https://www.ilscipio.com/en/tags/developer-tools/ Recent content in Developer-Tools on Ilscipio - Enterprise Commerce Experts Hugo en-US Tue, 01 Sep 2026 00:00:00 +0000 https://www.ilscipio.com/en/blog/add-custom-language-jetbrains/ Tue, 01 Sep 2026 00:00:00 +0000 https://www.ilscipio.com/en/blog/add-custom-language-jetbrains/ <p>I needed Freemarker support in IntelliJ and it did not exist. The built-in highlighting was wrong half the time, there was no completion, and navigating between templates was guessing. So I wrote a plugin. That was plugin number one. Twenty-one more followed.</p> <p>To add a custom language to a JetBrains IDE you need four things: a lexer, a parser, a PSI tree, and at least one useful feature on top. Everything else is optional but makes the plugin worth paying for.</p> https://www.ilscipio.com/en/blog/jetbrains-plugins-lessons/ Tue, 25 Aug 2026 00:00:00 +0000 https://www.ilscipio.com/en/blog/jetbrains-plugins-lessons/ <p>It started with a Freemarker plugin. We were using Freemarker templates in ScipioERP and the IDE support was limited - no completion, no navigation, no syntax highlighting worth mentioning. I thought, how hard can it be.</p> <p>Turns out: not that hard, actually. The JetBrains platform is powerful. The documentation just does not tell you that.</p> <h2 id="one-plugin-became-a-pattern">One plugin became a pattern</h2><p>The Freemarker plugin worked. People downloaded it. I got emails. And I noticed something: the core infrastructure I had built - the PSI tree builder, the completion engine, the settings framework - was reusable. Adding support for a new language meant implementing the grammar and a few custom inspections. Everything else was shared.</p>