Function ReleaseHash

engine/script/src/script_hash.cpp:246–285

    }

    void ReleaseHash(lua_State* L, dmhash_t hash)
    {
        int top = lua_gettop(L);

        HContext context = dmScript::GetScriptContext(L);
        dmHashTable64<int>* instances = &context->m_HashInstances;
        int* refp = instances->Get(hash);
        if (!refp)
        {
            assert(top == lua_gettop(L));
            return;
        }

        int ref = *refp;
        // Retrieve the value from the strong table
        lua_rawgeti(L, LUA_REGISTRYINDEX, context->m_ContextTableRef);
        // [-1] context_table
        lua_rawgeti(L, -1, ref);
        // [-2] context_table
        // [-1] value

        if (!lua_isuserdata(L, -1))
        {
            lua_pop(L, 2);
            return;
        }

        lua_remove(L, -2);
        // [-1] value

        // Remove value from strong table
        lua_rawgeti(L, LUA_REGISTRYINDEX, context->m_ContextTableRef);
        // [-2] value
        // [-1] context_table
        luaL_unref(L, -1, ref);
        lua_pop(L, 2);
        // stack balanced

        assert(top == lua_gettop(L));
    }

    dmhash_t CheckHash(lua_State* L, int index)
    {