Simple Workflow

Having the following declaration in one of your project's packages:

//go:generate stroo -type=SimpleTestData -output=easy_gen.go -template=./../templates/simple_example.tmpl
type SimpleTestData struct {
	Name  string
	Phone string
}

and the example.tmpl template defined as following:

{{ if declare "Print" }}{{ end }}{{/* pass kind of methods we're going to generate */}}

{{/* the main template */}}
{{ define "Print" }}
	{{- with . }}
        func (st {{ .Kind }}) Print() string {
		var sb strings.Builder
		{{ range .Fields -}}
            {{ if .IsString -}}
sb.WriteString("{{.Prefix}}{{.Name}}="+{{ if .IsPointer }}*{{ end }}st.{{.Prefix}}{{.Name}}+"\n")
            {{ else }}{{/* a good practice to signal developers unhandled cases via TODO */}}
                // TODO : unhandled field {{.Kind }}
            {{ end }}
		{{ end }}
        return sb.String()
        }
	{{ end }}
{{ end }}

{{/* extract the selected type indicated by params */}}
{{ $main := structByKey .SelectedType }}
{{/* using with ensures that is not nil*/}}
{{- with $main -}}
	{{/* we apply the defined template */}}
	{{ template "Print" . }}
{{ end }}

Running go generate in that folder will produce a file named easy_gen.go which will look like this:

// Generated on Thu Feb 13 15:00:07 by Stroo [https://github.com/badu/stroo]
// Do NOT bother with altering it by hand : use the tool
// Arguments at the time of generation:
// -debugPrint=false -output=easy_gen.go -serve=false -target= -template=./../templates/simple_example.tmpl -testMode=false -type=SimpleTestData

func (st SimpleTestData) Print() string {
        var sb strings.Builder
        sb.WriteString("Name=" + st.Name + "\n")
        sb.WriteString("Phone=" + st.Phone + "\n")
        return sb.String()
}