bump to 0.5.0, resource related nifs changed

There are const/mut changes in the resource nifs to better reflect
the intended meaning in Rust.  ErlNifResourceType and resource pointers become const
because they can be safely referenced from multiple threads (interior mutation
still permitted of course.)

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "erlang_nif-sys"
-version = "0.4.3"
+version = "0.5.0"
 authors = ["Daniel Goertzen <daniel.goertzen@gmail.com>"]
 description = "Create Erlang NIF modules in Rust using the C NIF API."
 documentation = "http://goertzenator.github.io/erlang_nif-sys/erlang_nif_sys/index.html"

gen_api.erl

@@ -160,12 +160,12 @@ api_list(Opts) -> [
     {"ERL_NIF_TERM", "enif_make_tuple_from_array", "arg1: *mut ErlNifEnv, arr: *const ERL_NIF_TERM, cnt: c_uint"},
     {"ERL_NIF_TERM", "enif_make_list_from_array", "arg1: *mut ErlNifEnv, arr: *const ERL_NIF_TERM, cnt: c_uint"},
     {"c_int", "enif_is_empty_list", "arg1: *mut ErlNifEnv, term: ERL_NIF_TERM"},
-    {"*mut ErlNifResourceType", "enif_open_resource_type", "arg1: *mut ErlNifEnv, module_str: *const c_uchar, name_str: *const c_uchar, dtor: Option<extern \"C\" fn (arg1: *mut ErlNifEnv, arg2: *mut c_void)>, flags: ErlNifResourceFlags, tried: *mut ErlNifResourceFlags"},
-    {"*mut c_void", "enif_alloc_resource", "_type: *mut ErlNifResourceType, size: size_t"},
-    {"", "enif_release_resource", "obj: *mut c_void"},
-    {"ERL_NIF_TERM", "enif_make_resource", "arg1: *mut ErlNifEnv, obj: *mut c_void"},
-    {"c_int", "enif_get_resource", "arg1: *mut ErlNifEnv, term: ERL_NIF_TERM, _type: *mut ErlNifResourceType, objp: *mut *mut c_void"},
-    {"size_t", "enif_sizeof_resource", "obj: *mut c_void"},
+    {"*const ErlNifResourceType", "enif_open_resource_type", "arg1: *mut ErlNifEnv, module_str: *const c_uchar, name_str: *const c_uchar, dtor: Option<extern \"C\" fn (arg1: *mut ErlNifEnv, arg2: *mut c_void)>, flags: ErlNifResourceFlags, tried: *mut ErlNifResourceFlags"},
+    {"*mut c_void", "enif_alloc_resource", "_type: *const ErlNifResourceType, size: size_t"},
+    {"", "enif_release_resource", "obj: *const c_void"},
+    {"ERL_NIF_TERM", "enif_make_resource", "arg1: *mut ErlNifEnv, obj: *const c_void"},
+    {"c_int", "enif_get_resource", "arg1: *mut ErlNifEnv, term: ERL_NIF_TERM, _type: *const ErlNifResourceType, objp: *mut *const c_void"},
+    {"size_t", "enif_sizeof_resource", "obj: *const c_void"},
     {"*mut c_uchar", "enif_make_new_binary", "arg1: *mut ErlNifEnv, size: size_t, termp: *mut ERL_NIF_TERM"},
     {"c_int", "enif_is_list", "arg1: *mut ErlNifEnv, term: ERL_NIF_TERM"},
     {"c_int", "enif_is_tuple", "arg1: *mut ErlNifEnv, term: ERL_NIF_TERM"},
@@ -181,8 +181,8 @@ api_list(Opts) -> [
     {"ERL_NIF_TERM", "enif_make_copy", "dst_env: *mut ErlNifEnv, src_term: ERL_NIF_TERM"},
     {"*mut ErlNifPid", "enif_self", "caller_env: *mut ErlNifEnv, pid: *mut ErlNifPid"},
     {"c_int", "enif_get_local_pid", "env: *mut ErlNifEnv, arg1: ERL_NIF_TERM, pid: *mut ErlNifPid"},
-    {"", "enif_keep_resource", "obj: *mut c_void"},
-    {"ERL_NIF_TERM", "enif_make_resource_binary", "arg1: *mut ErlNifEnv, obj: *mut c_void, data: *const c_void, size: size_t"}
+    {"", "enif_keep_resource", "obj: *const c_void"},
+    {"ERL_NIF_TERM", "enif_make_resource_binary", "arg1: *mut ErlNifEnv, obj: *const c_void, data: *const c_void, size: size_t"}
     ] ++
 
     case proplists:get_value(ulongsize, Opts) of

src/lib.rs

@@ -100,7 +100,7 @@ extern "C" fn native_add(env: *mut ErlNifEnv,
         let mut a:c_int = uninitialized();
         let mut b:c_int = uninitialized();
         if argc == 2 &&
-           0 != enif_get_int(env, *args, &mut a) && 
+           0 != enif_get_int(env, *args, &mut a) &&
            0 != enif_get_int(env, *args.offset(1), &mut b) {
             enif_make_int(env, a+b)
          }