coroutines.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2018-2020 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
 */
 
#include <functional>
 
#include <tool/coroutine.h>
 
#include <qa_utils/utility_registry.h>
 
#include <common.h>
 
#include <wx/cmdline.h>
 
#include <cstdio>
#include <string>
 
 
typedef COROUTINE<int, int> MyCoroutine;
 
class CoroutineExample
{
public:
 CoroutineExample( int aCount ) : m_count( aCount )
 {
 }
 
 int CountTo( int n )
 {
 for( int i = 1; i <= n; i++ )
 {
 m_cofunc->KiYield( i );
 }
 
 return 0;
 }
 
 void Run()
 {
 m_cofunc = std::make_unique<MyCoroutine>( this, &CoroutineExample::CountTo );
 m_cofunc->Call( m_count );
 
 while( m_cofunc->Running() )
 {
 m_cofunc->Resume();
 }
 }
 
 std::unique_ptr<MyCoroutine> m_cofunc;
 int m_count;
};
 
 
static const wxCmdLineEntryDesc g_cmdLineDesc[] = {
 {
 wxCMD_LINE_SWITCH,
 "h",
 "help",
 _( "displays help on the command line parameters" ).mb_str(),
 wxCMD_LINE_VAL_NONE,
 wxCMD_LINE_OPTION_HELP,
 },
 {
 wxCMD_LINE_OPTION,
 "c",
 "count",
 _( "how high to count" ).mb_str(),
 wxCMD_LINE_VAL_NUMBER,
 wxCMD_LINE_PARAM_OPTIONAL,
 },
 { wxCMD_LINE_NONE }
};
 
 
static int coroutine_main_func( int argc, char** argv )
{
 wxCmdLineParser cl_parser( argc, argv );
 cl_parser.SetDesc( g_cmdLineDesc );
 cl_parser.AddUsageText( _( "Test a simple coroutine that yields a given number of times" ) );
 
 int cmd_parsed_ok = cl_parser.Parse();
 if( cmd_parsed_ok != 0 )
 {
 // Help and invalid input both stop here
 return ( cmd_parsed_ok == -1 ) ? KI_TEST::RET_CODES::OK : KI_TEST::RET_CODES::BAD_CMDLINE;
 }
 
 long count = 5;
 cl_parser.Found( "count", &count );
 
 CoroutineExample obj( (int) count );
 
 obj.Run();
 
 return KI_TEST::RET_CODES::OK;
}
 
 
/*
 * Define the tool interface
 */
static bool registered = UTILITY_REGISTRY::Register( {
 "coroutine",
 "Test a simple coroutine",
 coroutine_main_func,
} );