github.com/hairyhenderson/gomplate/v3@v3.11.7/internal/conv/conv.go (about)

     1  package conv
     2  
     3  import (
     4  	"reflect"
     5  
     6  	"github.com/pkg/errors"
     7  )
     8  
     9  // InterfaceSlice converts an array or slice of any type into an []interface{}
    10  // for use in functions that expect this.
    11  func InterfaceSlice(slice interface{}) ([]interface{}, error) {
    12  	// avoid all this nonsense if this is already a []interface{}...
    13  	if s, ok := slice.([]interface{}); ok {
    14  		return s, nil
    15  	}
    16  	s := reflect.ValueOf(slice)
    17  	kind := s.Kind()
    18  	switch kind {
    19  	case reflect.Slice, reflect.Array:
    20  		l := s.Len()
    21  		ret := make([]interface{}, l)
    22  		for i := 0; i < l; i++ {
    23  			ret[i] = s.Index(i).Interface()
    24  		}
    25  		return ret, nil
    26  	default:
    27  		return nil, errors.Errorf("expected an array or slice, but got a %T", s)
    28  	}
    29  }