Please answer these questions before submitting your issue. Thanks!

How I can list all structs and functions by package name, or create a struct instance by struct name,such as
package test
type User struct {
Name string
}
func getStructNameByPackageName(packageName string) []string{
...
}
func createStructInstance(structName string) interface{}{
...
}

1. call function getStructNameByPackageName("test") we will get result: ['User']
2. call function createStructInstance("test.User") we will get result: a User instance
   I scan many pages on the web,but most people say cann't do these. If can ,please tell me, thank you very much

What version of Go are you using (go version)?

1.7.3

Does this issue reproduce with the latest release?

What operating system and processor architecture are you using (go env)?

What did you do?

If possible, provide a recipe for reproducing the error.
A complete runnable program is good.
A link on play.golang.org is best.

What did you expect to see?

What did you see instead?