help/info/anytype.html

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  13 <title>anytype</title>
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  32 <h1>anytype</h1>
  33 <hr align="left" width="75%">
  34 <p>This special type is defined as a shorthand for the union of all known types in a TTCN-3 module. Known types include the following: built-in types, user-defined types, imported ASN.1 and other
  35 imported external types.
  36 <ul>
  37   <li>The fieldnames of the anytype shall be uniquely identified by the corresponding type names using the &quot;dot&quot; notation.</li>
  38 </ul>
  39 <p>Related keywords:</p>
  40 <ul>
  41   <li><a href="union.html"><font face="Courier New" color="#003258" size="4"><b>union</b></font></a> &nbsp;</li>
  42 </ul>
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  46 <table border="0" width="90%" bgcolor="#FFB599" cellpadding="4">
  47   <tr>
  48     <td width="100%">
  49     <h3 align="center"><font face="Courier New" color="#003258" size="5"><b>anytype</b></font></h3>
  50     </td>
  51   </tr>
  52 </table>
  53 </center>
  54 </div>
  55 <p>&nbsp;</p>
  56 <div align="center">
  57 <center>
  58 <table border="0" width="100%" bgcolor="#C9C2BB" cellpadding="4">
  59   <tr>
  60     <td width="100%">
  61     <blockquote>
  62     <p><u>TITAN specific restriction compared to the standard:</u></p>
  63     </blockquote>
  64     <ul>
  65       <li>
  66       <p>&nbsp;<font face="Courier New" size="4"><b>anytype</b></font> can only contain the simple types, the ones defined in the same module and the <b>address</b> type. Imported types are not
  67       included.</p>
  68       </li>
  69       <li>
  70       <p>&nbsp;The types included in the <font face="Courier New" size="4"><b>anytype</b></font> of a module have to be declared by the user, using extension attributes.</p>
  71       </li>
  72     </ul>
  73     </td>
  74   </tr>
  75 </table>
  76 </center>
  77 </div>
  78 <hr align="left" width="50%">
  79 <p>Example 1:
  80 <p><font face="Courier New">module example {<br>
  81 type float MyFloat;<br>
  82 type charstring MyString;<br>
  83 type record MyRecord {<br>
  84 &nbsp;&nbsp;&nbsp;integer i,<br>
  85 &nbsp;&nbsp;&nbsp;float f<br>
  86 }<br>
  87 ...</font>
  88 <p><font face="Courier New">control {<br>
  89 &nbsp;&nbsp;&nbsp;var anytype v_any;<br>
  90 &nbsp;&nbsp;&nbsp;v_any.integer := 3;<br>
  91 &nbsp;&nbsp;&nbsp;v_any.charstring := "hello";<br>
  92 &nbsp;&nbsp;&nbsp;v_any.MyRecord := { i := 42, f := 0.5};<br>
  93 ...<br>
  94 &nbsp;&nbsp;&nbsp;v_any.integer := v_any.MyRecord.i - 2;<br>
  95 }<br>
  96 }<br>
  97 with {<br>
  98 extension "anytype integer, charstring, MyRecord" }<br>
  99 </font>
 100 <p><font face="Courier New" size="4"><b>anytype</b></font> is defined to contain 3 types: integer, charstring and the MyRecord type.<br>
 101 The type MyFloat will not be a part of the anytype.<br>
 102 3 is assigned to the integer part of v_any making it hold an integer value.<br>
 103 "hello" is assigned to the charstring part of v_any making it hold a charstring value.<br>
 104 A record is assigned to the MyRecord part of v_any making it hold a MyRecord value.<br>
 105 The MyRecord contents of v_any is read and after decreasing it with 2 it is assigned to the integer part of v_any.<br>
 106 <hr align="left" width="25%">
 107 <hr align="left" width="25%">
 108 <p><a HREF="BNF.html#anytypekeyword">BNF definition</a> of <font face="Courier New">anytype</font></p>
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