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// +build genhostinfo
package main
import (
"fmt"
"reflect"
"sync"
"github.com/gocql/gocql"
)
func gen(clause, field string) {
fmt.Printf("if h.%s == %s {\n", field, clause)
fmt.Printf("\th.%s = from.%s\n", field, field)
fmt.Println("}")
}
func main() {
t := reflect.ValueOf(&gocql.HostInfo{}).Elem().Type()
mu := reflect.TypeOf(sync.RWMutex{})
for i := 0; i < t.NumField(); i++ {
f := t.Field(i)
if f.Type == mu {
continue
}
switch f.Type.Kind() {
case reflect.Slice:
gen("nil", f.Name)
case reflect.String:
gen(`""`, f.Name)
case reflect.Int:
gen("0", f.Name)
case reflect.Struct:
gen("("+f.Type.Name()+"{})", f.Name)
case reflect.Bool, reflect.Int32:
continue
default:
panic(fmt.Sprintf("unknown field: %s", f))
}
}
}
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