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Call functions from other files [message #1725711]

Mon, 07 March 2016 03:46

Eclipse User

Hi,

I'm developing a grammar where user will be able to declare functions in the editor or in other files. I would like this editor to be able to recognize when the user call a function developed in another file.

The idea I had for the grammar validation part was to copy function declarations in the editor's text, but hidden of this editor.

For example:

//Part hidden
def addition (var a, var b, var c){
        c=a+b;
}
//Part typed by the user in the editor
var a=1;
var b=2;
var c=0;
addition(a,b,c);

I tried to use the setVisibleRegion of my editor's viewer, but it doesn't work.

How could I do that ?

Regards

Re: Call functions from other files [message #1725723 is a reply to message #1725711]

Mon, 07 March 2016 05:02

Eclipse User

hi,

i dont get that.
in xtext by default named things from one file is visible from other files.
so you want need this hidden thing at all

[Updated on: Mon, 07 March 2016 05:09] by Moderator

Re: Call functions from other files [message #1725731 is a reply to message #1725723]

Mon, 07 March 2016 05:29

Eclipse User

Hi,

So how do I import script written in other files to my editor (an implicit import ) ?

Re: Call functions from other files [message #1725736 is a reply to message #1725731]

Mon, 07 March 2016 05:53

Eclipse User

By default you have to do nothing. How does your grammar and scoping look
like

Re: Call functions from other files [message #1725754 is a reply to message #1725736]

Mon, 07 March 2016 07:45

Eclipse User

Well, currently I can't test other files because the data files manager is not working yet. So I just supposed that files created would not be detected in the editor.

Function part of my grammar looks like this:

CalcDeclaration  returns newFunction:
	'def' name=STR '('inParameters+=InVariable (',' inParameters+=InVariable )* (',' outParameters+=OutVariable)* ')' '{'
		instructions+=Instruction*
	'}'
;

	
FunctionCall:
	functionName=[newFunction|STR] '('(arguments+=[Assignable|STR] ',')*  arguments+=[Assignable|STR] ')' 
	;

My ScopeProvider is currently empty.

Re: Call functions from other files [message #1725759 is a reply to message #1725754]

Mon, 07 March 2016 08:19

Eclipse User

this should work fine if both files are in the same project (in eclipse) or in the same resourceset standalone.

Re: Call functions from other files [message #1725760 is a reply to message #1725759]

Mon, 07 March 2016 08:27

Eclipse User

They are in the same project but not in the same eclipse plugin

I mean, this application will store files containing functions. This files will be managed by a plugin (and stored in a ftp server).
In this application there are GEF components used to display values. This values can be calculated programmatically with an editor using a language (with xtext). You think that these editors will be able to find automatically the functions written in the files ?

[Updated on: Mon, 07 March 2016 08:34] by Moderator

Re: Call functions from other files [message #1725764 is a reply to message #1725760]

Mon, 07 March 2016 08:39

Eclipse User

if you adapt the scoping accordingly. and or create the resourceset properly (have no idea what you exactly do)

Re: Call functions from other files [message #1725768 is a reply to message #1725764]

Mon, 07 March 2016 09:02

Eclipse User

It's a big project so it's difficult to explain but:

A manager plugin provides files containing functions written with my grammar to be loaded.
My editor's plugin can access to this manager. So I want that, when I open an editor, files are read and function references are created. The goal is: when I write a function call in the editor, it's validated when the function is in one of this file.

I'm trying to see how to adapt scoping

[Updated on: Mon, 07 March 2016 09:02] by Moderator

Re: Call functions from other files [message #1725774 is a reply to message #1725768]

Mon, 07 March 2016 09:45

Eclipse User

Du you use embedded editor?

Re: Call functions from other files [message #1725777 is a reply to message #1725774]

Mon, 07 March 2016 10:10

Eclipse User

Yes and I initialize it like this:

        EmbeddedEditorFactory factory = injector.getInstance(EmbeddedEditorFactory.class);
        final EmbeddedEditor handle = factory.newEditor(resourceProvider).showErrorAndWarningAnnotations().withParent(composite);

        final EmbeddedEditorModelAccess partialEditor = handle.createPartialEditor(true);

        ScriptStandaloneSetup.doSetup();
        if (script != null) {
            String s = script.toString().trim().replaceAll("[;]", ";\n").replaceAll("[{]", "{\n");
            handle.getDocument().set(script.toString());
            handle.getViewer().setVisibleRegion(0, script.toString().length());
        } else {
            handle.getDocument().set("\n");
            handle.getViewer().setVisibleRegion(0, 1);
        }

Re: Call functions from other files [message #1725780 is a reply to message #1725777]

Mon, 07 March 2016 10:14

Eclipse User

then i think it is the best to have all in the same file.
you can tweak the visible part using

EmbeddedEditorModelAccess.setModel(XtextDocument document, String prefix, String editablePart, String suffix)

Re: Call functions from other files [message #1725790 is a reply to message #1725780]

Mon, 07 March 2016 11:39

Eclipse User

I don't have a good version of Xtext (there is no setModel, just updateModel...). But it works perfectly by using updatePrefix. So my problem is fixed

Thanks for your help Christian Wink

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