goccy decoder supports merge maps

pkg/yqlib/candidate_node_goccy_yaml.go

@@ -167,8 +167,13 @@ func (o *CandidateNode) UnmarshalGoccyYAML(node ast.Node, cm yaml.CommentMap, an
 		o.Value = aliasNode.Value.String()
 		o.Alias = anchorMap[o.Value]
 
+	case ast.MergeKeyType:
+		log.Debugf("UnmarshalYAML -  a merge key")
+		o.Kind = ScalarNode
+		o.Value = "<<"
+
 	default:
-		log.Debugf("UnmarshalYAML -  node idea of the type!!")
+		log.Debugf("UnmarshalYAML -  no idea of the type!!\n%v: %v", node.Type(), node.String())
 	}
 	log.Debugf("KIND: %v", o.Kind)
 	return nil

pkg/yqlib/candidate_node_yaml.go

@@ -78,9 +78,6 @@ func (o *CandidateNode) copyToYamlNode(node *yaml.Node) {
 	node.Value = o.Value
 	node.Anchor = o.Anchor
 
-	// node.Alias = TODO - find Alias in our own structure
-	// might need to be a post process thing
-
 	node.HeadComment = o.HeadComment
 
 	node.LineComment = o.LineComment

pkg/yqlib/goccy_yaml_test.go

@@ -219,12 +219,24 @@ var goccyYamlFormatScenarios = []formatScenario{
 	// 	expression:  "explode(.)",
 	// 	expected:    "a: mike\nb: mike\n",
 	// },
+	// {
+	// 	description: "multi document anchor map",
+	// 	skipDoc:     true,
+	// 	input:       "a: &remember mike\n---\nb: *remember",
+	// 	expression:  "explode(.)",
+	// 	expected:    "a: mike\n---\nb: mike\n",
+	// },
+	// {
+	// 	description: "merge anchor",
+	// 	skipDoc:     true,
+	// 	input:       "a: &remember\n  c: mike\nb:\n  <<: *remember",
+	// 	expected:    "a: &remember\n  c: mike\nb:\n  <<: *remember\n",
+	// },
 	{
-		description: "multi document anchor map",
+		description: "custom tag",
 		skipDoc:     true,
-		input:       "a: &remember mike\n---\nb: *remember",
-		expression:  "explode(.)",
-		expected:    "a: mike\n---\nb: mike\n",
+		input:       "a: !cat mike",
+		expected:    "a: !cat mike\n",
 	},
 	// {
 	// 	description: "basic - [~]",
@@ -256,6 +268,7 @@ var goccyYamlFormatScenarios = []formatScenario{
 	// 	input:       "[1, 2]",
 	// 	expected:    "[1, 2]\n",
 	// },
+
 }
 
 func testGoccyYamlScenario(t *testing.T, s formatScenario) {