func TransformNode()

in cft/parse/transform.go [41:93]
40 lines of code
12 McCabe index (conditional complexity)

func TransformNode(n *yaml.Node) {
	// Fix badly-parsed numbers
	if n.ShortTag() == "!!float" && n.Value[0] == '0' {
		n.Tag = "!!str"
	}

	// Fix badly-parsed timestamps which are often used for versions in cloudformation
	if n.ShortTag() == "!!timestamp" {
		n.Tag = "!!str"
	}

	// Convert tag-style intrinsics into map-style
	for tag, funcName := range cft.Tags {
		if n.ShortTag() == tag {
			body := node.Clone(n)

			// Fix empty Fn values (should never be null)
			if body.Tag == "!!null" {
				body.Tag = "!!str"
			} else {
				body.Tag = ""
			}

			// Wrap in a map
			*n = yaml.Node{
				Kind: yaml.MappingNode,
				Tag:  "!!map",
				Content: []*yaml.Node{
					{
						Kind:  yaml.ScalarNode,
						Style: 0,
						Tag:   "!!str",
						Value: funcName,
					},
					body,
				},
			}

			break
		}
	}

	// Convert GetAtts
	if n.Kind == yaml.MappingNode && len(n.Content) == 2 {
		if n.Content[0].Value == "Fn::GetAtt" && n.Content[1].Kind == yaml.ScalarNode {
			parseGetAtt(n.Content[1])
		}
	}

	for _, child := range n.Content {
		TransformNode(child)
	}
}