projects / deliverable / titan.core.git / blame
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1 | <!-- |
| 2 | Copyright (c) 2000-2014 Ericsson Telecom AB | |
| 3 | ||
| 4 | All rights reserved. This program and the accompanying materials | |
| 5 | are made available under the terms of the Eclipse Public License v1.0 | |
| 6 | which accompanies this distribution, and is available at | |
| 7 | http://www.eclipse.org/legal/epl-v10.html | |
| 8 | --> | |
| 9 | <html> | |
| 10 | <head> | |
| 11 | <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> | |
| 12 | <meta http-equiv="Content-Language" content="en-us"> | |
| 13 | <title>with</title> | |
| 14 | </head> | |
| 15 | <body bgcolor="#DAD3C5" vlink="#0094D2" link="#003258"> | |
| 16 | <table align="left" border="0" cellspacing="0" cellpadding="0" valign=top> | |
| 17 | <tr> | |
| 18 | <td width=105 height=40><a href="https://projects.eclipse.org/projects/tools.titan"><img src="../images/titan_transparent.gif" border=0 width=105 height=40 align="left" alt="Titan"></a></td> | |
| 19 | </tr> | |
| 20 | </table> | |
| 21 | <table border="0" align="right" cellpadding="0" cellspacing="0"> | |
| 22 | <tr> | |
| 23 | <td><a href="../titan_main.html" alt="contents"><img border="0" src="../images/ao.jpg" width="53" height="40"></a></td> | |
| 24 | <td><a href="../titan_index.html" alt="index"><img border="0" src="../images/up.jpg" width="53" height="40"></a></td> | |
| 25 | <td><a href="while.html" alt="previous"><img border="0" src="../images/left.jpg" width="53" height="40"></a></td> | |
| 26 | <td><a href="xor.html" alt="next"><img border="0" src="../images/right.jpg" width="53" height="40"></a></td> | |
| 27 | </tr> | |
| 28 | </table> | |
| 29 | <p><br clear="all"> | |
| 30 | </p> | |
| 31 | <hr> | |
| 32 | <h1>with</h1> | |
| 33 | <hr align="left" width="75%"> | |
| 34 | <p>The statement is used to associate attributes with TTCN-3 language elements. The syntax for the argument of the statement (i.e. the actual attributes) is defined as a free text string. | |
| 35 | <p>There are four kinds of attributes: | |
| 36 | <ul> | |
| 37 | <li><b><font face="Courier New" color="#003258" size="4">display</font></b>: allows the specification of display attributes related to specific presentation formats; </li> | |
| 38 | <li><b><font face="Courier New" color="#003258" size="4">encode</font></b>: allows references to specific encoding rules; </li> | |
| 39 | <li><b><font face="Courier New" color="#003258" size="4">variant</font></b>: allows references to specific encoding variants; </li> | |
| 40 | <li><b><font face="Courier New" color="#003258" size="4">extension</font></b>: allows the specification of user-defined attributes.</li> | |
| 41 | </ul> | |
| 42 | <p>Related keywords:</p> | |
| 43 | <ul> | |
| 44 | <li><a href="display.html"><b><font face="Courier New" color="#003258" size="4">display</font></b></a></li> | |
| 45 | <li><a href="encode.html"><b><font face="Courier New" color="#003258" size="4">encode</font></b></a></li> | |
| 46 | <li><a href="extension.html"><b><font face="Courier New" color="#003258" size="4">extension</font></b></a></li> | |
| 47 | <li><a href="override.html"><b><font face="Courier New" color="#003258" size="4">override</font></b></a></li> | |
| 48 | <li><a href="variant.html"><b><font face="Courier New" color="#003258" size="4">variant</font></b></a>:</li> | |
| 49 | </ul> | |
| 50 | <hr align="left" width="50%"> | |
| 51 | <div align="center"> | |
| 52 | <center> | |
| 53 | <table border="0" width="90%" bgcolor="#FFB599" cellpadding="4"> | |
| 54 | <tr> | |
| 55 | <td width="100%"> | |
| 56 | <h3 align="center"><font face="Courier New" color="#003258" size="5"><b>with { display</b></font> | <font face="Courier New" color="#003258" size="5"><b>encode</b></font> | <font | |
| 57 | face="Courier New" color="#003258" size="5"><b>variant</b></font> | <font face="Courier New" color="#003258" size="5"><b>extension</b></font> [ <font face="Courier New" color="#003258" size="5"><b>override</b></font> | |
| 58 | ] [ <font face="Courier New" color="#003258" size="5"><b>(</b></font><i>qualifier</i><font face="Courier New" color="#003258" size="5"><b>)</b></font> ] <font face="Courier New" color="#003258" | |
| 59 | size="5"><b>"</b></font><i>argument</i><b><font face="Courier New" color="#003258" size="5">"};</font></b></h3> | |
| 60 | </td> | |
| 61 | </tr> | |
| 62 | </table> | |
| 63 | </center> | |
| 64 | </div> | |
| 65 | <ul> | |
| 66 | <li> | |
| 67 | <p>the optional <b><font face="Courier New">override</font></b> directive forces all contained types at all lower scopes to be forced to the specified attribute.</p> | |
| 68 | </li> | |
| 69 | <li> | |
| 70 | <p>the optional <i>qualifier</i> points out the entity for which the argument is valid.</p> | |
| 71 | </li> | |
| 72 | <li> | |
| 73 | <p><i>argument</i> is a free-text string specifying the actual attribute.</p> | |
| 74 | </li> | |
| 75 | </ul> | |
| 76 | <p>It is possible to specify several arguments in one <b><font face="Courier New">with</font></b> statement by using semicolons to separate the groups of the attribute keyword, qualifier and | |
| 77 | argument. <br> | |
| 78 | When an attribute has more than one arguments, the arguments are separated by commas.</p> | |
| 79 | <hr align="left" width="50%"> | |
| 80 | <p>Example 1: | |
| 81 | <p><font face="Courier New">type record SinlgeRecord { <br> | |
| 82 | bitstring fram,<br> | |
| 83 | bitstring till<br> | |
| 84 | } with { variant (fram) "FIELDLENGTH(2)" }</font> | |
| 85 | <p>The first field of the record (fram) will be coded on 2 bits.</p> | |
| 86 | <hr align="left" width="25%"> | |
| 87 | <p>Example 2: | |
| 88 | <p><font face="Courier New">type octetstring OCT10 with { variant "ALIGN(left)"; variant "FIELDLENGTH(10)" }</font> | |
| 89 | <p>The octetstring OCT10 will be coded left-aligned on ten bits.</p> | |
| 90 | <hr align="left" width="25%"> | |
| 91 | <p>Example 3: | |
| 92 | <p><font face="Courier New">type integer NewInt with { variant "FIELDLENGTH(8), BITORDERINFIELD(msb)" }</font> | |
| 93 | <p>The type NewInt will be coded on eight bit and the most significant bit will be sent first.</p> | |
| 94 | <hr align="left" width="25%"> | |
| 95 | <hr align="left" width="25%"> | |
| 96 | <p><a HREF="BNF.html#withstatement">BNF definition</a> of <font face="Courier New"> with</font></p> | |
| 97 | </body> | |
| 98 | </html> |