kicad/eeschema/erc_sch_pin_context.h

88 lines
2.6 KiB
C++

/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2009 Jean-Pierre Charras, jp.charras at wanadoo.fr
* Copyright (C) 2011 Wayne Stambaugh <stambaughw@gmail.com>
* Copyright (C) 2009-2023 KiCad Developers, see change_log.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_sch_pin_context.h
*/
#ifndef _ERC_ITEM_CONTEXT_H
#define _ERC_ITEM_CONTEXT_H
#include <sch_pin.h>
#include <boost/functional/hash.hpp>
/**
* A class used to associate a #SCH_PIN with its owning #SCH_SHEET_PATH, in order to handle ERC
* checks across connected common hierarchical schematics/
*/
class ERC_SCH_PIN_CONTEXT
{
public:
ERC_SCH_PIN_CONTEXT() : m_pin( nullptr ), m_sheet(), m_hash( 0 ) {}
ERC_SCH_PIN_CONTEXT( SCH_PIN* pin, SCH_SHEET_PATH sheet ) : m_pin( pin ), m_sheet( sheet )
{
rehash();
}
ERC_SCH_PIN_CONTEXT( const ERC_SCH_PIN_CONTEXT& other ) = default;
ERC_SCH_PIN_CONTEXT& operator=( const ERC_SCH_PIN_CONTEXT& other ) = default;
~ERC_SCH_PIN_CONTEXT() = default;
/**
* Get the SCH_PIN for this context.
*/
SCH_PIN* Pin();
/**
* Get the #SCH_SHEET_PATH context for the paired #SCH_PIN.
*/
SCH_SHEET_PATH& Sheet();
/**
* Test two pin contexts for equality based on the deterministic hash.
*/
bool operator==( const ERC_SCH_PIN_CONTEXT& other ) const;
/**
* Provide a deterministic ordering for item contexts based on hash value.
*/
bool operator<( const ERC_SCH_PIN_CONTEXT& other ) const;
protected:
/**
* Calculate the deterministic hash for this context.
*/
void rehash();
SCH_PIN* m_pin;
SCH_SHEET_PATH m_sheet;
size_t m_hash;
};
#endif //_ERC_ITEM_CONTEXT_H