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kicad/eeschema/erc.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2015 Jean-Pierre Charras, jp.charras at wanadoo.fr
* Copyright (C) 2011-2016 Wayne Stambaugh <stambaughw@verizon.net>
* Copyright (C) 1992-2016 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
*/
/**
* @file erc.cpp
* @brief Electrical Rules Check implementation.
*/
#include <fctsys.h>
#include <sch_draw_panel.h>
#include <kicad_string.h>
#include <sch_edit_frame.h>
#include <netlist_object.h>
#include <lib_pin.h>
#include <erc.h>
#include <sch_marker.h>
#include <sch_sheet.h>
#include <sch_reference_list.h>
#include <schematic.h>
#include <wx/ffile.h>
/* ERC tests :
* 1 - conflicts between connected pins ( example: 2 connected outputs )
* 2 - minimal connections requirements ( 1 input *must* be connected to an
* output, or a passive pin )
*/
/*
* Minimal ERC requirements:
* All pins *must* be connected (except ELECTRICAL_PINTYPE::PT_NC).
* When a pin is not connected in schematic, the user must place a "non
* connected" symbol to this pin.
* This ensures a forgotten connection will be detected.
*/
/* Messages for conflicts :
* ELECTRICAL_PINTYPE::PT_INPUT, ELECTRICAL_PINTYPE::PT_OUTPUT, ELECTRICAL_PINTYPE:PT_:BIDI, ELECTRICAL_PINTYPE::PT_TRISTATE, ELECTRICAL_PINTYPE::PT_PASSIVE,
* ELECTRICAL_PINTYPE::PT_UNSPECIFIED, ELECTRICAL_PINTYPE::PT_POWER_IN, ELECTRICAL_PINTYPE::PT_POWER_OUT, ELECTRICAL_PINTYPE::PT_OPENCOLLECTOR,
* ELECTRICAL_PINTYPE::PT_OPENEMITTER, ELECTRICAL_PINTYPE::PT_NC
* These messages are used to show the ERC matrix in ERC dialog
*/
// Messages for matrix rows:
const wxString CommentERC_H[] =
{
_( "Input Pin" ),
_( "Output Pin" ),
_( "Bidirectional Pin" ),
_( "Tri-State Pin" ),
_( "Passive Pin" ),
_( "Unspecified Pin" ),
_( "Power Input Pin" ),
_( "Power Output Pin" ),
_( "Open Collector" ),
_( "Open Emitter" ),
_( "No Connection" )
};
// Messages for matrix columns
const wxString CommentERC_V[] =
{
_( "Input Pin" ),
_( "Output Pin" ),
_( "Bidirectional Pin" ),
_( "Tri-State Pin" ),
_( "Passive Pin" ),
_( "Unspecified Pin" ),
_( "Power Input Pin" ),
_( "Power Output Pin" ),
_( "Open Collector" ),
_( "Open Emitter" ),
_( "No Connection" )
};
/* Look up table which gives the diag for a pair of connected pins
* Can be modified by ERC options.
* at start up: must be loaded by DefaultDiagErc
* Can be modified in dialog ERC
*/
int PinMap[ELECTRICAL_PINTYPES_TOTAL][ELECTRICAL_PINTYPES_TOTAL];
/**
* Default Look up table which gives the ERC error level for a pair of connected pins
* Same as DiagErc, but cannot be modified.
* Used to init or reset DiagErc
* note also, to avoid inconsistancy:
* DefaultDiagErc[i][j] = DefaultDiagErc[j][i]
*/
int DefaultPinMap[ELECTRICAL_PINTYPES_TOTAL][ELECTRICAL_PINTYPES_TOTAL] =
{
/* I, O, Bi, 3S, Pas, UnS, PwrI, PwrO, OC, OE, NC */
/* I */ { OK, OK, OK, OK, OK, WAR, OK, OK, OK, OK, ERR },
/* O */ { OK, ERR, OK, WAR, OK, WAR, OK, ERR, ERR, ERR, ERR },
/* Bi*/ { OK, OK, OK, OK, OK, WAR, OK, WAR, OK, WAR, ERR },
/* 3S*/ { OK, WAR, OK, OK, OK, WAR, WAR, ERR, WAR, WAR, ERR },
/*Pas*/ { OK, OK, OK, OK, OK, WAR, OK, OK, OK, OK, ERR },
/*UnS */ { WAR, WAR, WAR, WAR, WAR, WAR, WAR, WAR, WAR, WAR, ERR },
/*PwrI*/ { OK, OK, OK, WAR, OK, WAR, OK, OK, OK, OK, ERR },
/*PwrO*/ { OK, ERR, WAR, ERR, OK, WAR, OK, ERR, ERR, ERR, ERR },
/* OC */ { OK, ERR, OK, WAR, OK, WAR, OK, ERR, OK, OK, ERR },
/* OE */ { OK, ERR, WAR, WAR, OK, WAR, OK, ERR, OK, OK, ERR },
/* NC */ { ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR, ERR }
};
/**
* Look up table which gives the minimal drive for a pair of connected pins on
* a net.
* <p>
* The initial state of a net is NOC (Net with No Connection). It can be updated to
* NPI (Pin Isolated), NET_NC (Net with a no connect symbol), NOD (Not Driven) or DRV
* (DRIven). It can be updated to NET_NC with no error only if there is only one pin
* in net. Nets are OK when their final state is NET_NC or DRV. Nets with the state
* NOD have no valid source signal.
*/
static int MinimalReq[ELECTRICAL_PINTYPES_TOTAL][ELECTRICAL_PINTYPES_TOTAL] =
{
/* In Out, Bi, 3S, Pas, UnS, PwrI,PwrO,OC, OE, NC */
/* In*/ { NOD, DRV, DRV, DRV, DRV, DRV, NOD, DRV, DRV, DRV, NPI },
/*Out*/ { DRV, DRV, DRV, DRV, DRV, DRV, DRV, DRV, DRV, DRV, NPI },
/* Bi*/ { DRV, DRV, DRV, DRV, DRV, DRV, NOD, DRV, DRV, DRV, NPI },
/* 3S*/ { DRV, DRV, DRV, DRV, DRV, DRV, NOD, DRV, DRV, DRV, NPI },
/*Pas*/ { DRV, DRV, DRV, DRV, DRV, DRV, NOD, DRV, DRV, DRV, NPI },
/*UnS*/ { DRV, DRV, DRV, DRV, DRV, DRV, NOD, DRV, DRV, DRV, NPI },
/*PwrI*/ { NOD, DRV, NOD, NOD, NOD, NOD, NOD, DRV, NOD, NOD, NPI },
/*PwrO*/ { DRV, DRV, DRV, DRV, DRV, DRV, DRV, DRV, DRV, DRV, NPI },
/* OC*/ { DRV, DRV, DRV, DRV, DRV, DRV, NOD, DRV, DRV, DRV, NPI },
/* OE*/ { DRV, DRV, DRV, DRV, DRV, DRV, NOD, DRV, DRV, DRV, NPI },
/* NC*/ { NPI, NPI, NPI, NPI, NPI, NPI, NPI, NPI, NPI, NPI, NPI }
};
int TestDuplicateSheetNames( SCHEMATIC* aSchematic, bool aCreateMarker )
{
SCH_SCREEN* screen;
int err_count = 0;
SCH_SCREENS screenList( aSchematic->Root() );
for( screen = screenList.GetFirst(); screen != NULL; screen = screenList.GetNext() )
{
std::vector<SCH_SHEET*> list;
for( SCH_ITEM* item : screen->Items().OfType( SCH_SHEET_T ) )
list.push_back( static_cast<SCH_SHEET*>( item ) );
for( size_t i = 0; i < list.size(); i++ )
{
SCH_SHEET* item = list[i];
for( size_t j = i + 1; j < list.size(); j++ )
{
SCH_SHEET* test_item = list[j];
// We have found a second sheet: compare names
// we are using case insensitive comparison to avoid mistakes between
// similar names like Mysheet and mysheet
if( item->GetName().CmpNoCase( test_item->GetName() ) == 0 )
{
if( aCreateMarker )
{
ERC_ITEM* ercItem = new ERC_ITEM( ERCE_DUPLICATE_SHEET_NAME );
ercItem->SetItems( item, test_item );
SCH_MARKER* marker = new SCH_MARKER( ercItem, item->GetPosition() );
screen->Append( marker );
}
err_count++;
}
}
}
}
return err_count;
}
void TestTextVars( SCHEMATIC* aSchematic )
{
SCH_SCREENS screens( aSchematic->Root() );
for( SCH_SCREEN* screen = screens.GetFirst(); screen != NULL; screen = screens.GetNext() )
{
for( SCH_ITEM* item : screen->Items().OfType( SCH_LOCATE_ANY_T ) )
{
if( item->Type() == SCH_COMPONENT_T )
{
SCH_COMPONENT* component = static_cast<SCH_COMPONENT*>( item );
for( SCH_FIELD& field : component->GetFields() )
{
if( field.GetShownText().Matches( wxT( "*${*}*" ) ) )
{
wxPoint pos = field.GetPosition() - component->GetPosition();
pos = component->GetTransform().TransformCoordinate( pos );
pos += component->GetPosition();
ERC_ITEM* ercItem = new ERC_ITEM( ERCE_UNRESOLVED_VARIABLE );
ercItem->SetItems( &field );
SCH_MARKER* marker = new SCH_MARKER( ercItem, pos );
screen->Append( marker );
}
}
}
else if( item->Type() == SCH_SHEET_T )
{
SCH_SHEET* sheet = static_cast<SCH_SHEET*>( item );
for( SCH_FIELD& field : sheet->GetFields() )
{
if( field.GetShownText().Matches( wxT( "*${*}*" ) ) )
{
ERC_ITEM* ercItem = new ERC_ITEM( ERCE_UNRESOLVED_VARIABLE );
ercItem->SetItems( &field );
SCH_MARKER* marker = new SCH_MARKER( ercItem, field.GetPosition() );
screen->Append( marker );
}
}
for( SCH_SHEET_PIN* pin : static_cast<SCH_SHEET*>( item )->GetPins() )
{
if( pin->GetShownText().Matches( wxT( "*${*}*" ) ) )
{
ERC_ITEM* ercItem = new ERC_ITEM( ERCE_UNRESOLVED_VARIABLE );
ercItem->SetItems( pin );
SCH_MARKER* marker = new SCH_MARKER( ercItem, pin->GetPosition() );
screen->Append( marker );
}
}
}
else if( SCH_TEXT* text = dynamic_cast<SCH_TEXT*>( item ) )
{
if( text->GetShownText().Matches( wxT( "*${*}*" ) ) )
{
ERC_ITEM* ercItem = new ERC_ITEM( ERCE_UNRESOLVED_VARIABLE );
ercItem->SetItems( text );
SCH_MARKER* marker = new SCH_MARKER( ercItem, text->GetPosition() );
screen->Append( marker );
}
}
}
}
}
int TestConflictingBusAliases( SCHEMATIC* aSchematic )
{
wxString msg;
int err_count = 0;
SCH_SCREENS screens( aSchematic->Root() );
std::vector< std::shared_ptr<BUS_ALIAS> > aliases;
for( SCH_SCREEN* screen = screens.GetFirst(); screen != NULL; screen = screens.GetNext() )
{
std::unordered_set< std::shared_ptr<BUS_ALIAS> > screen_aliases = screen->GetBusAliases();
for( const std::shared_ptr<BUS_ALIAS>& alias : screen_aliases )
{
for( const std::shared_ptr<BUS_ALIAS>& test : aliases )
{
if( alias->GetName() == test->GetName() && alias->Members() != test->Members() )
{
msg.Printf( _( "Bus alias %s has conflicting definitions on %s and %s" ),
alias->GetName(),
alias->GetParent()->GetFileName(),
test->GetParent()->GetFileName() );
ERC_ITEM* ercItem = new ERC_ITEM( ERCE_BUS_ALIAS_CONFLICT );
ercItem->SetErrorMessage( msg );
SCH_MARKER* marker = new SCH_MARKER( ercItem, wxPoint() );
test->GetParent()->Append( marker );
++err_count;
}
}
}
aliases.insert( aliases.end(), screen_aliases.begin(), screen_aliases.end() );
}
return err_count;
}
int TestMultiunitFootprints( const SCH_SHEET_LIST& aSheetList )
{
int errors = 0;
std::map<wxString, LIB_ID> footprints;
SCH_MULTI_UNIT_REFERENCE_MAP refMap;
aSheetList.GetMultiUnitComponents( refMap, true );
for( auto& component : refMap )
{
auto& refList = component.second;
if( refList.GetCount() == 0 )
{
wxFAIL; // it should not happen
continue;
}
// Reference footprint
SCH_COMPONENT* unit = nullptr;
wxString unitName;
wxString unitFP;
for( unsigned i = 0; i < component.second.GetCount(); ++i )
{
SCH_SHEET_PATH sheetPath = refList.GetItem( i ).GetSheetPath();
unitFP = refList.GetItem( i ).GetComp()->GetField( FOOTPRINT )->GetText();
if( !unitFP.IsEmpty() )
{
unit = refList.GetItem( i ).GetComp();
unitName = unit->GetRef( &sheetPath, true );
break;
}
}
for( unsigned i = 0; i < component.second.GetCount(); ++i )
{
SCH_REFERENCE& secondRef = refList.GetItem( i );
SCH_COMPONENT* secondUnit = secondRef.GetComp();
wxString secondName = secondUnit->GetRef( &secondRef.GetSheetPath(), true );
const wxString secondFp = secondUnit->GetField( FOOTPRINT )->GetText();
wxString msg;
if( !secondFp.IsEmpty() && unitFP != secondFp )
{
msg.Printf( _( "Different footprints assigned to %s and %s" ),
unitName, secondName );
ERC_ITEM* ercItem = new ERC_ITEM( ERCE_DIFFERENT_UNIT_FP );
ercItem->SetErrorMessage( msg );
ercItem->SetItems( unit, secondUnit );
SCH_MARKER* marker = new SCH_MARKER( ercItem, secondUnit->GetPosition() );
secondRef.GetSheetPath().LastScreen()->Append( marker );
++errors;
}
}
}
return errors;
}
void Diagnose( NETLIST_OBJECT* aNetItemRef, NETLIST_OBJECT* aNetItemTst, int aMinConn, int aDiag )
{
if( aDiag == OK || aMinConn < 1 || aNetItemRef->m_Type != NETLIST_ITEM::PIN )
return;
SCH_PIN* pin = static_cast<SCH_PIN*>( aNetItemRef->m_Comp );
if( aNetItemTst == NULL)
{
if( aMinConn == NOD ) /* Nothing driving the net. */
{
ERC_ITEM* ercItem = new ERC_ITEM( ERCE_PIN_NOT_DRIVEN );
ercItem->SetItems( pin );
SCH_MARKER* marker = new SCH_MARKER( ercItem, aNetItemRef->m_Start );
aNetItemRef->m_SheetPath.LastScreen()->Append( marker );
return;
}
}
if( aNetItemTst && aNetItemTst->m_Type == NETLIST_ITEM::PIN ) /* Error between 2 pins */
{
ERC_ITEM* ercItem = new ERC_ITEM( aDiag == ERR ? ERCE_PIN_TO_PIN_ERROR
: ERCE_PIN_TO_PIN_WARNING );
ercItem->SetItems( pin, static_cast<SCH_PIN*>( aNetItemTst->m_Comp ) );
SCH_MARKER* marker = new SCH_MARKER( ercItem, aNetItemRef->m_Start );
aNetItemRef->m_SheetPath.LastScreen()->Append( marker );
}
}
void TestOthersItems( NETLIST_OBJECT_LIST* aList, unsigned aNetItemRef, unsigned aNetStart,
int* aMinConnexion )
{
unsigned netItemTst = aNetStart;
ELECTRICAL_PINTYPE jj;
int erc = OK;
/* Analysis of the table of connections. */
ELECTRICAL_PINTYPE ref_elect_type = aList->GetItem( aNetItemRef )->m_ElectricalPinType;
int local_minconn = NOC;
if( ref_elect_type == ELECTRICAL_PINTYPE::PT_NC )
local_minconn = NPI;
/* Test pins connected to NetItemRef */
for( ; ; netItemTst++ )
{
if( aNetItemRef == netItemTst )
continue;
if( netItemTst < aList->size() )
{
ELECTRICAL_PINTYPE test_elect_type = aList->GetItem( netItemTst )->m_ElectricalPinType;
erc = PinMap[static_cast<int>( ref_elect_type )][static_cast<int>(test_elect_type )];
}
if( erc != OK )
Diagnose( aList->GetItem( aNetItemRef ), aList->GetItem( netItemTst ), 1, erc );
// We examine only a given net. We stop the search if the net changes
if( ( netItemTst >= aList->size() ) // End of list
|| ( aList->GetItemNet( aNetItemRef ) !=
aList->GetItemNet( netItemTst ) ) ) // End of net
{
/* End net code found: minimum connection test. */
if( ( *aMinConnexion < NET_NC ) && ( local_minconn < NET_NC ) )
{
/* Not connected or not driven pin. */
bool seterr = true;
if( local_minconn == NOC && aList->GetItemType( aNetItemRef ) == NETLIST_ITEM::PIN )
{
/* This pin is not connected: for multiple part per
* package, and duplicated pin,
* search for another instance of this pin
* this will be flagged only if all instances of this pin
* are not connected
* TODO test also if instances connected are connected to
* the same net
*/
for( unsigned duplicate = 0; duplicate < aList->size(); duplicate++ )
{
if( aList->GetItemType( duplicate ) != NETLIST_ITEM::PIN )
continue;
if( duplicate == aNetItemRef )
continue;
if( aList->GetItem( aNetItemRef )->m_PinNum !=
aList->GetItem( duplicate )->m_PinNum )
continue;
if( ( (SCH_COMPONENT*) aList->GetItem( aNetItemRef )->
m_Link )->GetRef( &aList->GetItem( aNetItemRef )-> m_SheetPath ) !=
( (SCH_COMPONENT*) aList->GetItem( duplicate )->m_Link )
->GetRef( &aList->GetItem( duplicate )->m_SheetPath ) )
continue;
// Same component and same pin. Do dot create error for this pin
// if the other pin is connected (i.e. if duplicate net has another
// item)
if( (duplicate > 0)
&& ( aList->GetItemNet( duplicate ) ==
aList->GetItemNet( duplicate - 1 ) ) )
seterr = false;
if( (duplicate < aList->size() - 1)
&& ( aList->GetItemNet( duplicate ) ==
aList->GetItemNet( duplicate + 1 ) ) )
seterr = false;
}
}
if( seterr )
Diagnose( aList->GetItem( aNetItemRef ), NULL, local_minconn, WAR );
*aMinConnexion = DRV; // inhibiting other messages of this
// type for the net.
}
return;
}
switch( aList->GetItemType( netItemTst ) )
{
case NETLIST_ITEM::ITEM_UNSPECIFIED:
case NETLIST_ITEM::SEGMENT:
case NETLIST_ITEM::BUS:
case NETLIST_ITEM::JUNCTION:
case NETLIST_ITEM::LABEL:
case NETLIST_ITEM::HIERLABEL:
case NETLIST_ITEM::BUSLABELMEMBER:
case NETLIST_ITEM::HIERBUSLABELMEMBER:
case NETLIST_ITEM::SHEETBUSLABELMEMBER:
case NETLIST_ITEM::SHEETLABEL:
case NETLIST_ITEM::GLOBLABEL:
case NETLIST_ITEM::GLOBBUSLABELMEMBER:
case NETLIST_ITEM::PINLABEL:
break;
case NETLIST_ITEM::NOCONNECT:
local_minconn = std::max( NET_NC, local_minconn );
break;
case NETLIST_ITEM::PIN:
jj = aList->GetItem( netItemTst )->m_ElectricalPinType;
local_minconn = std::max(
MinimalReq[static_cast<int>( ref_elect_type )][static_cast<int>( jj )],
local_minconn );
if( netItemTst <= aNetItemRef )
break;
if( erc == OK )
{
erc = PinMap[static_cast<int>( ref_elect_type )][static_cast<int>( jj )];
if( erc != OK )
{
if( aList->GetConnectionType( netItemTst ) == NET_CONNECTION::UNCONNECTED )
{
aList->SetConnectionType( netItemTst,
NET_CONNECTION::NOCONNECT_SYMBOL_PRESENT );
}
}
}
break;
}
}
}
// this code try to detect similar labels, i.e. labels which are identical
// when they are compared using case insensitive coparisons.
// A helper struct to compare NETLIST_OBJECT items by sheetpath and label texts
// for a std::set<NETLIST_OBJECT*> container
// the full text is "sheetpath+label" for local labels and "label" for global labels
struct compare_labels
{
bool operator() ( const NETLIST_OBJECT* lab1, const NETLIST_OBJECT* lab2 ) const
{
wxString str1 = lab1->m_SheetPath.PathAsString() + lab1->m_Label;
wxString str2 = lab2->m_SheetPath.PathAsString() + lab2->m_Label;
return str1.Cmp( str2 ) < 0;
}
};
struct compare_label_names
{
bool operator() ( const NETLIST_OBJECT* lab1, const NETLIST_OBJECT* lab2 ) const
{
return lab1->m_Label.Cmp( lab2->m_Label ) < 0;
}
};
struct compare_paths
{
bool operator() ( const NETLIST_OBJECT* lab1, const NETLIST_OBJECT* lab2 ) const
{
return lab1->m_SheetPath.Path() < lab2->m_SheetPath.Path();
}
};
// Helper functions to build the warning messages about Similar Labels:
static int countIndenticalLabels( std::vector<NETLIST_OBJECT*>& aList, NETLIST_OBJECT* aRef );
static void SimilarLabelsDiagnose( NETLIST_OBJECT* aItemA, NETLIST_OBJECT* aItemB );
void NETLIST_OBJECT_LIST::TestforSimilarLabels()
{
// Similar labels which are different when using case sensitive comparisons
// but are equal when using case insensitive comparisons
// list of all labels (used the better item to build diag messages)
std::vector<NETLIST_OBJECT*> fullLabelList;
// list of all labels , each label appears only once (used to to detect similar labels)
std::set<NETLIST_OBJECT*, compare_labels> uniqueLabelList;
wxString msg;
// Build a list of differents labels. If inside a given sheet there are
// more than one given label, only one label is stored.
// not also the sheet labels are not taken in account for 2 reasons:
// * they are in the root sheet but they are seen only from the child sheet
// * any mismatch between child sheet hierarchical labels and the sheet label
// already detected by ERC
for( unsigned netItem = 0; netItem < size(); ++netItem )
{
switch( GetItemType( netItem ) )
{
case NETLIST_ITEM::LABEL:
case NETLIST_ITEM::BUSLABELMEMBER:
case NETLIST_ITEM::PINLABEL:
case NETLIST_ITEM::GLOBBUSLABELMEMBER:
case NETLIST_ITEM::HIERLABEL:
case NETLIST_ITEM::HIERBUSLABELMEMBER:
case NETLIST_ITEM::GLOBLABEL:
// add this label in lists
uniqueLabelList.insert( GetItem( netItem ) );
fullLabelList.push_back( GetItem( netItem ) );
break;
case NETLIST_ITEM::SHEETLABEL:
case NETLIST_ITEM::SHEETBUSLABELMEMBER:
default:
break;
}
}
// build global labels and compare
std::set<NETLIST_OBJECT*, compare_label_names> loc_labelList;
for( NETLIST_OBJECT* label : uniqueLabelList )
{
if( label->IsLabelGlobal() )
loc_labelList.insert( label );
}
// compare global labels (same label names appears only once in list)
for( auto it = loc_labelList.begin(); it != loc_labelList.end(); ++it )
{
auto it_aux = it;
for( ++it_aux; it_aux != loc_labelList.end(); ++it_aux )
{
if( (*it)->m_Label.CmpNoCase( (*it_aux)->m_Label ) == 0 )
{
// Create new marker for ERC.
int cntA = countIndenticalLabels( fullLabelList, *it );
int cntB = countIndenticalLabels( fullLabelList, *it_aux );
if( cntA <= cntB )
SimilarLabelsDiagnose( (*it), (*it_aux) );
else
SimilarLabelsDiagnose( (*it_aux), (*it) );
}
}
}
// Build paths list
std::set<NETLIST_OBJECT*, compare_paths> pathsList;
for( NETLIST_OBJECT* label : uniqueLabelList )
pathsList.insert( label );
// Examine each label inside a sheet path:
for( NETLIST_OBJECT* candidate : pathsList )
{
loc_labelList.clear();
for( NETLIST_OBJECT* uniqueLabel : uniqueLabelList)
{
if( candidate->m_SheetPath.Path() == uniqueLabel->m_SheetPath.Path() )
loc_labelList.insert( uniqueLabel );
}
// at this point, loc_labelList contains labels of the current sheet path.
// Detect similar labels (same label names appears only once in list)
for( auto ref_it = loc_labelList.begin(); ref_it != loc_labelList.end(); ++ref_it )
{
NETLIST_OBJECT* ref_item = *ref_it;
auto it_aux = ref_it;
for( ++it_aux; it_aux != loc_labelList.end(); ++it_aux )
{
// global label versus global label was already examined.
// here, at least one label must be local
if( ref_item->IsLabelGlobal() && ( *it_aux )->IsLabelGlobal() )
continue;
if( ref_item->m_Label.CmpNoCase( ( *it_aux )->m_Label ) == 0 )
{
// Create new marker for ERC.
int cntA = countIndenticalLabels( fullLabelList, ref_item );
int cntB = countIndenticalLabels( fullLabelList, *it_aux );
if( cntA <= cntB )
SimilarLabelsDiagnose( ref_item, ( *it_aux ) );
else
SimilarLabelsDiagnose( ( *it_aux ), ref_item );
}
}
}
}
}
// Helper function: count the number of labels identical to aLabel
// for global label: global labels in the full project
// for local label: all labels in the current sheet
static int countIndenticalLabels( std::vector<NETLIST_OBJECT*>& aList, NETLIST_OBJECT* aRef )
{
int count = 0;
if( aRef->IsLabelGlobal() )
{
for( NETLIST_OBJECT* i : aList )
{
if( i->IsLabelGlobal() && i->m_Label == aRef->m_Label )
count++;
}
}
else
{
for( NETLIST_OBJECT* i : aList )
{
if( i->m_Label == aRef->m_Label && i->m_SheetPath.Path() == aRef->m_SheetPath.Path() )
count++;
}
}
return count;
}
// Helper function: creates a marker for similar labels ERC warning
static void SimilarLabelsDiagnose( NETLIST_OBJECT* aItemA, NETLIST_OBJECT* aItemB )
{
ERC_ITEM* ercItem = new ERC_ITEM( ERCE_SIMILAR_LABELS );
ercItem->SetItems( aItemA->m_Comp, aItemB->m_Comp );
SCH_MARKER* marker = new SCH_MARKER( ercItem, aItemA->m_Start );
aItemA->m_SheetPath.LastScreen()->Append( marker );
}
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