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Java Proposal [message #818628]

Sun, 11 March 2012 19:31

Eclipse User

Hi all,
I'm new on the forum and xtext... I have to simulate the Java import for my DSL, this is the code:

ImportDeclaration: 
'import' ('static')? import = QualifiedNameWithWildcard ';'

QualifiedNameWithWildcard:
  QualifiedName '.*'?
;

QualifiedName:
  ID ('.' ID)*
;

now I want suggest the package and classes like Eclipse. How can I retrieve some classes or package on the classpath and add this on the MYDSLProposalProvider?

Re: Java Proposal [message #818853 is a reply to message #818628]

Mon, 12 March 2012 03:40

Eclipse User

Hi,

you can ask the "index" for its elements.
some code for starting can be found here:
http://www.eclipse.org/forums/index.php/mv/msg/261440/754503/#msg_754503
http://www.eclipse.org/forums/index.php/m/767941/#msg_767941

~Christian

Re: Java Proposal [message #818926 is a reply to message #818853]

Mon, 12 March 2012 05:35

Eclipse User

Hi Christian!
Thanks for your reply, my DSL also support the Java classes how can I add also the Java classes?

Re: Java Proposal [message #819291 is a reply to message #818926]

Mon, 12 March 2012 14:24

Eclipse User

Is your java stuff custom build or based on Xbase?
Never the less a look at ITypesProposalProvider might it be worth

~Christian

Re: Java Proposal [message #819780 is a reply to message #819291]

Tue, 13 March 2012 06:17

Eclipse User

It's a custom build... Thanks, do you know where I can find some documentation about the use of the ITypesProposalProvider ?

Re: Java Proposal [message #819791 is a reply to message #819780]

Tue, 13 March 2012 06:26

Eclipse User

Hi I fear there is no docs and you have to look at the usages in
Xbase/Xtend

Re: Java Proposal [message #819832 is a reply to message #819791]

Tue, 13 March 2012 07:26

Eclipse User

@Inject
ITypesProposalProvider javaProposal;
@Inject
ITypeProvider.Factory typeProviderFactory;
...
ResourceSet set = model.eResource().getResourceSet();
ITypeProvider tp = typeProviderFactory.findTypeProvider(set);
if (tp == null) {
     tp = typeProviderFactory.createTypeProvider(set);
}
if (tp == null) {
     return;
}try {
  JvmType t = tp.findTypeByName(java.util.Iterator.class.getName());
  Filter filter = TypeMatchFilters.and(TypeMatchFilters.isPublic(), TypeMatchFilters.canInstantiate());
  javaProposal.createSubTypeProposals(t, this, context, filter, acceptor);
} catch (TypeNotFoundException e) {}

with this code I retrieve some classes like Iterator, how can I retrieve more classes on classpath? How can I use findTypeByName to have more JvmType?

Re: Java Proposal [message #820082 is a reply to message #819832]

Tue, 13 March 2012 13:53

Eclipse User

Hi,

are you sure there is anything else than default java classes on the classpath? and why do you call createSubTypeProposals and not createTypeProposals
as XbaseProposalProvider does.

~Christian

Re: Java Proposal [message #820153 is a reply to message #820082]

Tue, 13 March 2012 15:57

Eclipse User

Hi, I need just the default java classes but with tp.findTypeByName(java.util.Iterator.class.getName()) i retrieve only the classes with the name similar to java.util.Iterator.

Re: Java Proposal [message #820161 is a reply to message #820153]

Tue, 13 March 2012 16:08

Eclipse User

and what is the problem?

Re: Java Proposal [message #820244 is a reply to message #820161]

Tue, 13 March 2012 18:29

Eclipse User

Hi Christian, sorry but I'm new on XText...
How can I have more classes and not only the classes with the name similar to java.utili.Iterator? Is there a method different from fyndTypeByName to retrieve classes? I need a proposal like this:

ImportDeclaration:
'import' import= [jvmTypes::JvmType|Name] ';';

but with this grammar I can't have import with wildcard

Re: Java Proposal [message #820460 is a reply to message #820244]

Wed, 14 March 2012 02:36

Eclipse User

Hi,

although you are a newbie you are trying advanced things. And what i still do not understand is why you dont call org.eclipse.xtext.common.types.xtext.ui.ITypesProposalProvider.createTypeProposals(ICompletionProposalFactory, ContentAssistContext, EReference, ICompletionProposalAcceptor) as i told you.

~Christian

Re: Java Proposal [message #820570 is a reply to message #820460]

Wed, 14 March 2012 05:43

Eclipse User

You're right sorry, but how can I get the ICompletionProposalFactory

Re: Java Proposal [message #820582 is a reply to message #820570]

Wed, 14 March 2012 05:53

Eclipse User

same as before: look into the spurcecode what base does. I'd have to
do this too.

Re: Java Proposal [message #820627 is a reply to message #820582]

Wed, 14 March 2012 07:09

Eclipse User

sorry I cannot figure out how I can get an instance of ICompletionProposalFactory