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<!--
Copyright (c) 2000-2021 Ericsson Telecom AB
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which accompanies this distribution, and is available at
https://www.eclipse.org/org/documents/epl-2.0/EPL-2.0.html
Contributors:
Baji, Laszlo
Balasko, Jeno
Farkas, Laszlo
Raduly, Csaba
Szabados, Kristof
Szabo, Janos Zoltan – initial implementation
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<p><br clear="all">
</p>
<hr>
<h1>import</h1>
<hr align="left" width="75%">
<p>The statement makes it possible to <a href="#selective"> reuse all</a> or <a href="#selective">some of the definitions</a> specified in the module definitions part of a different module.</p>
<ul>
<li><a name="stop_all">The</a> keyword <a href="objid.html"><b><font face="Courier New" color="#003258" size="4">objid</font></b></a> is optionally used when the source <a href="#timer_start">module
has an object identifier</a>.</li>
<li><a name="stop_all">The</a> keyword <a href="language.html"><b><font face="Courier New" color="#003258" size="4">language</font></b></a> is used when importing <a href="#default">from a
non-TTCN-3 module</a>.</li>
<li><a name="stop_all">The</a> keyword <a href="except.html"><b><font face="Courier New" color="#003258" size="4">except</font></b></a> is used when there is a need <a href="#default">to
exclude some of the definitions</a> from the import.</li>
<li>
<p>The keyword <a href="recursive.html"><font face="Courier New" size="4"><b>recursive</b></font> </a> means that every definition required by the specified definitions must also be imported. It
can only be used with selective import.</p>
</li>
</ul>
<p>Related keywords:</p>
<ul>
<li><a href="all.html"><b><font face="Courier New" color="#003258" size="4">all</font></b></a></li>
<li><a href="except.html"><b><font face="Courier New" color="#003258" size="4">except</font></b></a></li>
<li><a href="from.html"><b><font face="Courier New" color="#003258" size="4">from</font></b></a></li>
<li><a href="language.html"><b><font face="Courier New" color="#003258" size="4">language</font></b></a></li>
<li><a href="language.html"><b><font face="Courier New" color="#003258" size="4">objid</font></b></a></li>
</ul>
<hr align="left" width="50%">
<p>1. <a name="timer">Importing everything from a module</a></p>
<div align="center">
<center>
<table border="0" width="90%" bgcolor="#FFB599" cellpadding="4">
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<td width="100%">
<h3 align="center"><font face="Courier New" color="#003258" size="5"><b>import from </b></font><i>module_identifier</i> [<font face="Courier New" color="#003258" size="5"><b>.objid(</b></font><i>object_identifier</i><font
face="Courier New" color="#003258" size="5"><b>)</b></font> ] [ <font face="Courier New" color="#003258" size="5"><b>language "</b></font><i>language_identifier</i><font face="Courier New"
color="#003258" size="5"><b>"</b></font> ] <font face="Courier New" color="#003258" size="5"><b>all;</b></font></h3>
</td>
</tr>
</table>
</center>
</div>
<ul>
<li>
<p><font face="Courier New" size="4"><b>import from</b></font> is a keyword of two parts, they together introduce the import definition.</p>
</li>
<li>
<p><i>module_identifier</i> is the name used to refer to the module where the definitions are imported from. It must begin with a letter, may contain letters, numbers and underscore
characters.</p>
</li>
</ul>
<table border="0" width="100%" bgcolor="#C9C2BB" cellpadding="4">
<tr>
<td width="100%">
<blockquote>
<p><u>TITAN specific restriction compared to the standard:</u></p>
</blockquote>
<ul>
<li>
<p> <font face="Courier New" size="4"><b>objid(</b></font><i>object_identifier</i><font face="Courier New" size="4"><b>)</b></font> is not implemented. When encountered in the TTCN-3
program, it will be discarded without evaluation.</p>
</li>
</ul>
</td>
</tr>
</table>
<ul>
<li>
<p><font face="Courier New" size="4"><b>language</b></font><font face="Courier New" color="#003258" size="5"><b>"</b></font><i>language_identifier</i><font face="Courier New"
color="#003258" size="5"><b>"</b></font> is used when definitions are imported from sources other than TTCN-3 modules to denote the language (=<i>language_identifier</i>) of that source.</p>
</li>
<li>
<p><font face="Courier New" size="4"><b>all</b></font> means that every definition must be imported from the source.</p>
</li>
</ul>
<hr align="left" width="50%">
<p><a name="timer_start">Example 1a</a>:
<p><font face="Courier New">import from Ce_mod all;<br>
</font>
<p>All definitions from the module Ce_mod will be imported.</p>
<hr align="left" width="50%">
<p><a name="timer_start">Example 1b</a>:
<p><font face="Courier New">import from Ia_mod.objid{0 4 0 127 5 0} all;<br>
</font>
<p>All definitions will be imported from the module Ia_mod with the object identifier 0.4.0.127.5.0 in the module name.</p>
<hr align="left" width="50%">
<p><a name="default">Example 1c:</a>
<p><font face="Courier New">import from Muj_mod language "ASN.1:2002" all;<br>
</font>
<p>All definitions from the module Muj_mod written in the 2002 version of ASN.1 will be imported.</p>
<hr align="left" width="75%">
<p>2. <a name="selective">Selective import</a></p>
<table border="0" width="100%" bgcolor="#C9C2BB" cellpadding="4">
<tr>
<td width="100%">
<blockquote>
<p><u>TITAN specific restriction compared to the standard:</u></p>
</blockquote>
<p> Selective import is not implemented. When encountered in the TTCN-3 program, it will be treated as a statement for importing all definitions.</p>
</td>
</tr>
</table>
<p> </p>
<div align="center">
<center>
<table border="0" width="90%" bgcolor="#FFB599" cellpadding="4">
<tr>
<td width="100%">
<h3 align="center"><font face="Courier New" color="#003258" size="5"><b>import from </b></font><i>module_identifier</i> [<font face="Courier New" color="#003258" size="5"><b>.objid(</b></font><i>object_identifier</i><font
face="Courier New" color="#003258" size="5"><b>)</b></font> ] [ <font face="Courier New" color="#003258" size="5"><b>language "</b></font><i>language_identifier</i><font face="Courier New"
color="#003258" size="5"><b>"</b></font> ] <font face="Courier New" color="#003258" size="5"><b>all except {</b></font><i>exception_list</i><font face="Courier New" color="#003258" size="5"><b>};</b></font>
</h3>
</td>
</tr>
</table>
</center>
</div>
<ul>
<li>
<p><font face="Courier New" size="4"><b>import from</b></font> is a keyword of two parts, they together introduce the import definition.</p>
</li>
<li>
<p><i>module_identifier</i> is the name used to refer to the module where the definitions are imported from. It must begin with a letter, may contain letters, numbers and underscore
characters.</p>
</li>
</ul>
<table border="0" width="100%" bgcolor="#C9C2BB" cellpadding="4">
<tr>
<td width="100%">
<blockquote>
<p><u>TITAN specific restriction compared to the standard:</u></p>
</blockquote>
<ul>
<li>
<p> <font face="Courier New" size="4"><b>objid(</b></font><i>object_identifier</i><font face="Courier New" size="4"><b>)</b></font> is not implemented. When encountered in the TTCN-3
program, it will be discarded without evaluation.</p>
</li>
</ul>
</td>
</tr>
</table>
<ul>
<li>
<p><font face="Courier New" size="4"><b>language</b></font><font face="Courier New" color="#003258" size="5"><b> "</b></font><i>language_identifier</i><font face="Courier New"
color="#003258" size="5"><b>"</b></font> is used when definitions are imported from sources other than TTCN-3 modules to denote the language (=<i>language_identifier</i>) of that source.</p>
</li>
<li>
<p><font face="Courier New" size="4"><b>all</b></font> means that every definition must be imported from the source.</p>
</li>
<li><font face="Courier New" size="4"><b>except</b></font><font face="Courier New" color="#003258" size="5"><b> {</b></font><i>exception_list</i><font face="Courier New" color="#003258"
size="5"><b>}</b></font> is used to exclude some of the definitions of the source module. <br>
<i>exception_list</i> may contain one of the following definitions: modulepar | const | type | signature | template | function | altstep | testcase | group. <br>
It is possible to list several restrictions of the same type separated by comma and enumerate several types of restrictions separated by semicolon..</li>
</ul>
<hr align="left" width="50%">
<p><a name="except">Example 2a:</a>
<p><font face="Courier New">import from Min_mod all except {testcase tc_one, tc_deux; function f_tre()};<br>
</font>
<p>All definitions from the module Min_mod will be imported except the test cases tc_one and tc_deux as well as the function f_tre().</p>
<hr align="left" width="50%" color="#0094D2">
<div align="center">
<center>
<table border="0" width="90%" bgcolor="#FFB599" cellpadding="4">
<tr>
<td width="100%">
<h3 align="center"><font face="Courier New" color="#003258" size="5"><b>import from </b></font><i>module_identifier</i> [<font face="Courier New" color="#003258" size="5"><b>.objid(</b></font><i>object_identifier</i><font
face="Courier New" color="#003258" size="5"><b>)</b></font> ] [ <font face="Courier New" color="#003258" size="5"><b>language "</b></font><i>language_identifier</i><font face="Courier New"
color="#003258" size="5"><b>"</b></font> ] [ <font face="Courier New" color="#003258" size="5"><b>recursive</b></font> ]<font face="Courier New" color="#003258" size="5"><b>
{</b></font><i>importation_list</i><font face="Courier New" color="#003258" size="5"><b>};</b></font></h3>
</td>
</tr>
</table>
</center>
</div>
<ul>
<li>
<p><font face="Courier New" size="4"><b>import from</b></font> is a keyword of two parts, they together introduce the import definition.</p>
</li>
<li>
<p><i>module_identifier</i> is the name used to refer to the module where the definitions are imported from. It must begin with a letter, may contain letters, numbers and underscore
characters.</p>
</li>
</ul>
<table border="0" width="100%" bgcolor="#C9C2BB" cellpadding="4">
<tr>
<td width="100%">
<blockquote>
<p><u>TITAN specific restriction compared to the standard:</u></p>
</blockquote>
<ul>
<li>
<p> <font face="Courier New" size="4"><b>objid(</b></font><i>object_identifier</i><font face="Courier New" size="4"><b>)</b></font> is not implemented. When encountered in the TTCN-3
program, it will be discarded without evaluation.</p>
</li>
</ul>
</td>
</tr>
</table>
<ul>
<li>
<p><font face="Courier New" size="4"><b>language</b></font><font face="Courier New" color="#003258" size="5"><b> "</b></font><i>language_identifier</i><font face="Courier New"
color="#003258" size="5"><b>"</b></font> is used when definitions are imported from sources other than TTCN-3 modules to denote the language (=<i>language_identifier</i>) of that source.</p>
</li>
<li>
<p><font face="Courier New" size="4"><b>recursive</b></font> means that every definition required by the specified definitions must also be imported.</p>
</li>
<li><i>importation_list</i> is used to enumerate the definitions of the source module to be imported. <br>
It may contain one of the following definitions: modulepar | const | type | signature | template | function | altstep | testcase | group. <br>
It is possible to list several definitions of the same type separated by comma and enumerate several types of definitions separated by semicolon..</li>
</ul>
<hr align="left" width="50%">
<p><a name="list">Example 2b:</a>
<p><font face="Courier New">import from Mon_Mod {const c_derde, c_fjaerde; var v_cinquieme; template all};</font>
<p>The constants c_derde and c_fjaerde as well as the variable v_cinquieme together with all templates will be imported from the module Mon_mod.</p>
<hr align="left" width="50%">
<p><a name="recursive">Example 2c:</a>
<p><font face="Courier New">import from Mon_Mod recursive {const c_hetedik};</font>
<p>The constant c_hetedik will be imported from the module Mon_mod along with the definitions required by c_hetedik.</p>
<hr align="left" width="75%">
<p>3. <a name="timer">Importing of import statements</a></p>
<div align="center">
<center>
<table border="0" width="90%" bgcolor="#FFB599" cellpadding="4">
<tr>
<td width="100%">
<h3 align="center"><font face="Courier New" color="#003258" size="5"><b>import from </b></font><i>module_identifier</i> [<font face="Courier New" color="#003258" size="5"><b>.objid(</b></font><i>object_identifier</i><font
face="Courier New" color="#003258" size="5"><b>)</b></font> ] [ <font face="Courier New" color="#003258" size="5"><b>language "</b></font><i>language_identifier</i><font face="Courier New"
color="#003258" size="5"><b>"</b></font> ] <font face="Courier New" color="#003258" size="5"><b>{ import all; }</b></font></h3>
</td>
</tr>
</table>
</center>
</div>
<ul>
<li>
<p><font face="Courier New" size="4"><b>import from</b></font> is a keyword of two parts, they together introduce the import definition.</p>
</li>
<li>
<p><i>module_identifier</i> is the name used to refer to the module where the definitions are imported from. It must begin with a letter, may contain letters, numbers and underscore
characters.</p>
</li>
</ul>
<table border="0" width="100%" bgcolor="#C9C2BB" cellpadding="4">
<tr>
<td width="100%">
<blockquote>
<p><u>TITAN specific restriction compared to the standard:</u></p>
</blockquote>
<ul>
<li>
<p> <font face="Courier New" size="4"><b>objid(</b></font><i>object_identifier</i><font face="Courier New" size="4"><b>)</b></font> is not implemented. When encountered in the TTCN-3
program, it will be discarded without evaluation.</p>
</li>
</ul>
</td>
</tr>
</table>
<ul>
<li>
<p><font face="Courier New" size="4"><b>language</b></font><font face="Courier New" color="#003258" size="5"><b>"</b></font><i>language_identifier</i><font face="Courier New"
color="#003258" size="5"><b>"</b></font> is used when definitions are imported from sources other than TTCN-3 modules to denote the language (=<i>language_identifier</i>) of that source.</p>
</li>
<li>
<p><font face="Courier New" size="4"><b>import all</b></font> means that every visible<a href="#visible"><sup>*</sup></a> import statement must be imported from the source.</p>
</li>
</ul>
<hr align="left" width="50%">
<p><a name="timer_start">Example 1a</a>:
<p><font face="Courier New">import from G_mod { import all };<br>
</font>
<p>All visible import statements from the module G_mod will be imported.
This has the same effect as if the visible import statements of module G_mod were copied into the importing module.</p>
<hr align="left" width="75%">
<a name="visible">Note that the visibility of import statements is by default <a href="private.html">private</a>.
For an import statement to be visible, it must be made <a href="public.html">public</a>, or the importing module
has to be declared as <a href="friend.html">friend</a> of the module containing the import statement.</a>
<p><a HREF="BNF.html#importdef">BNF definition</a> of <font face="Courier New">import</font></p>
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