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Member "memcached-1.6.15/vendor/lua/src/lvm.h" (1 Oct 2021, 4429 Bytes) of package /linux/www/memcached-1.6.15.tar.gz:


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    1 /*
    2 ** $Id: lvm.h $
    3 ** Lua virtual machine
    4 ** See Copyright Notice in lua.h
    5 */
    6 
    7 #ifndef lvm_h
    8 #define lvm_h
    9 
   10 
   11 #include "ldo.h"
   12 #include "lobject.h"
   13 #include "ltm.h"
   14 
   15 
   16 #if !defined(LUA_NOCVTN2S)
   17 #define cvt2str(o)  ttisnumber(o)
   18 #else
   19 #define cvt2str(o)  0   /* no conversion from numbers to strings */
   20 #endif
   21 
   22 
   23 #if !defined(LUA_NOCVTS2N)
   24 #define cvt2num(o)  ttisstring(o)
   25 #else
   26 #define cvt2num(o)  0   /* no conversion from strings to numbers */
   27 #endif
   28 
   29 
   30 /*
   31 ** You can define LUA_FLOORN2I if you want to convert floats to integers
   32 ** by flooring them (instead of raising an error if they are not
   33 ** integral values)
   34 */
   35 #if !defined(LUA_FLOORN2I)
   36 #define LUA_FLOORN2I        F2Ieq
   37 #endif
   38 
   39 
   40 /*
   41 ** Rounding modes for float->integer coercion
   42  */
   43 typedef enum {
   44   F2Ieq,     /* no rounding; accepts only integral values */
   45   F2Ifloor,  /* takes the floor of the number */
   46   F2Iceil    /* takes the ceil of the number */
   47 } F2Imod;
   48 
   49 
   50 /* convert an object to a float (including string coercion) */
   51 #define tonumber(o,n) \
   52     (ttisfloat(o) ? (*(n) = fltvalue(o), 1) : luaV_tonumber_(o,n))
   53 
   54 
   55 /* convert an object to a float (without string coercion) */
   56 #define tonumberns(o,n) \
   57     (ttisfloat(o) ? ((n) = fltvalue(o), 1) : \
   58     (ttisinteger(o) ? ((n) = cast_num(ivalue(o)), 1) : 0))
   59 
   60 
   61 /* convert an object to an integer (including string coercion) */
   62 #define tointeger(o,i) \
   63   (l_likely(ttisinteger(o)) ? (*(i) = ivalue(o), 1) \
   64                           : luaV_tointeger(o,i,LUA_FLOORN2I))
   65 
   66 
   67 /* convert an object to an integer (without string coercion) */
   68 #define tointegerns(o,i) \
   69   (l_likely(ttisinteger(o)) ? (*(i) = ivalue(o), 1) \
   70                           : luaV_tointegerns(o,i,LUA_FLOORN2I))
   71 
   72 
   73 #define intop(op,v1,v2) l_castU2S(l_castS2U(v1) op l_castS2U(v2))
   74 
   75 #define luaV_rawequalobj(t1,t2)     luaV_equalobj(NULL,t1,t2)
   76 
   77 
   78 /*
   79 ** fast track for 'gettable': if 't' is a table and 't[k]' is present,
   80 ** return 1 with 'slot' pointing to 't[k]' (position of final result).
   81 ** Otherwise, return 0 (meaning it will have to check metamethod)
   82 ** with 'slot' pointing to an empty 't[k]' (if 't' is a table) or NULL
   83 ** (otherwise). 'f' is the raw get function to use.
   84 */
   85 #define luaV_fastget(L,t,k,slot,f) \
   86   (!ttistable(t)  \
   87    ? (slot = NULL, 0)  /* not a table; 'slot' is NULL and result is 0 */  \
   88    : (slot = f(hvalue(t), k),  /* else, do raw access */  \
   89       !isempty(slot)))  /* result not empty? */
   90 
   91 
   92 /*
   93 ** Special case of 'luaV_fastget' for integers, inlining the fast case
   94 ** of 'luaH_getint'.
   95 */
   96 #define luaV_fastgeti(L,t,k,slot) \
   97   (!ttistable(t)  \
   98    ? (slot = NULL, 0)  /* not a table; 'slot' is NULL and result is 0 */  \
   99    : (slot = (l_castS2U(k) - 1u < hvalue(t)->alimit) \
  100               ? &hvalue(t)->array[k - 1] : luaH_getint(hvalue(t), k), \
  101       !isempty(slot)))  /* result not empty? */
  102 
  103 
  104 /*
  105 ** Finish a fast set operation (when fast get succeeds). In that case,
  106 ** 'slot' points to the place to put the value.
  107 */
  108 #define luaV_finishfastset(L,t,slot,v) \
  109     { setobj2t(L, cast(TValue *,slot), v); \
  110       luaC_barrierback(L, gcvalue(t), v); }
  111 
  112 
  113 
  114 
  115 LUAI_FUNC int luaV_equalobj (lua_State *L, const TValue *t1, const TValue *t2);
  116 LUAI_FUNC int luaV_lessthan (lua_State *L, const TValue *l, const TValue *r);
  117 LUAI_FUNC int luaV_lessequal (lua_State *L, const TValue *l, const TValue *r);
  118 LUAI_FUNC int luaV_tonumber_ (const TValue *obj, lua_Number *n);
  119 LUAI_FUNC int luaV_tointeger (const TValue *obj, lua_Integer *p, F2Imod mode);
  120 LUAI_FUNC int luaV_tointegerns (const TValue *obj, lua_Integer *p,
  121                                 F2Imod mode);
  122 LUAI_FUNC int luaV_flttointeger (lua_Number n, lua_Integer *p, F2Imod mode);
  123 LUAI_FUNC void luaV_finishget (lua_State *L, const TValue *t, TValue *key,
  124                                StkId val, const TValue *slot);
  125 LUAI_FUNC void luaV_finishset (lua_State *L, const TValue *t, TValue *key,
  126                                TValue *val, const TValue *slot);
  127 LUAI_FUNC void luaV_finishOp (lua_State *L);
  128 LUAI_FUNC void luaV_execute (lua_State *L, CallInfo *ci);
  129 LUAI_FUNC void luaV_concat (lua_State *L, int total);
  130 LUAI_FUNC lua_Integer luaV_idiv (lua_State *L, lua_Integer x, lua_Integer y);
  131 LUAI_FUNC lua_Integer luaV_mod (lua_State *L, lua_Integer x, lua_Integer y);
  132 LUAI_FUNC lua_Number luaV_modf (lua_State *L, lua_Number x, lua_Number y);
  133 LUAI_FUNC lua_Integer luaV_shiftl (lua_Integer x, lua_Integer y);
  134 LUAI_FUNC void luaV_objlen (lua_State *L, StkId ra, const TValue *rb);
  135 
  136 #endif