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Content Assist, enum types and templates [message #723840]

Fri, 09 September 2011 16:20

Michel Simeon

Messages: 130
Registered: December 2009

Senior Member

In a previous thread of this forum (http://www.eclipse.org/forums/index.php/t/236795/) I was given indications on how to solve my problem using completeKeyword in the ui proposal provider. I got it to solve my problem but I do not fully understand the way things work !!!

In order to test if an enum type value had been assigned to a variable or not I had to add dummy values such as:

enum PlanInPlanType:
PlanInPlanTypeNull |
annual = "annual" | phastot = "phastot"
| phasadd = "phasadd" | phasold = "phasold"
;

Now I would like to have some templates like:

<template name="-PlanPlanItem" description="template for a PlanPlanItem"
id="fr.msimeon.mads.mads.PlanPlanItem"
context="fr.msimeon.mads.Mads.PlanItem"
enabled="true">${Plan:CrossReference('PlanItem.planItemRef')} ${planCalcType:Enum('PlanInPlanType')} [ 0 0 ]; // or read function
</template>

corresponding to one of the options of the PlanItem rule:
PlanItem: (
('run' scriptRef = [Script|ID] SEMI)
| ( planItemRef = [Entity|ID]
(
commCalcType = CommInPlanType
| planCalcType = PlanInPlanType
| herdCalcType = HerdInPlanType // can only be phased
)
(('[' (values+= Value )+ ']')| (levelvalues=ReadFunc))
SEMI
)
);

Although direct CA (through custom completeKeyword) gives me a list with only the four meaningful values, the list from the template also includes the PlanInPlanTypeNull value. Is there a reasonable way to control that ?

Thanks again to the XText team for its great support.

MS

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Re: Content Assist, enum types and templates [message #723879 is a reply to message #723840]

Fri, 09 September 2011 18:47

Alexander Nittka

Messages: 1193
Registered: July 2009

Senior Member

Hi,

just as you adapted content assist, you will probably have to adapt the template variable resolution. Start looking at EnumTemplateVariableResolver. At a first glance, it should not be too difficult to adapt that code to your needs.

Alex

Need training, onsite consulting or any other kind of help for Xtext?
Go visit http://xtext.itemis.com or send a mail to xtext@itemis.de

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Re: Content Assist, enum types and templates [message #723928 is a reply to message #723879]

Fri, 09 September 2011 21:42

Michel Simeon

Messages: 130
Registered: December 2009

Senior Member

Thanks Alex for the quick reaction.

I'll give it a try and write a custom EnumTemplateVariableResolver.

But I have no idea on where it fits. There is a hook to adapt the proposal provider where I could put my own completeKeyword method. Where do I include, insert, bind or inject my resolver ?

MS

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Re: Content Assist, enum types and templates [message #723931 is a reply to message #723928]

Fri, 09 September 2011 21:51

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Hi,

	public Class<? extends EnumTemplateVariableResolver> bindEnumTemplateVariableResolver() {
		return MyEnumTemplateVariableResolver.class;
	}

doesn't work?

~Christian

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

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Re: Content Assist, enum types and templates [message #723997 is a reply to message #723931]

Sat, 10 September 2011 08:47

Michel Simeon

Messages: 130
Registered: December 2009

Senior Member

As a matter of fact it does ! This is what I had none but for some odd reason I thought it was not working.

I still have to complete MyEnumTemplateVariableResolver, but that should be no problem.

Thanks again
MS

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Re: Content Assist, enum types and templates [message #724178 is a reply to message #723997]

Sun, 11 September 2011 08:59

Michel Simeon

Messages: 130
Registered: December 2009

Senior Member

For those dealing with similar problems, you should know that the XText framework also includes a cross-reference variable resolver (org.eclipse.xtext.ui.editor.templates.CrossReferenceTemplateVariableResolver) that can also be adapted as easily as the Enum one.

Great framework indeed !!!

MS

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