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eclipse-SDK-20020612 sun jdk 1.3.1_01 windows 2000 I added some white space noise to IType.java (changed format to use spaces rather than tabs). When I then saved the file (first time only) a large rebuild was triggered. How expensive is it to check the generated byte code to determine if the before/after build is the same? If it is not too expensive this may save time when base classes are changed for formatting/commenting type purposes, an entire rebuild is not required.
I thought that we already checked for structure change. Kent, could you have a look?
If it was only the first time and could not be reproduced then I suspect your workspace was not built & a full build kicked in... Do you remember seeing messages like: 'Scrubbing Output Folder'? Do you remember how you built the workspace? Was Auto-build enabled? Can you reproduce this?
A full build of my workspace was performed prior to this activity. With a clean workspace import all eclipse plugins. Automatic Build is active (all defaults are active I never bothered to change any values). To reproduce this scenario, 1/ load all eclipse plugins as described above 2/ window > preferences > java > editor -- check insert space for tabs 3/ window > preferences > java > code formatter > style -- clear indentation is represented by tab 4/ in java perspective find IType.java 5/ format IType.java 6/ save IType.java When I referred to first time only, what I meant was subsequent changes to the file IType.java did not behave the same way. For example if I change the settings in 2/ and 3/ back to their original values and save I see less activity being performed. I do not recall seeing the 'Scrubbing Output Folder' message. A full build was not performed as I have all plugins installed, the full build takes much longer than the activity I observed. Basically I see lots of messages in the bottom status bar, some which don't make sense (to me) if only whitespace was changed
Could not reproduce... the build took 1-2 seconds. Did not see anything out of the ordinary printed on the status line.
Closing... Andrew has saved & restarted his workspace so he saw all the 'Reading build state' messages.
