Function Diff

internal/node/node.go:303–331

Diff returns an array of strings describing differences between two nodes

(node1, node2 *yaml.Node)

// Diff returns an array of strings describing differences between two nodes
func Diff(node1, node2 *yaml.Node) (diffs []string) {
	switch {
	case node1 == nil && node2 == nil:
		return nil
	case node1 == nil:
		diffs = append(diffs, fmt.Sprintf("Node2: %v", node2.Value))
	case node2 == nil:
		diffs = append(diffs, fmt.Sprintf("Node1: %v", node1.Value))
	default:
		if node1.Kind != node2.Kind {
			diffs = append(diffs, fmt.Sprintf("Node1: %v, Node2: %v", node1.Value, node2.Value))
		} else {
			switch node1.Kind {
			case yaml.MappingNode:
				diffs = appendMappingDiffs(diffs, node1, node2)
			case yaml.SequenceNode:
				diffs = appendSequenceDiffs(diffs, node1, node2)
			case yaml.ScalarNode:
				if node1.Value != node2.Value {
					diffs = append(diffs,
						fmt.Sprintf("Node1: %v, Node2: %v", node1.Value, node2.Value))
				}
			default:
				diffs = append(diffs, fmt.Sprintf("Unsupported node kind: %v", node1.Kind))
			}
		}
	}
	return diffs
}

func appendMappingDiffs(diffs []string, node1, node2 *yaml.Node) []string {
	keys1 := make(map[string]yaml.Node)