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feat(server): Add modules to lua interpreter
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add_library(lua_modules STATIC | ||
cjson/fpconv.c cjson/strbuf.c cjson/lua_cjson.c | ||
cmsgpack/lua_cmsgpack.c | ||
struct/lua_struct.c | ||
bit/bit.c | ||
) | ||
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target_compile_options(lua_modules PRIVATE | ||
-Wno-sign-compare -Wno-misleading-indentation -Wno-implicit-fallthrough -Wno-undefined-inline) | ||
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target_link_libraries(lua_modules TRDP::lua) |
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Since version 5.2 `luaL_register` is deprecated and removed. The new `luaL_newlib` function doesn't make the module globally available upon registration and is ment to be used with the `require` function. | ||
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To provide the modules globally, `luaL_newlib` is followed by a `lua_setglobal` for bit and struct. |
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/* | ||
** Lua BitOp -- a bit operations library for Lua 5.1/5.2. | ||
** http://bitop.luajit.org/ | ||
** | ||
** Copyright (C) 2008-2012 Mike Pall. All rights reserved. | ||
** | ||
** Permission is hereby granted, free of charge, to any person obtaining | ||
** a copy of this software and associated documentation files (the | ||
** "Software"), to deal in the Software without restriction, including | ||
** without limitation the rights to use, copy, modify, merge, publish, | ||
** distribute, sublicense, and/or sell copies of the Software, and to | ||
** permit persons to whom the Software is furnished to do so, subject to | ||
** the following conditions: | ||
** | ||
** The above copyright notice and this permission notice shall be | ||
** included in all copies or substantial portions of the Software. | ||
** | ||
** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | ||
** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | ||
** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. | ||
** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY | ||
** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, | ||
** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE | ||
** SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | ||
** | ||
** [ MIT license: http://www.opensource.org/licenses/mit-license.php ] | ||
*/ | ||
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#define LUA_BITOP_VERSION "1.0.3" | ||
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#define LUA_LIB | ||
#include "lua.h" | ||
#include "lauxlib.h" | ||
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#ifdef _MSC_VER | ||
/* MSVC is stuck in the last century and doesn't have C99's stdint.h. */ | ||
typedef __int32 int32_t; | ||
typedef unsigned __int32 uint32_t; | ||
typedef unsigned __int64 uint64_t; | ||
#else | ||
#include <stdint.h> | ||
#endif | ||
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typedef int32_t SBits; | ||
typedef uint32_t UBits; | ||
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typedef union { | ||
lua_Number n; | ||
#if defined(LUA_NUMBER_DOUBLE) || defined(LUA_FLOAT_DOUBLE) | ||
uint64_t b; | ||
#else | ||
UBits b; | ||
#endif | ||
} BitNum; | ||
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/* Convert argument to bit type. */ | ||
static UBits barg(lua_State *L, int idx) | ||
{ | ||
BitNum bn; | ||
UBits b; | ||
#if LUA_VERSION_NUM < 502 | ||
bn.n = lua_tonumber(L, idx); | ||
#else | ||
bn.n = luaL_checknumber(L, idx); | ||
#endif | ||
#if defined(LUA_NUMBER_DOUBLE) || defined(LUA_FLOAT_DOUBLE) | ||
bn.n += 6755399441055744.0; /* 2^52+2^51 */ | ||
#ifdef SWAPPED_DOUBLE | ||
b = (UBits)(bn.b >> 32); | ||
#else | ||
b = (UBits)bn.b; | ||
#endif | ||
#elif defined(LUA_NUMBER_INT) || defined(LUA_INT_INT) || \ | ||
defined(LUA_NUMBER_LONG) || defined(LUA_INT_LONG) || \ | ||
defined(LUA_NUMBER_LONGLONG) || defined(LUA_INT_LONGLONG) || \ | ||
defined(LUA_NUMBER_LONG_LONG) || defined(LUA_NUMBER_LLONG) | ||
if (sizeof(UBits) == sizeof(lua_Number)) | ||
b = bn.b; | ||
else | ||
b = (UBits)(SBits)bn.n; | ||
#elif defined(LUA_NUMBER_FLOAT) || defined(LUA_FLOAT_FLOAT) | ||
#error "A 'float' lua_Number type is incompatible with this library" | ||
#else | ||
#error "Unknown number type, check LUA_NUMBER_*, LUA_FLOAT_*, LUA_INT_* in luaconf.h" | ||
#endif | ||
#if LUA_VERSION_NUM < 502 | ||
if (b == 0 && !lua_isnumber(L, idx)) { | ||
luaL_typerror(L, idx, "number"); | ||
} | ||
#endif | ||
return b; | ||
} | ||
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/* Return bit type. */ | ||
#if LUA_VERSION_NUM < 503 | ||
#define BRET(b) lua_pushnumber(L, (lua_Number)(SBits)(b)); return 1; | ||
#else | ||
#define BRET(b) lua_pushinteger(L, (lua_Integer)(SBits)(b)); return 1; | ||
#endif | ||
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static int bit_tobit(lua_State *L) { BRET(barg(L, 1)) } | ||
static int bit_bnot(lua_State *L) { BRET(~barg(L, 1)) } | ||
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#define BIT_OP(func, opr) \ | ||
static int func(lua_State *L) { int i; UBits b = barg(L, 1); \ | ||
for (i = lua_gettop(L); i > 1; i--) b opr barg(L, i); BRET(b) } | ||
BIT_OP(bit_band, &=) | ||
BIT_OP(bit_bor, |=) | ||
BIT_OP(bit_bxor, ^=) | ||
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#define bshl(b, n) (b << n) | ||
#define bshr(b, n) (b >> n) | ||
#define bsar(b, n) ((SBits)b >> n) | ||
#define brol(b, n) ((b << n) | (b >> (32-n))) | ||
#define bror(b, n) ((b << (32-n)) | (b >> n)) | ||
#define BIT_SH(func, fn) \ | ||
static int func(lua_State *L) { \ | ||
UBits b = barg(L, 1); UBits n = barg(L, 2) & 31; BRET(fn(b, n)) } | ||
BIT_SH(bit_lshift, bshl) | ||
BIT_SH(bit_rshift, bshr) | ||
BIT_SH(bit_arshift, bsar) | ||
BIT_SH(bit_rol, brol) | ||
BIT_SH(bit_ror, bror) | ||
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static int bit_bswap(lua_State *L) | ||
{ | ||
UBits b = barg(L, 1); | ||
b = (b >> 24) | ((b >> 8) & 0xff00) | ((b & 0xff00) << 8) | (b << 24); | ||
BRET(b) | ||
} | ||
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static int bit_tohex(lua_State *L) | ||
{ | ||
UBits b = barg(L, 1); | ||
SBits n = lua_isnone(L, 2) ? 8 : (SBits)barg(L, 2); | ||
const char *hexdigits = "0123456789abcdef"; | ||
char buf[8]; | ||
int i; | ||
if (n < 0) { n = -n; hexdigits = "0123456789ABCDEF"; } | ||
if (n > 8) n = 8; | ||
for (i = (int)n; --i >= 0; ) { buf[i] = hexdigits[b & 15]; b >>= 4; } | ||
lua_pushlstring(L, buf, (size_t)n); | ||
return 1; | ||
} | ||
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static const struct luaL_Reg bit_funcs[] = { | ||
{ "tobit", bit_tobit }, | ||
{ "bnot", bit_bnot }, | ||
{ "band", bit_band }, | ||
{ "bor", bit_bor }, | ||
{ "bxor", bit_bxor }, | ||
{ "lshift", bit_lshift }, | ||
{ "rshift", bit_rshift }, | ||
{ "arshift", bit_arshift }, | ||
{ "rol", bit_rol }, | ||
{ "ror", bit_ror }, | ||
{ "bswap", bit_bswap }, | ||
{ "tohex", bit_tohex }, | ||
{ NULL, NULL } | ||
}; | ||
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/* Signed right-shifts are implementation-defined per C89/C99. | ||
** But the de facto standard are arithmetic right-shifts on two's | ||
** complement CPUs. This behaviour is required here, so test for it. | ||
*/ | ||
#define BAD_SAR (bsar(-8, 2) != (SBits)-2) | ||
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LUALIB_API int luaopen_bit(lua_State *L) | ||
{ | ||
UBits b; | ||
#if LUA_VERSION_NUM < 503 | ||
lua_pushnumber(L, (lua_Number)1437217655L); | ||
#else | ||
lua_pushinteger(L, (lua_Integer)1437217655L); | ||
#endif | ||
b = barg(L, -1); | ||
if (b != (UBits)1437217655L || BAD_SAR) { /* Perform a simple self-test. */ | ||
const char *msg = "compiled with incompatible luaconf.h"; | ||
#if defined(LUA_NUMBER_DOUBLE) || defined(LUA_FLOAT_DOUBLE) | ||
#ifdef _WIN32 | ||
if (b == (UBits)1610612736L) | ||
msg = "use D3DCREATE_FPU_PRESERVE with DirectX"; | ||
#endif | ||
if (b == (UBits)1127743488L) | ||
msg = "not compiled with SWAPPED_DOUBLE"; | ||
#endif | ||
if (BAD_SAR) | ||
msg = "arithmetic right-shift broken"; | ||
luaL_error(L, "bit library self-test failed (%s)", msg); | ||
} | ||
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luaL_newlib(L, bit_funcs); | ||
lua_setglobal(L, "bit"); | ||
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return 1; | ||
} |
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