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<br /><table class="width100" cellspacing="1"><tr><td class="form-title" colspan="6"><div class="center">ETSI's Bug Tracker - TTCN-3 Change Requests</div></td></tr><tr><td class="form-title" colspan="6">View Issue Details</td></tr><tr><td class="print-spacer" colspan="6"><hr size="1" /></td></tr><tr class="print-category"><td class="print" width="16%">ID</td><td class="print" width="16%">Project</td><td class="print" width="16%">Category</td><td class="print" width="16%">View Status</td><td class="print" width="16%">Date Submitted</td><td class="print" width="16%">Last Update</td></tr><tr class="print"><td class="print">0008112</td><td class="print">TTCN-3 Change Requests</td><td class="print">New Feature</td><td class="print">public</td><td class="print">17-08-2022 07:12</td><td class="print">23-01-2024 09:57</td></tr><tr><td class="print-spacer" colspan="6"><hr size="1" /></td></tr><tr class="print"><td class="print-category">Reporter</td><td class="print">Matthias Simon</td><td class="print" colspan="4">&#160;</td></tr><tr class="print"><td class="print-category">Assigned To</td><td class="print">Tomas Urban</td><td class="print" colspan="4">&#160;</td></tr><tr class="print"><td class="print-category">Priority</td><td class="print">normal</td><td class="print-category">Severity</td><td class="print">minor</td><td class="print-category">Reproducibility</td><td class="print">have not tried</td></tr><tr class="print"><td class="print-category">Status</td><td class="print">closed</td><td class="print-category">Resolution</td><td class="print">won't fix</td><td class="print" colspan="2">&#160;</td></tr><tr class="print"><td class="print-category">Platform</td><td class="print"></td><td class="print-category">OS</td><td class="print"></td><td class="print-category">OS Version</td><td class="print"></td></tr><tr class="print"><td class="print-category">Clause Reference(s)</td><td class="print" colspan="4">Core Language Spec</td></tr><tr class="print"><td class="print-category">For STF discussion</td><td class="print" colspan="4"></td></tr><tr class="print"><td class="print-category">Source  (company  - Author)</td><td class="print" colspan="4">Nokia -- Matthias Simon</td></tr><tr><td class="print-spacer" colspan="6"><hr size="1" /></td></tr><tr class="print"><td class="print-category">Summary</td><td class="print" colspan="5">0008112: Combine boolean and bitwise operators.</td></tr><tr class="print"><td class="print-category">Description</td><td class="print" colspan="5">Currently TTCN-3 distinguishes between boolean operators (and, or, not, ...) and bitwise operators (xor4b, and4b, or4b, not4b, ...) for bit string types.<br />
&#160;<br />
Combining those operators would reduce diversity towards a simpler TTCN-3 grammar.<br />
<br />
Examples:<br />
<br />
&#160;&#160;&#160;&#160;0b'1100' xor 0b'1010' // 0b'0110'<br />
&#160;&#160;&#160;&#160;false xor false       // false<br />
&#160;&#160;&#160;&#160;true xor false        // true<br />
<br />
<br />
The original bitwise operators would be deprecated.</td></tr><tr class="print"><td class="print-category">Steps To Reproduce</td><td class="print" colspan="5"></td></tr><tr class="print"><td class="print-category">Additional Information</td><td class="print" colspan="5"></td></tr><tr class="print"><td class="print-category">Tags</td><td class="print" colspan="5">No tags attached.</td></tr><tr class="print"><td class="print-category">Relationships</td><td class="print" colspan="5"></td></tr><tr class="print"><td class="print-category">Attached Files</td><td class="print" colspan="5"></td></tr><tr><td class="print-spacer" colspan="6"><hr size="1" /></td></tr><tr><td class="form-title">Issue History</td></tr><tr class="print-category"><td class="row-category-history">Date Modified</td><td class="row-category-history">Username</td><td class="row-category-history">Field</td><td class="row-category-history">Change</td></tr><tr class="print"><td class="print">17-08-2022 07:12</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=1237">Matthias Simon</a></td><td class="print">New Issue</td><td class="print"></td></tr><tr class="print"><td class="print">17-08-2022 10:04</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=82">Jens Grabowski</a></td><td class="print">Assigned To</td><td class="print"> =&gt; Tomas Urban</td></tr><tr class="print"><td class="print">17-08-2022 10:04</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=82">Jens Grabowski</a></td><td class="print">Status</td><td class="print">new =&gt; assigned</td></tr><tr class="print"><td class="print">17-08-2022 10:07</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=82">Jens Grabowski</a></td><td class="print">Note Added: 0016229</td><td class="print"></td></tr><tr class="print"><td class="print">09-11-2022 11:33</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=659">Tomas Urban</a></td><td class="print">Note Added: 0016273</td><td class="print"></td></tr><tr class="print"><td class="print">09-11-2022 12:46</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=82">Jens Grabowski</a></td><td class="print">Note Added: 0016279</td><td class="print"></td></tr><tr class="print"><td class="print">09-11-2022 12:46</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=82">Jens Grabowski</a></td><td class="print">Note Added: 0016280</td><td class="print"></td></tr><tr class="print"><td class="print">09-11-2022 12:46</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=82">Jens Grabowski</a></td><td class="print">Status</td><td class="print">assigned =&gt; closed</td></tr><tr class="print"><td class="print">09-11-2022 12:46</td><td class="print"><a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=82">Jens Grabowski</a></td><td class="print">Resolution</td><td class="print">open =&gt; won't fix</td></tr></table>
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				(0016229)
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				<a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=82">Jens Grabowski</a>&#160;&#160;&#160;
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				17-08-2022 10:07&#160;&#160;&#160;
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				TTF discussion: &quot;Merging&quot; of all operators should be checked.			</td>
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				(0016273)
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				<a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=659">Tomas Urban</a>&#160;&#160;&#160;
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				09-11-2022 11:33&#160;&#160;&#160;
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				Input for discussion:<br />
Impossible to achieve as proposed as the change would break operator precedence.<br />
Simplification in java/C++/C# style is possible for logical operators: &amp;&amp;, ||, ! (^^ could be introduced for logical xor) and most of bitwise operators: |, ^, ~<br />
A similar change is problematic for bitwise operators as &amp; is used for concatenation with a similar scope. Could be resolved with a different symbol, such as #, $ or combination of symbols e.g. :&amp;			</td>
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				(0016279)
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				<a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=82">Jens Grabowski</a>&#160;&#160;&#160;
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				09-11-2022 12:46&#160;&#160;&#160;
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				TTF discussion: Operators are in use and a change would not be backwards compatible. Therefore the change cannot be done.			</td>
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				(0016280)
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				<a href="http://oldforge.etsi.org/mantis/view_user_page.php?id=82">Jens Grabowski</a>&#160;&#160;&#160;
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				09-11-2022 12:46&#160;&#160;&#160;
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				Non backwards compatible change.			</td>
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