feat(ns-asyncapi-2-0): add components/parameters support

Refs #304

apidom/packages/apidom-ns-asyncapi-2-0/src/refractor/specification.ts

@@ -39,6 +39,7 @@ import ParameterDescriptionVisitor from './visitors/async-api-2-0/parameter/Desc
 import ParameterLocationVisitor from './visitors/async-api-2-0/parameter/LocationVisitor';
 import ComponentsVisitor from './visitors/async-api-2-0/components';
 import ComponentsSchemasVisitor from './visitors/async-api-2-0/components/SchemasVisitor';
+import ComponentParametersVisitor from './visitors/async-api-2-0/components/ParametersVisitor';
 import OperationVisitor from './visitors/async-api-2-0/operation';
 import ChannelsVisitor from './visitors/async-api-2-0/channels';
 import ChannelBindingsVisitor from './visitors/async-api-2-0/channel-bindings';
@@ -174,6 +175,7 @@ const specification = {
           $visitor: ComponentsVisitor,
           fixedFields: {
             schemas: ComponentsSchemasVisitor,
+            parameters: ComponentParametersVisitor,
           },
         },
         Reference: {

apidom/packages/apidom-ns-asyncapi-2-0/src/refractor/visitors/async-api-2-0/components/ParametersVisitor.ts

@@ -0,0 +1,40 @@
+import stampit from 'stampit';
+import { ObjectElement, Element } from 'apidom';
+
+import ReferenceElement from '../../../../elements/Reference';
+import MapVisitor from '../../generics/MapVisitor';
+import FallbackVisitor from '../../FallbackVisitor';
+import { appendMetadata } from '../../../metadata';
+import { isParameterLikeElement, isReferenceLikeElement } from '../../../predicates';
+import { isReferenceElement } from '../../../../predicates';
+
+const ParametersVisitor = stampit(MapVisitor, FallbackVisitor, {
+  props: {
+    specPath: (element: Element) => {
+      // eslint-disable-next-line no-nested-ternary
+      return isReferenceLikeElement(element)
+        ? ['document', 'objects', 'Reference']
+        : isParameterLikeElement(element)
+        ? ['document', 'objects', 'Parameter']
+        : ['value'];
+    },
+  },
+  init() {
+    this.element = new ObjectElement();
+    appendMetadata(['parameters'], this.element);
+  },
+  methods: {
+    ObjectElement(objectElement: ObjectElement) {
+      // @ts-ignore
+      const result = MapVisitor.compose.methods.ObjectElement.call(this, objectElement);
+
+      this.element.filter(isReferenceElement).forEach((referenceElement: ReferenceElement) => {
+        referenceElement.setMetaProperty('referenced-element', 'parameter');
+      });
+
+      return result;
+    },
+  },
+});
+
+export default ParametersVisitor;