Function getFields

schema.go:691–725

getFields performs a breadth-first search for all fields, including embedded ones. It may return multiple fields with the same name, the first of which represents the outermost declaration.

(typ reflect.Type, visited map[reflect.Type]struct{})

// ones. It may return multiple fields with the same name, the first of which
// represents the outermost declaration.
func getFields(typ reflect.Type, visited map[reflect.Type]struct{}) []fieldInfo {
	fields := make([]fieldInfo, 0, typ.NumField())
	var embedded []reflect.StructField

	if _, ok := visited[typ]; ok {
		return fields
	}
	visited[typ] = struct{}{}

	for i := 0; i < typ.NumField(); i++ {
		f := typ.Field(i)
		if !f.IsExported() {
			continue
		}

		if f.Anonymous && f.Tag.Get("json") == "" {
			embedded = append(embedded, f)
			continue
		}

		fields = append(fields, fieldInfo{typ, f})
	}

	for _, f := range embedded {
		newTyp := f.Type
		for newTyp.Kind() == reflect.Pointer {
			newTyp = newTyp.Elem()
		}
		if newTyp.Kind() == reflect.Struct {
			fields = append(fields, getFields(newTyp, visited)...)
		}
	}

	return fields
}

// SchemaProvider is an interface that can be implemented by types to provide
// a custom schema for themselves, overriding the built-in schema generation.