luaconf.h 23 KB

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  1. /*
  2. ** $Id: luaconf.h,v 1.82.1.7 2008/02/11 16:25:08 roberto Exp $
  3. ** Configuration file for Lua
  4. ** See Copyright Notice in lua.h
  5. */
  6. #ifndef lconfig_h
  7. #define lconfig_h
  8. #if 0
  9. #include <limits.h>
  10. #include <stddef.h>
  11. #endif
  12. #include "grub_lua.h"
  13. /*
  14. ** ==================================================================
  15. ** Search for "@@" to find all configurable definitions.
  16. ** ===================================================================
  17. */
  18. /*
  19. @@ LUA_ANSI controls the use of non-ansi features.
  20. ** CHANGE it (define it) if you want Lua to avoid the use of any
  21. ** non-ansi feature or library.
  22. */
  23. #if defined(__STRICT_ANSI__)
  24. #define LUA_ANSI
  25. #endif
  26. #if !defined(LUA_ANSI) && defined(_WIN32)
  27. #define LUA_WIN
  28. #endif
  29. #if defined(LUA_USE_LINUX)
  30. #define LUA_USE_POSIX
  31. #define LUA_USE_DLOPEN /* needs an extra library: -ldl */
  32. #define LUA_USE_READLINE /* needs some extra libraries */
  33. #endif
  34. #if defined(LUA_USE_MACOSX)
  35. #define LUA_USE_POSIX
  36. #define LUA_DL_DYLD /* does not need extra library */
  37. #endif
  38. /*
  39. @@ LUA_USE_POSIX includes all functionallity listed as X/Open System
  40. @* Interfaces Extension (XSI).
  41. ** CHANGE it (define it) if your system is XSI compatible.
  42. */
  43. #if 0
  44. #if defined(LUA_USE_POSIX)
  45. #define LUA_USE_MKSTEMP
  46. #define LUA_USE_ISATTY
  47. #define LUA_USE_POPEN
  48. #define LUA_USE_ULONGJMP
  49. #endif
  50. #endif
  51. /*
  52. @@ LUA_PATH and LUA_CPATH are the names of the environment variables that
  53. @* Lua check to set its paths.
  54. @@ LUA_INIT is the name of the environment variable that Lua
  55. @* checks for initialization code.
  56. ** CHANGE them if you want different names.
  57. */
  58. #define LUA_PATH "LUA_PATH"
  59. #define LUA_CPATH "LUA_CPATH"
  60. #define LUA_INIT "LUA_INIT"
  61. /*
  62. @@ LUA_PATH_DEFAULT is the default path that Lua uses to look for
  63. @* Lua libraries.
  64. @@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for
  65. @* C libraries.
  66. ** CHANGE them if your machine has a non-conventional directory
  67. ** hierarchy or if you want to install your libraries in
  68. ** non-conventional directories.
  69. */
  70. #if defined(_WIN32)
  71. /*
  72. ** In Windows, any exclamation mark ('!') in the path is replaced by the
  73. ** path of the directory of the executable file of the current process.
  74. */
  75. #define LUA_LDIR "!\\lua\\"
  76. #define LUA_CDIR "!\\"
  77. #define LUA_PATH_DEFAULT \
  78. ".\\?.lua;" LUA_LDIR"?.lua;" LUA_LDIR"?\\init.lua;" \
  79. LUA_CDIR"?.lua;" LUA_CDIR"?\\init.lua"
  80. #define LUA_CPATH_DEFAULT \
  81. ".\\?.dll;" ".\\?51.dll;" LUA_CDIR"?.dll;" LUA_CDIR"?51.dll;" LUA_CDIR"clibs\\?.dll;" LUA_CDIR"clibs\\?51.dll;" LUA_CDIR"loadall.dll;" LUA_CDIR"clibs\\loadall.dll"
  82. #else
  83. #define LUA_ROOT "/usr/local/"
  84. #define LUA_LDIR LUA_ROOT "share/lua/5.1/"
  85. #define LUA_CDIR LUA_ROOT "lib/lua/5.1/"
  86. #define LUA_PATH_DEFAULT \
  87. "./?.lua;" LUA_LDIR"?.lua;" LUA_LDIR"?/init.lua;" \
  88. LUA_CDIR"?.lua;" LUA_CDIR"?/init.lua"
  89. #define LUA_CPATH_DEFAULT \
  90. "./?.so;" "./lib?51.so;" LUA_CDIR"?.so;" LUA_CDIR"lib?51.so;" LUA_CDIR"loadall.so"
  91. #endif
  92. /*
  93. @@ LUA_DIRSEP is the directory separator (for submodules).
  94. ** CHANGE it if your machine does not use "/" as the directory separator
  95. ** and is not Windows. (On Windows Lua automatically uses "\".)
  96. */
  97. #if defined(_WIN32)
  98. #define LUA_DIRSEP "\\"
  99. #else
  100. #define LUA_DIRSEP "/"
  101. #endif
  102. /*
  103. @@ LUA_PATHSEP is the character that separates templates in a path.
  104. @@ LUA_PATH_MARK is the string that marks the substitution points in a
  105. @* template.
  106. @@ LUA_EXECDIR in a Windows path is replaced by the executable's
  107. @* directory.
  108. @@ LUA_IGMARK is a mark to ignore all before it when bulding the
  109. @* luaopen_ function name.
  110. ** CHANGE them if for some reason your system cannot use those
  111. ** characters. (E.g., if one of those characters is a common character
  112. ** in file/directory names.) Probably you do not need to change them.
  113. */
  114. #define LUA_PATHSEP ";"
  115. #define LUA_PATH_MARK "?"
  116. #define LUA_EXECDIR "!"
  117. #define LUA_IGMARK "-"
  118. /*
  119. @@ LUA_INTEGER is the integral type used by lua_pushinteger/lua_tointeger.
  120. ** CHANGE that if ptrdiff_t is not adequate on your machine. (On most
  121. ** machines, ptrdiff_t gives a good choice between int or long.)
  122. */
  123. #define LUA_INTEGER ptrdiff_t
  124. /*
  125. @@ LUA_API is a mark for all core API functions.
  126. @@ LUALIB_API is a mark for all standard library functions.
  127. ** CHANGE them if you need to define those functions in some special way.
  128. ** For instance, if you want to create one Windows DLL with the core and
  129. ** the libraries, you may want to use the following definition (define
  130. ** LUA_BUILD_AS_DLL to get it).
  131. */
  132. #if defined(LUA_BUILD_AS_DLL)
  133. #if defined(LUA_CORE) || defined(LUA_LIB)
  134. #define LUA_API __declspec(dllexport)
  135. #else
  136. #define LUA_API __declspec(dllimport)
  137. #endif
  138. #else
  139. #define LUA_API extern
  140. #endif
  141. /* more often than not the libs go together with the core */
  142. #define LUALIB_API LUA_API
  143. /*
  144. @@ LUAI_FUNC is a mark for all extern functions that are not to be
  145. @* exported to outside modules.
  146. @@ LUAI_DATA is a mark for all extern (const) variables that are not to
  147. @* be exported to outside modules.
  148. ** CHANGE them if you need to mark them in some special way. Elf/gcc
  149. ** (versions 3.2 and later) mark them as "hidden" to optimize access
  150. ** when Lua is compiled as a shared library.
  151. */
  152. #if defined(luaall_c)
  153. #define LUAI_FUNC static
  154. #define LUAI_DATA /* empty */
  155. #elif defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \
  156. defined(__ELF__)
  157. //#define LUAI_FUNC __attribute__((visibility("hidden"))) extern
  158. #define LUAI_FUNC extern
  159. #define LUAI_DATA LUAI_FUNC
  160. #else
  161. #define LUAI_FUNC extern
  162. #define LUAI_DATA extern
  163. #endif
  164. /*
  165. @@ LUA_QL describes how error messages quote program elements.
  166. ** CHANGE it if you want a different appearance.
  167. */
  168. #define LUA_QL(x) "'" x "'"
  169. #define LUA_QS LUA_QL("%s")
  170. /*
  171. @@ LUA_IDSIZE gives the maximum size for the description of the source
  172. @* of a function in debug information.
  173. ** CHANGE it if you want a different size.
  174. */
  175. #define LUA_IDSIZE 60
  176. /*
  177. ** {==================================================================
  178. ** Stand-alone configuration
  179. ** ===================================================================
  180. */
  181. #if defined(lua_c) || defined(luaall_c)
  182. /*
  183. @@ lua_stdin_is_tty detects whether the standard input is a 'tty' (that
  184. @* is, whether we're running lua interactively).
  185. ** CHANGE it if you have a better definition for non-POSIX/non-Windows
  186. ** systems.
  187. */
  188. #if defined(LUA_USE_ISATTY)
  189. #include <unistd.h>
  190. #define lua_stdin_is_tty() isatty(0)
  191. #elif defined(LUA_WIN)
  192. #include <io.h>
  193. #include <stdio.h>
  194. #define lua_stdin_is_tty() _isatty(_fileno(stdin))
  195. #else
  196. #define lua_stdin_is_tty() 1 /* assume stdin is a tty */
  197. #endif
  198. /*
  199. @@ LUA_PROMPT is the default prompt used by stand-alone Lua.
  200. @@ LUA_PROMPT2 is the default continuation prompt used by stand-alone Lua.
  201. ** CHANGE them if you want different prompts. (You can also change the
  202. ** prompts dynamically, assigning to globals _PROMPT/_PROMPT2.)
  203. */
  204. #define LUA_PROMPT "> "
  205. #define LUA_PROMPT2 ">> "
  206. /*
  207. @@ LUA_PROGNAME is the default name for the stand-alone Lua program.
  208. ** CHANGE it if your stand-alone interpreter has a different name and
  209. ** your system is not able to detect that name automatically.
  210. */
  211. #define LUA_PROGNAME "lua"
  212. /*
  213. @@ LUA_MAXINPUT is the maximum length for an input line in the
  214. @* stand-alone interpreter.
  215. ** CHANGE it if you need longer lines.
  216. */
  217. #define LUA_MAXINPUT 512
  218. /*
  219. @@ lua_readline defines how to show a prompt and then read a line from
  220. @* the standard input.
  221. @@ lua_saveline defines how to "save" a read line in a "history".
  222. @@ lua_freeline defines how to free a line read by lua_readline.
  223. ** CHANGE them if you want to improve this functionality (e.g., by using
  224. ** GNU readline and history facilities).
  225. */
  226. #if defined(LUA_USE_READLINE)
  227. #include <stdio.h>
  228. #include <readline/readline.h>
  229. #include <readline/history.h>
  230. #define lua_readline(L,b,p) ((void)L, ((b)=readline(p)) != NULL)
  231. #define lua_saveline(L,idx) \
  232. if (lua_strlen(L,idx) > 0) /* non-empty line? */ \
  233. add_history(lua_tostring(L, idx)); /* add it to history */
  234. #define lua_freeline(L,b) ((void)L, free(b))
  235. #else
  236. #define lua_readline(L,b,p) \
  237. ((void)L, fputs(p, stdout), fflush(stdout), /* show prompt */ \
  238. fgets(b, LUA_MAXINPUT, stdin) != NULL) /* get line */
  239. #define lua_saveline(L,idx) { (void)L; (void)idx; }
  240. #define lua_freeline(L,b) { (void)L; (void)b; }
  241. #endif
  242. #endif
  243. /* }================================================================== */
  244. /*
  245. @@ LUAI_GCPAUSE defines the default pause between garbage-collector cycles
  246. @* as a percentage.
  247. ** CHANGE it if you want the GC to run faster or slower (higher values
  248. ** mean larger pauses which mean slower collection.) You can also change
  249. ** this value dynamically.
  250. */
  251. #define LUAI_GCPAUSE 200 /* 200% (wait memory to double before next GC) */
  252. /*
  253. @@ LUAI_GCMUL defines the default speed of garbage collection relative to
  254. @* memory allocation as a percentage.
  255. ** CHANGE it if you want to change the granularity of the garbage
  256. ** collection. (Higher values mean coarser collections. 0 represents
  257. ** infinity, where each step performs a full collection.) You can also
  258. ** change this value dynamically.
  259. */
  260. #define LUAI_GCMUL 200 /* GC runs 'twice the speed' of memory allocation */
  261. /*
  262. @@ LUA_COMPAT_GETN controls compatibility with old getn behavior.
  263. ** CHANGE it (define it) if you want exact compatibility with the
  264. ** behavior of setn/getn in Lua 5.0.
  265. */
  266. #undef LUA_COMPAT_GETN
  267. /*
  268. @@ LUA_COMPAT_LOADLIB controls compatibility about global loadlib.
  269. ** CHANGE it to undefined as soon as you do not need a global 'loadlib'
  270. ** function (the function is still available as 'package.loadlib').
  271. */
  272. #undef LUA_COMPAT_LOADLIB
  273. /*
  274. @@ LUA_COMPAT_VARARG controls compatibility with old vararg feature.
  275. ** CHANGE it to undefined as soon as your programs use only '...' to
  276. ** access vararg parameters (instead of the old 'arg' table).
  277. */
  278. #define LUA_COMPAT_VARARG
  279. /*
  280. @@ LUA_COMPAT_MOD controls compatibility with old math.mod function.
  281. ** CHANGE it to undefined as soon as your programs use 'math.fmod' or
  282. ** the new '%' operator instead of 'math.mod'.
  283. */
  284. #define LUA_COMPAT_MOD
  285. /*
  286. @@ LUA_COMPAT_LSTR controls compatibility with old long string nesting
  287. @* facility.
  288. ** CHANGE it to 2 if you want the old behaviour, or undefine it to turn
  289. ** off the advisory error when nesting [[...]].
  290. */
  291. #define LUA_COMPAT_LSTR 1
  292. /*
  293. @@ LUA_COMPAT_GFIND controls compatibility with old 'string.gfind' name.
  294. ** CHANGE it to undefined as soon as you rename 'string.gfind' to
  295. ** 'string.gmatch'.
  296. */
  297. #define LUA_COMPAT_GFIND
  298. /*
  299. @@ LUA_COMPAT_OPENLIB controls compatibility with old 'luaL_openlib'
  300. @* behavior.
  301. ** CHANGE it to undefined as soon as you replace to 'luaL_register'
  302. ** your uses of 'luaL_openlib'
  303. */
  304. #define LUA_COMPAT_OPENLIB
  305. /*
  306. @@ luai_apicheck is the assert macro used by the Lua-C API.
  307. ** CHANGE luai_apicheck if you want Lua to perform some checks in the
  308. ** parameters it gets from API calls. This may slow down the interpreter
  309. ** a bit, but may be quite useful when debugging C code that interfaces
  310. ** with Lua. A useful redefinition is to use assert.h.
  311. */
  312. #if defined(LUA_USE_APICHECK)
  313. #include <assert.h>
  314. #define luai_apicheck(L,o) { (void)L; assert(o); }
  315. #else
  316. #define luai_apicheck(L,o) { (void)L; }
  317. #endif
  318. /*
  319. @@ LUAI_BITSINT defines the number of bits in an int.
  320. ** CHANGE here if Lua cannot automatically detect the number of bits of
  321. ** your machine. Probably you do not need to change this.
  322. */
  323. /* avoid overflows in comparison */
  324. #if INT_MAX-20 < 32760
  325. #define LUAI_BITSINT 16
  326. #elif INT_MAX > 2147483640L
  327. /* int has at least 32 bits */
  328. #define LUAI_BITSINT 32
  329. #else
  330. #error "you must define LUA_BITSINT with number of bits in an integer"
  331. #endif
  332. /*
  333. @@ LUAI_UINT32 is an unsigned integer with at least 32 bits.
  334. @@ LUAI_INT32 is an signed integer with at least 32 bits.
  335. @@ LUAI_UMEM is an unsigned integer big enough to count the total
  336. @* memory used by Lua.
  337. @@ LUAI_MEM is a signed integer big enough to count the total memory
  338. @* used by Lua.
  339. ** CHANGE here if for some weird reason the default definitions are not
  340. ** good enough for your machine. (The definitions in the 'else'
  341. ** part always works, but may waste space on machines with 64-bit
  342. ** longs.) Probably you do not need to change this.
  343. */
  344. #if LUAI_BITSINT >= 32
  345. #define LUAI_UINT32 unsigned int
  346. #define LUAI_INT32 int
  347. #define LUAI_MAXINT32 INT_MAX
  348. #define LUAI_UMEM size_t
  349. #define LUAI_MEM ptrdiff_t
  350. #else
  351. /* 16-bit ints */
  352. #define LUAI_UINT32 unsigned long
  353. #define LUAI_INT32 long
  354. #define LUAI_MAXINT32 LONG_MAX
  355. #define LUAI_UMEM unsigned long
  356. #define LUAI_MEM long
  357. #endif
  358. /*
  359. @@ LUAI_MAXCALLS limits the number of nested calls.
  360. ** CHANGE it if you need really deep recursive calls. This limit is
  361. ** arbitrary; its only purpose is to stop infinite recursion before
  362. ** exhausting memory.
  363. */
  364. #define LUAI_MAXCALLS 20000
  365. /*
  366. @@ LUAI_MAXCSTACK limits the number of Lua stack slots that a C function
  367. @* can use.
  368. ** CHANGE it if you need lots of (Lua) stack space for your C
  369. ** functions. This limit is arbitrary; its only purpose is to stop C
  370. ** functions to consume unlimited stack space. (must be smaller than
  371. ** -LUA_REGISTRYINDEX)
  372. */
  373. #define LUAI_MAXCSTACK 8000
  374. /*
  375. ** {==================================================================
  376. ** CHANGE (to smaller values) the following definitions if your system
  377. ** has a small C stack. (Or you may want to change them to larger
  378. ** values if your system has a large C stack and these limits are
  379. ** too rigid for you.) Some of these constants control the size of
  380. ** stack-allocated arrays used by the compiler or the interpreter, while
  381. ** others limit the maximum number of recursive calls that the compiler
  382. ** or the interpreter can perform. Values too large may cause a C stack
  383. ** overflow for some forms of deep constructs.
  384. ** ===================================================================
  385. */
  386. /*
  387. @@ LUAI_MAXCCALLS is the maximum depth for nested C calls (short) and
  388. @* syntactical nested non-terminals in a program.
  389. */
  390. #define LUAI_MAXCCALLS 200
  391. /*
  392. @@ LUAI_MAXVARS is the maximum number of local variables per function
  393. @* (must be smaller than 250).
  394. */
  395. #define LUAI_MAXVARS 200
  396. /*
  397. @@ LUAI_MAXUPVALUES is the maximum number of upvalues per function
  398. @* (must be smaller than 250).
  399. */
  400. #define LUAI_MAXUPVALUES 60
  401. /*
  402. @@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system.
  403. */
  404. #if 0
  405. #define LUAL_BUFFERSIZE BUFSIZ
  406. #else
  407. #define LUAL_BUFFERSIZE 512
  408. #endif
  409. /* }================================================================== */
  410. /*
  411. ** {==================================================================
  412. @@ LUA_NUMBER is the type of numbers in Lua.
  413. ** CHANGE the following definitions only if you want to build Lua
  414. ** with a number type different from double. You may also need to
  415. ** change lua_number2int & lua_number2integer.
  416. ** ===================================================================
  417. */
  418. #if 0
  419. #define LUA_NUMBER_DOUBLE
  420. #define LUA_NUMBER double
  421. /*
  422. @@ LUAI_UACNUMBER is the result of an 'usual argument conversion'
  423. @* over a number.
  424. */
  425. #define LUAI_UACNUMBER double
  426. #else
  427. #define LUA_NUMBER int
  428. #define LUAI_UACNUMBER int
  429. #endif
  430. /*
  431. @@ LUA_NUMBER_SCAN is the format for reading numbers.
  432. @@ LUA_NUMBER_FMT is the format for writing numbers.
  433. @@ lua_number2str converts a number to a string.
  434. @@ LUAI_MAXNUMBER2STR is maximum size of previous conversion.
  435. @@ lua_str2number converts a string to a number.
  436. */
  437. #if 0
  438. #define LUA_NUMBER_SCAN "%lf"
  439. #define LUA_NUMBER_FMT "%.14g"
  440. #else
  441. #define LUA_NUMBER_SCAN "%d"
  442. #define LUA_NUMBER_FMT "%d"
  443. #endif
  444. #define lua_number2str(s,n) snprintf((s), sizeof (s), LUA_NUMBER_FMT, (n))
  445. #define LUAI_MAXNUMBER2STR 32 /* 16 digits, sign, point, and \0 */
  446. #define lua_str2number(s,p) strtod((s), (p))
  447. /*
  448. @@ The luai_num* macros define the primitive operations over numbers.
  449. */
  450. #if defined(LUA_CORE)
  451. #if 0
  452. #include <math.h>
  453. #endif
  454. #define luai_numadd(a,b) ((a)+(b))
  455. #define luai_numsub(a,b) ((a)-(b))
  456. #define luai_nummul(a,b) ((a)*(b))
  457. #define luai_numdiv(a,b) ((a)/(b))
  458. #if 0
  459. #define luai_nummod(a,b) ((a) - floor((a)/(b))*(b))
  460. #define luai_numpow(a,b) (pow(a,b))
  461. #else
  462. #define luai_nummod(a,b) ((a) % (b))
  463. static inline LUA_NUMBER
  464. luai_numpow (LUA_NUMBER a, LUA_NUMBER b)
  465. {
  466. LUA_NUMBER c;
  467. c = 1;
  468. while (b > 0)
  469. {
  470. c *= a;
  471. b--;
  472. }
  473. return c;
  474. }
  475. #endif
  476. #define luai_numunm(a) (-(a))
  477. #define luai_numeq(a,b) ((a)==(b))
  478. #define luai_numlt(a,b) ((a)<(b))
  479. #define luai_numle(a,b) ((a)<=(b))
  480. #define luai_numisnan(a) (!luai_numeq((a), (a)))
  481. #endif
  482. /*
  483. @@ lua_number2int is a macro to convert lua_Number to int.
  484. @@ lua_number2integer is a macro to convert lua_Number to lua_Integer.
  485. ** CHANGE them if you know a faster way to convert a lua_Number to
  486. ** int (with any rounding method and without throwing errors) in your
  487. ** system. In Pentium machines, a naive typecast from double to int
  488. ** in C is extremely slow, so any alternative is worth trying.
  489. */
  490. #if 0
  491. /* On a Pentium, resort to a trick */
  492. #if defined(LUA_NUMBER_DOUBLE) && !defined(LUA_ANSI) && !defined(__SSE2__) && \
  493. (defined(__i386) || defined (_M_IX86) || defined(__i386__))
  494. /* On a Microsoft compiler, use assembler */
  495. #if defined(_MSC_VER)
  496. #define lua_number2int(i,d) __asm fld d __asm fistp i
  497. #define lua_number2integer(i,n) lua_number2int(i, n)
  498. /* the next trick should work on any Pentium, but sometimes clashes
  499. with a DirectX idiosyncrasy */
  500. #else
  501. union luai_Cast { double l_d; long l_l; };
  502. #define lua_number2int(i,d) \
  503. { volatile union luai_Cast u; u.l_d = (d) + 6755399441055744.0; (i) = u.l_l; }
  504. #define lua_number2integer(i,n) lua_number2int(i, n)
  505. #endif
  506. /* this option always works, but may be slow */
  507. #else
  508. #define lua_number2int(i,d) ((i)=(int)(d))
  509. #define lua_number2integer(i,d) ((i)=(lua_Integer)(d))
  510. #endif
  511. #else
  512. #define lua_number2int(i,d) ((i)=(int)(d))
  513. #define lua_number2integer(i,d) ((i)=(lua_Integer)(d))
  514. #endif
  515. /* }================================================================== */
  516. /*
  517. @@ LUAI_USER_ALIGNMENT_T is a type that requires maximum alignment.
  518. ** CHANGE it if your system requires alignments larger than double. (For
  519. ** instance, if your system supports long doubles and they must be
  520. ** aligned in 16-byte boundaries, then you should add long double in the
  521. ** union.) Probably you do not need to change this.
  522. */
  523. #define LUAI_USER_ALIGNMENT_T union { double u; void *s; long l; }
  524. /*
  525. @@ LUAI_THROW/LUAI_TRY define how Lua does exception handling.
  526. ** CHANGE them if you prefer to use longjmp/setjmp even with C++
  527. ** or if want/don't to use _longjmp/_setjmp instead of regular
  528. ** longjmp/setjmp. By default, Lua handles errors with exceptions when
  529. ** compiling as C++ code, with _longjmp/_setjmp when asked to use them,
  530. ** and with longjmp/setjmp otherwise.
  531. */
  532. #if defined(__cplusplus)
  533. /* C++ exceptions */
  534. #define LUAI_THROW(L,c) throw(c)
  535. #define LUAI_TRY(L,c,a) try { a } catch(...) \
  536. { if ((c)->status == 0) (c)->status = -1; }
  537. #define luai_jmpbuf int /* dummy variable */
  538. #elif defined(LUA_USE_ULONGJMP)
  539. /* in Unix, try _longjmp/_setjmp (more efficient) */
  540. #define LUAI_THROW(L,c) _longjmp((c)->b, 1)
  541. #define LUAI_TRY(L,c,a) if (_setjmp((c)->b) == 0) { a }
  542. #define luai_jmpbuf jmp_buf
  543. #else
  544. /* default handling with long jumps */
  545. #define LUAI_THROW(L,c) longjmp((c)->b, 1)
  546. #define LUAI_TRY(L,c,a) if (setjmp((c)->b) == 0) { a }
  547. #define luai_jmpbuf jmp_buf
  548. #endif
  549. /*
  550. @@ LUA_MAXCAPTURES is the maximum number of captures that a pattern
  551. @* can do during pattern-matching.
  552. ** CHANGE it if you need more captures. This limit is arbitrary.
  553. */
  554. #define LUA_MAXCAPTURES 32
  555. /*
  556. @@ lua_tmpnam is the function that the OS library uses to create a
  557. @* temporary name.
  558. @@ LUA_TMPNAMBUFSIZE is the maximum size of a name created by lua_tmpnam.
  559. ** CHANGE them if you have an alternative to tmpnam (which is considered
  560. ** insecure) or if you want the original tmpnam anyway. By default, Lua
  561. ** uses tmpnam except when POSIX is available, where it uses mkstemp.
  562. */
  563. #if defined(loslib_c) || defined(luaall_c)
  564. #if defined(LUA_USE_MKSTEMP)
  565. #include <unistd.h>
  566. #define LUA_TMPNAMBUFSIZE 32
  567. #define lua_tmpnam(b,e) { \
  568. strcpy(b, "/tmp/lua_XXXXXX"); \
  569. e = mkstemp(b); \
  570. if (e != -1) close(e); \
  571. e = (e == -1); }
  572. #else
  573. #define LUA_TMPNAMBUFSIZE L_tmpnam
  574. #define lua_tmpnam(b,e) { e = (tmpnam(b) == NULL); }
  575. #endif
  576. #endif
  577. /*
  578. @@ lua_popen spawns a new process connected to the current one through
  579. @* the file streams.
  580. ** CHANGE it if you have a way to implement it in your system.
  581. */
  582. #if defined(LUA_USE_POPEN)
  583. #define lua_popen(L,c,m) ((void)L, fflush(NULL), popen(c,m))
  584. #define lua_pclose(L,file) ((void)L, (pclose(file) != -1))
  585. #elif defined(LUA_WIN)
  586. #define lua_popen(L,c,m) ((void)L, _popen(c,m))
  587. #define lua_pclose(L,file) ((void)L, (_pclose(file) != -1))
  588. #else
  589. #define lua_popen(L,c,m) ((void)((void)c, m), \
  590. luaL_error(L, LUA_QL("popen") " not supported"), (FILE*)0)
  591. #define lua_pclose(L,file) ((void)((void)L, file), 0)
  592. #endif
  593. /*
  594. @@ LUA_DL_* define which dynamic-library system Lua should use.
  595. ** CHANGE here if Lua has problems choosing the appropriate
  596. ** dynamic-library system for your platform (either Windows' DLL, Mac's
  597. ** dyld, or Unix's dlopen). If your system is some kind of Unix, there
  598. ** is a good chance that it has dlopen, so LUA_DL_DLOPEN will work for
  599. ** it. To use dlopen you also need to adapt the src/Makefile (probably
  600. ** adding -ldl to the linker options), so Lua does not select it
  601. ** automatically. (When you change the makefile to add -ldl, you must
  602. ** also add -DLUA_USE_DLOPEN.)
  603. ** If you do not want any kind of dynamic library, undefine all these
  604. ** options.
  605. ** By default, _WIN32 gets LUA_DL_DLL and MAC OS X gets LUA_DL_DYLD.
  606. */
  607. #if 0
  608. #if defined(LUA_USE_DLOPEN)
  609. #define LUA_DL_DLOPEN
  610. #endif
  611. #if defined(LUA_WIN)
  612. #define LUA_DL_DLL
  613. #endif
  614. #endif
  615. /*
  616. @@ LUAI_EXTRASPACE allows you to add user-specific data in a lua_State
  617. @* (the data goes just *before* the lua_State pointer).
  618. ** CHANGE (define) this if you really need that. This value must be
  619. ** a multiple of the maximum alignment required for your machine.
  620. */
  621. #define LUAI_EXTRASPACE 0
  622. /*
  623. @@ luai_userstate* allow user-specific actions on threads.
  624. ** CHANGE them if you defined LUAI_EXTRASPACE and need to do something
  625. ** extra when a thread is created/deleted/resumed/yielded.
  626. */
  627. #define luai_userstateopen(L) ((void)L)
  628. #define luai_userstateclose(L) ((void)L)
  629. #define luai_userstatethread(L,L1) ((void)L)
  630. #define luai_userstatefree(L) ((void)L)
  631. #define luai_userstateresume(L,n) ((void)L)
  632. #define luai_userstateyield(L,n) ((void)L)
  633. /*
  634. @@ LUA_INTFRMLEN is the length modifier for integer conversions
  635. @* in 'string.format'.
  636. @@ LUA_INTFRM_T is the integer type correspoding to the previous length
  637. @* modifier.
  638. ** CHANGE them if your system supports long long or does not support long.
  639. */
  640. #if defined(LUA_USELONGLONG)
  641. #define LUA_INTFRMLEN "ll"
  642. #define LUA_INTFRM_T long long
  643. #else
  644. #define LUA_INTFRMLEN "l"
  645. #define LUA_INTFRM_T long
  646. #endif
  647. /* =================================================================== */
  648. /*
  649. ** Local configuration. You can use this space to add your redefinitions
  650. ** without modifying the main part of the file.
  651. */
  652. #endif