add links for dependecy key attributes

decoder/links.go

@@ -28,6 +28,30 @@ func (d *PathDecoder) linksInBody(body hcl.Body, bodySchema *schema.BodySchema)
 	content := decodeBody(body, bodySchema)
 	links := make([]lang.Link, 0)
 
+	// Attributes acting as dependency keys can have links associated
+	for _, attr := range content.Attributes {
+		aSchema, ok := bodySchema.Attributes[attr.Name]
+
+		if !ok {
+			if bodySchema.AnyAttribute == nil {
+				// skip unknown attribute
+				continue
+			}
+			aSchema = bodySchema.AnyAttribute
+		}
+
+		if aSchema.IsDepKey && bodySchema.DocsLink != nil {
+			u, err := d.docsURL(bodySchema.DocsLink.URL, "documentLink")
+			if err == nil {
+				links = append(links, lang.Link{
+					URI:     u.String(),
+					Tooltip: bodySchema.DocsLink.Tooltip,
+					Range:   attr.Expr.Range(),
+				})
+			}
+		}
+	}
+
 	for _, block := range content.Blocks {
 		blockSchema, ok := bodySchema.Blocks[block.Type]
 		if !ok {

decoder/links_test.go

@@ -118,8 +118,8 @@ func TestLinksInFile_json(t *testing.T) {
 	})
 
 	_, err := d.LinksInFile("test.tf.json")
-	unknownFormatErr := &UnknownFileFormatError{}
-	if !errors.As(err, &unknownFormatErr) {
-		t.Fatal("expected UnknownFileFormatError for JSON body")
+	noSchemaErr := &NoSchemaError{}
+	if !errors.As(err, &noSchemaErr) {
+		t.Fatal("expected NoSchemaError for JSON body")
 	}
 }