help/info/private.html

   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>private</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="port.html" alt="previous"><img border="0" src="../images/left.jpg" width="53" height="40"></a></td>
  26     <td><a href="procedure.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>private</h1>
  33 <hr align="left" width="75%">
  34 <p>Private is a visibility modifier, that can be attached to definitions on module level, or in component types.
  35 It means:
  36 <ul>
  37   <li>on module level: the definition is only visible inside the same module.
  38   <li>in a component type: the definition is only visible via the runs on scope in functions/altsteps/testcases if the runs on clause is directly referring to the component type.
  39 </ul>
  40 <p>Related keywords:</p>
  41 <ul>
  42   <li><a href="friend.html"><b><font face="Courier New" color="#003258" size="4">friend</font></b></a></li>
  43   <li><a href="public.html"><b><font face="Courier New" color="#003258" size="4">public</font></b></a></li>
  44 </ul>
  45 <hr align="left" width="50%">
  46 <div align="center">
  47 <center>
  48 <table border="0" width="90%" bgcolor="#FFB599" cellpadding="4">
  49   <tr>
  50     <td width="100%">
  51     <h3 align="center"><font face="Courier New" color="#003258" size="5"><b>private definition;</b></font></h3>
  52     </td>
  53   </tr>
  54 </table>
  55 </center>
  56 </div>
  57 <hr align="left" width="50%">
  58 <p>Example 1:
  59 <p><font face="Courier New">module module1 {<br>
  60 import from module2 all;<br>
  61 <br>
  62 const module2Type c_example1 := 4; //by default public, visible<br>
  63 const module2PublieType c_example2 := 4; //public, visible<br>
  64 const module2FriendType c_example3 := 4; //this is a friend module, visible<br>
  65 const module2PrivateType c_example4 := 4; //ERROR, not visible<br>
  66 }</font>
  67 <p><font face="Courier New">module module2 {<br>
  68 friend module1;<br>
  69 <br>
  70 type integer module2Type;//by default public, visible in every module<br>
  71 public type integer module2PublieType; //public, visible in every module<br>
  72 friend type integer module2FriendType; //friend, visible only in friend modules<br>
  73 private type module2PrivateType; //private, visible only in this module<br>
  74 }</font>
  75 <hr align="left" width="25%">
  76 <hr align="left" width="25%">
  77 </body>
  78 </html>