How to create a golang struct with given name of string - go

Question

I am using protobuf to generate a lot of struct, and I want to use gorm.io to Db.AutoMigrate all the struct in the generate package into the database. But the function func (*gorm.DB).AutoMigrate(dst ...interface{}) error can only accept variadic struct instance as its parameters. The following code can retrieved all the name of structs is string format.
package main
import (
"fmt"
"go/ast"
"go/parser"
"go/token"
)
func main() {
// src is the input for which we want to inspect the AST.
src := `
package service
type Screen struct {
Width float64
Height float64
}
type Memory struct {
Unit float64
}
`
// Create the AST by parsing src.
fset := token.NewFileSet() // positions are relative to fset
f, err := parser.ParseFile(fset, "src.go", src, 0)
if err != nil {
panic(err)
}
for _, node := range f.Decls {
switch node.(type) {
case *ast.GenDecl:
genDecl := node.(*ast.GenDecl)
for _, spec := range genDecl.Specs {
switch spec.(type) {
case *ast.TypeSpec:
typeSpec := spec.(*ast.TypeSpec)
fmt.Printf("Struct: name=%s\n", typeSpec.Name.Name)
}
}
}
}
}
My Question is:
This code can got all the name of structs , but the gorm.io need initialize the struct DB.AutoMigrate(&User{}). How can I do create a empty struct that specified by the string of the name at the runtime. eg. the "Screen" ===> &Screen{}.