[antlr-interest] Antlr-Eclipse Problems
Robert Colquhoun
rjc at trump.net.au
Thu Apr 17 05:27:53 PDT 2003
Hello,
I have just tried using antlr plugin for eclipse
(http://sourceforge.net/projects/antlreclipse/) with the recently released
eclipse 2.1 (http://www.eclipse.org/).
By default the eclipse compiler is a bit stricter than the default java
compiler. The generated antlr java code now seems to produce a large
number of warnings mainly "unused import" around 180 errors for my project,
but also "unused variable" if you have that warning enabled, around 100
errors for the project.
An easy fix is just to just disable the particular warnings for the
project. But i was wondering if the antlr code generation could be made a
bit smarter ie *TokenTypes.java files are just a set of integer constants
they cant possibly need any of the imports provided.
Anyway i started looking at the generated code and it occurred to me really
you shouldn't be pulling any of the antlr namespace via imports into the
code because it can interfere with the user code in the actions.
ie antlr imports its own BitSet class, if the user wants to use
java.util.BitSet the names will clash.
I can provide a patch so that no antlr classes are imported by simply using
fully qualified names in the generated code. This might make the generated
code marginally longer slightly harder to read but it will fix the eclipse
problem and remove the chance of names clashing.
Is this worthwhile patch?
- Robert
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