T_bottom:
                    aText->SetVertJustify( GR_TEXT_VJUSTIFY_BOTTOM );
                    break;

                case T_mirror:
                    aText->SetMirrored( true );
                    break;

                default:
                    Expecting( "left, right, top, bottom, or mirror" );
                }

            }
            break;

        case T_hide:
            aText->SetVisible( false );
            break;

        default:
            Expecting( "font, justify, or hide" );
        }
    }
}


S3D_MASTER* PCB_PARSER::parse3DModel() throw( PARSE_ERROR )
{
    wxCHECK_MSG( CurTok() == T_model, NULL,
                 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as S3D_MASTER." ) );

    T token;

    auto_ptr< S3D_MASTER > n3D( new S3D_MASTER( NULL ) );

    NeedSYMBOL();
    n3D->m_Shape3DName = FromUTF8();

    for( token = NextTok();  token != T_RIGHT;  token = NextTok() )
    {
        if( token != T_LEFT )
            Expecting( T_LEFT );

        token = NextTok();

        switch( token )
        {
        case T_at:
            NeedLEFT();
            token = NextTok();

            if( token != T_xyz )
                Expecting( T_xyz );

            n3D->m_MatPosition.x = parseDouble( "x value" );
            n3D->m_MatPosition.y = parseDouble( "y value" );
            n3D->m_MatPosition.z = parseDouble( "z value" );
            NeedRIGHT();
            break;

        case T_scale:
            NeedLEFT();
            token = NextTok();

            if( token != T_xyz )
                Expecting( T_xyz );

            n3D->m_MatScale.x = parseDouble( "x value" );
            n3D->m_MatScale.y = parseDouble( "y value" );
            n3D->m_MatScale.z = parseDouble( "z value" );
            NeedRIGHT();
            break;

        case T_rotate:
            NeedLEFT();
            token = NextTok();

            if( token != T_xyz )
                Expecting( T_xyz );

            n3D->m_MatRotation.x = parseDouble( "x value" );
            n3D->m_MatRotation.y = parseDouble( "y value" );
            n3D->m_MatRotation.z = parseDouble( "z value" );
            NeedRIGHT();
            break;

        default:
            Expecting( "at, scale, or rotate" );
        }

        NeedRIGHT();
    }

    return n3D.release();
}


BOARD_ITEM* PCB_PARSER::Parse() throw( IO_ERROR, PARSE_ERROR )
{
    T token;
    BOARD_ITEM* item;
    LOCALE_IO   toggle;     // toggles on, then off, the C locale.

    token = NextTok();

    if( token != T_LEFT )
        Expecting( T_LEFT );

    switch( NextTok() )
    {
    case T_kicad_pcb:
        if( m_board == NULL )
            m_board = new BOARD();

        item = (BOARD_ITEM*) parseBOARD();
        break;

    case T_module:
        item = (BOARD_ITEM*) parseMODULE();
        break;

    default:
        wxString err;
        err.Printf( _( "unknown token \"%s\"" ), GetChars( FromUTF8() ) );
        THROW_PARSE_ERROR( err, CurSource(), CurLine(), CurLineNumber(), CurOffset() );
    }

    return item;
}


BOARD* PCB_PARSER::parseBOARD() throw( IO_ERROR, PARSE_ERROR )
{
    T token;

    parseHeader();

    for( token = NextTok();  token != T_RIGHT;  token = NextTok() )
    {
        if( token != T_LEFT )
            Expecting( T_LEFT );

        token = NextTok();

        switch( token )
        {
        case T_general:
            parseGeneralSection();
            break;

        case T_page:
            parsePAGE_INFO();
            break;

        case T_title_block:
            parseTITLE_BLOCK();
            break;

        case T_layers:
            parseLayers();
            break;

        case T_setup:
            parseSetup();
            break;

        case T_net:
            parseNETINFO_ITEM();
            break;

        case T_net_class:
            parseNETCLASS();
            break;

        case T_gr_arc:
        case T_gr_circle:
        case T_gr_curve:
        case T_gr_line:
        case T_gr_poly:
            m_board->Add( parseDRAWSEGMENT(), ADD_APPEND );
            break;

        case T_gr_text:
            m_board->Add( parseTEXTE_PCB(), ADD_APPEND );
            break;

        case T_dimension:
            m_board->Add( parseDIMENSION(), ADD_APPEND );
            break;

        case T_module:
            m_board->Add( parseMODULE(), ADD_APPEND );
            break;

        case T_segment:
            m_board->m_Track.Append( parseTRACK() );
            break;

        case T_via:
            m_board->m_Track.Append( parseSEGVIA() );
            break;

        case T_zone:
            m_board->Add( parseZONE_CONTAINER(), ADD_APPEND );
            break;

        case T_target:
            m_board->Add( parsePCB_TARGET(), ADD_APPEND );
            break;

        default:
            wxString err;
            err.Printf( _( "unknown token \"%s\"" ), GetChars( FromUTF8() ) );
            THROW_PARSE_ERROR( err, CurSource(), CurLine(), CurLineNumber(), CurOffset() );
        }
    }

    return m_board;
}


void PCB_PARSER::parseHeader() throw( IO_ERROR, PARSE_ERROR )
{
    wxCHECK_RET( CurTok() == T_kicad_pcb,
                 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as a header." ) );

    T token;

    NeedLEFT();
    token = NextTok();

    if( token != T_version )
        Expecting( GetTokenText( T_version ) );

    // Get the file version.
    m_board->SetFileFormatVersionAtLoad( parseInt( GetTokenText( T_version ) ) );

    // Skip the host name and host build version information.
    NeedRIGHT();
    NeedLEFT();
    NeedSYMBOL();
    NeedSYMBOL();
    NeedSYMBOL();
    NeedRIGHT();
}


void PCB_PARSER::parseGeneralSection() throw( IO_ERROR, PARSE_ERROR )
{
     wxCHECK_RET( CurTok() == T_general,
                 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) +
                 wxT( " as a general section." ) );

    T token;

    for( token = NextTok();  token != T_RIGHT;  token = NextTok() )
    {
        if( token != T_LEFT )
            Expecting( T_LEFT );

        token = NextTok();

        switch( token )
        {
        case T_thickness:
            m_board->GetDesignSettings().SetBoardThickness( parseBoardUnits( T_thickness ) );
            NeedRIGHT();
            break;

        case T_no_connects:
            m_board->m_NbNoconnect = parseInt( "no connect count" );
            NeedRIGHT();
            break;

        default:              // Skip everything but the board thickness.
            wxLogDebug( wxT( "Skipping general section token %s " ),
                        GetChars( GetTokenString( token ) ) );

            while( ( token = NextTok() ) != T_RIGHT )
            {
                if( !IsSymbol( token ) && token != T_NUMBER )
                    Expecting( "symbol or number" );
            }
        }
    }
}


void PCB_PARSER::parsePAGE_INFO() throw( IO_ERROR, PARSE_ERROR )
{
    wxCHECK_RET( CurTok() == T_page,
                 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as a PAGE_INFO." ) );

    T token;
    PAGE_INFO pageInfo;

    NeedSYMBOL();

    wxString pageType = FromUTF8();

    if( !pageInfo.SetType( pageType ) )
    {
        wxString err;
        err.Printf( _( "page type \"%s\" is not valid " ), GetChars( FromUTF8() ) );
        THROW_PARSE_ERROR( err, CurSource(), CurLine(), CurLineNumber(), CurOffset() );
    }

    if( pageType == PAGE_INFO::Custom )
    {
        double width = parseDouble( "width" );      // width in mm

        // Perform some controls to avoid crashes if the size is edited by hands
        if( width < 100.0 )
            width = 100.0;
        else if( width > 1200.0 )
            width = 1200.0;

        double height = parseDouble( "height" );    // height in mm

        if( height < 100.0 )
            height = 100.0;
        else if( height > 1200.0 )
            height = 1200.0;

        pageInfo.SetWidthMils( Mm2mils( width ) );
        pageInfo.SetHeightMils( Mm2mils( height ) );
    }

    token = NextTok();

    if( token == T_portrait )
    {
        pageInfo.SetPortrait( true );
        NeedRIGHT();
    }
    else if( token != T_RIGHT )
    {
        Expecting( "portrait|)" );
    }

    m_board->SetPageSettings( pageInfo );
}


void PCB_PARSER::parseTITLE_BLOCK() throw( IO_ERROR, PARSE_ERROR )
{
    wxCHECK_RET( CurTok() == T_title_block,
                 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) +
                 wxT( " as TITLE_BLOCK." ) );

    T token;
    TITLE_BLOCK titleBlock;

    for( token = NextTok();  token != T_RIGHT;  token = NextTok() )
    {
        if( token != T_LEFT )
            Expecting( T_LEFT );

        token = NextTok();

        switch( token )
        {
        case T_title:
            NeedSYMBOL();
            titleBlock.SetTitle( FromUTF8() );
            break;

        case T_date:
            NeedSYMBOL();
            titleBlock.SetDate( FromUTF8() );
            break;

        case T_rev:
            NextTok();
            titleBlock.SetRevision( FromUTF8() );
            break;

        case T_company:
            NextTok();
            titleBlock.SetCompany( FromUTF8() );
            break;

        case T_comment:
            {
                int commentNumber = parseInt( "comment" );

                switch( commentNumber )
                {
                case 1:
                    NextTok();
                    titleBlock.SetComment1( FromUTF8() );
                    break;

                case 2:
                    NextTok();
                    titleBlock.SetComment2( FromUTF8() );
                    break;

                case 3:
                    NextTok();
                    titleBlock.SetComment3( FromUTF8() );
                    break;

                case 4:
                    NextTok();
                    titleBlock.SetComment4( FromUTF8() );
                    break;

                default:
                    wxString err;
                    err.Printf( wxT( "%d is not a valid title block comment number" ), commentNumber );
                    THROW_PARSE_ERROR( err, CurSource(), CurLine(), CurLineNumber(), CurOffset() );
                }

                break;
            }

        default:
            Expecting( "title, date, rev, company, or comment" );
        }

        NeedRIGHT();
    }

    m_board->SetTitleBlock( titleBlock );
}


void PCB_PARSER::parseLayers() throw( IO_ERROR, PARSE_ERROR )
{
    wxCHECK_RET( CurTok() == T_layers,
                 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as layers." ) );

    T           token;
    wxString    name;
    std::string type;
    int         layerIndex;
    bool        isVisible = true;
    int         visibleLayers = 0;
    int         enabledLayers = 0;
    int         copperLayerCount = 0;

    for( token = NextTok();  token != T_RIGHT;  token = NextTok() )
    {
        if( token != T_LEFT )
            Expecting( T_LEFT );

        layerIndex = parseInt( "layer index" );

        NeedSYMBOL();
        name = FromUTF8();

        NeedSYMBOL();
        type = CurText();

        token = NextTok();

        if( token == T_hide )
        {
            isVisible = false;
            NeedRIGHT();
        }
        else if( token == T_RIGHT )
        {
            isVisible = true;
        }
        else
        {
            Expecting( "hide or )" );
        }

        enabledLayers |= 1 << layerIndex;

        if( isVisible )
            visibleLayers |= 1 << layerIndex;

        enum LAYER_T    layerType = LAYER::ParseType( type.c_str() );
        LAYER           layer( name, layerType, isVisible );

        layer.SetFixedListIndex( layerIndex );
        m_board->SetLayer( layerIndex, layer );

        m_layerMap[ name ] = layerIndex;

        wxLogDebug( wxT( "Mapping layer %s to index %d" ),
                    GetChars( name ), layerIndex );

        if( layerType != LT_UNDEFINED )
            copperLayerCount++;
    }

    // We need at least 2 copper layers and there must be an even number of them.
    if( (copperLayerCount < 2) || ((copperLayerCount % 2) != 0) )
    {
        wxString err = wxString::Format(
            _( "%d is not a valid layer count" ), copperLayerCount );

        THROW_PARSE_ERROR( err, CurSource(), CurLine(), CurLineNumber(), CurOffset() );
    }

    m_board->SetCopperLayerCount( copperLayerCount );
    m_board->SetVisibleLayers( visibleLayers );
    m_board->SetEnabledLayers( enabledLayers );
}


int PCB_PARSER::lookUpLayer() throw( PARSE_ERROR, IO_ERROR )
{
    wxString name = FromUTF8();
    const LAYER_HASH_MAP::iterator it = m_layerMap.find( name );

    if( it == m_layerMap.end() )
    {
        wxString error = wxString::Format(
            _( "Layer '%s' in file <%s> at line %d, position %d, was not defined in the layers section" ),
            GetChars( name ), GetChars( CurSource() ), CurLineNumber(), CurOffset() );

        THROW_IO_ERROR( error );
    }

    return it->second;
}


int PCB_PARSER::parseBoardItemLayer() throw( PARSE_ERROR, IO_ERROR )
{
    wxCHECK_MSG( CurTok() == T_layer, UNDEFINED_LAYER,
                 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as layer." ) );

    NextTok();

    int layerIndex = lookUpLayer();

    // Handle closing ) in object parser.

    return layerIndex;
}


int PCB_PARSER::parseBoardItemLayersAsMask() throw( PARSE_ERROR, IO_ERROR )
{
    wxCHECK_MSG( CurTok() == T_layers, 0,
                 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) +
                 wxT( " as item layer mask." ) );

    int layerIndex;
    int layerMask = 0;
    T token;

    for( token = NextTok();  token != T_RIGHT;  token = NextTok() )
    {
        layerIndex = lookUpLayer();
        layerMask |= ( 1 << layerIndex );
    }

    return layerMask;
}


void PCB_PARSER::parseSetup() throw( IO_ERROR, PARSE_ERROR )
{
    wxCHECK_RET( CurTok() == T_setup,
                 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as setup." ) );

    T token;
    NETCLASS* defaultNetclass = m_board->m_NetClasses.GetDefault();
    BOARD_DESIGN_SETTINGS designSettings = m_board->GetDesignSettings();
    ZONE_SETTINGS zoneSettings = m_board->GetZoneSettings();

    for( token = NextTok();  token != T_RIGHT;  token = NextTok() )
    {
        if( token != T_LEFT )
            Expecting( T_LEFT );

        token = NextTok();

        switch( token )
        {
        case T_last_trace_width:    // not used now
            /* lastTraceWidth =*/ parseBoardUnits( T_last_trace_width );
            NeedRIGHT();
            break;

        case T_user_trace_width:
            m_board->m_TrackWidthList.push_back( parseBoardUnits( T_user_trace_width ) );
            NeedRIGHT();
            break;

        case T_trace_clearance:
            defaultNetclass->SetClearance( parseBoardUnits( T_trace_clearance ) );
            NeedRIGHT();
            break;

        case T_zone_clearance:
            zoneSettings.m_ZoneClearance = parseBoardUnits( T_zone_clearance );
            NeedRIGHT();
            break;

        case T_zone_45_only:
            zoneSettings.m_Zone_45_Only = parseBool();
            NeedRIGHT();
            break;

        case T_trace_min:
            designSettings.m_TrackMinWidth = parseBoardUnits( T_trace_min );
            NeedRIGHT();
            break;

        case T_segment_width:
            designSettings.m_DrawSegmentWidth = parseBoardUnits( T_segment_width );
            NeedRIGHT();
            break;

        case T_edge_width:
            designSettings.m_EdgeSegmentWidth = parseBoardUnits( T_edge_width );
            NeedRIGHT();
            break;

        case T_via_size:
            defaultNetclass->SetViaDiameter( parseBoardUnits( T_via_size ) );
            NeedRIGHT();
            break;

        case T_via_drill:
            defaultNetclass->SetViaDrill( parseBoardUnits( T_via_drill ) );
            NeedRIGHT();
            break;

        case T_via_min_size:
            designSettings.m_ViasMinSize = parseBoardUnits( T_via_min_size );
            NeedRIGHT();
            break;

        case T_via_min_drill:
            designSettings.m_ViasMinDrill = parseBoardUnits( T_via_min_drill );
            NeedRIGHT();
            break;

        case T_user_via:
        {
            int viaSize = parseBoardUnits( "user via size" );
            int viaDrill = parseBoardUnits( "user via drill" );
            m_board->m_ViasDimensionsList.push_back( VIA_DIMENSION( viaSize, viaDrill ) );
            NeedRIGHT();
        }
            break;

        case T_uvia_size:
            defaultNetclass->SetuViaDiameter( parseBoardUnits( T_uvia_size ) );
            NeedRIGHT();
            break;

        case T_uvia_drill:
            defaultNetclass->SetuViaDrill( parseBoardUnits( T_uvia_drill ) );
            NeedRIGHT();
            break;

        case T_uvias_allowed:
            designSettings.m_MicroViasAllowed = parseBool();
            NeedRIGHT();
            break;

        case T_uvia_min_size:
            designSettings.m_MicroViasMinSize = parseBoardUnits( T_uvia_min_size );
            NeedRIGHT();
            break;

        case T_uvia_min_drill:
            designSettings.m_MicroViasMinDrill = parseBoardUnits( T_uvia_min_drill );
            NeedRIGHT();
            break;

        case T_pcb_text_width:
            designSettings.m_PcbTextWidth = parseBoardUnits( T_pcb_text_width );
            NeedRIGHT();
            break;

        case T_pcb_text_size:
            designSettings.m_PcbTextSize.x = parseBoardUnits( "pcb text width" );
            designSettings.m_PcbTextSize.y = parseBoardUnits( "pcb text height" );
            NeedRIGHT();
            break;

        case T_mod_edge_width:
            designSettings.m_ModuleSegmentWidth = parseBoardUnits( T_mod_edge_width );
            NeedRIGHT();
            break;

        case T_mod_text_size:
            designSettings.m_ModuleTextSize.x = parseBoardUnits( "module text width" );
            designSettings.m_ModuleTextSize.y = parseBoardUnits( "module text height" );
            NeedRIGHT();
            break;

        case T_mod_text_width:
            designSettings.m_ModuleTextWidth = parseBoardUnits( T_mod_text_width );
            NeedRIGHT();
            break;

        case T_pad_size:
        {
            wxSize sz;
            sz.SetWidth( parseBoardUnits( "master pad width" ) );
            sz.SetHeight( parseBoardUnits( "master pad height" ) );
            designSettings.m_Pad_Master.SetSize( sz );
            NeedRIGHT();
            break;
        }

        case T_pad_drill:
        {
            int drillSize = parseBoardUnits( T_pad_drill );
            designSettings.m_Pad_Master.SetDrillSize( wxSize( drillSize, drillSize ) );
            NeedRIGHT();
        }
            break;

        case T_pad_to_mask_clearance:
             designSettings.m_SolderMaskMargin = parseBoardUnits( T_pad_to_mask_clearance );
            NeedRIGHT();
            break;

        case T_solder_mask_min_width:
            designSettings.m_SolderMaskMinWidth = parseBoardUnits( T_solder_mask_min_width );
            NeedRIGHT();
            break;

        case T_pad_to_paste_clearance:
            designSettings.m_SolderPasteMargin = parseBoardUnits( T_pad_to_paste_clearance );
            NeedRIGHT();
            break;

        case T_pad_to_paste_clearance_ratio:
            designSettings.m_SolderPasteMarginRatio = parseDouble( T_pad_to_paste_clearance_ratio );
            NeedRIGHT();
            break;

        case T_aux_axis_origin:
        {
            int x = parseBoardUnits( "auxiliary origin X" );
            int y = parseBoardUnits( "auxiliary origin Y" );
            // x, y are not evaluated left to right, since they are push on stack right to left
            m_board->SetOriginAxisPosition( wxPoint( x, y ) );
            NeedRIGHT();
            break;
        }

        case T_visible_elements:
            designSettings.SetVisibleElements( parseHex() );
            NeedRIGHT();
            break;

        case T_pcbplotparams:
        {
            PCB_PLOT_PARAMS plotParams;
            PCB_PLOT_PARAMS_PARSER parser( reader );

            plotParams.Parse( &parser );
            m_board->SetPlotOptions( plotParams );

            // I don't know why but this seems to fix a problem in PCB_PLOT_PARAMS::Parse().
            NextTok();
            break;
        }

        default:
            Unexpected( CurText() );
        }
    }

    m_board->SetDesignSettings( designSettings );
    m_board->SetZoneSettings( zoneSettings );

    // Until such time as the *.brd file does not have the
    // global parameters:
    // "last_trace_width", "trace_min_width", "via_size", "via_drill",
    // "via_min_size", and "via_clearance", put those same global
    // values into the default NETCLASS until later board load
    // code should override them.  *.kicad_brd files which have been
    // saved with knowledge of NETCLASSes will override these
    // defaults, old boards will not.
    //
    // @todo: I expect that at some point we can remove said global
    //        parameters from the *.brd file since the ones in the
    //        default netclass serve the same purpose.  If needed
    //        at all, the global defaults should go into a preferences
    //        file instead so they are there to start new board
    //        projects.
    m_board->m_NetClasses.GetDefault()->SetParams();
}


void PCB_PARSER::parseNETINFO_ITEM() throw( IO_ERROR, PARSE_ERROR )
{
    wxCHECK_RET( CurTok() == T_net,
                 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as net." ) );

    int number = parseInt( "net number" );

    NeedSYMBOLorNUMBER();
    wxString name = FromUTF8();

    NeedRIGHT();

    // net 0 should be already in list, so store this net
    // if it is not the net 0, or if the net 0 does not exists.
    // (TODO: a better test.)
    if( number > 0 || m_board->FindNet( 0 ) == NULL )
    {
        NETINFO_ITEM* net = new NETINFO_ITEM( m_board );
        net->SetNet( number );
        net->SetNetname( name );
        m_board->AppendNet( net );
    }
}


void PCB_PARSER::parseNETCLASS() throw( IO_ERROR, PARSE_ERROR )
{
    wxCHECK_RET( CurTok() == T_net_class,
                 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as net class." ) );

    T token;

    auto_ptr<NETCLASS> nc( new NETCLASS( m_board, wxEmptyString ) );

    NeedSYMBOL();
    nc->SetName( FromUTF8() );
    NeedSYMBOL();
    nc->SetDescription( FromUTF8() );

    for( token = NextTok();  token != T_RIGHT;  token = NextTok() )
    {
        if( token != T_LEFT )
            Expecting( T_LEFT );

        token = NextTok();

        switch( token )
        {
        case T_clearance:
            nc->SetClearance( parseBoardUnits( T_clearance ) );
            break;

        case T_trace_width:
            nc->SetTrackWidth( parseBoardUnits( T_trace_width ) );
            break;

        case T_via_dia:
            nc->SetViaDiameter( parseBoardUnits( T_via_dia ) );
            break;

        case T_via_drill:
            nc->SetViaDrill( parseBoardUnits( T_via_drill ) );
            break;

        case T_uvia_dia:
            nc->SetuViaDiameter( parseBoardUnits( T_uvia_dia ) );
            break;

        case T_uvia_drill:
            nc->SetuViaDrill( parseBoardUnits( T_uvia_drill ) );
            break;

        case T_add_net:
            NeedSYMBOLorNUMBER();
            nc->Add( FromUTF8() );
            break;

        default:
            Expecting( "clearance, trace_width, via_dia, via_drill, uvia_dia, uvia_drill, or add_net" );
        }

        NeedRIGHT();
    }

    if( m_board->m_NetClasses.Add( nc.get() ) )
    {
        nc.release();
    }
    else
    {
        // Must have been a name conflict, this is a bad board file.
        // User may have done a hand edit to the file.

        // auto_ptr will delete nc on this code path

        wxString error;
        error.Printf( _( "duplicate NETCLASS name '%s' in file %s at line %d, offset %d" ),
                      nc->GetName().GetData(), CurSource().GetData(), CurLineNumber(), CurOffset() );
        THROW_IO_ERROR( error );
    }
}


DRAWSEGMENT* PCB_PARSER::parseDRAWSEGMENT() throw( IO_ERROR, PARSE_ERROR )
{
    wxCHECK_MSG( CurTok() == T_gr_arc || CurTok() == T_gr_circle || CurTok() == T_gr_curve ||
                 CurTok() == T_gr_line || CurTok() == T_gr_poly, NULL,
                 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as DRAWSEGMENT." ) );

    T token;
    wxPoint pt;
    auto_ptr< DRAWSEGMENT > segment( new DRAWSEGMENT( NULL ) );

    switch( CurTok() )
    {
    case T_gr_arc:
        segment->SetShape( S_ARC );
        NeedLEFT();
        token = NextTok();

        if( token != T_start )
            Expecting( T_start );

        pt.x = parseBoardUnits( "X coordinate" );
        pt.y = parseBoardUnits( "Y coordinate" );
        segment->SetStart( pt );
        NeedRIGHT();
        NeedLEFT();
        token = NextTok();

        if( token != T_end )
            Expecting( T_end );

        pt.x = parseBoardUnits( "X coordinate" );
        pt.y = parseBoardUnits( "Y coordinate" );
        segment->SetEnd( pt );
        NeedRIGHT();
        break;

    case T_gr_circle:
        segment->SetShape( S_CIRCLE );
        NeedLEFT();
        token = NextTok();

        if( token != T_center )
            Expecting( T_center );

        pt.x = parseBoardUnits( "X coordinate" );
        pt.y = parseBoardUnits( "Y coordinate" );
        segment->SetStart( pt );
        NeedRIGHT();
        NeedLEFT();

        token = NextTok();

        if( token != T_end )
            Expecting( T_end );

        pt.x = parseBoardUnits( "X coordinate" );
        pt.y = parseBoardUnits( "Y coordinate" );
        segment->SetEnd( pt );
        NeedRIGHT();
        break;

    case T_gr_curve:
        segment->SetShape( S_CURVE );
        NeedLEFT();
        token = NextTok();

        if( token != T_pts )
            Expecting( T_pts );

        segment->SetStart( parseXY() );
        segment->SetBezControl1( parseXY() );
        segment->SetBezControl2( parseXY() );
        segment->SetEnd( parseXY() );
        NeedRIGHT();
        break;

    case T_gr_line:
        // Default DRAWSEGMENT type is S_SEGMENT.
        NeedLEFT();
        token = NextTok();

        if( token != T_start )
            Expecting( T_start );

        pt.x = parseBoardUnits( "X coordinate" );
        pt.y = parseBoardUnits( "Y coordinate" );
        segment->SetStart( pt );
        NeedRIGHT();
        NeedLEFT();
        token = NextTok();

        if( token != T_end )
            Expecting( T_end );

        pt.x = parseBoardUnits( "X coordinate" );
        pt.y = parseBoardUnits( "Y coordinate" );
        segment->SetEnd( pt );
        NeedRIGHT();
        break;

    case T_gr_poly:
    {
        segment->SetShape( S_POLYGON );
        NeedLEFT();
        token = NextTok();

        if( token != T_pts )
            Expecting( T_pts );

        std::vector< wxPoint > pts;

        while( (token = NextTok()) != T_RIGHT )
            pts.push_back( parseXY() );

        segment->SetPolyPoints( pts );
    }
        break;

    default:
        Expecting( "gr_arc, gr_circle, gr_curve, gr_line, or gr_poly" );
    }

    for( token = NextTok();  token != T_RIGHT;  token = NextTok() )
    {
        if( token != T_LEFT )
            Expecting( T_LEFT );

        token = NextTok();

        switch( token )
        {
        case T_angle:
            segment->SetAngle( parseDouble( "segment angle" ) * 10.0 );
            break;

        case T_layer:
            segment->SetLayer( parseBoardItemLayer() );
            break;

        case T_width:
            segment->SetWidth( parseBoardUnits( T_width ) );
            break;

        case T_tstamp:
            segment->SetTimeStamp( parseHex() );
            break;

        case T_status:
            segment->SetStatus( parseHex() );
            break;

        default:
            Expecting( "layer, width, tstamp, or status" );
        }

        NeedRIGHT();
    }

    return segment.release();
}


TEXTE_PCB* PCB_PARSER::parseTEXTE_PCB() throw( IO_ERROR, PARSE_ERROR )
{
    wxCHECK_MSG( CurTok() == T_gr_text, NULL,
                 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as TEXTE_PCB." ) );

    T token;

    auto_ptr< TEXTE_PCB > text( new TEXTE_PCB( m_board ) );
    NeedSYMBOLorNUMBER();

    text->SetText( FromUTF8() );
    NeedLEFT();
    token = NextTok();

    if( token != T_at )
        Expecting( T_at );

    wxPoint pt;

    pt.x = parseBoardUnits( "X coordinate" );
    pt.y = parseBoardUnits( "Y coordinate" );
    text->SetPosition( pt );

    // If there is no orientation defined, then it is the default value of 0 degrees.
    token = NextTok();

    if( token == T_NUMBER )
    {
        text->SetOrientation( parseDouble() * 10.0 );
        NeedRIGHT();
    }
    else if( token != T_RIGHT )
    {
        Unexpected( CurText() );
    }

    for( token = NextTok();  token != T_RIGHT;  token = NextTok() )
    {
        if( token != T_LEFT )
            Expecting( T_LEFT );

        token = NextTok();

        switch( token )
        {
        case T_layer:
            text->SetLayer( parseBoardItemLayer() );
            NeedRIGHT();
            break;

        case T_tstamp:
            text->SetTimeStamp( parseHex() );
            NeedRIGHT();
            break;

        case T_effects:
            parseEDA_TEXT( (EDA_TEXT*) text.get() );
            break;

        default:
            Expecting( "layer, tstamp or effects" );
        }
    }

    return text.release();
}


DIMENSION* PCB_PARSER::parseDIMENSION() throw( IO_ERROR, PARSE_ERROR )
{
    wxCHECK_MSG( CurTok() == T_dimension, NULL,
                 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as DIMENSION." ) );

    T token;

    auto_ptr< DIMENSION > dimension( new DIMENSION( NULL ) );

    dimension->m_Value = parseBoardUnits( "dimension value" );
    NeedLEFT();
    token = NextTok();

    if( token != T_width )
        Expecting( T_width );

    dimension->SetWidth( parseBoardUnits( "dimension width value" ) );
    NeedRIGHT();

    for( token = NextTok();  token != T_RIGHT;  token = NextTok() )
    {
        if( token != T_LEFT )
            Expecting( T_LEFT );

        token = NextTok();

        switch( token )
        {
        case T_layer:
            dimension->SetLayer( parseBoardItemLayer() );
            NeedRIGHT();
            break;

        case T_tstamp:
            dimension->SetTimeStamp( parseHex() );
            NeedRIGHT();
            break;

        case T_gr_text:
        {
            TEXTE_PCB* text = parseTEXTE_PCB();
            dimension->m_Text = *text;
            delete text;
            break;
        }

        case T_feature1:
            NeedLEFT();
            token = NextTok();

            if( token != T_pts )
                Expecting( T_pts );

            parseXY( &dimension->m_featureLineDOx, &dimension->m_featureLineDOy );
            parseXY( &dimension->m_featureLineDFx, &dimension->m_featureLineDFy );
            NeedRIGHT();
            NeedRIGHT();
            break;

        case T_feature2:
            NeedLEFT();
            token = NextTok();

            if( token != T_pts )
                Expecting( T_pts );

            parseXY( &dimension->m_featureLineGOx, &dimension->m_featureLineGOy );
            parseXY( &dimension->m_featureLineGFx, &dimension->m_featureLineGFy );
            NeedRIGHT();
            NeedRIGHT();
            break;


        case T_crossbar:
            NeedLEFT();
            token = NextTok();

            if( token != T_pts )
                Expecting( T_pts );

            parseXY( &dimension->m_crossBarOx, &dimension->m_crossBarOy );
            parseXY( &dimension->m_crossBarFx, &dimension->m_crossBarFy );
            NeedRIGHT();
            NeedRIGHT();
            break;

        case T_arrow1a:
            NeedLEFT();
            token = NextTok();

            if( token != T_pts )
                Expecting( T_pts );

            parseXY( &dimension->m_arrowD1Ox, &dimension->m_arrowD1Oy );
            parseXY( &dimension->m_arrowD1Fx, &dimension->m_arrowD1Fy );
            NeedRIGHT();
            NeedRIGHT();
            break;

        case T_arrow1b:
            NeedLEFT();
            token = NextTok();

            if( token != T_pts )
                Expecting( T_pts );

            parseXY( &dimension->m_arrowD2Ox, &dimension->m_arrowD2Oy );
            parseXY( &dimension->m_arrowD2Fx, &dimension->m_arrowD2Fy );
            NeedRIGHT();
            NeedRIGHT();
            break;

        case T_arrow2a:
            NeedLEFT();
            token = NextTok();

            if( token != T_pts )
                Expecting( T_pts );

            parseXY( &dimension->m_arrowG1Ox, &dimension->m_arrowG1Oy );
            parseXY( &dimension->m_arrowG1Fx, &dimension->m_arrowG1Fy );
            NeedRIGHT();
            NeedRIGHT();
            break;

        case T_arrow2b:
            NeedLEFT();
            token = NextTok();

            if( token != T_pts )
                Expecting( T_pts );

            parseXY( &dimension->m_arrowG2Ox, &dimension->m_arrowG2Oy );
            parseXY( &dimension->m_arrowG2Fx, &dimension->m_arrowG2Fy );
            NeedRIGHT();
            NeedRIGHT();
            break;

        default:
            Expecting( "layer, tstamp, gr_text, feature1, feature2 crossbar, arrow1a, "
                       "arrow1b, arrow2a, or arrow2b" );
        }
    }

    return dimension.release();
}


MODULE* PCB_PARSER::parseMODULE() throw( IO_ERROR, PARSE_ERROR )
{
    wxCHECK_MSG( CurTok() == T_module, NULL,
                 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as MODULE." ) );

    wxPoint pt;
    T token;

    auto_ptr< MODULE > module( new MODULE( m_board ) );

    NeedSYMBOL();
    module->SetLibRef( FromUTF8() );

    for( token = NextTok();  token != T_RIGHT;  token = NextTok() )
    {
        if( token == T_LEFT )
            token = NextTok();

        switch( token )
        {
        case T_locked:
            module->SetLocked( true );
            break;

        case T_placed:
            module->SetIsPlaced( true );
            break;

        case T_layer:
            module->SetLayer( parseBoardItemLayer() );
            NeedRIGHT();
            break;

        case T_tedit:
            module->SetLastEditTime( parseHex() );
            NeedRIGHT();
            break;

        case T_tstamp:
            module->SetTimeStamp( parseHex() );
            NeedRIGHT();
            break;

        case T_at:
            pt.x = parseBoardUnits( "X coordinate" );
            pt.y = parseBoardUnits( "Y coordinate" );
            module->SetPosition( pt );
            token = NextTok();

            if( token == T_NUMBER )
            {
                module->SetOrientation( parseDouble() * 10.0 );
                NeedRIGHT();
            }
            else if( token != T_RIGHT )
            {
                Expecting( T_RIGHT );
            }

            break;

        case T_descr:
            NeedSYMBOLorNUMBER();   // some symbols can be 0508, so a number is also a symbol here
            module->SetDescription( FromUTF8() );
            NeedRIGHT();
            break;

        case T_tags:
            NeedSYMBOLorNUMBER();   // some symbols can be 0508, so a number is also a symbol here
            module->SetKeywords( FromUTF8() );
            NeedRIGHT();
            break;

        case T_path:
            NeedSYMBOL();
            module->SetPath( FromUTF8() );
            NeedRIGHT();
            break;

        case T_autoplace_cost90:
            module->m_CntRot90 = parseInt( "auto place cost at 90 degrees" );
            NeedRIGHT();
            break;

        case T_autoplace_cost180:
            module->m_CntRot180 = parseInt( "auto place cost at 180 degrees" );
            NeedRIGHT();
            break;

        case T_solder_mask_margin:
            module->SetLocalSolderMaskMargin( parseBoardUnits( "local solder mask margin value" ) );
            NeedRIGHT();
            break;

        case T_solder_paste_margin:
            module->SetLocalSolderPasteMargin(
                parseBoardUnits( "local solder paste margin value" ) );
            NeedRIGHT();
            break;

        case T_solder_paste_ratio:
            module->SetLocalSolderPasteMarginRatio(
                parseDouble( "local solder paste margin ratio value" ) );
            NeedRIGHT();
            break;

        case T_clearance:
            module->SetLocalClearance( parseBoardUnits( "local clearance value" ) );
            NeedRIGHT();
            break;

        case T_zone_connect:
            module->SetZoneConnection( (ZoneConnection) parseInt( "zone connection value" ) );
            NeedRIGHT();
            break;

        case T_thermal_width:
            module->SetThermalWidth( parseBoardUnits( "thermal width value" ) );
            NeedRIGHT();
            break;

        case T_thermal_gap:
            module->SetThermalGap( parseBoardUnits( "thermal gap value" ) );
            NeedRIGHT();
            break;

        case T_attr:
            for( token = NextTok();  token != T_RIGHT;  token = NextTok() )
            {
                switch( token )
                {
                case T_smd:
                    module->SetAttributes( module->GetAttributes() | MOD_CMS );
                    break;

                case T_virtual:
                    module->SetAttributes( module->GetAttributes() | MOD_VIRTUAL );
                    break;

                default:
                    Expecting( "smd and/or virtual" );
                }
            }

            break;

        case T_fp_text:
        {
            TEXTE_MODULE* text = parseTEXTE_MODULE();
            text->SetParent( module.get() );
            double orientation = text->GetOrientation();
            orientation -= module->GetOrientation();
            text->SetOrientation( orientation );
            text->SetDrawCoord();

            if( text->GetType() == TEXT_is_REFERENCE )
            {
                module->Reference() = *text;
                delete text;
            }
            else if( text->GetType() == TEXT_is_VALUE )
            {
                module->Value() = *text;
                delete text;
            }
            else
            {
                module->m_Drawings.PushBack( text );
            }

            break;
        }

        case T_fp_arc:
        case T_fp_circle:
        case T_fp_curve:
        case T_fp_line:
        case T_fp_poly:
        {
            EDGE_MODULE* em = parseEDGE_MODULE();
            em->SetParent( module.get() );
            em->SetDrawCoord();
            module->m_Drawings.PushBack( em );
            break;
        }

        case T_pad:
        {
            D_PAD* pad = parseD_PAD();
            wxPoint pt = pad->GetPos0();
            RotatePoint( &pt, module->GetOrientation() );
            pad->SetPosition( pt + module->GetPosition() );
            module->AddPad( pad );
            break;
        }

        case T_model:
            module->Add3DModel( parse3DModel() );
            break;

        default:
            Expecting( "locked, placed, tedit, tstamp, at, descr, tags, path, "
                       "autoplace_cost90, autoplace_cost180, solder_mask_margin, "
                       "solder_paste_margin, solder_paste_ratio, clearance, "
                       "zone_connect, thermal_width, thermal_gap, attr, fp_text, "
                       "fp_arc, fp_circle, fp_curve, fp_line, fp_poly, pad, or model" );
        }
    }

    module->CalculateBoundingBox();

    return module.release();
}


TEXTE_MODULE* PCB_PARSER::parseTEXTE_MODULE() throw( IO_ERROR, PARSE_ERROR )
{
    wxCHECK_MSG( CurTok() == T_fp_text, NULL,
                 wxString::Format( wxT( "Cannot parse %s as TEXTE_MODULE at line %d, offset %d." ),
                                   GetChars( GetTokenString( CurTok() ) ),
                                   CurLineNumber(), CurOffset() ) );

    T token = NextTok();

    auto_ptr< TEXTE_MODULE > text( new TEXTE_MODULE( NULL ) );

    switch( token )
    {
    case T_reference:
        text->SetType( TEXT_is_REFERENCE );
        break;

    case T_value:
        text->SetType( TEXT_is_VALUE );
        break;

    case T_user:
        break;          // Default type is user text.

    default:
        THROW_IO_ERROR( wxString::Format( _( "cannot handle module text type %s" ),
                                          GetChars( FromUTF8() ) ) );
    }

    NeedSYMBOLorNUMBER();

    text->SetText( FromUTF8() );
    NeedLEFT();
    token = NextTok();

    if( token != T_at )
        Expecting( T_at );

    wxPoint pt;

    pt.x = parseBoardUnits( "X coordinate" );
    pt.y = parseBoardUnits( "Y coordinate" );
    text->SetPos0( pt );
    token = NextTok();

    // If there is no orientation defined, then it is the default value of 0 degrees.
    if( token == T_NUMBER )
    {
        text->SetOrientation( parseDouble() * 10.0 );
        NeedRIGHT();
    }
    else if( token != T_RIGHT )
    {
        Unexpected( CurText() );
    }

    for( token = NextTok();  token != T_RIGHT;  token = NextTok() )
    {
        if( token == T_LEFT )
            token = NextTok();

        switch( token )
        {
        case T_layer:
            text->SetLayer( parseBoardItemLayer() );
            NeedRIGHT();
            break;

        case T_hide:
            text->SetVisible( false );
            break;

        case T_effects:
            parseEDA_TEXT( (EDA_TEXT*) text.get() );
            break;

        default:
            Expecting( "hide or effects" );
        }
    }

    return text.release();
}


EDGE_MODULE* PCB_PARSER::parseEDGE_MODULE() throw( IO_ERROR, PARSE_ERROR )
{
    wxCHECK_MSG( CurTok() == T_fp_arc || CurTok() == T_fp_circle || CurTok() == T_fp_curve ||
                 CurTok() == T_fp_line || CurTok() == T_fp_poly, NULL,
                 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as EDGE_MODULE." ) );

    wxPoint pt;
    T token;

    auto_ptr< EDGE_MODULE > segment( new EDGE_MODULE( NULL ) );

    switch( CurTok() )
    {
    case T_fp_arc:
        segment->SetShape( S_ARC );
        NeedLEFT();
        token = NextTok();

        if( token != T_start )
            Expecting( T_start );

        pt.x = parseBoardUnits( "X coordinate" );
        pt.y = parseBoardUnits( "Y coordinate" );
        segment->SetStart0( pt );
        NeedRIGHT();
        NeedLEFT();
        token = NextTok();

        if( token != T_end )
            Expecting( T_end );

        pt.x = parseBoardUnits( "X coordinate" );
        pt.y = parseBoardUnits( "Y coordinate" );
        segment->SetEnd0( pt );
        NeedRIGHT();
        NeedLEFT();
        token = NextTok();

        if( token != T_angle )
            Expecting( T_angle );

        segment->SetAngle( parseDouble( "segment angle" ) );
        NeedRIGHT();
        break;

    case T_fp_circle:
        segment->SetShape( S_CIRCLE );
        NeedLEFT();
        token = NextTok();

        if( token != T_center )
            Expecting( T_center );

        pt.x = parseBoardUnits( "X coordinate" );
        pt.y = parseBoardUnits( "Y coordinate" );
        segment->SetStart0( pt );
        NeedRIGHT();
        NeedLEFT();
        token = NextTok();

        if( token != T_end )
            Expecting( T_end );

        pt.x = parseBoardUnits( "X coordinate" );
        pt.y = parseBoardUnits( "Y coordinate" );
        segment->SetEnd0( pt );
        NeedRIGHT();
        break;

    case T_fp_curve:
        segment->SetShape( S_CURVE );
        NeedLEFT();
        token = NextTok();

        if( token != T_pts )
            Expecting( T_pts );

        segment->SetStart0( parseXY() );
        segment->SetBezControl1( parseXY() );
        segment->SetBezControl2( parseXY() );
        segment->SetEnd0( parseXY() );
        NeedRIGHT();
        break;

    case T_fp_line:
        // Default DRAWSEGMENT type is S_SEGMENT.
        NeedLEFT();
        token = NextTok();

        if( token != T_start )
            Expecting( T_start );

        pt.x = parseBoardUnits( "X coordinate" );
        pt.y = parseBoardUnits( "Y coordinate" );
        segment->SetStart0( pt );

        NeedRIGHT();
        NeedLEFT();
        token = NextTok();

        if( token != T_end )
            Expecting( T_end );

        pt.x = parseBoardUnits( "X coordinate" );
        pt.y = parseBoardUnits( "Y coordinate" );
        segment->SetEnd0( pt );
        NeedRIGHT();
        break;

    case T_fp_poly:
    {
        segment->SetShape( S_POLYGON );
        NeedLEFT();
        token = NextTok();

        if( token != T_pts )
            Expecting( T_pts );

        std::vector< wxPoint > pts;

        while( (token = NextTok()) != T_RIGHT )
            pts.push_back( parseXY() );

        segment->SetPolyPoints( pts );
    }
        break;

    default:
        Expecting( "fp_arc, fp_circle, fp_curve, fp_line, or fp_poly" );
    }

    for( token = NextTok();  token != T_RIGHT;  token = NextTok() )
    {
        if( token != T_LEFT )
            Expecting( T_LEFT );

        token = NextTok();

        switch( token )
        {
        case T_layer:
            segment->SetLayer( parseBoardItemLayer() );
            break;

        case T_width:
            segment->SetWidth( parseBoardUnits( T_width ) );
            break;

        case T_tstamp:
            segment->SetTimeStamp( parseHex() );
            break;

        case T_status:
            segment->SetStatus( parseHex() );
            break;

        default:
            Expecting( "layer, width, tstamp, or status" );
        }

        NeedRIGHT();
    }

    return segment.release();
}


D_PAD* PCB_PARSER::parseD_PAD() throw( IO_ERROR, PARSE_ERROR )
{
    wxCHECK_MSG( CurTok() == T_pad, NULL,
                 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as D_PAD." ) );

    wxSize sz;
    wxPoint pt;
    auto_ptr< D_PAD > pad( new D_PAD( NULL ) );

    NeedSYMBOLorNUMBER();
    pad->SetPadName( FromUTF8() );

    T token = NextTok();

    switch( token )
    {
    case T_thru_hole:
        pad->SetAttribute( PAD_STANDARD );
        break;

    case T_smd:
        pad->SetAttribute( PAD_SMD );
        break;

    case T_connect:
        pad->SetAttribute( PAD_CONN );
        break;

    case T_np_thru_hole:
        pad->SetAttribute( PAD_HOLE_NOT_PLATED );
        break;

    default:
        Expecting( "thru_hole, smd, connect, or np_thru_hole" );
    }

    token = NextTok();

    switch( token )
    {
    case T_circle:
        pad->SetShape( PAD_CIRCLE );
        break;

    case T_rect:
        pad->SetShape( PAD_RECT );
        break;

    case T_oval:
        pad->SetShape( PAD_OVAL );
        break;

    case T_trapezoid:
        pad->SetShape( PAD_TRAPEZOID );
        break;

    default:
        Expecting( "circle, rectangle, oval, or trapezoid" );
    }

    for( token = NextTok();  token != T_RIGHT;  token = NextTok() )
    {
        if( token != T_LEFT )
            Expecting( T_LEFT );

        token = NextTok();

        switch( token )
        {
        case T_size:
            sz.SetWidth( parseBoardUnits( "width value" ) );
            sz.SetHeight( parseBoardUnits( "height value" ) );
            pad->SetSize( sz );
            NeedRIGHT();
            break;

        case T_at:
            pt.x = parseBoardUnits( "X coordinate" );
            pt.y = parseBoardUnits( "Y coordinate" );
            pad->SetPos0( pt );
            token = NextTok();

            if( token == T_NUMBER )
            {
                pad->SetOrientation( parseDouble() * 10.0 );
                NeedRIGHT();
            }
            else if( token != T_RIGHT )
            {
                Expecting( ") or angle value" );
            }

            break;

        case T_rect_delta:
        {
            wxSize delta;
            delta.SetWidth( parseBoardUnits( "rectangle delta width" ) );
            delta.SetHeight( parseBoardUnits( "rectangle delta height" ) );
            pad->SetDelta( delta );
            NeedRIGHT();
            break;
        }

        case T_drill:
        {
            bool haveWidth = false;
            wxSize drillSize = pad->GetDrillSize();

            for( token = NextTok();  token != T_RIGHT;  token = NextTok() )
            {
                if( token == T_LEFT )
                    token = NextTok();

                switch( token )
                {
                case T_oval:
                    pad->SetDrillShape( PAD_OVAL );
                    break;

                case T_NUMBER:
                {
                    if( !haveWidth )
                    {
                        drillSize.SetWidth( parseBoardUnits() );

                        // If height is not defined the width and height are the same.
                        drillSize.SetHeight( drillSize.GetWidth() );
                        haveWidth = true;
                    }
                    else
                    {
                        drillSize.SetHeight( parseBoardUnits() );
                    }

                    break;
                }

                case T_offset:
                    pad->SetOffset( wxPoint( parseBoardUnits( "drill offset x" ),
                                             parseBoardUnits( "drill offset y" ) ) );
                    NeedRIGHT();
                    break;

                default:
                    Expecting( "oval, size, or offset" );
                }
            }

            pad->SetDrillSize( drillSize );
            break;
        }

        case T_layers:
        {
            int layerMask = parseBoardItemLayersAsMask();

            // Only the layers that are used are saved so we need to enable all the copper
            // layers to prevent any problems with the current design.  At some point in
            // the future, the layer handling should be improved.
            if( pad->GetAttribute() == PAD_STANDARD )
                layerMask |= ALL_CU_LAYERS;

            pad->SetLayerMask( layerMask );
            break;
        }

        case T_net:
            pad->SetNet( parseInt( "net number" ) );
            NeedSYMBOLorNUMBER();
            pad->SetNetname( FromUTF8() );
            NeedRIGHT();
            break;

        case T_die_length:
            pad->SetDieLength( parseBoardUnits( T_die_length ) );
            NeedRIGHT();
            break;

        case T_solder_mask_margin:
            pad->SetLocalSolderMaskMargin( parseBoardUnits( T_solder_mask_margin ) );
            NeedRIGHT();
            break;

        case T_solder_paste_margin:
            pad->SetLocalSolderPasteMargin( parseBoardUnits( T_solder_paste_margin ) );
            NeedRIGHT();
            break;

        case T_solder_paste_margin_ratio:
            pad->SetLocalSolderPasteMarginRatio( parseBoardUnits( T_solder_paste_margin_ratio ) );
            NeedRIGHT();
            break;

        case T_clearance:
            pad->SetLocalClearance( parseBoardUnits( "local clearance value" ) );
            NeedRIGHT();
            break;

        case T_zone_connect:
            pad->SetZoneConnection( (ZoneConnection) parseInt( "zone connection value" ) );
            NeedRIGHT();
            break;

        case T_thermal_width:
            pad->SetThermalWidth( parseBoardUnits( T_thermal_width ) );
            NeedRIGHT();
            break;

        case T_thermal_gap:
            pad->SetThermalGap( parseBoardUnits( T_thermal_gap ) );
            NeedRIGHT();
            break;

        default:
            Expecting( "at, drill, layers, net, die_length, solder_mask_margin, "
                       "solder_paste_margin, solder_paste_margin_ratio, clearance, "
                       "zone_connect, thermal_width, or thermal_gap" );
        }
    }

    return pad.release();
}


TRACK* PCB_PARSER::parseTRACK() throw( IO_ERROR, PARSE_ERROR )
{
    wxCHECK_MSG( CurTok() == T_segment, NULL,
                 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as TRACK." ) );

    wxPoint pt;
    T token;

    auto_ptr< TRACK > track( new TRACK( m_board ) );

    for( token = NextTok();  token != T_RIGHT;  token = NextTok() )
    {
        if( token != T_LEFT )
            Expecting( T_LEFT );

        token = NextTok();

        switch( token )
        {
        case T_start:
            pt.x = parseBoardUnits( "start x" );
            pt.y = parseBoardUnits( "start y" );
            track->SetStart( pt );
            break;

        case T_end:
            pt.x = parseBoardUnits( "end x" );
            pt.y = parseBoardUnits( "end y" );
            track->SetEnd( pt );
            break;

        case T_width:
            track->SetWidth( parseBoardUnits( "width" ) );
            break;

        case T_layer:
            track->SetLayer( parseBoardItemLayer() );
            break;

        case T_net:
            track->SetNet( parseInt( "net number" ) );
            break;

        case T_tstamp:
            track->SetTimeStamp( parseHex() );
            break;

        case T_status:
            track->SetStatus( parseHex() );
            break;

        default:
            Expecting( "start, end, width, layer, net, tstamp, or status" );
        }

        NeedRIGHT();
    }

    return track.release();
}


SEGVIA* PCB_PARSER::parseSEGVIA() throw( IO_ERROR, PARSE_ERROR )
{
    wxCHECK_MSG( CurTok() == T_via, NULL,
                 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as SEGVIA." ) );

    wxPoint pt;
    T token;

    auto_ptr< SEGVIA > via( new SEGVIA( m_board ) );

    for( token = NextTok();  token != T_RIGHT;  token = NextTok() )
    {
        if( token == T_LEFT )
            token = NextTok();

        switch( token )
        {
        case T_blind:
            via->SetShape( VIA_BLIND_BURIED );
            break;

        case T_micro:
            via->SetShape( VIA_MICROVIA );
            break;

        case T_at:
            pt.x = parseBoardUnits( "start x" );
            pt.y = parseBoardUnits( "start y" );
            via->SetStart( pt );
            via->SetEnd( pt );
            NeedRIGHT();
            break;

        case T_size:
            via->SetWidth( parseBoardUnits( "via width" ) );
            NeedRIGHT();
            break;

        case T_drill:
            via->SetDrill( parseBoardUnits( "drill diameter" ) );
            NeedRIGHT();
            break;

        case T_layers:
        {
            int layer1, layer2;
            NextTok();
            layer1 = lookUpLayer();
            NextTok();
            layer2 = lookUpLayer();
            via->SetLayerPair( layer1, layer2 );
            NeedRIGHT();
        }
            break;

        case T_net:
            via->SetNet( parseInt( "net number" ) );
            NeedRIGHT();
            break;

        case T_tstamp:
            via->SetTimeStamp( parseHex() );
            NeedRIGHT();
            break;

        case T_status:
            via->SetStatus( parseHex() );
            NeedRIGHT();
            break;

        default:
            Expecting( "blind, micro, at, size, drill, layers, net, tstamp, or status" );
        }
    }

    return via.release();
}


ZONE_CONTAINER* PCB_PARSER::parseZONE_CONTAINER() throw( IO_ERROR, PARSE_ERROR )
{
    wxCHECK_MSG( CurTok() == T_zone, NULL,
                 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) +
                 wxT( " as ZONE_CONTAINER." ) );

    CPolyLine::HATCH_STYLE hatchStyle = CPolyLine::NO_HATCH;
    int     hatchPitch = Mils2iu( CPolyLine::GetDefaultHatchPitchMils() );
    wxPoint pt;
    T       token;

    // bigger scope since each filled_polygon is concatenated in here
    std::vector< CPolyPt > pts;

    auto_ptr< ZONE_CONTAINER > zone( new ZONE_CONTAINER( m_board ) );

    zone->SetPriority( 0 );

    for( token = NextTok();  token != T_RIGHT;  token = NextTok() )
    {
        if( token == T_LEFT )
            token = NextTok();

        switch( token )
        {
        case T_net:
            // Init the net code only, not the netname, to be sure
            // the zone net name is the name read in file.
            // (When mismatch, the user will be prompted in DRC, to fix the actual name)
            zone->BOARD_CONNECTED_ITEM::SetNet( parseInt( "net number" ) );
            NeedRIGHT();
            break;

        case T_net_name:
            NeedSYMBOL();
            zone->SetNetName( FromUTF8() );
            NeedRIGHT();
            break;

        case T_layer:
            zone->SetLayer( parseBoardItemLayer() );
            NeedRIGHT();
            break;

        case T_tstamp:
            zone->SetTimeStamp( parseHex() );
            NeedRIGHT();
            break;

        case T_hatch:
            token = NextTok();

            if( token != T_none && token != T_edge && token != T_full )
                Expecting( "none, edge, or full" );

            switch( token )
            {
            default:
            case T_none:   hatchStyle = CPolyLine::NO_HATCH;        break;
            case T_edge:   hatchStyle = CPolyLine::DIAGONAL_EDGE;   break;
            case T_full:   hatchStyle = CPolyLine::DIAGONAL_FULL;
            }

            hatchPitch = parseBoardUnits( "hatch pitch" );
            NeedRIGHT();
            break;

        case T_priority:
            zone->SetPriority( parseInt( "zone priority" ) );
            NeedRIGHT();
            break;

        case T_connect_pads:
            for( token = NextTok();  token != T_RIGHT;  token = NextTok() )
            {
                if( token == T_LEFT )
                    token = NextTok();

                switch( token )
                {
                case T_yes:
                    zone->SetPadConnection( PAD_IN_ZONE );
                    break;

                case T_no:
                    zone->SetPadConnection( PAD_NOT_IN_ZONE );
                    break;

                case T_thru_hole_only:
                    zone->SetPadConnection( THT_THERMAL );
                    break;

                case T_clearance:
                    zone->SetZoneClearance( parseBoardUnits( "zone clearance" ) );
                    NeedRIGHT();
                    break;

                default:
                    Expecting( "yes, no, or clearance" );
                }
            }

            break;

        case T_min_thickness:
            zone->SetMinThickness( parseBoardUnits( T_min_thickness ) );
            NeedRIGHT();
            break;

        case T_fill:
            for( token = NextTok();  token != T_RIGHT;  token = NextTok() )
            {
                if( token == T_LEFT )
                    token = NextTok();

                switch( token )
                {
                case T_yes:
                    zone->SetIsFilled( true );
                    break;

                case T_mode:
                    token = NextTok();

                    if( token != T_segment && token != T_polygon )
                        Expecting( "segment or polygon" );

                    // @todo Create an enum for fill modes.
                    zone->SetFillMode( token == T_polygon ? 0 : 1 );
                    break;

                case T_arc_segments:
                    zone->SetArcSegCount( parseInt( "arc segment count" ) );
                    break;

                case T_thermal_gap:
                    zone->SetThermalReliefGap( parseBoardUnits( T_thermal_gap ) );
                    break;

                case T_thermal_bridge_width:
                    zone->SetThermalReliefCopperBridge( parseBoardUnits( T_thermal_bridge_width ) );
                    break;

                case T_smoothing:
                    switch( NextTok() )
                    {
                    case T_none:
                        zone->SetCornerSmoothingType( ZONE_SETTINGS::SMOOTHING_NONE );
                        break;

                    case T_chamfer:
                        zone->SetCornerSmoothingType( ZONE_SETTINGS::SMOOTHING_CHAMFER );
                        break;

                    case T_fillet:
                        zone->SetCornerSmoothingType( ZONE_SETTINGS::SMOOTHING_FILLET );
                        break;

                    default:
                        Expecting( "none, chamfer, or fillet" );
                    }

                    break;

                case T_radius:
                    zone->SetCornerRadius( parseBoardUnits( "corner radius" ) );
                    break;

                default:
                    Expecting( "mode, arc_segments, thermal_gap, thermal_bridge_width, "
                               "smoothing, or radius" );
                }

                NeedRIGHT();
            }

            break;

        case T_keepout:
            zone->SetIsKeepout( true );

            for( token = NextTok();  token != T_RIGHT;  token = NextTok() )
            {
                if( token == T_LEFT )
                    token = NextTok();

                switch( token )
                {
                case T_tracks:
                    token = NextTok();

                    if( token != T_allowed && token != T_not_allowed )
                        Expecting( "allowed or not_allowed" );
                    zone->SetDoNotAllowTracks( token == T_not_allowed );
                    break;

                case T_vias:
                    token = NextTok();

                    if( token != T_allowed && token != T_not_allowed )
                        Expecting( "allowed or not_allowed" );
                    zone->SetDoNotAllowVias( token == T_not_allowed );
                    break;

                case T_copperpour:
                    token = NextTok();

                    if( token != T_allowed && token != T_not_allowed )
                        Expecting( "allowed or not_allowed" );
                    zone->SetDoNotAllowCopperPour( token == T_not_allowed );
                    break;

                default:
                    Expecting( "tracks, vias or copperpour" );
                }

                NeedRIGHT();
            }

            break;

        case T_polygon:
        {
            std::vector< wxPoint > corners;

            NeedLEFT();
            token = NextTok();

            if( token != T_pts )
                Expecting( T_pts );

            for( token = NextTok();  token != T_RIGHT;  token = NextTok() )
            {
                corners.push_back( parseXY() );
            }

            NeedRIGHT();
            zone->AddPolygon( corners );
        }

            break;

        case T_filled_polygon:
        {
            // "(filled_polygon (pts"
            NeedLEFT();
            token = NextTok();

            if( token != T_pts )
                Expecting( T_pts );

            for( token = NextTok();  token != T_RIGHT;  token = NextTok() )
            {
                pts.push_back( CPolyPt( parseXY() ) );
            }

            NeedRIGHT();
            pts.back().end_contour = true;
        }

            break;

        case T_fill_segments:
        {
            std::vector< SEGMENT > segs;

            for( token = NextTok();  token != T_RIGHT;  token = NextTok() )
            {
                if( token != T_LEFT )
                    Expecting( T_LEFT );

                token = NextTok();

                if( token != T_pts )
                    Expecting( T_pts );

                SEGMENT segment( parseXY(), parseXY() );
                NeedRIGHT();
                segs.push_back( segment );
            }

            zone->AddFillSegments( segs );
        }

            break;

        default:
            Expecting( "net, layer, tstamp, hatch, priority, connect_pads, min_thickness, "
                       "fill, polygon, filled_polygon, or fill_segments" );
        }
    }

    if( zone->GetNumCorners() > 2 )
    {
        if( !zone->IsOnCopperLayer() )
        {
            zone->SetFillMode( 0 );
            zone->SetNet( 0 );
        }

        // Set hatch here, after outlines corners are read
        zone->m_Poly->SetHatch( hatchStyle, hatchPitch, true );
    }

    if( pts.size() )
        zone->AddFilledPolysList( pts );

    return zone.release();
}


PCB_TARGET* PCB_PARSER::parsePCB_TARGET() throw( IO_ERROR, PARSE_ERROR )
{
    wxCHECK_MSG( CurTok() == T_target, NULL,
                 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as PCB_TARGET." ) );

    wxPoint pt;
    T token;

    auto_ptr< PCB_TARGET > target( new PCB_TARGET( NULL ) );


    for( token = NextTok();  token != T_RIGHT;  token = NextTok() )
    {
        if( token == T_LEFT )
            token = NextTok();

        switch( token )
        {
        case T_x:
            target->SetShape( 1 );
            break;

        case T_plus:
            target->SetShape( 0 );
            break;

        case T_at:
            pt.x = parseBoardUnits( "target x position" );
            pt.y = parseBoardUnits( "target y position" );
            target->SetPosition( pt );
            NeedRIGHT();
            break;

        case T_size:
            target->SetSize( parseBoardUnits( "target size" ) );
            NeedRIGHT();
            break;

        case T_width:
            target->SetWidth( parseBoardUnits( "target thickness" ) );
            NeedRIGHT();
            break;

        case T_layer:
            target->SetLayer( parseBoardItemLayer() );
            NeedRIGHT();
            break;

        case T_tstamp:
            target->SetTimeStamp( parseHex() );
            NeedRIGHT();
            break;

        default:
            Expecting( "x, plus, at, size, width, layer or tstamp" );
        }
    }

    return target.release();
}