Behavior of complex types

[ianlopshire]

The behavior of more complex types need to be defined/implemented.

• nested structs with tag
• nested structs without tag
• embedded struct with tag
• embedded struct without tag

type Nested struct {
	F1 string `fixed:"1,10"`
	F2 struct {
		E1 string `fixed:"11,20"`
		E2 string `fixed:"21,30"`
	}
}

type NestedWithTag struct {
	F1 string `fixed:"1,10"`
	F2 struct {
		E1 string `fixed:"1,10"`
		E2 string `fixed:"11,20"`
	} `fixed:"11,30"`
}

type S1 struct {
	F1 string `fixed:"1,10"`
	F4 string `fixed:"31,40"`
}

type Embedded struct {
	S1
	F2 string `fixed:"11,20"`
	F3 string `fixed:"21,30"`
}

type S2 struct {
	F3 string `fixed:"1,10"`
	F4 string `fixed:"11,20"`
}

type EmbeddedWithTag struct {
	F2 string `fixed:"1,10"`
	F3 string `fixed:"11,20"`
	S2 `fixed:"21,40"`
}