Build a Tree Language

Tree Notation Sandbox | JTree Tests | Perf Tests | Type Perf Tests | GitHub | |

This is a simple web IDE for designing and building Tree Languages. To build a Tree Language, you write code in a "grammar language" in the textarea on the left. You can then write code in your new language in the textarea on the right. You instantly get syntax highlighting, autocomplete, type/cell checking, suggested corrections, and more.

Click "New" to create a New Language, or explore existing languages. In dev tools, you can access the parsed trees below as "app.grammarProgram" and program at "app.program".

Grammar for your Tree Language
Source Code in your Language
Grammar Errors:

Language Errors:

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