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qpcpp/examples/workstation/calc1/calc1.qm
QL 7fabe65dac 6.5.0
2019-03-28 11:59:31 -04:00

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<?xml version="1.0" encoding="UTF-8"?>
<model version="4.5.0" links="0">
<documentation>Improved model of the Calculator described in Chapter 4 of PSiCC2. Improvements include:
- using &quot;no me-&gt;&quot; pointer implementation
- placing the &quot;negated1&quot; state inside &quot;operand1&quot; superstate
- placing the &quot;negated2&quot; state inside &quot;operand2&quot; superstate
- adding handling of operator precedence '*','/' before '+','-'</documentation>
<framework name="qpcpp"/>
<package name="Events" stereotype="0x01">
<class name="CalcEvt" superclass="qpcpp::QEvt">
<attribute name="key_code" type="uint8_t" visibility="0x00" properties="0x00"/>
</class>
</package>
<package name="SMs" stereotype="0x02">
<class name="Calc" superclass="qpcpp::QHsm">
<documentation>Calculator state machine</documentation>
<attribute name="inst" type="Calc" visibility="0x00" properties="0x01">
<documentation>The only inst of the Calc object (Singleton pattern).</documentation>
</attribute>
<attribute name="m_op1" type="double" visibility="0x02" properties="0x00"/>
<attribute name="m_op2" type="double" visibility="0x02" properties="0x00"/>
<attribute name="m_oper1" type="uint8_t" visibility="0x02" properties="0x00"/>
<attribute name="m_oper2" type="uint8_t" visibility="0x02" properties="0x00"/>
<operation name="Calc" type="" visibility="0x00" properties="0x00">
<documentation>constructor</documentation>
<code> : QHsm(Q_STATE_CAST(&amp;Calc::initial))</code>
</operation>
<operation name="eval" type="bool" visibility="0x00" properties="0x00">
<documentation>// guard function to evaluate the current expression
// taking into account the precedence of operands.
// return: true if evaluation successfull
// false when error encountered</documentation>
<parameter name="op" type="double"/>
<parameter name="oper" type="uint8_t"/>
<code>double result;
if ((oper == KEY_NULL) || (oper == KEY_PLUS) || (oper == KEY_MINUS)) {
switch (m_oper2) {
case KEY_MULT: {
m_op2 *= op;
break;
}
case KEY_DIVIDE: {
if ((-1e-30 &lt; op) &amp;&amp; (op &lt; 1e-30)) {
BSP_display_error(&quot; Error 0 &quot;); // divide by zero
return false;
}
m_op2 /= op;
break;
}
default: { /* no op2 yet */
m_op2 = op;
m_oper2 = oper;
break;
}
}
switch (m_oper1) {
case KEY_PLUS: {
m_op1 += m_op2;
break;
}
case KEY_MINUS: {
m_op1 -= m_op2;
break;
}
case KEY_MULT: {
m_op1 *= m_op2;
break;
}
case KEY_DIVIDE: {
if ((-1e-30 &lt; m_op2) &amp;&amp; (m_op2 &lt; 1e-30)) {
BSP_display_error(&quot; Error 0 &quot;); // divide by zero
return false;
}
m_op1 /= m_op2;
break;
}
default: {
Q_ERROR();
break;
}
}
m_oper1 = oper;
m_oper2 = KEY_NULL;
result = m_op1;
}
else { // (oper == KEY_MULT) || (oper == KEY_DIV)
switch (m_oper2) {
case KEY_MULT: {
m_op2 *= op;
break;
}
case KEY_DIVIDE: {
if ((-1e-30 &lt; op) &amp;&amp; (op &lt; 1e-30)) {
BSP_display_error(&quot; Error 0 &quot;); // divide by zero
return false;
}
m_op2 /= op;
break;
}
default: { // oper2 not provided yet
m_op2 = op;
break;
}
}
m_oper2 = oper;
result = m_op2;
}
if ((result &lt; -99999999.0) || (99999999.0 &lt; result)) {
BSP_display_error(&quot; Error 1 &quot;); // out of range
return false;
}
if ((-0.0000001 &lt; result) &amp;&amp; (result &lt; 0.0000001)) {
result = 0.0;
}
BSP_display(result);
return true;</code>
</operation>
<statechart properties="0x02">
<initial target="../1">
<action>BSP_clear();
(void)e; /* unused parameter */</action>
<initial_glyph conn="2,2,5,1,92,4,-2">
<action box="1,-2,13,4"/>
</initial_glyph>
</initial>
<state name="on">
<entry>BSP_message(&quot;on-ENTRY;&quot;);</entry>
<exit>BSP_message(&quot;on-EXIT;&quot;);</exit>
<initial target="../3">
<action>BSP_message(&quot;on-INIT;&quot;);</action>
<initial_glyph conn="15,9,5,1,45,9,-2">
<action box="1,0,5,2"/>
</initial_glyph>
</initial>
<tran trig="C" target="..">
<action>BSP_clear();</action>
<tran_glyph conn="2,12,3,1,90">
<action box="0,-2,4,2"/>
</tran_glyph>
</tran>
<tran trig="OFF" target="../../2">
<tran_glyph conn="2,14,3,1,92,104,-75">
<action box="0,0,5,2"/>
</tran_glyph>
</tran>
<state name="ready">
<entry>BSP_message(&quot;ready-ENTRY;&quot;);
m_oper2 = KEY_NULL;</entry>
<exit>BSP_message(&quot;ready-EXIT;&quot;);</exit>
<initial target="../5">
<action>BSP_message(&quot;ready-INIT;&quot;);</action>
<initial_glyph conn="18,20,5,0,20,2">
<action box="0,-2,6,2"/>
</initial_glyph>
</initial>
<tran trig="DIGIT_0" target="../../4/3">
<action>BSP_clear();</action>
<tran_glyph conn="18,34,2,0,11">
<action box="1,0,6,2"/>
</tran_glyph>
</tran>
<tran trig="DIGIT_1_9" target="../../4/4">
<action>BSP_clear();
BSP_insert(Q_EVT_CAST(CalcEvt)-&gt;key_code);</action>
<tran_glyph conn="32,34,2,0,11">
<action box="1,0,9,2"/>
</tran_glyph>
</tran>
<tran trig="POINT" target="../../4/5">
<action>BSP_clear();
BSP_insert((int)'0');
BSP_insert((int)'.');</action>
<tran_glyph conn="52,34,2,0,11">
<action box="0,0,6,2"/>
</tran_glyph>
</tran>
<tran trig="OPER" target="../../5">
<action>m_op1 = BSP_get_value();
m_oper1 = Q_EVT_CAST(CalcEvt)-&gt;key_code;</action>
<tran_glyph conn="58,24,1,1,32,48,-32">
<action box="0,-2,6,2"/>
</tran_glyph>
</tran>
<state name="begin">
<entry>BSP_message(&quot;begin-ENTRY;&quot;);</entry>
<exit>BSP_message(&quot;begin-EXIT;&quot;);</exit>
<tran trig="OPER">
<choice target="../../../../4/6">
<guard brief="e-&gt;key == '-'">Q_EVT_CAST(CalcEvt)-&gt;key_code == KEY_MINUS</guard>
<choice_glyph conn="40,30,5,0,34,15">
<action box="1,0,11,2"/>
</choice_glyph>
</choice>
<choice>
<guard>else</guard>
<choice_glyph conn="40,30,4,-1,-4,4">
<action box="1,-3,6,2"/>
</choice_glyph>
</choice>
<tran_glyph conn="30,30,3,-1,10">
<action box="0,-2,6,2"/>
</tran_glyph>
</tran>
<state_glyph node="30,22,16,10">
<entry box="1,2,5,2"/>
<exit box="1,4,5,2"/>
</state_glyph>
</state>
<state name="result">
<entry>BSP_message(&quot;result-ENTRY;&quot;);</entry>
<exit>BSP_message(&quot;result-EXIT;&quot;);</exit>
<state_glyph node="14,22,10,10">
<entry box="1,2,5,2"/>
<exit box="1,4,5,2"/>
</state_glyph>
</state>
<state_glyph node="8,16,50,18">
<entry box="1,2,5,2"/>
<exit box="1,4,5,2"/>
</state_glyph>
</state>
<state name="operand1">
<entry>BSP_message(&quot;operand1-ENTRY;&quot;);</entry>
<exit>BSP_message(&quot;operand1-EXIT;&quot;);</exit>
<tran trig="CE" target="../../3/5">
<action>BSP_clear();</action>
<tran_glyph conn="26,38,0,3,-14,4">
<action box="0,-2,6,2"/>
</tran_glyph>
</tran>
<tran trig="OPER" target="../../5">
<action>m_op1 = BSP_get_value();
m_oper1 = Q_EVT_CAST(CalcEvt)-&gt;key_code;</action>
<tran_glyph conn="60,64,2,1,6,-2">
<action box="1,0,6,2"/>
</tran_glyph>
</tran>
<tran trig="EQUALS" target="../../3/6">
<tran_glyph conn="10,38,0,3,-12,4">
<action box="0,-2,6,2"/>
</tran_glyph>
</tran>
<state name="zero1">
<entry>BSP_message(&quot;zero1-ENTRY;&quot;);</entry>
<exit>BSP_message(&quot;zero1-EXIT;&quot;);</exit>
<tran trig="DIGIT_0">
<action>;</action>
<tran_glyph conn="12,56,3,-1,10">
<action box="0,-2,7,2"/>
</tran_glyph>
</tran>
<tran trig="DIGIT_1_9" target="../../4">
<action>BSP_insert(Q_EVT_CAST(CalcEvt)-&gt;key_code);</action>
<tran_glyph conn="12,53,3,3,16,-6,2">
<action box="0,-2,9,2"/>
</tran_glyph>
</tran>
<tran trig="POINT" target="../../5">
<action>BSP_insert((int)'0');
BSP_insert((int)'.');</action>
<tran_glyph conn="14,58,2,2,2,40,-2">
<action box="1,0,6,2"/>
</tran_glyph>
</tran>
<state_glyph node="12,45,14,13">
<entry box="1,2,5,2"/>
<exit box="1,4,5,2"/>
</state_glyph>
</state>
<state name="int1">
<entry>BSP_message(&quot;int1-ENTRY;&quot;);</entry>
<exit>BSP_message(&quot;int1-EXIT;&quot;);</exit>
<tran trig="POINT" target="../../5">
<action>BSP_insert((int)'.');</action>
<tran_glyph conn="30,53,3,3,16,-6,2">
<action box="0,-2,6,2"/>
</tran_glyph>
</tran>
<tran trig="DIGIT_0, DIGIT_1_9">
<action>BSP_insert(Q_EVT_CAST(CalcEvt)-&gt;key_code);</action>
<tran_glyph conn="30,56,3,-1,10">
<action box="0,-2,14,2"/>
</tran_glyph>
</tran>
<state_glyph node="30,45,14,13">
<entry box="1,2,5,2"/>
<exit box="1,4,5,2"/>
</state_glyph>
</state>
<state name="frac1">
<entry>BSP_message(&quot;frac1-ENTRY;&quot;);</entry>
<exit>BSP_message(&quot;frac1-EXIT;&quot;);</exit>
<tran trig="POINT">
<action>;</action>
<tran_glyph conn="48,56,3,-1,10">
<action box="0,-2,6,2"/>
</tran_glyph>
</tran>
<tran trig="DIGIT_0, DIGIT_1_9">
<action>BSP_insert(Q_EVT_CAST(CalcEvt)-&gt;key_code);</action>
<tran_glyph conn="48,53,3,-1,10">
<action box="0,-2,15,2"/>
</tran_glyph>
</tran>
<state_glyph node="48,45,14,13">
<entry box="1,2,5,2"/>
<exit box="1,4,5,2"/>
</state_glyph>
</state>
<state name="negated1">
<entry>BSP_message(&quot;negated1-ENTRY;&quot;);
BSP_negate();</entry>
<exit>BSP_message(&quot;negated1-EXIT;&quot;);</exit>
<tran trig="DIGIT_0" target="../../3">
<action>BSP_insert(Q_EVT_CAST(CalcEvt)-&gt;key_code);</action>
<tran_glyph conn="66,57,2,2,4,-44,-3">
<action box="0,0,6,2"/>
</tran_glyph>
</tran>
<tran trig="DIGIT_1_9" target="../../4">
<action>BSP_insert(Q_EVT_CAST(CalcEvt)-&gt;key_code);</action>
<tran_glyph conn="73,57,2,2,5,-35,-4">
<action box="0,0,9,2"/>
</tran_glyph>
</tran>
<tran trig="POINT" target="../../5">
<action>BSP_insert(Q_EVT_CAST(CalcEvt)-&gt;key_code);</action>
<tran_glyph conn="81,57,2,2,6,-25,-5">
<action box="1,0,6,2"/>
</tran_glyph>
</tran>
<tran trig="OPER">
<choice>
<guard>else</guard>
<choice_glyph conn="74,53,4,-1,-4,8">
<action box="1,-4,6,2"/>
</choice_glyph>
</choice>
<choice>
<guard brief="e-&gt;key == '-'">Q_EVT_CAST(CalcEvt)-&gt;key_code == KEY_MINUS</guard>
<action>;</action>
<choice_glyph conn="74,53,5,-1,8">
<action box="1,0,11,2"/>
</choice_glyph>
</choice>
<tran_glyph conn="64,53,3,-1,10">
<action box="0,-2,6,2"/>
</tran_glyph>
</tran>
<state_glyph node="64,45,22,12">
<entry box="1,2,5,2"/>
<exit box="1,4,5,2"/>
</state_glyph>
</state>
<state_glyph node="8,38,80,26">
<entry box="1,2,5,2"/>
<exit box="1,4,5,2"/>
</state_glyph>
</state>
<state name="opEntered">
<entry>BSP_message(&quot;opEntered-ENTRY;&quot;);</entry>
<exit>BSP_message(&quot;opEntered-EXIT;&quot;);</exit>
<tran trig="DIGIT_0" target="../../6/3">
<action>BSP_clear();</action>
<tran_glyph conn="27,82,2,0,2,-5,9">
<action box="1,0,6,2"/>
</tran_glyph>
</tran>
<tran trig="DIGIT_1_9" target="../../6/4">
<action>BSP_clear();
BSP_insert(Q_EVT_CAST(CalcEvt)-&gt;key_code);</action>
<tran_glyph conn="34,82,2,0,11">
<action box="1,0,9,2"/>
</tran_glyph>
</tran>
<tran trig="POINT" target="../../6/5">
<action>BSP_clear();
BSP_insert((int)'0');
BSP_insert((int)'.');</action>
<tran_glyph conn="52,82,2,0,11">
<action box="0,0,6,2"/>
</tran_glyph>
</tran>
<tran trig="OPER">
<choice target="../../../6/6">
<guard brief="e-&gt;key == '-'">Q_EVT_CAST(CalcEvt)-&gt;key_code == KEY_MINUS</guard>
<choice_glyph conn="34,78,5,0,40,15">
<action box="1,0,11,2"/>
</choice_glyph>
</choice>
<choice>
<guard>else</guard>
<choice_glyph conn="34,78,4,-1,-4,4">
<action box="1,-3,6,2"/>
</choice_glyph>
</choice>
<tran_glyph conn="26,78,3,-1,8">
<action box="0,-2,6,2"/>
</tran_glyph>
</tran>
<state_glyph node="26,68,32,14">
<entry box="1,2,5,2"/>
<exit box="1,4,5,2"/>
</state_glyph>
</state>
<state name="operand2">
<entry>BSP_message(&quot;operand2-ENTRY;&quot;);</entry>
<exit>BSP_message(&quot;operand2-EXIT;&quot;);</exit>
<tran trig="CE" target="../../5">
<action>BSP_clear();</action>
<tran_glyph conn="16,86,0,3,-5,8,-5,2">
<action box="0,-4,6,2"/>
</tran_glyph>
</tran>
<tran trig="EQUALS">
<choice target="../../../7">
<guard brief="else"/>
<choice_glyph conn="4,70,5,3,7">
<action box="1,0,6,2"/>
</choice_glyph>
</choice>
<choice target="../../../3/6">
<guard brief="eval()">eval(BSP_get_value(), KEY_NULL)</guard>
<choice_glyph conn="4,70,4,3,-46,10">
<action box="0,-4,10,2"/>
</choice_glyph>
</choice>
<tran_glyph conn="8,102,3,-1,-4,-32">
<action box="-4,-2,6,2"/>
</tran_glyph>
</tran>
<tran trig="OPER">
<choice target="../../../7">
<guard brief="else"/>
<choice_glyph conn="6,79,4,3,-5,5">
<action box="0,-5,6,2"/>
</choice_glyph>
</choice>
<choice target="../../../5">
<guard brief="eval()">eval(BSP_get_value(), Q_EVT_CAST(CalcEvt)-&gt;key_code)</guard>
<choice_glyph conn="6,79,5,3,16,-5,4">
<action box="1,0,12,2"/>
</choice_glyph>
</choice>
<tran_glyph conn="8,98,3,-1,-2,-19">
<action box="-4,-2,6,2"/>
</tran_glyph>
</tran>
<state name="zero2">
<entry>BSP_message(&quot;zero2-ENTRY;&quot;);</entry>
<exit>BSP_message(&quot;zero2-EXIT;&quot;);</exit>
<tran trig="DIGIT_0">
<action>;</action>
<tran_glyph conn="12,104,3,-1,10">
<action box="0,-2,7,2"/>
</tran_glyph>
</tran>
<tran trig="DIGIT_1_9" target="../../4">
<action>BSP_insert(Q_EVT_CAST(CalcEvt)-&gt;key_code);</action>
<tran_glyph conn="12,101,3,3,16,-6,2">
<action box="0,-2,9,2"/>
</tran_glyph>
</tran>
<tran trig="POINT" target="../../5">
<action>BSP_insert((int)'0');
BSP_insert((int)'.');</action>
<tran_glyph conn="14,106,2,2,2,40,-2">
<action box="1,0,6,2"/>
</tran_glyph>
</tran>
<state_glyph node="12,93,14,13">
<entry box="1,2,5,2"/>
<exit box="1,4,5,2"/>
</state_glyph>
</state>
<state name="int2">
<entry>BSP_message(&quot;int2-ENTRY;&quot;);</entry>
<exit>BSP_message(&quot;int2-EXIT;&quot;);</exit>
<tran trig="POINT" target="../../5">
<action>BSP_insert((int)'.');</action>
<tran_glyph conn="30,101,3,3,16,-6,2">
<action box="0,-2,6,2"/>
</tran_glyph>
</tran>
<tran trig="DIGIT_0, DIGIT_1_9">
<action>BSP_insert(Q_EVT_CAST(CalcEvt)-&gt;key_code);</action>
<tran_glyph conn="30,104,3,-1,10">
<action box="0,-2,14,2"/>
</tran_glyph>
</tran>
<state_glyph node="30,93,14,13">
<entry box="1,2,5,2"/>
<exit box="1,4,5,2"/>
</state_glyph>
</state>
<state name="frac2">
<entry>BSP_message(&quot;frac2-ENTRY;&quot;);</entry>
<exit>BSP_message(&quot;frac2-EXIT;&quot;);</exit>
<tran trig="POINT">
<action>;</action>
<tran_glyph conn="48,104,3,-1,10">
<action box="0,-2,6,2"/>
</tran_glyph>
</tran>
<tran trig="DIGIT_0, DIGIT_1_9">
<action>BSP_insert(Q_EVT_CAST(CalcEvt)-&gt;key_code);</action>
<tran_glyph conn="48,101,3,-1,10">
<action box="0,-2,15,2"/>
</tran_glyph>
</tran>
<state_glyph node="48,93,14,13">
<entry box="1,2,5,2"/>
<exit box="1,4,5,2"/>
</state_glyph>
</state>
<state name="negated2">
<entry>BSP_message(&quot;negated2-ENTRY;&quot;);
BSP_negate();</entry>
<exit>BSP_message(&quot;negated2-EXIT;&quot;);</exit>
<tran trig="DIGIT_0" target="../../3">
<action>BSP_insert(Q_EVT_CAST(CalcEvt)-&gt;key_code);</action>
<tran_glyph conn="66,105,2,2,4,-44,-3">
<action box="0,0,6,2"/>
</tran_glyph>
</tran>
<tran trig="DIGIT_1_9" target="../../4">
<action>BSP_insert(Q_EVT_CAST(CalcEvt)-&gt;key_code);</action>
<tran_glyph conn="73,105,2,2,5,-37,-4">
<action box="0,0,9,2"/>
</tran_glyph>
</tran>
<tran trig="POINT" target="../../5">
<action>BSP_insert(Q_EVT_CAST(CalcEvt)-&gt;key_code);</action>
<tran_glyph conn="81,105,2,2,6,-25,-5">
<action box="1,0,6,2"/>
</tran_glyph>
</tran>
<tran trig="OPER">
<choice>
<guard>else</guard>
<choice_glyph conn="74,102,4,-1,-4,8">
<action box="1,-4,6,2"/>
</choice_glyph>
</choice>
<choice>
<guard brief="e-&gt;key == '-'">Q_EVT_CAST(CalcEvt)-&gt;key_code == KEY_MINUS</guard>
<action>;</action>
<choice_glyph conn="74,102,5,-1,8">
<action box="1,0,11,2"/>
</choice_glyph>
</choice>
<tran_glyph conn="64,102,3,-1,10">
<action box="0,-2,6,2"/>
</tran_glyph>
</tran>
<state_glyph node="64,93,22,12">
<entry box="1,2,5,2"/>
<exit box="1,4,5,2"/>
</state_glyph>
</state>
<state_glyph node="8,86,80,26">
<entry box="1,2,5,2"/>
<exit box="1,4,5,2"/>
</state_glyph>
</state>
<state name="error">
<entry>BSP_message(&quot;error-ENTRY;&quot;);</entry>
<exit>BSP_message(&quot;error-EXIT;&quot;);</exit>
<state_glyph node="11,68,9,8">
<entry box="1,2,5,2"/>
<exit box="1,4,5,2"/>
</state_glyph>
</state>
<state_glyph node="2,4,90,110">
<entry box="1,2,5,2"/>
<exit box="1,4,5,2"/>
</state_glyph>
</state>
<state name="final">
<entry>BSP_message(&quot;final-ENTRY;&quot;);
BSP_exit();</entry>
<state_glyph node="2,116,17,6">
<entry box="1,2,5,2"/>
</state_glyph>
</state>
<state_diagram size="96,124"/>
</statechart>
</class>
<attribute name="the_calc" type="QP::QHsm * const" visibility="0x00" properties="0x00">
<documentation>Global opaque pointer to the Calc inst</documentation>
<code>= &amp;Calc::inst;</code>
</attribute>
</package>
<directory name=".">
<file name="calc1.h">
<text>#ifndef calc1_h
#define calc1_h
enum CalcSignals {
C_SIG = QP::Q_USER_SIG,
CE_SIG,
DIGIT_0_SIG,
DIGIT_1_9_SIG,
POINT_SIG,
OPER_SIG,
EQUALS_SIG,
OFF_SIG
};
$declare${Events::CalcEvt}
$declare${SMs::the_calc}
#endif // calc1_h
</text>
</file>
<file name="calc1.cpp">
<text>#include &quot;qpcpp.h&quot; // QP/C++
#include &quot;bsp.h&quot; // board support package
#include &quot;calc1.h&quot; // application
Q_DEFINE_THIS_FILE
#define KEY_NULL '\0'
#define KEY_PLUS '+'
#define KEY_MINUS '-'
#define KEY_MULT '*'
#define KEY_DIVIDE '/'
$declare${SMs::Calc}
$define${SMs::the_calc}
$define(SMs::Calc)</text>
</file>
</directory>
</model>
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