How to decode with Struct pointer

[AlexandreRzc]

Hi
I would like to decode this kind of structure with pointers and nested structure with pointers
and keeping the field in input as a flattened map and using squash
But got an error :

• Family: unsupported type for squash: ptr

I would like to achieve this results

• If LastName is filled with value "test" : Family is initialiazed and Lastname equals "test" and json ouput is
  {"family":{"lastname":"test"},"city":"San Francisco","firstname":"Mitchell"}

• If LastName is nil : Family is nil and json output is
  {"city":"San Francisco","firstname":"Mitchell"}

Thanks

package main

import (
	"encoding/json"
	"fmt"
	"github.com/mitchellh/mapstructure"
)

func main() {
	type Family struct {
		LastName *string \`json:"lastname,omitempty"\`
	}
	type Location struct {
		City string \`json:"city,omitempty"\`
	}
	type Person struct {
		*Family \`json:"family,omitempty" mapstructure:",squash"\`
		Location  \`mapstructure:",squash"\`
		FirstName string \`json:"firstname,omitempty"\`
	}

	input := map[string]interface{}{
		"FirstName": "Mitchell",
		"City":      "San Francisco",
	}

	var result Person
	err := mapstructure.Decode(input, &result)
	if err != nil {
		panic(err)
	}
	res, err := json.Marshal(result)
	fmt.Println(string(res)) 

}

[mitchellh]

This isn't currently supported it appears but I'd be happy to add this if there is a PR!