mirror of
https://gitcode.com/JianFeeeee/LuaCangjia_api.git
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vendor: 引入 Lua 4.0.1 官方源码 + 移植评估文档 (lua_4.0 分支)
- Lua 4.0 是首个引入 lua_State* 的版本, 但 API 与 5.x 代际差异大 - 桥接层适配要点与工作量评估见 doc/ADAPTATION-lua40.md - 本分支暂不承诺可编译, 后续按需移植
This commit is contained in:
JianFeeeee
@ -1,6 +1,6 @@
|
||||
/*
|
||||
** $Id: llimits.h $
|
||||
** Limits, basic types, and some other 'installation-dependent' definitions
|
||||
** $Id: llimits.h,v 1.19 2000/10/26 12:47:05 roberto Exp $
|
||||
** Limits, basic types, and some other "installation-dependent" definitions
|
||||
** See Copyright Notice in lua.h
|
||||
*/
|
||||
|
||||
@ -12,346 +12,193 @@
|
||||
#include <stddef.h>
|
||||
|
||||
|
||||
#include "lua.h"
|
||||
|
||||
|
||||
#define l_numbits(t) cast_int(sizeof(t) * CHAR_BIT)
|
||||
|
||||
/*
|
||||
** 'l_mem' is a signed integer big enough to count the total memory
|
||||
** used by Lua. (It is signed due to the use of debt in several
|
||||
** computations.) 'lu_mem' is a corresponding unsigned type. Usually,
|
||||
** 'ptrdiff_t' should work, but we use 'long' for 16-bit machines.
|
||||
** try to find number of bits in an integer
|
||||
*/
|
||||
#if defined(LUAI_MEM) /* { external definitions? */
|
||||
typedef LUAI_MEM l_mem;
|
||||
typedef LUAI_UMEM lu_mem;
|
||||
#elif LUAI_IS32INT /* }{ */
|
||||
typedef ptrdiff_t l_mem;
|
||||
typedef size_t lu_mem;
|
||||
#else /* 16-bit ints */ /* }{ */
|
||||
typedef long l_mem;
|
||||
typedef unsigned long lu_mem;
|
||||
#endif /* } */
|
||||
|
||||
#define MAX_LMEM \
|
||||
cast(l_mem, (cast(lu_mem, 1) << (l_numbits(l_mem) - 1)) - 1)
|
||||
|
||||
|
||||
/* chars used as small naturals (so that 'char' is reserved for characters) */
|
||||
typedef unsigned char lu_byte;
|
||||
typedef signed char ls_byte;
|
||||
|
||||
|
||||
/* Type for thread status/error codes */
|
||||
typedef lu_byte TStatus;
|
||||
|
||||
/* The C API still uses 'int' for status/error codes */
|
||||
#define APIstatus(st) cast_int(st)
|
||||
|
||||
/* maximum value for size_t */
|
||||
#define MAX_SIZET ((size_t)(~(size_t)0))
|
||||
|
||||
/*
|
||||
** Maximum size for strings and userdata visible for Lua; should be
|
||||
** representable as a lua_Integer and as a size_t.
|
||||
*/
|
||||
#define MAX_SIZE (sizeof(size_t) < sizeof(lua_Integer) ? MAX_SIZET \
|
||||
: cast_sizet(LUA_MAXINTEGER))
|
||||
|
||||
/*
|
||||
** test whether an unsigned value is a power of 2 (or zero)
|
||||
*/
|
||||
#define ispow2(x) (((x) & ((x) - 1)) == 0)
|
||||
|
||||
|
||||
/* number of chars of a literal string without the ending \0 */
|
||||
#define LL(x) (sizeof(x)/sizeof(char) - 1)
|
||||
|
||||
|
||||
/*
|
||||
** conversion of pointer to unsigned integer: this is for hashing only;
|
||||
** there is no problem if the integer cannot hold the whole pointer
|
||||
** value. (In strict ISO C this may cause undefined behavior, but no
|
||||
** actual machine seems to bother.)
|
||||
*/
|
||||
#if !defined(LUA_USE_C89) && defined(__STDC_VERSION__) && \
|
||||
__STDC_VERSION__ >= 199901L
|
||||
#include <stdint.h>
|
||||
#if defined(UINTPTR_MAX) /* even in C99 this type is optional */
|
||||
#define L_P2I uintptr_t
|
||||
#else /* no 'intptr'? */
|
||||
#define L_P2I uintmax_t /* use the largest available integer */
|
||||
#endif
|
||||
#else /* C89 option */
|
||||
#define L_P2I size_t
|
||||
#endif
|
||||
|
||||
#define point2uint(p) cast_uint((L_P2I)(p) & UINT_MAX)
|
||||
|
||||
|
||||
|
||||
/* types of 'usual argument conversions' for lua_Number and lua_Integer */
|
||||
typedef LUAI_UACNUMBER l_uacNumber;
|
||||
typedef LUAI_UACINT l_uacInt;
|
||||
|
||||
|
||||
/*
|
||||
** Internal assertions for in-house debugging
|
||||
*/
|
||||
#if defined LUAI_ASSERT
|
||||
#undef NDEBUG
|
||||
#include <assert.h>
|
||||
#define lua_assert(c) assert(c)
|
||||
#define assert_code(c) c
|
||||
#endif
|
||||
|
||||
#if defined(lua_assert)
|
||||
#ifndef BITS_INT
|
||||
/* avoid overflows in comparison */
|
||||
#if INT_MAX-20 < 32760
|
||||
#define BITS_INT 16
|
||||
#else
|
||||
#define lua_assert(c) ((void)0)
|
||||
#define assert_code(c) ((void)0)
|
||||
#endif
|
||||
|
||||
#define check_exp(c,e) (lua_assert(c), (e))
|
||||
/* to avoid problems with conditions too long */
|
||||
#define lua_longassert(c) assert_code((c) ? (void)0 : lua_assert(0))
|
||||
|
||||
|
||||
/* macro to avoid warnings about unused variables */
|
||||
#if !defined(UNUSED)
|
||||
#define UNUSED(x) ((void)(x))
|
||||
#endif
|
||||
|
||||
|
||||
/* type casts (a macro highlights casts in the code) */
|
||||
#define cast(t, exp) ((t)(exp))
|
||||
|
||||
#define cast_void(i) cast(void, (i))
|
||||
#define cast_voidp(i) cast(void *, (i))
|
||||
#define cast_num(i) cast(lua_Number, (i))
|
||||
#define cast_int(i) cast(int, (i))
|
||||
#define cast_short(i) cast(short, (i))
|
||||
#define cast_uint(i) cast(unsigned int, (i))
|
||||
#define cast_byte(i) cast(lu_byte, (i))
|
||||
#define cast_uchar(i) cast(unsigned char, (i))
|
||||
#define cast_char(i) cast(char, (i))
|
||||
#define cast_charp(i) cast(char *, (i))
|
||||
#define cast_sizet(i) cast(size_t, (i))
|
||||
#define cast_Integer(i) cast(lua_Integer, (i))
|
||||
#define cast_Inst(i) cast(Instruction, (i))
|
||||
|
||||
|
||||
/* cast a signed lua_Integer to lua_Unsigned */
|
||||
#if !defined(l_castS2U)
|
||||
#define l_castS2U(i) ((lua_Unsigned)(i))
|
||||
#endif
|
||||
|
||||
/*
|
||||
** cast a lua_Unsigned to a signed lua_Integer; this cast is
|
||||
** not strict ISO C, but two-complement architectures should
|
||||
** work fine.
|
||||
*/
|
||||
#if !defined(l_castU2S)
|
||||
#define l_castU2S(i) ((lua_Integer)(i))
|
||||
#endif
|
||||
|
||||
/*
|
||||
** cast a size_t to lua_Integer: These casts are always valid for
|
||||
** sizes of Lua objects (see MAX_SIZE)
|
||||
*/
|
||||
#define cast_st2S(sz) ((lua_Integer)(sz))
|
||||
|
||||
/* Cast a ptrdiff_t to size_t, when it is known that the minuend
|
||||
** comes from the subtrahend (the base)
|
||||
*/
|
||||
#define ct_diff2sz(df) ((size_t)(df))
|
||||
|
||||
/* ptrdiff_t to lua_Integer */
|
||||
#define ct_diff2S(df) cast_st2S(ct_diff2sz(df))
|
||||
|
||||
/*
|
||||
** Special type equivalent to '(void*)' for functions (to suppress some
|
||||
** warnings when converting function pointers)
|
||||
*/
|
||||
typedef void (*voidf)(void);
|
||||
|
||||
/*
|
||||
** Macro to convert pointer-to-void* to pointer-to-function. This cast
|
||||
** is undefined according to ISO C, but POSIX assumes that it works.
|
||||
** (The '__extension__' in gnu compilers is only to avoid warnings.)
|
||||
*/
|
||||
#if defined(__GNUC__)
|
||||
#define cast_func(p) (__extension__ (voidf)(p))
|
||||
#if INT_MAX > 2147483640L
|
||||
/* machine has at least 32 bits */
|
||||
#define BITS_INT 32
|
||||
#else
|
||||
#define cast_func(p) ((voidf)(p))
|
||||
#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 double
|
||||
#endif
|
||||
|
||||
typedef LUA_NUM_TYPE Number;
|
||||
|
||||
/* function to convert a Number to a string */
|
||||
#define NUMBER_FMT "%.16g" /* 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) strtod((s), (p))
|
||||
|
||||
|
||||
|
||||
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
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** non-return type
|
||||
*/
|
||||
#if !defined(l_noret)
|
||||
/* type to ensure maximum alignment */
|
||||
union L_Umaxalign { double d; char *s; long l; };
|
||||
|
||||
#if defined(__GNUC__)
|
||||
#define l_noret void __attribute__((noreturn))
|
||||
#elif defined(_MSC_VER) && _MSC_VER >= 1200
|
||||
#define l_noret void __declspec(noreturn)
|
||||
|
||||
|
||||
/*
|
||||
** 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 l_noret void
|
||||
#define MAXARG_U MAX_INT
|
||||
#define MAXARG_S MAX_INT
|
||||
#endif
|
||||
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
** Inline functions
|
||||
*/
|
||||
#if !defined(LUA_USE_C89)
|
||||
#define l_inline inline
|
||||
#elif defined(__GNUC__)
|
||||
#define l_inline __inline__
|
||||
#if SIZE_A < BITS_INT-1
|
||||
#define MAXARG_A ((1<<SIZE_A)-1)
|
||||
#else
|
||||
#define l_inline /* empty */
|
||||
#define MAXARG_A MAX_INT
|
||||
#endif
|
||||
|
||||
#define l_sinline static l_inline
|
||||
|
||||
|
||||
/*
|
||||
** An unsigned with (at least) 4 bytes
|
||||
*/
|
||||
#if LUAI_IS32INT
|
||||
typedef unsigned int l_uint32;
|
||||
#if SIZE_B < BITS_INT-1
|
||||
#define MAXARG_B ((1<<SIZE_B)-1)
|
||||
#else
|
||||
typedef unsigned long l_uint32;
|
||||
#define MAXARG_B MAX_INT
|
||||
#endif
|
||||
|
||||
|
||||
/*
|
||||
** The luai_num* macros define the primitive operations over numbers.
|
||||
*/
|
||||
|
||||
/* floor division (defined as 'floor(a/b)') */
|
||||
#if !defined(luai_numidiv)
|
||||
#define luai_numidiv(L,a,b) l_floor(luai_numdiv(L,a,b))
|
||||
/* maximum stack size in a function */
|
||||
#ifndef MAXSTACK
|
||||
#define MAXSTACK 250
|
||||
#endif
|
||||
|
||||
/* float division */
|
||||
#if !defined(luai_numdiv)
|
||||
#define luai_numdiv(L,a,b) ((void)L, (a)/(b))
|
||||
#endif
|
||||
|
||||
/*
|
||||
** modulo: defined as 'a - floor(a/b)*b'; the direct computation
|
||||
** using this definition has several problems with rounding errors,
|
||||
** so it is better to use 'fmod'. 'fmod' gives the result of
|
||||
** 'a - trunc(a/b)*b', and therefore must be corrected when
|
||||
** 'trunc(a/b) ~= floor(a/b)'. That happens when the division has a
|
||||
** non-integer negative result: non-integer result is equivalent to
|
||||
** a non-zero remainder 'm'; negative result is equivalent to 'a' and
|
||||
** 'b' with different signs, or 'm' and 'b' with different signs
|
||||
** (as the result 'm' of 'fmod' has the same sign of 'a').
|
||||
*/
|
||||
#if !defined(luai_nummod)
|
||||
#define luai_nummod(L,a,b,m) \
|
||||
{ (void)L; (m) = l_mathop(fmod)(a,b); \
|
||||
if (((m) > 0) ? (b) < 0 : ((m) < 0 && (b) > 0)) (m) += (b); }
|
||||
#endif
|
||||
|
||||
/* exponentiation */
|
||||
#if !defined(luai_numpow)
|
||||
#define luai_numpow(L,a,b) \
|
||||
((void)L, (b == 2) ? (a)*(a) : l_mathop(pow)(a,b))
|
||||
#endif
|
||||
|
||||
/* the others are quite standard operations */
|
||||
#if !defined(luai_numadd)
|
||||
#define luai_numadd(L,a,b) ((void)L, (a)+(b))
|
||||
#define luai_numsub(L,a,b) ((void)L, (a)-(b))
|
||||
#define luai_nummul(L,a,b) ((void)L, (a)*(b))
|
||||
#define luai_numunm(L,a) ((void)L, -(a))
|
||||
#define luai_numeq(a,b) ((a)==(b))
|
||||
#define luai_numlt(a,b) ((a)<(b))
|
||||
#define luai_numle(a,b) ((a)<=(b))
|
||||
#define luai_numgt(a,b) ((a)>(b))
|
||||
#define luai_numge(a,b) ((a)>=(b))
|
||||
#define luai_numisnan(a) (!luai_numeq((a), (a)))
|
||||
#if MAXSTACK > MAXARG_B
|
||||
#undef MAXSTACK
|
||||
#define MAXSTACK MAXARG_B
|
||||
#endif
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** lua_numbertointeger converts a float number with an integral value
|
||||
** to an integer, or returns 0 if the float is not within the range of
|
||||
** a lua_Integer. (The range comparisons are tricky because of
|
||||
** rounding. The tests here assume a two-complement representation,
|
||||
** where MININTEGER always has an exact representation as a float;
|
||||
** MAXINTEGER may not have one, and therefore its conversion to float
|
||||
** may have an ill-defined value.)
|
||||
*/
|
||||
#define lua_numbertointeger(n,p) \
|
||||
((n) >= (LUA_NUMBER)(LUA_MININTEGER) && \
|
||||
(n) < -(LUA_NUMBER)(LUA_MININTEGER) && \
|
||||
(*(p) = (LUA_INTEGER)(n), 1))
|
||||
|
||||
|
||||
|
||||
/*
|
||||
** LUAI_FUNC is a mark for all extern functions that are not to be
|
||||
** exported to outside modules.
|
||||
** LUAI_DDEF and LUAI_DDEC are marks for all extern (const) variables,
|
||||
** none of which to be exported to outside modules (LUAI_DDEF for
|
||||
** definitions and LUAI_DDEC for declarations).
|
||||
** Elf and MACH/gcc (versions 3.2 and later) mark them as "hidden" to
|
||||
** optimize access when Lua is compiled as a shared library. Not all elf
|
||||
** targets support this attribute. Unfortunately, gcc does not offer
|
||||
** a way to check whether the target offers that support, and those
|
||||
** without support give a warning about it. To avoid these warnings,
|
||||
** change to the default definition.
|
||||
*/
|
||||
#if !defined(LUAI_FUNC)
|
||||
|
||||
#if defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \
|
||||
(defined(__ELF__) || defined(__MACH__))
|
||||
#define LUAI_FUNC __attribute__((visibility("internal"))) extern
|
||||
#else
|
||||
#define LUAI_FUNC extern
|
||||
/* maximum number of local variables */
|
||||
#ifndef MAXLOCALS
|
||||
#define MAXLOCALS 200 /* arbitrary limit (<MAXSTACK) */
|
||||
#endif
|
||||
|
||||
#define LUAI_DDEC(dec) LUAI_FUNC dec
|
||||
#define LUAI_DDEF /* empty */
|
||||
|
||||
#if MAXLOCALS>=MAXSTACK
|
||||
#undef MAXLOCALS
|
||||
#define MAXLOCALS (MAXSTACK-1)
|
||||
#endif
|
||||
|
||||
|
||||
/* Give these macros simpler names for internal use */
|
||||
#define l_likely(x) luai_likely(x)
|
||||
#define l_unlikely(x) luai_unlikely(x)
|
||||
|
||||
/*
|
||||
** {==================================================================
|
||||
** "Abstraction Layer" for basic report of messages and errors
|
||||
** ===================================================================
|
||||
*/
|
||||
|
||||
/* print a string */
|
||||
#if !defined(lua_writestring)
|
||||
#define lua_writestring(s,l) fwrite((s), sizeof(char), (l), stdout)
|
||||
/* 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
|
||||
|
||||
/* print a newline and flush the output */
|
||||
#if !defined(lua_writeline)
|
||||
#define lua_writeline() (lua_writestring("\n", 1), fflush(stdout))
|
||||
|
||||
/* 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
|
||||
|
||||
/* print an error message */
|
||||
#if !defined(lua_writestringerror)
|
||||
#define lua_writestringerror(s,p) \
|
||||
(fprintf(stderr, (s), (p)), fflush(stderr))
|
||||
|
||||
/* 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
|
||||
|
||||
Reference in New Issue
Block a user