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POHow to configure Xtext mwe.Reader to fill the root element in a slot
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  1. POHow to configure Xtext mwe.Reader to fill the root element in a slot
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    copied!<p><em>I am using Xtext 2.0 with MWE 1 and XPand, but I guess the Problem for MWE 2 and XTend is exactly the same.</em></p> <p>My Xtext grammer looks like this (excerpt):</p> <pre><code>grammer org.test.Test with org.eclipse.xtext.common.Terminals generate test "http://www.test.org/test/Test Model : "COMMON STUFF" "{" (formatterDefs+=FormatterDef)* "}" ... FormatterDef : "Formatter" name=ID ":" formatter=STRING; </code></pre> <p>When I use this mwe definiton (excerpt):</p> <pre><code>&lt;component class="org.eclipse.xtext.mwe.Reader" path="${project.src.directory}/xtext/model/" &gt; &lt;register class="org.test.TestStandaloneSetup"/&gt; &lt;load slot='formatterDefs' type='FormatterDef'/&gt; &lt;/component&gt; &lt;component class="org.eclipse.xpand2.Generator"&gt; &lt;metaModel class="org.eclipse.xtend.typesystem.emf.EmfRegistryMetaModel"/&gt; &lt;expand value="templates::Formatter::formatterTxt FOREACH formatterDefs"/&gt; &lt;/component&gt; </code></pre> <p>So the slot <code>formatterDefs</code> is filled with all <code>FormaterDef</code>, and then this is used for the template, and every think works fine.</p> <p><strong>But I have some templates that requires the model root element, named <code>Model</code> in the grammar. So I tryed to use</strong></p> <pre><code>&lt;load slot='formatterDefs' type='FormatterDef'/&gt; </code></pre> <p>and </p> <pre><code>&lt;expand value="templates::Main::main FOREACH model"/&gt; </code></pre> <p>instead.</p> <p>But then I get this warning:</p> <blockquote> <p><strong>org.eclipse.xtext.mwe.SlotEntry - Could not find any exported element of type 'Model' -> Slot 'model' is empty.</strong></p> </blockquote> <p>And the slot contains an empty list.</p> <p>So my Question is: <strong>what do I need to do, to get the root <code>Model</code> into my templates?</strong></p>
 

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