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Code Issues Releases Activity

add struct tag support

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This commit is contained in:
miraclesu
2013-07-24 12:20:42 +08:00
parent 4c6163baa0
commit 92db56c0cb
4 changed files with 78 additions and 30 deletions
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21
validation/util.go
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@ -48,6 +48,11 @@ type ValidFunc struct {
type Funcs map[string]reflect.Value
func (f Funcs) Call(name string, params ...interface{}) (result []reflect.Value, err error) {
defer func() {
if r := recover(); r != nil {
err = r.(error)
}
}()
if _, ok := f[name]; !ok {
err = fmt.Errorf("%s does not exist", name)
return
@ -109,7 +114,7 @@ func parseFunc(vfunc string) (v ValidFunc, err error) {
err = fmt.Errorf("%s require %d parameters", vfunc, num)
return
}
v = ValidFunc{Name: vfunc}
v = ValidFunc{vfunc, []interface{}{vfunc}}
return
}
@ -145,12 +150,13 @@ func numIn(name string) (num int, err error) {
err = fmt.Errorf("doesn't exsits %s valid function", name)
return
}
// sub *Validation obj and key
num = fn.Type().NumIn() - 3
return
}
func trim(name string, s []string) (ts []interface{}, err error) {
ts = make([]interface{}, len(s))
ts = make([]interface{}, len(s), len(s)+1)
fn, ok := funcs[name]
if !ok {
err = fmt.Errorf("doesn't exsits %s valid function", name)
@ -158,14 +164,17 @@ func trim(name string, s []string) (ts []interface{}, err error) {
}
for i := 0; i < len(s); i++ {
var param interface{}
// skip *Validation and obj params
if param, err = magic(fn.Type().In(i+2), strings.TrimSpace(s[i])); err != nil {
return
}
ts[i] = param
}
ts = append(ts, name)
return
}
// modify the parameters's type to adapt the function input parameters' type
func magic(t reflect.Type, s string) (i interface{}, err error) {
switch t.Kind() {
case reflect.Int:
@ -174,10 +183,16 @@ func magic(t reflect.Type, s string) (i interface{}, err error) {
i = s
case reflect.Ptr:
if t.Elem().String() != "regexp.Regexp" {
err = fmt.Errorf("%s does not support", t.Elem().String())
err = fmt.Errorf("does not support %s", t.Elem().String())
return
}
i, err = regexp.Compile(s)
default:
err = fmt.Errorf("does not support %s", t.Kind().String())
}
return
}
func mergeParam(v *Validation, obj interface{}, params []interface{}) []interface{} {
return append([]interface{}{v, obj}, params...)
}