net_settings.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2020 CERN
 * Copyright (C) 2021-2022 KiCad Developers, see AUTHORS.txt for contributors.
 * @author Jon Evans <[email protected]>
 *
 * 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 3 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, see <http://www.gnu.org/licenses/>.
 */
 
#include <nlohmann/json.hpp>
 
#include <project/net_settings.h>
#include <settings/parameters.h>
#include <settings/json_settings_internals.h>
#include <settings/settings_manager.h>
#include <string_utils.h>
#include <base_units.h>
 
 
// const int netSettingsSchemaVersion = 0;
// const int netSettingsSchemaVersion = 1; // new overbar syntax
// const int netSettingsSchemaVersion = 2; // exclude buses from netclass members
const int netSettingsSchemaVersion = 3; // netclass assignment patterns
 
 
static std::optional<int> getInPcbUnits( const nlohmann::json& aObj, const std::string& aKey,
 std::optional<int> aDefault = std::optional<int>() )
{
 if( aObj.contains( aKey ) && aObj[aKey].is_number() )
 return pcbIUScale.mmToIU( aObj[aKey].get<double>() );
 else
 return aDefault;
};
 
 
static int getInSchUnits( const nlohmann::json& aObj, const std::string& aKey, int aDefault )
{
 if( aObj.contains( aKey ) && aObj[aKey].is_number() )
 return schIUScale.MilsToIU( aObj[aKey].get<double>() );
 else
 return aDefault;
};
 
 
NET_SETTINGS::NET_SETTINGS( JSON_SETTINGS* aParent, const std::string& aPath ) :
 NESTED_SETTINGS( "net_settings", netSettingsSchemaVersion, aParent, aPath )
{
 m_DefaultNetClass = std::make_shared<NETCLASS>( NETCLASS::Default );
 m_DefaultNetClass->SetDescription( _( "This is the default net class." ) );
 
 auto saveNetclass =
 []( nlohmann::json& json_array, const std::shared_ptr<NETCLASS>& nc )
 {
 // Note: we're in common/, but we do happen to know which of these
 // fields are used in which units system.
 nlohmann::json nc_json = {
 { "name", nc->GetName().ToUTF8() },
 { "wire_width", schIUScale.IUToMils( nc->GetWireWidth() ) },
 { "bus_width", schIUScale.IUToMils( nc->GetBusWidth() ) },
 { "line_style", nc->GetLineStyle() },
 { "schematic_color", nc->GetSchematicColor() },
 { "pcb_color", nc->GetPcbColor() }
 };
 
 auto saveInPcbUnits =
 []( nlohmann::json& json, const std::string& aKey, int aValue )
 {
 json.push_back( { aKey, pcbIUScale.IUTomm( aValue ) } );
 };
 
 if( nc->HasClearance() )
 saveInPcbUnits( nc_json, "clearance", nc->GetClearance() );
 
 if( nc->HasTrackWidth() )
 saveInPcbUnits( nc_json, "track_width", nc->GetTrackWidth() );
 
 if( nc->HasViaDiameter() )
 saveInPcbUnits( nc_json, "via_diameter", nc->GetViaDiameter() );
 
 if( nc->HasViaDrill() )
 saveInPcbUnits( nc_json, "via_drill", nc->GetViaDrill() );
 
 if( nc->HasuViaDiameter() )
 saveInPcbUnits( nc_json, "microvia_diameter", nc->GetuViaDiameter() );
 
 if( nc->HasuViaDrill() )
 saveInPcbUnits( nc_json, "microvia_drill", nc->GetuViaDrill() );
 
 if( nc->HasDiffPairWidth() )
 saveInPcbUnits( nc_json, "diff_pair_width", nc->GetDiffPairWidth() );
 
 if( nc->HasDiffPairGap() )
 saveInPcbUnits( nc_json, "diff_pair_gap", nc->GetDiffPairGap() );
 
 if( nc->HasDiffPairViaGap() )
 saveInPcbUnits( nc_json, "diff_pair_via_gap", nc->GetDiffPairViaGap() );
 
 json_array.push_back( nc_json );
 };
 
 auto readNetClass =
 []( const nlohmann::json& entry )
 {
 wxString name = entry["name"];
 
 std::shared_ptr<NETCLASS> nc = std::make_shared<NETCLASS>( name );
 
 if( auto value = getInPcbUnits( entry, "clearance" ) )
 nc->SetClearance( *value );
 
 if( auto value = getInPcbUnits( entry, "track_width" ) )
 nc->SetTrackWidth( *value );
 
 if( auto value = getInPcbUnits( entry, "via_diameter" ) )
 nc->SetViaDiameter( *value );
 
 if( auto value = getInPcbUnits( entry, "via_drill" ) )
 nc->SetViaDrill( *value );
 
 if( auto value = getInPcbUnits( entry, "microvia_diameter" ) )
 nc->SetuViaDiameter( *value );
 
 if( auto value = getInPcbUnits( entry, "microvia_drill" ) )
 nc->SetuViaDrill( *value );
 
 if( auto value = getInPcbUnits( entry, "diff_pair_width" ) )
 nc->SetDiffPairWidth( *value );
 
 if( auto value = getInPcbUnits( entry, "diff_pair_gap" ) )
 nc->SetDiffPairGap( *value );
 
 if( auto value = getInPcbUnits( entry, "diff_pair_via_gap" ) )
 nc->SetDiffPairViaGap( *value );
 
 nc->SetWireWidth( getInSchUnits( entry, "wire_width", nc->GetWireWidth() ) );
 nc->SetBusWidth( getInSchUnits( entry, "bus_width", nc->GetBusWidth() ) );
 
 if( entry.contains( "line_style" ) && entry["line_style"].is_number() )
 nc->SetLineStyle( entry["line_style"].get<int>() );
 
 if( entry.contains( "pcb_color" ) && entry["pcb_color"].is_string() )
 nc->SetPcbColor( entry["pcb_color"].get<KIGFX::COLOR4D>() );
 
 if( entry.contains( "schematic_color" )
 && entry["schematic_color"].is_string() )
 {
 nc->SetSchematicColor( entry["schematic_color"].get<KIGFX::COLOR4D>() );
 }
 
 return nc;
 };
 
 m_params.emplace_back( new PARAM_LAMBDA<nlohmann::json>( "classes",
 [&]() -> nlohmann::json
 {
 nlohmann::json ret = nlohmann::json::array();
 
 if( m_DefaultNetClass )
 saveNetclass( ret, m_DefaultNetClass );
 
  for( const auto& [ name, netclass ] : m_NetClasses )
 saveNetclass( ret, netclass );
 
 return ret;
 },
 [&]( const nlohmann::json& aJson )
 {
 if( !aJson.is_array() )
 return;
 
 m_NetClasses.clear();
 
 for( const nlohmann::json& entry : aJson )
 {
 if( !entry.is_object() || !entry.contains( "name" ) )
 continue;
 
 std::shared_ptr<NETCLASS> nc = readNetClass( entry );
 
 if( nc->GetName() == NETCLASS::Default )
 m_DefaultNetClass = nc;
 else
 m_NetClasses[ nc->GetName() ] = nc;
 }
 },
 {} ) );
 
 m_params.emplace_back( new PARAM_LAMBDA<nlohmann::json>( "net_colors",
 [&]() -> nlohmann::json
 {
 nlohmann::json ret = {};
 
 for( const auto& [ netname, color ] : m_NetColorAssignments )
 {
 std::string key( netname.ToUTF8() );
 ret[key] = color;
 }
 
 return ret;
 },
 [&]( const nlohmann::json& aJson )
 {
 if( !aJson.is_object() )
 return;
 
 m_NetColorAssignments.clear();
 
 for( const auto& pair : aJson.items() )
 {
 wxString key( pair.key().c_str(), wxConvUTF8 );
 m_NetColorAssignments[key] = pair.value().get<KIGFX::COLOR4D>();
 }
 },
 {} ) );
 
 m_params.emplace_back( new PARAM_LAMBDA<nlohmann::json>( "netclass_assignments",
 [&]() -> nlohmann::json
 {
 nlohmann::json ret = {};
 
 for( const auto& [ netname, netclassName ] : m_NetClassLabelAssignments )
 {
 std::string key( netname.ToUTF8() );
 ret[key] = netclassName;
 }
 
 return ret;
 },
 [&]( const nlohmann::json& aJson )
 {
 if( !aJson.is_object() )
 return;
 
 m_NetClassLabelAssignments.clear();
 
 for( const auto& pair : aJson.items() )
 {
 wxString key( pair.key().c_str(), wxConvUTF8 );
 m_NetClassLabelAssignments[key] = pair.value().get<wxString>();
 }
 },
 {} ) );
 
 m_params.emplace_back( new PARAM_LAMBDA<nlohmann::json>( "netclass_patterns",
 [&]() -> nlohmann::json
 {
 nlohmann::json ret = nlohmann::json::array();
 
 for( const auto& [ matcher, netclassName ] : m_NetClassPatternAssignments )
 {
 nlohmann::json pattern_json = {
 { "pattern", matcher->GetPattern().ToUTF8() },
 { "netclass", netclassName.ToUTF8() }
 };
 
 ret.push_back( pattern_json );
 }
 
 return ret;
 },
 [&]( const nlohmann::json& aJson )
 {
 if( !aJson.is_array() )
 return;
 
 m_NetClassPatternAssignments.clear();
 
 for( const nlohmann::json& entry : aJson )
 {
 if( !entry.is_object() )
 continue;
 
 if( entry.contains( "pattern" ) && entry["pattern"].is_string()
 && entry.contains( "netclass" ) && entry["netclass"].is_string() )
 {
 wxString pattern = entry["pattern"].get<wxString>();
 wxString netclass = entry["netclass"].get<wxString>();
 
 m_NetClassPatternAssignments.push_back(
 {
 std::make_unique<EDA_COMBINED_MATCHER>( pattern, CTX_NETCLASS ),
 netclass
 } );
 }
 }
 },
 {} ) );
 
 registerMigration( 0, 1, std::bind( &NET_SETTINGS::migrateSchema0to1, this ) );
 registerMigration( 2, 3, std::bind( &NET_SETTINGS::migrateSchema2to3, this ) );
}
 
 
NET_SETTINGS::~NET_SETTINGS()
{
 // Release early before destroying members
 if( m_parent )
 {
 m_parent->ReleaseNestedSettings( this );
 m_parent = nullptr;
 }
}
 
 
bool NET_SETTINGS::migrateSchema0to1()
{
 if( m_internals->contains( "classes" ) && m_internals->At( "classes" ).is_array() )
 {
 for( auto& netClass : m_internals->At( "classes" ).items() )
 {
 if( netClass.value().contains( "nets" ) && netClass.value()["nets"].is_array() )
 {
 nlohmann::json migrated = nlohmann::json::array();
 
 for( auto& net : netClass.value()["nets"].items() )
 migrated.push_back( ConvertToNewOverbarNotation( net.value().get<wxString>() ) );
 
 netClass.value()["nets"] = migrated;
 }
 }
 }
 
 return true;
}
 
 
bool NET_SETTINGS::migrateSchema2to3()
{
 if( m_internals->contains( "classes" ) && m_internals->At( "classes" ).is_array() )
 {
 nlohmann::json patterns = nlohmann::json::array();
 
 for( auto& netClass : m_internals->At( "classes" ).items() )
 {
 if( netClass.value().contains( "name" )
 && netClass.value().contains( "nets" )
 && netClass.value()["nets"].is_array() )
 {
 wxString netClassName = netClass.value()["name"].get<wxString>();
 
 for( auto& net : netClass.value()["nets"].items() )
 {
 nlohmann::json pattern_json = {
 { "pattern", net.value().get<wxString>() },
 { "netclass", netClassName }
 };
 
 patterns.push_back( pattern_json );
 }
 }
 }
 
 m_internals->SetFromString( "netclass_patterns", patterns );
 }
 
 return true;
}
 
 
std::shared_ptr<NETCLASS> NET_SETTINGS::GetEffectiveNetClass( const wxString& aNetName ) const
{
 auto getNetclass =
 [&]( const wxString& netclass )
 {
 auto ii = m_NetClasses.find( netclass );
 
 if( ii == m_NetClasses.end() )
 return m_DefaultNetClass;
 else
 return ii->second;
 };
 
 // <no net> is forced to be part of the Default netclass.
 if( aNetName.IsEmpty() )
 return m_DefaultNetClass;
 
 auto it = m_NetClassLabelAssignments.find( aNetName );
 
 if( it != m_NetClassLabelAssignments.end() )
 return getNetclass( it->second );
 
 for( const auto& [ matcher, netclassName ] : m_NetClassPatternAssignments )
 {
 int matches;
 int offset;
 
 if( matcher->Find( aNetName, matches, offset ) && offset == 0 )
 return getNetclass( netclassName );
 }
 
 return m_DefaultNetClass;
}
 
 
static bool isSuperSubOverbar( wxChar c )
{
 return c == '_' || c == '^' || c == '~';
}
 
 
bool NET_SETTINGS::ParseBusVector( const wxString& aBus, wxString* aName,
 std::vector<wxString>* aMemberList )
{
 auto isDigit = []( wxChar c )
 {
 static wxString digits( wxT( "0123456789" ) );
 return digits.Contains( c );
 };
 
 size_t busLen = aBus.length();
 size_t i = 0;
 wxString prefix;
 wxString suffix;
 wxString tmp;
 long begin = 0;
 long end = 0;
 int braceNesting = 0;
 
 prefix.reserve( busLen );
 
 // Parse prefix
 //
 for( ; i < busLen; ++i )
 {
 if( aBus[i] == '{' )
 {
 if( i > 0 && isSuperSubOverbar( aBus[i-1] ) )
 braceNesting++;
 else
 return false;
 }
 else if( aBus[i] == '}' )
 {
 braceNesting--;
 }
 
 if( aBus[i] == ' ' || aBus[i] == ']' )
 return false;
 
 if( aBus[i] == '[' )
 break;
 
 prefix += aBus[i];
 }
 
 // Parse start number
 //
 i++; // '[' character
 
 if( i >= busLen )
 return false;
 
 for( ; i < busLen; ++i )
 {
 if( aBus[i] == '.' && i + 1 < busLen && aBus[i+1] == '.' )
 {
 tmp.ToLong( &begin );
 i += 2;
 break;
 }
 
 if( !isDigit( aBus[i] ) )
 return false;
 
 tmp += aBus[i];
 }
 
 // Parse end number
 //
 tmp = wxEmptyString;
 
 if( i >= busLen )
 return false;
 
 for( ; i < busLen; ++i )
 {
 if( aBus[i] == ']' )
 {
 tmp.ToLong( &end );
 ++i;
 break;
 }
 
 if( !isDigit( aBus[i] ) )
 return false;
 
 tmp += aBus[i];
 }
 
 // Parse suffix
 //
 for( ; i < busLen; ++i )
 {
 if( aBus[i] == '}' )
 {
 braceNesting--;
 suffix += aBus[i];
 }
 else
 {
 return false;
 }
 }
 
 if( braceNesting != 0 )
 return false;
 
 if( begin == end )
 return false;
 else if( begin > end )
 std::swap( begin, end );
 
 if( aName )
 *aName = prefix;
 
 if( aMemberList )
 {
 for( long idx = begin; idx <= end; ++idx )
 {
 wxString str = prefix;
 str << idx;
 str << suffix;
 
 aMemberList->emplace_back( str );
 }
 }
 
 return true;
}
 
 
bool NET_SETTINGS::ParseBusGroup( const wxString& aGroup, wxString* aName,
 std::vector<wxString>* aMemberList )
{
 size_t groupLen = aGroup.length();
 size_t i = 0;
 wxString prefix;
 wxString tmp;
 int braceNesting = 0;
 
 prefix.reserve( groupLen );
 
 // Parse prefix
 //
 for( ; i < groupLen; ++i )
 {
 if( aGroup[i] == '{' )
 {
 if( i > 0 && isSuperSubOverbar( aGroup[i-1] ) )
 braceNesting++;
 else
 break;
 }
 else if( aGroup[i] == '}' )
 {
 braceNesting--;
 }
 
 if( aGroup[i] == ' ' || aGroup[i] == '[' || aGroup[i] == ']' )
 return false;
 
 prefix += aGroup[i];
 }
 
 if( braceNesting != 0 )
 return false;
 
 if( aName )
 *aName = prefix;
 
 // Parse members
 //
 i++; // '{' character
 
 if( i >= groupLen )
 return false;
 
 for( ; i < groupLen; ++i )
 {
 if( aGroup[i] == '{' )
 {
 if( i > 0 && isSuperSubOverbar( aGroup[i-1] ) )
 braceNesting++;
 else
 return false;
 }
 else if( aGroup[i] == '}' )
 {
 if( braceNesting )
 {
 braceNesting--;
 }
 else
 {
 if( aMemberList && !tmp.IsEmpty() )
 aMemberList->push_back( EscapeString( tmp, CTX_NETNAME ) );
 
 return true;
 }
 }
 
 // Commas aren't strictly legal, but we can be pretty sure what the author had in mind.
 if( aGroup[i] == ' ' || aGroup[i] == ',' )
 {
 if( aMemberList && !tmp.IsEmpty() )
 aMemberList->push_back( EscapeString( tmp, CTX_NETNAME ) );
 
 tmp.Clear();
 continue;
 }
 
 tmp += aGroup[i];
 }
 
 return false;
}