This page is part of multi-step Custom Language Support Tutorial. All previous steps must be executed in sequence for the code to work.
Download and Install IntelliJ IDEADownload and install either IntelliJ IDEA Ultimate or IntelliJ IDEA Community Edition from here.
While not required, having the full sources of the platform and all bundled plugins available for browsing allows finding related implementations.
Download the IntelliJ IDEA Community Edition source files as described in the IntelliJ IDEA Community Edition README file.
Install Required PluginsMake sure that the Plugin DevKit and Gradle plugins are enabled.
Plugin DevKit plugin must be installed from JetBrains Marketplace (Plugin Homepage) as it is not bundled since version 2023.3.
Install and enable Grammar-Kit and PsiViewer (optionally) plugins.
Create a ProjectCreate an empty IntelliJ Platform Plugin project or start using IntelliJ Platform Plugin Template when creating a plugin hosted on GitHub.
19 March 2025
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