help/info/interleave.html

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  13 <title>interleave</title>
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  32 <h1>interleave</h1>
  33 <hr align="left" width="75%">
  34 <p>The statement denotes branching of test behavior due to the reception and handling of communication and/or timer events and/or the termination of parallel test components. The sequence of the
  35 events does not matter. The individual alternatives (or branches) contain an event or &quot;receiving operation&quot;, which can be successful or unsuccessful (&quot;condition&quot;) and end by an
  36 optional statement block.
  37 <p>Opposed to alt statement, where only a single alternative is taken, all branches of the interleave statement must &quot;happen&quot;.
  38 <p>Related keyword:</p>
  39 <ul>
  40   <li><a href="alt.html"><b><font face="Courier New" color="#003258" size="4">alt</font></b></a></li>
  41 </ul>
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  47     <h3 align="left"><font face="Courier New" color="#003258" size="5"><b>interleave {<br>
  48     &nbsp;&nbsp;&nbsp; []</b></font> [<i>condition</i>] <font face="Courier New" color="#003258" size="5"><b>{</b></font> [<i>statement_block</i>] <font face="Courier New" color="#003258" size="5"><b>}<br>
  49     &nbsp;&nbsp;&nbsp; </b></font> ...<font face="Courier New" color="#003258" size="5"><b><br>
  50     };</b></font> &nbsp;</h3>
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  54 </div>
  55 <ul>
  56   <li>
  57   <p>The <font face="Courier New" color="#003258" size="4"><b>interleave</b></font> keywords introduces the branching definition.</p>
  58   </li>
  59   <li>
  60   <p>Each branch begins with a pair of brackets (the brackets must be empty).</p>
  61   </li>
  62   <li>
  63   <p><i>condition</i> may be a communication or a timer event or the termination of a parallel test component. The following operations may be written here: <a href="receive.html"><b><font
  64     face="Courier New" color="#003258" size="4">receive</font></b></a>, <a href="trigger.html"><b><font face="Courier New" color="#003258" size="4">trigger</font></b></a>, <a href="getcall.html"><b><font
  65     face="Courier New" color="#003258" size="4">getcall</font></b></a>, <a href="catch.html"><b><font face="Courier New" color="#003258" size="4">catch</font></b></a>, <a href="check.html"><b><font
  66     face="Courier New" color="#003258" size="4">check</font></b></a>, <a href="timeout.html"><b><font face="Courier New" color="#003258" size="4">timeout</font></b></a> and <a href="done.html"><b><font
  67     face="Courier New" color="#003258" size="4">done</font></b></a>.</p>
  68   </li>
  69   <li>The optional <i>statement_block</i> contains one or more statements separated by semicolons. When empty, the curly brackets must be written.
  70   <P>The use of iterative statements (for, while, do-while, etc.) is forbidden inside the statement block.
  71   <P>Neither direct altstep invocation, nor default activation are permitted.
  72   <P>Function calls, which contain communication operations, shall also be avoided inside the statement block of interleave statement.
  73   </li>
  74   <li>
  75   <p><b>...</b> indicates that&nbsp; several branches may occur in the <font face="Courier New" color="#003258" size="4"><b>interleave</b></font> body. There is no separator between them.</p>
  76   </li>
  77 </ul>
  78 <hr align="left" width="50%">
  79 <p>Example:
  80 <p><font face="Courier New">interleave {&nbsp;<br>
  81 &nbsp;&nbsp;&nbsp;[]&nbsp;L1_PCO.receive &nbsp;&nbsp;(tr_Sig1)<br>
  82 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{&nbsp;<br>
  83 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;L1_PCO.send &nbsp;&nbsp;(t_Sig2);<br>
  84 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;L1_PCO.receive(tr_Sig3)<br>
  85 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;<br>
  86 &nbsp;&nbsp;&nbsp;[] L2_PCO.receive &nbsp;&nbsp;(tr_Sig4)&nbsp;<br>
  87 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{&nbsp;<br>
  88 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;L2_PCO.send &nbsp;&nbsp;(t_Sig5);<br>
  89 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;L2_PCO.receive(tr_Sig6);<br>
  90 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;L2_PCO.send &nbsp;&nbsp;(t_Sig7)<br>
  91 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;<br>
  92 };</font>
  93 <p>The reception events on ports L1_PCO and L2_PCO may happen in arbitrary order. The possible orderings of <i>incoming</i> messages are:
  94 <p><code> tr_Sig1, tr_Sig3, tr_Sig4, tr_Sig6<BR>
  95 tr_Sig1, tr_Sig4, tr_Sig3, tr_Sig6<BR>
  96 tr_Sig1, tr_Sig4, tr_Sig6, tr_Sig3<BR>
  97 tr_Sig4, tr_Sig1, tr_Sig3, tr_Sig6<BR>
  98 tr_Sig4, tr_Sig1, tr_Sig6, tr_Sig3<BR>
  99 tr_Sig4, tr_Sig6, tr_Sig1, tr_Sig3 </code>
 100 <hr align="left" width="25%">
 101 <hr align="left" width="25%">
 102 <p><a HREF="BNF.html#interleavedconstruct">BNF definition</a> of <font face="Courier New"> interleave</font></p>
 103 </body>
 104 </html>