rexx-things/modules/api/c++/external/useExternalRoutines.rex
2025-03-12 20:50:48 +00:00

65 lines
4.0 KiB
Rexx
Executable File

/*----------------------------------------------------------------------------*/
/* */
/* Copyright (c) 2021 Rexx Language Association. All rights reserved. */
/* */
/* This program and the accompanying materials are made available under */
/* the terms of the Common Public License v1.0 which accompanies this */
/* distribution. A copy is also available at the following address: */
/* https://www.oorexx.org/license.html */
/* */
/* Redistribution and use in source and binary forms, with or */
/* without modification, are permitted provided that the following */
/* conditions are met: */
/* */
/* Redistributions of source code must retain the above copyright */
/* notice, this list of conditions and the following disclaimer. */
/* Redistributions in binary form must reproduce the above copyright */
/* notice, this list of conditions and the following disclaimer in */
/* the documentation and/or other materials provided with the distribution. */
/* */
/* Neither the name of Rexx Language Association nor the names */
/* of its contributors may be used to endorse or promote products */
/* derived from this software without specific prior written permission. */
/* */
/* THIS SOFTWARE IS PROVIDED BY THE COPYright HOLDERS AND CONTRIBUTORS */
/* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT */
/* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS */
/* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYright */
/* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, */
/* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED */
/* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, */
/* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY */
/* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING */
/* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS */
/* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
/* */
/*----------------------------------------------------------------------------*/
say "NoArgRoutineReturn123() :" pp(NoArgRoutineReturn123())
say
say "calling a routine that returns nothing:"
call NoArgRoutineVoid
say
say "OneArgRoutineReturnArg(1) :" pp(OneArgRoutineReturnArg(1))
say "OneArgRoutineReturnArg( ) :" pp(OneArgRoutineReturnArg())
say
say "calling another routine that returns nothing:"
call OneArgRoutineVoid 2
say
say "TwoIntArgAdder(4, 5) :" pp(TwoIntArgAdder(4, 5))
say "TwoDoubleArgAdder(6 , 8 ):" pp(TwoDoubleArgAdder(6 , 8 ))
say "TwoDoubleArgAdder(6.7, 8.9):" pp(TwoDoubleArgAdder(6.7, 8.9))
say "---"
say "Invoking an external routine with wrong arguments:"
say "TwoIntArgAdder(9.8, 7.6) :" pp(TwoIntArgAdder(9.8, 7.6))
::routine pp -- return string value enclosed in square brackets
return "["arg(1)"]"
::routine NoArgRoutineReturn123 external "library external_routines NoArgRoutineReturn123"
::routine NoArgRoutineVoid external "library external_routines NoArgRoutineVoid"
::routine OneArgRoutineReturnArg external "library external_routines OneArgRoutineReturnArg"
::routine OneArgRoutineVoid external "library external_routines OneArgRoutineVoid"
::routine TwoDoubleArgAdder external "library external_routines TwoDoubleArgAdder"