[antlr-interest] simple novice grammar question

[Monty Zukowski]

On May 25, 2004, at 12:45 PM, Greg Gimler wrote:

>> 1) Generally there is no need to make the LPAREN the head of the tree
>> in the filter (or factor) rule.  The tree implicitly has the correct
>> order of operations in it and doesn't need grouping operators.
>
> Got rid of that.  Seems OK.

If you are doing source to source translation then eliminating the 
LPAREN means that you will loose all extraneous parenthesis used for 
ease of reading the program.  You will also need to implement an 
algorithm to insert parenthesis into the output source where they are 
implied by the tree structure.

Monty Zukowski

ANTLR & Java Consultant -- http://www.codetransform.com
ANSI C/GCC transformation toolkit -- 
http://www.codetransform.com/gcc.html
Embrace the Decay -- http://www.codetransform.com/EmbraceDecay.html



 
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