diff options
Diffstat (limited to 'struct.c')
| -rw-r--r-- | struct.c | 17 |
1 files changed, 17 insertions, 0 deletions
@@ -111,6 +111,7 @@ void struct_init(void) reg_fun(intern(lit("super"), user_package), func_n1(super)); reg_fun(intern(lit("make-struct"), user_package), func_n2v(make_struct)); reg_fun(intern(lit("copy-struct"), user_package), func_n1(copy_struct)); + reg_fun(intern(lit("replace-struct"), user_package), func_n2(replace_struct)); reg_fun(intern(lit("clear-struct"), user_package), func_n2o(clear_struct, 1)); reg_fun(intern(lit("slot"), user_package), func_n2(slot)); reg_fun(intern(lit("slotset"), user_package), func_n3(slotset)); @@ -408,6 +409,22 @@ val clear_struct(val strct, val value) return strct; } +val replace_struct(val target, val source) +{ + const val self = lit("replace-struct"); + struct struct_inst *tsi = struct_handle(target, self); + struct struct_inst *ssi = struct_handle(source, self); + struct struct_type *sst = coerce(struct struct_type *, ssi->type->co.handle); + cnum nslots = sst->nslots; + size_t size = offsetof(struct struct_inst, slot) + sizeof (val) * nslots; + struct struct_inst *ssi_copy = coerce(struct struct_inst *, chk_malloc(size)); + memcpy(ssi_copy, ssi, size); + free(tsi); + target->co.handle = coerce(mem_t *, ssi_copy); + target->co.cls = source->co.cls; + return target; +} + static int cache_set_lookup(slot_cache_entry_t *set, cnum id) { if (set[0].id == id) |