This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.

on_error

        # Racc::Parser.on_error

(from ruby core)
### Implementation from Parser
---
    on_error(t, val, vstack)

---

This method is called when a parse error is found.

ERROR_TOKEN_ID is an internal ID of token which caused error. You can
get string representation of this ID by calling #token_to_str.

ERROR_VALUE is a value of error token.

value_stack is a stack of symbol values. DO NOT MODIFY this object.

This method raises ParseError by default.

If this method returns, parsers enter "error recovering mode".



      

This is MURDOC! A Ruby documentation browser inspired by Smalltalk-80. It allows you to learn about Ruby by browsing through its class hierarchies, and see any of its methods.