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EGL only write file on changes [message #929080]

Mon, 01 October 2012 07:48

Maarten Bezemer

Messages: 117
Registered: February 2012

Senior Member

Hi,

Is it (easily) possible to let EGL only write the file if it actually changed? (Assumming it as already generated earlier)

For larger projects my C++ code generation results in lots and lots of source files. After a minor change in the model, code generation rewrites all files.
Resulting in make recompiling all files, eventhough most of them are unchanged...

Thanks,
Maarten

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Re: EGL only write file on changes [message #929365 is a reply to message #929080]

Mon, 01 October 2012 11:53

Dimitris Kolovos

Messages: 2163
Registered: July 2009
Location: York, UK

Senior Member

Hi Maarten,

That shouldn't be too difficult to fix. Could you perhaps file an enhancement request for this?

https://bugs.eclipse.org/bugs/enter_bug.cgi?product=EMFT.Epsilon

Of course, any contributions in this direction would clearly help speed things up Smile

Cheers,
Dimitris

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Re: EGL only write file on changes [message #929389 is a reply to message #929365]

Mon, 01 October 2012 12:16

Maarten Bezemer

Messages: 117
Registered: February 2012

Senior Member

Dimitris Kolovos wrote on Mon, 01 October 2012 13:53

Of course, any contributions in this direction would clearly help speed things up

If you could point me to to the class which is responsible for loading/writing generated files I could give it a try Smile

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Re: EGL only write file on changes [message #929398 is a reply to message #929389]

Mon, 01 October 2012 12:28

Dimitris Kolovos

Messages: 2163
Registered: July 2009
Location: York, UK

Senior Member

Thanks! The doGenerate/write methods of /org.eclipse.epsilon.egl.engine/src/org/eclipse/epsilon/egl/EglFileGeneratingTemplate.java should be a good starting point for this. So that the engine doesn't have to remember what it generated and what not I'd be inclined to read the contents of the existing file, compare it with the output and only overwrite if different.

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Re: EGL only write file on changes [message #929587 is a reply to message #929398]

Mon, 01 October 2012 15:33

Maarten Bezemer

Messages: 117
Registered: February 2012

Senior Member

Patch submitted: Bug #390836

It was a pain in the *** to test it, as I use the official released version (so my users are able to easily obtain Epsilon). This version is very outdated, especially package name changes took quite some time to solve.
Is there any plan to provide a new official release? (lots of cool feature have been added lately, so I cannot wait to use that version in my application!)

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