drc_test_provider_connectivity.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2004-2020 KiCad Developers.
 *
 * 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 <board.h>
#include <common.h>

#include <connectivity/connectivity_data.h>
#include <connectivity/connectivity_algo.h>

#include <drc/drc_engine.h>
#include <drc/drc_item.h>
#include <drc/drc_rule.h>
#include <drc/drc_test_provider.h>


/*
 Connectivity test provider. Not rule-driven.
 Errors generated:
 - DRCE_DANGLING_TRACK
 - DRCE_DANGLING_VIA
 - DRCE_ZONE_HAS_EMPTY_NET
*/

class DRC_TEST_PROVIDER_CONNECTIVITY : public DRC_TEST_PROVIDER
{
public:
 DRC_TEST_PROVIDER_CONNECTIVITY()
 {
 }

 virtual ~DRC_TEST_PROVIDER_CONNECTIVITY()
 {
 }

  virtual bool Run() override;

 virtual const wxString GetName() const override
 {
 return "connectivity";
 };

 virtual const wxString GetDescription() const override
 {
 return "Tests board connectivity";
 }

 virtual std::set<DRC_CONSTRAINT_T> GetConstraintTypes() const override;

 int GetNumPhases() const override;
};


bool DRC_TEST_PROVIDER_CONNECTIVITY::Run()
{
 if( !reportPhase( _( "Checking pad, via and zone connections..." ) ) )
 return false; // DRC cancelled

 BOARD* board = m_drcEngine->GetBoard();

 std::shared_ptr<CONNECTIVITY_DATA> connectivity = board->GetConnectivity();

 // Rebuild just in case. This really needs to be reliable.
 connectivity->Clear();
 connectivity->Build( board, m_drcEngine->GetProgressReporter() );

 int delta = 100; // This is the number of tests between 2 calls to the progress bar
 int ii = 0;
 int count = board->Tracks().size() + board->Zones().size();

 ii += count; // We gave half of this phase to CONNECTIVITY_DATA::Build()
 count += count;

 for( PCB_TRACK* track : board->Tracks() )
 {
 bool exceedT = m_drcEngine->IsErrorLimitExceeded( DRCE_DANGLING_TRACK );
 bool exceedV = m_drcEngine->IsErrorLimitExceeded( DRCE_DANGLING_VIA );

 if( exceedV && exceedT )
 break;
 else if( track->Type() == PCB_VIA_T && exceedV )
 continue;
 else if( track->Type() == PCB_TRACE_T && exceedT )
 continue;

 if( !reportProgress( ii++, count, delta ) )
 break;

 // Test for dangling items
 int code = track->Type() == PCB_VIA_T ? DRCE_DANGLING_VIA : DRCE_DANGLING_TRACK;
 wxPoint pos;

 if( connectivity->TestTrackEndpointDangling( track, &pos ) )
 {
 std::shared_ptr<DRC_ITEM> drcItem = DRC_ITEM::Create( code );
 drcItem->SetItems( track );
 reportViolation( drcItem, pos );
 }
 }

 /* test starved zones */
 for( ZONE* zone : board->Zones() )
 {
 if( m_drcEngine->IsErrorLimitExceeded( DRCE_ZONE_HAS_EMPTY_NET ) )
 break;

 if( !zone->IsOnCopperLayer() )
 continue;

 if( !reportProgress( ii++, count, delta ) )
 return false; // DRC cancelled

 int netcode = zone->GetNetCode();
 // a netcode < 0 or > 0 and no pad in net is a error or strange
 // perhaps a "dead" net, which happens when all pads in this net were removed
 // Remark: a netcode < 0 should not happen (this is more a bug somewhere)
 int pads_in_net = ( netcode > 0 ) ? connectivity->GetPadCount( netcode ) : 1;

 if( ( netcode < 0 ) || pads_in_net == 0 )
 {
 std::shared_ptr<DRC_ITEM> drcItem = DRC_ITEM::Create( DRCE_ZONE_HAS_EMPTY_NET );
 drcItem->SetItems( zone );
 reportViolation( drcItem, zone->GetPosition() );
 }
 }

 if( m_drcEngine->IsErrorLimitExceeded( DRCE_UNCONNECTED_ITEMS ) )
 return true; // continue with other tests

 if( !reportPhase( _( "Checking net connections..." ) ) )
 return false; // DRC cancelled

 connectivity->RecalculateRatsnest();
 std::vector<CN_EDGE> edges;
 connectivity->GetUnconnectedEdges( edges );

 delta = 250;
 ii = 0;
 count = edges.size();

 for( const CN_EDGE& edge : edges )
 {
 if( m_drcEngine->IsErrorLimitExceeded( DRCE_UNCONNECTED_ITEMS ) )
 break;

 if( !reportProgress( ii++, count, delta ) )
 return false; // DRC cancelled

 std::shared_ptr<DRC_ITEM> drcItem = DRC_ITEM::Create( DRCE_UNCONNECTED_ITEMS );
 drcItem->SetItems( edge.GetSourceNode()->Parent(), edge.GetTargetNode()->Parent() );
 reportViolation( drcItem, (wxPoint) edge.GetSourceNode()->Pos() );
 }

 reportRuleStatistics();

 return true;
}


int DRC_TEST_PROVIDER_CONNECTIVITY::GetNumPhases() const
{
 return 3;
}


std::set<DRC_CONSTRAINT_T> DRC_TEST_PROVIDER_CONNECTIVITY::GetConstraintTypes() const
{
 return {};
}


namespace detail
{
static DRC_REGISTER_TEST_PROVIDER<DRC_TEST_PROVIDER_CONNECTIVITY> dummy;
}