Import tome-2.3.5.

1 files changed, 204 insertions, 0 deletions

diff --git a/src/lua/llimits.h b/src/lua/llimits.h
new file mode 100644
index 00000000..4b124503
--- /dev/null
+++ b/src/lua/llimits.h
@@ -0,0 +1,204 @@
+/*
+** $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