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<p>Any such change would have to be in accord with JLS and the TCK
...</p>
<p>-- Jon<br>
</p>
<div class="moz-cite-prefix">On 6/18/24 7:26 AM, Mickael Istria
wrote:<br>
</div>
<blockquote type="cite" cite="mid:CAFr6BZSk7a22FWrZy6QakmJ0OA5-sOKaga6DYpEJRqSZL4rnSg@mail.gmail.com">
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<div>Hi all,</div>
<div><br>
</div>
<div>Our team, made of various Eclipse JDT contributors, is
currently looking at allowing Eclipse JDT to directly use
Javac instead of ECJ for Java code parsing and resolution and
code generation. The goal is to keep the higher levels of
Eclipse JDT and its ecosystem/plugins working, and allow to
plug a Javac-based backend under the hood as an alternative.<br>
</div>
<div>We've already made significant progress on this topic, and
despite various remaining glitches, a proof of concept is
already kind of usable, with all typical IDE features (code
analysis, error reporting, selection, completion, indexing...)
provided by javac backend. We are then confident that this is
a viable approach on the mid to long term.</div>
<div>Ongoing work is happening at <a href="https://github.com/eclipse-jdtls/eclipse-jdt-core-incubator" moz-do-not-send="true" class="moz-txt-link-freetext">https://github.com/eclipse-jdtls/eclipse-jdt-core-incubator</a></div>
<div><br>
</div>
<div>While working on it, we've identified some interesting
features of ECJ that are missing in Javac and that would be in
our opinion extremely profitable to IDE integration, but also
could be profitable to other integrations as they can shorten
the feedback look tremendously in some cases.<br>
</div>
<div>The main feature we're missing from ECJ would be something
equivalent to its `-proceedOnError` flag. Basically, it makes
that the compiler, when it faces a compilation error, replaces
the DOM/AST and the generated code with `throw new
CompilationError(compilationErrorMessage)`. This is extremely
convenient when debugging as it allows to hotswap some
not-yet-complete-but-already-interesting-to-debug code into a
running application.</div>
<div>Do you think Javac could some day provide such a feature
too? This is not (yet?) a request for enhancement, at this
stage, we're just evaluating our hopes of getting our
integration supporting this important enough case in the
future. If there is no technical reason why not, then we may
investigate contributing it (of course, if someone wants to
implement it in the meantime, don't hesitate in coding it
before us ;)</div>
<div><br>
</div>
<div>Cheers,<br>
</div>
<div><span class="gmail_signature_prefix">-- </span><br>
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<div>Mickael Istria<br>
</div>
<a href="https://www.eclipse.org/eclipseide" target="_blank" moz-do-not-send="true">Eclipse
IDE</a> developer, for <a href="https://developers.redhat.com/" target="_blank" moz-do-not-send="true">Red Hat</a></div>
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