external/mit/lua/dist/src/luaconf.h

   1 /*      $NetBSD: luaconf.h,v 1.14 2015/10/08 13:21:00 mbalmer Exp $     */
   2
   3 /*
   4 ** Id: luaconf.h,v 1.251 2015/05/20 17:39:23 roberto Exp
   5 ** Configuration file for Lua
   6 ** See Copyright Notice in lua.h
   7 */
   8
   9
  10 #ifndef luaconf_h
  11 #define luaconf_h
  12
  13 #ifndef _KERNEL
  14 #include <limits.h>
  15 #include <stddef.h>
  16 #else
  17 #include <machine/limits.h>
  18 #include <sys/systm.h>
  19 #endif
  20
  21
  22 /*
  23 ** ===================================================================
  24 ** Search for "@@" to find all configurable definitions.
  25 ** ===================================================================
  26 */
  27
  28
  29 /*
  30 ** {====================================================================
  31 ** System Configuration: macros to adapt (if needed) Lua to some
  32 ** particular platform, for instance compiling it with 32-bit numbers or
  33 ** restricting it to C89.
  34 ** =====================================================================
  35 */
  36
  37 /*
  38 @@ LUA_32BITS enables Lua with 32-bit integers and 32-bit floats. You
  39 ** can also define LUA_32BITS in the make file, but changing here you
  40 ** ensure that all software connected to Lua will be compiled with the
  41 ** same configuration.
  42 */
  43 /* #define LUA_32BITS */
  44
  45
  46 /*
  47 @@ LUA_USE_C89 controls the use of non-ISO-C89 features.
  48 ** Define it if you want Lua to avoid the use of a few C99 features
  49 ** or Windows-specific features on Windows.
  50 */
  51 /* #define LUA_USE_C89 */
  52
  53
  54 /*
  55 ** By default, Lua on Windows use (some) specific Windows features
  56 */
  57 #if !defined(LUA_USE_C89) && defined(_WIN32) && !defined(_WIN32_WCE)
  58 #define LUA_USE_WINDOWS  /* enable goodies for regular Windows */
  59 #endif
  60
  61
  62 #if defined(LUA_USE_WINDOWS)
  63 #define LUA_DL_DLL      /* enable support for DLL */
  64 #define LUA_USE_C89     /* broadly, Windows is C89 */
  65 #endif
  66
  67
  68 #if defined(LUA_USE_LINUX)
  69 #define LUA_USE_POSIX
  70 #define LUA_USE_DLOPEN          /* needs an extra library: -ldl */
  71 #define LUA_USE_READLINE        /* needs some extra libraries */
  72 #endif
  73
  74
  75 #if defined(LUA_USE_MACOSX)
  76 #define LUA_USE_POSIX
  77 #define LUA_USE_DLOPEN          /* MacOS does not need -ldl */
  78 #define LUA_USE_READLINE        /* needs an extra library: -lreadline */
  79 #endif
  80
  81
  82 /*
  83 @@ LUA_C89_NUMBERS ensures that Lua uses the largest types available for
  84 ** C89 ('long' and 'double'); Windows always has '__int64', so it does
  85 ** not need to use this case.
  86 */
  87 #if defined(LUA_USE_C89) && !defined(LUA_USE_WINDOWS)
  88 #define LUA_C89_NUMBERS
  89 #endif
  90
  91
  92
  93 /*
  94 @@ LUAI_BITSINT defines the (minimum) number of bits in an 'int'.
  95 */
  96 /* avoid undefined shifts */
  97 #if ((INT_MAX >> 15) >> 15) >= 1
  98 #define LUAI_BITSINT    32
  99 #else
 100 /* 'int' always must have at least 16 bits */
 101 #define LUAI_BITSINT    16
 102 #endif
 103
 104
 105 /*
 106 @@ LUA_INT_TYPE defines the type for Lua integers.
 107 @@ LUA_FLOAT_TYPE defines the type for Lua floats.
 108 ** Lua should work fine with any mix of these options (if supported
 109 ** by your C compiler). The usual configurations are 64-bit integers
 110 ** and 'double' (the default), 32-bit integers and 'float' (for
 111 ** restricted platforms), and 'long'/'double' (for C compilers not
 112 ** compliant with C99, which may not have support for 'long long').
 113 */
 114
 115 /* predefined options for LUA_INT_TYPE */
 116 #define LUA_INT_INT             1
 117 #define LUA_INT_LONG            2
 118 #define LUA_INT_LONGLONG        3
 119
 120 /* predefined options for LUA_FLOAT_TYPE */
 121 #define LUA_FLOAT_FLOAT         1
 122 #define LUA_FLOAT_DOUBLE        2
 123 #define LUA_FLOAT_LONGDOUBLE    3
 124
 125 #if defined(LUA_32BITS)         /* { */
 126 /*
 127 ** 32-bit integers and 'float'
 128 */
 129 #if LUAI_BITSINT >= 32  /* use 'int' if big enough */
 130 #define LUA_INT_TYPE    LUA_INT_INT
 131 #else  /* otherwise use 'long' */
 132 #define LUA_INT_TYPE    LUA_INT_LONG
 133 #endif
 134 #define LUA_FLOAT_TYPE  LUA_FLOAT_FLOAT
 135
 136 #elif defined(LUA_C89_NUMBERS)  /* }{ */
 137 /*
 138 ** largest types available for C89 ('long' and 'double')
 139 */
 140 #define LUA_INT_TYPE    LUA_INT_LONG
 141 #define LUA_FLOAT_TYPE  LUA_FLOAT_DOUBLE
 142
 143 #endif                          /* } */
 144
 145
 146 /*
 147 ** default configuration for 64-bit Lua ('long long' and 'double')
 148 */
 149 #if !defined(LUA_INT_TYPE)
 150 #define LUA_INT_TYPE    LUA_INT_LONGLONG
 151 #endif
 152
 153 #if !defined(LUA_FLOAT_TYPE)
 154 #define LUA_FLOAT_TYPE  LUA_FLOAT_DOUBLE
 155 #endif                                                          /* } */
 156
 157 /* }================================================================== */
 158
 159
 160
 161
 162 /*
 163 ** {==================================================================
 164 ** Configuration for Paths.
 165 ** ===================================================================
 166 */
 167
 168 /*
 169 @@ LUA_PATH_DEFAULT is the default path that Lua uses to look for
 170 ** Lua libraries.
 171 @@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for
 172 ** C libraries.
 173 ** CHANGE them if your machine has a non-conventional directory
 174 ** hierarchy or if you want to install your libraries in
 175 ** non-conventional directories.
 176 */
 177 #define LUA_VDIR        LUA_VERSION_MAJOR "." LUA_VERSION_MINOR
 178 #if defined(_WIN32)     /* { */
 179 /*
 180 ** In Windows, any exclamation mark ('!') in the path is replaced by the
 181 ** path of the directory of the executable file of the current process.
 182 */
 183 #define LUA_LDIR        "!\\lua\\"
 184 #define LUA_CDIR        "!\\"
 185 #define LUA_SHRDIR      "!\\..\\share\\lua\\" LUA_VDIR "\\"
 186 #define LUA_PATH_DEFAULT  \
 187                 LUA_LDIR"?.lua;"  LUA_LDIR"?\\init.lua;" \
 188                 LUA_CDIR"?.lua;"  LUA_CDIR"?\\init.lua;" \
 189                 LUA_SHRDIR"?.lua;" LUA_SHRDIR"?\\init.lua;" \
 190                 ".\\?.lua;" ".\\?\\init.lua"
 191 #define LUA_CPATH_DEFAULT \
 192                 LUA_CDIR"?.dll;" \
 193                 LUA_CDIR"..\\lib\\lua\\" LUA_VDIR "\\?.dll;" \
 194                 LUA_CDIR"loadall.dll;" ".\\?.dll"
 195
 196 #else                   /* }{ */
 197
 198 #define LUA_ROOT        "/usr/local/"
 199 #define LUA_LDIR        LUA_ROOT "share/lua/" LUA_VDIR "/"
 200 #define LUA_CDIR        LUA_ROOT "lib/lua/" LUA_VDIR "/"
 201 #define LUA_PATH_DEFAULT  \
 202                 LUA_LDIR"?.lua;"  LUA_LDIR"?/init.lua;" \
 203                 LUA_CDIR"?.lua;"  LUA_CDIR"?/init.lua;" \
 204                 "./?.lua;" "./?/init.lua"
 205 #define LUA_CPATH_DEFAULT \
 206                 LUA_CDIR"?.so;" LUA_CDIR"loadall.so;" "./?.so"
 207 #endif                  /* } */
 208
 209
 210 /*
 211 @@ LUA_DIRSEP is the directory separator (for submodules).
 212 ** CHANGE it if your machine does not use "/" as the directory separator
 213 ** and is not Windows. (On Windows Lua automatically uses "\".)
 214 */
 215 #if defined(_WIN32)
 216 #define LUA_DIRSEP      "\\"
 217 #else
 218 #define LUA_DIRSEP      "/"
 219 #endif
 220
 221 /* }================================================================== */
 222
 223
 224 /*
 225 ** {==================================================================
 226 ** Marks for exported symbols in the C code
 227 ** ===================================================================
 228 */
 229
 230 /*
 231 @@ LUA_API is a mark for all core API functions.
 232 @@ LUALIB_API is a mark for all auxiliary library functions.
 233 @@ LUAMOD_API is a mark for all standard library opening functions.
 234 ** CHANGE them if you need to define those functions in some special way.
 235 ** For instance, if you want to create one Windows DLL with the core and
 236 ** the libraries, you may want to use the following definition (define
 237 ** LUA_BUILD_AS_DLL to get it).
 238 */
 239 #if defined(LUA_BUILD_AS_DLL)   /* { */
 240
 241 #if defined(LUA_CORE) || defined(LUA_LIB)       /* { */
 242 #define LUA_API __declspec(dllexport)
 243 #else                                           /* }{ */
 244 #define LUA_API __declspec(dllimport)
 245 #endif                                          /* } */
 246
 247 #else                           /* }{ */
 248
 249 #define LUA_API         extern
 250
 251 #endif                          /* } */
 252
 253
 254 /* more often than not the libs go together with the core */
 255 #define LUALIB_API      LUA_API
 256 #define LUAMOD_API      LUALIB_API
 257
 258
 259 /*
 260 @@ LUAI_FUNC is a mark for all extern functions that are not to be
 261 ** exported to outside modules.
 262 @@ LUAI_DDEF and LUAI_DDEC are marks for all extern (const) variables
 263 ** that are not to be exported to outside modules (LUAI_DDEF for
 264 ** definitions and LUAI_DDEC for declarations).
 265 ** CHANGE them if you need to mark them in some special way. Elf/gcc
 266 ** (versions 3.2 and later) mark them as "hidden" to optimize access
 267 ** when Lua is compiled as a shared library. Not all elf targets support
 268 ** this attribute. Unfortunately, gcc does not offer a way to check
 269 ** whether the target offers that support, and those without support
 270 ** give a warning about it. To avoid these warnings, change to the
 271 ** default definition.
 272 */
 273 #if defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \
 274     defined(__ELF__)            /* { */
 275 #define LUAI_FUNC       __attribute__((visibility("hidden"))) extern
 276 #else                           /* }{ */
 277 #define LUAI_FUNC       extern
 278 #endif                          /* } */
 279
 280 #define LUAI_DDEC       LUAI_FUNC
 281 #define LUAI_DDEF       /* empty */
 282
 283 /* }================================================================== */
 284
 285
 286 /*
 287 ** {==================================================================
 288 ** Compatibility with previous versions
 289 ** ===================================================================
 290 */
 291
 292 /*
 293 @@ LUA_COMPAT_5_2 controls other macros for compatibility with Lua 5.2.
 294 @@ LUA_COMPAT_5_1 controls other macros for compatibility with Lua 5.1.
 295 ** You can define it to get all options, or change specific options
 296 ** to fit your specific needs.
 297 */
 298 #if defined(LUA_COMPAT_5_2)     /* { */
 299
 300 /*
 301 @@ LUA_COMPAT_MATHLIB controls the presence of several deprecated
 302 ** functions in the mathematical library.
 303 */
 304 #define LUA_COMPAT_MATHLIB
 305
 306 /*
 307 @@ LUA_COMPAT_BITLIB controls the presence of library 'bit32'.
 308 */
 309 #define LUA_COMPAT_BITLIB
 310
 311 /*
 312 @@ LUA_COMPAT_IPAIRS controls the effectiveness of the __ipairs metamethod.
 313 */
 314 #define LUA_COMPAT_IPAIRS
 315
 316 /*
 317 @@ LUA_COMPAT_APIINTCASTS controls the presence of macros for
 318 ** manipulating other integer types (lua_pushunsigned, lua_tounsigned,
 319 ** luaL_checkint, luaL_checklong, etc.)
 320 */
 321 #define LUA_COMPAT_APIINTCASTS
 322
 323 #endif                          /* } */
 324
 325
 326 #if defined(LUA_COMPAT_5_1)     /* { */
 327
 328 /* Incompatibilities from 5.2 -> 5.3 */
 329 #define LUA_COMPAT_MATHLIB
 330 #define LUA_COMPAT_APIINTCASTS
 331
 332 /*
 333 @@ LUA_COMPAT_UNPACK controls the presence of global 'unpack'.
 334 ** You can replace it with 'table.unpack'.
 335 */
 336 #define LUA_COMPAT_UNPACK
 337
 338 /*
 339 @@ LUA_COMPAT_LOADERS controls the presence of table 'package.loaders'.
 340 ** You can replace it with 'package.searchers'.
 341 */
 342 #define LUA_COMPAT_LOADERS
 343
 344 /*
 345 @@ macro 'lua_cpcall' emulates deprecated function lua_cpcall.
 346 ** You can call your C function directly (with light C functions).
 347 */
 348 #define lua_cpcall(L,f,u)  \
 349         (lua_pushcfunction(L, (f)), \
 350          lua_pushlightuserdata(L,(u)), \
 351          lua_pcall(L,1,0,0))
 352
 353
 354 /*
 355 @@ LUA_COMPAT_LOG10 defines the function 'log10' in the math library.
 356 ** You can rewrite 'log10(x)' as 'log(x, 10)'.
 357 */
 358 #define LUA_COMPAT_LOG10
 359
 360 /*
 361 @@ LUA_COMPAT_LOADSTRING defines the function 'loadstring' in the base
 362 ** library. You can rewrite 'loadstring(s)' as 'load(s)'.
 363 */
 364 #define LUA_COMPAT_LOADSTRING
 365
 366 /*
 367 @@ LUA_COMPAT_MAXN defines the function 'maxn' in the table library.
 368 */
 369 #define LUA_COMPAT_MAXN
 370
 371 /*
 372 @@ The following macros supply trivial compatibility for some
 373 ** changes in the API. The macros themselves document how to
 374 ** change your code to avoid using them.
 375 */
 376 #define lua_strlen(L,i)         lua_rawlen(L, (i))
 377
 378 #define lua_objlen(L,i)         lua_rawlen(L, (i))
 379
 380 #define lua_equal(L,idx1,idx2)          lua_compare(L,(idx1),(idx2),LUA_OPEQ)
 381 #define lua_lessthan(L,idx1,idx2)       lua_compare(L,(idx1),(idx2),LUA_OPLT)
 382
 383 /*
 384 @@ LUA_COMPAT_MODULE controls compatibility with previous
 385 ** module functions 'module' (Lua) and 'luaL_register' (C).
 386 */
 387 #define LUA_COMPAT_MODULE
 388
 389 #endif                          /* } */
 390
 391
 392 /*
 393 @@ LUA_COMPAT_FLOATSTRING makes Lua format integral floats without a
 394 @@ a float mark ('.0').
 395 ** This macro is not on by default even in compatibility mode,
 396 ** because this is not really an incompatibility.
 397 */
 398 /* #define LUA_COMPAT_FLOATSTRING */
 399
 400 /* }================================================================== */
 401
 402
 403
 404 /*
 405 ** {==================================================================
 406 ** Configuration for Numbers.
 407 ** Change these definitions if no predefined LUA_FLOAT_* / LUA_INT_*
 408 ** satisfy your needs.
 409 ** ===================================================================
 410 */
 411
 412 #ifndef _KERNEL
 413 /*
 414 @@ LUA_NUMBER is the floating-point type used by Lua.
 415 @@ LUAI_UACNUMBER is the result of an 'usual argument conversion'
 416 @@ over a floating number.
 417 @@ l_mathlim(x) corrects limit name 'x' to the proper float type
 418 ** by prefixing it with one of FLT/DBL/LDBL.
 419 @@ LUA_NUMBER_FRMLEN is the length modifier for writing floats.
 420 @@ LUA_NUMBER_FMT is the format for writing floats.
 421 @@ lua_number2str converts a float to a string.
 422 @@ l_mathop allows the addition of an 'l' or 'f' to all math operations.
 423 @@ lua_str2number converts a decimal numeric string to a number.
 424 */
 425
 426 #if LUA_FLOAT_TYPE == LUA_FLOAT_FLOAT           /* { single float */
 427
 428 #define LUA_NUMBER      float
 429
 430 #define l_mathlim(n)            (FLT_##n)
 431
 432 #define LUAI_UACNUMBER  double
 433
 434 #define LUA_NUMBER_FRMLEN       ""
 435 #define LUA_NUMBER_FMT          "%.7g"
 436
 437 #define l_mathop(op)            op##f
 438
 439 #define lua_str2number(s,p)     strtof((s), (p))
 440
 441
 442 #elif LUA_FLOAT_TYPE == LUA_FLOAT_LONGDOUBLE    /* }{ long double */
 443
 444 #define LUA_NUMBER      long double
 445
 446 #define l_mathlim(n)            (LDBL_##n)
 447
 448 #define LUAI_UACNUMBER  long double
 449
 450 #define LUA_NUMBER_FRMLEN       "L"
 451 #define LUA_NUMBER_FMT          "%.19Lg"
 452
 453 #define l_mathop(op)            op##l
 454
 455 #define lua_str2number(s,p)     strtold((s), (p))
 456
 457 #elif LUA_FLOAT_TYPE == LUA_FLOAT_DOUBLE        /* }{ double */
 458
 459 #define LUA_NUMBER      double
 460
 461 #define l_mathlim(n)            (DBL_##n)
 462
 463 #define LUAI_UACNUMBER  double
 464
 465 #define LUA_NUMBER_FRMLEN       ""
 466 #define LUA_NUMBER_FMT          "%.14g"
 467
 468 #define l_mathop(op)            op
 469
 470 #define lua_str2number(s,p)     strtod((s), (p))
 471
 472 #else                                           /* }{ */
 473
 474 #error "numeric float type not defined"
 475
 476 #endif                                  /* } */
 477
 478
 479 #define l_floor(x)              (l_mathop(floor)(x))
 480
 481 #define lua_number2str(s,n)     sprintf((s), LUA_NUMBER_FMT, (n))
 482
 483
 484 /*
 485 @@ lua_numbertointeger converts a float number to an integer, or
 486 ** returns 0 if float is not within the range of a lua_Integer.
 487 ** (The range comparisons are tricky because of rounding. The tests
 488 ** here assume a two-complement representation, where MININTEGER always
 489 ** has an exact representation as a float; MAXINTEGER may not have one,
 490 ** and therefore its conversion to float may have an ill-defined value.)
 491 */
 492 #define lua_numbertointeger(n,p) \
 493   ((n) >= (LUA_NUMBER)(LUA_MININTEGER) && \
 494    (n) < -(LUA_NUMBER)(LUA_MININTEGER) && \
 495       (*(p) = (LUA_INTEGER)(n), 1))
 496
 497 #endif /*_KERNEL */
 498
 499
 500 /*
 501 @@ LUA_INTEGER is the integer type used by Lua.
 502 **
 503 @@ LUA_UNSIGNED is the unsigned version of LUA_INTEGER.
 504 **
 505 @@ LUAI_UACINT is the result of an 'usual argument conversion'
 506 @@ over a lUA_INTEGER.
 507 @@ LUA_INTEGER_FRMLEN is the length modifier for reading/writing integers.
 508 @@ LUA_INTEGER_FMT is the format for writing integers.
 509 @@ LUA_MAXINTEGER is the maximum value for a LUA_INTEGER.
 510 @@ LUA_MININTEGER is the minimum value for a LUA_INTEGER.
 511 @@ lua_integer2str converts an integer to a string.
 512 */
 513
 514
 515 /* The following definitions are good for most cases here */
 516
 517 #define LUA_INTEGER_FMT         "%" LUA_INTEGER_FRMLEN "d"
 518 #define lua_integer2str(s,n)    sprintf((s), LUA_INTEGER_FMT, (n))
 519
 520 #define LUAI_UACINT             LUA_INTEGER
 521
 522 /*
 523 ** use LUAI_UACINT here to avoid problems with promotions (which
 524 ** can turn a comparison between unsigneds into a signed comparison)
 525 */
 526 #define LUA_UNSIGNED            unsigned LUAI_UACINT
 527
 528
 529 /* now the variable definitions */
 530
 531 #if LUA_INT_TYPE == LUA_INT_INT         /* { int */
 532
 533 #define LUA_INTEGER             int
 534 #define LUA_INTEGER_FRMLEN      ""
 535
 536 #define LUA_MAXINTEGER          INT_MAX
 537 #define LUA_MININTEGER          INT_MIN
 538
 539 #elif LUA_INT_TYPE == LUA_INT_LONG      /* }{ long */
 540
 541 #define LUA_INTEGER             long
 542 #define LUA_INTEGER_FRMLEN      "l"
 543
 544 #define LUA_MAXINTEGER          LONG_MAX
 545 #define LUA_MININTEGER          LONG_MIN
 546
 547 #elif LUA_INT_TYPE == LUA_INT_LONGLONG  /* }{ long long */
 548
 549 #if defined(LLONG_MAX)          /* { */
 550 /* use ISO C99 stuff */
 551
 552 #define LUA_INTEGER             long long
 553 #define LUA_INTEGER_FRMLEN      "ll"
 554
 555 #define LUA_MAXINTEGER          LLONG_MAX
 556 #define LUA_MININTEGER          LLONG_MIN
 557
 558 #elif defined(LUA_USE_WINDOWS) /* }{ */
 559 /* in Windows, can use specific Windows types */
 560
 561 #define LUA_INTEGER             __int64
 562 #define LUA_INTEGER_FRMLEN      "I64"
 563
 564 #define LUA_MAXINTEGER          _I64_MAX
 565 #define LUA_MININTEGER          _I64_MIN
 566
 567 #else                           /* }{ */
 568
 569 #error "Compiler does not support 'long long'. Use option '-DLUA_32BITS' \
 570   or '-DLUA_C89_NUMBERS' (see file 'luaconf.h' for details)"
 571
 572 #endif                          /* } */
 573
 574 #else                           /* }{ */
 575
 576 #error "numeric integer type not defined"
 577
 578 #endif                          /* } */
 579
 580 /* }================================================================== */
 581
 582
 583 /*
 584 ** {==================================================================
 585 ** Dependencies with C99 and other C details
 586 ** ===================================================================
 587 */
 588
 589 /*
 590 @@ lua_strx2number converts an hexadecimal numeric string to a number.
 591 ** In C99, 'strtod' does that conversion. Otherwise, you can
 592 ** leave 'lua_strx2number' undefined and Lua will provide its own
 593 ** implementation.
 594 */
 595 #if !defined(LUA_USE_C89)
 596 #define lua_strx2number(s,p)    lua_str2number(s,p)
 597 #endif
 598
 599
 600 /*
 601 @@ lua_number2strx converts a float to an hexadecimal numeric string.
 602 ** In C99, 'sprintf' (with format specifiers '%a'/'%A') does that.
 603 ** Otherwise, you can leave 'lua_number2strx' undefined and Lua will
 604 ** provide its own implementation.
 605 */
 606 #if !defined(LUA_USE_C89)
 607 #define lua_number2strx(L,b,f,n)        sprintf(b,f,n)
 608 #endif
 609
 610
 611 /*
 612 ** 'strtof' and 'opf' variants for math functions are not valid in
 613 ** C89. Otherwise, the macro 'HUGE_VALF' is a good proxy for testing the
 614 ** availability of these variants. ('math.h' is already included in
 615 ** all files that use these macros.)
 616 */
 617 #if defined(LUA_USE_C89) || (defined(HUGE_VAL) && !defined(HUGE_VALF))
 618 #undef l_mathop  /* variants not available */
 619 #undef lua_str2number
 620 #define l_mathop(op)            (lua_Number)op  /* no variant */
 621 #define lua_str2number(s,p)     ((lua_Number)strtod((s), (p)))
 622 #endif
 623
 624
 625 /*
 626 @@ LUA_KCONTEXT is the type of the context ('ctx') for continuation
 627 ** functions.  It must be a numerical type; Lua will use 'intptr_t' if
 628 ** available, otherwise it will use 'ptrdiff_t' (the nearest thing to
 629 ** 'intptr_t' in C89)
 630 */
 631 #define LUA_KCONTEXT    ptrdiff_t
 632
 633 #if !defined(LUA_USE_C89) && defined(__STDC_VERSION__) && \
 634     __STDC_VERSION__ >= 199901L
 635 #include <stdint.h>
 636 #if defined(INTPTR_MAX)  /* even in C99 this type is optional */
 637 #undef LUA_KCONTEXT
 638 #define LUA_KCONTEXT    intptr_t
 639 #endif
 640 #endif
 641
 642
 643 /*
 644 @@ lua_getlocaledecpoint gets the locale "radix character" (decimal point).
 645 ** Change that if you do not want to use C locales. (Code using this
 646 ** macro must include header 'locale.h'.)
 647 */
 648 #if !defined(lua_getlocaledecpoint)
 649 #define lua_getlocaledecpoint()         (localeconv()->decimal_point[0])
 650 #endif
 651
 652 /* }================================================================== */
 653
 654
 655 /*
 656 ** {==================================================================
 657 ** Language Variations
 658 ** =====================================================================
 659 */
 660
 661 /*
 662 @@ LUA_NOCVTN2S/LUA_NOCVTS2N control how Lua performs some
 663 ** coercions. Define LUA_NOCVTN2S to turn off automatic coercion from
 664 ** numbers to strings. Define LUA_NOCVTS2N to turn off automatic
 665 ** coercion from strings to numbers.
 666 */
 667 /* #define LUA_NOCVTN2S */
 668 /* #define LUA_NOCVTS2N */
 669
 670
 671 /*
 672 @@ LUA_USE_APICHECK turns on several consistency checks on the C API.
 673 ** Define it as a help when debugging C code.
 674 */
 675 #if defined(LUA_USE_APICHECK)
 676 #include <assert.h>
 677 #define luai_apicheck(l,e)      assert(e)
 678 #endif
 679
 680 /* }================================================================== */
 681
 682
 683 /*
 684 ** {==================================================================
 685 ** Macros that affect the API and must be stable (that is, must be the
 686 ** same when you compile Lua and when you compile code that links to
 687 ** Lua). You probably do not want/need to change them.
 688 ** =====================================================================
 689 */
 690
 691 /*
 692 @@ LUAI_MAXSTACK limits the size of the Lua stack.
 693 ** CHANGE it if you need a different limit. This limit is arbitrary;
 694 ** its only purpose is to stop Lua from consuming unlimited stack
 695 ** space (and to reserve some numbers for pseudo-indices).
 696 */
 697 #if LUAI_BITSINT >= 32
 698 #define LUAI_MAXSTACK           1000000
 699 #else
 700 #define LUAI_MAXSTACK           15000
 701 #endif
 702
 703
 704 /*
 705 @@ LUA_EXTRASPACE defines the size of a raw memory area associated with
 706 ** a Lua state with very fast access.
 707 ** CHANGE it if you need a different size.
 708 */
 709 #define LUA_EXTRASPACE          (sizeof(void *))
 710
 711
 712 /*
 713 @@ LUA_IDSIZE gives the maximum size for the description of the source
 714 @@ of a function in debug information.
 715 ** CHANGE it if you want a different size.
 716 */
 717 #define LUA_IDSIZE      60
 718
 719
 720 /*
 721 @@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system.
 722 ** CHANGE it if it uses too much C-stack space. (For long double,
 723 ** 'string.format("%.99f", 1e4932)' needs ~5030 bytes, so a
 724 ** smaller buffer would force a memory allocation for each call to
 725 ** 'string.format'.)
 726 */
 727 #if defined(LUA_FLOAT_LONGDOUBLE)
 728 #define LUAL_BUFFERSIZE         8192
 729 #else
 730 #define LUAL_BUFFERSIZE   ((int)(0x80 * sizeof(void*) * sizeof(lua_Integer)))
 731 #endif
 732
 733 /* }================================================================== */
 734
 735
 736 /*
 737 @@ LUA_QL describes how error messages quote program elements.
 738 ** Lua does not use these macros anymore; they are here for
 739 ** compatibility only.
 740 */
 741 #define LUA_QL(x)       "'" x "'"
 742 #define LUA_QS          LUA_QL("%s")
 743
 744
 745
 746
 747 /* =================================================================== */
 748
 749 /*
 750 ** Local configuration. You can use this space to add your redefinitions
 751 ** without modifying the main part of the file.
 752 */
 753
 754 #if defined(__NetBSD__) || defined(__minix)
 755
 756 /* Integer types */
 757 #undef LUA_INTEGER
 758 #undef LUA_INTEGER_FRMLEN
 759 #undef LUA_UNSIGNED
 760 #undef LUA_MAXUNSIGNED
 761 #undef LUA_MAXINTEGER
 762 #undef LUA_MININTEGER
 763
 764 #define LUA_INTEGER             intmax_t
 765 #define LUA_INTEGER_FRMLEN      "j"
 766 #define LUA_UNSIGNED            uintmax_t
 767 #define LUA_MAXUNSIGNED         UINTMAX_MAX
 768 #define LUA_MAXINTEGER          INTMAX_MAX
 769 #define LUA_MININTEGER          INTMAX_MIN
 770
 771 /* Path */
 772 #undef LUA_ROOT
 773 #undef LUA_PATH_DEFAULT
 774 #undef LUA_CPATH_DEFAULT
 775
 776 #define LUA_ROOT        "/usr/"
 777 #define LUA_PATH_DEFAULT  \
 778                 LUA_LDIR"?.lua;"  LUA_LDIR"?/init.lua;" \
 779                 LUA_CDIR"?.lua;"  LUA_CDIR"?/init.lua"
 780 #define LUA_CPATH_DEFAULT \
 781                 LUA_CDIR"?.so;" LUA_CDIR"loadall.so"
 782
 783 #ifndef _KERNEL
 784
 785 #include <stdint.h>
 786
 787 #else /* _KERNEL */
 788
 789 #define LUA_NUMBER              LUA_INTEGER
 790 #define LUA_NUMBER_FMT          LUA_INTEGER_FMT
 791
 792 /* setjmp.h */
 793 #define LUAI_THROW(L,c)         longjmp(&((c)->b))
 794 #define LUAI_TRY(L,c,a)         if (setjmp(&((c)->b)) == 0) { a }
 795 #define luai_jmpbuf             label_t
 796
 797 /* time.h */
 798 #include <sys/time.h>
 799 #define time(p)                 (time_uptime)
 800
 801 /* stdio.h */
 802 #define lua_writestring(s,l)    printf("%s", (s))
 803 #define lua_writeline()         printf("\n")
 804
 805 #define sprintf(s,fmt,...)      snprintf(s, sizeof(s), fmt, __VA_ARGS__)
 806
 807 /* string.h */
 808 #define strcoll strcmp
 809
 810 /* stdlib.h */
 811 #define abort()                 panic("Lua has aborted!")
 812
 813 #endif /* _KERNEL */
 814
 815 #endif /* __NetBSD__ || __minix */
 816
 817 #endif
 818