https://ascend4.org/api.php?action=feedcontributions&feedformat=atom&user=Ondrej 2026-04-28T23:03:36Z User contributions MediaWiki 1.43.6 https://ascend4.org/index.php?title=User:Ondrej&diff=710 2010-05-26T09:53:05Z

<p>Ondrej: </p> <hr /> <div>'''Ondrej Krc-Jediny'''<br /> <br /> Proposal: http://socghop.appspot.com/gsoc/student_project/show/google/gsoc2010/ascend/t127230757738<br /> <br /> Mentor: [[Ben Allan]].<br /> <br /> Subversion branch: {{srcbranch|ondrej|}}<br /> <br /> == Project description ==<br /> <br /> Goal of this project is to create a prototype implementation of possible new ASCEND<br /> compiler. Current compiler is highly effective, coded using Flex/Bison, but has a huge and<br /> difficult code, that is hard to understand and extend. Being a critical part, compiler code<br /> needs to be high quality with no (or least possible amount of) errors and bugs. That is still<br /> harder to achieve in current vast situation. Using more modern language description and<br /> parser generation tool like ANTLR, the listed issues can be resolved. ANTLR, having very<br /> good GUI-based development environment, active community and various output languages<br /> can result in a modular, maintainable and fast compiler. Additionally, some of the<br /> objectives of next-generation ASCEND syntax can be incorporated in the solution and tried<br /> out.<br /> <br /> == Tasks ==<br /> <br /> Create ANTLR parser of ascend4 language - rewrite Flex/Bison rules to more readable<br /> ANTLR'sExtended Backus-Naur Form. By doing this, obtain an AST (Abstract Syntax Tree<br /> ). This will also result in getting rid of much of the code behind Bison rules. Pass the AST<br /> to ANTLR-created semantic analysis filters. Additionally, extend the existing parser with<br /> next-generation parser ideas - at least some syntax ideas like respelling the pedantic<br /> keyword style, moving the language to look more like modern programming languages, etc.<br /> Create tree walker converting ascend4 tree to the extended grammar trees. Test the solution<br /> on a reasonable amount of test input. If there is time left, start incorporating the solution<br /> into the existing C-based system.<br /> <br /> == Milestones == <br /> <br /> Finish the ascend4 parser including semantic analysis filters by mid-term. By the end, test<br /> the parser thoroughly and work on the new ideas. Complete as many as possible, resulting<br /> in a solid and compact prototype for a new compiler implementation.<br /> <br /> [[Category:GSOC2010]]</div>

Ondrej https://ascend4.org/index.php?title=User:Ondrej&diff=704 2010-05-26T09:47:51Z

<p>Ondrej: </p> <hr /> <div>'''Ondrej Krc-Jediny'''<br /> <br /> Proposal: http://socghop.appspot.com/gsoc/student_project/show/google/gsoc2010/ascend/t127230757738<br /> <br /> Mentor: [[Ben Allan]].<br /> <br /> Subversion branch: {{srcbranch|ondrej|}}<br /> <br /> [[Category:GSOC2009]]</div>

Ondrej https://ascend4.org/index.php?title=User:Ondrej&diff=703 2010-05-26T09:41:14Z

<p>Ondrej: Created page with &#039; Category:GSOC2009&#039;</p> <hr /> <div><br /> <br /> <br /> [[Category:GSOC2009]]</div>

Ondrej