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82 lines
3.2 KiB
C++
82 lines
3.2 KiB
C++
//////////////////////////////////////////////////////////////////////////////
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// Product: Calculator Example with inheritance of the whole state model
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// Last Updated for Version: 4.5.00
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// Date of the Last Update: May 20, 2012
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//
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// Q u a n t u m L e a P s
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// ---------------------------
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// innovating embedded systems
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//
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// Copyright (C) 2002-2012 Quantum Leaps, LLC. All rights reserved.
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//
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// This program is open source software: you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as published
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// by the Free Software Foundation, either version 2 of the License, or
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// (at your option) any later version.
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//
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// Alternatively, this program may be distributed and modified under the
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// terms of Quantum Leaps commercial licenses, which expressly supersede
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// the GNU General Public License and are specifically designed for
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// licensees interested in retaining the proprietary status of their code.
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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
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//
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// Contact information:
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// Quantum Leaps Web sites: http://www.quantum-leaps.com
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// http://www.state-machine.com
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// e-mail: info@quantum-leaps.com
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//////////////////////////////////////////////////////////////////////////////
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#include "qp_port.h"
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#include "bsp.h" // board support package
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#include "calc2.h"
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#include <stdlib.h>
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Q_DEFINE_THIS_FILE
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// state variables -----------------------------------------------------------
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QStateHandler Calc2::state_operand2 = (QStateHandler)&Calc2::operand2;
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// Ctor definition -----------------------------------------------------------
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Calc2::Calc2(void) : Calc1() {
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// subsitute all overridden states...
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Calc1::state_operand2 = state_operand2;
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}
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//............................................................................
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QState Calc2::operand2(Calc2 *me, QEvt const *e) {
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switch (e->sig) {
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case PERCENT_SIG: {
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double operand2 = BSP_get_value();
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switch (me->m_operator) {
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case KEY_PLUS:
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case KEY_MINUS: {
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operand2 = me->m_operand1 * operand2 / 100.0;
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break;
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}
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case KEY_MULT:
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case KEY_DIVIDE: {
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operand2 /= 100.0;
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break;
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}
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default: {
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Q_ERROR();
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break;
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}
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}
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if (BSP_eval(me->m_operand1, me->m_operator, operand2)) {
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return Q_TRAN(state_result);
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}
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else {
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return Q_TRAN(state_error);
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}
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}
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}
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return Q_SUPER(&Calc1::operand2); // let Calc1 handle other events
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}
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