pcb_io_kicad_sexpr_parser.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2012 CERN
 * Copyright (C) 2012-2024 KiCad Developers, see AUTHORS.txt for contributors.
 *
 * 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
 */
 
#include <cerrno>
#include <charconv>
#include <confirm.h>
#include <macros.h>
#include <fmt/format.h>
#include <title_block.h>
#include <trigo.h>
 
#include <board.h>
#include <board_design_settings.h>
#include <pcb_dimension.h>
#include <pcb_shape.h>
#include <pcb_reference_image.h>
#include <pcb_group.h>
#include <pcb_generator.h>
#include <pcb_target.h>
#include <pcb_track.h>
#include <pcb_textbox.h>
#include <pcb_table.h>
#include <pad.h>
#include <generators_mgr.h>
#include <zone.h>
#include <footprint.h>
#include <geometry/shape_line_chain.h>
#include <font/font.h>
#include <core/ignore.h>
#include <netclass.h>
#include <pcb_io/kicad_sexpr/pcb_io_kicad_sexpr.h>
#include <pcb_plot_params_parser.h>
#include <pcb_plot_params.h>
#include <locale_io.h>
#include <zones.h>
#include <pcb_io/kicad_sexpr/pcb_io_kicad_sexpr_parser.h>
#include <convert_basic_shapes_to_polygon.h> // for RECT_CHAMFER_POSITIONS definition
#include <math/util.h> // KiROUND, Clamp
#include <string_utils.h>
#include <wx/log.h>
#include <progress_reporter.h>
#include <board_stackup_manager/stackup_predefined_prms.h>
#include <pgm_base.h>
 
// For some reason wxWidgets is built with wxUSE_BASE64 unset so expose the wxWidgets
// base64 code. Needed for PCB_REFERENCE_IMAGE
#define wxUSE_BASE64 1
#include <wx/base64.h>
#include <wx/mstream.h>
 
// We currently represent board units as integers. Any values that are
// larger or smaller than those board units represent undefined behavior for
// the system. We limit values to the largest usable
// i.e. std::numeric_limits<int>::max().
// However to avoid issues in comparisons, use a slightly smaller value
// Note also the usable limits are much smaller to avoid overflows in intermediate
// calculations.
constexpr double INT_LIMIT = std::numeric_limits<int>::max() - 10;
 
using namespace PCB_KEYS_T;
 
 
void PCB_IO_KICAD_SEXPR_PARSER::init()
{
 m_showLegacySegmentZoneWarning = true;
 m_showLegacy5ZoneWarning = true;
 m_tooRecent = false;
 m_requiredVersion = 0;
 m_layerIndices.clear();
 m_layerMasks.clear();
 m_resetKIIDMap.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 layer = 0; layer < PCB_LAYER_ID_COUNT; ++layer )
 {
 std::string untranslated = TO_UTF8( wxString( LSET::Name( PCB_LAYER_ID( layer ) ) ) );
 
 m_layerIndices[ untranslated ] = PCB_LAYER_ID( layer );
 m_layerMasks[ untranslated ] = LSET( PCB_LAYER_ID( layer ) );
 }
 
 m_layerMasks[ "*.Cu" ] = LSET::AllCuMask();
 m_layerMasks[ "*In.Cu" ] = LSET::InternalCuMask();
 m_layerMasks[ "F&B.Cu" ] = LSET( 2, F_Cu, B_Cu );
 m_layerMasks[ "*.Adhes" ] = LSET( 2, B_Adhes, F_Adhes );
 m_layerMasks[ "*.Paste" ] = LSET( 2, B_Paste, F_Paste );
 m_layerMasks[ "*.Mask" ] = LSET( 2, B_Mask, F_Mask );
 m_layerMasks[ "*.SilkS" ] = LSET( 2, B_SilkS, F_SilkS );
 m_layerMasks[ "*.Fab" ] = LSET( 2, B_Fab, F_Fab );
 m_layerMasks[ "*.CrtYd" ] = LSET( 2, B_CrtYd, F_CrtYd );
 
 // This is for the first pretty & *.kicad_pcb formats, which had
 // Inner1_Cu - Inner14_Cu with the numbering sequence
 // reversed from the subsequent format's In1_Cu - In30_Cu numbering scheme.
 // The newer format brought in an additional 16 Cu layers and flipped the cu stack but
 // kept the gap between one of the outside layers and the last cu internal.
 
 for( int i=1; i<=14; ++i )
 {
 std::string key = StrPrintf( "Inner%d.Cu", i );
 
 m_layerMasks[ key ] = LSET( PCB_LAYER_ID( In15_Cu - i ) );
 }
}
 
 
void PCB_IO_KICAD_SEXPR_PARSER::checkpoint()
{
 if( m_progressReporter )
 {
 TIME_PT curTime = CLOCK::now();
 unsigned curLine = reader->LineNumber();
 auto delta = std::chrono::duration_cast<TIMEOUT>( curTime - m_lastProgressTime );
 
 if( delta > std::chrono::milliseconds( 250 ) )
 {
 m_progressReporter->SetCurrentProgress( ( (double) curLine )
 / std::max( 1U, m_lineCount ) );
 
 if( !m_progressReporter->KeepRefreshing() )
 THROW_IO_ERROR( _( "Open cancelled by user." ) );
 
 m_lastProgressTime = curTime;
 }
 }
}
 
 
void PCB_IO_KICAD_SEXPR_PARSER::skipCurrent()
{
 int curr_level = 0;
 T token;
 
 while( ( token = NextTok() ) != T_EOF )
 {
 if( token == T_LEFT )
 curr_level--;
 
 if( token == T_RIGHT )
 {
 curr_level++;
 
 if( curr_level > 0 )
 return;
 }
 }
}
 
 
void PCB_IO_KICAD_SEXPR_PARSER::pushValueIntoMap( int aIndex, int aValue )
{
 // Add aValue in netcode mapping (m_netCodes) at index aNetCode
 // ensure there is room in m_netCodes for that, and add room if needed.
 
 if( (int)m_netCodes.size() <= aIndex )
 m_netCodes.resize( static_cast<std::size_t>( aIndex ) + 1 );
 
 m_netCodes[aIndex] = aValue;
}
 
 
int PCB_IO_KICAD_SEXPR_PARSER::parseBoardUnits()
{
 // There should be no major rounding issues here, since the values in
 // the file are in mm and get converted to nano-meters.
 // See test program tools/test-nm-biu-to-ascii-mm-round-tripping.cpp
 // to confirm or experiment. Use a similar strategy in both places, here
 // and in the test program. Make that program with:
 // $ make test-nm-biu-to-ascii-mm-round-tripping
 auto retval = parseDouble() * pcbIUScale.IU_PER_MM;
 
 // N.B. we currently represent board units as integers. Any values that are
 // larger or smaller than those board units represent undefined behavior for
 // the system. We limit values to the largest that is visible on the screen
 return KiROUND( Clamp<double>( -INT_LIMIT, retval, INT_LIMIT ) );
}
 
 
int PCB_IO_KICAD_SEXPR_PARSER::parseBoardUnits( const char* aExpected )
{
 auto retval = parseDouble( aExpected ) * pcbIUScale.IU_PER_MM;
 
 // N.B. we currently represent board units as integers. Any values that are
 // larger or smaller than those board units represent undefined behavior for
 // the system. We limit values to the largest that is visible on the screen
 return KiROUND( Clamp<double>( -INT_LIMIT, retval, INT_LIMIT ) );
}
 
 
bool PCB_IO_KICAD_SEXPR_PARSER::parseBool()
{
 T token = NextTok();
 
 if( token == T_yes )
 return true;
 else if( token == T_no )
 return false;
 else
 Expecting( "yes or no" );
 
 return false;
}
 
 
/*
 * e.g. "hide", "hide)", "(hide yes)"
 */
bool PCB_IO_KICAD_SEXPR_PARSER::parseMaybeAbsentBool( bool aDefaultValue )
{
 bool ret = aDefaultValue;
 
 if( PrevTok() == T_LEFT )
 {
 T token = NextTok();
 
 // "hide)"
 if( static_cast<int>( token ) == DSN_RIGHT )
 return aDefaultValue;
 
 if( token == T_yes || token == T_true )
 ret = true;
 else if( token == T_no || token == T_false )
 ret = false;
 else
 Expecting( "yes or no" );
 
 NeedRIGHT();
 }
 else
 {
 // "hide"
 return aDefaultValue;
 }
 
 return ret;
}
 
 
wxString PCB_IO_KICAD_SEXPR_PARSER::GetRequiredVersion()
{
 int year, month, day;
 
 year = m_requiredVersion / 10000;
 month = ( m_requiredVersion / 100 ) - ( year * 100 );
 day = m_requiredVersion - ( year * 10000 ) - ( month * 100 );
 
 // wx throws an assertion, not a catchable exception, when the date is invalid.
 // User input shouldn't give wx asserts, so check manually and throw a proper
 // error instead
 if( day <= 0 || month <= 0 || month > 12 ||
 day > wxDateTime::GetNumberOfDays( (wxDateTime::Month)( month - 1 ), year ) )
 {
 wxString err;
 err.Printf( _( "Cannot interpret date code %d" ), m_requiredVersion );
 THROW_PARSE_ERROR( err, CurSource(), CurLine(), CurLineNumber(), CurOffset() );
 }
 
 wxDateTime date( day, (wxDateTime::Month)( month - 1 ), year, 0, 0, 0, 0 );
 return date.FormatDate();
}
 
 
VECTOR2I PCB_IO_KICAD_SEXPR_PARSER::parseXY()
{
 if( CurTok() != T_LEFT )
 NeedLEFT();
 
 VECTOR2I 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_IO_KICAD_SEXPR_PARSER::parseOutlinePoints( SHAPE_LINE_CHAIN& aPoly )
{
 if( CurTok() != T_LEFT )
 NeedLEFT();
 
 T token = NextTok();
 
 switch( token )
 {
 case T_xy:
 {
 int x = parseBoardUnits( "X coordinate" );
 int y = parseBoardUnits( "Y coordinate" );
 
 NeedRIGHT();
 
 aPoly.Append( x, y );
 break;
 }
 case T_arc:
 {
 bool has_start = false;
 bool has_mid = false;
 bool has_end = false;
 
 VECTOR2I arc_start, arc_mid, arc_end;
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 if( token != T_LEFT )
 Expecting( T_LEFT );
 
 token = NextTok();
 
 switch( token )
 {
 case T_start:
 arc_start.x = parseBoardUnits( "start x" );
 arc_start.y = parseBoardUnits( "start y" );
 has_start = true;
 break;
 
 case T_mid:
 arc_mid.x = parseBoardUnits( "mid x" );
 arc_mid.y = parseBoardUnits( "mid y" );
 has_mid = true;
 break;
 
 case T_end:
 arc_end.x = parseBoardUnits( "end x" );
 arc_end.y = parseBoardUnits( "end y" );
 has_end = true;
 break;
 
 default:
 Expecting( "start, mid or end" );
 }
 
 NeedRIGHT();
 }
 
 if( !has_start )
 Expecting( "start" );
 
 if( !has_mid )
 Expecting( "mid" );
 
 if( !has_end )
 Expecting( "end" );
 
 SHAPE_ARC arc( arc_start, arc_mid, arc_end, 0 );
 
 aPoly.Append( arc );
 
 if( token != T_RIGHT )
 Expecting( T_RIGHT );
 
 break;
 }
 default:
 Expecting( "xy or arc" );
 }
}
 
 
void PCB_IO_KICAD_SEXPR_PARSER::parseXY( int* aX, int* aY )
{
 VECTOR2I pt = parseXY();
 
 if( aX )
 *aX = pt.x;
 
 if( aY )
 *aY = pt.y;
}
 
 
void PCB_IO_KICAD_SEXPR_PARSER::parseMargins( int& aLeft, int& aTop, int& aRight, int& aBottom )
{
 aLeft = parseBoardUnits( "left margin" );
 aTop = parseBoardUnits( "top margin" );
 aRight = parseBoardUnits( "right margin" );
 aBottom = parseBoardUnits( "bottom margin" );
}
 
 
std::pair<wxString, wxString> PCB_IO_KICAD_SEXPR_PARSER::parseBoardProperty()
{
 wxString pName;
 wxString pValue;
 
 NeedSYMBOL();
 pName = FromUTF8();
 NeedSYMBOL();
 pValue = FromUTF8();
 NeedRIGHT();
 
 return { pName, pValue };
}
 
 
void PCB_IO_KICAD_SEXPR_PARSER::parseTEARDROP_PARAMETERS( TEARDROP_PARAMETERS* tdParams )
{
 tdParams->m_Enabled = false;
 tdParams->m_AllowUseTwoTracks = false;
 tdParams->m_TdOnPadsInZones = true;
 
 for( T token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 if( token == T_LEFT )
 token = NextTok();
 
 switch( token )
 {
 case T_enabled:
 tdParams->m_Enabled = parseMaybeAbsentBool( true );
 break;
 
 case T_allow_two_segments:
 tdParams->m_AllowUseTwoTracks = parseMaybeAbsentBool( true );
 break;
 
 case T_prefer_zone_connections:
 tdParams->m_TdOnPadsInZones = !parseMaybeAbsentBool( false );
 break;
 
 case T_best_length_ratio:
 tdParams->m_BestLengthRatio = parseDouble( "teardrop best length ratio" );
 NeedRIGHT();
 break;
 
 case T_max_length:
 tdParams->m_TdMaxLen = parseBoardUnits( "teardrop max length" );
 NeedRIGHT();
 break;
 
 case T_best_width_ratio:
 tdParams->m_BestWidthRatio = parseDouble( "teardrop best width ratio" );
 NeedRIGHT();
 break;
 
 case T_max_width:
 tdParams->m_TdMaxWidth = parseBoardUnits( "teardrop max width" );
 NeedRIGHT();
 break;
 
 case T_curve_points:
 tdParams->m_CurveSegCount = parseInt( "teardrop curve points count" );
 NeedRIGHT();
 break;
 
 case T_filter_ratio:
 tdParams->m_WidthtoSizeFilterRatio = parseDouble( "teardrop filter ratio" );
 NeedRIGHT();
 break;
 
 default:
 Expecting( "enabled, allow_two_segments, prefer_zone_connections, best_length_ratio, "
 "max_length, best_width_ratio, max_width, curve_points or filter_ratio" );
 }
 }
}
 
 
void PCB_IO_KICAD_SEXPR_PARSER::parseEDA_TEXT( EDA_TEXT* aText )
{
 wxCHECK_RET( CurTok() == T_effects,
 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as EDA_TEXT." ) );
 
 // These are not written out if center/center and/or no mirror,
 // so we have to make sure we start that way.
 // (these parameters will be set in T_justify section, when existing)
 aText->SetHorizJustify( GR_TEXT_H_ALIGN_CENTER );
 aText->SetVertJustify( GR_TEXT_V_ALIGN_CENTER );
 aText->SetMirrored( false );
 
 // In version 20210606 the notation for overbars was changed from `~...~` to `~{...}`.
 // We need to convert the old syntax to the new one.
 if( m_requiredVersion < 20210606 )
 aText->SetText( ConvertToNewOverbarNotation( aText->GetText() ) );
 
 T token;
 
 // Prior to v5.0 text size was omitted from file format if equal to 60mils
 // Now, it is always explicitly written to file
 bool foundTextSize = false;
 wxString faceName;
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 if( token == 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_face:
 NeedSYMBOL();
 faceName = FromUTF8();
 NeedRIGHT();
 break;
 
 case T_size:
 {
 VECTOR2I sz;
 sz.y = parseBoardUnits( "text height" );
 sz.x = parseBoardUnits( "text width" );
 aText->SetTextSize( sz );
 NeedRIGHT();
 
 foundTextSize = true;
 break;
 }
 
 case T_line_spacing:
 aText->SetLineSpacing( parseDouble( "line spacing" ) );
 NeedRIGHT();
 break;
 
 case T_thickness:
 aText->SetTextThickness( parseBoardUnits( "text thickness" ) );
 NeedRIGHT();
 break;
 
 case T_bold:
 {
 bool value = parseMaybeAbsentBool( true );
 aText->SetBoldFlag( value );
 }
 break;
 
 case T_italic:
 {
 bool value = parseMaybeAbsentBool( true );
 aText->SetItalic( value );
 }
 break;
 
 default:
 Expecting( "face, size, line_spacing, thickness, bold, or italic" );
 }
 }
 
 if( !faceName.IsEmpty() )
 {
 aText->SetFont( KIFONT::FONT::GetFont( faceName, aText->IsBold(),
 aText->IsItalic() ) );
 }
 
 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_H_ALIGN_LEFT );
 break;
 
 case T_right:
 aText->SetHorizJustify( GR_TEXT_H_ALIGN_RIGHT );
 break;
 
 case T_top:
 aText->SetVertJustify( GR_TEXT_V_ALIGN_TOP );
 break;
 
 case T_bottom:
 aText->SetVertJustify( GR_TEXT_V_ALIGN_BOTTOM );
 break;
 
 case T_mirror:
 aText->SetMirrored( true );
 break;
 
 default:
 Expecting( "left, right, top, bottom, or mirror" );
 }
 
 }
 
 break;
 
 case T_hide:
 aText->SetVisible( !parseMaybeAbsentBool( true ) );
 break;
 
 default:
 Expecting( "font, justify, or hide" );
 }
 }
 
 // Text size was not specified in file, force legacy default units
 // 60mils is 1.524mm
 if( !foundTextSize )
 {
 const double defaultTextSize = 1.524 * pcbIUScale.IU_PER_MM;
 
 aText->SetTextSize( VECTOR2I( defaultTextSize, defaultTextSize ) );
 }
}
 
 
void PCB_IO_KICAD_SEXPR_PARSER::parseRenderCache( EDA_TEXT* text )
{
 T token;
 
 NeedSYMBOLorNUMBER();
 wxString cacheText = From_UTF8( CurText() );
 EDA_ANGLE cacheAngle( parseDouble( "render cache angle" ), DEGREES_T );
 
 text->SetupRenderCache( cacheText, cacheAngle );
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 if( token != T_LEFT )
 Expecting( T_LEFT );
 
 token = NextTok();
 
 if( token != T_polygon )
 Expecting( T_polygon );
 
 SHAPE_POLY_SET poly;
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 if( token != T_LEFT )
 Expecting( T_LEFT );
 
 token = NextTok();
 
 if( token != T_pts )
 Expecting( T_pts );
 
 SHAPE_LINE_CHAIN lineChain;
 
 while( (token = NextTok() ) != T_RIGHT )
 parseOutlinePoints( lineChain );
 
 lineChain.SetClosed( true );
 
 if( poly.OutlineCount() == 0 )
 poly.AddOutline( lineChain );
 else
 poly.AddHole( lineChain );
 }
 
 text->AddRenderCacheGlyph( poly );
 }
}
 
 
FP_3DMODEL* PCB_IO_KICAD_SEXPR_PARSER::parse3DModel()
{
 wxCHECK_MSG( CurTok() == T_model, nullptr,
 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as FP_3DMODEL." ) );
 
 T token;
 
 FP_3DMODEL* n3D = new FP_3DMODEL;
 NeedSYMBOLorNUMBER();
 n3D->m_Filename = FromUTF8();
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 if( token == T_LEFT )
 token = NextTok();
 
 switch( token )
 {
 case T_at:
 NeedLEFT();
 token = NextTok();
 
 if( token != T_xyz )
 Expecting( T_xyz );
 
 /* Note:
 * Prior to KiCad v5, model offset was designated by "at",
 * and the units were in inches.
 * Now we use mm, but support reading of legacy files
 */
 
 n3D->m_Offset.x = parseDouble( "x value" ) * 25.4f;
 n3D->m_Offset.y = parseDouble( "y value" ) * 25.4f;
 n3D->m_Offset.z = parseDouble( "z value" ) * 25.4f;
 
 NeedRIGHT(); // xyz
 NeedRIGHT(); // at
 break;
 
 case T_hide:
 {
 bool hide = parseMaybeAbsentBool( true );
 n3D->m_Show = !hide;
 break;
 }
 
 case T_opacity:
 n3D->m_Opacity = parseDouble( "opacity value" );
 NeedRIGHT();
 break;
 
 case T_offset:
 NeedLEFT();
 token = NextTok();
 
 if( token != T_xyz )
 Expecting( T_xyz );
 
 /*
 * 3D model offset is in mm
 */
 n3D->m_Offset.x = parseDouble( "x value" );
 n3D->m_Offset.y = parseDouble( "y value" );
 n3D->m_Offset.z = parseDouble( "z value" );
 
 NeedRIGHT(); // xyz
 NeedRIGHT(); // offset
 break;
 
 case T_scale:
 NeedLEFT();
 token = NextTok();
 
 if( token != T_xyz )
 Expecting( T_xyz );
 
 n3D->m_Scale.x = parseDouble( "x value" );
 n3D->m_Scale.y = parseDouble( "y value" );
 n3D->m_Scale.z = parseDouble( "z value" );
 
 NeedRIGHT(); // xyz
 NeedRIGHT(); // scale
 break;
 
 case T_rotate:
 NeedLEFT();
 token = NextTok();
 
 if( token != T_xyz )
 Expecting( T_xyz );
 
 n3D->m_Rotation.x = parseDouble( "x value" );
 n3D->m_Rotation.y = parseDouble( "y value" );
 n3D->m_Rotation.z = parseDouble( "z value" );
 
 NeedRIGHT(); // xyz
 NeedRIGHT(); // rotate
 break;
 
 default:
 Expecting( "at, hide, opacity, offset, scale, or rotate" );
 }
 
 }
 
 return n3D;
}
 
 
bool PCB_IO_KICAD_SEXPR_PARSER::IsValidBoardHeader()
{
 LOCALE_IO toggle;
 
 m_groupInfos.clear();
 
 // See Parse() - FOOTPRINTS can be prefixed with an initial block of single line comments,
 // eventually BOARD might be the same
 ReadCommentLines();
 
 if( CurTok() != T_LEFT )
 return false;
 
 if( NextTok() != T_kicad_pcb)
 return false;
 
 return true;
}
 
 
BOARD_ITEM* PCB_IO_KICAD_SEXPR_PARSER::Parse()
{
 T token;
 BOARD_ITEM* item;
 LOCALE_IO toggle;
 
 m_groupInfos.clear();
 
 // FOOTPRINTS can be prefixed with an initial block of single line comments and these are
 // kept for Format() so they round trip in s-expression form. BOARDs might eventually do
 // the same, but currently do not.
 std::unique_ptr<wxArrayString> initial_comments( ReadCommentLines() );
 
 token = CurTok();
 
 if( token == -1 ) // EOF
 Unexpected( token );
 
 if( token != T_LEFT )
 Expecting( T_LEFT );
 
 switch( NextTok() )
 {
 case T_kicad_pcb:
 if( m_board == nullptr )
 m_board = new BOARD();
 
 item = (BOARD_ITEM*) parseBOARD();
 break;
 
 case T_module: // legacy token
 case T_footprint:
 item = (BOARD_ITEM*) parseFOOTPRINT( initial_comments.release() );
 
 // Locking a footprint has no meaning outside of a board.
 item->SetLocked( false );
 break;
 
 default:
 wxString err;
 err.Printf( _( "Unknown token '%s'" ), FromUTF8() );
 THROW_PARSE_ERROR( err, CurSource(), CurLine(), CurLineNumber(), CurOffset() );
 }
 
 resolveGroups( item );
 
 return item;
}
 
 
BOARD* PCB_IO_KICAD_SEXPR_PARSER::parseBOARD()
{
 try
 {
 return parseBOARD_unchecked();
 }
 catch( const PARSE_ERROR& parse_error )
 {
 if( m_tooRecent )
 throw FUTURE_FORMAT_ERROR( parse_error, GetRequiredVersion() );
 else
 throw;
 }
}
 
 
BOARD* PCB_IO_KICAD_SEXPR_PARSER::parseBOARD_unchecked()
{
 T token;
 std::map<wxString, wxString> properties;
 
 parseHeader();
 
 auto checkVersion =
 [&]()
 {
 if( m_requiredVersion > SEXPR_BOARD_FILE_VERSION )
 {
 throw FUTURE_FORMAT_ERROR( fmt::format( "{}", m_requiredVersion ),
 m_generatorVersion );
 }
 };
 
 std::vector<BOARD_ITEM*> bulkAddedItems;
 BOARD_ITEM* item = nullptr;
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 checkpoint();
 
 if( token != T_LEFT )
 Expecting( T_LEFT );
 
 token = NextTok();
 
 if( token == T_page && m_requiredVersion <= 20200119 )
 token = T_paper;
 
 switch( token )
 {
 case T_host: // legacy token
 NeedSYMBOL();
 m_board->SetGenerator( FromUTF8() );
 
 // Older formats included build data
 if( m_requiredVersion < BOARD_FILE_HOST_VERSION )
 NeedSYMBOL();
 
 NeedRIGHT();
 break;
 
 case T_generator:
 NeedSYMBOL();
 m_board->SetGenerator( FromUTF8() );
 NeedRIGHT();
 break;
 
 case T_generator_version:
 {
 NeedSYMBOL();
 m_generatorVersion = FromUTF8();
 NeedRIGHT();
 
 // If the format includes a generator version, by this point we have enough info to
 // do the version check here
 checkVersion();
 
 break;
 }
 
 case T_general:
 // Do another version check here, for older files that do not include generator_version
 checkVersion();
 
 parseGeneralSection();
 break;
 
 case T_paper:
 parsePAGE_INFO();
 break;
 
 case T_title_block:
 parseTITLE_BLOCK();
 break;
 
 case T_layers:
 parseLayers();
 break;
 
 case T_setup:
 parseSetup();
 break;
 
 case T_property:
 properties.insert( parseBoardProperty() );
 break;
 
 case T_net:
 parseNETINFO_ITEM();
 break;
 
 case T_net_class:
 parseNETCLASS();
 m_board->m_LegacyNetclassesLoaded = true;
 break;
 
 case T_gr_arc:
 case T_gr_curve:
 case T_gr_line:
 case T_gr_poly:
 case T_gr_circle:
 case T_gr_rect:
 item = parsePCB_SHAPE( m_board );
 m_board->Add( item, ADD_MODE::BULK_APPEND, true );
 bulkAddedItems.push_back( item );
 break;
 
 case T_image:
 item = parsePCB_REFERENCE_IMAGE( m_board );
 m_board->Add( item, ADD_MODE::BULK_APPEND, true );
 bulkAddedItems.push_back( item );
 break;
 
 case T_gr_text:
 item = parsePCB_TEXT( m_board );
 m_board->Add( item, ADD_MODE::BULK_APPEND, true );
 bulkAddedItems.push_back( item );
 break;
 
 case T_gr_text_box:
 item = parsePCB_TEXTBOX( m_board );
 m_board->Add( item, ADD_MODE::BULK_APPEND, true );
 bulkAddedItems.push_back( item );
 break;
 
 case T_table:
 item = parsePCB_TABLE( m_board );
 m_board->Add( item, ADD_MODE::BULK_APPEND, true );
 bulkAddedItems.push_back( item );
 break;
 
 case T_dimension:
 item = parseDIMENSION( m_board );
 m_board->Add( item, ADD_MODE::BULK_APPEND, true );
 bulkAddedItems.push_back( item );
 break;
 
 case T_module: // legacy token
 case T_footprint:
 item = parseFOOTPRINT();
 m_board->Add( item, ADD_MODE::BULK_APPEND, true );
 bulkAddedItems.push_back( item );
 break;
 
 case T_segment:
 item = parsePCB_TRACK();
 m_board->Add( item, ADD_MODE::BULK_APPEND, true );
 bulkAddedItems.push_back( item );
 break;
 
 case T_arc:
 item = parseARC();
 m_board->Add( item, ADD_MODE::BULK_APPEND, true );
 bulkAddedItems.push_back( item );
 break;
 
 case T_group:
 parseGROUP( m_board );
 break;
 
 case T_generated:
 parseGENERATOR( m_board );
 break;
 
 case T_via:
 item = parsePCB_VIA();
 m_board->Add( item, ADD_MODE::BULK_APPEND, true );
 bulkAddedItems.push_back( item );
 break;
 
 case T_zone:
 item = parseZONE( m_board );
 m_board->Add( item, ADD_MODE::BULK_APPEND, true );
 bulkAddedItems.push_back( item );
 break;
 
 case T_target:
 item = parsePCB_TARGET();
 m_board->Add( item, ADD_MODE::BULK_APPEND, true );
 bulkAddedItems.push_back( item );
 break;
 
 default:
 wxString err;
 err.Printf( _( "Unknown token '%s'" ), FromUTF8() );
 THROW_PARSE_ERROR( err, CurSource(), CurLine(), CurLineNumber(), CurOffset() );
 }
 }
 
 if( bulkAddedItems.size() > 0 )
 m_board->FinalizeBulkAdd( bulkAddedItems );
 
 m_board->SetProperties( properties );
 
 if( m_undefinedLayers.size() > 0 )
 {
 PCB_LAYER_ID destLayer = Cmts_User;
 wxString msg, undefinedLayerNames, destLayerName;
 
 for( const wxString& layerName : m_undefinedLayers )
 {
 if( !undefinedLayerNames.IsEmpty() )
 undefinedLayerNames += wxT( ", " );
 
 undefinedLayerNames += layerName;
 }
 
 destLayerName = m_board->GetLayerName( destLayer );
 
 if( Pgm().IsGUI() && m_queryUserCallback )
 {
 msg.Printf( _( "Items found on undefined layers (%s).\n"
 "Do you wish to rescue them to the %s layer?" ),
 undefinedLayerNames,
 destLayerName );
 
 if( !m_queryUserCallback( _( "Undefined Layers Warning" ), wxICON_WARNING, msg,
 _( "Rescue" ) ) )
 {
 THROW_IO_ERROR( wxT( "CANCEL" ) );
 }
 
 auto visitItem = [&]( BOARD_ITEM* curr_item )
 {
 if( curr_item->GetLayer() == Rescue )
 curr_item->SetLayer( destLayer );
 };
 
 for( PCB_TRACK* track : m_board->Tracks() )
 {
 if( track->Type() == PCB_VIA_T )
 {
 PCB_VIA* via = static_cast<PCB_VIA*>( track );
 PCB_LAYER_ID top_layer, bottom_layer;
 
 if( via->GetViaType() == VIATYPE::THROUGH )
 continue;
 
 via->LayerPair( &top_layer, &bottom_layer );
 
 if( top_layer == Rescue || bottom_layer == Rescue )
 {
 if( top_layer == Rescue )
 top_layer = F_Cu;
 
 if( bottom_layer == Rescue )
 bottom_layer = B_Cu;
 
 via->SetLayerPair( top_layer, bottom_layer );
 }
 }
 else
 {
 visitItem( track );
 }
 }
 
 for( BOARD_ITEM* zone : m_board->Zones() )
 visitItem( zone );
 
 for( BOARD_ITEM* drawing : m_board->Drawings() )
 visitItem( drawing );
 
 for( FOOTPRINT* fp : m_board->Footprints() )
 {
 for( BOARD_ITEM* drawing : fp->GraphicalItems() )
 visitItem( drawing );
 
 for( BOARD_ITEM* zone : fp->Zones() )
 visitItem( zone );
 }
 
 m_undefinedLayers.clear();
 }
 else
 {
 THROW_IO_ERROR( wxT( "One or more undefined undefinedLayerNames was found; "
 "open the board in the PCB Editor to resolve." ) );
 }
 }
 
 // Clear unused zone data
 {
 LSET layers = m_board->GetEnabledLayers();
 
 for( BOARD_ITEM* zone : m_board->Zones() )
 {
 ZONE* z = static_cast<ZONE*>( zone );
 
 z->SetLayerSet( z->GetLayerSet() & layers );
 }
 }
 
 return m_board;
}
 
 
void PCB_IO_KICAD_SEXPR_PARSER::resolveGroups( BOARD_ITEM* aParent )
{
 auto getItem = [&]( const KIID& aId )
 {
 BOARD_ITEM* aItem = nullptr;
 
 if( BOARD* board = dynamic_cast<BOARD*>( aParent ) )
 {
 aItem = board->GetItem( aId );
 }
 else if( FOOTPRINT* footprint = dynamic_cast<FOOTPRINT*>( aParent ) )
 {
 footprint->RunOnChildren(
 [&]( BOARD_ITEM* child )
 {
 if( child->m_Uuid == aId )
 aItem = child;
 } );
 }
 
 return aItem;
 };
 
 // Now that we've parsed the other Uuids in the file we can resolve the uuids referred
 // to in the group declarations we saw.
 //
 // First add all group objects so subsequent GetItem() calls for nested groups work.
 
 std::vector<const GROUP_INFO*> groupTypeObjects;
 
 for( const GROUP_INFO& groupInfo : m_groupInfos )
 groupTypeObjects.emplace_back( &groupInfo );
 
 for( const GENERATOR_INFO& genInfo : m_generatorInfos )
 groupTypeObjects.emplace_back( &genInfo );
 
 for( const GROUP_INFO* groupInfo : groupTypeObjects )
 {
 PCB_GROUP* group = nullptr;
 
 if( const GENERATOR_INFO* genInfo = dynamic_cast<const GENERATOR_INFO*>( groupInfo ) )
 {
 GENERATORS_MGR& mgr = GENERATORS_MGR::Instance();
 
 PCB_GENERATOR* gen;
 group = gen = mgr.CreateFromType( genInfo->genType );
 
 if( !gen )
 {
 THROW_IO_ERROR( wxString::Format(
 _( "Cannot create generated object of type '%s'" ), genInfo->genType ) );
 }
 
 gen->SetLayer( genInfo->layer );
 gen->SetProperties( genInfo->properties );
 }
 else
 {
 group = new PCB_GROUP( groupInfo->parent );
 group->SetName( groupInfo->name );
 }
 
 const_cast<KIID&>( group->m_Uuid ) = groupInfo->uuid;
 
 if( groupInfo->locked )
 group->SetLocked( true );
 
 if( groupInfo->parent->Type() == PCB_FOOTPRINT_T )
 static_cast<FOOTPRINT*>( groupInfo->parent )->Add( group, ADD_MODE::INSERT, true );
 else
 static_cast<BOARD*>( groupInfo->parent )->Add( group, ADD_MODE::INSERT, true );
 }
 
 wxString error;
 
 for( const GROUP_INFO* groupInfo : groupTypeObjects )
 {
 if( PCB_GROUP* group = dynamic_cast<PCB_GROUP*>( getItem( groupInfo->uuid ) ) )
 {
 for( const KIID& aUuid : groupInfo->memberUuids )
 {
 BOARD_ITEM* item = nullptr;
 
 if( m_appendToExisting )
 item = getItem( m_resetKIIDMap[ aUuid.AsString() ] );
 else
 item = getItem( aUuid );
 
 if( !item || item->Type() == NOT_USED )
 {
 // This is the deleted item singleton, which means we didn't find the uuid.
 continue;
 }
 
 // We used to allow fp items in non-footprint groups. It was a mistake. Check
 // to make sure they the item and group are owned by the same parent (will both
 // be nullptr in the board case).
 if( item->GetParentFootprint() == group->GetParentFootprint() )
 group->AddItem( item );
 }
 }
 }
 
 // Don't allow group cycles
 if( m_board )
 m_board->GroupsSanityCheck( true );
}
 
 
void PCB_IO_KICAD_SEXPR_PARSER::parseHeader()
{
 wxCHECK_RET( CurTok() == T_kicad_pcb,
 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as a header." ) );
 
 NeedLEFT();
 
 T tok = NextTok();
 
 if( tok == T_version )
 {
 m_requiredVersion = parseInt( FromUTF8().mb_str( wxConvUTF8 ) );
 NeedRIGHT();
 }
 else
 {
 m_requiredVersion = 20201115; // Last version before we started writing version #s
 // in footprint files as well as board files.
 }
 
 m_tooRecent = ( m_requiredVersion > SEXPR_BOARD_FILE_VERSION );
 
 m_board->SetFileFormatVersionAtLoad( m_requiredVersion );
}
 
 
void PCB_IO_KICAD_SEXPR_PARSER::parseGeneralSection()
{
 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_legacy_teardrops:
 m_board->SetLegacyTeardrops( parseMaybeAbsentBool( true ) );
 break;
 
 default: // Skip everything else.
 while( ( token = NextTok() ) != T_RIGHT )
 {
 if( !IsSymbol( token ) && token != T_NUMBER )
 Expecting( "symbol or number" );
 }
 }
 }
}
 
 
void PCB_IO_KICAD_SEXPR_PARSER::parsePAGE_INFO()
{
 wxCHECK_RET( ( CurTok() == T_page && m_requiredVersion <= 20200119 ) || CurTok() == T_paper,
 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." ), 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 < MIN_PAGE_SIZE_MM )
 width = MIN_PAGE_SIZE_MM;
 else if( width > MAX_PAGE_SIZE_PCBNEW_MM )
 width = MAX_PAGE_SIZE_PCBNEW_MM;
 
 double height = parseDouble( "height" ); // height in mm
 
 if( height < MIN_PAGE_SIZE_MM )
 height = MIN_PAGE_SIZE_MM;
 else if( height > MAX_PAGE_SIZE_PCBNEW_MM )
 height = MAX_PAGE_SIZE_PCBNEW_MM;
 
 pageInfo.SetWidthMM( width );
 pageInfo.SetHeightMM( height );
 }
 
 token = NextTok();
 
 if( token == T_portrait )
 {
 pageInfo.SetPortrait( true );
 NeedRIGHT();
 }
 else if( token != T_RIGHT )
 {
 Expecting( "portrait|)" );
 }
 
 m_board->SetPageSettings( pageInfo );
}
 
 
void PCB_IO_KICAD_SEXPR_PARSER::parseTITLE_BLOCK()
{
 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:
 NextTok();
 titleBlock.SetTitle( FromUTF8() );
 break;
 
 case T_date:
 NextTok();
 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.SetComment( 0, FromUTF8() );
 break;
 
 case 2:
 NextTok();
 titleBlock.SetComment( 1, FromUTF8() );
 break;
 
 case 3:
 NextTok();
 titleBlock.SetComment( 2, FromUTF8() );
 break;
 
 case 4:
 NextTok();
 titleBlock.SetComment( 3, FromUTF8() );
 break;
 
 case 5:
 NextTok();
 titleBlock.SetComment( 4, FromUTF8() );
 break;
 
 case 6:
 NextTok();
 titleBlock.SetComment( 5, FromUTF8() );
 break;
 
 case 7:
 NextTok();
 titleBlock.SetComment( 6, FromUTF8() );
 break;
 
 case 8:
 NextTok();
 titleBlock.SetComment( 7, FromUTF8() );
 break;
 
 case 9:
 NextTok();
 titleBlock.SetComment( 8, 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_IO_KICAD_SEXPR_PARSER::parseLayer( LAYER* aLayer )
{
 T token;
 
 std::string name;
 std::string userName;
 std::string type;
 bool isVisible = true;
 
 aLayer->clear();
 
 if( CurTok() != T_LEFT )
 Expecting( T_LEFT );
 
 // this layer_num is not used, we DO depend on LAYER_T however.
 int layer_num = parseInt( "layer index" );
 
 NeedSYMBOLorNUMBER();
 name = CurText();
 
 NeedSYMBOL();
 type = CurText();
 
 token = NextTok();
 
 // @todo Figure out why we are looking for a hide token in the layer definition.
 if( token == T_hide )
 {
 isVisible = false;
 NeedRIGHT();
 }
 else if( token == T_STRING )
 {
 userName = CurText();
 NeedRIGHT();
 }
 else if( token != T_RIGHT )
 {
 Expecting( "hide, user defined name, or )" );
 }
 
 aLayer->m_name = From_UTF8( name.c_str() );
 aLayer->m_type = LAYER::ParseType( type.c_str() );
 aLayer->m_number = layer_num;
 aLayer->m_visible = isVisible;
 
 if( !userName.empty() )
 aLayer->m_userName = From_UTF8( userName.c_str() );
 
 // The canonical name will get reset back to the default for copper layer on the next
 // save. The user defined name is now a separate optional layer token from the canonical
 // name.
 if( aLayer->m_name != LSET::Name( static_cast<PCB_LAYER_ID>( aLayer->m_number ) ) )
 aLayer->m_userName = aLayer->m_name;
}
 
 
void PCB_IO_KICAD_SEXPR_PARSER::parseBoardStackup()
{
 T token;
 wxString name;
 int dielectric_idx = 1; // the index of dielectric layers
 BOARD_STACKUP& stackup = m_board->GetDesignSettings().GetStackupDescriptor();
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 if( CurTok() != T_LEFT )
 Expecting( T_LEFT );
 
 token = NextTok();
 
 if( token != T_layer )
 {
 switch( token )
 {
 case T_copper_finish:
 NeedSYMBOL();
 stackup.m_FinishType = FromUTF8();
 NeedRIGHT();
 break;
 
 case T_edge_plating:
 token = NextTok();
 stackup.m_EdgePlating = token == T_yes;
 NeedRIGHT();
 break;
 
 case T_dielectric_constraints:
 token = NextTok();
 stackup.m_HasDielectricConstrains = token == T_yes;
 NeedRIGHT();
 break;
 
 case T_edge_connector:
 token = NextTok();
 stackup.m_EdgeConnectorConstraints = BS_EDGE_CONNECTOR_NONE;
 
 if( token == T_yes )
 stackup.m_EdgeConnectorConstraints = BS_EDGE_CONNECTOR_IN_USE;
 else if( token == T_bevelled )
 stackup.m_EdgeConnectorConstraints = BS_EDGE_CONNECTOR_BEVELLED;
 
 NeedRIGHT();
 break;
 
 case T_castellated_pads:
 token = NextTok();
 stackup.m_CastellatedPads = token == T_yes;
 NeedRIGHT();
 break;
 
 default:
 // Currently, skip this item if not defined, because the stackup def
 // is a moving target
 //Expecting( "copper_finish, edge_plating, dielectric_constrains, edge_connector, castellated_pads" );
 skipCurrent();
 break;
 }
 
 continue;
 }
 
 NeedSYMBOL();
 name = FromUTF8();
 
 // init the layer id. For dielectric, layer id = UNDEFINED_LAYER
 PCB_LAYER_ID layerId = m_board->GetLayerID( name );
 
 // Init the type
 BOARD_STACKUP_ITEM_TYPE type = BS_ITEM_TYPE_UNDEFINED;
 
 if( layerId == F_SilkS || layerId == B_SilkS )
 type = BS_ITEM_TYPE_SILKSCREEN;
 else if( layerId == F_Mask || layerId == B_Mask )
 type = BS_ITEM_TYPE_SOLDERMASK;
 else if( layerId == F_Paste || layerId == B_Paste )
 type = BS_ITEM_TYPE_SOLDERPASTE;
 else if( layerId == UNDEFINED_LAYER )
 type = BS_ITEM_TYPE_DIELECTRIC;
 else if( layerId >= F_Cu && layerId <= B_Cu )
 type = BS_ITEM_TYPE_COPPER;
 
 BOARD_STACKUP_ITEM* item = nullptr;
 
 if( type != BS_ITEM_TYPE_UNDEFINED )
 {
 item = new BOARD_STACKUP_ITEM( type );
 item->SetBrdLayerId( layerId );
 
 if( type == BS_ITEM_TYPE_DIELECTRIC )
 item->SetDielectricLayerId( dielectric_idx++ );
 
 stackup.Add( item );
 }
 else
 {
 Expecting( "layer_name" );
 }
 
 bool has_next_sublayer = true;
 int sublayer_idx = 0; // the index of dielectric sub layers
 // sublayer 0 is always existing (main sublayer)
 
 while( has_next_sublayer )
 {
 has_next_sublayer = false;
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 if( token == T_addsublayer )
 {
 has_next_sublayer = true;
 break;
 }
 
 if( token == T_LEFT )
 {
 token = NextTok();
 
 switch( token )
 {
 case T_type:
 NeedSYMBOL();
 item->SetTypeName( FromUTF8() );
 NeedRIGHT();
 break;
 
 case T_thickness:
 item->SetThickness( parseBoardUnits( T_thickness ), sublayer_idx );
 token = NextTok();
 
 if( token == T_LEFT )
 break;
 
 if( token == T_locked )
 {
 // Dielectric thickness can be locked (for impedance controlled layers)
 if( type == BS_ITEM_TYPE_DIELECTRIC )
 item->SetThicknessLocked( true, sublayer_idx );
 
 NeedRIGHT();
 }
 
 break;
 
 case T_material:
 NeedSYMBOL();
 item->SetMaterial( FromUTF8(), sublayer_idx );
 NeedRIGHT();
 break;
 
 case T_epsilon_r:
 NextTok();
 item->SetEpsilonR( parseDouble(), sublayer_idx );
 NeedRIGHT();
 break;
 
 case T_loss_tangent:
 NextTok();
 item->SetLossTangent( parseDouble(), sublayer_idx );
 NeedRIGHT();
 break;
 
 case T_color:
 NeedSYMBOL();
 name = FromUTF8();
 
 // Older versions didn't store opacity with custom colors
 if( name.StartsWith( wxT( "#" ) ) && m_requiredVersion < 20210824 )
 {
 KIGFX::COLOR4D color( name );
 
 if( item->GetType() == BS_ITEM_TYPE_SOLDERMASK )
 color = color.WithAlpha( DEFAULT_SOLDERMASK_OPACITY );
 else
 color = color.WithAlpha( 1.0 );
 
 wxColour wx_color = color.ToColour();
 
 // Open-code wxColour::GetAsString() because 3.0 doesn't handle rgba
 name.Printf( wxT("#%02X%02X%02X%02X" ),
 wx_color.Red(),
 wx_color.Green(),
 wx_color.Blue(),
 wx_color.Alpha() );
 }
 
 item->SetColor( name, sublayer_idx );
 NeedRIGHT();
 break;
 
 default:
 // Currently, skip this item if not defined, because the stackup def
 // is a moving target
 //Expecting( "type, thickness, material, epsilon_r, loss_tangent, color" );
 skipCurrent();
 }
 }
 }
 
 if( has_next_sublayer ) // Prepare reading the next sublayer description
 {
 sublayer_idx++;
 item->AddDielectricPrms( sublayer_idx );
 }
 }
 }
 
 if( token != T_RIGHT )
 {
 Expecting( ")" );
 }
 
 // Success:
 m_board->GetDesignSettings().m_HasStackup = true;
}
 
 
void PCB_IO_KICAD_SEXPR_PARSER::createOldLayerMapping( std::unordered_map< std::string, std::string >& aMap )
{
 // N.B. This mapping only includes Italian, Polish and French as they were the only languages
 // that mapped the layer names as of cc2022b1ac739aa673d2a0b7a2047638aa7a47b3 (kicad-i18n)
 // when the bug was fixed in KiCad source.
 
 // Italian
 aMap["Adesivo.Retro"] = "B.Adhes";
 aMap["Adesivo.Fronte"] = "F.Adhes";
 aMap["Pasta.Retro"] = "B.Paste";
 aMap["Pasta.Fronte"] = "F.Paste";
 aMap["Serigrafia.Retro"] = "B.SilkS";
 aMap["Serigrafia.Fronte"] = "F.SilkS";
 aMap["Maschera.Retro"] = "B.Mask";
 aMap["Maschera.Fronte"] = "F.Mask";
 aMap["Grafica"] = "Dwgs.User";
 aMap["Commenti"] = "Cmts.User";
 aMap["Eco1"] = "Eco1.User";
 aMap["Eco2"] = "Eco2.User";
 aMap["Contorno.scheda"] = "Edge.Cuts";
 
 // Polish
 aMap["Kleju_Dolna"] = "B.Adhes";
 aMap["Kleju_Gorna"] = "F.Adhes";
 aMap["Pasty_Dolna"] = "B.Paste";
 aMap["Pasty_Gorna"] = "F.Paste";
 aMap["Opisowa_Dolna"] = "B.SilkS";
 aMap["Opisowa_Gorna"] = "F.SilkS";
 aMap["Maski_Dolna"] = "B.Mask";
 aMap["Maski_Gorna"] = "F.Mask";
 aMap["Rysunkowa"] = "Dwgs.User";
 aMap["Komentarzy"] = "Cmts.User";
 aMap["ECO1"] = "Eco1.User";
 aMap["ECO2"] = "Eco2.User";
 aMap["Krawedziowa"] = "Edge.Cuts";
 
 // French
 aMap["Dessous.Adhes"] = "B.Adhes";
 aMap["Dessus.Adhes"] = "F.Adhes";
 aMap["Dessous.Pate"] = "B.Paste";
 aMap["Dessus.Pate"] = "F.Paste";
 aMap["Dessous.SilkS"] = "B.SilkS";
 aMap["Dessus.SilkS"] = "F.SilkS";
 aMap["Dessous.Masque"] = "B.Mask";
 aMap["Dessus.Masque"] = "F.Mask";
 aMap["Dessin.User"] = "Dwgs.User";
 aMap["Contours.Ci"] = "Edge.Cuts";
}
 
 
void PCB_IO_KICAD_SEXPR_PARSER::parseLayers()
{
 wxCHECK_RET( CurTok() == T_layers,
 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as layers." ) );
 
 T token;
 LSET visibleLayers;
 LSET enabledLayers;
 int copperLayerCount = 0;
 LAYER layer;
 bool anyHidden = false;
 
 std::unordered_map< std::string, std::string > v3_layer_names;
 std::vector<LAYER> cu;
 
 createOldLayerMapping( v3_layer_names );
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 parseLayer( &layer );
 
 if( layer.m_type == LT_UNDEFINED ) // it's a non-copper layer
 break;
 
 cu.push_back( layer ); // it's copper
 }
 
 // All Cu layers are parsed, but not the non-cu layers here.
 
 // The original *.kicad_pcb file format and the inverted
 // Cu stack format both have all the Cu layers first, so use this
 // trick to handle either. The layer number in the (layers ..)
 // s-expression element are ignored.
 if( cu.size() )
 {
 // Rework the layer numbers, which changed when the Cu stack
 // was flipped. So we instead use position in the list.
 cu[cu.size()-1].m_number = B_Cu;
 
 for( unsigned i=0; i < cu.size()-1; ++i )
 cu[i].m_number = i;
 
 for( std::vector<LAYER>::const_iterator it = cu.begin(); it<cu.end(); ++it )
 {
 enabledLayers.set( it->m_number );
 
 if( it->m_visible )
 visibleLayers.set( it->m_number );
 else
 anyHidden = true;
 
 m_board->SetLayerDescr( PCB_LAYER_ID( it->m_number ), *it );
 
 UTF8 name = it->m_name;
 
 m_layerIndices[ name ] = PCB_LAYER_ID( it->m_number );
 m_layerMasks[ name ] = LSET( PCB_LAYER_ID( it->m_number ) );
 }
 
 copperLayerCount = cu.size();
 }
 
 // process non-copper layers
 while( token != T_RIGHT )
 {
 LAYER_ID_MAP::const_iterator it = m_layerIndices.find( UTF8( layer.m_name ) );
 
 if( it == m_layerIndices.end() )
 {
 auto new_layer_it = v3_layer_names.find( layer.m_name.ToStdString() );
 
 if( new_layer_it != v3_layer_names.end() )
 it = m_layerIndices.find( new_layer_it->second );
 
 if( it == m_layerIndices.end() )
 {
 wxString error;
 error.Printf( _( "Layer '%s' in file '%s' at line %d is not in fixed layer hash." ),
 layer.m_name,
 CurSource(),
 CurLineNumber(),
 CurOffset() );
 
 THROW_IO_ERROR( error );
 }
 
 // If we are here, then we have found a translated layer name. Put it in the maps
 // so that items on this layer get the appropriate layer ID number.
 m_layerIndices[ UTF8( layer.m_name ) ] = it->second;
 m_layerMasks[ UTF8( layer.m_name ) ] = it->second;
 layer.m_name = it->first;
 }
 
 layer.m_number = it->second;
 enabledLayers.set( layer.m_number );
 
 if( layer.m_visible )
 visibleLayers.set( layer.m_number );
 else
 anyHidden = true;
 
 m_board->SetLayerDescr( it->second, layer );
 
 token = NextTok();
 
 if( token != T_LEFT )
 break;
 
 parseLayer( &layer );
 }
 
 // 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->SetEnabledLayers( enabledLayers );
 
 // Only set this if any layers were explicitly marked as hidden. Otherwise, we want to leave
 // this alone; default visibility will show everything
 if( anyHidden )
 m_board->m_LegacyVisibleLayers = visibleLayers;
}
 
 
template<class T, class M>
T PCB_IO_KICAD_SEXPR_PARSER::lookUpLayer( const M& aMap )
{
 // avoid constructing another std::string, use lexer's directly
 typename M::const_iterator it = aMap.find( curText );
 
 if( it == aMap.end() )
 {
 m_undefinedLayers.insert( curText );
 return Rescue;
 }
 
 // Some files may have saved items to the Rescue Layer due to an issue in v5
 if( it->second == Rescue )
 m_undefinedLayers.insert( curText );
 
 return it->second;
}
 
 
PCB_LAYER_ID PCB_IO_KICAD_SEXPR_PARSER::parseBoardItemLayer()
{
 wxCHECK_MSG( CurTok() == T_layer, UNDEFINED_LAYER,
 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as layer." ) );
 
 NextTok();
 
 PCB_LAYER_ID layerIndex = lookUpLayer<PCB_LAYER_ID>( m_layerIndices );
 
 // Handle closing ) in object parser.
 
 return layerIndex;
}
 
 
LSET PCB_IO_KICAD_SEXPR_PARSER::parseBoardItemLayersAsMask()
{
 wxCHECK_MSG( CurTok() == T_layers, LSET(),
 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as item layers." ) );
 
 LSET layerMask;
 
 for( T token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 LSET mask = lookUpLayer<LSET>( m_layerMasks );
 layerMask |= mask;
 }
 
 return layerMask;
}
 
 
void PCB_IO_KICAD_SEXPR_PARSER::parseSetup()
{
 wxCHECK_RET( CurTok() == T_setup,
 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as setup." ) );
 
 BOARD_DESIGN_SETTINGS& bds = m_board->GetDesignSettings();
 std::shared_ptr<NETCLASS>& defaultNetClass = bds.m_NetSettings->m_DefaultNetClass;
 ZONE_SETTINGS& zoneSettings = bds.GetDefaultZoneSettings();
 
 // Missing soldermask min width value means that the user has set the value to 0 and
 // not the default value (0.25mm)
 bds.m_SolderMaskMinWidth = 0;
 
 for( T token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 if( token != T_LEFT )
 Expecting( T_LEFT );
 
 token = NextTok();
 
 switch( token )
 {
 case T_stackup:
 parseBoardStackup();
 break;
 
 case T_last_trace_width: // not used now
 /* lastTraceWidth =*/ parseBoardUnits( T_last_trace_width );
 NeedRIGHT();
 break;
 
 case T_user_trace_width:
 {
 // Make room for the netclass value
 if( bds.m_TrackWidthList.empty() )
 bds.m_TrackWidthList.emplace_back( 0 );
 
 int trackWidth = parseBoardUnits( T_user_trace_width );
 
 if( !m_appendToExisting || !alg::contains( bds.m_TrackWidthList, trackWidth ) )
 bds.m_TrackWidthList.push_back( trackWidth );
 
 m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 }
 
 case T_trace_clearance:
 defaultNetClass->SetClearance( parseBoardUnits( T_trace_clearance ) );
 m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 
 case T_zone_clearance:
 zoneSettings.m_ZoneClearance = parseBoardUnits( T_zone_clearance );
 m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 
 case T_zone_45_only: // legacy setting
 /* zoneSettings.m_Zone_45_Only = */ parseBool();
 m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 
 case T_clearance_min:
 bds.m_MinClearance = parseBoardUnits( T_clearance_min );
 m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 
 case T_trace_min:
 bds.m_TrackMinWidth = parseBoardUnits( T_trace_min );
 m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 
 case T_via_size:
 defaultNetClass->SetViaDiameter( parseBoardUnits( T_via_size ) );
 m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 
 case T_via_drill:
 defaultNetClass->SetViaDrill( parseBoardUnits( T_via_drill ) );
 m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 
 case T_via_min_annulus:
 bds.m_ViasMinAnnularWidth = parseBoardUnits( T_via_min_annulus );
 m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 
 case T_via_min_size:
 bds.m_ViasMinSize = parseBoardUnits( T_via_min_size );
 m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 
 case T_through_hole_min:
 bds.m_MinThroughDrill = parseBoardUnits( T_through_hole_min );
 m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 
 // Legacy token for T_through_hole_min
 case T_via_min_drill:
 bds.m_MinThroughDrill = parseBoardUnits( T_via_min_drill );
 m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 
 case T_hole_to_hole_min:
 bds.m_HoleToHoleMin = parseBoardUnits( T_hole_to_hole_min );
 m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 
 case T_user_via:
 {
 int viaSize = parseBoardUnits( "user via size" );
 int viaDrill = parseBoardUnits( "user via drill" );
 VIA_DIMENSION via( viaSize, viaDrill );
 
 // Make room for the netclass value
 if( bds.m_ViasDimensionsList.empty() )
 bds.m_ViasDimensionsList.emplace_back( VIA_DIMENSION( 0, 0 ) );
 
 if( !m_appendToExisting || !alg::contains( bds.m_ViasDimensionsList, via ) )
 bds.m_ViasDimensionsList.emplace_back( via );
 
 m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 }
 
 case T_uvia_size:
 defaultNetClass->SetuViaDiameter( parseBoardUnits( T_uvia_size ) );
 m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 
 case T_uvia_drill:
 defaultNetClass->SetuViaDrill( parseBoardUnits( T_uvia_drill ) );
 m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 
 case T_uvias_allowed:
 parseBool();
 m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 
 case T_blind_buried_vias_allowed:
 parseBool();
 m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 
 case T_uvia_min_size:
 bds.m_MicroViasMinSize = parseBoardUnits( T_uvia_min_size );
 m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 
 case T_uvia_min_drill:
 bds.m_MicroViasMinDrill = parseBoardUnits( T_uvia_min_drill );
 m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 
 case T_user_diff_pair:
 {
 int width = parseBoardUnits( "user diff-pair width" );
 int gap = parseBoardUnits( "user diff-pair gap" );
 int viaGap = parseBoardUnits( "user diff-pair via gap" );
 DIFF_PAIR_DIMENSION diffPair( width, gap, viaGap );
 
 if( !m_appendToExisting || !alg::contains( bds.m_DiffPairDimensionsList, diffPair ) )
 bds.m_DiffPairDimensionsList.emplace_back( diffPair );
 
 m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 }
 
 case T_segment_width: // note: legacy (pre-6.0) token
 bds.m_LineThickness[ LAYER_CLASS_COPPER ] = parseBoardUnits( T_segment_width );
 m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 
 case T_edge_width: // note: legacy (pre-6.0) token
 bds.m_LineThickness[ LAYER_CLASS_EDGES ] = parseBoardUnits( T_edge_width );
 m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 
 case T_mod_edge_width: // note: legacy (pre-6.0) token
 bds.m_LineThickness[ LAYER_CLASS_SILK ] = parseBoardUnits( T_mod_edge_width );
 m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 
 case T_pcb_text_width: // note: legacy (pre-6.0) token
 bds.m_TextThickness[ LAYER_CLASS_COPPER ] = parseBoardUnits( T_pcb_text_width );
 m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 
 case T_mod_text_width: // note: legacy (pre-6.0) token
 bds.m_TextThickness[ LAYER_CLASS_SILK ] = parseBoardUnits( T_mod_text_width );
 m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 
 case T_pcb_text_size: // note: legacy (pre-6.0) token
 bds.m_TextSize[ LAYER_CLASS_COPPER ].x = parseBoardUnits( "pcb text width" );
 bds.m_TextSize[ LAYER_CLASS_COPPER ].y = parseBoardUnits( "pcb text height" );
 m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 
 case T_mod_text_size: // note: legacy (pre-6.0) token
 bds.m_TextSize[ LAYER_CLASS_SILK ].x = parseBoardUnits( "footprint text width" );
 bds.m_TextSize[ LAYER_CLASS_SILK ].y = parseBoardUnits( "footprint text height" );
 m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 
 case T_defaults:
 parseDefaults( bds );
 m_board->m_LegacyDesignSettingsLoaded = true;
 break;
 
 case T_pad_size:
 {
 VECTOR2I sz;
 sz.x = parseBoardUnits( "master pad width" );
 sz.y = parseBoardUnits( "master pad height" );
 bds.m_Pad_Master->SetSize( sz );
 m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 }
 
 case T_pad_drill:
 {
 int drillSize = parseBoardUnits( T_pad_drill );
 bds.m_Pad_Master->SetDrillSize( VECTOR2I( drillSize, drillSize ) );
 m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 }
 
 case T_pad_to_mask_clearance:
 bds.m_SolderMaskExpansion = parseBoardUnits( T_pad_to_mask_clearance );
 NeedRIGHT();
 break;
 
 case T_solder_mask_min_width:
 bds.m_SolderMaskMinWidth = parseBoardUnits( T_solder_mask_min_width );
 NeedRIGHT();
 break;
 
 case T_pad_to_paste_clearance:
 bds.m_SolderPasteMargin = parseBoardUnits( T_pad_to_paste_clearance );
 NeedRIGHT();
 break;
 
 case T_pad_to_paste_clearance_ratio:
 bds.m_SolderPasteMarginRatio = parseDouble( T_pad_to_paste_clearance_ratio );
 NeedRIGHT();
 break;
 
 case T_allow_soldermask_bridges_in_footprints:
 bds.m_AllowSoldermaskBridgesInFPs = parseBool();
 NeedRIGHT();
 break;
 
 case T_aux_axis_origin:
 {
 int x = parseBoardUnits( "auxiliary origin X" );
 int y = parseBoardUnits( "auxiliary origin Y" );
 bds.SetAuxOrigin( VECTOR2I( x, y ) );
 
 // Aux origin still stored in board for the moment
 //m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 }
 
 case T_grid_origin:
 {
 int x = parseBoardUnits( "grid origin X" );
 int y = parseBoardUnits( "grid origin Y" );
 bds.SetGridOrigin( VECTOR2I( x, y ) );
 // Grid origin still stored in board for the moment
 //m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 }
 
 // Stored in board prior to 6.0
 case T_visible_elements:
 {
 // Make sure to start with DefaultVisible so all new layers are set
 m_board->m_LegacyVisibleItems = GAL_SET::DefaultVisible();
 
 int visible = parseHex() | MIN_VISIBILITY_MASK;
 
 for( size_t i = 0; i < sizeof( int ) * CHAR_BIT; i++ )
 m_board->m_LegacyVisibleItems.set( i, visible & ( 1u << i ) );
 
 NeedRIGHT();
 break;
 }
 
 case T_max_error:
 bds.m_MaxError = parseBoardUnits( T_max_error );
 m_board->m_LegacyDesignSettingsLoaded = true;
 NeedRIGHT();
 break;
 
 case T_filled_areas_thickness:
 // Ignore this value, it is not used anymore
 parseBool();
 NeedRIGHT();
 break;
 
 case T_pcbplotparams:
 {
 PCB_PLOT_PARAMS plotParams;
 PCB_PLOT_PARAMS_PARSER parser( reader );
 // parser must share the same current line as our current PCB parser
 // synchronize it.
 parser.SyncLineReaderWith( *this );
 
 plotParams.Parse( &parser );
 SyncLineReaderWith( parser );
 
 m_board->SetPlotOptions( plotParams );
 break;
 }
 
 default:
 Unexpected( CurText() );
 }
 }
 
 // Set up a default stackup in case the file doesn't define one, and now we know
 // the enabled layers
 if( ! m_board->GetDesignSettings().m_HasStackup )
 {
 BOARD_STACKUP& stackup = bds.GetStackupDescriptor();
 stackup.RemoveAll();
 stackup.BuildDefaultStackupList( &bds, m_board->GetCopperLayerCount() );
 }
}
 
 
void PCB_IO_KICAD_SEXPR_PARSER::parseDefaults( BOARD_DESIGN_SETTINGS& designSettings )
{
 T token;
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 if( token != T_LEFT )
 Expecting( T_LEFT );
 
 token = NextTok();
 
 switch( token )
 {
 case T_edge_clearance:
 designSettings.m_CopperEdgeClearance = parseBoardUnits( T_edge_clearance );
 m_board->m_LegacyCopperEdgeClearanceLoaded = true;
 NeedRIGHT();
 break;
 
 case T_copper_line_width:
 designSettings.m_LineThickness[ LAYER_CLASS_COPPER ] = parseBoardUnits( token );
 NeedRIGHT();
 break;
 
 case T_copper_text_dims:
 parseDefaultTextDims( designSettings, LAYER_CLASS_COPPER );
 break;
 
 case T_courtyard_line_width:
 designSettings.m_LineThickness[ LAYER_CLASS_COURTYARD ] = parseBoardUnits( token );
 NeedRIGHT();
 break;
 
 case T_edge_cuts_line_width:
 designSettings.m_LineThickness[ LAYER_CLASS_EDGES ] = parseBoardUnits( token );
 NeedRIGHT();
 break;
 
 case T_silk_line_width:
 designSettings.m_LineThickness[ LAYER_CLASS_SILK ] = parseBoardUnits( token );
 NeedRIGHT();
 break;
 
 case T_silk_text_dims:
 parseDefaultTextDims( designSettings, LAYER_CLASS_SILK );
 break;
 
 case T_fab_layers_line_width:
 designSettings.m_LineThickness[ LAYER_CLASS_FAB ] = parseBoardUnits( token );
 NeedRIGHT();
 break;
 
 case T_fab_layers_text_dims:
 parseDefaultTextDims( designSettings, LAYER_CLASS_FAB );
 break;
 
 case T_other_layers_line_width:
 designSettings.m_LineThickness[ LAYER_CLASS_OTHERS ] = parseBoardUnits( token );
 NeedRIGHT();
 break;
 
 case T_other_layers_text_dims:
 parseDefaultTextDims( designSettings, LAYER_CLASS_OTHERS );
 break;
 
 case T_dimension_units:
 designSettings.m_DimensionUnitsMode =
 static_cast<DIM_UNITS_MODE>( parseInt( "dimension units" ) );
 NeedRIGHT();
 break;
 
 case T_dimension_precision:
 designSettings.m_DimensionPrecision =
 static_cast<DIM_PRECISION>( parseInt( "dimension precision" ) );
 NeedRIGHT();
 break;
 
 default:
 Unexpected( CurText() );
 }
 }
}
 
 
void PCB_IO_KICAD_SEXPR_PARSER::parseDefaultTextDims( BOARD_DESIGN_SETTINGS& aSettings, int aLayer )
{
 T token;
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 if( token == T_LEFT )
 token = NextTok();
 
 switch( token )
 {
 case T_size:
 aSettings.m_TextSize[ aLayer ].x = parseBoardUnits( "default text size X" );
 aSettings.m_TextSize[ aLayer ].y = parseBoardUnits( "default text size Y" );
 NeedRIGHT();
 break;
 
 case T_thickness:
 aSettings.m_TextThickness[ aLayer ] = parseBoardUnits( "default text width" );
 NeedRIGHT();
 break;
 
 case T_italic:
 aSettings.m_TextItalic[ aLayer ] = true;
 break;
 
 case T_keep_upright:
 aSettings.m_TextUpright[ aLayer ] = true;
 break;
 
 default:
 Expecting( "size, thickness, italic or keep_upright" );
 }
 }
}
 
 
void PCB_IO_KICAD_SEXPR_PARSER::parseNETINFO_ITEM()
{
 wxCHECK_RET( CurTok() == T_net,
 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as net." ) );
 
 int netCode = parseInt( "net number" );
 
 NeedSYMBOLorNUMBER();
 wxString name = FromUTF8();
 
 // Convert overbar syntax from `~...~` to `~{...}`. These were left out of the first merge
 // so the version is a bit later.
 if( m_requiredVersion < 20210606 )
 name = ConvertToNewOverbarNotation( name );
 
 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( netCode > NETINFO_LIST::UNCONNECTED || !m_board->FindNet( NETINFO_LIST::UNCONNECTED ) )
 {
 NETINFO_ITEM* net = new NETINFO_ITEM( m_board, name, netCode );
 m_board->Add( net, ADD_MODE::INSERT, true );
 
 // Store the new code mapping
 pushValueIntoMap( netCode, net->GetNetCode() );
 }
}
 
 
void PCB_IO_KICAD_SEXPR_PARSER::parseNETCLASS()
{
 wxCHECK_RET( CurTok() == T_net_class,
 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as net class." ) );
 
 T token;
 
 std::shared_ptr<NETCLASS> nc = std::make_shared<NETCLASS>( wxEmptyString );
 
 // Read netclass name (can be a name or just a number like track width)
 NeedSYMBOLorNUMBER();
 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_diff_pair_width:
 nc->SetDiffPairWidth( parseBoardUnits( T_diff_pair_width ) );
 break;
 
 case T_diff_pair_gap:
 nc->SetDiffPairGap( parseBoardUnits( T_diff_pair_gap ) );
 break;
 
 case T_add_net:
 {
 NeedSYMBOLorNUMBER();
 
 wxString netName = FromUTF8();
 
 // Convert overbar syntax from `~...~` to `~{...}`. These were left out of the
 // first merge so the version is a bit later.
 if( m_requiredVersion < 20210606 )
 netName = ConvertToNewOverbarNotation( FromUTF8() );
 
 m_board->GetDesignSettings().m_NetSettings->m_NetClassPatternAssignments.push_back(
 {
 std::make_unique<EDA_COMBINED_MATCHER>( netName, CTX_NETCLASS ),
 nc->GetName()
 } );
 
 break;
 }
 
 default:
 Expecting( "clearance, trace_width, via_dia, via_drill, uvia_dia, uvia_drill, "
 "diff_pair_width, diff_pair_gap or add_net" );
 }
 
 NeedRIGHT();
 }
 
 std::shared_ptr<NET_SETTINGS>& netSettings = m_board->GetDesignSettings().m_NetSettings;
 
 if( netSettings->m_NetClasses.count( nc->GetName() ) )
 {
 // Must have been a name conflict, this is a bad board file.
 // User may have done a hand edit to the file.
 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 );
 }
 else if( nc->GetName() == netSettings->m_DefaultNetClass->GetName() )
 {
 netSettings->m_DefaultNetClass = nc;
 }
 else
 {
 netSettings->m_NetClasses[ nc->GetName() ] = nc;
 }
}
 
 
PCB_SHAPE* PCB_IO_KICAD_SEXPR_PARSER::parsePCB_SHAPE( BOARD_ITEM* aParent )
{
 wxCHECK_MSG( CurTok() == T_fp_arc || CurTok() == T_fp_circle || CurTok() == T_fp_curve ||
 CurTok() == T_fp_rect || CurTok() == T_fp_line || CurTok() == T_fp_poly ||
 CurTok() == T_gr_arc || CurTok() == T_gr_circle || CurTok() == T_gr_curve ||
 CurTok() == T_gr_rect || CurTok() == T_gr_bbox || CurTok() == T_gr_line ||
 CurTok() == T_gr_poly || CurTok() == T_gr_vector, nullptr,
 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as PCB_SHAPE." ) );
 
 T token;
 VECTOR2I pt;
 STROKE_PARAMS stroke( 0, LINE_STYLE::SOLID );
 std::unique_ptr<PCB_SHAPE> shape = std::make_unique<PCB_SHAPE>( aParent );
 
 switch( CurTok() )
 {
 case T_gr_arc:
 case T_fp_arc:
 shape->SetShape( SHAPE_T::ARC );
 token = NextTok();
 
 if( token == T_locked )
 {
 shape->SetLocked( true );
 token = NextTok();
 }
 
 if( token != T_LEFT )
 Expecting( T_LEFT );
 
 token = NextTok();
 
 if( m_requiredVersion <= LEGACY_ARC_FORMATTING )
 {
 // In legacy files the start keyword actually gives the arc center...
 if( token != T_start )
 Expecting( T_start );
 
 pt.x = parseBoardUnits( "X coordinate" );
 pt.y = parseBoardUnits( "Y coordinate" );
 shape->SetCenter( pt );
 NeedRIGHT();
 NeedLEFT();
 token = NextTok();
 
 // ... and the end keyword gives the start point of the arc
 if( token != T_end )
 Expecting( T_end );
 
 pt.x = parseBoardUnits( "X coordinate" );
 pt.y = parseBoardUnits( "Y coordinate" );
 shape->SetStart( pt );
 NeedRIGHT();
 NeedLEFT();
 token = NextTok();
 
 if( token != T_angle )
 Expecting( T_angle );
 
 shape->SetArcAngleAndEnd( EDA_ANGLE( parseDouble( "arc angle" ), DEGREES_T ), true );
 NeedRIGHT();
 }
 else
 {
 VECTOR2I arc_start, arc_mid, arc_end;
 
 if( token != T_start )
 Expecting( T_start );
 
 arc_start.x = parseBoardUnits( "X coordinate" );
 arc_start.y = parseBoardUnits( "Y coordinate" );
 NeedRIGHT();
 NeedLEFT();
 token = NextTok();
 
 if( token != T_mid )
 Expecting( T_mid );
 
 arc_mid.x = parseBoardUnits( "X coordinate" );
 arc_mid.y = parseBoardUnits( "Y coordinate" );
 NeedRIGHT();
 NeedLEFT();
 token = NextTok();
 
 if( token != T_end )
 Expecting( T_end );
 
 arc_end.x = parseBoardUnits( "X coordinate" );
 arc_end.y = parseBoardUnits( "Y coordinate" );
 NeedRIGHT();
 
 shape->SetArcGeometry( arc_start, arc_mid, arc_end );
 }
 
 break;
 
 case T_gr_circle:
 case T_fp_circle:
 shape->SetShape( SHAPE_T::CIRCLE );
 token = NextTok();
 
 if( token == T_locked )
 {
 shape->SetLocked( true );
 token = NextTok();
 }
 
 if( token != T_LEFT )
 Expecting( T_LEFT );
 
 token = NextTok();
 
 if( token != T_center )
 Expecting( T_center );
 
 pt.x = parseBoardUnits( "X coordinate" );
 pt.y = parseBoardUnits( "Y coordinate" );
 shape->SetStart( pt );
 NeedRIGHT();
 NeedLEFT();
 
 token = NextTok();
 
 if( token != T_end )
 Expecting( T_end );
 
 pt.x = parseBoardUnits( "X coordinate" );
 pt.y = parseBoardUnits( "Y coordinate" );
 shape->SetEnd( pt );
 NeedRIGHT();
 break;
 
 case T_gr_curve:
 case T_fp_curve:
 shape->SetShape( SHAPE_T::BEZIER );
 token = NextTok();
 
 if( token == T_locked )
 {
 shape->SetLocked( true );
 token = NextTok();
 }
 
 if( token != T_LEFT )
 Expecting( T_LEFT );
 
 token = NextTok();
 
 if( token != T_pts )
 Expecting( T_pts );
 
 shape->SetStart( parseXY() );
 shape->SetBezierC1( parseXY());
 shape->SetBezierC2( parseXY());
 shape->SetEnd( parseXY() );
 NeedRIGHT();
 break;
 
 case T_gr_bbox:
 case T_gr_rect:
 case T_fp_rect:
 shape->SetShape( SHAPE_T::RECTANGLE );
 token = NextTok();
 
 if( token == T_locked )
 {
 shape->SetLocked( true );
 token = NextTok();
 }
 
 if( token != T_LEFT )
 Expecting( T_LEFT );
 
 token = NextTok();
 
 if( token != T_start )
 Expecting( T_start );
 
 pt.x = parseBoardUnits( "X coordinate" );
 pt.y = parseBoardUnits( "Y coordinate" );
 shape->SetStart( pt );
 NeedRIGHT();
 NeedLEFT();
 token = NextTok();
 
 if( token != T_end )
 Expecting( T_end );
 
 pt.x = parseBoardUnits( "X coordinate" );
 pt.y = parseBoardUnits( "Y coordinate" );
 shape->SetEnd( pt );
 
 if( aParent && aParent->Type() == PCB_FOOTPRINT_T )
 {
 // Footprint shapes are stored in board-relative coordinates, but we want the
 // normalization to remain in footprint-relative coordinates.
 }
 else
 {
 shape->Normalize();
 }
 
 NeedRIGHT();
 break;
 
 case T_gr_vector:
 case T_gr_line:
 case T_fp_line:
 // Default PCB_SHAPE type is S_SEGMENT.
 token = NextTok();
 
 if( token == T_locked )
 {
 shape->SetLocked( true );
 token = NextTok();
 }
 
 if( token != T_LEFT )
 Expecting( T_LEFT );
 
 token = NextTok();
 
 if( token != T_start )
 Expecting( T_start );
 
 pt.x = parseBoardUnits( "X coordinate" );
 pt.y = parseBoardUnits( "Y coordinate" );
 shape->SetStart( pt );
 NeedRIGHT();
 NeedLEFT();
 token = NextTok();
 
 if( token != T_end )
 Expecting( T_end );
 
 pt.x = parseBoardUnits( "X coordinate" );
 pt.y = parseBoardUnits( "Y coordinate" );
 shape->SetEnd( pt );
 NeedRIGHT();
 break;
 
 case T_gr_poly:
 case T_fp_poly:
 {
 shape->SetShape( SHAPE_T::POLY );
 shape->SetPolyPoints( {} );
 
 SHAPE_LINE_CHAIN& outline = shape->GetPolyShape().Outline( 0 );
 
 token = NextTok();
 
 if( token == T_locked )
 {
 shape->SetLocked( true );
 token = NextTok();
 }
 
 if( token != T_LEFT )
 Expecting( T_LEFT );
 
 token = NextTok();
 
 if( token != T_pts )
 Expecting( T_pts );
 
 while( (token = NextTok() ) != T_RIGHT )
 parseOutlinePoints( outline );
 
 break;
 }
 
 default:
 Expecting( "gr_arc, gr_circle, gr_curve, gr_line, gr_poly, gr_rect or gr_bbox" );
 }
 
 bool foundFill = false;
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 if( token != T_LEFT )
 Expecting( T_LEFT );
 
 token = NextTok();
 
 switch( token )
 {
 case T_angle: // legacy token; ignore value
 parseDouble( "arc angle" );
 NeedRIGHT();
 break;
 
 case T_layer:
 shape->SetLayer( parseBoardItemLayer() );
 NeedRIGHT();
 break;
 
 case T_width: // legacy token
 stroke.SetWidth( parseBoardUnits( T_width ) );
 NeedRIGHT();
 break;
 
 case T_stroke:
 {
 STROKE_PARAMS_PARSER strokeParser( reader, pcbIUScale.IU_PER_MM );
 strokeParser.SyncLineReaderWith( *this );
 
 strokeParser.ParseStroke( stroke );
 SyncLineReaderWith( strokeParser );
 break;
 }
 
 case T_tstamp:
 case T_uuid:
 NextTok();
 const_cast<KIID&>( shape->m_Uuid ) = CurStrToKIID();
 NeedRIGHT();
 break;
 
 case T_fill:
 foundFill = true;
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 if( token == T_LEFT )
 token = NextTok();
 
 switch( token )
 {
 // T_yes was used to indicate filling when first introduced,
 // so treat it like a solid fill since that was the only fill available
 case T_yes:
 case T_solid:
 shape->SetFilled( true );
 break;
 
 case T_none:
 case T_no:
 shape->SetFilled( false );
 break;
 
 default:
 Expecting( "yes, no, solid, none" );
 }
 }
 
 break;
 
 // We continue to parse the status field but it is no longer written
 case T_status:
 parseHex();
 NeedRIGHT();
 break;
 
 // Handle (locked) from 5.99 development, and (locked yes) from modern times
 case T_locked:
 {
 bool locked = parseMaybeAbsentBool( true );
 shape->SetLocked( locked );
 break;
 }
 
 case T_net:
 if( !shape->SetNetCode( getNetCode( parseInt( "net number" ) ), /* aNoAssert */ true ) )
 {
 wxLogError( _( "Invalid net ID in\nfile: '%s'\nline: %d\noffset: %d." ),
 CurSource(), CurLineNumber(), CurOffset() );
 }
 NeedRIGHT();
 break;
 
 default:
 Expecting( "layer, width, fill, tstamp, uuid, locked, net or status" );
 }
 }
 
 if( !foundFill )
 {
 // Legacy versions didn't have a filled flag but allowed some shapes to indicate they
 // should be filled by specifying a 0 stroke-width.
 if( stroke.GetWidth() == 0
 && ( shape->GetShape() == SHAPE_T::RECTANGLE || shape->GetShape() == SHAPE_T::CIRCLE ) )
 {
 shape->SetFilled( true );
 }
 else if( shape->GetShape() == SHAPE_T::POLY && shape->GetLayer() != Edge_Cuts )
 {
 // Polygons on non-Edge_Cuts layers were always filled.
 shape->SetFilled( true );
 }
 }
 
 // Only filled shapes may have a zero line-width. This is not permitted in KiCad but some
 // external tools can generate invalid files.
 if( stroke.GetWidth() <= 0 && !shape->IsFilled() )
 {
 stroke.SetWidth( pcbIUScale.mmToIU( DEFAULT_LINE_WIDTH ) );
 }
 
 shape->SetStroke( stroke );
 
 if( FOOTPRINT* parentFP = dynamic_cast<FOOTPRINT*>( aParent ) )
 {
 shape->Rotate( { 0, 0 }, parentFP->GetOrientation() );
 shape->Move( parentFP->GetPosition() );
 }
 
 return shape.release();
}
 
 
PCB_REFERENCE_IMAGE* PCB_IO_KICAD_SEXPR_PARSER::parsePCB_REFERENCE_IMAGE( BOARD_ITEM* aParent )
{
 wxCHECK_MSG( CurTok() == T_image, nullptr,
 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as a reference image." ) );
 
 T token;
 std::unique_ptr<PCB_REFERENCE_IMAGE> bitmap = std::make_unique<PCB_REFERENCE_IMAGE>( aParent );
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 if( token != T_LEFT )
 Expecting( T_LEFT );
 
 token = NextTok();
 
 switch( token )
 {
 case T_at:
 {
 VECTOR2I pos;
 pos.x = parseBoardUnits( "X coordinate" );
 pos.y = parseBoardUnits( "Y coordinate" );
 bitmap->SetPosition( pos );
 NeedRIGHT();
 break;
 }
 
 case T_layer:
 bitmap->SetLayer( parseBoardItemLayer() );
 NeedRIGHT();
 break;
 
 case T_scale:
 bitmap->SetImageScale( parseDouble( "image scale factor" ) );
 
 if( !std::isnormal( bitmap->GetImage()->GetScale() ) )
 bitmap->SetImageScale( 1.0 );
 
 NeedRIGHT();
 break;
 
 case T_data:
 {
 token = NextTok();
 
 wxString data;
 
 // Reserve 512K because most image files are going to be larger than the default
 // 1K that wxString reserves.
 data.reserve( 1 << 19 );
 
 while( token != T_RIGHT )
 {
 if( !IsSymbol( token ) )
 Expecting( "base64 image data" );
 
 data += FromUTF8();
 token = NextTok();
 }
 
 wxMemoryBuffer buffer = wxBase64Decode( data );
 
 if( !bitmap->ReadImageFile( buffer ) )
 THROW_IO_ERROR( _( "Failed to read image data." ) );
 
 break;
 }
 
 case T_locked:
 {
 // This has only ever been (locked yes) format
 const bool locked = parseBool();
 bitmap->SetLocked( locked );
 
 NeedRIGHT();
 break;
 }
 
 case T_uuid:
 {
 NextTok();
 const_cast<KIID&>( bitmap->m_Uuid ) = CurStrToKIID();
 NeedRIGHT();
 break;
 }
 
 default:
 Expecting( "at, layer, scale, data, locked or uuid" );
 }
 }
 
 return bitmap.release();
}
 
 
PCB_TEXT* PCB_IO_KICAD_SEXPR_PARSER::parsePCB_TEXT( BOARD_ITEM* aParent )
{
 wxCHECK_MSG( CurTok() == T_gr_text || CurTok() == T_fp_text, nullptr,
 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as PCB_TEXT." ) );
 
 FOOTPRINT* parentFP = dynamic_cast<FOOTPRINT*>( aParent );
 std::unique_ptr<PCB_TEXT> text;
 
 T token = NextTok();
 
 if( parentFP )
 {
 switch( token )
 {
 case T_reference:
 text = std::make_unique<PCB_FIELD>( parentFP, REFERENCE_FIELD );
 break;
 
 case T_value:
 text = std::make_unique<PCB_FIELD>( parentFP, VALUE_FIELD );
 break;
 
 case T_user:
 text = std::make_unique<PCB_TEXT>( parentFP );
 break;
 
 default:
 THROW_IO_ERROR( wxString::Format( _( "Cannot handle footprint text type %s" ),
 FromUTF8() ) );
 }
 
 token = NextTok();
 }
 else
 {
 text = std::make_unique<PCB_TEXT>( aParent );
 }
 
 // Legacy bare locked token
 if( token == T_locked )
 {
 text->SetLocked( true );
 token = NextTok();
 }
 
 if( !IsSymbol( token ) && (int) token != DSN_NUMBER )
 Expecting( "text value" );
 
 wxString value = FromUTF8();
 value.Replace( wxT( "%V" ), wxT( "${VALUE}" ) );
 value.Replace( wxT( "%R" ), wxT( "${REFERENCE}" ) );
 text->SetText( value );
 
 NeedLEFT();
 
 parsePCB_TEXT_effects( text.get() );
 
 return text.release();
}
 
 
void PCB_IO_KICAD_SEXPR_PARSER::parsePCB_TEXT_effects( PCB_TEXT* aText )
{
 FOOTPRINT* parentFP = dynamic_cast<FOOTPRINT*>( aText->GetParent() );
 bool hasAngle = false; // Old files do not have a angle specified.
 // in this case it is 0 expected to be 0
 bool hasPos = false;
 
 // By default, texts in footprints have a locked rotation (i.e. rot = -90 ... 90 deg)
 if( parentFP )
 aText->SetKeepUpright( true );
 
 for( T token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 if( token == T_LEFT )
 token = NextTok();
 
 switch( token )
 {
 case T_at:
 {
 VECTOR2I pt;
 
 hasPos = true;
 pt.x = parseBoardUnits( "X coordinate" );
 pt.y = parseBoardUnits( "Y coordinate" );
 aText->SetTextPos( pt );
 token = NextTok();
 
 if( CurTok() == T_NUMBER )
 {
 aText->SetTextAngle( EDA_ANGLE( parseDouble(), DEGREES_T ) );
 hasAngle = true;
 token = NextTok();
 }
 
 // Legacy location of this token; presence implies true
 if( parentFP && CurTok() == T_unlocked )
 {
 aText->SetKeepUpright( false );
 token = NextTok();
 }
 
 if( (int) token != DSN_RIGHT )
 Expecting( DSN_RIGHT );
 
 break;
 }
 
 case T_layer:
 aText->SetLayer( parseBoardItemLayer() );
 
 token = NextTok();
 
 if( token == T_knockout )
 {
 aText->SetIsKnockout( true );
 token = NextTok();
 }
 
 if( (int) token != DSN_RIGHT )
 Expecting( DSN_RIGHT );
 
 break;
 
 case T_tstamp:
 case T_uuid:
 NextTok();
 const_cast<KIID&>( aText->m_Uuid ) = CurStrToKIID();
 NeedRIGHT();
 break;
 
 case T_hide:
 {
 // In older files, the hide token appears bare, and indicates hide==true.
 // In newer files, it will be an explicit bool in a list like (hide yes)
 bool hide = parseMaybeAbsentBool( true );
 
 if( parentFP )
 aText->SetVisible( !hide );
 else
 Expecting( "layer, effects, locked, render_cache, uuid or tstamp" );
 
 break;
 }
 
 case T_locked:
 // Newer list-enclosed locked
 aText->SetLocked( parseBool() );
 NeedRIGHT();
 break;
 
 // Confusingly, "unlocked" is not the opposite of "locked", but refers to "keep upright"
 case T_unlocked:
 if( parentFP )
 aText->SetKeepUpright( !parseBool() );
 else
 Expecting( "layer, effects, locked, render_cache or tstamp" );
 
 NeedRIGHT();
 break;
 
 case T_effects:
 parseEDA_TEXT( static_cast<EDA_TEXT*>( aText ) );
 break;
 
 case T_render_cache:
 parseRenderCache( static_cast<EDA_TEXT*>( aText ) );
 break;
 
 default:
 if( parentFP )
 Expecting( "layer, hide, effects, locked, render_cache or tstamp" );
 else
 Expecting( "layer, effects, locked, render_cache or tstamp" );
 }
 }
 
 // If there is no orientation defined, then it is the default value of 0 degrees.
 if( !hasAngle )
 aText->SetTextAngle( ANGLE_0 );
 
 if( parentFP )
 {
 // make PCB_TEXT rotation relative to the parent footprint.
 // It was read as absolute rotation from file
 aText->SetTextAngle( aText->GetTextAngle() - parentFP->GetOrientation() );
 
 // Move and rotate the text to its board coordinates
 aText->Rotate( { 0, 0 }, parentFP->GetOrientation() );
 
 // Only move offset from parent position if we read a position from the file.
 // These positions are relative to the parent footprint. If we don't have a position
 // then the text defaults to the parent position and moving again will double it.
 if (hasPos)
 aText->Move( parentFP->GetPosition() );
 }
}
 
 
PCB_TEXTBOX* PCB_IO_KICAD_SEXPR_PARSER::parsePCB_TEXTBOX( BOARD_ITEM* aParent )
{
 wxCHECK_MSG( CurTok() == T_gr_text_box || CurTok() == T_fp_text_box, nullptr,
 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as PCB_TEXTBOX." ) );
 
 std::unique_ptr<PCB_TEXTBOX> textbox = std::make_unique<PCB_TEXTBOX>( aParent );
 
 parseTextBoxContent( textbox.get() );
 
 return textbox.release();
}
 
 
PCB_TABLECELL* PCB_IO_KICAD_SEXPR_PARSER::parsePCB_TABLECELL( BOARD_ITEM* aParent )
{
 wxCHECK_MSG( CurTok() == T_table_cell, nullptr,
 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as a table cell." ) );
 
 std::unique_ptr<PCB_TABLECELL> cell = std::make_unique<PCB_TABLECELL>( aParent );
 
 parseTextBoxContent( cell.get() );
 
 return cell.release();
}
 
 
void PCB_IO_KICAD_SEXPR_PARSER::parseTextBoxContent( PCB_TEXTBOX* aTextBox )
{
 int left;
 int top;
 int right;
 int bottom;
 STROKE_PARAMS stroke( -1, LINE_STYLE::SOLID );
 bool foundMargins = false;
 
 T token = NextTok();
 
 // Legacy locked
 if( token == T_locked )
 {
 aTextBox->SetLocked( true );
 token = NextTok();
 }
 
 if( !IsSymbol( token ) && (int) token != DSN_NUMBER )
 Expecting( "text value" );
 
 aTextBox->SetText( FromUTF8() );
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 if( token != T_LEFT )
 Expecting( T_LEFT );
 
 token = NextTok();
 
 switch( token )
 {
 case T_locked:
 aTextBox->SetLocked( parseMaybeAbsentBool( true ) );
 break;
 
 case T_start:
 {
 int x = parseBoardUnits( "X coordinate" );
 int y = parseBoardUnits( "Y coordinate" );
 aTextBox->SetStart( VECTOR2I( x, y ) );
 NeedRIGHT();
 
 NeedLEFT();
 token = NextTok();
 
 if( token != T_end )
 Expecting( T_end );
 
 x = parseBoardUnits( "X coordinate" );
 y = parseBoardUnits( "Y coordinate" );
 aTextBox->SetEnd( VECTOR2I( x, y ) );
 NeedRIGHT();
 break;
 }
 
 case T_pts:
 {
 aTextBox->SetShape( SHAPE_T::POLY );
 aTextBox->GetPolyShape().RemoveAllContours();
 aTextBox->GetPolyShape().NewOutline();
 
 while( (token = NextTok() ) != T_RIGHT )
 parseOutlinePoints( aTextBox->GetPolyShape().Outline( 0 ) );
 
 break;
 }
 
 case T_angle:
 // Set the angle of the text only, the coordinates of the box (a polygon) are
 // already at the right position, and must not be rotated
 aTextBox->EDA_TEXT::SetTextAngle( EDA_ANGLE( parseDouble( "text box angle" ), DEGREES_T ) );
 NeedRIGHT();
 break;
 
 case T_stroke:
 {
 STROKE_PARAMS_PARSER strokeParser( reader, pcbIUScale.IU_PER_MM );
 strokeParser.SyncLineReaderWith( *this );
 
 strokeParser.ParseStroke( stroke );
 SyncLineReaderWith( strokeParser );
 break;
 }
 
 case T_border:
 aTextBox->SetBorderEnabled( parseBool() );
 NeedRIGHT();
 break;
 
 case T_margins:
 parseMargins( left, top, right, bottom );
 aTextBox->SetMarginLeft( left );
 aTextBox->SetMarginTop( top );
 aTextBox->SetMarginRight( right );
 aTextBox->SetMarginBottom( bottom );
 foundMargins = true;
 NeedRIGHT();
 break;
 
 case T_layer:
 aTextBox->SetLayer( parseBoardItemLayer() );
 NeedRIGHT();
 break;
 
 case T_span:
 if( PCB_TABLECELL* cell = dynamic_cast<PCB_TABLECELL*>( aTextBox ) )
 {
 cell->SetColSpan( parseInt( "column span" ) );
 cell->SetRowSpan( parseInt( "row span" ) );
 }
 else
 {
 Expecting( "angle, width, layer, effects, render_cache, uuid or tstamp" );
 }
 
 NeedRIGHT();
 break;
 
 case T_tstamp:
 case T_uuid:
 NextTok();
 const_cast<KIID&>( aTextBox->m_Uuid ) = CurStrToKIID();
 NeedRIGHT();
 break;
 
 case T_effects:
 parseEDA_TEXT( static_cast<EDA_TEXT*>( aTextBox ) );
 break;
 
 case T_render_cache:
 parseRenderCache( static_cast<EDA_TEXT*>( aTextBox ) );
 break;
 
 default:
 if( dynamic_cast<PCB_TABLECELL*>( aTextBox ) != nullptr )
 Expecting( "locked, start, pts, angle, width, layer, effects, span, render_cache, uuid or tstamp" );
 else
 Expecting( "locked, start, pts, angle, width, layer, effects, render_cache, uuid or tstamp" );
 }
 }
 
 aTextBox->SetStroke( stroke );
 
 if( m_requiredVersion < 20230825 ) // compat, we move to an explicit flag
 aTextBox->SetBorderEnabled( stroke.GetWidth() >= 0 );
 
 if( !foundMargins )
 {
 int margin = aTextBox->GetLegacyTextMargin();
 aTextBox->SetMarginLeft( margin );
 aTextBox->SetMarginTop( margin );
 aTextBox->SetMarginRight( margin );
 aTextBox->SetMarginBottom( margin );
 }
 
 if( FOOTPRINT* parentFP = dynamic_cast<FOOTPRINT*>( aTextBox->GetParent() ) )
 {
 aTextBox->Rotate( { 0, 0 }, parentFP->GetOrientation() );
 aTextBox->Move( parentFP->GetPosition() );
 }
}
 
 
PCB_TABLE* PCB_IO_KICAD_SEXPR_PARSER::parsePCB_TABLE( BOARD_ITEM* aParent )
{
 wxCHECK_MSG( CurTok() == T_table, nullptr,
 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as a table." ) );
 
 T token;
 STROKE_PARAMS borderStroke( -1, LINE_STYLE::SOLID );
 STROKE_PARAMS separatorsStroke( -1, LINE_STYLE::SOLID );
 std::unique_ptr<PCB_TABLE> table = std::make_unique<PCB_TABLE>( aParent, -1 );
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 if( token == T_locked )
 {
 table->SetLocked( true );
 token = NextTok();
 }
 
 if( token != T_LEFT )
 Expecting( T_LEFT );
 
 token = NextTok();
 
 switch( token )
 {
 case T_column_count:
 table->SetColCount( parseInt( "column count" ) );
 NeedRIGHT();
 break;
 
 case T_layer:
 table->SetLayer( parseBoardItemLayer() );
 NeedRIGHT();
 break;
 
 case T_column_widths:
 {
 int col = 0;
 
 while( ( token = NextTok() ) != T_RIGHT )
 table->SetColWidth( col++, parseBoardUnits() );
 
 break;
 }
 
 case T_row_heights:
 {
 int row = 0;
 
 while( ( token = NextTok() ) != T_RIGHT )
 table->SetRowHeight( row++, parseBoardUnits() );
 
 break;
 }
 
 case T_cells:
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 if( token != T_LEFT )
 Expecting( T_LEFT );
 
 token = NextTok();
 
 if( token != T_table_cell )
 Expecting( "table_cell" );
 
 table->AddCell( parsePCB_TABLECELL( table.get() ) );
 }
 
 break;
 
 case T_border:
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 if( token != T_LEFT )
 Expecting( T_LEFT );
 
 token = NextTok();
 
 switch( token )
 {
 case T_external:
 table->SetStrokeExternal( parseBool() );
 NeedRIGHT();
 break;
 
 case T_header:
 table->SetStrokeHeader( parseBool() );
 NeedRIGHT();
 break;
 
 case T_stroke:
 {
 STROKE_PARAMS_PARSER strokeParser( reader, pcbIUScale.IU_PER_MM );
 strokeParser.SyncLineReaderWith( *this );
 
 strokeParser.ParseStroke( borderStroke );
 SyncLineReaderWith( strokeParser );
 
 table->SetBorderStroke( borderStroke );
 break;
 }
 
 default:
 Expecting( "external, header or stroke" );
 break;
 }
 }
 
 break;
 
 case T_separators:
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 if( token != T_LEFT )
 Expecting( T_LEFT );
 
 token = NextTok();
 
 switch( token )
 {
 case T_rows:
 table->SetStrokeRows( parseBool() );
 NeedRIGHT();
 break;
 
 case T_cols:
 table->SetStrokeColumns( parseBool() );
 NeedRIGHT();
 break;
 
 case T_stroke:
 {
 STROKE_PARAMS_PARSER strokeParser( reader, pcbIUScale.IU_PER_MM );
 strokeParser.SyncLineReaderWith( *this );
 
 strokeParser.ParseStroke( separatorsStroke );
 SyncLineReaderWith( strokeParser );
 
 table->SetSeparatorsStroke( separatorsStroke );
 break;
 }
 
 default:
 Expecting( "rows, cols, or stroke" );
 break;
 }
 }
 
 break;
 
 default:
 Expecting( "columns, layer, col_widths, row_heights, border, separators, header or "
 "cells" );
 }
 }
 
 return table.release();
}
 
 
PCB_DIMENSION_BASE* PCB_IO_KICAD_SEXPR_PARSER::parseDIMENSION( BOARD_ITEM* aParent )
{
 wxCHECK_MSG( CurTok() == T_dimension, nullptr,
 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as DIMENSION." ) );
 
 T token;
 bool locked = false;
 std::unique_ptr<PCB_DIMENSION_BASE> dim;
 
 token = NextTok();
 
 // Free 'locked' token from 6.0/7.0 formats
 if( token == T_locked )
 {
 locked = true;
 token = NextTok();
 }
 
 // skip value that used to be saved
 if( token != T_LEFT )
 NeedLEFT();
 
 token = NextTok();
 
 bool isLegacyDimension = false;
 
 // Old format
 if( token == T_width )
 {
 isLegacyDimension = true;
 dim = std::make_unique<PCB_DIM_ALIGNED>( aParent );
 dim->SetLineThickness( parseBoardUnits( "dimension width value" ) );
 NeedRIGHT();
 }
 else
 {
 if( token != T_type )
 Expecting( T_type );
 
 switch( NextTok() )
 {
 case T_aligned: dim = std::make_unique<PCB_DIM_ALIGNED>( aParent ); break;
 case T_orthogonal: dim = std::make_unique<PCB_DIM_ORTHOGONAL>( aParent ); break;
 case T_leader: dim = std::make_unique<PCB_DIM_LEADER>( aParent ); break;
 case T_center: dim = std::make_unique<PCB_DIM_CENTER>( aParent ); break;
 case T_radial: dim = std::make_unique<PCB_DIM_RADIAL>( aParent ); break;
 default: wxFAIL_MSG( wxT( "Cannot parse unknown dimension type " )
 + GetTokenString( CurTok() ) );
 }
 
 NeedRIGHT();
 }
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 if( token != T_LEFT )
 Expecting( T_LEFT );
 
 token = NextTok();
 
 switch( token )
 {
 case T_layer:
 dim->SetLayer( parseBoardItemLayer() );
 NeedRIGHT();
 break;
 
 case T_tstamp:
 case T_uuid:
 NextTok();
 const_cast<KIID&>( dim->m_Uuid ) = CurStrToKIID();
 NeedRIGHT();
 break;
 
 case T_gr_text:
 {
 PCB_TEXT* text = parsePCB_TEXT( m_board );
 
 dim->EDA_TEXT::operator=( *text );
 
 // Fetch other dim properties out of the text item
 dim->SetTextPos( text->GetTextPos() );
 
 if( isLegacyDimension )
 {
 EDA_UNITS units = EDA_UNITS::MILLIMETRES;
 
 if( !EDA_UNIT_UTILS::FetchUnitsFromString( text->GetText(), units ) )
 dim->SetAutoUnits( true ); //Not determined => use automatic units
 
 dim->SetUnits( units );
 }
 
 delete text;
 break;
 }
 
 // New format: feature points
 case T_pts:
 {
 VECTOR2I point;
 
 parseXY( &point.x, &point.y );
 dim->SetStart( point );
 parseXY( &point.x, &point.y );
 dim->SetEnd( point );
 
 NeedRIGHT();
 break;
 }
 
 case T_height:
 {
 int height = parseBoardUnits( "dimension height value" );
 NeedRIGHT();
 
 if( dim->Type() == PCB_DIM_ORTHOGONAL_T || dim->Type() == PCB_DIM_ALIGNED_T )
 {
 PCB_DIM_ALIGNED* aligned = static_cast<PCB_DIM_ALIGNED*>( dim.get() );
 aligned->SetHeight( height );
 }
 
 break;
 }
 
 case T_leader_length:
 {
 int length = parseBoardUnits( "leader length value" );
 NeedRIGHT();
 
 if( dim->Type() == PCB_DIM_RADIAL_T )
 {
 PCB_DIM_RADIAL* radial = static_cast<PCB_DIM_RADIAL*>( dim.get() );
 radial->SetLeaderLength( length );
 }
 
 break;
 }
 
 case T_orientation:
 {
 int orientation = parseInt( "orthogonal dimension orientation" );
 NeedRIGHT();
 
 if( dim->Type() == PCB_DIM_ORTHOGONAL_T )
 {
 PCB_DIM_ORTHOGONAL* ortho = static_cast<PCB_DIM_ORTHOGONAL*>( dim.get() );
 orientation = alg::clamp( 0, orientation, 1 );
 ortho->SetOrientation( static_cast<PCB_DIM_ORTHOGONAL::DIR>( orientation ) );
 }
 
 break;
 }
 
 case T_format:
 {
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 switch( token )
 {
 case T_LEFT:
 continue;
 
 case T_prefix:
 NeedSYMBOLorNUMBER();
 dim->SetPrefix( FromUTF8() );
 NeedRIGHT();
 break;
 
 case T_suffix:
 NeedSYMBOLorNUMBER();
 dim->SetSuffix( FromUTF8() );
 NeedRIGHT();
 break;
 
 case T_units:
 {
 int mode = parseInt( "dimension units mode" );
 mode = std::max( 0, std::min( 4, mode ) );
 dim->SetUnitsMode( static_cast<DIM_UNITS_MODE>( mode ) );
 NeedRIGHT();
 break;
 }
 
 case T_units_format:
 {
 int format = parseInt( "dimension units format" );
 format = alg::clamp( 0, format, 3 );
 dim->SetUnitsFormat( static_cast<DIM_UNITS_FORMAT>( format ) );
 NeedRIGHT();
 break;
 }
 
 case T_precision:
 dim->SetPrecision( static_cast<DIM_PRECISION>( parseInt( "dimension precision" ) ) );
 NeedRIGHT();
 break;
 
 case T_override_value:
 NeedSYMBOLorNUMBER();
 dim->SetOverrideTextEnabled( true );
 dim->SetOverrideText( FromUTF8() );
 NeedRIGHT();
 break;
 
 case T_suppress_zeroes:
 dim->SetSuppressZeroes( true );
 break;
 
 default:
 Expecting( "prefix, suffix, units, units_format, precision, override_value, "
 "suppress_zeroes" );
 }
 }
 break;
 }
 
 case T_style:
 {
 // new format: default to keep text aligned off unless token is present
 dim->SetKeepTextAligned( false );
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 switch( token )
 {
 case T_LEFT:
 continue;
 
 case T_thickness:
 dim->SetLineThickness( parseBoardUnits( "extension line thickness value" ) );
 NeedRIGHT();
 break;
 
 case T_arrow_length:
 dim->SetArrowLength( parseBoardUnits( "arrow length value" ) );
 NeedRIGHT();
 break;
 
 case T_text_position_mode:
 {
 int mode = parseInt( "text position mode" );
 mode = std::max( 0, std::min( 3, mode ) );
 dim->SetTextPositionMode( static_cast<DIM_TEXT_POSITION>( mode ) );
 NeedRIGHT();
 break;
 }
 
 case T_extension_height:
 {
 PCB_DIM_ALIGNED* aligned = dynamic_cast<PCB_DIM_ALIGNED*>( dim.get() );
 wxCHECK_MSG( aligned, nullptr, wxT( "Invalid extension_height token" ) );
 aligned->SetExtensionHeight( parseBoardUnits( "extension height value" ) );
 NeedRIGHT();
 break;
 }
 
 case T_extension_offset:
 dim->SetExtensionOffset( parseBoardUnits( "extension offset value" ) );
 NeedRIGHT();
 break;
 
 case T_keep_text_aligned:
 dim->SetKeepTextAligned( true );
 break;
 
 case T_text_frame:
 {
 wxCHECK_MSG( dim->Type() == PCB_DIM_LEADER_T, nullptr,
 wxT( "Invalid text_frame token" ) );
 
 PCB_DIM_LEADER* leader = static_cast<PCB_DIM_LEADER*>( dim.get() );
 
 int textFrame = parseInt( "text frame mode" );
 textFrame = alg::clamp( 0, textFrame, 3 );
 leader->SetTextBorder( static_cast<DIM_TEXT_BORDER>( textFrame ));
 NeedRIGHT();
 break;
 }
 
 default:
 Expecting( "thickness, arrow_length, text_position_mode, extension_height, "
 "extension_offset" );
 }
 }
 
 break;
 }
 
 // Old format: feature1 stores a feature line. We only care about the origin.
 case T_feature1:
 {
 NeedLEFT();
 token = NextTok();
 
 if( token != T_pts )
 Expecting( T_pts );
 
 VECTOR2I point;
 
 parseXY( &point.x, &point.y );
 dim->SetStart( point );
 
 parseXY( nullptr, nullptr ); // Ignore second point
 NeedRIGHT();
 NeedRIGHT();
 break;
 }
 
 // Old format: feature2 stores a feature line. We only care about the end point.
 case T_feature2:
 {
 NeedLEFT();
 token = NextTok();
 
 if( token != T_pts )
 Expecting( T_pts );
 
 VECTOR2I point;
 
 parseXY( &point.x, &point.y );
 dim->SetEnd( point );
 
 parseXY( nullptr, nullptr ); // Ignore second point
 
 NeedRIGHT();
 NeedRIGHT();
 break;
 }
 
 case T_crossbar:
 {
 NeedLEFT();
 token = NextTok();
 
 if( token == T_pts )
 {
 // If we have a crossbar, we know we're an old aligned dim
 PCB_DIM_ALIGNED* aligned = static_cast<PCB_DIM_ALIGNED*>( dim.get() );
 
 // Old style: calculate height from crossbar
 VECTOR2I point1, point2;
 parseXY( &point1.x, &point1.y );
 parseXY( &point2.x, &point2.y );
 aligned->UpdateHeight( point2, point1 ); // Yes, backwards intentionally
 NeedRIGHT();
 }
 
 NeedRIGHT();
 break;
 }
 
 // Arrow: no longer saved; no-op
 case T_arrow1a:
 NeedLEFT();
 token = NextTok();
 
 if( token != T_pts )
 Expecting( T_pts );
 
 parseXY( nullptr, nullptr );
 parseXY( nullptr, nullptr );
 NeedRIGHT();
 NeedRIGHT();
 break;
 
 // Arrow: no longer saved; no-op
 case T_arrow1b:
 NeedLEFT();
 token = NextTok();
 
 if( token != T_pts )
 Expecting( T_pts );
 
 parseXY( nullptr, nullptr );
 parseXY( nullptr, nullptr );
 NeedRIGHT();
 NeedRIGHT();
 break;
 
 // Arrow: no longer saved; no-op
 case T_arrow2a:
 NeedLEFT();
 token = NextTok();
 
 if( token != T_pts )
 Expecting( T_pts );
 
 parseXY( nullptr, nullptr );
 parseXY( nullptr, nullptr );
 NeedRIGHT();
 NeedRIGHT();
 break;
 
 // Arrow: no longer saved; no-op
 case T_arrow2b:
 NeedLEFT();
 token = NextTok();
 
 if( token != T_pts )
 Expecting( T_pts );
 
 parseXY( nullptr, nullptr );
 parseXY( nullptr, nullptr );
 NeedRIGHT();
 NeedRIGHT();
 break;
 
 // Handle (locked yes) from modern times
 case T_locked:
 {
 // Unsure if we ever wrote out (locked) for dimensions, so use maybeAbsent just in case
 bool isLocked = parseMaybeAbsentBool( true );
 dim->SetLocked( isLocked );
 break;
 }
 
 default:
 Expecting( "layer, tstamp, uuid, gr_text, feature1, feature2, crossbar, arrow1a, "
 "arrow1b, arrow2a, or arrow2b" );
 }
 }
 
 if( locked )
 dim->SetLocked( true );
 
 dim->Update();
 
 return dim.release();
}
 
 
FOOTPRINT* PCB_IO_KICAD_SEXPR_PARSER::parseFOOTPRINT( wxArrayString* aInitialComments )
{
 try
 {
 return parseFOOTPRINT_unchecked( aInitialComments );
 }
 catch( const PARSE_ERROR& parse_error )
 {
 if( m_tooRecent )
 throw FUTURE_FORMAT_ERROR( parse_error, GetRequiredVersion() );
 else
 throw;
 }
}
 
 
FOOTPRINT* PCB_IO_KICAD_SEXPR_PARSER::parseFOOTPRINT_unchecked( wxArrayString* aInitialComments )
{
 wxCHECK_MSG( CurTok() == T_module || CurTok() == T_footprint, nullptr,
 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as FOOTPRINT." ) );
 
 wxString name;
 VECTOR2I pt;
 T token;
 LIB_ID fpid;
 int attributes = 0;
 
 std::unique_ptr<FOOTPRINT> footprint = std::make_unique<FOOTPRINT>( m_board );
 
 footprint->SetInitialComments( aInitialComments );
 
 token = NextTok();
 
 if( !IsSymbol( token ) && token != T_NUMBER )
 Expecting( "symbol|number" );
 
 name = FromUTF8();
 
 if( !name.IsEmpty() && fpid.Parse( name, true ) >= 0 )
 {
 THROW_IO_ERROR( wxString::Format( _( "Invalid footprint ID in\nfile: %s\nline: %d\n"
 "offset: %d." ),
 CurSource(), CurLineNumber(), CurOffset() ) );
 }
 
 auto checkVersion =
 [&]()
 {
 if( m_requiredVersion > SEXPR_BOARD_FILE_VERSION )
 {
 throw FUTURE_FORMAT_ERROR( fmt::format( "{}", m_requiredVersion ),
 m_generatorVersion );
 }
 };
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 if( token == T_LEFT )
 token = NextTok();
 
 switch( token )
 {
 case T_version:
 {
 // Theoretically a footprint nested in a PCB could declare its own version, though
 // as of writing this comment we don't do that. Just in case, take the greater
 // version.
 int this_version = parseInt( FromUTF8().mb_str( wxConvUTF8 ) );
 NeedRIGHT();
 m_requiredVersion = std::max( m_requiredVersion, this_version );
 m_tooRecent = ( m_requiredVersion > SEXPR_BOARD_FILE_VERSION );
 footprint->SetFileFormatVersionAtLoad( this_version );
 break;
 }
 
 case T_generator:
 // We currently ignore the generator when parsing. It is included in the file for manual
 // indication of where the footprint came from.
 NeedSYMBOL();
 NeedRIGHT();
 break;
 
 case T_generator_version:
 {
 NeedSYMBOL();
 m_generatorVersion = FromUTF8();
 NeedRIGHT();
 
 // If the format includes a generator version, by this point we have enough info to
 // do the version check here
 checkVersion();
 
 break;
 }
 
 case T_locked:
 footprint->SetLocked( parseMaybeAbsentBool( true ) );
 break;
 
 case T_placed:
 footprint->SetIsPlaced( parseMaybeAbsentBool( true ) );
 break;
 
 case T_layer:
 {
 // Footprints can be only on the front side or the back side.
 // but because we can find some stupid layer in file, ensure a
 // acceptable layer is set for the footprint
 PCB_LAYER_ID layer = parseBoardItemLayer();
 footprint->SetLayer( layer == B_Cu ? B_Cu : F_Cu );
 NeedRIGHT();
 break;
 }
 
 case T_tedit:
 parseHex();
 NeedRIGHT();
 break;
 
 case T_tstamp:
 case T_uuid:
 NextTok();
 const_cast<KIID&>( footprint->m_Uuid ) = CurStrToKIID();
 NeedRIGHT();
 break;
 
 case T_at:
 pt.x = parseBoardUnits( "X coordinate" );
 pt.y = parseBoardUnits( "Y coordinate" );
 footprint->SetPosition( pt );
 token = NextTok();
 
 if( token == T_NUMBER )
 {
 footprint->SetOrientation( EDA_ANGLE( parseDouble(), DEGREES_T ) );
 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
 footprint->SetLibDescription( FromUTF8() );
 NeedRIGHT();
 break;
 
 case T_tags:
 NeedSYMBOLorNUMBER(); // some symbols can be 0508, so a number is also a symbol here
 footprint->SetKeywords( FromUTF8() );
 NeedRIGHT();
 break;
 
 case T_property:
 {
 wxString value;
 
 NeedSYMBOL();
 wxString pName = FromUTF8();
 NeedSYMBOL();
 wxString pValue = FromUTF8();
 
 // Prior to PCB fields, we used to use properties for special values instead of
 // using (keyword_example "value")
 if( m_requiredVersion < 20230620 )
 {
 // Skip legacy non-field properties sent from symbols that should not be kept
 // in footprints.
 if( pName == "ki_keywords" || pName == "ki_locked" )
 {
 NeedRIGHT();
 break;
 }
 
 // Description from symbol (not the fooprint library description stored in (descr) )
 // used to be stored as a reserved key value
 if( pName == "ki_description" )
 {
 footprint->GetFieldById( DESCRIPTION_FIELD )->SetText( pValue );
 NeedRIGHT();
 break;
 }
 
 // Sheet file and name used to be stored as properties invisible to the user
 if( pName == "Sheetfile" || pName == "Sheet file" )
 {
 footprint->SetSheetfile( pValue );
 NeedRIGHT();
 break;
 }
 
 if( pName == "Sheetname" || pName == "Sheet name" )
 {
 footprint->SetSheetname( pValue );
 NeedRIGHT();
 break;
 }
 }
 
 // 8.0.0rc3 had a bug where these properties were mistakenly added to the footprint as fields,
 // this will remove them as fields but still correctly set the footprint filters
 if( pName == "ki_fp_filters" )
 {
 footprint->SetFilters( pValue );
 
 // Use the text effect parsing function because it will handle ki_fp_filters as a property
 // with no text effects, but will also handle parsing the text effects. We just drop the effects
 // if they're present.
 PCB_FIELD ignored = PCB_FIELD( footprint.get(), footprint->GetFieldCount(), pName );
 parsePCB_TEXT_effects( &ignored );
 
 break;
 }
 
 PCB_FIELD* field = nullptr;
 
 if( footprint->HasFieldByName( pName ) )
 {
 field = footprint->GetFieldByName( pName );
 field->SetText( pValue );
 }
 else
 {
 field = footprint->AddField( PCB_FIELD( footprint.get(), footprint->GetFieldCount(),
 pName ) );
 
 field->SetText( pValue );
 field->SetLayer( footprint->GetLayer() == F_Cu ? F_Fab : B_Fab );
 
 if( m_board ) // can be null when reading a lib
 field->StyleFromSettings( m_board->GetDesignSettings() );
 }
 
 // Hide the field by default if it is a legacy field that did not have
 // text effects applied, since hide is a negative effect
 if( m_requiredVersion < 20230620 )
 field->SetVisible( false );
 else
 field->SetVisible( true );
 
 parsePCB_TEXT_effects( field );
 }
 break;
 
 case T_path:
 NeedSYMBOLorNUMBER(); // Paths can be numerical so a number is also a symbol here
 footprint->SetPath( KIID_PATH( FromUTF8() ) );
 NeedRIGHT();
 break;
 
 case T_sheetname:
 NeedSYMBOL();
 footprint->SetSheetname( FromUTF8() );
 NeedRIGHT();
 break;
 
 case T_sheetfile:
 NeedSYMBOL();
 footprint->SetSheetfile( FromUTF8() );
 NeedRIGHT();
 break;
 
 case T_autoplace_cost90:
 case T_autoplace_cost180:
 parseInt( "legacy auto-place cost" );
 NeedRIGHT();
 break;
 
 case T_private_layers:
 {
 LSET privateLayers;
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 auto it = m_layerIndices.find( CurStr() );
 
 if( it != m_layerIndices.end() )
 privateLayers.set( it->second );
 else
 Expecting( "layer name" );
 }
 
 if( m_requiredVersion < 20220427 )
 {
 privateLayers.set( Edge_Cuts, false );
 privateLayers.set( Margin, false );
 }
 
 footprint->SetPrivateLayers( privateLayers );
 break;
 }
 
 case T_net_tie_pad_groups:
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 footprint->AddNetTiePadGroup( CurStr() );
 
 break;
 
 case T_solder_mask_margin:
 footprint->SetLocalSolderMaskMargin( parseBoardUnits( "local solder mask margin value" ) );
 NeedRIGHT();
 
 // In pre-9.0 files "0" meant inherit.
 if( m_requiredVersion <= 20240201 && footprint->GetLocalSolderMaskMargin() == 0 )
 footprint->SetLocalSolderMaskMargin( {} );
 
 break;
 
 case T_solder_paste_margin:
 footprint->SetLocalSolderPasteMargin( parseBoardUnits( "local solder paste margin value" ) );
 NeedRIGHT();
 
 // In pre-9.0 files "0" meant inherit.
 if( m_requiredVersion <= 20240201 && footprint->GetLocalSolderPasteMargin() == 0 )
 footprint->SetLocalSolderPasteMargin( {} );
 
 break;
 
 case T_solder_paste_ratio: // legacy token
 case T_solder_paste_margin_ratio:
 footprint->SetLocalSolderPasteMarginRatio( parseDouble( "local solder paste margin ratio value" ) );
 NeedRIGHT();
 
 // In pre-9.0 files "0" meant inherit.
 if( m_requiredVersion <= 20240201 && footprint->GetLocalSolderPasteMarginRatio() == 0 )
 footprint->SetLocalSolderPasteMarginRatio( {} );
 
 break;
 
 case T_clearance:
 footprint->SetLocalClearance( parseBoardUnits( "local clearance value" ) );
 NeedRIGHT();
 
 // In pre-9.0 files "0" meant inherit.
 if( m_requiredVersion <= 20240201 && footprint->GetLocalClearance() == 0 )
 footprint->SetLocalClearance( {} );
 
 break;
 
 case T_zone_connect:
 footprint->SetLocalZoneConnection((ZONE_CONNECTION) parseInt( "zone connection value" ) );
 NeedRIGHT();
 break;
 
 case T_thermal_width:
 case T_thermal_gap:
 // Interestingly, these have never been exposed in the GUI
 parseBoardUnits( token );
 NeedRIGHT();
 break;
 
 case T_attr:
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 switch( token )
 {
 case T_virtual: // legacy token prior to version 20200826
 attributes |= FP_EXCLUDE_FROM_POS_FILES | FP_EXCLUDE_FROM_BOM;
 break;
 
 case T_through_hole:
 attributes |= FP_THROUGH_HOLE;
 break;
 
 case T_smd:
 attributes |= FP_SMD;
 break;
 
 case T_board_only:
 attributes |= FP_BOARD_ONLY;
 break;
 
 case T_exclude_from_pos_files:
 attributes |= FP_EXCLUDE_FROM_POS_FILES;
 break;
 
 case T_exclude_from_bom:
 attributes |= FP_EXCLUDE_FROM_BOM;
 break;
 
 case T_allow_missing_courtyard:
 attributes |= FP_ALLOW_MISSING_COURTYARD;
 break;
 
 case T_dnp:
 attributes |= FP_DNP;
 break;
 
 case T_allow_soldermask_bridges:
 attributes |= FP_ALLOW_SOLDERMASK_BRIDGES;
 break;
 
 default:
 Expecting( "through_hole, smd, virtual, board_only, exclude_from_pos_files, "
 "exclude_from_bom or allow_solder_mask_bridges" );
 }
 }
 
 break;
 
 case T_fp_text:
 {
 PCB_TEXT* text = parsePCB_TEXT( footprint.get() );
 
 if( PCB_FIELD* field = dynamic_cast<PCB_FIELD*>( text ) )
 {
 // Fields other than reference and value weren't historically
 // stored in fp_texts so we don't need to handle them here
 switch( field->GetId() )
 {
 case REFERENCE_FIELD:
 footprint->Reference() = PCB_FIELD( *text, REFERENCE_FIELD );
 const_cast<KIID&>( footprint->Reference().m_Uuid ) = text->m_Uuid;
 delete text;
 break;
 
 case VALUE_FIELD:
 footprint->Value() = PCB_FIELD( *text, VALUE_FIELD );
 const_cast<KIID&>( footprint->Value().m_Uuid ) = text->m_Uuid;
 delete text;
 break;
 }
 }
 else
 footprint->Add( text, ADD_MODE::APPEND, true );
 
 break;
 }
 
 case T_fp_text_box:
 {
 PCB_TEXTBOX* textbox = parsePCB_TEXTBOX( footprint.get() );
 footprint->Add( textbox, ADD_MODE::APPEND, true );
 break;
 }
 
 case T_table:
 {
 PCB_TABLE* table = parsePCB_TABLE( footprint.get() );
 footprint->Add( table, ADD_MODE::APPEND, true );
 break;
 }
 
 case T_fp_arc:
 case T_fp_circle:
 case T_fp_curve:
 case T_fp_rect:
 case T_fp_line:
 case T_fp_poly:
 {
 PCB_SHAPE* shape = parsePCB_SHAPE( footprint.get() );
 footprint->Add( shape, ADD_MODE::APPEND, true );
 break;
 }
 
 case T_image:
 {
 PCB_REFERENCE_IMAGE* image = parsePCB_REFERENCE_IMAGE( footprint.get() );
 footprint->Add( image, ADD_MODE::APPEND, true );
 break;
 }
 
 case T_dimension:
 {
 PCB_DIMENSION_BASE* dimension = parseDIMENSION( footprint.get() );
 footprint->Add( dimension, ADD_MODE::APPEND, true );
 break;
 }
 
 case T_pad:
 {
 PAD* pad = parsePAD( footprint.get() );
 footprint->Add( pad, ADD_MODE::APPEND, true );
 break;
 }
 
 case T_model:
 {
 FP_3DMODEL* model = parse3DModel();
 footprint->Add3DModel( model );
 delete model;
 break;
 }
 
 case T_zone:
 {
 ZONE* zone = parseZONE( footprint.get() );
 footprint->Add( zone, ADD_MODE::APPEND, true );
 break;
 }
 
 case T_group:
 parseGROUP( footprint.get() );
 break;
 
 default:
 Expecting( "locked, placed, tedit, tstamp, uuid, at, descr, tags, path, "
 "autoplace_cost90, autoplace_cost180, solder_mask_margin, "
 "solder_paste_margin, solder_paste_margin_ratio, clearance, "
 "zone_connect, thermal_gap, attr, fp_text, "
 "fp_arc, fp_circle, fp_curve, fp_line, fp_poly, fp_rect, pad, "
 "zone, group, generator, version or model" );
 }
 }
 
 // In legacy files the lack of attributes indicated a through-hole component which was by
 // default excluded from pos files. However there was a hack to look for SMD pads and
 // consider those "mislabeled through-hole components" and therefore include them in place
 // files. We probably don't want to get into that game so we'll just include them by
 // default and let the user change it if required.
 if( m_requiredVersion < 20200826 && attributes == 0 )
 attributes |= FP_THROUGH_HOLE;
 
 if( m_requiredVersion <= LEGACY_NET_TIES )
 {
 if( footprint->GetKeywords().StartsWith( wxT( "net tie" ) ) )
 {
 wxString padGroup;
 
 for( PAD* pad : footprint->Pads() )
 {
 if( !padGroup.IsEmpty() )
 padGroup += wxS( ", " );
 
 padGroup += pad->GetNumber();
 }
 
 if( !padGroup.IsEmpty() )
 footprint->AddNetTiePadGroup( padGroup );
 }
 }
 
 footprint->SetAttributes( attributes );
 
 footprint->SetFPID( fpid );
 
 return footprint.release();
}
 
 
PAD* PCB_IO_KICAD_SEXPR_PARSER::parsePAD( FOOTPRINT* aParent )
{
 wxCHECK_MSG( CurTok() == T_pad, nullptr,
 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as PAD." ) );
 
 VECTOR2I sz;
 VECTOR2I pt;
 bool foundNet = false;
 
 std::unique_ptr<PAD> pad = std::make_unique<PAD>( aParent );
 
 NeedSYMBOLorNUMBER();
 pad->SetNumber( FromUTF8() );
 
 T token = NextTok();
 
 switch( token )
 {
 case T_thru_hole:
 pad->SetAttribute( PAD_ATTRIB::PTH );
 
 // The drill token is usually missing if 0 drill size is specified.
 // Emulate it using 1 nm drill size to avoid errors.
 // Drill size cannot be set to 0 in newer versions.
 pad->SetDrillSize( VECTOR2I( 1, 1 ) );
 break;
 
 case T_smd:
 pad->SetAttribute( PAD_ATTRIB::SMD );
 
 // Default PAD object is thru hole with drill.
 // SMD pads have no hole
 pad->SetDrillSize( VECTOR2I( 0, 0 ) );
 break;
 
 case T_connect:
 pad->SetAttribute( PAD_ATTRIB::CONN );
 
 // Default PAD object is thru hole with drill.
 // CONN pads have no hole
 pad->SetDrillSize( VECTOR2I( 0, 0 ) );
 break;
 
 case T_np_thru_hole:
 pad->SetAttribute( PAD_ATTRIB::NPTH );
 break;
 
 default:
 Expecting( "thru_hole, smd, connect, or np_thru_hole" );
 }
 
 token = NextTok();
 
 switch( token )
 {
 case T_circle:
 pad->SetShape( PAD_SHAPE::CIRCLE );
 break;
 
 case T_rect:
 pad->SetShape( PAD_SHAPE::RECTANGLE );
 break;
 
 case T_oval:
 pad->SetShape( PAD_SHAPE::OVAL );
 break;
 
 case T_trapezoid:
 pad->SetShape( PAD_SHAPE::TRAPEZOID );
 break;
 
 case T_roundrect:
 // Note: the shape can be PAD_SHAPE::ROUNDRECT or PAD_SHAPE::CHAMFERED_RECT
 // (if chamfer parameters are found later in pad descr.)
 pad->SetShape( PAD_SHAPE::ROUNDRECT );
 break;
 
 case T_custom:
 pad->SetShape( PAD_SHAPE::CUSTOM );
 break;
 
 default:
 Expecting( "circle, rectangle, roundrect, oval, trapezoid or custom" );
 }
 
 std::optional<EDA_ANGLE> thermalBrAngleOverride;
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 if( token == T_locked )
 {
 // Pad locking is now a session preference
 token = NextTok();
 }
 
 if( token != T_LEFT )
 Expecting( T_LEFT );
 
 token = NextTok();
 
 switch( token )
 {
 case T_size:
 sz.x = parseBoardUnits( "width value" );
 sz.y = parseBoardUnits( "height value" );
 pad->SetSize( sz );
 NeedRIGHT();
 break;
 
 case T_at:
 pt.x = parseBoardUnits( "X coordinate" );
 pt.y = parseBoardUnits( "Y coordinate" );
 pad->SetFPRelativePosition( pt );
 token = NextTok();
 
 if( token == T_NUMBER )
 {
 pad->SetOrientation( EDA_ANGLE( parseDouble(), DEGREES_T ) );
 NeedRIGHT();
 }
 else if( token != T_RIGHT )
 {
 Expecting( ") or angle value" );
 }
 
 break;
 
 case T_rect_delta:
 {
 VECTOR2I delta;
 delta.x = parseBoardUnits( "rectangle delta width" );
 delta.y = parseBoardUnits( "rectangle delta height" );
 pad->SetDelta( delta );
 NeedRIGHT();
 break;
 }
 
 case T_drill:
 {
 bool haveWidth = false;
 VECTOR2I 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_DRILL_SHAPE::OBLONG ); break;
 
 case T_NUMBER:
 {
 if( !haveWidth )
 {
 drillSize.x = parseBoardUnits();
 
 // If height is not defined the width and height are the same.
 drillSize.y = drillSize.x;
 haveWidth = true;
 }
 else
 {
 drillSize.y = parseBoardUnits();
 }
 }
 
 break;
 
 case T_offset:
 pt.x = parseBoardUnits( "drill offset x" );
 pt.y = parseBoardUnits( "drill offset y" );
 pad->SetOffset( pt );
 NeedRIGHT();
 break;
 
 default:
 Expecting( "oval, size, or offset" );
 }
 }
 
 // This fixes a bug caused by setting the default PAD drill size to a value other
 // than 0 used to fix a bunch of debug assertions even though it is defined as a
 // through hole pad. Wouldn't a though hole pad with no drill be a surface mount
 // pad (or a conn pad which is a smd pad with no solder paste)?
 if( pad->GetAttribute() != PAD_ATTRIB::SMD && pad->GetAttribute() != PAD_ATTRIB::CONN )
 pad->SetDrillSize( drillSize );
 else
 pad->SetDrillSize( VECTOR2I( 0, 0 ) );
 
 break;
 }
 
 case T_layers:
 {
 LSET layerMask = parseBoardItemLayersAsMask();
 pad->SetLayerSet( layerMask );
 break;
 }
 
 case T_net:
 foundNet = true;
 
 if( ! pad->SetNetCode( getNetCode( parseInt( "net number" ) ), /* aNoAssert */ true ) )
 {
 wxLogError( _( "Invalid net ID in\nfile: %s\nline: %d offset: %d" ),
 CurSource(), CurLineNumber(), CurOffset() );
 }
 
 NeedSYMBOLorNUMBER();
 
 // Test validity of the netname in file for netcodes expected having a net name
 if( m_board && pad->GetNetCode() > 0 )
 {
 wxString netName( FromUTF8() );
 
 // Convert overbar syntax from `~...~` to `~{...}`. These were left out of the
 // first merge so the version is a bit later.
 if( m_requiredVersion < 20210606 )
 netName = ConvertToNewOverbarNotation( netName );
 
 if( netName != m_board->FindNet( pad->GetNetCode() )->GetNetname() )
 {
 pad->SetNetCode( NETINFO_LIST::ORPHANED, /* aNoAssert */ true );
 wxLogError( _( "Net name doesn't match ID in\nfile: %s\nline: %d offset: %d" ),
 CurSource(), CurLineNumber(), CurOffset() );
 }
 }
 
 NeedRIGHT();
 break;
 
 case T_pinfunction:
 NeedSYMBOLorNUMBER();
 pad->SetPinFunction( FromUTF8() );
 NeedRIGHT();
 break;
 
 case T_pintype:
 NeedSYMBOLorNUMBER();
 pad->SetPinType( FromUTF8() );
 NeedRIGHT();
 break;
 
 case T_die_length:
 pad->SetPadToDieLength( parseBoardUnits( T_die_length ) );
 NeedRIGHT();
 break;
 
 case T_solder_mask_margin:
 pad->SetLocalSolderMaskMargin( parseBoardUnits( "local solder mask margin value" ) );
 NeedRIGHT();
 
 // In pre-9.0 files "0" meant inherit.
 if( m_requiredVersion <= 20240201 && pad->GetLocalSolderMaskMargin() == 0 )
 pad->SetLocalSolderMaskMargin( {} );
 
 break;
 
 case T_solder_paste_margin:
 pad->SetLocalSolderPasteMargin( parseBoardUnits( "local solder paste margin value" ) );
 NeedRIGHT();
 
 // In pre-9.0 files "0" meant inherit.
 if( m_requiredVersion <= 20240201 && pad->GetLocalSolderPasteMargin() == 0 )
 pad->SetLocalSolderPasteMargin( {} );
 
 break;
 
 case T_solder_paste_margin_ratio:
 pad->SetLocalSolderPasteMarginRatio( parseDouble( "local solder paste margin ratio value" ) );
 NeedRIGHT();
 
 // In pre-9.0 files "0" meant inherit.
 if( m_requiredVersion <= 20240201 && pad->GetLocalSolderPasteMarginRatio() == 0 )
 pad->SetLocalSolderPasteMarginRatio( {} );
 
 break;
 
 case T_clearance:
 pad->SetLocalClearance( parseBoardUnits( "local clearance value" ) );
 NeedRIGHT();
 
 // In pre-9.0 files "0" meant inherit.
 if( m_requiredVersion <= 20240201 && pad->GetLocalClearance() == 0 )
 pad->SetLocalClearance( {} );
 
 break;
 
 case T_teardrops:
 parseTEARDROP_PARAMETERS( &pad->GetTeardropParams() );
 break;
 
 case T_zone_connect:
 pad->SetLocalZoneConnection( (ZONE_CONNECTION) parseInt( "zone connection value" ) );
 NeedRIGHT();
 break;
 
 case T_thermal_width: // legacy token
 case T_thermal_bridge_width:
 pad->SetThermalSpokeWidth( parseBoardUnits( token ) );
 NeedRIGHT();
 break;
 
 case T_thermal_bridge_angle:
 thermalBrAngleOverride = EDA_ANGLE( parseDouble( "thermal spoke angle" ), DEGREES_T );
 NeedRIGHT();
 break;
 
 
 case T_thermal_gap:
 pad->SetThermalGap( parseBoardUnits( "thermal relief gap value" ) );
 NeedRIGHT();
 break;
 
 case T_roundrect_rratio:
 pad->SetRoundRectRadiusRatio( parseDouble( "roundrect radius ratio" ) );
 NeedRIGHT();
 break;
 
 case T_chamfer_ratio:
 pad->SetChamferRectRatio( parseDouble( "chamfer ratio" ) );
 
 if( pad->GetChamferRectRatio() > 0 )
 pad->SetShape( PAD_SHAPE::CHAMFERED_RECT );
 
 NeedRIGHT();
 break;
 
 case T_chamfer:
 {
 int chamfers = 0;
 bool end_list = false;
 
 while( !end_list )
 {
 token = NextTok();
 
 switch( token )
 {
 case T_top_left:
 chamfers |= RECT_CHAMFER_TOP_LEFT;
 break;
 
 case T_top_right:
 chamfers |= RECT_CHAMFER_TOP_RIGHT;
 break;
 
 case T_bottom_left:
 chamfers |= RECT_CHAMFER_BOTTOM_LEFT;
 break;
 
 case T_bottom_right:
 chamfers |= RECT_CHAMFER_BOTTOM_RIGHT;
 break;
 
 case T_RIGHT:
 pad->SetChamferPositions( chamfers );
 end_list = true;
 break;
 
 default:
 Expecting( "chamfer_top_left chamfer_top_right chamfer_bottom_left or "
 "chamfer_bottom_right" );
 }
 }
 
 if( pad->GetChamferPositions() != RECT_NO_CHAMFER )
 pad->SetShape( PAD_SHAPE::CHAMFERED_RECT );
 
 break;
 }
 
 case T_property:
 while( token != T_RIGHT )
 {
 token = NextTok();
 
 switch( token )
 {
 case T_pad_prop_bga: pad->SetProperty( PAD_PROP::BGA ); break;
 case T_pad_prop_fiducial_glob: pad->SetProperty( PAD_PROP::FIDUCIAL_GLBL ); break;
 case T_pad_prop_fiducial_loc: pad->SetProperty( PAD_PROP::FIDUCIAL_LOCAL ); break;
 case T_pad_prop_testpoint: pad->SetProperty( PAD_PROP::TESTPOINT ); break;
 case T_pad_prop_castellated: pad->SetProperty( PAD_PROP::CASTELLATED ); break;
 case T_pad_prop_heatsink: pad->SetProperty( PAD_PROP::HEATSINK ); break;
 case T_pad_prop_mechanical: pad->SetProperty( PAD_PROP::MECHANICAL ); break;
 case T_none: pad->SetProperty( PAD_PROP::NONE ); break;
 case T_RIGHT: break;
 
 default:
#if 0 // Currently: skip unknown property
 Expecting( "pad_prop_bga pad_prop_fiducial_glob pad_prop_fiducial_loc"
 " pad_prop_heatsink or pad_prop_castellated" );
#endif
 break;
 }
 }
 
 break;
 
 case T_options:
 parsePAD_option( pad.get() );
 break;
 
 case T_primitives:
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 if( token == T_LEFT )
 token = NextTok();
 
 switch( token )
 {
 case T_gr_arc:
 case T_gr_line:
 case T_gr_circle:
 case T_gr_rect:
 case T_gr_poly:
 case T_gr_curve:
 pad->AddPrimitive( parsePCB_SHAPE( nullptr ) );
 break;
 
 case T_gr_bbox:
 {
 PCB_SHAPE* numberBox = parsePCB_SHAPE( nullptr );
 numberBox->SetIsProxyItem();
 pad->AddPrimitive( numberBox );
 break;
 }
 
 case T_gr_vector:
 {
 PCB_SHAPE* spokeTemplate = parsePCB_SHAPE( nullptr );
 spokeTemplate->SetIsProxyItem();
 pad->AddPrimitive( spokeTemplate );
 break;
 }
 
 default:
 Expecting( "gr_line, gr_arc, gr_circle, gr_curve, gr_rect, gr_bbox or gr_poly" );
 break;
 }
 }
 
 break;
 
 case T_remove_unused_layers:
 {
 bool remove = parseMaybeAbsentBool( true );
 pad->SetRemoveUnconnected( remove );
 break;
 }
 
 case T_keep_end_layers:
 {
 bool keep = parseMaybeAbsentBool( true );
 pad->SetKeepTopBottom( keep );
 break;
 }
 
 case T_zone_layer_connections:
 {
 LSET cuLayers = pad->GetLayerSet() & LSET::AllCuMask();
 
 for( PCB_LAYER_ID layer : cuLayers.Seq() )
 pad->SetZoneLayerOverride( layer, ZLO_FORCE_NO_ZONE_CONNECTION );
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 PCB_LAYER_ID layer = lookUpLayer<PCB_LAYER_ID>( m_layerIndices );
 
 if( layer < F_Cu || layer > B_Cu )
 Expecting( "copper layer name" );
 
 pad->SetZoneLayerOverride( layer, ZLO_FORCE_FLASHED );
 }
 
 break;
 }
 
 // Continue to process "(locked)" format which was output during 5.99 development
 case T_locked:
 // Pad locking is now a session preference
 parseMaybeAbsentBool( true );
 break;
 
 case T_tstamp:
 case T_uuid:
 NextTok();
 const_cast<KIID&>( pad->m_Uuid ) = CurStrToKIID();
 NeedRIGHT();
 break;
 
 default:
 Expecting( "at, locked, drill, layers, net, die_length, roundrect_rratio, "
 "solder_mask_margin, solder_paste_margin, solder_paste_margin_ratio, uuid, "
 "clearance, tstamp, primitives, remove_unused_layers, keep_end_layers, "
 "pinfunction, pintype, zone_connect, thermal_width, thermal_gap or "
 "teardrops" );
 }
 }
 
 if( !foundNet )
 {
 // Make sure default netclass is correctly assigned to pads that don't define a net.
 pad->SetNetCode( 0, /* aNoAssert */ true );
 }
 
 if( thermalBrAngleOverride )
 {
 pad->SetThermalSpokeAngle( *thermalBrAngleOverride );
 }
 else
 {
 // This is here because custom pad anchor shape isn't known before reading (options
 if( pad->GetShape() == PAD_SHAPE::CIRCLE )
 {
 pad->SetThermalSpokeAngle( ANGLE_45 );
 }
 else if( pad->GetShape() == PAD_SHAPE::CUSTOM
 && pad->GetAnchorPadShape() == PAD_SHAPE::CIRCLE )
 {
 if( m_requiredVersion <= 20211014 ) // 6.0
 pad->SetThermalSpokeAngle( ANGLE_90 );
 else
 pad->SetThermalSpokeAngle( ANGLE_45 );
 }
 else
 {
 pad->SetThermalSpokeAngle( ANGLE_90 );
 }
 }
 
 if( !pad->CanHaveNumber() )
 {
 // At some point it was possible to assign a number to aperture pads so we need to clean
 // those out here.
 pad->SetNumber( wxEmptyString );
 }
 
 // Zero-sized pads are likely algorithmically unsafe.
 if( pad->GetSizeX() <= 0 || pad->GetSizeY() <= 0 )
 {
 pad->SetSize( VECTOR2I( pcbIUScale.mmToIU( 0.001 ), pcbIUScale.mmToIU( 0.001 ) ) );
 
 wxLogWarning( _( "Invalid zero-sized pad pinned to %s in\nfile: %s\nline: %d\noffset: %d" ),
 wxT( "1µm" ), CurSource(), CurLineNumber(), CurOffset() );
 }
 
 return pad.release();
}
 
 
bool PCB_IO_KICAD_SEXPR_PARSER::parsePAD_option( PAD* aPad )
{
 // Parse only the (option ...) inside a pad description
 for( T token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 if( token != T_LEFT )
 Expecting( T_LEFT );
 
 token = NextTok();
 
 switch( token )
 {
 case T_anchor:
 token = NextTok();
 // Custom shaped pads have a "anchor pad", which is the reference
 // for connection calculations.
 // Because this is an anchor, only the 2 very basic shapes are managed:
 // circle and rect. The default is circle
 switch( token )
 {
 case T_circle: // default
 break;
 
 case T_rect:
 aPad->SetAnchorPadShape( PAD_SHAPE::RECTANGLE );
 break;
 
 default:
 // Currently, because pad options is a moving target
 // just skip unknown keywords
 break;
 }
 NeedRIGHT();
 break;
 
 case T_clearance:
 token = NextTok();
 // Custom shaped pads have a clearance area that is the pad shape
 // (like usual pads) or the convex hull of the pad shape.
 switch( token )
 {
 case T_outline:
 aPad->SetCustomShapeInZoneOpt( PADSTACK::CUSTOM_SHAPE_ZONE_MODE::OUTLINE );
 break;
 
 case T_convexhull:
 aPad->SetCustomShapeInZoneOpt( PADSTACK::CUSTOM_SHAPE_ZONE_MODE::CONVEXHULL );
 break;
 
 default:
 // Currently, because pad options is a moving target
 // just skip unknown keywords
 break;
 }
 
 NeedRIGHT();
 break;
 
 default:
 // Currently, because pad options is a moving target
 // just skip unknown keywords
 while( (token = NextTok() ) != T_RIGHT )
 {}
 
 break;
 }
 }
 
 return true;
}
 
 
void PCB_IO_KICAD_SEXPR_PARSER::parseGROUP_members( GROUP_INFO& aGroupInfo )
{
 T token;
 
 while( ( token = NextTok() ) != T_RIGHT )
 {
 // This token is the Uuid of the item in the group.
 // Since groups are serialized at the end of the file/footprint, the Uuid should already
 // have been seen and exist in the board.
 KIID uuid( CurStr() );
 aGroupInfo.memberUuids.push_back( uuid );
 }
}
 
 
void PCB_IO_KICAD_SEXPR_PARSER::parseGROUP( BOARD_ITEM* aParent )
{
 wxCHECK_RET( CurTok() == T_group,
 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as PCB_GROUP." ) );
 
 VECTOR2I pt;
 T token;
 
 m_groupInfos.push_back( GROUP_INFO() );
 GROUP_INFO& groupInfo = m_groupInfos.back();
 groupInfo.parent = aParent;
 
 while( ( token = NextTok() ) != T_LEFT )
 {
 if( token == T_STRING )
 groupInfo.name = FromUTF8();
 else if( token == T_locked )
 groupInfo.locked = true;
 else
 Expecting( "group name or locked" );
 }
 
 for( ; token != T_RIGHT; token = NextTok() )
 {
 if( token != T_LEFT )
 Expecting( T_LEFT );
 
 token = NextTok();
 
 switch( token )
 {
 // From formats [20200811, 20231215), 'id' was used instead of 'uuid'
 case T_id:
 case T_uuid:
 NextTok();
 groupInfo.uuid = CurStrToKIID();
 NeedRIGHT();
 break;
 
 case T_locked:
 groupInfo.locked = parseBool();
 NeedRIGHT();
 break;
 
 case T_members:
 {
 parseGROUP_members( groupInfo );
 break;
 }
 
 default:
 Expecting( "uuid, locked, or members" );
 }
 }
}
 
 
void PCB_IO_KICAD_SEXPR_PARSER::parseGENERATOR( BOARD_ITEM* aParent )
{
 wxCHECK_RET( CurTok() == T_generated, wxT( "Cannot parse " ) + GetTokenString( CurTok() )
 + wxT( " as PCB_GENERATOR." ) );
 
 T token;
 
 m_generatorInfos.push_back( GENERATOR_INFO() );
 GENERATOR_INFO& genInfo = m_generatorInfos.back();
 
 genInfo.layer = F_Cu;
 genInfo.parent = aParent;
 genInfo.properties = STRING_ANY_MAP( pcbIUScale.IU_PER_MM );
 
 NeedLEFT();
 token = NextTok();
 
 // For formats [20231007, 20231215), 'id' was used instead of 'uuid'
 if( token != T_uuid && token != T_id )
 Expecting( T_uuid );
 
 NextTok();
 genInfo.uuid = CurStrToKIID();
 NeedRIGHT();
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 if( token != T_LEFT )
 Expecting( T_LEFT );
 
 token = NextTok();
 
 switch( token )
 {
 case T_type:
 NeedSYMBOL();
 genInfo.genType = FromUTF8();
 NeedRIGHT();
 break;
 
 case T_name:
 NeedSYMBOL();
 genInfo.name = FromUTF8();
 NeedRIGHT();
 break;
 
 case T_locked:
 token = NextTok();
 genInfo.locked = token == T_yes;
 NeedRIGHT();
 break;
 
 case T_layer:
 genInfo.layer = parseBoardItemLayer();
 NeedRIGHT();
 break;
 
 case T_members: parseGROUP_members( genInfo ); break;
 
 default:
 {
 wxString pName = FromUTF8();
 T tok1 = NextTok();
 
 switch( tok1 )
 {
 case T_yes:
 {
 genInfo.properties.emplace( pName, wxAny( true ) );
 NeedRIGHT();
 break;
 }
 case T_no:
 {
 genInfo.properties.emplace( pName, wxAny( false ) );
 NeedRIGHT();
 break;
 }
 case T_NUMBER:
 {
 double pValue = parseDouble();
 genInfo.properties.emplace( pName, wxAny( pValue ) );
 NeedRIGHT();
 break;
 }
 case T_STRING: // Quoted string
 {
 wxString pValue = FromUTF8();
 genInfo.properties.emplace( pName, pValue );
 NeedRIGHT();
 break;
 }
 case T_LEFT:
 {
 NeedSYMBOL();
 T tok2 = CurTok();
 
 switch( tok2 )
 {
 case T_xy:
 {
 VECTOR2I pt;
 
 pt.x = parseBoardUnits( "X coordinate" );
 pt.y = parseBoardUnits( "Y coordinate" );
 
 genInfo.properties.emplace( pName, wxAny( pt ) );
 NeedRIGHT();
 NeedRIGHT();
 
 break;
 }
 case T_pts:
 {
 SHAPE_LINE_CHAIN chain;
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 parseOutlinePoints( chain );
 
 NeedRIGHT();
 
 genInfo.properties.emplace( pName, wxAny( chain ) );
 break;
 }
 default: Expecting( "xy or pts" );
 }
 
 break;
 }
 default: Expecting( "a number, symbol, string or (" );
 }
 
 break;
 }
 }
 }
}
 
 
PCB_ARC* PCB_IO_KICAD_SEXPR_PARSER::parseARC()
{
 wxCHECK_MSG( CurTok() == T_arc, nullptr,
 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as ARC." ) );
 
 VECTOR2I pt;
 T token;
 
 std::unique_ptr<PCB_ARC> arc = std::make_unique<PCB_ARC>( m_board );
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 // Legacy locked
 if( token == T_locked )
 {
 arc->SetLocked( true );
 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" );
 arc->SetStart( pt );
 NeedRIGHT();
 break;
 
 case T_mid:
 pt.x = parseBoardUnits( "mid x" );
 pt.y = parseBoardUnits( "mid y" );
 arc->SetMid( pt );
 NeedRIGHT();
 break;
 
 case T_end:
 pt.x = parseBoardUnits( "end x" );
 pt.y = parseBoardUnits( "end y" );
 arc->SetEnd( pt );
 NeedRIGHT();
 break;
 
 case T_width:
 arc->SetWidth( parseBoardUnits( "width" ) );
 NeedRIGHT();
 break;
 
 case T_layer:
 arc->SetLayer( parseBoardItemLayer() );
 NeedRIGHT();
 break;
 
 case T_net:
 if( !arc->SetNetCode( getNetCode( parseInt( "net number" ) ), /* aNoAssert */ true ) )
 {
 wxLogError( _( "Invalid net ID in\nfile: %s\nline: %d\noffset: %d." ),
 CurSource(), CurLineNumber(), CurOffset() );
 }
 NeedRIGHT();
 break;
 
 case T_tstamp:
 case T_uuid:
 NextTok();
 const_cast<KIID&>( arc->m_Uuid ) = CurStrToKIID();
 NeedRIGHT();
 break;
 
 // We continue to parse the status field but it is no longer written
 case T_status:
 parseHex();
 NeedRIGHT();
 break;
 
 case T_locked:
 arc->SetLocked( parseMaybeAbsentBool( true ) );
 break;
 
 default:
 Expecting( "start, mid, end, width, layer, net, tstamp, uuid, or status" );
 }
 }
 
 return arc.release();
}
 
 
PCB_TRACK* PCB_IO_KICAD_SEXPR_PARSER::parsePCB_TRACK()
{
 wxCHECK_MSG( CurTok() == T_segment, nullptr,
 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as PCB_TRACK." ) );
 
 VECTOR2I pt;
 T token;
 
 std::unique_ptr<PCB_TRACK> track = std::make_unique<PCB_TRACK>( m_board );
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 // Legacy locked flag
 if( token == T_locked )
 {
 track->SetLocked( true );
 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 );
 NeedRIGHT();
 break;
 
 case T_end:
 pt.x = parseBoardUnits( "end x" );
 pt.y = parseBoardUnits( "end y" );
 track->SetEnd( pt );
 NeedRIGHT();
 break;
 
 case T_width:
 track->SetWidth( parseBoardUnits( "width" ) );
 NeedRIGHT();
 break;
 
 case T_layer:
 track->SetLayer( parseBoardItemLayer() );
 NeedRIGHT();
 break;
 
 case T_net:
 if( !track->SetNetCode( getNetCode( parseInt( "net number" ) ), /* aNoAssert */ true ) )
 {
 wxLogError( _( "Invalid net ID in\nfile: '%s'\nline: %d\noffset: %d." ),
 CurSource(), CurLineNumber(), CurOffset() );
 }
 NeedRIGHT();
 break;
 
 case T_tstamp:
 case T_uuid:
 NextTok();
 const_cast<KIID&>( track->m_Uuid ) = CurStrToKIID();
 NeedRIGHT();
 break;
 
 // We continue to parse the status field but it is no longer written
 case T_status:
 parseHex();
 NeedRIGHT();
 break;
 
 case T_locked:
 track->SetLocked( parseMaybeAbsentBool( true ) );
 break;
 
 default:
 Expecting( "start, end, width, layer, net, tstamp, uuid, or locked" );
 }
 }
 
 return track.release();
}
 
 
PCB_VIA* PCB_IO_KICAD_SEXPR_PARSER::parsePCB_VIA()
{
 wxCHECK_MSG( CurTok() == T_via, nullptr,
 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as PCB_VIA." ) );
 
 VECTOR2I pt;
 T token;
 
 std::unique_ptr<PCB_VIA> via = std::make_unique<PCB_VIA>( m_board );
 
 // File format default is no-token == no-feature.
 via->Padstack().SetUnconnectedLayerMode( PADSTACK::UNCONNECTED_LAYER_MODE::KEEP_ALL );
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 // Legacy locked
 if( token == T_locked )
 {
 via->SetLocked( true );
 token = NextTok();
 }
 
 if( token == T_LEFT )
 token = NextTok();
 
 switch( token )
 {
 case T_blind:
 via->SetViaType( VIATYPE::BLIND_BURIED );
 break;
 
 case T_micro:
 via->SetViaType( VIATYPE::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:
 {
 PCB_LAYER_ID layer1, layer2;
 NextTok();
 layer1 = lookUpLayer<PCB_LAYER_ID>( m_layerIndices );
 NextTok();
 layer2 = lookUpLayer<PCB_LAYER_ID>( m_layerIndices );
 via->SetLayerPair( layer1, layer2 );
 NeedRIGHT();
 break;
 }
 
 case T_net:
 if( !via->SetNetCode( getNetCode( parseInt( "net number" ) ), /* aNoAssert */ true ) )
 {
 wxLogError( _( "Invalid net ID in\nfile: %s\nline: %d\noffset: %d" ),
 CurSource(), CurLineNumber(), CurOffset() );
 }
 
 NeedRIGHT();
 break;
 
 case T_remove_unused_layers:
 {
 bool remove = parseMaybeAbsentBool( true );
 via->SetRemoveUnconnected( remove );
 break;
 }
 
 case T_keep_end_layers:
 {
 bool keep = parseMaybeAbsentBool( true );
 via->SetKeepStartEnd( keep );
 break;
 }
 
 case T_zone_layer_connections:
 {
 // Ensure only copper layers are stored int ZoneLayerOverride array
 LSET cuLayers = via->GetLayerSet() & LSET::AllCuMask();
 
 for( PCB_LAYER_ID layer : cuLayers.Seq() )
 {
 via->SetZoneLayerOverride( layer, ZLO_FORCE_NO_ZONE_CONNECTION );
 }
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 PCB_LAYER_ID layer = lookUpLayer<PCB_LAYER_ID>( m_layerIndices );
 
 if( layer < F_Cu || layer > B_Cu )
 Expecting( "copper layer name" );
 
 via->SetZoneLayerOverride( layer, ZLO_FORCE_FLASHED );
 }
 }
 break;
 
 case T_teardrops:
 parseTEARDROP_PARAMETERS( &via->GetTeardropParams() );
 break;
 
 case T_tstamp:
 case T_uuid:
 NextTok();
 const_cast<KIID&>( via->m_Uuid ) = CurStrToKIID();
 NeedRIGHT();
 break;
 
 // We continue to parse the status field but it is no longer written
 case T_status:
 parseHex();
 NeedRIGHT();
 break;
 
 case T_locked:
 via->SetLocked( parseMaybeAbsentBool( true ) );
 break;
 
 case T_free:
 via->SetIsFree( parseMaybeAbsentBool( true ) );
 break;
 
 default:
 Expecting( "blind, micro, at, size, drill, layers, net, free, tstamp, uuid, status or "
 "teardrops" );
 }
 }
 
 return via.release();
}
 
 
ZONE* PCB_IO_KICAD_SEXPR_PARSER::parseZONE( BOARD_ITEM_CONTAINER* aParent )
{
 wxCHECK_MSG( CurTok() == T_zone, nullptr,
 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as ZONE." ) );
 
 ZONE_BORDER_DISPLAY_STYLE hatchStyle = ZONE_BORDER_DISPLAY_STYLE::NO_HATCH;
 
 int hatchPitch = ZONE::GetDefaultHatchPitch();
 VECTOR2I pt;
 T token;
 int tmp;
 wxString netnameFromfile; // the zone net name find in file
 
 // bigger scope since each filled_polygon is concatenated in here
 std::map<PCB_LAYER_ID, SHAPE_POLY_SET> pts;
 std::map<PCB_LAYER_ID, std::vector<SEG>> legacySegs;
 PCB_LAYER_ID filledLayer;
 bool addedFilledPolygons = false;
 bool isStrokedFill = true;
 
 std::unique_ptr<ZONE> zone = std::make_unique<ZONE>( aParent );
 
 zone->SetAssignedPriority( 0 );
 
 // This is the default for board files:
 zone->SetIslandRemovalMode( ISLAND_REMOVAL_MODE::ALWAYS );
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 // legacy locked
 if( token == T_locked )
 {
 zone->SetLocked( true );
 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)
 tmp = getNetCode( parseInt( "net number" ) );
 
 if( tmp < 0 )
 tmp = 0;
 
 if( !zone->SetNetCode( tmp, /* aNoAssert */ true ) )
 {
 wxLogError( _( "Invalid net ID in\nfile: %s;\nline: %d\noffset: %d." ),
 CurSource(), CurLineNumber(), CurOffset() );
 }
 
 NeedRIGHT();
 break;
 
 case T_net_name:
 NeedSYMBOLorNUMBER();
 netnameFromfile = FromUTF8();
 NeedRIGHT();
 break;
 
 case T_layer: // keyword for zones that are on only one layer
 zone->SetLayer( parseBoardItemLayer() );
 NeedRIGHT();
 break;
 
 case T_layers: // keyword for zones that can live on a set of layers
 zone->SetLayerSet( parseBoardItemLayersAsMask() );
 break;
 
 case T_tstamp:
 case T_uuid:
 NextTok();
 const_cast<KIID&>( zone->m_Uuid ) = CurStrToKIID();
 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 = ZONE_BORDER_DISPLAY_STYLE::NO_HATCH; break;
 case T_edge: hatchStyle = ZONE_BORDER_DISPLAY_STYLE::DIAGONAL_EDGE; break;
 case T_full: hatchStyle = ZONE_BORDER_DISPLAY_STYLE::DIAGONAL_FULL; break;
 }
 
 hatchPitch = parseBoardUnits( "hatch pitch" );
 NeedRIGHT();
 break;
 
 case T_priority:
 zone->SetAssignedPriority( 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( ZONE_CONNECTION::FULL );
 break;
 
 case T_no:
 zone->SetPadConnection( ZONE_CONNECTION::NONE );
 break;
 
 case T_thru_hole_only:
 zone->SetPadConnection( ZONE_CONNECTION::THT_THERMAL );
 break;
 
 case T_clearance:
 zone->SetLocalClearance( 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_filled_areas_thickness:
 // A new zone fill strategy was added in v6, so we need to know if we're parsing
 // a zone that was filled before that. Note that the change was implemented as
 // a new parameter, so we need to check for the presence of filled_areas_thickness
 // instead of just its value.
 
 if( !parseBool() )
 isStrokedFill = false;
 
 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_hatch && token != T_polygon )
 Expecting( "segment, hatch or polygon" );
 
 switch( token )
 {
 case T_hatch:
 zone->SetFillMode( ZONE_FILL_MODE::HATCH_PATTERN );
 break;
 
 case T_segment: // deprecated, convert to polygons
 case T_polygon:
 default:
 zone->SetFillMode( ZONE_FILL_MODE::POLYGONS );
 break;
 }
 
 NeedRIGHT();
 break;
 
 case T_hatch_thickness:
 zone->SetHatchThickness( parseBoardUnits( T_hatch_thickness ) );
 NeedRIGHT();
 break;
 
 case T_hatch_gap:
 zone->SetHatchGap( parseBoardUnits( T_hatch_gap ) );
 NeedRIGHT();
 break;
 
 case T_hatch_orientation:
 {
 EDA_ANGLE orientation( parseDouble( T_hatch_orientation ), DEGREES_T );
 zone->SetHatchOrientation( orientation );
 NeedRIGHT();
 break;
 }
 
 case T_hatch_smoothing_level:
 zone->SetHatchSmoothingLevel( parseDouble( T_hatch_smoothing_level ) );
 NeedRIGHT();
 break;
 
 case T_hatch_smoothing_value:
 zone->SetHatchSmoothingValue( parseDouble( T_hatch_smoothing_value ) );
 NeedRIGHT();
 break;
 
 case T_hatch_border_algorithm:
 token = NextTok();
 
 if( token != T_hatch_thickness && token != T_min_thickness )
 Expecting( "hatch_thickness or min_thickness" );
 
 zone->SetHatchBorderAlgorithm( token == T_hatch_thickness ? 1 : 0 );
 NeedRIGHT();
 break;
 
 case T_hatch_min_hole_area:
 zone->SetHatchHoleMinArea( parseDouble( T_hatch_min_hole_area ) );
 NeedRIGHT();
 break;
 
 case T_arc_segments:
 ignore_unused( parseInt( "arc segment count" ) );
 NeedRIGHT();
 break;
 
 case T_thermal_gap:
 zone->SetThermalReliefGap( parseBoardUnits( T_thermal_gap ) );
 NeedRIGHT();
 break;
 
 case T_thermal_bridge_width:
 zone->SetThermalReliefSpokeWidth( parseBoardUnits( T_thermal_bridge_width ) );
 NeedRIGHT();
 break;
 
 case T_smoothing:
 switch( NextTok() )
 {
 case T_none:
 zone->SetCornerSmoothingType( ZONE_SETTINGS::SMOOTHING_NONE );
 break;
 
 case T_chamfer:
 if( !zone->GetIsRuleArea() ) // smoothing has meaning only for filled zones
 zone->SetCornerSmoothingType( ZONE_SETTINGS::SMOOTHING_CHAMFER );
 
 break;
 
 case T_fillet:
 if( !zone->GetIsRuleArea() ) // smoothing has meaning only for filled zones
 zone->SetCornerSmoothingType( ZONE_SETTINGS::SMOOTHING_FILLET );
 
 break;
 
 default:
 Expecting( "none, chamfer, or fillet" );
 }
 
 NeedRIGHT();
 break;
 
 case T_radius:
 tmp = parseBoardUnits( "corner radius" );
 
 if( !zone->GetIsRuleArea() ) // smoothing has meaning only for filled zones
 zone->SetCornerRadius( tmp );
 
 NeedRIGHT();
 break;
 
 case T_island_removal_mode:
 tmp = parseInt( "island_removal_mode" );
 
 if( tmp >= 0 && tmp <= 2 )
 zone->SetIslandRemovalMode( static_cast<ISLAND_REMOVAL_MODE>( tmp ) );
 
 NeedRIGHT();
 break;
 
 case T_island_area_min:
 {
 int area = parseBoardUnits( T_island_area_min );
 zone->SetMinIslandArea( area * pcbIUScale.IU_PER_MM );
 NeedRIGHT();
 break;
 }
 
 default:
 Expecting( "mode, arc_segments, thermal_gap, thermal_bridge_width, "
 "hatch_thickness, hatch_gap, hatch_orientation, "
 "hatch_smoothing_level, hatch_smoothing_value, "
 "hatch_border_algorithm, hatch_min_hole_area, smoothing, radius, "
 "island_removal_mode, or island_area_min" );
 }
 }
 
 break;
 
 case T_keepout:
 // "keepout" now means rule area, but the file token stays the same
 zone->SetIsRuleArea( true );
 
 // Initialize these two because their tokens won't appear in older files:
 zone->SetDoNotAllowPads( false );
 zone->SetDoNotAllowFootprints( false );
 
 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;
 
 case T_pads:
 token = NextTok();
 
 if( token != T_allowed && token != T_not_allowed )
 Expecting( "allowed or not_allowed" );
 
 zone->SetDoNotAllowPads( token == T_not_allowed );
 break;
 
 case T_footprints:
 token = NextTok();
 
 if( token != T_allowed && token != T_not_allowed )
 Expecting( "allowed or not_allowed" );
 
 zone->SetDoNotAllowFootprints( token == T_not_allowed );
 break;
 
 default:
 Expecting( "tracks, vias or copperpour" );
 }
 
 NeedRIGHT();
 }
 
 break;
 
 case T_polygon:
 {
 SHAPE_LINE_CHAIN outline;
 
 NeedLEFT();
 token = NextTok();
 
 if( token != T_pts )
 Expecting( T_pts );
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 parseOutlinePoints( outline );
 
 NeedRIGHT();
 
 outline.SetClosed( true );
 
 // Remark: The first polygon is the main outline.
 // Others are holes inside the main outline.
 zone->AddPolygon( outline );
 break;
 }
 
 case T_filled_polygon:
 {
 // "(filled_polygon (pts"
 NeedLEFT();
 token = NextTok();
 
 if( token == T_layer )
 {
 filledLayer = parseBoardItemLayer();
 NeedRIGHT();
 token = NextTok();
 
 if( token != T_LEFT )
 Expecting( T_LEFT );
 
 token = NextTok();
 }
 else
 {
 // for legacy, single-layer zones
 filledLayer = zone->GetFirstLayer();
 }
 
 bool island = false;
 
 if( token == T_island )
 {
 island = true;
 NeedRIGHT();
 NeedLEFT();
 token = NextTok();
 }
 
 if( token != T_pts )
 Expecting( T_pts );
 
 if( !pts.count( filledLayer ) )
 pts[filledLayer] = SHAPE_POLY_SET();
 
 SHAPE_POLY_SET& poly = pts.at( filledLayer );
 
 int idx = poly.NewOutline();
 SHAPE_LINE_CHAIN& chain = poly.Outline( idx );
 
 if( island )
 zone->SetIsIsland( filledLayer, idx );
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 parseOutlinePoints( chain );
 
 NeedRIGHT();
 
 addedFilledPolygons |= !poly.IsEmpty();
 }
 
 break;
 
 case T_fill_segments:
 {
 // Legacy segment fill
 
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 if( token != T_LEFT )
 Expecting( T_LEFT );
 
 token = NextTok();
 
 if( token != T_pts )
 Expecting( T_pts );
 
 // Legacy zones only had one layer
 filledLayer = zone->GetFirstLayer();
 
 SEG fillSegment;
 
 fillSegment.A = parseXY();
 fillSegment.B = parseXY();
 
 legacySegs[filledLayer].push_back( fillSegment );
 
 NeedRIGHT();
 }
 
 break;
 }
 
 case T_name:
 NextTok();
 zone->SetZoneName( FromUTF8() );
 NeedRIGHT();
 break;
 
 case T_attr:
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 if( token == T_LEFT )
 token = NextTok();
 
 switch( token )
 {
 case T_teardrop:
 for( token = NextTok(); token != T_RIGHT; token = NextTok() )
 {
 if( token == T_LEFT )
 token = NextTok();
 
 switch( token )
 {
 case T_type:
 token = NextTok();
 
 if( token == T_padvia )
 zone->SetTeardropAreaType( TEARDROP_TYPE::TD_VIAPAD );
 else if( token == T_track_end )
 zone->SetTeardropAreaType( TEARDROP_TYPE::TD_TRACKEND );
 else
 Expecting( "padvia or track_end" );
 
 NeedRIGHT();
 break;
 
 default:
 Expecting( "type" );
 }
 }
 
 break;
 
 default:
 Expecting( "teardrop" );
 }
 }
 break;
 
 case T_locked:
 zone->SetLocked( parseBool() );
 NeedRIGHT();
 break;
 
 default:
 Expecting( "net, layer/layers, tstamp, hatch, priority, connect_pads, min_thickness, "
 "fill, polygon, filled_polygon, fill_segments, attr, locked, uuid, or name" );
 }
 }
 
 if( zone->GetNumCorners() > 2 )
 {
 if( !zone->IsOnCopperLayer() )
 {
 //zone->SetFillMode( ZONE_FILL_MODE::POLYGONS );
 zone->SetNetCode( NETINFO_LIST::UNCONNECTED );
 }
 
 // Set hatch here, after outlines corners are read
 zone->SetBorderDisplayStyle( hatchStyle, hatchPitch, true );
 }
 
 if( addedFilledPolygons )
 {
 if( isStrokedFill && !zone->GetIsRuleArea() )
 {
 if( m_showLegacy5ZoneWarning )
 {
 wxLogWarning(
 _( "Legacy zone fill strategy is not supported anymore.\nZone fills will "
 "be converted on best-effort basis." ) );
 
 m_showLegacy5ZoneWarning = false;
 }
 
 if( zone->GetMinThickness() > 0 )
 {
 for( auto& [layer, polyset] : pts )
 {
 polyset.InflateWithLinkedHoles( zone->GetMinThickness() / 2,
 CORNER_STRATEGY::ROUND_ALL_CORNERS,
 ARC_HIGH_DEF / 2,
 SHAPE_POLY_SET::PM_STRICTLY_SIMPLE );
 }
 }
 }
 
 for( auto& [layer, polyset] : pts )
 zone->SetFilledPolysList( layer, polyset );
 
 zone->CalculateFilledArea();
 }
 else if( legacySegs.size() > 0 )
 {
 // No polygons, just segment fill?
 // Note RFB: This code might be removed if turns out this never existed for sexpr file
 // format or otherwise we should add a test case to the qa folder
 
 if( m_showLegacySegmentZoneWarning )
 {
 wxLogWarning( _( "The legacy segment zone fill mode is no longer supported.\n"
 "Zone fills will be converted on a best-effort basis." ) );
 
 m_showLegacySegmentZoneWarning = false;
 }
 
 
 for( const auto& [layer, segments] : legacySegs )
 {
 SHAPE_POLY_SET layerFill;
 
 if( zone->HasFilledPolysForLayer( layer ) )
 layerFill = SHAPE_POLY_SET( *zone->GetFill( layer ) );
 
 for( const auto& seg : segments )
 {
 SHAPE_POLY_SET segPolygon;
 
 TransformOvalToPolygon( segPolygon, seg.A, seg.B, zone->GetMinThickness(),
 ARC_HIGH_DEF, ERROR_OUTSIDE );
 
 layerFill.BooleanAdd( segPolygon, SHAPE_POLY_SET::PM_FAST );
 }
 
 
 zone->SetFilledPolysList( layer, layerFill );
 zone->CalculateFilledArea();
 }
 }
 
 
 // Ensure keepout and non copper zones do not have a net
 // (which have no sense for these zones)
 // the netcode 0 is used for these zones
 bool zone_has_net = zone->IsOnCopperLayer() && !zone->GetIsRuleArea();
 
 if( !zone_has_net )
 zone->SetNetCode( NETINFO_LIST::UNCONNECTED );
 
 // Ensure the zone net name is valid, and matches the net code, for copper zones
 if( zone_has_net
 && ( !zone->GetNet() || zone->GetNet()->GetNetname() != netnameFromfile ) )
 {
 // Can happens which old boards, with nonexistent nets ...
 // or after being edited by hand
 // We try to fix the mismatch.
 NETINFO_ITEM* net = m_board->FindNet( netnameFromfile );
 
 if( net ) // An existing net has the same net name. use it for the zone
 {
 zone->SetNetCode( net->GetNetCode() );
 }
 else // Not existing net: add a new net to keep trace of the zone netname
 {
 int newnetcode = m_board->GetNetCount();
 net = new NETINFO_ITEM( m_board, netnameFromfile, newnetcode );
 m_board->Add( net, ADD_MODE::INSERT, true );
 
 // Store the new code mapping
 pushValueIntoMap( newnetcode, net->GetNetCode() );
 
 // and update the zone netcode
 zone->SetNetCode( net->GetNetCode() );
 }
 }
 
 if( zone->IsTeardropArea() && m_requiredVersion < 20230517 )
 m_board->SetLegacyTeardrops( true );
 
 // Clear flags used in zone edition:
 zone->SetNeedRefill( false );
 
 return zone.release();
}
 
 
PCB_TARGET* PCB_IO_KICAD_SEXPR_PARSER::parsePCB_TARGET()
{
 wxCHECK_MSG( CurTok() == T_target, nullptr,
 wxT( "Cannot parse " ) + GetTokenString( CurTok() ) + wxT( " as PCB_TARGET." ) );
 
 VECTOR2I pt;
 T token;
 
 std::unique_ptr<PCB_TARGET> target = std::make_unique<PCB_TARGET>( nullptr );
 
 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:
 case T_uuid:
 NextTok();
 const_cast<KIID&>( target->m_Uuid ) = CurStrToKIID();
 NeedRIGHT();
 break;
 
 default:
 Expecting( "x, plus, at, size, width, layer, uuid, or tstamp" );
 }
 }
 
 return target.release();
}
 
 
KIID PCB_IO_KICAD_SEXPR_PARSER::CurStrToKIID()
{
 KIID aId;
 std::string idStr( CurStr() );
 
 // Older files did not quote UUIDs
 if( *idStr.begin() == '"' && *idStr.rbegin() == '"' )
 idStr = idStr.substr( 1, idStr.length() - 1 );
 
 if( m_appendToExisting )
 {
 aId = KIID();
 m_resetKIIDMap.insert( std::make_pair( idStr, aId ) );
 }
 else
 {
 aId = KIID( idStr );
 }
 
 return aId;
}