Tighten ownership model of PNS::ITEM.

In particular, ownership must be explicitly set.  It is
no longer inherited through copy/clone/etc.

pcbnew/router/pns_hole.cpp

@@ -39,7 +39,7 @@ HOLE::~HOLE()
 
 HOLE* HOLE::Clone() const
 {
-    HOLE* h = new HOLE( nullptr, m_holeShape->Clone() );
+    HOLE* h = new HOLE( m_holeShape->Clone() );
 
     h->SetLayers( Layers() );
     h->SetOwner( nullptr );
@@ -134,7 +134,7 @@ void HOLE::Move( const VECTOR2I& delta )
 HOLE* HOLE::MakeCircularHole( const VECTOR2I& pos, int radius )
 {
     auto circle = new SHAPE_CIRCLE( pos, radius );
-    auto hole = new HOLE( nullptr, circle );
+    auto hole = new HOLE( circle );
     hole->SetLayers( LAYER_RANGE( F_Cu, B_Cu ) );
     return hole;
 }

pcbnew/router/pns_hole.h

@@ -33,14 +33,18 @@ namespace PNS
 class HOLE : public ITEM
 {
 public:
-    HOLE( ITEM* aParentPadVia, SHAPE* aShape ) :
+    HOLE( SHAPE* aShape ) :
             ITEM( ITEM::HOLE_T ),
             m_holeShape( aShape ), 
-            m_parentPadVia( aParentPadVia )
+            m_parentPadVia( nullptr )
     {
     }
 
-    HOLE( const ITEM& aOther ) : ITEM( aOther ) {}
+    HOLE( const ITEM& aOther ) :
+            ITEM( aOther ),
+            m_parentPadVia( nullptr )
+    {
+    }
 
     virtual ~HOLE();
 

pcbnew/router/pns_item.h

@@ -128,7 +128,7 @@ public:
         m_movable = aOther.m_movable;
         m_kind = aOther.m_kind;
         m_parent = aOther.m_parent;
-        m_owner = aOther.m_owner; // fixme: wtf this was null?
+        m_owner = nullptr;
         m_marker = aOther.m_marker;
         m_rank = aOther.m_rank;
         m_routable = aOther.m_routable;

pcbnew/router/pns_joint.h

@@ -231,7 +231,7 @@ public:
         return m_tag.pos;
     }
 
-    int Net() const
+    int Net() const override
     {
         return m_tag.net;
     }

pcbnew/router/pns_kicad_iface.cpp

@@ -1098,12 +1098,7 @@ std::unique_ptr<PNS::SOLID> PNS_KICAD_IFACE_BASE::syncPad( PAD* aPad )
     solid->SetOffset( VECTOR2I( offset.x, offset.y ) );
 
     if( aPad->GetDrillSize().x > 0 )
-    {
+        solid->SetHole( new PNS::HOLE( aPad->GetEffectiveHoleShape()->Clone() ) );
-        SHAPE_SEGMENT* slot = (SHAPE_SEGMENT*) aPad->GetEffectiveHoleShape()->Clone();
-        PNS::HOLE*     hole = new PNS::HOLE( solid.get(), slot );
-
-        solid->SetHole( hole );
-    }
 
     // We generate a single SOLID for a pad, so we have to treat it as ALWAYS_FLASHED and then
     // perform layer-specific flashing tests internally.
@@ -1176,11 +1171,7 @@ std::unique_ptr<PNS::VIA> PNS_KICAD_IFACE_BASE::syncVia( PCB_VIA* aVia )
         via->Mark( PNS::MK_LOCKED );
 
     via->SetIsFree( aVia->GetIsFree() );
-
+    via->SetHole( PNS::HOLE::MakeCircularHole( aVia->GetPosition(), aVia->GetDrillValue() / 2 ) );
-    SHAPE*     holeShape = new SHAPE_CIRCLE( aVia->GetPosition(), aVia->GetDrillValue() / 2 );
-    PNS::HOLE* viaHole = new PNS::HOLE( via.get(), holeShape );
-
-    via->SetHole( viaHole );
 
     return via;
 }

pcbnew/router/pns_line.cpp

@@ -51,6 +51,7 @@ LINE::LINE( const LINE& aOther )
     {
         m_via = aOther.m_via->Clone();
         m_via->SetOwner( this );
+        m_via->SetNet( m_net );
     }
 
     m_marker = aOther.m_marker;
@@ -82,6 +83,7 @@ LINE& LINE::operator=( const LINE& aOther )
     {
         m_via = aOther.m_via->Clone();
         m_via->SetOwner( this );
+        m_via->SetNet( m_net );
     }
 
     m_marker = aOther.m_marker;
@@ -1267,11 +1269,7 @@ bool LINE::HasLockedSegments() const
 
 void LINE::Clear()
 {
-    if( m_via && m_via->BelongsTo( this ) )
+    RemoveVia();
-    {
-        delete m_via;
-        m_via = nullptr;
-    }
     m_line.Clear();
 }
 

pcbnew/router/pns_solid.h

@@ -113,19 +113,14 @@ public:
 
     virtual void SetHole( HOLE* aHole ) override
     {
-        if( m_hole )
+        if( m_hole && m_hole->BelongsTo( this ) )
-        {
+            delete m_hole;
-            assert( m_hole->Owner() == nullptr );
-        }
 
         m_hole = aHole;
-        m_hole->SetNet( Net() );
+        m_hole->SetParentPadVia( this );
         m_hole->SetOwner( this );
-
+        m_hole->SetLayers( m_layers ); // fixme: backdrill vias can have hole layer set different
-        if( m_hole )
+                                       // than copper layer set
-        {
-            m_hole->SetLayers( m_layers ); // fixme: backdrill vias can have hole layer set different than copper layer set
-        }
     }
 
     virtual bool HasHole() const override { return m_hole != nullptr; }

pcbnew/router/pns_via.h

@@ -54,12 +54,12 @@ public:
         LINKED_ITEM( VIA_T ),
         m_hole( nullptr )
     {
-        m_diameter = 2; // Dummy value
+        m_diameter = 2;     // Dummy value
-        m_drill = 0;
+        m_drill = 1;        // Dummy value
         m_viaType = VIATYPE::THROUGH;
         m_isFree = false;
         m_isVirtual = false;
-        SetHole( HOLE::MakeCircularHole( m_pos, m_diameter / 2 ) );
+        SetHole( HOLE::MakeCircularHole( m_pos, m_drill / 2 ) );
     }
 
     VIA( const VECTOR2I& aPos, const LAYER_RANGE& aLayers, int aDiameter, int aDrill,
@@ -100,9 +100,7 @@ public:
     virtual ~VIA()
     {
         if ( m_hole && m_hole->BelongsTo( this ) )
-	{
             delete m_hole;
-	}
     }
 
     static inline bool ClassOf( const ITEM* aItem )
@@ -116,6 +114,7 @@ public:
     {
         m_pos = aPos;
         m_shape.SetCenter( aPos );
+
         if( m_hole )
             m_hole->SetCenter( aPos );
     }
@@ -136,6 +135,7 @@ public:
     void SetDrill( int aDrill )
     {
         m_drill = aDrill;
+
         if( m_hole )
             m_hole->SetRadius( m_drill / 2 );
     }
@@ -171,19 +171,14 @@ public:
 
     virtual void SetHole( HOLE* aHole ) override
     {
-        if( m_hole && m_hole->Owner() == this )
+        if( m_hole && m_hole->BelongsTo( this ) )
-        {
             delete m_hole;
-        }
 
         m_hole = aHole;
         m_hole->SetParentPadVia( this );
         m_hole->SetOwner( this );
-
+        m_hole->SetLayers( m_layers ); // fixme: backdrill vias can have hole layer set different
-        if( m_hole )
+                                       // than copper layer set
-        {
-            m_hole->SetLayers( m_layers ); // fixme: backdrill vias can have hole layer set different than copper layer set
-        }
     }
 
     virtual bool HasHole() const override { return true; }