ltests.cpp

这个是symbian下的一个蛮庞大的3D游戏源代码！对于学习3D开发的人有很大的帮助！

static int doonnewstack (lua_State *L) {
  lua_State *L1 = lua_newthread(L);
  size_t l;
  const char *s = luaL_checklstring(L, 1, &l);
  int status = luaL_loadbuffer(L1, s, l, s);
  if (status == 0)
    status = lua_pcall(L1, 0, 0, 0);
  lua_pushintegral(L, status);
  return 1;
}


static int s2d (lua_State *L) {
  lua_pushnumber(L, *cast(const double *, luaL_checkstring(L, 1)));
  return 1;
}

static int d2s (lua_State *L) {
  double d = luaL_checknumber(L, 1);
  lua_pushlstring(L, cast(char *, &d), sizeof(d));
  return 1;
}


static int newstate (lua_State *L) {
  lua_State *L1 = lua_open();
  if (L1) {
    lua_userstateopen(L1);  /* init lock */
    lua_pushintegral(L, (unsigned long)L1);
  }
  else
    lua_pushnil(L);
  return 1;
}


static int loadlib (lua_State *L) {
  static const luaL_reg libs[] = {
    {"mathlibopen", luaopen_math},
    {"strlibopen", luaopen_string},
    {"iolibopen", luaopen_io},
    {"tablibopen", luaopen_table},
    {"dblibopen", luaopen_debug},
    {"baselibopen", luaopen_base},
    {0, 0}
  };
  lua_State *L1 = cast(lua_State *,
                       cast(unsigned long, luaL_checknumber(L, 1)));
  lua_pushvalue(L1, LUA_GLOBALSINDEX);
  luaL_openlib(L1, 0, libs, 0);
  return 0;
}

static int closestate (lua_State *L) {
  lua_State *L1 = cast(lua_State *, cast(unsigned long, luaL_checknumber(L, 1)));
  lua_close(L1);
  lua_unlock(L);  /* close cannot unlock that */
  return 0;
}

static int doremote (lua_State *L) {
  lua_State *L1 = cast(lua_State *,cast(unsigned long,luaL_checknumber(L, 1)));
  size_t lcode;
  const char *code = luaL_checklstring(L, 2, &lcode);
  int status;
  lua_settop(L1, 0);
  status = luaL_loadbuffer(L1, code, lcode, code);
  if (status == 0)
    status = lua_pcall(L1, 0, LUA_MULTRET, 0);
  if (status != 0) {
    lua_pushnil(L);
    lua_pushintegral(L, status);
    lua_pushstring(L, lua_tostring(L1, -1));
    return 3;
  }
  else {
    int i = 0;
    while (!lua_isnone(L1, ++i))
      lua_pushstring(L, lua_tostring(L1, i));
    lua_pop(L1, i-1);
    return i-1;
  }
}


static int log2_aux (lua_State *L) {
  lua_pushintegral(L, luaO_log2(luaL_checkint(L, 1)));
  return 1;
}

static int int2fb_aux (lua_State *L) {
  int b = luaO_int2fb(luaL_checkint(L, 1));
  lua_pushintegral(L, b);
  lua_pushintegral(L, fb2int(b));
  return 2;
}


static int test_do (lua_State *L) {
  const char *p = luaL_checkstring(L, 1);
  if (*p == '@')
    lua_dofile(L, p+1);
  else
    lua_dostring(L, p);
  return lua_gettop(L);
}



/*
** {======================================================
** function to test the API with C. It interprets a kind of assembler
** language with calls to the API, so the test can be driven by Lua code
** =======================================================
*/

static const char *const delimits = " \t\n,;";

static void skip (const char **pc) {
  while (**pc != '\0' && strchr(delimits, **pc)) (*pc)++;
}

static int getnum_aux (lua_State *L, const char **pc) {
  int res = 0;
  int sig = 1;
  skip(pc);
  if (**pc == '.') {
    res = cast(int, lua_tonumber(L, -1));
    lua_pop(L, 1);
    (*pc)++;
    return res;
  }
  else if (**pc == '-') {
    sig = -1;
    (*pc)++;
  }
  while (isdigit(cast(int, **pc))) res = res*10 + (*(*pc)++) - '0';
  return sig*res;
}
  
static const char *getname_aux (char *buff, const char **pc) {
  int i = 0;
  skip(pc);
  while (**pc != '\0' && !strchr(delimits, **pc))
    buff[i++] = *(*pc)++;
  buff[i] = '\0';
  return buff;
}


#define EQ(s1)	(strcmp(s1, inst) == 0)

#define getnum	(getnum_aux(L, &pc))
#define getname	(getname_aux(buff, &pc))


static int testC (lua_State *L) {
  char buff[30];
  const char *pc = luaL_checkstring(L, 1);
  for (;;) {
    const char *inst = getname;
    if EQ("") return 0;
    else if EQ("isnumber") {
      lua_pushintegral(L, lua_isnumber(L, getnum));
    }
    else if EQ("isstring") {
      lua_pushintegral(L, lua_isstring(L, getnum));
    }
    else if EQ("istable") {
      lua_pushintegral(L, lua_istable(L, getnum));
    }
    else if EQ("iscfunction") {
      lua_pushintegral(L, lua_iscfunction(L, getnum));
    }
    else if EQ("isfunction") {
      lua_pushintegral(L, lua_isfunction(L, getnum));
    }
    else if EQ("isuserdata") {
      lua_pushintegral(L, lua_isuserdata(L, getnum));
    }
    else if EQ("isudataval") {
      lua_pushintegral(L, lua_islightuserdata(L, getnum));
    }
    else if EQ("isnil") {
      lua_pushintegral(L, lua_isnil(L, getnum));
    }
    else if EQ("isnull") {
      lua_pushintegral(L, lua_isnone(L, getnum));
    }
    else if EQ("tonumber") {
      lua_pushnumber(L, lua_tonumber(L, getnum));
    }
    else if EQ("tostring") {
      const char *s = lua_tostring(L, getnum);
      lua_pushstring(L, s);
    }
    else if EQ("strlen") {
      lua_pushintegral(L, lua_strlen(L, getnum));
    }
    else if EQ("tocfunction") {
      lua_pushcfunction(L, lua_tocfunction(L, getnum));
    }
    else if EQ("return") {
      return getnum;
    }
    else if EQ("gettop") {
      lua_pushintegral(L, lua_gettop(L));
    }
    else if EQ("settop") {
      lua_settop(L, getnum);
    }
    else if EQ("pop") {
      lua_pop(L, getnum);
    }
    else if EQ("pushnum") {
      lua_pushintegral(L, getnum);
    }
    else if EQ("pushnil") {
      lua_pushnil(L);
    }
    else if EQ("pushbool") {
      lua_pushboolean(L, getnum);
    }
    else if EQ("tobool") {
      lua_pushintegral(L, lua_toboolean(L, getnum));
    }
    else if EQ("pushvalue") {
      lua_pushvalue(L, getnum);
    }
    else if EQ("pushcclosure") {
      lua_pushcclosure(L, testC, getnum);
    }
    else if EQ("pushupvalues") {
      lua_pushupvalues(L);
    }
    else if EQ("remove") {
      lua_remove(L, getnum);
    }
    else if EQ("insert") {
      lua_insert(L, getnum);
    }
    else if EQ("replace") {
      lua_replace(L, getnum);
    }
    else if EQ("gettable") {
      lua_gettable(L, getnum);
    }
    else if EQ("settable") {
      lua_settable(L, getnum);
    }
    else if EQ("next") {
      lua_next(L, -2);
    }
    else if EQ("concat") {
      lua_concat(L, getnum);
    }
    else if EQ("lessthan") {
      int a = getnum;
      lua_pushboolean(L, lua_lessthan(L, a, getnum));
    }
    else if EQ("equal") {
      int a = getnum;
      lua_pushboolean(L, lua_equal(L, a, getnum));
    }
    else if EQ("rawcall") {
      int narg = getnum;
      int nres = getnum;
      lua_call(L, narg, nres);
    }
    else if EQ("call") {
      int narg = getnum;
      int nres = getnum;
      lua_pcall(L, narg, nres, 0);
    }
    else if EQ("loadstring") {
      size_t sl;
      const char *s = luaL_checklstring(L, getnum, &sl);
      luaL_loadbuffer(L, s, sl, s);
    }
    else if EQ("loadfile") {
      luaL_loadfile(L, luaL_checkstring(L, getnum));
    }
    else if EQ("setmetatable") {
      lua_setmetatable(L, getnum);
    }
    else if EQ("getmetatable") {
      if (lua_getmetatable(L, getnum) == 0)
        lua_pushnil(L);
    }
    else if EQ("type") {
      lua_pushstring(L, lua_typename(L, lua_type(L, getnum)));
    }
    else if EQ("getn") {
      int i = getnum;
      lua_pushintegral(L, luaL_getn(L, i));
    }
    else if EQ("setn") {
      int i = getnum;
      int n = cast(int, lua_tonumber(L, -1));
      luaL_setn(L, i, n);
      lua_pop(L, 1);
    }
    else luaL_error(L, "unknown instruction %s", buff);
  }
  return 0;
}

/* }====================================================== */


/*
** {======================================================
** tests for yield inside hooks
** =======================================================
*/

static void yieldf (lua_State *L, lua_Debug *ar) {
  lua_yield(L, 0);
}

static int setyhook (lua_State *L) {
  if (lua_isnoneornil(L, 1))
    lua_sethook(L, 0, 0, 0);  /* turn off hooks */
  else {
    const char *smask = luaL_checkstring(L, 1);
    int count = luaL_optint(L, 2, 0);
    int mask = 0;
    if (strchr(smask, 'l')) mask |= LUA_MASKLINE;
    if (count > 0) mask |= LUA_MASKCOUNT;
    lua_sethook(L, yieldf, mask, count);
  }
  return 0;
}


static int coresume (lua_State *L) {
  int status;
  lua_State *co = lua_tothread(L, 1);
  luaL_argcheck(L, co, 1, "coroutine expected");
  status = lua_resume(co, 0);
  if (status != 0) {
    lua_pushboolean(L, 0);
    lua_insert(L, -2);
    return 2;  /* return false + error message */
  }
  else {
    lua_pushboolean(L, 1);
    return 1;
  }
}

/* }====================================================== */



static const struct luaL_reg tests_funcs[] = {
  {"hash", hash_query},
  {"limits", get_limits},
  {"listcode", listcode},
  {"listk", listk},
  {"listlocals", listlocals},
  {"loadlib", loadlib},
  {"stacklevel", stacklevel},
  {"querystr", string_query},
  {"querytab", table_query},
  {"doit", test_do},
  {"testC", testC},
  {"ref", tref},
  {"getref", getref},
  {"unref", unref},
  {"d2s", d2s},
  {"s2d", s2d},
  {"metatable", metatable},
  {"upvalue", upvalue},
  {"newuserdata", newuserdata},
  {"pushuserdata", pushuserdata},
  {"udataval", udataval},
  {"doonnewstack", doonnewstack},
  {"newstate", newstate},
  {"closestate", closestate},
  {"doremote", doremote},
  {"log2", log2_aux},
  {"int2fb", int2fb_aux},
  {"totalmem", mem_query},
  {"resume", coresume},
  {"setyhook", setyhook},
  {0, 0}
};


static void fim (void) {
  if (!islocked)
    lua_close(lua_state);
  lua_assert(memdebug_numblocks == 0);
  lua_assert(memdebug_total == 0);
}


static int l_panic (lua_State *L) {
  UNUSED(L);
  fprintf(stderr, "unable to recover; exiting\n");
  return 0;
}


int luaB_opentests (lua_State *L) {
  lua_atpanic(L, l_panic);
  lua_userstateopen(L);  /* init lock */
  lua_state = L;  /* keep first state to be opened */
  luaL_openlib(L, "T", tests_funcs, 0);
  atexit(fim);
  return 0;
}


#undef main
int main (int argc, char *argv[]) {
  char *limit = getenv("MEMLIMIT");
  if (limit)
    memdebug_memlimit = strtoul(limit, 0, 10);
  l_main(argc, argv);
  return 0;
}

#endif