Allow @context in @reverse nodes

rubensworks · Nov 19, 2021 · 3757e00 · 3757e00
1 parent 6b573c4
commit 3757e00
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Showing 2 changed files with 18 additions and 4 deletions.
diff --git a/lib/JsonLdParser.ts b/lib/JsonLdParser.ts
@@ -214,10 +214,10 @@ export class JsonLdParser extends Transform implements RDF.Sink<EventEmitter, RD
     this.parsingContext.emittedStack[depth] = true;
     let handleKey = true;
 
-    // Keywords inside @reverse is not allowed
-    if (ContextUtil.isValidKeyword(key) && parentKey === '@reverse') {
+    // Keywords inside @reverse is not allowed apart from @context
+    if (ContextUtil.isValidKeyword(key) && parentKey === '@reverse' && key !== '@context') {
       this.emit('error', new ErrorCoded(`Found the @id '${value}' inside an @reverse property`,
-        ERROR_CODES.INVALID_REVERSE_PROPERTY_MAP));
+          ERROR_CODES.INVALID_REVERSE_PROPERTY_MAP));
     }
 
     // Skip further processing if one of the parent nodes are invalid.

diff --git a/test/JsonLdParser-test.ts b/test/JsonLdParser-test.ts
@@ -1723,7 +1723,21 @@ describe('JsonLdParser', () => {
           ]);
         });
       });
-
+      describe('a reversed triple with context', () => {
+        it('@context is added to predicate in reverse', async () => {
+          const stream = streamifyString(`
+{
+  "@id": "http://ex.org/obj1",
+  "@reverse": {
+    "@context": { "@vocab" : "https://cdn.jsdelivr.net/gh/treecg/specification@master/tree.ttl#" },
+    "view": {"@id": "http://ex.org/obj2" }
+  }
+}`);
+          return expect(await arrayifyStream(stream.pipe(parser))).toBeRdfIsomorphic([
+            DF.quad(DF.namedNode('http://ex.org/obj2'), DF.namedNode('https://cdn.jsdelivr.net/gh/treecg/specification@master/tree.ttl#view'), DF.namedNode('http://ex.org/obj1')),
+          ]);
+        });
+      });
       describe('a reversed triple within a regular triple', () => {
         it('with @id\'s', async () => {
           const stream = streamifyString(`