[antlr-interest] Parse tree error messages.

[Trey Spiva]

When parsing a file the recognizers report pretty good error messages.
However, when using parse trees the error messages are very cryptic.  Is
here a way to have the tree parser at least report the token AST type
that it is expecting and the AST type that if found.

The error message that the tree parser is reporting is:

<AST> : unexpected AST node: <ASTNULL>

 

Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/