https://wiki.liberty-eiffel.org/index.php?title=Papers&feed=atom&action=historyPapers - Revision history2024-03-28T20:05:54ZRevision history for this page on the wikiMediaWiki 1.37.0https://wiki.liberty-eiffel.org/index.php?title=Papers&diff=2689&oldid=prevHzwakenberg at 12:10, 15 April 20222022-04-15T12:10:44Z<p></p>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category: Literature]]</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>These research papers were written for SmallEiffel and SmartEiffel, but they still give good insights into the workings of Liberty Eiffel.</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>These research papers were written for<ins style="font-weight: bold; text-decoration: none;"> the legacy</ins> SmallEiffel and SmartEiffel<ins style="font-weight: bold; text-decoration: none;"> compilers</ins>, but they still give good insights into the workings of Liberty Eiffel.</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Type Inference for Late Binding. The SmallEiffel Compiler ==</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Type Inference for Late Binding. The SmallEiffel Compiler ==</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>SmallEiffel is an Eiffel compiler which uses a fast simple inference mechanism to remove most late binding calls, replacing them by static bindings. Starting from the system's entry point, it compiles only statically living code, which saves compiling and then removing dead code. As the whole system is analyzed at compile time, multiple inheritance and genericity do not cause any overhead. </div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>SmallEiffel is an Eiffel compiler which uses a fast<ins style="font-weight: bold; text-decoration: none;">,</ins> simple inference mechanism to remove most late binding calls, replacing them by static bindings. Starting from the system's entry point, it compiles only statically living code, which saves compiling and then removing dead code. As the whole system is analyzed at compile time, multiple inheritance and genericity do not cause any overhead. </div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>SmallEiffel features a coding scheme which eliminates the need for virtual function tables. Dynamic dispatch is implemented without any array access but uses a simple static binary branch code. We show that this implementation makes it possible to use modern hardware very efficiently. It also allows to inline more calls even when dynamic dispatch is required. Some more dispatch sites are removed after the type inference algorithm has been performed, if the different branches of a dispatch site lead to the same code. </div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>SmallEiffel features a coding scheme which eliminates the need for virtual function tables. Dynamic dispatch is implemented without any array access<ins style="font-weight: bold; text-decoration: none;">,</ins> but uses a simple static binary branch code. We show that this implementation makes it possible to use modern hardware very efficiently. It also allows to inline more calls even when dynamic dispatch is required. Some more dispatch sites are removed after the type inference algorithm has been performed, if the different branches of a dispatch site lead to the same code. </div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The advantage of this approach is that it greatly speeds up execution time and considerably decreases the amount of generated code. </div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The advantage of this approach is that it greatly speeds up execution time and considerably decreases the amount of generated code. </div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>'''Abstract:''' </div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Non-conforming inheritance (NC-inheritance) is a mechanism recently introduced in the new Eiffel definition. The NC-inheritance mechanism is similar to traditional inheritance but it disallows polymorphism. This simple mechanism appears to be useful in many situations because it allows the designer to capture more design decisions in the source code itself. Furthermore this mechanism helps compilers to statically remove more dynamic dispatch code. NC-inheritance incurs no type-system soundness problems even when arguments are redefined covariantly or when the exportation is restricted in the subclass. Out of the Eiffel world, the NC-inheritance mechanism can be useful to add a no-penalty and no-risk multiple-inheritance-like facility. For instance the Java language, initially designed for simple-inheritance, could be a possible candidate for an NC-inheritance extension. </div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Non-conforming inheritance (NC-inheritance) is a mechanism recently introduced in the new Eiffel definition. The NC-inheritance mechanism is similar to traditional inheritance but it disallows polymorphism. This simple mechanism appears to be useful in many situations because it allows the designer to capture more design decisions in the source code itself. Furthermore<ins style="font-weight: bold; text-decoration: none;">,</ins> this mechanism helps compilers to statically remove more dynamic dispatch code. NC-inheritance incurs no type-system soundness problems even when arguments are redefined covariantly or when the exportation is restricted in the subclass. Out of the Eiffel world, the NC-inheritance mechanism can be useful to add a no-penalty and no-risk multiple-inheritance-like facility. For instance<ins style="font-weight: bold; text-decoration: none;">,</ins> the Java language, initially designed for simple-inheritance, could be a possible candidate for an NC-inheritance extension. </div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[http://www.liberty-eiffel.org/papers/insert2005.pdf Download the entire article]</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[http://www.liberty-eiffel.org/papers/insert2005.pdf Download the entire article]</div></td>
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</table>Hzwakenberghttps://wiki.liberty-eiffel.org/index.php?title=Papers&diff=2336&oldid=prevHzwakenberg: /* Efficient Dynamic Dispatch without Virtual Function Tables. The SmallEiffel Compiler. */2016-06-03T07:52:55Z<p><span dir="auto"><span class="autocomment">Efficient Dynamic Dispatch without Virtual Function Tables. The SmallEiffel Compiler.</span></span></p>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>'''Abstract:''' </div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>SmallEiffel is an Eiffel compiler which uses a fast simple inference mechanism to remove most <del style="font-weight: bold; text-decoration: none;">last</del> binding calls, replacing them by static bindings. Starting from the system's entry point, it compiles only statically living code, which saves compiling and then removing dead code. As the whole system is analyzed at compile time, multiple inheritance and genericity do not cause any overhead. </div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>SmallEiffel is an Eiffel compiler which uses a fast simple inference mechanism to remove most <ins style="font-weight: bold; text-decoration: none;">late</ins> binding calls, replacing them by static bindings. Starting from the system's entry point, it compiles only statically living code, which saves compiling and then removing dead code. As the whole system is analyzed at compile time, multiple inheritance and genericity do not cause any overhead. </div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>SmallEiffel features a coding scheme which eliminates the need for virtual function tables. Dynamic dispatch is implemented without any array access but uses a simple static binary branch code. We show that this implementation makes it possible to use modern hardware very efficiently. It also allows to inline more calls even when dynamic dispatch is required. Some more dispatch sites are removed after the type inference algorithm has been performed, if the different branches of a dispatch site lead to the same code. </div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>SmallEiffel features a coding scheme which eliminates the need for virtual function tables. Dynamic dispatch is implemented without any array access but uses a simple static binary branch code. We show that this implementation makes it possible to use modern hardware very efficiently. It also allows to inline more calls even when dynamic dispatch is required. Some more dispatch sites are removed after the type inference algorithm has been performed, if the different branches of a dispatch site lead to the same code. </div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[http://www.liberty-eiffel.org/papers/oopsla97.pdf Download the entire article]</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[http://www.liberty-eiffel.org/papers/oopsla97.pdf Download the entire article]</div></td>
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</table>Hzwakenberghttps://wiki.liberty-eiffel.org/index.php?title=Papers&diff=2335&oldid=prevHzwakenberg at 07:49, 3 June 20162016-06-03T07:49:27Z<p></p>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>These papers were written for SmallEiffel and SmartEiffel, but they still give good insights <del style="font-weight: bold; text-decoration: none;">on</del> the workings of Liberty Eiffel.</div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>These<ins style="font-weight: bold; text-decoration: none;"> research</ins> papers were written for SmallEiffel and SmartEiffel, but they still give good insights <ins style="font-weight: bold; text-decoration: none;">into</ins> the workings of Liberty Eiffel.</div></td>
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<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Type Inference for Late Binding. The SmallEiffel Compiler ==</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Type Inference for Late Binding. The SmallEiffel Compiler ==</div></td>
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</table>Hzwakenberghttps://wiki.liberty-eiffel.org/index.php?title=Papers&diff=2334&oldid=prevHzwakenberg at 07:45, 3 June 20162016-06-03T07:45:52Z<p></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 08:45, 3 June 2016</td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category: Literature]]</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category: Literature]]</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">Those</del> papers were written for SmallEiffel and SmartEiffel, but they still give good insights on the workings of Liberty Eiffel.</div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">These</ins> papers were written for SmallEiffel and SmartEiffel, but they still give good insights on the workings of Liberty Eiffel.</div></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Type Inference for Late Binding. The SmallEiffel Compiler ==</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Type Inference for Late Binding. The SmallEiffel Compiler ==</div></td>
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</table>Hzwakenberghttps://wiki.liberty-eiffel.org/index.php?title=Papers&diff=2004&oldid=prevHzwakenberg: Put page into category2014-09-10T18:23:53Z<p>Put page into category</p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 19:23, 10 September 2014</td>
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<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[[Category: Literature]]</div></td>
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<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Those papers were written for SmallEiffel and SmartEiffel, but they still give good insights on the workings of Liberty Eiffel.</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Those papers were written for SmallEiffel and SmartEiffel, but they still give good insights on the workings of Liberty Eiffel.</div></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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</table>Hzwakenberghttps://wiki.liberty-eiffel.org/index.php?title=Papers&diff=1812&oldid=prevCadrian at 12:49, 22 November 20132013-11-22T12:49:11Z<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
<col class="diff-marker" />
<col class="diff-content" />
<col class="diff-marker" />
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 13:49, 22 November 2013</td>
</tr><tr>
<td colspan="2" class="diff-lineno">Line 11:</td>
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<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The SmallEiffel compiler uses a simple type inference mechanism to translate Eiffel source code to C code. The most important aspect in our technique is that many occurrences of late binding are replaced by static binding. Moreover, when dynamic dispatch cannot be removed, inlining is still possible. The advantage of this approach is that is speeds up execution time and decreases considerably the amount of generated code. SmallEiffel compiler source code itself is a large scale benchmark used to show the quality of our results. Obviously, this efficient technique can also be used for class-based languages without dynamic class creation: for example, it is possible for C++ or Java and not possible for SmallTalk. </div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The SmallEiffel compiler uses a simple type inference mechanism to translate Eiffel source code to C code. The most important aspect in our technique is that many occurrences of late binding are replaced by static binding. Moreover, when dynamic dispatch cannot be removed, inlining is still possible. The advantage of this approach is that is speeds up execution time and decreases considerably the amount of generated code. SmallEiffel compiler source code itself is a large scale benchmark used to show the quality of our results. Obviously, this efficient technique can also be used for class-based languages without dynamic class creation: for example, it is possible for C++ or Java and not possible for SmallTalk. </div></td>
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<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[http://www.liberty-eiffel.org/papers/jmlc97.pdf<del style="font-weight: bold; text-decoration: none;">|</del>Download the entire article]</div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[http://www.liberty-eiffel.org/papers/jmlc97.pdf<ins style="font-weight: bold; text-decoration: none;"> </ins>Download the entire article]</div></td>
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<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The advantage of this approach is that it greatly speeds up execution time and considerably decreases the amount of generated code. </div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The advantage of this approach is that it greatly speeds up execution time and considerably decreases the amount of generated code. </div></td>
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<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[http://www.liberty-eiffel.org/papers/oopsla97.pdf<del style="font-weight: bold; text-decoration: none;">|</del>Download the entire article]</div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[http://www.liberty-eiffel.org/papers/oopsla97.pdf<ins style="font-weight: bold; text-decoration: none;"> </ins>Download the entire article]</div></td>
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<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>We present the results obtained on programs featuring a variety of programming styles and compare our results to a well-know and high quality garbage collector. </div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>We present the results obtained on programs featuring a variety of programming styles and compare our results to a well-know and high quality garbage collector. </div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[http://www.liberty-eiffel.org/papers/ismm98.pdf<del style="font-weight: bold; text-decoration: none;">|</del>Download the entire article]</div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[http://www.liberty-eiffel.org/papers/ismm98.pdf<ins style="font-weight: bold; text-decoration: none;"> </ins>Download the entire article]</div></td>
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<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The design of the Eiffel language makes it possible to perform global optimizations on Eiffel programs. In this paper, we describe some of the techniques we used in SmallEiffel, The GNU Eiffel Compiler, to generate highly efficient executables for Eiffel programs. Most of these techniques --- related to global analysis or not --- may also be applied to other object-oriented languages. </div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The design of the Eiffel language makes it possible to perform global optimizations on Eiffel programs. In this paper, we describe some of the techniques we used in SmallEiffel, The GNU Eiffel Compiler, to generate highly efficient executables for Eiffel programs. Most of these techniques --- related to global analysis or not --- may also be applied to other object-oriented languages. </div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[http://www.liberty-eiffel.org/papers/tools-europe-99.pdf<del style="font-weight: bold; text-decoration: none;">|</del>Download the entire article]</div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[http://www.liberty-eiffel.org/papers/tools-europe-99.pdf<ins style="font-weight: bold; text-decoration: none;"> </ins>Download the entire article]</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>This paper discusses common iteration schemes and highlights the interest of using explicit iterators. The advantages of external iterators are compared to those of internalized iterators. The integration of an iterator class hierarchy to an existing library without modifying the latter is detailed. This integration brings an extra level of abstraction to the library, which thus becomes more flexible, more adapted to certain design patterns and hence can be used in a higher-level way. Such an integration is not only possible, but can even be done in an optimized way, taking into account the specific structure of the collection traversed. A slight extension of existing class libraries can also be implemented that does not cause any compatibility problem and does not break existing code, but allows even further abstraction and makes it easier for the developer to use high-level, optimized, external iterators. </div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>This paper discusses common iteration schemes and highlights the interest of using explicit iterators. The advantages of external iterators are compared to those of internalized iterators. The integration of an iterator class hierarchy to an existing library without modifying the latter is detailed. This integration brings an extra level of abstraction to the library, which thus becomes more flexible, more adapted to certain design patterns and hence can be used in a higher-level way. Such an integration is not only possible, but can even be done in an optimized way, taking into account the specific structure of the collection traversed. A slight extension of existing class libraries can also be implemented that does not cause any compatibility problem and does not break existing code, but allows even further abstraction and makes it easier for the developer to use high-level, optimized, external iterators. </div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[http://www.liberty-eiffel.org/papers/tools-pacific-1999.pdf<del style="font-weight: bold; text-decoration: none;">|</del>Download the entire article]</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[http://www.liberty-eiffel.org/papers/tools-pacific-1999.pdf<ins style="font-weight: bold; text-decoration: none;"> </ins>Download the entire article]</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Although they can be seen as normal objects, they convey specific issues, pertaining to standard conformance rules for generic types. To get rid of existing problems, this paper proposes an adaptation of conformance rules for agents that provides much more flexibility while retaining all the benefits of a strong static typing system.</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Although they can be seen as normal objects, they convey specific issues, pertaining to standard conformance rules for generic types. To get rid of existing problems, this paper proposes an adaptation of conformance rules for agents that provides much more flexibility while retaining all the benefits of a strong static typing system.</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[http://www.liberty-eiffel.org/papers/jot2004.pdf<del style="font-weight: bold; text-decoration: none;">|</del>Download the entire article]</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[http://www.liberty-eiffel.org/papers/jot2004.pdf<ins style="font-weight: bold; text-decoration: none;"> </ins>Download the entire article]</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[http://www.jot.fm/issues/issue_2004_04/article7<del style="font-weight: bold; text-decoration: none;">|</del>HTML version at the JOT web site]</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[http://www.jot.fm/issues/issue_2004_04/article7<ins style="font-weight: bold; text-decoration: none;"> </ins>HTML version at the JOT web site]</div></td>
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<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Non-Conforming Inheritance: the SmartEiffel Experiment of a High-Level Mechanism ==</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Non-Conforming Inheritance: the SmartEiffel Experiment of a High-Level Mechanism ==</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>'''Abstract:''' </div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>'''Abstract:''' </div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Non-conforming inheritance (NC-inheritance) is a mechanism recently introduced in the new Eiffel definition. The NC-inheritance mechanism is similar to traditional inheritance but it disallows polymorphism. This simple mechanism appears to be useful in many situations because it allows the designer to capture more design decisions in the source code itself. Furthermore this mechanism helps compilers to statically remove more dynamic dispatch code. NC-inheritance incurs no type-system soundness problems even when arguments are redefined covariantly or when the exportation is restricted in the subclass. Out of the Eiffel world, the NC-inheritance mechanism can be useful to add a no-penalty and no-risk multiple-inheritance-like facility. For instance the Java language, initially designed for simple-inheritance, could be a possible candidate for an NC-<del style="font-weight: bold; text-decoration: none;">inherit\-ance</del> extension. </div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Non-conforming inheritance (NC-inheritance) is a mechanism recently introduced in the new Eiffel definition. The NC-inheritance mechanism is similar to traditional inheritance but it disallows polymorphism. This simple mechanism appears to be useful in many situations because it allows the designer to capture more design decisions in the source code itself. Furthermore this mechanism helps compilers to statically remove more dynamic dispatch code. NC-inheritance incurs no type-system soundness problems even when arguments are redefined covariantly or when the exportation is restricted in the subclass. Out of the Eiffel world, the NC-inheritance mechanism can be useful to add a no-penalty and no-risk multiple-inheritance-like facility. For instance the Java language, initially designed for simple-inheritance, could be a possible candidate for an NC-<ins style="font-weight: bold; text-decoration: none;">inheritance</ins> extension. </div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[http://www.liberty-eiffel.org/papers/insert2005.pdf<del style="font-weight: bold; text-decoration: none;">|</del>Download the entire article]</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[http://www.liberty-eiffel.org/papers/insert2005.pdf<ins style="font-weight: bold; text-decoration: none;"> </ins>Download the entire article]</div></td>
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</table>Cadrianhttps://wiki.liberty-eiffel.org/index.php?title=Papers&diff=1811&oldid=prevCadrian at 12:47, 22 November 20132013-11-22T12:47:09Z<p></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The SmallEiffel compiler uses a simple type inference mechanism to translate Eiffel source code to C code. The most important aspect in our technique is that many occurrences of late binding are replaced by static binding. Moreover, when dynamic dispatch cannot be removed, inlining is still possible. The advantage of this approach is that is speeds up execution time and decreases considerably the amount of generated code. SmallEiffel compiler source code itself is a large scale benchmark used to show the quality of our results. Obviously, this efficient technique can also be used for class-based languages without dynamic class creation: for example, it is possible for C++ or Java and not possible for SmallTalk. </div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The SmallEiffel compiler uses a simple type inference mechanism to translate Eiffel source code to C code. The most important aspect in our technique is that many occurrences of late binding are replaced by static binding. Moreover, when dynamic dispatch cannot be removed, inlining is still possible. The advantage of this approach is that is speeds up execution time and decreases considerably the amount of generated code. SmallEiffel compiler source code itself is a large scale benchmark used to show the quality of our results. Obviously, this efficient technique can also be used for class-based languages without dynamic class creation: for example, it is possible for C++ or Java and not possible for SmallTalk. </div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[<ins style="font-weight: bold; text-decoration: none;">http</ins>:<ins style="font-weight: bold; text-decoration: none;">//www.liberty-eiffel.org/papers/</ins>jmlc97.pdf|Download the entire article]</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The advantage of this approach is that it greatly speeds up execution time and considerably decreases the amount of generated code. </div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The advantage of this approach is that it greatly speeds up execution time and considerably decreases the amount of generated code. </div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[<ins style="font-weight: bold; text-decoration: none;">http</ins>:<ins style="font-weight: bold; text-decoration: none;">//www.liberty-eiffel.org/papers/</ins>oopsla97.pdf|Download the entire article]</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>We present the results obtained on programs featuring a variety of programming styles and compare our results to a well-know and high quality garbage collector. </div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>We present the results obtained on programs featuring a variety of programming styles and compare our results to a well-know and high quality garbage collector. </div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[<del style="font-weight: bold; text-decoration: none;">[File</del>:ismm98.pdf|Download the entire article<del style="font-weight: bold; text-decoration: none;">]</del>]</div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[<ins style="font-weight: bold; text-decoration: none;">http</ins>:<ins style="font-weight: bold; text-decoration: none;">//www.liberty-eiffel.org/papers/</ins>ismm98.pdf|Download the entire article]</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The design of the Eiffel language makes it possible to perform global optimizations on Eiffel programs. In this paper, we describe some of the techniques we used in SmallEiffel, The GNU Eiffel Compiler, to generate highly efficient executables for Eiffel programs. Most of these techniques --- related to global analysis or not --- may also be applied to other object-oriented languages. </div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The design of the Eiffel language makes it possible to perform global optimizations on Eiffel programs. In this paper, we describe some of the techniques we used in SmallEiffel, The GNU Eiffel Compiler, to generate highly efficient executables for Eiffel programs. Most of these techniques --- related to global analysis or not --- may also be applied to other object-oriented languages. </div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[<del style="font-weight: bold; text-decoration: none;">[File</del>:tools-europe-99.pdf|Download the entire article<del style="font-weight: bold; text-decoration: none;">]</del>]</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[<ins style="font-weight: bold; text-decoration: none;">http</ins>:<ins style="font-weight: bold; text-decoration: none;">//www.liberty-eiffel.org/papers/</ins>tools-europe-99.pdf|Download the entire article]</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>This paper discusses common iteration schemes and highlights the interest of using explicit iterators. The advantages of external iterators are compared to those of internalized iterators. The integration of an iterator class hierarchy to an existing library without modifying the latter is detailed. This integration brings an extra level of abstraction to the library, which thus becomes more flexible, more adapted to certain design patterns and hence can be used in a higher-level way. Such an integration is not only possible, but can even be done in an optimized way, taking into account the specific structure of the collection traversed. A slight extension of existing class libraries can also be implemented that does not cause any compatibility problem and does not break existing code, but allows even further abstraction and makes it easier for the developer to use high-level, optimized, external iterators. </div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>This paper discusses common iteration schemes and highlights the interest of using explicit iterators. The advantages of external iterators are compared to those of internalized iterators. The integration of an iterator class hierarchy to an existing library without modifying the latter is detailed. This integration brings an extra level of abstraction to the library, which thus becomes more flexible, more adapted to certain design patterns and hence can be used in a higher-level way. Such an integration is not only possible, but can even be done in an optimized way, taking into account the specific structure of the collection traversed. A slight extension of existing class libraries can also be implemented that does not cause any compatibility problem and does not break existing code, but allows even further abstraction and makes it easier for the developer to use high-level, optimized, external iterators. </div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[<del style="font-weight: bold; text-decoration: none;">[File</del>:tools-pacific-1999.pdf|Download the entire article<del style="font-weight: bold; text-decoration: none;">]</del>]</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[<ins style="font-weight: bold; text-decoration: none;">http</ins>:<ins style="font-weight: bold; text-decoration: none;">//www.liberty-eiffel.org/papers/</ins>tools-pacific-1999.pdf|Download the entire article]</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Although they can be seen as normal objects, they convey specific issues, pertaining to standard conformance rules for generic types. To get rid of existing problems, this paper proposes an adaptation of conformance rules for agents that provides much more flexibility while retaining all the benefits of a strong static typing system.</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Although they can be seen as normal objects, they convey specific issues, pertaining to standard conformance rules for generic types. To get rid of existing problems, this paper proposes an adaptation of conformance rules for agents that provides much more flexibility while retaining all the benefits of a strong static typing system.</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[<ins style="font-weight: bold; text-decoration: none;">http</ins>:<ins style="font-weight: bold; text-decoration: none;">//www.liberty-eiffel.org/papers/</ins>jot2004.pdf|Download the entire article]</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[http://www.jot.fm/issues/issue_2004_04/article7|HTML version at the JOT web site]</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[http://www.jot.fm/issues/issue_2004_04/article7|HTML version at the JOT web site]</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Non-conforming inheritance (NC-inheritance) is a mechanism recently introduced in the new Eiffel definition. The NC-inheritance mechanism is similar to traditional inheritance but it disallows polymorphism. This simple mechanism appears to be useful in many situations because it allows the designer to capture more design decisions in the source code itself. Furthermore this mechanism helps compilers to statically remove more dynamic dispatch code. NC-inheritance incurs no type-system soundness problems even when arguments are redefined covariantly or when the exportation is restricted in the subclass. Out of the Eiffel world, the NC-inheritance mechanism can be useful to add a no-penalty and no-risk multiple-inheritance-like facility. For instance the Java language, initially designed for simple-inheritance, could be a possible candidate for an NC-inherit\-ance extension. </div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Non-conforming inheritance (NC-inheritance) is a mechanism recently introduced in the new Eiffel definition. The NC-inheritance mechanism is similar to traditional inheritance but it disallows polymorphism. This simple mechanism appears to be useful in many situations because it allows the designer to capture more design decisions in the source code itself. Furthermore this mechanism helps compilers to statically remove more dynamic dispatch code. NC-inheritance incurs no type-system soundness problems even when arguments are redefined covariantly or when the exportation is restricted in the subclass. Out of the Eiffel world, the NC-inheritance mechanism can be useful to add a no-penalty and no-risk multiple-inheritance-like facility. For instance the Java language, initially designed for simple-inheritance, could be a possible candidate for an NC-inherit\-ance extension. </div></td>
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</table>Cadrianhttps://wiki.liberty-eiffel.org/index.php?title=Papers&diff=1810&oldid=prevCadrian: /* Conformance of agents in the Eiffel language */2013-11-22T12:44:07Z<p><span dir="auto"><span class="autocomment">Conformance of agents in the Eiffel language</span></span></p>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Non-Conforming Inheritance: the SmartEiffel Experiment of a High-Level Mechanism ==</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Non-Conforming Inheritance: the SmartEiffel Experiment of a High-Level Mechanism ==</div></td>
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</table>Cadrianhttps://wiki.liberty-eiffel.org/index.php?title=Papers&diff=1809&oldid=prevCadrian at 12:41, 22 November 20132013-11-22T12:41:56Z<p></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 13:41, 22 November 2013</td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The SmallEiffel compiler uses a simple type inference mechanism to translate Eiffel source code to C code. The most important aspect in our technique is that many occurrences of late binding are replaced by static binding. Moreover, when dynamic dispatch cannot be removed, inlining is still possible. The advantage of this approach is that is speeds up execution time and decreases considerably the amount of generated code. SmallEiffel compiler source code itself is a large scale benchmark used to show the quality of our results. Obviously, this efficient technique can also be used for class-based languages without dynamic class creation: for example, it is possible for C++ or Java and not possible for SmallTalk. </div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The SmallEiffel compiler uses a simple type inference mechanism to translate Eiffel source code to C code. The most important aspect in our technique is that many occurrences of late binding are replaced by static binding. Moreover, when dynamic dispatch cannot be removed, inlining is still possible. The advantage of this approach is that is speeds up execution time and decreases considerably the amount of generated code. SmallEiffel compiler source code itself is a large scale benchmark used to show the quality of our results. Obviously, this efficient technique can also be used for class-based languages without dynamic class creation: for example, it is possible for C++ or Java and not possible for SmallTalk. </div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[[File:jmlc97.pdf<ins style="font-weight: bold; text-decoration: none;">|</ins>Download the entire article]]</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The advantage of this approach is that it greatly speeds up execution time and considerably decreases the amount of generated code. </div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The advantage of this approach is that it greatly speeds up execution time and considerably decreases the amount of generated code. </div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>[[File:oopsla97.pdf<del style="font-weight: bold; text-decoration: none;"> </del>Download the entire article]]</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[[File:oopsla97.pdf<ins style="font-weight: bold; text-decoration: none;">|</ins>Download the entire article]]</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>We present the results obtained on programs featuring a variety of programming styles and compare our results to a well-know and high quality garbage collector. </div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The design of the Eiffel language makes it possible to perform global optimizations on Eiffel programs. In this paper, we describe some of the techniques we used in SmallEiffel, The GNU Eiffel Compiler, to generate highly efficient executables for Eiffel programs. Most of these techniques --- related to global analysis or not --- may also be applied to other object-oriented languages. </div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The design of the Eiffel language makes it possible to perform global optimizations on Eiffel programs. In this paper, we describe some of the techniques we used in SmallEiffel, The GNU Eiffel Compiler, to generate highly efficient executables for Eiffel programs. Most of these techniques --- related to global analysis or not --- may also be applied to other object-oriented languages. </div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>[[File:tools-europe-99.pdf<ins style="font-weight: bold; text-decoration: none;">|</ins>Download the entire article]]</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>This paper discusses common iteration schemes and highlights the interest of using explicit iterators. The advantages of external iterators are compared to those of internalized iterators. The integration of an iterator class hierarchy to an existing library without modifying the latter is detailed. This integration brings an extra level of abstraction to the library, which thus becomes more flexible, more adapted to certain design patterns and hence can be used in a higher-level way. Such an integration is not only possible, but can even be done in an optimized way, taking into account the specific structure of the collection traversed. A slight extension of existing class libraries can also be implemented that does not cause any compatibility problem and does not break existing code, but allows even further abstraction and makes it easier for the developer to use high-level, optimized, external iterators. </div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>This paper discusses common iteration schemes and highlights the interest of using explicit iterators. The advantages of external iterators are compared to those of internalized iterators. The integration of an iterator class hierarchy to an existing library without modifying the latter is detailed. This integration brings an extra level of abstraction to the library, which thus becomes more flexible, more adapted to certain design patterns and hence can be used in a higher-level way. Such an integration is not only possible, but can even be done in an optimized way, taking into account the specific structure of the collection traversed. A slight extension of existing class libraries can also be implemented that does not cause any compatibility problem and does not break existing code, but allows even further abstraction and makes it easier for the developer to use high-level, optimized, external iterators. </div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Although they can be seen as normal objects, they convey specific issues, pertaining to standard conformance rules for generic types. To get rid of existing problems, this paper proposes an adaptation of conformance rules for agents that provides much more flexibility while retaining all the benefits of a strong static typing system.</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Although they can be seen as normal objects, they convey specific issues, pertaining to standard conformance rules for generic types. To get rid of existing problems, this paper proposes an adaptation of conformance rules for agents that provides much more flexibility while retaining all the benefits of a strong static typing system.</div></td>
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</table>Cadrianhttps://wiki.liberty-eiffel.org/index.php?title=Papers&diff=1808&oldid=prevCadrian: Created page with "Those papers were written for SmallEiffel and SmartEiffel, but they still give good insights on the workings of Liberty Eiffel. == Type Inference for Late Binding. The SmallE..."2013-11-22T12:40:33Z<p>Created page with "Those papers were written for SmallEiffel and SmartEiffel, but they still give good insights on the workings of Liberty Eiffel. == Type Inference for Late Binding. The SmallE..."</p>
<p><b>New page</b></p><div>Those papers were written for SmallEiffel and SmartEiffel, but they still give good insights on the workings of Liberty Eiffel.<br />
<br />
== Type Inference for Late Binding. The SmallEiffel Compiler ==<br />
Suzanne COLLIN, Dominique COLNET and Olivier ZENDRA <br />
<br />
''Joint Modular Languages Conference 1997 (JMLC'97),<br />
Volume 1204 of Lecture Notes in Computer Sciences, pages 67-81.''<br />
<br />
'''Abstract:''' <br />
<br />
The SmallEiffel compiler uses a simple type inference mechanism to translate Eiffel source code to C code. The most important aspect in our technique is that many occurrences of late binding are replaced by static binding. Moreover, when dynamic dispatch cannot be removed, inlining is still possible. The advantage of this approach is that is speeds up execution time and decreases considerably the amount of generated code. SmallEiffel compiler source code itself is a large scale benchmark used to show the quality of our results. Obviously, this efficient technique can also be used for class-based languages without dynamic class creation: for example, it is possible for C++ or Java and not possible for SmallTalk. <br />
<br />
[[File:jmlc97.pdf Download the entire article]]<br />
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<br />
== Efficient Dynamic Dispatch without Virtual Function Tables. The SmallEiffel Compiler. ==<br />
Olivier ZENDRA, Dominique COLNET, Suzanne COLLIN. <br />
<br />
''12th Annual ACM SIGPLAN Conference on Object-Oriented Programming, Systems, Languages, and Applications (OOPSLA'97),<br />
Volume 32, Issue 10 --- Atlanta, GA, USA, October 1997, pages 125-141.''<br />
<br />
'''Abstract:''' <br />
<br />
SmallEiffel is an Eiffel compiler which uses a fast simple inference mechanism to remove most last binding calls, replacing them by static bindings. Starting from the system's entry point, it compiles only statically living code, which saves compiling and then removing dead code. As the whole system is analyzed at compile time, multiple inheritance and genericity do not cause any overhead. <br />
<br />
SmallEiffel features a coding scheme which eliminates the need for virtual function tables. Dynamic dispatch is implemented without any array access but uses a simple static binary branch code. We show that this implementation makes it possible to use modern hardware very efficiently. It also allows to inline more calls even when dynamic dispatch is required. Some more dispatch sites are removed after the type inference algorithm has been performed, if the different branches of a dispatch site lead to the same code. <br />
<br />
The advantage of this approach is that it greatly speeds up execution time and considerably decreases the amount of generated code. <br />
<br />
[[File:oopsla97.pdf Download the entire article]]<br />
<br />
<br />
== Compiler Support to Customize the Mark and Sweep Algorithm. ==<br />
Dominique COLNET, Philippe COUCAUD and Olivier ZENDRA. <br />
<br />
''ACM SIGPLAN International Symposium on Memory Management (ISMM'98),<br />
Vancouver, BC, Canada, October 17-19, 1998, pages 154-165.''<br />
<br />
'''Abstract:''' <br />
<br />
Mark and sweep garbage collectors (GC) are classical but still very efficient automatic memory management systems. Although challenged by other kinds of systems, such as copying collectors, mark and sweep collectors remain among the best in terms of performance. <br />
<br />
This paper describes our implementation of an efficient mark and sweep garbage collector tailored to each program. Compiler support provides the type information required to statically and automatically generate this customized garbage collector. The segregation of objects by type allows the production of a more efficient GC code. This technique, implemented in SmallEiffel, our compiler for the object-oriented language Eiffel, is applicable to other languages and other garbage collection algorithms, be they distributed or not. <br />
<br />
We present the results obtained on programs featuring a variety of programming styles and compare our results to a well-know and high quality garbage collector. <br />
<br />
[[File:ismm98.pdf Download the entire article]]<br />
<br />
<br />
== Optimizations of Eiffel programs: SmallEiffel, The GNU Eiffel Compiler. ==<br />
Dominique COLNET and Olivier ZENDRA.<br />
<br />
''29th conference on Technology of Object-Oriented Languages and Systems (TOOLS Europe'99), IEEE Computer Society<br />
Nancy, France, June 7-10, 1999, pages 341--350.''<br />
<br />
'''Abstract:''' <br />
<br />
The design of the Eiffel language makes it possible to perform global optimizations on Eiffel programs. In this paper, we describe some of the techniques we used in SmallEiffel, The GNU Eiffel Compiler, to generate highly efficient executables for Eiffel programs. Most of these techniques --- related to global analysis or not --- may also be applied to other object-oriented languages. <br />
<br />
[[File:tools-europe-99.pdf Download the entire article]]<br />
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<br />
== Adding external iterators to an existing Eiffel class library. ==<br />
Olivier ZENDRA and Dominique COLNET.<br />
<br />
''32nd conference on Technology of Object-Oriented Languages and Systems (TOOLS Pacific'99), IEEE Computer Society<br />
Melbourne, Australia, 22-25 November 1999, pages xx--yy.''<br />
<br />
'''Abstract:''' <br />
<br />
This paper discusses common iteration schemes and highlights the interest of using explicit iterators. The advantages of external iterators are compared to those of internalized iterators. The integration of an iterator class hierarchy to an existing library without modifying the latter is detailed. This integration brings an extra level of abstraction to the library, which thus becomes more flexible, more adapted to certain design patterns and hence can be used in a higher-level way. Such an integration is not only possible, but can even be done in an optimized way, taking into account the specific structure of the collection traversed. A slight extension of existing class libraries can also be implemented that does not cause any compatibility problem and does not break existing code, but allows even further abstraction and makes it easier for the developer to use high-level, optimized, external iterators. <br />
<br />
[[File:tools-pacific-1999.pdf Download the entire article]]<br />
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<br />
== Conformance of agents in the Eiffel language ==<br />
Philippe Ribet, Cyril Adrian, Olivier Zendra, and Dominique Colnet<br />
<br />
''Conference on Technology of Object-Oriented Languages and Systems (TOOLS USA 2003)<br />
Published in Journal Of Technology (JOT), April 2004.''<br />
<br />
'''Abstract:''' <br />
<br />
In Eiffel, the notion of agent makes it possible to describe and manipulate computation parts (i.e. operations) like ordinary data. Operations may be partially described, may be passed as ordinary data and may have their execution delayed. Agents are very convenient for many purposes, such as going through data structures and implementing call-backs in graphical libraries.<br />
<br />
Although they can be seen as normal objects, they convey specific issues, pertaining to standard conformance rules for generic types. To get rid of existing problems, this paper proposes an adaptation of conformance rules for agents that provides much more flexibility while retaining all the benefits of a strong static typing system.<br />
<br />
[[File:jot2004.pdf Download the entire article]]<br />
[[http://www.jot.fm/issues/issue_2004_04/article7 HTML version at JOT web site]]<br />
<br />
<br />
== Non-Conforming Inheritance: the SmartEiffel Experiment of a High-Level Mechanism ==<br />
Frederic Merizen, Dominique Colnet, Philippe Ribet and Cyril Adrian<br />
<br />
''Rejected submission for OOPSLA 2005.''<br />
<br />
'''Abstract:''' <br />
<br />
Non-conforming inheritance (NC-inheritance) is a mechanism recently introduced in the new Eiffel definition. The NC-inheritance mechanism is similar to traditional inheritance but it disallows polymorphism. This simple mechanism appears to be useful in many situations because it allows the designer to capture more design decisions in the source code itself. Furthermore this mechanism helps compilers to statically remove more dynamic dispatch code. NC-inheritance incurs no type-system soundness problems even when arguments are redefined covariantly or when the exportation is restricted in the subclass. Out of the Eiffel world, the NC-inheritance mechanism can be useful to add a no-penalty and no-risk multiple-inheritance-like facility. For instance the Java language, initially designed for simple-inheritance, could be a possible candidate for an NC-inherit\-ance extension. <br />
<br />
[[File:insert2005.pdf Download the entire article]]</div>Cadrian