On Wednesday, June 18, 2008 at 4:32:01 PM UTC-7, kyle smith wrote:
>
> Is it possible to automatically convert java code to clojure? If so,
> would someone like to volunteer to write it?
I frequently want to quickly translate code snippets from Java to Clojure
to test out an API.
For example Twitter4J has some code snippets in Java that would be more
useful for me in Clojure.
For this I use a Perl one-liner to translate the kind of simple code that
occurs in API snippets.
Here is the Perl translator with a simple test case.
TEST=$(cat <<"END"
String key1 = "";
String key2= "";
TwitterFactory factory =new TwitterFactory(key1,key2);
Twitter twitter = factory.getInstance();
User user = twitter.verifyCredentials();
List<Status> statuses = twitter.getHomeTimeline();
screenName = user.getScreenName();
text = status.getText();
END)
echo "$TEST" |
perl -ne '
s/=/ = /g; # Put spaces around =
s/\s+/ /g; # Remove multiple spaces
s/^\s+|\s+$//g; # Trim
s/,/ /g; # Remove commas
# Handle var = new Obj();
# Handle var = obj.method();
# Handle var = value;
s/.*?(\S+) = new (\S+)\(([^\)]*)\);/(def $1 (new $2 $3))/;
s/.*?(\S+) = (\S+)\.(\S+)\(([^\)]*)\);/(def $1 (.$3 $2 $4))/;
s/.*?(\S+) = (.*);/(def $1 $2)/;
s/\s+\)/)/g; # Cleanup
print qq{$_\n};'
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