Extract method revival

Project Lead: Benjamin Muskalla (IRC: benny`work)

Mentor: Markus Keller

This project is part of the Google Summer of Code 2009

Abstract

JDT already provides several very good refactorings like Extract method. Despite the fact they are behave very good there are still some unresolved bugs and open enhancement requests. The project will take the "Extract method" refactoring to the next step by resolving all (possible) bugs and trying to enhance the current functionality. As it is one of the most used refactorings in day-to-day development it really deserves some work to get all details and edge cases fixed.

Primary goals

Legend

Needs some investigation/research

Work in progress

Bug fixed (JDT 3.6 I-Builds)

bug 79994: [extract method] add parameter if extracted out of inner class

bug 183189: [extract method] Extract Method's occurrence finder can't handle constants in signature

bug 58648: [extract method] disregard 'this.' when finding duplicates (was: find simple aliasing)

bug 179281: [extract method] from constructor doesn't handle final members of class

bug 143616: [extract method] problem with shadowed subclass methods

bug 64245: [extract method] creates un-needed code

bug 48056: [extract method] Extract method and continue

bug 264606: [extract method] extracting return value results in compile error

bug 273537: [extract method] Extract method fails when there is exception-throwing in the area

bug 50607: [extract method] Name ambigous return value in error message

bug 231568: [extract method] Ambiguous return value, but only one local variable is used after block

bug 152004: [extract method] should declare method static if extracted from anonymous in static method

bug 160853: [extract method] Does not replace similar code in parent class of anonymous class

bug 213519: [extract method] Missing return value, while extractiong code out of a loop

bug 97413: [extract method] missing return type when code can throw exception

bug 101233: [extract method] remember selected access modifier

Timeline

Here is a complete list of the milestones and release candidates planned for this plugin.

Milestone	Date	Planned items
M1	April 30	TBD
M2	May 26	TBD
M3	June 21	TBD
M4	July 3	TBD
M5	July 17	TBD
RC1	August 2	TBD
Pencils down	August 10	-

Community Involvement

Getting the source

As all the changes made to the Extract method refactoring are done by patching the existing JDT bundles there is no seperate source repository. Either you wait that JDT includes the patches in one of the next I builds or you can checkout the JDT bundles yourself and apply the patches. All changes will be contributed trough the corresponding bugs in bugzilla (see above).

Open issues

To see all the open issues and feature requests of this project, take a look at this query.

New ideas

Do you have a great idea for the refactoring? Just open a new feature request.