How to use datatype defined in ATS in C

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1

Suppose I have :

datatype env =
| empty_env of ()
| extend_env of (string,int,env)

What is its equivalent in C . I tried to follow the example in “Interaction
with C” , but cannot seem to make it work.

In C suppose I have two function : make_empty_env , and make_extend_env ,
what should be there signatures?

  1. return_type??? make_empty_env () { … }

  2. return_type??? make_extend_env (char * s , int , ???) {…}

Thanks

2

extern void *make_empty_env () ;
extern void *make_extend_env (char arg0, int arg1, void arg2) ;On Friday, March 21, 2014 7:21:09 AM UTC-4, chotu s wrote:

Suppose I have :

datatype env =
| empty_env of ()
| extend_env of (string,int,env)

What is its equivalent in C . I tried to follow the example in
“Interaction with C” , but cannot seem to make it work.

In C suppose I have two function : make_empty_env , and make_extend_env ,
what should be there signatures?

  1. return_type??? make_empty_env () { … }

  2. return_type??? make_extend_env (char * s , int , ???) {…}

Thanks