Where are tree grammars in ANTLR4?

Question

I'm going to migrate from ANTLR3 to ANTLR4, I appreciated auto-left recursion, but .. I did not find tree-based grammars, → instructions are supported.

Can someone explain what is the reason for removing this function and what will I do?

If I understand correctly, I need to write a java node listener. Is there a guideline for going from 3 to 4, like this ?

Answer 1

Have you seen these links?

https://theantlrguy.atlassian.net/wiki/pages/viewpage.action?pageId=1900596

This topic is also being discussed. Google search found on the first page, top 3

https://groups.google.com/forum/#!topic/antlr-discussion/W9zGVdd6BKQ