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Diffstat (limited to 'src/lua/llimits.h')
| -rw-r--r-- | src/lua/llimits.h | 204 |
1 files changed, 0 insertions, 204 deletions
diff --git a/src/lua/llimits.h b/src/lua/llimits.h deleted file mode 100644 index 4b124503..00000000 --- a/src/lua/llimits.h +++ /dev/null @@ -1,204 +0,0 @@ -/* -** $Id: llimits.h,v 1.2 2001/11/26 23:00:24 darkgod Exp $ -** Limits, basic types, and some other "installation-dependent" definitions -** See Copyright Notice in lua.h -*/ - -#ifndef llimits_h -#define llimits_h - - -#include <limits.h> -#include <stddef.h> - - - -/* -** try to find number of bits in an integer -*/ -#ifndef BITS_INT -/* avoid overflows in comparison */ -#if INT_MAX-20 < 32760 -#define BITS_INT 16 -#else -#if INT_MAX > 2147483640L -/* machine has at least 32 bits */ -#define BITS_INT 32 -#else -#error "you must define BITS_INT with number of bits in an integer" -#endif -#endif -#endif - - -/* -** Define the type `number' of Lua -** GREP LUA_NUMBER to change that -*/ -#ifndef LUA_NUM_TYPE -#define LUA_NUM_TYPE long -#endif - -typedef LUA_NUM_TYPE Number; - -/* function to convert a Number to a string */ -#define NUMBER_FMT "%ld" /* LUA_NUMBER */ -#define lua_number2str(s,n) sprintf((s), NUMBER_FMT, (n)) - -/* function to convert a string to a Number */ -#define lua_str2number(s,p) strtol((s), (p), 10) - - - -typedef unsigned long lint32; /* unsigned int with at least 32 bits */ - - -#define MAX_SIZET ((size_t)(~(size_t)0)-2) - - -#define MAX_INT (INT_MAX-2) /* maximum value of an int (-2 for safety) */ - -/* -** conversion of pointer to int (for hashing only) -** (the shift removes bits that are usually 0 because of alignment) -*/ -#define IntPoint(p) (((unsigned long)(p)) >> 3) - - - -#define MINPOWER2 4 /* minimum size for "growing" vectors */ - - - -#ifndef DEFAULT_STACK_SIZE -#define DEFAULT_STACK_SIZE 1024 -#endif - - - -/* type to ensure maximum alignment */ -union L_Umaxalign { long d; char *s; long l; }; - - - -/* -** type for virtual-machine instructions -** must be an unsigned with (at least) 4 bytes (see details in lopcodes.h) -** For a very small machine, you may change that to 2 bytes (and adjust -** the following limits accordingly) -*/ -typedef unsigned long Instruction; - - -/* -** size and position of opcode arguments. -** For an instruction with 2 bytes, size is 16, and size_b can be 5 -** (accordingly, size_u will be 10, and size_a will be 5) -*/ -#define SIZE_INSTRUCTION 32 -#define SIZE_B 9 - -#define SIZE_OP 6 -#define SIZE_U (SIZE_INSTRUCTION-SIZE_OP) -#define POS_U SIZE_OP -#define POS_B SIZE_OP -#define SIZE_A (SIZE_INSTRUCTION-(SIZE_OP+SIZE_B)) -#define POS_A (SIZE_OP+SIZE_B) - - -/* -** limits for opcode arguments. -** we use (signed) int to manipulate most arguments, -** so they must fit in BITS_INT-1 bits (-1 for sign) -*/ -#if SIZE_U < BITS_INT-1 -#define MAXARG_U ((1<<SIZE_U)-1) -#define MAXARG_S (MAXARG_U>>1) /* `S' is signed */ -#else -#define MAXARG_U MAX_INT -#define MAXARG_S MAX_INT -#endif - -#if SIZE_A < BITS_INT-1 -#define MAXARG_A ((1<<SIZE_A)-1) -#else -#define MAXARG_A MAX_INT -#endif - -#if SIZE_B < BITS_INT-1 -#define MAXARG_B ((1<<SIZE_B)-1) -#else -#define MAXARG_B MAX_INT -#endif - - -/* maximum stack size in a function */ -#ifndef MAXSTACK -#define MAXSTACK 250 -#endif - -#if MAXSTACK > MAXARG_B -#undef MAXSTACK -#define MAXSTACK MAXARG_B -#endif - - -/* maximum number of local variables */ -#ifndef MAXLOCALS -#define MAXLOCALS 200 /* arbitrary limit (<MAXSTACK) */ -#endif -#if MAXLOCALS>=MAXSTACK -#undef MAXLOCALS -#define MAXLOCALS (MAXSTACK-1) -#endif - - -/* maximum number of upvalues */ -#ifndef MAXUPVALUES -#define MAXUPVALUES 32 /* arbitrary limit (<=MAXARG_B) */ -#endif -#if MAXUPVALUES>MAXARG_B -#undef MAXUPVALUES -#define MAXUPVALUES MAXARG_B -#endif - - -/* maximum number of variables in the left side of an assignment */ -#ifndef MAXVARSLH -#define MAXVARSLH 100 /* arbitrary limit (<MULT_RET) */ -#endif -#if MAXVARSLH>=MULT_RET -#undef MAXVARSLH -#define MAXVARSLH (MULT_RET-1) -#endif - - -/* maximum number of parameters in a function */ -#ifndef MAXPARAMS -#define MAXPARAMS 100 /* arbitrary limit (<MAXLOCALS) */ -#endif -#if MAXPARAMS>=MAXLOCALS -#undef MAXPARAMS -#define MAXPARAMS (MAXLOCALS-1) -#endif - - -/* number of list items to accumulate before a SETLIST instruction */ -#define LFIELDS_PER_FLUSH 64 -#if LFIELDS_PER_FLUSH>(MAXSTACK/4) -#undef LFIELDS_PER_FLUSH -#define LFIELDS_PER_FLUSH (MAXSTACK/4) -#endif - -/* number of record items to accumulate before a SETMAP instruction */ -/* (each item counts 2 elements on the stack: an index and a value) */ -#define RFIELDS_PER_FLUSH (LFIELDS_PER_FLUSH/2) - - -/* maximum lookback to find a real constant (for code generation) */ -#ifndef LOOKBACKNUMS -#define LOOKBACKNUMS 20 /* arbitrary constant */ -#endif - - -#endif |