Function ComposeDecodeHookFunc

decode_hooks.go:62–78

ComposeDecodeHookFunc creates a single DecodeHookFunc that automatically composes multiple DecodeHookFuncs. The composed funcs are called in order, with the result of the previous transformation.

(fs ...DecodeHookFunc)

// The composed funcs are called in order, with the result of the
// previous transformation.
func ComposeDecodeHookFunc(fs ...DecodeHookFunc) DecodeHookFunc {
	return func(f reflect.Value, t reflect.Value) (interface{}, error) {
		var err error
		data := f.Interface()

		newFrom := f
		for _, f1 := range fs {
			data, err = DecodeHookExec(f1, newFrom, t)
			if err != nil {
				return nil, err
			}
			newFrom = reflect.ValueOf(data)
		}

		return data, nil
	}
}

// OrComposeDecodeHookFunc executes all input hook functions until one of them returns no error. In that case its value is returned.
// If all hooks return an error, OrComposeDecodeHookFunc returns an error concatenating all error messages.