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How to generate code from Xbase expressions [message #1745268]

Fri, 07 October 2016 03:07

Eclipse User

I am experimenting with Xbase my first time. I want to generate code from my Xbase expressions I entered into my DSL but if I parse the Xbase expression object tree I find some bogus JvmVoidImplCustom objects.
I guess that there must be some linking behind the scenes.
How can I get the identifiers I entered to my expressions ?
What do I need to do ?
Is there some standard mechanism to privide Xbase with a set of valid identifieres ?

Re: How to generate code from Xbase expressions [message #1745283 is a reply to message #1745268]

Fri, 07 October 2016 05:34

Eclipse User

i am not sure: JvmModelGenerator + XbaseCompiler asume to find a model that ran through the inferrer and XbaseTypeComputer having seen the complete expression tree.
so can you elabtorate what you are actually doing.

Re: How to generate code from Xbase expressions [message #1745291 is a reply to message #1745283]

Fri, 07 October 2016 06:49

Eclipse User

I am using XExpressions in my DSL but I am not using the JvmInferrer and I don't know the XbaseCompiler and XbaseTypeComputer.
Can I use the later ones outside the JvmInferrer ?
I want to generate Xtend instead of Java and I have my own Generator. I want to use the Xbase syntax to form java/xtend-like expressions and transform them into Xtend code in the end.

Re: How to generate code from Xbase expressions [message #1745304 is a reply to message #1745291]

Fri, 07 October 2016 07:48

Eclipse User

generating xtend wont work anyway since the xtext builder wont pick up files generated by xtext. and yes you need a jvmmodelinferrer and types computer run to be able to generate from the expressions using the exising generator.

Re: How to generate code from Xbase expressions [message #1745354 is a reply to message #1745304]

Fri, 07 October 2016 16:15

Eclipse User

How does the TypesComputer work ? Do you have some code examples or a pointer ?

Re: How to generate code from Xbase expressions [message #1745357 is a reply to message #1745354]

Sat, 08 October 2016 01:30

Eclipse User

From an API or from a impl point of view?

Re: How to generate code from Xbase expressions [message #1745358 is a reply to message #1745357]

Sat, 08 October 2016 01:35

Eclipse User

I just reccommend you to have a look at the domain model example and see how

Inferrer (provides jvmmodelassociations and logical containers for expressions - e.g. To which field initializers and methods bodies which expression should be mapped

The type computer

And the xbase compiler

Play together and how to components are called

By do some debugging

Re: How to generate code from Xbase expressions [message #1745363 is a reply to message #1745354]

Sat, 08 October 2016 06:23

Eclipse User

Olaf Bigalk wrote on Fri, 07 October 2016 20:15

How does the TypesComputer work ? Do you have some code examples or a pointer ?

Besides having a look at the domain model example, Xbase and a few advanced concepts related to Xbase (like the type computer and compiler customization) are covered to some extent in the second edition of my Xtext book, https://www.packtpub.com/application-development/implementing-domain-specific-languages-xtext-and-xtend-second-edition

hope it helps
Lorenzo

[Updated on: Tue, 18 October 2016 03:58] by Moderator

Re: How to generate code from Xbase expressions [message #1745820 is a reply to message #1745363]

Mon, 17 October 2016 17:40

Eclipse User

Lorenzo, thanks for the pointer! You may want to remove the period from the end of the URL though. Smile