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package conv
import (
"reflect"
"github.com/pkg/errors"
)
// InterfaceSlice converts an array or slice of any type into an []interface{}
// for use in functions that expect this.
func InterfaceSlice(slice interface{}) ([]interface{}, error) {
// avoid all this nonsense if this is already a []interface{}...
if s, ok := slice.([]interface{}); ok {
return s, nil
}
s := reflect.ValueOf(slice)
kind := s.Kind()
switch kind {
case reflect.Slice, reflect.Array:
l := s.Len()
ret := make([]interface{}, l)
for i := 0; i < l; i++ {
ret[i] = s.Index(i).Interface()
}
return ret, nil
default:
return nil, errors.Errorf("expected an array or slice, but got a %T", s)
}
}
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