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Extending existing files with Xtend [message #1689355]

Mon, 23 March 2015 11:41

Ferdinand von den Eichen

Messages: 9
Registered: March 2015

Junior Member

Hi everyone,

I basically want to modify classes of an already existing project. I would have to insert a number of lines of code at certain points in the existing files.

1) What's a good approach, design-wise? Are there any reference implementations I could look at? Currently I'm thinking to have markers in the files that indicate where I can safely insert code.

2) In terms of implementation: The IFileSystemAccess of the overwritten doGenerate seems basic at best (only create & delete file). What is a good/more powerful way of accessing and modifying files in Xtend?

Greetings & thanks for bearing with me! Smile

Ferdinand

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Re: Extending existing files with Xtend [message #1690079 is a reply to message #1689355]

Wed, 25 March 2015 06:51

Sven Efftinge

Messages: 1823
Registered: July 2009

Senior Member

There are three extensions, available since version 2.4, with additional capabilities which you can cast to:
- IFileSystemAccessExtension
- IFileSystemAccessExtension2
- IFileSystemAccessExtension3

Sorry, for the inconvenient API in this place.
hth,
Sven

[Updated on: Wed, 25 March 2015 06:52]

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Re: Extending existing files with Xtend [message #1690145 is a reply to message #1690079]

Wed, 25 March 2015 13:29

Ferdinand von den Eichen

Messages: 9
Registered: March 2015

Junior Member

Thanks for the info! I think these three extension have pretty much solved my issues. I'm now running a setup where i tag lines of codes in generated files with custom markers. I can then edit/insert or remove lines at the marker locations by using the extensions you mentioned! Smile

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