diff options
Diffstat (limited to 'plugins/org.eclipse.xtend.util.stdlib/src/org/eclipse/xtend/util/stdlib/mixin.ext')
| -rw-r--r-- | plugins/org.eclipse.xtend.util.stdlib/src/org/eclipse/xtend/util/stdlib/mixin.ext | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/plugins/org.eclipse.xtend.util.stdlib/src/org/eclipse/xtend/util/stdlib/mixin.ext b/plugins/org.eclipse.xtend.util.stdlib/src/org/eclipse/xtend/util/stdlib/mixin.ext new file mode 100644 index 00000000..3025cae2 --- /dev/null +++ b/plugins/org.eclipse.xtend.util.stdlib/src/org/eclipse/xtend/util/stdlib/mixin.ext @@ -0,0 +1,23 @@ +extension org::eclipse::xtend::util::stdlib::naming; +extension org::eclipse::xtend::util::stdlib::issues; + +Object getMandatoryMixin( Object mixinModel, Object ctx, oaw::Type t ): + let m = getMixin( mixinModel, ctx, t ): m != null ? m : ( reportError( ctx, "no mixin of type "+t.name+" found in mixin model "+mixinModel.metaType.getName()+". Available mixins of that type are "+mixinModel.all(t) ) -> createEmpty(t) ); + +private Collection all( Object container, oaw::Type t ): + container.getEAllContents().select(e | t.isInstance(e) ).collect( e| e.getName() ); + +private createEmpty( oaw::Type t ): t.newInstance(); + +Object getOptionalMixin( Object mixinModel, Object ctx, oaw::Type t ): + getMixin( mixinModel, ctx, t ); + +private Object getMixin( Object mixinModel, Object ctx, oaw::Type t ): + mixinModel.getEAllContents().selectFirst(e | t.isInstance(e) && e.getName() == ctx.qualifiedName() ); + + +private Collection getEAllContents( Object o ): o.metaType.getProperty("eAllContents").get(o); +private String getName( Object o ): + let p = o.metaType.getProperty("name"): p != null ? p.get(o) : reportError(o, " has no name attribute; mixing model elements need to have a name (type: "+o.metaType+")!"); + +
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