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CONNECTION_GRAPH Class Reference

Calculate the connectivity of a schematic and generates netlists. More...

#include <connection_graph.h>

Public Member Functions

 CONNECTION_GRAPH (SCHEMATIC *aSchematic=nullptr)
 
 ~CONNECTION_GRAPH ()
 
void Reset ()
 
void SetSchematic (SCHEMATIC *aSchematic)
 
void SetLastCodes (const CONNECTION_GRAPH *aOther)
 
void Recalculate (const SCH_SHEET_LIST &aSheetList, bool aUnconditional=false, std::function< void(SCH_ITEM *)> *aChangedItemHandler=nullptr)
 Update the connection graph for the given list of sheets.
 
std::shared_ptr< BUS_ALIASGetBusAlias (const wxString &aName)
 Return a bus alias pointer for the given name if it exists (from cache)
 
std::vector< const CONNECTION_SUBGRAPH * > GetBusesNeedingMigration ()
 Determine which subgraphs have more than one conflicting bus label.
 
int RunERC ()
 Run electrical rule checks on the connectivity graph.
 
const NET_MAPGetNetMap () const
 
CONNECTION_SUBGRAPHFindSubgraphByName (const wxString &aNetName, const SCH_SHEET_PATH &aPath)
 Return the subgraph for a given net name on a given sheet.
 
CONNECTION_SUBGRAPHFindFirstSubgraphByName (const wxString &aNetName)
 Retrieve a subgraph for the given net name, if one exists.
 
CONNECTION_SUBGRAPHGetSubgraphForItem (SCH_ITEM *aItem)
 
const std::vector< CONNECTION_SUBGRAPH * > GetAllSubgraphs (const wxString &aNetName) const
 
wxString GetResolvedSubgraphName (const CONNECTION_SUBGRAPH *aSubGraph) const
 Return the fully-resolved netname for a given subgraph.
 
std::set< std::pair< SCH_SHEET_PATH, SCH_ITEM * > > ExtractAffectedItems (const std::set< SCH_ITEM * > &aItems)
 For a set of items, this will remove the connected items and their associated data including subgraphs and generated codes from the connection graph.
 
void Merge (CONNECTION_GRAPH &aGraph)
 Combine the input graph contents into the current graph.
 
void RemoveItem (SCH_ITEM *aItem)
 

Private Member Functions

void updateItemConnectivity (const SCH_SHEET_PATH &aSheet, const std::vector< SCH_ITEM * > &aItemList)
 Update the graphical connectivity between items (i.e.
 
void buildConnectionGraph (std::function< void(SCH_ITEM *)> *aChangedItemHandler, bool aUnconditional)
 Generate the connection graph (after all item connectivity has been updated).
 
void buildItemSubGraphs ()
 Generate individual item subgraphs on a per-sheet basis.
 
void resolveAllDrivers ()
 Find all subgraphs in the connection graph and calls ResolveDrivers() in parallel.
 
void collectAllDriverValues ()
 Map the driver values for each subgraph.
 
void generateGlobalPowerPinSubGraphs ()
 Iterate through the global power pins to collect the global labels as drivers.
 
void generateBusAliasMembers ()
 Iterate through labels to create placeholders for bus elements.
 
void processSubGraphs ()
 Process all subgraphs to assign netcodes and merge subgraphs based on labels.
 
int assignNewNetCode (SCH_CONNECTION &aConnection)
 Helper to assign a new net code to a connection.
 
int getOrCreateNetCode (const wxString &aNetName)
 
void assignNetCodesToBus (SCH_CONNECTION *aConnection)
 Ensure all members of the bus connection have a valid net code assigned.
 
void propagateToNeighbors (CONNECTION_SUBGRAPH *aSubgraph, bool aForce)
 Update all neighbors of a subgraph with this one's connectivity info.
 
void removeSubgraphs (std::set< CONNECTION_SUBGRAPH * > &aSubgraphs)
 Remove references to the given subgraphs from all structures in the connection graph.
 
std::shared_ptr< SCH_CONNECTIONgetDefaultConnection (SCH_ITEM *aItem, CONNECTION_SUBGRAPH *aSubgraph)
 Build a new default connection for the given item based on its properties.
 
void recacheSubgraphName (CONNECTION_SUBGRAPH *aSubgraph, const wxString &aOldName)
 
bool ercCheckMultipleDrivers (const CONNECTION_SUBGRAPH *aSubgraph)
 If the subgraph has multiple drivers of equal priority that are graphically connected, ResolveDrivers() will have stored the second driver for use by this function, which actually creates the markers.
 
bool ercCheckNetclassConflicts (const std::vector< CONNECTION_SUBGRAPH * > &subgraphs)
 
bool ercCheckBusToNetConflicts (const CONNECTION_SUBGRAPH *aSubgraph)
 Check one subgraph for conflicting connections between net and bus labels.
 
bool ercCheckBusToBusConflicts (const CONNECTION_SUBGRAPH *aSubgraph)
 Check one subgraph for conflicting connections between two bus items.
 
bool ercCheckBusToBusEntryConflicts (const CONNECTION_SUBGRAPH *aSubgraph)
 Check one subgraph for conflicting bus entry to bus connections.
 
bool ercCheckNoConnects (const CONNECTION_SUBGRAPH *aSubgraph)
 Check one subgraph for proper presence or absence of no-connect symbols.
 
bool ercCheckFloatingWires (const CONNECTION_SUBGRAPH *aSubgraph)
 Check one subgraph for floating wires.
 
bool ercCheckLabels (const CONNECTION_SUBGRAPH *aSubgraph)
 Check one subgraph for proper connection of labels.
 
int ercCheckHierSheets ()
 Check that a hierarchical sheet has at least one matching label inside the sheet for each port on the parent sheet object.
 
int ercCheckSingleGlobalLabel ()
 Check that a global label is instantiated more that once across the schematic heirarchy.
 
size_t hasPins (const CONNECTION_SUBGRAPH *aLocSubgraph)
 Get the number of pins in a given subgraph.
 

Static Private Member Functions

static SCH_CONNECTIONmatchBusMember (SCH_CONNECTION *aBusConnection, SCH_CONNECTION *aSearch)
 Search for a matching bus member inside a bus connection.
 

Private Attributes

SCH_SHEET_LIST m_sheetList
 All the sheets in the schematic (as long as we don't have partial updates).
 
std::vector< SCH_ITEM * > m_items
 All connectable items in the schematic.
 
std::vector< CONNECTION_SUBGRAPH * > m_subgraphs
 The owner of all CONNECTION_SUBGRAPH objects.
 
std::vector< CONNECTION_SUBGRAPH * > m_driver_subgraphs
 Cache of a subset of m_subgraphs.
 
std::unordered_map< SCH_SHEET_PATH, std::vector< CONNECTION_SUBGRAPH * > > m_sheet_to_subgraphs_map
 Cache to lookup subgraphs in m_driver_subgraphs by sheet path.
 
std::vector< std::pair< SCH_SHEET_PATH, SCH_PIN * > > m_global_power_pins
 
std::unordered_map< wxString, std::shared_ptr< BUS_ALIAS > > m_bus_alias_cache
 
std::unordered_map< wxString, int > m_net_name_to_code_map
 
std::unordered_map< wxString, int > m_bus_name_to_code_map
 
std::unordered_map< wxString, std::vector< const CONNECTION_SUBGRAPH * > > m_global_label_cache
 
std::map< std::pair< SCH_SHEET_PATH, wxString >, std::vector< const CONNECTION_SUBGRAPH * > > m_local_label_cache
 
std::unordered_map< wxString, std::vector< CONNECTION_SUBGRAPH * > > m_net_name_to_subgraphs_map
 
std::unordered_map< SCH_ITEM *, CONNECTION_SUBGRAPH * > m_item_to_subgraph_map
 
NET_MAP m_net_code_to_subgraphs_map
 
int m_last_net_code
 
int m_last_bus_code
 
int m_last_subgraph_code
 
SCHEMATICm_schematic
 The schematic this graph represents.
 

Detailed Description

Calculate the connectivity of a schematic and generates netlists.

Definition at line 339 of file connection_graph.h.

Constructor & Destructor Documentation

◆ CONNECTION_GRAPH()

CONNECTION_GRAPH::CONNECTION_GRAPH ( SCHEMATIC aSchematic = nullptr)
inline

Definition at line 342 of file connection_graph.h.

◆ ~CONNECTION_GRAPH()

CONNECTION_GRAPH::~CONNECTION_GRAPH ( )
inline

Definition at line 349 of file connection_graph.h.

References Reset().

Member Function Documentation

◆ assignNetCodesToBus()

void CONNECTION_GRAPH::assignNetCodesToBus ( SCH_CONNECTION aConnection)
private

Ensure all members of the bus connection have a valid net code assigned.

Parameters
aConnectionis a bus connection.

Definition at line 2334 of file connection_graph.cpp.

References assignNewNetCode(), and SCH_CONNECTION::Members().

Referenced by processSubGraphs().

◆ assignNewNetCode()

int CONNECTION_GRAPH::assignNewNetCode ( SCH_CONNECTION aConnection)
private

Helper to assign a new net code to a connection.

Returns
the assigned code

Definition at line 2324 of file connection_graph.cpp.

References getOrCreateNetCode(), SCH_CONNECTION::Name(), and SCH_CONNECTION::SetNetCode().

Referenced by assignNetCodesToBus(), generateBusAliasMembers(), generateGlobalPowerPinSubGraphs(), and processSubGraphs().

◆ buildConnectionGraph()

void CONNECTION_GRAPH::buildConnectionGraph ( std::function< void(SCH_ITEM *)> *  aChangedItemHandler,
bool  aUnconditional 
)
private

Generate the connection graph (after all item connectivity has been updated).

In the first phase, the algorithm iterates over all items, and then over all items that are connected (graphically) to each item, placing them into CONNECTION_SUBGRAPHs. Items that can potentially drive connectivity (i.e. labels, pins, etc.) are added to the m_drivers vector of the subgraph.

In the second phase, each subgraph is resolved. To resolve a subgraph, the driver is first selected by CONNECTION_SUBGRAPH::ResolveDrivers(), and then the connection for the chosen driver is propagated to all the other items in the subgraph.

If the unconitional flag is set, all existing net classes will be removed and re-created. Otherwise, we will preserve existing net classes that do not conflict with the new net classes.

TODO(JE): Net codes are non-deterministic. Fortunately, they are also not really used for anything. We should consider removing them entirely and just using net names everywhere.

Definition at line 1935 of file connection_graph.cpp.

References buildItemSubGraphs(), SCH_CONNECTION::Clone(), collectAllDriverValues(), SCH_ITEM::Connection(), ConnTrace, DanglingProfileMask, alg::delete_if(), generateBusAliasMembers(), generateGlobalPowerPinSubGraphs(), CONNECTION_SUBGRAPH::GetDriverPriority(), GetKiCadThreadPool(), CONNECTION_SUBGRAPH::GetNetName(), PROJECT::GetProjectFile(), SCHEMATIC::GetSheets(), EDA_TEXT::GetText(), SCH_CONNECTION::IsBus(), SCH_CONNECTION::IsNet(), SCH_SCREEN::Items(), CONNECTION_SUBGRAPH::m_absorbed, CONNECTION_SUBGRAPH::m_absorbed_by, m_bus_alias_cache, CONNECTION_SUBGRAPH::m_code, CONNECTION_SUBGRAPH::m_dirty, CONNECTION_SUBGRAPH::m_driver_connection, m_driver_subgraphs, m_net_code_to_subgraphs_map, m_net_name_to_subgraphs_map, PROJECT_FILE::m_NetSettings, m_schematic, CONNECTION_SUBGRAPH::m_sheet, m_sheet_to_subgraphs_map, matchBusMember(), SCH_CONNECTION::Members(), name, SCH_CONNECTION::Name(), EE_RTREE::OfType(), path, pin, CONNECTION_SUBGRAPH::POWER_PIN, SCHEMATIC::Prj(), processSubGraphs(), propagateToNeighbors(), resolveAllDrivers(), SCH_HIER_LABEL_T, SCH_PIN_T, SCH_SHEET_PIN_T, SCH_CONNECTION::SetType(), PROF_TIMER::Show(), and tp.

◆ buildItemSubGraphs()

◆ collectAllDriverValues()

void CONNECTION_GRAPH::collectAllDriverValues ( )
private

◆ ercCheckBusToBusConflicts()

bool CONNECTION_GRAPH::ercCheckBusToBusConflicts ( const CONNECTION_SUBGRAPH aSubgraph)
private

Check one subgraph for conflicting connections between two bus items.

For example, a labeled bus wire connected to a hierarchical sheet pin where the labeled bus doesn't contain any of the same bus members as the sheet pin.

Parameters
aSubgraphis the subgraph to examine.
Returns
true for no errors, false for errors.

Definition at line 3190 of file connection_graph.cpp.

References SCH_SCREEN::Append(), SCH_ITEM::Connection(), ERC_ITEM::Create(), ERCE_BUS_TO_BUS_CONFLICT, EDA_ITEM::GetPosition(), SCH_CONNECTION::IsBus(), SCH_SHEET_PATH::LastScreen(), CONNECTION_SUBGRAPH::m_items, CONNECTION_SUBGRAPH::m_sheet, SCH_CONNECTION::Members(), SCH_GLOBAL_LABEL_T, SCH_HIER_LABEL_T, SCH_SHEET_PIN_T, SCH_TEXT_T, and EDA_ITEM::Type().

Referenced by RunERC().

◆ ercCheckBusToBusEntryConflicts()

bool CONNECTION_GRAPH::ercCheckBusToBusEntryConflicts ( const CONNECTION_SUBGRAPH aSubgraph)
private

Check one subgraph for conflicting bus entry to bus connections.

For example, a wire with label "A0" is connected to a bus labeled "D[8..0]"

Will also check for mistakes related to bus group names, for example: A bus group named "USB{DP DM}" should have bus entry connections like "USB.DP" but someone might accidentally just enter "DP".

Parameters
aSubgraphis the subgraph to examine.
Returns
true for no errors, false for errors.

Definition at line 3259 of file connection_graph.cpp.

References _, SCH_SCREEN::Append(), SCH_ITEM::Connection(), ERC_ITEM::Create(), ERCE_BUS_ENTRY_CONFLICT, SCH_CONNECTION::FullLocalName(), CONNECTION_SUBGRAPH::GetDriverPriority(), CONNECTION_SUBGRAPH::GetNameForDriver(), SCH_BUS_ENTRY_BASE::GetPosition(), SCH_SHEET_PATH::LastScreen(), SCH_BUS_WIRE_ENTRY::m_connected_bus_item, CONNECTION_SUBGRAPH::m_driver, CONNECTION_SUBGRAPH::m_driver_connection, CONNECTION_SUBGRAPH::m_drivers, CONNECTION_SUBGRAPH::m_items, CONNECTION_SUBGRAPH::m_sheet, SCH_CONNECTION::Members(), SCH_CONNECTION::Name(), SCH_SHEET_PATH::PathHumanReadable(), CONNECTION_SUBGRAPH::POWER_PIN, SCH_BUS_WIRE_ENTRY_T, SCH_LINE_T, EDA_ITEM::Type(), and UnescapeString().

Referenced by RunERC().

◆ ercCheckBusToNetConflicts()

bool CONNECTION_GRAPH::ercCheckBusToNetConflicts ( const CONNECTION_SUBGRAPH aSubgraph)
private

Check one subgraph for conflicting connections between net and bus labels.

For example, a net wire connected to a bus port/pin, or vice versa

Parameters
aSubgraphis the subgraph to examine.
Returns
true for no errors, false for errors.

Definition at line 3129 of file connection_graph.cpp.

References SCH_SCREEN::Append(), SCH_CONNECTION::ConfigureFromLabel(), ERC_ITEM::Create(), CTX_NETNAME, ERCE_BUS_TO_NET_CONFLICT, EscapeString(), SCH_ITEM::GetLayer(), EDA_ITEM::GetPosition(), SCH_CONNECTION::IsBus(), SCH_SHEET_PATH::LastScreen(), LAYER_BUS, CONNECTION_SUBGRAPH::m_items, CONNECTION_SUBGRAPH::m_sheet, SCH_GLOBAL_LABEL_T, SCH_HIER_LABEL_T, SCH_LABEL_T, SCH_LINE_T, SCH_SHEET_PIN_T, text, and EDA_ITEM::Type().

Referenced by RunERC().

◆ ercCheckFloatingWires()

bool CONNECTION_GRAPH::ercCheckFloatingWires ( const CONNECTION_SUBGRAPH aSubgraph)
private

Check one subgraph for floating wires.

Will throw an error for any subgraph that consists of just wires with no driver.

Parameters
aSubgraphis the subgraph to examine.
Returns
true for no errors, false for errors.

Definition at line 3615 of file connection_graph.cpp.

References SCH_SCREEN::Append(), ERC_ITEM::Create(), ERCE_WIRE_DANGLING, SCH_ITEM::GetLayer(), SCH_SHEET_PATH::LastScreen(), LAYER_WIRE, CONNECTION_SUBGRAPH::m_driver, CONNECTION_SUBGRAPH::m_items, CONNECTION_SUBGRAPH::m_sheet, SCH_BUS_WIRE_ENTRY_T, SCH_LINE_T, and EDA_ITEM::Type().

Referenced by RunERC().

◆ ercCheckHierSheets()

int CONNECTION_GRAPH::ercCheckHierSheets ( )
private

Check that a hierarchical sheet has at least one matching label inside the sheet for each port on the parent sheet object.

Parameters
aSubgraphis the subgraph to examine.
Returns
the number of errors found.

Definition at line 3880 of file connection_graph.cpp.

References _, SCH_SCREEN::Append(), ERC_ITEM::Create(), ERCE_HIERACHICAL_LABEL, ERCE_PIN_NOT_CONNECTED, SCHEMATIC::ErcSettings(), SCH_SHEET::GetPins(), SCH_SHEET::GetScreen(), SCH_LABEL_BASE::GetShownText(), ERC_SETTINGS::IsTestEnabled(), SCH_SCREEN::Items(), m_schematic, m_sheetList, pin, SCH_SHEET_PATH::push_back(), SCH_HIER_LABEL_T, SCH_SHEET_T, and UnescapeString().

Referenced by RunERC().

◆ ercCheckLabels()

bool CONNECTION_GRAPH::ercCheckLabels ( const CONNECTION_SUBGRAPH aSubgraph)
private

◆ ercCheckMultipleDrivers()

bool CONNECTION_GRAPH::ercCheckMultipleDrivers ( const CONNECTION_SUBGRAPH aSubgraph)
private

If the subgraph has multiple drivers of equal priority that are graphically connected, ResolveDrivers() will have stored the second driver for use by this function, which actually creates the markers.

Parameters
aSubgraphis the subgraph to examine
Returns
true for no errors, false for errors

Definition at line 3042 of file connection_graph.cpp.

References _, SCH_SCREEN::Append(), ERC_ITEM::Create(), ERCE_DRIVER_CONFLICT, CONNECTION_SUBGRAPH::GetNameForDriver(), EDA_ITEM::GetPosition(), CONNECTION_SUBGRAPH::GetSheet(), SCH_PIN::IsGlobalPower(), SCH_SHEET_PATH::LastScreen(), CONNECTION_SUBGRAPH::m_driver, CONNECTION_SUBGRAPH::m_drivers, CONNECTION_SUBGRAPH::m_multiple_drivers, CONNECTION_SUBGRAPH::m_sheet, SCH_GLOBAL_LABEL_T, SCH_HIER_LABEL_T, SCH_LABEL_T, SCH_PIN_T, and EDA_ITEM::Type().

Referenced by RunERC().

◆ ercCheckNetclassConflicts()

bool CONNECTION_GRAPH::ercCheckNetclassConflicts ( const std::vector< CONNECTION_SUBGRAPH * > &  subgraphs)
private

◆ ercCheckNoConnects()

◆ ercCheckSingleGlobalLabel()

int CONNECTION_GRAPH::ercCheckSingleGlobalLabel ( )
private

Check that a global label is instantiated more that once across the schematic heirarchy.

Definition at line 3830 of file connection_graph.cpp.

References SCH_SCREEN::Append(), ERC_ITEM::Create(), CTX_NETNAME, ERCE_SINGLE_GLOBAL_LABEL, EscapeString(), EDA_ITEM::GetPosition(), SCH_TEXT::GetShownText(), SCH_SHEET_PATH::LastScreen(), m_sheetList, and SCH_GLOBAL_LABEL_T.

Referenced by RunERC().

◆ ExtractAffectedItems()

std::set< std::pair< SCH_SHEET_PATH, SCH_ITEM * > > CONNECTION_GRAPH::ExtractAffectedItems ( const std::set< SCH_ITEM * > &  aItems)

For a set of items, this will remove the connected items and their associated data including subgraphs and generated codes from the connection graph.

Parameters
aItemsA vector of items whose presence should be removed from the graph.
Returns
The full set of all items associated with the input items that were removed.

Definition at line 708 of file connection_graph.cpp.

References ConnTrace, SCHEMATIC::CurrentSheet(), alg::delete_matching(), GetAllSubgraphs(), CONNECTION_SUBGRAPH::GetNetName(), SCH_SHEET::GetPins(), SCH_SYMBOL::GetPins(), GetSubgraphForItem(), CONNECTION_SUBGRAPH::m_code, m_items, m_schematic, pin, removeSubgraphs(), CONNECTION_SUBGRAPH::ResolveDrivers(), SCH_SHEET_T, and SCH_SYMBOL_T.

Referenced by SCH_EDIT_FRAME::RecalculateConnections().

◆ FindFirstSubgraphByName()

CONNECTION_SUBGRAPH * CONNECTION_GRAPH::FindFirstSubgraphByName ( const wxString &  aNetName)

Retrieve a subgraph for the given net name, if one exists.

Search every sheet.

Parameters
aNetNameis the full net name to search for.
Returns
the subgraph matching the query, or nullptr if none is found.

Definition at line 2891 of file connection_graph.cpp.

References m_net_name_to_subgraphs_map.

Referenced by SCH_EDIT_FRAME::RecalculateConnections().

◆ FindSubgraphByName()

CONNECTION_SUBGRAPH * CONNECTION_GRAPH::FindSubgraphByName ( const wxString &  aNetName,
const SCH_SHEET_PATH aPath 
)

Return the subgraph for a given net name on a given sheet.

Parameters
aNetNameis the local net name to look for.
aPathis a sheet path to look on.
Returns
the subgraph matching the query, or nullptr if none is found.

Definition at line 2870 of file connection_graph.cpp.

References CONNECTION_SUBGRAPH::m_absorbed, CONNECTION_SUBGRAPH::m_driver_connection, m_net_name_to_subgraphs_map, CONNECTION_SUBGRAPH::m_sheet, and SCH_CONNECTION::Name().

Referenced by NETLIST_EXPORTER_BASE::CreatePinList(), NETLIST_EXPORTER_BASE::findAllUnitsOfSymbol(), and SCH_EDITOR_CONTROL::UpdateNetHighlighting().

◆ generateBusAliasMembers()

◆ generateGlobalPowerPinSubGraphs()

◆ GetAllSubgraphs()

const std::vector< CONNECTION_SUBGRAPH * > CONNECTION_GRAPH::GetAllSubgraphs ( const wxString &  aNetName) const

◆ GetBusAlias()

std::shared_ptr< BUS_ALIAS > CONNECTION_GRAPH::GetBusAlias ( const wxString &  aName)

Return a bus alias pointer for the given name if it exists (from cache)

CONNECTION_GRAPH caches these, they are owned by the SCH_SCREEN that the alias was defined on. The cache is only used to update the graph.

Definition at line 2788 of file connection_graph.cpp.

References m_bus_alias_cache.

Referenced by SCH_CONNECTION::AppendInfoToMsgPanel(), and SCH_CONNECTION::ConfigureFromLabel().

◆ GetBusesNeedingMigration()

std::vector< const CONNECTION_SUBGRAPH * > CONNECTION_GRAPH::GetBusesNeedingMigration ( )

Determine which subgraphs have more than one conflicting bus label.

See also
DIALOG_MIGRATE_BUSES
Returns
a list of subgraphs that need migration

Definition at line 2796 of file connection_graph.cpp.

References SCH_ITEM::Connection(), ConnTrace, SCH_TEXT::GetShownText(), SCH_CONNECTION::IsBus(), SCH_CONNECTION::m_driver, m_subgraphs, and SCH_CONNECTION::Name().

Referenced by DIALOG_MIGRATE_BUSES::loadGraphData().

◆ getDefaultConnection()

std::shared_ptr< SCH_CONNECTION > CONNECTION_GRAPH::getDefaultConnection ( SCH_ITEM aItem,
CONNECTION_SUBGRAPH aSubgraph 
)
private

Build a new default connection for the given item based on its properties.

Handles strong drivers (power pins and labels) only.

Parameters
aItemis an item that can generate a connection name.
aSubgraphis used to determine the sheet to use and retrieve the cached name.
Returns
a connection generated from the item, or nullptr if item is not valid.

Definition at line 2679 of file connection_graph.cpp.

References CONNECTION_SUBGRAPH::GetNameForDriver(), CONNECTION_SUBGRAPH::m_sheet, pin, SCH_GLOBAL_LABEL_T, SCH_HIER_LABEL_T, SCH_LABEL_T, SCH_PIN_T, and EDA_ITEM::Type().

Referenced by processSubGraphs(), and propagateToNeighbors().

◆ GetNetMap()

◆ getOrCreateNetCode()

int CONNECTION_GRAPH::getOrCreateNetCode ( const wxString &  aNetName)
private
Parameters
aNetNamestring with the netname for coding
Returns
existing netcode (if it exists) or newly created one

Definition at line 2304 of file connection_graph.cpp.

References m_last_net_code, and m_net_name_to_code_map.

Referenced by assignNewNetCode().

◆ GetResolvedSubgraphName()

wxString CONNECTION_GRAPH::GetResolvedSubgraphName ( const CONNECTION_SUBGRAPH aSubGraph) const

Return the fully-resolved netname for a given subgraph.

Parameters
aSubGraphReference to the subgraph.
Returns
Netname string usable with m_net_name_to_subgraphs_map.

Definition at line 2844 of file connection_graph.cpp.

References CONNECTION_SUBGRAPH::GetNetName(), and m_net_name_to_subgraphs_map.

Referenced by ercCheckLabels(), and ercCheckNoConnects().

◆ GetSubgraphForItem()

CONNECTION_SUBGRAPH * CONNECTION_GRAPH::GetSubgraphForItem ( SCH_ITEM aItem)

◆ hasPins()

size_t CONNECTION_GRAPH::hasPins ( const CONNECTION_SUBGRAPH aLocSubgraph)
private

Get the number of pins in a given subgraph.

Parameters
aLocSubgraphSubgraph to search
Returns
total number of pins in the subgraph

Referenced by ercCheckLabels().

◆ matchBusMember()

SCH_CONNECTION * CONNECTION_GRAPH::matchBusMember ( SCH_CONNECTION aBusConnection,
SCH_CONNECTION aSearch 
)
staticprivate

Search for a matching bus member inside a bus connection.

For bus groups, this returns a bus member that matches aSearch by name. For bus vectors, this returns a bus member that matches by vector index.

Parameters
aBusConnectionis the bus connection to search.
aSearchis the net connection to search for.
Returns
a member of aBusConnection that matches aSearch.

Definition at line 2718 of file connection_graph.cpp.

References SCH_CONNECTION::IsBus(), SCH_CONNECTION::LocalName(), SCH_CONNECTION::Members(), SCH_CONNECTION::Type(), and SCH_CONNECTION::VectorIndex().

Referenced by buildConnectionGraph(), and propagateToNeighbors().

◆ Merge()

◆ processSubGraphs()

◆ propagateToNeighbors()

void CONNECTION_GRAPH::propagateToNeighbors ( CONNECTION_SUBGRAPH aSubgraph,
bool  aForce 
)
private

◆ recacheSubgraphName()

void CONNECTION_GRAPH::recacheSubgraphName ( CONNECTION_SUBGRAPH aSubgraph,
const wxString &  aOldName 
)
private

◆ Recalculate()

void CONNECTION_GRAPH::Recalculate ( const SCH_SHEET_LIST aSheetList,
bool  aUnconditional = false,
std::function< void(SCH_ITEM *)> *  aChangedItemHandler = nullptr 
)

Update the connection graph for the given list of sheets.

Parameters
aSheetListis the list of possibly modified sheets
aUnconditionalis true if an unconditional full recalculation should be done
aChangedItemHandleran optional handler to receive any changed items

Definition at line 611 of file connection_graph.cpp.

References ConnTrace, SCH_SYMBOL::GetPins(), SCH_ITEM::GetUnit(), SCH_SYMBOL::GetUnitSelection(), m_items, m_sheetList, pin, Reset(), SCH_SYMBOL_T, and updateItemConnectivity().

Referenced by BOOST_FIXTURE_TEST_CASE(), EESCHEMA_HELPERS::LoadSchematic(), SCH_EDIT_FRAME::RecalculateConnections(), and SCH_SCREENS::UpdateSymbolLinks().

◆ RemoveItem()

void CONNECTION_GRAPH::RemoveItem ( SCH_ITEM aItem)

◆ removeSubgraphs()

void CONNECTION_GRAPH::removeSubgraphs ( std::set< CONNECTION_SUBGRAPH * > &  aSubgraphs)
private

Remove references to the given subgraphs from all structures in the connection graph.

Parameters
aSubgraphsset of unique subgraphs to find/remove.

Definition at line 831 of file connection_graph.cpp.

References ConnTrace, m_bus_name_to_code_map, CONNECTION_SUBGRAPH::m_bus_neighbors, CONNECTION_SUBGRAPH::m_bus_parents, m_driver_subgraphs, m_global_label_cache, m_item_to_subgraph_map, m_local_label_cache, m_net_code_to_subgraphs_map, m_net_name_to_code_map, m_net_name_to_subgraphs_map, m_sheet_to_subgraphs_map, and m_subgraphs.

Referenced by ExtractAffectedItems().

◆ Reset()

◆ resolveAllDrivers()

void CONNECTION_GRAPH::resolveAllDrivers ( )
private

Find all subgraphs in the connection graph and calls ResolveDrivers() in parallel.

Definition at line 1306 of file connection_graph.cpp.

References ConnTrace, GetKiCadThreadPool(), m_driver_subgraphs, m_subgraphs, pin, SCH_BUS_WIRE_ENTRY_T, SCH_NO_CONNECT_T, SCH_PIN_T, tp, and EDA_ITEM::Type().

Referenced by buildConnectionGraph().

◆ RunERC()

int CONNECTION_GRAPH::RunERC ( )

Run electrical rule checks on the connectivity graph.

Precondition: graph is up-to-date

Returns
the number of errors found

NOTE:

We could check that labels attached to bus subgraphs follow the proper format (i.e. actually define a bus).

This check doesn't need to be here right now because labels won't actually be connected to bus wires if they aren't in the right format due to their TestDanglingEnds() implementation.

Definition at line 2930 of file connection_graph.cpp.

References ercCheckBusToBusConflicts(), ercCheckBusToBusEntryConflicts(), ercCheckBusToNetConflicts(), ercCheckFloatingWires(), ercCheckHierSheets(), ercCheckLabels(), ercCheckMultipleDrivers(), ercCheckNetclassConflicts(), ercCheckNoConnects(), ercCheckSingleGlobalLabel(), ERCE_BUS_ENTRY_CONFLICT, ERCE_BUS_TO_BUS_CONFLICT, ERCE_BUS_TO_NET_CONFLICT, ERCE_DRIVER_CONFLICT, ERCE_GLOBLABEL, ERCE_HIERACHICAL_LABEL, ERCE_LABEL_NOT_CONNECTED, ERCE_NETCLASS_CONFLICT, ERCE_NOCONNECT_CONNECTED, ERCE_NOCONNECT_NOT_CONNECTED, ERCE_PIN_NOT_CONNECTED, ERCE_SINGLE_GLOBAL_LABEL, ERCE_WIRE_DANGLING, SCHEMATIC::ErcSettings(), ERC_SETTINGS::IsTestEnabled(), m_net_name_to_subgraphs_map, m_schematic, and m_subgraphs.

Referenced by ERC_TESTER::RunTests().

◆ SetLastCodes()

void CONNECTION_GRAPH::SetLastCodes ( const CONNECTION_GRAPH aOther)
inline

◆ SetSchematic()

void CONNECTION_GRAPH::SetSchematic ( SCHEMATIC aSchematic)
inline

Definition at line 356 of file connection_graph.h.

References m_schematic.

◆ updateItemConnectivity()

void CONNECTION_GRAPH::updateItemConnectivity ( const SCH_SHEET_PATH aSheet,
const std::vector< SCH_ITEM * > &  aItemList 
)
private

Update the graphical connectivity between items (i.e.

where they touch) The items passed in must be on the same sheet.

In the first phase, all items in aItemList have their connections initialized for the given sheet (since they may have connections on more than one sheet, and each needs to be calculated individually). The graphical connection points for the item are added to a map that stores (x, y) -> [list of items].

Any item that is stored in the list of items that have a connection point at a given (x, y) location will eventually be electrically connected. This means that we can't store SCH_SYMBOLs in this map – we must store a structure that links a specific pin on a symbol back to that symbol: a SCH_PIN_CONNECTION. This wrapper class is a convenience for linking a pin and symbol to a specific (x, y) point.

In the second phase, we iterate over each value in the map, which is a vector of items that have overlapping connection points. After some checks to ensure that the items should actually connect, the items are linked together using ConnectedItems().

As a side effect, items are loaded into m_items for BuildConnectionGraph().

Parameters
aSheetis the path to the sheet of all items in the list.
aItemListis a list of items to consider.

Definition at line 989 of file connection_graph.cpp.

References SCH_ITEM::AddConnectionTo(), SCH_ITEM::ClearConnectedItems(), SCH_SCREEN::GetBus(), SCH_PIN::GetDefaultNetName(), SCH_SHEET::GetFileName(), GetKiCadThreadPool(), SCH_ITEM::GetLayer(), SCH_SHEET::GetPins(), SCH_SYMBOL::GetPins(), SCH_PIN::IsGlobalPower(), SCH_SHEET_PATH::Last(), SCH_SHEET_PATH::LastScreen(), LAYER_BUS, LAYER_BUS_JUNCTION, LAYER_JUNCTION, SCH_BUS_WIRE_ENTRY::m_connected_bus_item, SCH_BUS_BUS_ENTRY::m_connected_bus_items, m_global_power_pins, m_items, name, pin, alg::remove_duplicates(), SCH_BUS_BUS_ENTRY_T, SCH_BUS_WIRE_ENTRY_T, SCH_JUNCTION_T, SCH_LINE_T, SCH_PIN_T, SCH_SHEET_T, SCH_SYMBOL_T, SCH_CONNECTION::SetType(), and tp.

Referenced by Recalculate().

Member Data Documentation

◆ m_bus_alias_cache

std::unordered_map<wxString, std::shared_ptr<BUS_ALIAS> > CONNECTION_GRAPH::m_bus_alias_cache
private

Definition at line 726 of file connection_graph.h.

Referenced by buildConnectionGraph(), buildItemSubGraphs(), GetBusAlias(), and Reset().

◆ m_bus_name_to_code_map

std::unordered_map<wxString, int> CONNECTION_GRAPH::m_bus_name_to_code_map
private

Definition at line 730 of file connection_graph.h.

Referenced by Merge(), processSubGraphs(), removeSubgraphs(), and Reset().

◆ m_driver_subgraphs

std::vector<CONNECTION_SUBGRAPH*> CONNECTION_GRAPH::m_driver_subgraphs
private

◆ m_global_label_cache

std::unordered_map<wxString, std::vector<const CONNECTION_SUBGRAPH*> > CONNECTION_GRAPH::m_global_label_cache
private

◆ m_global_power_pins

std::vector<std::pair<SCH_SHEET_PATH, SCH_PIN*> > CONNECTION_GRAPH::m_global_power_pins
private

◆ m_item_to_subgraph_map

std::unordered_map<SCH_ITEM*, CONNECTION_SUBGRAPH*> CONNECTION_GRAPH::m_item_to_subgraph_map
private

◆ m_items

std::vector<SCH_ITEM*> CONNECTION_GRAPH::m_items
private

All connectable items in the schematic.

Definition at line 713 of file connection_graph.h.

Referenced by buildItemSubGraphs(), ExtractAffectedItems(), Merge(), Recalculate(), RemoveItem(), Reset(), and updateItemConnectivity().

◆ m_last_bus_code

int CONNECTION_GRAPH::m_last_bus_code
private

Definition at line 745 of file connection_graph.h.

Referenced by Merge(), processSubGraphs(), Reset(), and SetLastCodes().

◆ m_last_net_code

int CONNECTION_GRAPH::m_last_net_code
private

Definition at line 743 of file connection_graph.h.

Referenced by getOrCreateNetCode(), Merge(), Reset(), and SetLastCodes().

◆ m_last_subgraph_code

int CONNECTION_GRAPH::m_last_subgraph_code
private

◆ m_local_label_cache

std::map< std::pair<SCH_SHEET_PATH, wxString>, std::vector<const CONNECTION_SUBGRAPH*> > CONNECTION_GRAPH::m_local_label_cache
private

◆ m_net_code_to_subgraphs_map

NET_MAP CONNECTION_GRAPH::m_net_code_to_subgraphs_map
private

◆ m_net_name_to_code_map

std::unordered_map<wxString, int> CONNECTION_GRAPH::m_net_name_to_code_map
private

Definition at line 728 of file connection_graph.h.

Referenced by getOrCreateNetCode(), Merge(), removeSubgraphs(), and Reset().

◆ m_net_name_to_subgraphs_map

◆ m_schematic

SCHEMATIC* CONNECTION_GRAPH::m_schematic
private

◆ m_sheet_to_subgraphs_map

std::unordered_map<SCH_SHEET_PATH, std::vector<CONNECTION_SUBGRAPH*> > CONNECTION_GRAPH::m_sheet_to_subgraphs_map
private

Cache to lookup subgraphs in m_driver_subgraphs by sheet path.

Definition at line 722 of file connection_graph.h.

Referenced by buildConnectionGraph(), Merge(), processSubGraphs(), propagateToNeighbors(), removeSubgraphs(), and Reset().

◆ m_sheetList

SCH_SHEET_LIST CONNECTION_GRAPH::m_sheetList
private

All the sheets in the schematic (as long as we don't have partial updates).

Definition at line 710 of file connection_graph.h.

Referenced by ercCheckHierSheets(), ercCheckSingleGlobalLabel(), and Recalculate().

◆ m_subgraphs


The documentation for this class was generated from the following files: