317 lines
9.7 KiB
C++
317 lines
9.7 KiB
C++
/*
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* This program source code file is part of KiCad, a free EDA CAD application.
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*
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* Copyright (C) 2018 CERN
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* Copyright (C) 2021-2023 KiCad Developers, see AUTHORS.txt for contributors.
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* @author Jon Evans <jon@craftyjon.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _SCH_CONNECTION_H
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#define _SCH_CONNECTION_H
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#include <memory>
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#include <unordered_set>
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#include <wx/regex.h>
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#include <bus_alias.h>
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#include <sch_sheet_path.h>
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class CONNECTION_GRAPH;
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class SCH_ITEM;
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class SCH_SHEET_PATH;
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class MSG_PANEL_ITEM;
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enum class CONNECTION_TYPE
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{
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NONE, ///< No connection to this item
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NET, ///< This item represents a net
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BUS, ///< This item represents a bus vector
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BUS_GROUP, ///< This item represents a bus group
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};
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/**
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* Each graphical item can have a SCH_CONNECTION describing its logical
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* connection (to a bus or net). These are generated when netlisting, or when
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* editing operations that can change the netlist are performed.
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*
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* In hierarchical schematics, a single SCH_ITEM object can refer to multiple
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* distinct parts of a design (in the case of a sub-sheet that is instanced
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* more than once in a higher level sheet). Because of this, a single item may
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* contain more than one SCH_CONNECTION -- each is specific to a sheet.
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*
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* Symbols contain connections for each of their pins (and for each sheet they
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* exist on) but don't use their own connection object.
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*/
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class SCH_CONNECTION
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{
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public:
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SCH_CONNECTION( SCH_ITEM* aParent = nullptr, const SCH_SHEET_PATH& aPath = SCH_SHEET_PATH() );
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SCH_CONNECTION( CONNECTION_GRAPH* aGraph );
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~SCH_CONNECTION()
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{}
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/**
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* Note: the equality operator for SCH_CONNECTION only tests the net
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* properties, not the ownership / sheet location!
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*/
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bool operator==( const SCH_CONNECTION& aOther ) const;
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bool operator!=( const SCH_CONNECTION& aOther ) const;
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void SetGraph( CONNECTION_GRAPH* aGraph )
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{
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m_graph = aGraph;
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}
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/**
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* Configures the connection given a label.
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* For CONNECTION_NET, this just sets the name.
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* For CONNECTION_BUS, this will deduce the correct BUS_TYPE and also
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* generate a correct list of members.
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*/
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void ConfigureFromLabel( const wxString& aLabel );
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/**
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* Clears connectivity information
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*/
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void Reset();
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/**
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* Copies connectivity information (but not parent) from another connection
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*
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* @param aOther is the connection to clone
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*/
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void Clone( const SCH_CONNECTION& aOther );
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SCH_ITEM* Parent() const { return m_parent; }
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SCH_ITEM* Driver() const { return m_driver; }
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void SetDriver( SCH_ITEM* aItem );
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SCH_SHEET_PATH Sheet() const { return m_sheet; }
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void SetSheet( SCH_SHEET_PATH aSheet );
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SCH_SHEET_PATH LocalSheet() const { return m_local_sheet; }
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/**
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* Checks if the SCH_ITEM this connection is attached to can drive connections
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* Drivers can be labels, sheet pins, or symbol pins.
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*
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* @return true if the attached items is a driver
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*/
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bool IsDriver() const;
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bool IsBus() const
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{
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return ( m_type == CONNECTION_TYPE::BUS || m_type == CONNECTION_TYPE::BUS_GROUP );
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}
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bool IsNet() const
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{
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return ( m_type == CONNECTION_TYPE::NET );
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}
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bool IsUnconnected() const { return ( m_type == CONNECTION_TYPE::NONE ); }
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bool IsDirty() const { return m_dirty; }
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void SetDirty() { m_dirty = true; }
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void ClearDirty() { m_dirty = false; }
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bool HasDriverChanged() const;
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void ClearDriverChanged();
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void* GetLastDriver() const { return m_lastDriver; }
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wxString Name( bool aIgnoreSheet = false ) const;
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wxString LocalName() const { return m_local_name; }
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wxString FullLocalName() const
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{
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return m_local_prefix + m_local_name + m_suffix;
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}
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void SetName( const wxString& aName )
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{
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m_name = aName;
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recacheName();
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}
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wxString GetNetName() const;
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wxString Prefix() const { return m_prefix; }
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void SetPrefix( const wxString& aPrefix );
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wxString BusPrefix() const { return m_bus_prefix; }
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wxString Suffix() const { return m_suffix; }
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void SetSuffix( const wxString& aSuffix );
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CONNECTION_TYPE Type() const { return m_type; }
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void SetType( CONNECTION_TYPE aType )
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{
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m_type = aType;
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recacheName();
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}
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int NetCode() const { return m_net_code; }
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void SetNetCode( int aCode ) { m_net_code = aCode; }
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int BusCode() const { return m_bus_code; }
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void SetBusCode( int aCode ) { m_bus_code = aCode; }
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int SubgraphCode() const { return m_subgraph_code; }
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void SetSubgraphCode( int aCode ) { m_subgraph_code = aCode; }
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long VectorStart() const { return m_vector_start; }
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long VectorEnd() const { return m_vector_end; }
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long VectorIndex() const { return m_vector_index; }
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wxString VectorPrefix() const { return m_vector_prefix; }
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const std::vector< std::shared_ptr< SCH_CONNECTION > >& Members() const
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{
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return m_members;
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}
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const std::vector< std::shared_ptr< SCH_CONNECTION > > AllMembers() const;
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static wxString PrintBusForUI( const wxString& aString );
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/**
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* Returns true if this connection is contained within aOther (but not the same as aOther)
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* @return true if this connection is a member of aOther
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*/
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bool IsSubsetOf( SCH_CONNECTION* aOther ) const;
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/**
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* Returns true if this connection is a member of bus connection aOther
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*
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* Will always return false if aOther is not a bus connection
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*/
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bool IsMemberOfBus( SCH_CONNECTION* aOther ) const;
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/**
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* Adds information about the connection object to aList
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*/
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void AppendInfoToMsgPanel( std::vector<MSG_PANEL_ITEM>& aList ) const;
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/**
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* Test if \a aLabel has a bus notation.
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*
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* @param aLabel A wxString object containing the label to test.
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* @return true if text is a bus notation format otherwise false is returned.
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*/
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static bool IsBusLabel( const wxString& aLabel );
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/**
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* Test if \a aLabel looks like a bus notation.
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* This check is much less expensive than IsBusLabel.
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*
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* @param aLabel A wxString object containing the label to test.
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* @return true if text might be a bus label
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*/
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static bool MightBeBusLabel( const wxString& aLabel );
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private:
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void recacheName();
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bool m_dirty;
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SCH_SHEET_PATH m_sheet; ///< The hierarchical sheet this connection is on
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/**
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* When a connection is overridden by one on a different hierarchical sheet, it will be cloned
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* and m_sheet will point to the parent sheet. This member stores the original sheet so that it
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* can be used for applications such as net highlighting to retrieve the sheet of the parent
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* item from the highlighted connection.
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*/
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SCH_SHEET_PATH m_local_sheet;
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SCH_ITEM* m_parent; ///< The SCH_ITEM this connection is owned by
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void* m_lastDriver; ///< WEAK POINTER (there is no guarantee it is still allocated)
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///< Equality comparisons are OK, but that's pretty much it
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SCH_ITEM* m_driver; ///< The SCH_ITEM that drives this connection's net
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CONNECTION_TYPE m_type; ///< @see enum CONNECTION_TYPE
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wxString m_name; ///< Name of the connection.
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wxString m_cached_name; ///< Full name, including prefix and suffix
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wxString m_cached_name_with_path; ///< Full name including sheet path (if not global)
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/**
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* For bus members, we want to keep track of the "local" name of a member, that is,
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* the name it takes on from its parent bus name. This is because we always want to use
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* the local name for bus unfolding, matching within buses, etc. The actual resolved name
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* of this bus member might change, for example if it's connected elsewhere to some other
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* item with higher priority.
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*/
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wxString m_local_name;
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/// Prefix if connection is member of a labeled bus group (or "" if not)
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wxString m_prefix;
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/// Local prefix for group bus members (used with m_local_name)
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wxString m_local_prefix;
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/// Optional prefix of a bux group (always empty for nets and vector buses)
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wxString m_bus_prefix;
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wxString m_suffix; ///< Name suffix (used only for disambiguation)
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int m_net_code; // TODO(JE) remove if unused
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int m_bus_code; // TODO(JE) remove if unused
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int m_subgraph_code; ///< Groups directly-connected items
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long m_vector_index; ///< Index of bus vector member nets
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long m_vector_start; ///< Highest member of a vector bus
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long m_vector_end; ///< Lowest member of a vector bus
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///< Prefix name of the vector, if m_type == CONNECTION_BUS (or "" if not)
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wxString m_vector_prefix;
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/**
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* For bus connections, store a list of member connections
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*
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* NOTE: All connections that Clone() others share the list of member
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* pointers. This seems fine at the moment.
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*/
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std::vector< std::shared_ptr< SCH_CONNECTION > > m_members;
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/**
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* Pointer to the connection graph for the schematic this connection exists on.
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* Needed for bus alias lookups.
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*/
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CONNECTION_GRAPH* m_graph;
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};
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#endif
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