[antlr-interest] adding enum token types output for java target

[Terence Parr]

On May 26, 2008, at 10:59 AM, Johannes Luber wrote:

>> Howdy folks,
>>
>> The C target gets a .h file as output to define tokens etc...  Brian
>> Goetz, Sun smarty pants, asked me about generating an enum from ANTLR
>> to make it easier for IDEs and other tools to use reflection to get
>> token types and other goodies.  It took me 2 minutes and a few
>> template lines to make this happen (i.e., no code generator changes).
>
> You mean an enum for UP, DOWN, EOF, etc.? Why isn't there one  
> already used in Java instead the int array? Why is the current  
> solution not sufficient?

It's for all of the generated tokens not be predefined ones, although  
I should add those as well.  Tools that use antlr-generated  
recognizers need to know what the list of tokens is in token types so  
that it can do highlighting, error recovery, auto completion, all  
sorts of things.

Ter