mirror of https://github.com/lua/lua
313 lines
6.4 KiB
C
313 lines
6.4 KiB
C
/*
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** $Id: luaconf.h,v 1.10 2004/08/30 13:44:04 roberto Exp roberto $
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** Configuration file for Lua
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** See Copyright Notice in lua.h
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*/
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#ifndef lconfig_h
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#define lconfig_h
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#include <limits.h>
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#include <stddef.h>
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/*
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** {======================================================
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** Index (search for keyword to find corresponding entry)
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** =======================================================
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*/
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/* }====================================================== */
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/*
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** {======================================================
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** Generic configuration
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** =======================================================
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*/
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/* default path */
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#define LUA_PATH_DEFAULT "?;?.lua"
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/* type of numbers in Lua */
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#define LUA_NUMBER double
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/* formats for Lua numbers */
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#define LUA_NUMBER_SCAN "%lf"
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#define LUA_NUMBER_FMT "%.14g"
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/* type for integer functions */
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#define LUA_INTEGER long
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/* mark for all API functions */
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#define LUA_API extern
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/* mark for auxlib functions */
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#define LUALIB_API extern
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/* buffer size used by lauxlib buffer system */
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#define LUAL_BUFFERSIZE BUFSIZ
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/* first index for arrays */
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#define LUA_FIRSTINDEX 1
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/* assertions in Lua (mainly for internal debugging) */
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#define lua_assert(c) /* empty */
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/* }====================================================== */
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/*
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** {======================================================
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** Stand-alone configuration
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** =======================================================
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*/
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#ifdef lua_c
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/* definition of `isatty' */
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#ifdef _POSIX_C_SOURCE
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#include <unistd.h>
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#define stdin_is_tty() isatty(0)
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#else
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#define stdin_is_tty() 1 /* assume stdin is a tty */
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#endif
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#define PROMPT "> "
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#define PROMPT2 ">> "
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#define PROGNAME "lua"
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/*
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** this macro allows you to open other libraries when starting the
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** stand-alone interpreter
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*/
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#define lua_userinit(L) luaopen_stdlibs(L)
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/*
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** #define lua_userinit(L) { int luaopen_mylibs(lua_State *L); \
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** luaopen_stdlibs(L); luaopen_mylibs(L); }
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*/
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/*
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** this macro can be used by some `history' system to save lines
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** read in manual input
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*/
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#define lua_saveline(L,line) /* empty */
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#endif
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/* }====================================================== */
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/*
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** {======================================================
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** Core configuration
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** =======================================================
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*/
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#ifdef LUA_CORE
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/* LUA-C API assertions */
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#define api_check(L, o) /* empty */
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/* an unsigned integer with at least 32 bits */
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#define LUA_UINT32 unsigned long
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/* a signed integer with at least 32 bits */
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#define LUA_INT32 long
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#define LUA_MAXINT32 LONG_MAX
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/* maximum depth for calls (unsigned short) */
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#define LUA_MAXCALLS 4096
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/*
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** maximum depth for C calls (unsigned short): Not too big, or may
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** overflow the C stack...
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*/
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#define LUA_MAXCCALLS 200
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/* maximum size for the virtual stack of a C function */
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#define MAXCSTACK 2048
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/*
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** maximum number of syntactical nested non-terminals: Not too big,
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** or may overflow the C stack...
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*/
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#define LUA_MAXPARSERLEVEL 200
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/* maximum number of variables declared in a function */
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#define MAXVARS 200 /* <MAXSTACK */
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/* maximum number of upvalues per function */
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#define MAXUPVALUES 32 /* <MAXSTACK */
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/* maximum size of expressions for optimizing `while' code */
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#define MAXEXPWHILE 100
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/* function to convert a lua_Number to int (with any rounding method) */
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#if defined(__GNUC__) && defined(__i386)
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#define lua_number2int(i,d) __asm__ ("fistpl %0":"=m"(i):"t"(d):"st")
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#elif 0
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/* on machines compliant with C99, you can try `lrint' */
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#include <math.h>
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#define lua_number2int(i,d) ((i)=lrint(d))
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#else
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#define lua_number2int(i,d) ((i)=(int)(d))
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#endif
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/* function to convert a lua_Number to lua_Integer (with any rounding method) */
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#define lua_number2integer(i,n) lua_number2int(i,n)
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/* function to convert a lua_Number to a string */
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#include <stdio.h>
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#define lua_number2str(s,n) sprintf((s), LUA_NUMBER_FMT, (n))
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/* function to convert a string to a lua_Number */
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#define lua_str2number(s,p) strtod((s), (p))
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/* result of a `usual argument conversion' over lua_Number */
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#define LUA_UACNUMBER double
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/* number of bits in an `int' */
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/* avoid overflows in comparison */
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#if INT_MAX-20 < 32760
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#define LUA_BITSINT 16
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#elif INT_MAX > 2147483640L
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/* machine has at least 32 bits */
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#define LUA_BITSINT 32
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#else
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#error "you must define LUA_BITSINT with number of bits in an integer"
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#endif
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/* type to ensure maximum alignment */
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#define LUSER_ALIGNMENT_T union { double u; void *s; long l; }
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/* exception handling */
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#ifndef __cplusplus
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/* default handling with long jumps */
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#include <setjmp.h>
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#define L_THROW(c) longjmp((c)->b, 1)
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#define L_TRY(c,a) if (setjmp((c)->b) == 0) { a }
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#define l_jmpbuf jmp_buf
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#else
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/* C++ exceptions */
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#define L_THROW(c) throw(c)
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#define L_TRY(c,a) try { a } catch(...) \
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{ if ((c)->status == 0) (c)->status = -1; }
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#define l_jmpbuf int /* dummy variable */
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#endif
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/*
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** macros for thread synchronization inside Lua core machine:
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** all accesses to the global state and to global objects are synchronized.
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** Because threads can read the stack of other threads
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** (when running garbage collection),
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** a thread must also synchronize any write-access to its own stack.
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** Unsynchronized accesses are allowed only when reading its own stack,
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** or when reading immutable fields from global objects
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** (such as string values and udata values).
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*/
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#define lua_lock(L) ((void) 0)
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#define lua_unlock(L) ((void) 0)
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/*
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** this macro allows a thread switch in appropriate places in the Lua
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** core
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*/
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#define lua_threadyield(L) {lua_unlock(L); lua_lock(L);}
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/* allows user-specific initialization on new threads */
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#define lua_userstateopen(l) /* empty */
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#endif
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/* }====================================================== */
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/*
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** {======================================================
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** Library configuration
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** =======================================================
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*/
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#ifdef LUA_LIB
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/* `assert' options */
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/* environment variable that holds the search path for packages */
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#define LUA_PATH "LUA_PATH"
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/* separator of templates in a path */
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#define LUA_PATH_SEP ';'
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/* wild char in each template */
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#define LUA_PATH_MARK "?"
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/* maximum number of captures in pattern-matching */
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#define MAX_CAPTURES 32 /* arbitrary limit */
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/*
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** by default, gcc does not get `tmpname'
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*/
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#ifdef __GNUC__
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#define USE_TMPNAME 0
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#else
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#define USE_TMPNAME 1
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#endif
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#endif
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/* }====================================================== */
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/* Local configuration */
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#undef USE_TMPNAME
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#define USE_TMPNAME 1
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#endif
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