Bruce/lua-immutable
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For now, switching back to __instances instead of HASH_BUCKETS, because

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it's cleaner and not *much* slower.
This commit is contained in:
Bruce Hill 2018-02-09 15:59:22 -08:00
parent 5c8d0fd69a
commit 1da889f65a
1 changed files with 4 additions and 4 deletions
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8
limmutable.c
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@ -6,7 +6,6 @@
#include "lua.h"
#include "lauxlib.h"
#define HASH_BUCKETS 1
#define MYNAME "immutable"
#define MYTYPE MYNAME
@ -77,7 +76,7 @@ static int Lcreate_instance(lua_State *L)
// Stack [inst]
}
lua_rawgeti(L, 1, HASH_BUCKETS);
lua_getfield(L, 1, "__instances");
// Stack: [inst, buckets]
// Find bucket
@ -184,7 +183,7 @@ static int Lindex(lua_State *L)
lua_pop(L, 1);
// All the slowness is concentrated here
// Stack: [mt, fields, i]
lua_rawgeti(L, -3, HASH_BUCKETS);
lua_getfield(L, -3, "__instances");
// Stack: [mt, fields, i, buckets]
lua_rawgeti(L, -1, *((lua_Integer*)lua_touserdata(L, 1)));
// Stack: [mt, fields, i, buckets, bucket]
@ -243,7 +242,8 @@ static int Lmake_class(lua_State *L)
// CLS.buckets = {}
lua_newtable(L);
// Stack: [CLS, CLS.buckets]
lua_rawseti(L, -2, HASH_BUCKETS);
lua_setfield(L, -2, "__instances");
// Stack: [CLS]
// CLS.__fields = arg1