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cross-references without grammar [message #1743678]

Sun, 18 September 2016 21:48

Jonathan L.

Messages: 24
Registered: May 2016

Junior Member

Hi,

I was wondering if it's possible to add cross-references outside of the grammar.
I am a bit constrained to add them inside of it.

Is there a way, maybe via scopeprovider, to apply that?

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Re: cross-references without grammar [message #1743697 is a reply to message #1743678]

Mon, 19 September 2016 06:01

Christian Dietrich

Messages: 14669
Registered: July 2009

Senior Member

Can you be a bit more specific in the question

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: cross-references without grammar [message #1743700 is a reply to message #1743678]

Mon, 19 September 2016 06:24

Anton Kosyakov

Messages: 9
Registered: March 2016

Junior Member

What is your case? Why cannot you change a grammar?

Anyway you can install synthetic references as a derived state with SyntheticLinkingSupport:https://github.com/eclipse/xtext-core/blob/e1a4782403497dd27f73276c409049a3d3ecdcf9/org.eclipse.xtext/src/org/eclipse/xtext/linking/lazy/SyntheticLinkingSupport.java#L35

Get professional support from the Xtext committers at www.typefox.io.

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Re: cross-references without grammar [message #1743712 is a reply to message #1743700]

Mon, 19 September 2016 07:50

Jonathan L.

Messages: 24
Registered: May 2016

Junior Member

Quote:

What is your case? Why cannot you change a grammar?

The problem is that I've just ported a grammar from a language and not defined it by myself.
There I got multiple rules using the same terminal rule.
for example:

Dcl_var:
	'var' type=Type name=ID_VAR;
Dcl_int:
	'event' type=Type name=ID_VAR;

when I now define cross-references in the expression rule e.g. it can't handle both rules.

Quote:

Can you be a bit more specific in the question

I want to make a cross-reference to both of the rules. Because it didn't work in the grammar I was asking if there is another way to define them.

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Re: cross-references without grammar [message #1743713 is a reply to message #1743712]

Mon, 19 September 2016 07:54

Christian Dietrich

Messages: 14669
Registered: July 2009

Senior Member

I dont get that Point:

AbstractDecl: Dcl_var | Dcl_int;

MyRef: ref=[AbstractDecl|ID_VAR]

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: cross-references without grammar [message #1743728 is a reply to message #1743713]

Mon, 19 September 2016 09:43

Jonathan L.

Messages: 24
Registered: May 2016

Junior Member

Hm okay, thanks!
I've tried it before with some kind of
( var=[Dcl_var|ID_VAR] | event=[Dcl_int|ID_VAR] )
which didn't worked for both

But now it works, thank you

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Re: cross-references without grammar [message #1743986 is a reply to message #1743728]

Wed, 21 September 2016 09:59

Jonathan L.

Messages: 24
Registered: May 2016

Junior Member

I got one more question to this..
Is it not possible to cross-reference a list of name?
like:
name+=ID_VAR ( ',' name+=ID_VAR )*

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Re: cross-references without grammar [message #1743998 is a reply to message #1743986]

Wed, 21 September 2016 11:47

Christian Dietrich

Messages: 14669
Registered: July 2009

Senior Member

You have to adapt idefaultresourcedescrptionstrategy to put a element under different names into the index. Locally you need to adapt importednamespaceawarelocalscopeprovider

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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