func typeSwitch()

in codegen/header_propagate.go [88:135]

• 48 lines of code
• 12 McCabe index (conditional complexity)

func typeSwitch(key, gotype string, field *compile.FieldSpec) []string {
	var (
		ret       = []string{}
		typeParse string
		typeCast  string
		assignVal = "key"
	)
	switch gotype {
	case "int8":
		panic(fmt.Sprintf("type byte is note supported for field %q", field.Name))
	case "bool":
		typeParse = "strconv.ParseBool(key)"
		assignVal = "v"
	case "int16":
		typeParse = "strconv.ParseInt(key, 10, 16)"
		assignVal = "val"
		typeCast = "val := int16(v)\n"
	case "int32":
		typeParse = "strconv.ParseInt(key, 10, 32)"
		assignVal = "val"
		typeCast = "val := int32(v)\n"
	case "int64":
		typeParse = "strconv.ParseInt(key, 10, 64)"
		assignVal = "v"
	case "float64":
		typeParse = "strconv.ParseFloat(key, 64)"
		assignVal = "v"
	case "string":
	default:
		typeCast = "val := " + gotype + "(key)\n"
		assignVal = "val"
	}
	if len(typeParse) > 0 {
		ret = append(ret, fmt.Sprintf("if v, err := %s; err == nil {\n", typeParse))
	}
	if len(typeCast) > 0 {
		ret = append(ret, typeCast)
	}
	if !field.Required {
		ret = append(ret, fmt.Sprintf("in.%s = &%s\n", key, assignVal))
	} else {
		ret = append(ret, fmt.Sprintf("in.%s = %s\n", key, assignVal))
	}
	if len(typeParse) > 0 {
		ret = append(ret, "}\n")
	}
	return ret
}