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[XPand] questions in using AROUND [message #650857]

Wed, 26 January 2011 22:05

Thomas Lauria

Messages: 4
Registered: January 2011

Junior Member

Hey there,
first of all: I am new here and if I am violating the netiquette somehow, give me a hint please.

My Problem: My AROUND Statement in a XPand Template won't be weaved around the code.
I try to use an AROUND statement similar to the following, all in one file:

«DEFINE foo FOR FooType» FOO «ENDDEFINE»
«DEFINE foo FOR BarType» BAR «ENDDEFINE»

«AROUND foo FOR FooType»
ABC «targetDef.proceed()» 123
«ENDAROUND»

«EXPAND foo FOR FooType»

I am expecting as output: "ABC FOO 123" but I am getting only " FOO ", so IMHO the AROUND is not applied.
I tried also the AROUND with the fully qualified name bar::bar::foo and with wildcards "*foo*", but nothing happens.

Can't I use AROUNDs in the same file as the DEFINE?
Has I to prepare something in the workflow to use the AROUND statement?
Or is there another common pitfall in using AROUNDs?

I am using the Eclipse Helios Release.

Thank you,
Thomas

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Re: [XPand] questions in using AROUND [message #650860 is a reply to message #650857]

Wed, 26 January 2011 22:51

Christian Dietrich

Messages: 14593
Registered: July 2009

Senior Member

Hi,

yes you can have the advices in the same file but this is a bad bad practice

but your advices have to be full qualified

«AROUND templates::root::element FOR test::Element»
//this is the element «name»
«targetDef.proceed()»
«ENDAROUND»

and if cource you have to prepare something in the workflow

    <component adviceTarget="generator"	id="reflectionAdvice" class="org.eclipse.xpand2.GeneratorAdvice">
		<advices value="templates::root"/>
	</component>
	
.....
	
	<component class="org.eclipse.xpand2.Generator" id="generator">
		<metaModel id="mm"
			class="org.eclipse.xtend.typesystem.emf.EmfRegistryMetaModel"/>

		<expand
			value="templates::root::Root FOR model" />
			<outlet path="src-gen" >
				<postprocessor class="org.eclipse.xpand2.output.JavaBeautifier" />
			</outlet>
	</component>

~Christian

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

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