diff options
Diffstat (limited to 'src/enum.c')
| -rw-r--r-- | src/enum.c | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/src/enum.c b/src/enum.c index 3def9e860..b95956715 100644 --- a/src/enum.c +++ b/src/enum.c @@ -4,11 +4,27 @@ ** See Copyright Notice in mruby.h */ -#include "mruby.h" +#include <mruby.h> +#include <mruby/proc.h> + +/* internal method `__update_hash(oldhash, index, itemhash)` */ +static mrb_value +enum_update_hash(mrb_state *mrb, mrb_value self) +{ + mrb_int hash; + mrb_int index; + mrb_int hv; + + mrb_get_args(mrb, "iii", &hash, &index, &hv); + hash ^= ((uint32_t)hv << (index % 16)); + + return mrb_int_value(mrb, hash); +} void mrb_init_enumerable(mrb_state *mrb) { - mrb_define_module(mrb, "Enumerable"); /* 15.3.2 */ + struct RClass *enumerable; + enumerable = mrb_define_module(mrb, "Enumerable"); /* 15.3.2 */ + mrb_define_module_function(mrb, enumerable, "__update_hash", enum_update_hash, MRB_ARGS_REQ(3)); } - |