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new macro 'lua_pointer2str' to encapsulate use of 'l_sprintf' inside 

the kernel
This commit is contained in:
Roberto Ierusalimschy 2017-04-19 13:34:35 -03:00
parent 9e1f1b1f62
commit a45945b6d5
2 changed files with 11 additions and 3 deletions
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5
lobject.c
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@ -1,5 +1,5 @@
/*
** $Id: lobject.c,v 2.112 2016/06/27 13:15:08 roberto Exp roberto $
** $Id: lobject.c,v 2.113 2016/12/22 13:08:50 roberto Exp roberto $
** Some generic functions over Lua objects
** See Copyright Notice in lua.h
*/
@ -435,7 +435,8 @@ const char *luaO_pushvfstring (lua_State *L, const char *fmt, va_list argp) {
}
case 'p': { /* a pointer */
char buff[4*sizeof(void *) + 8]; /* should be enough space for a '%p' */
int l = l_sprintf(buff, sizeof(buff), "%p", va_arg(argp, void *));
void *p = va_arg(argp, void *);
int l = lua_pointer2str(buff, sizeof(buff), p);
pushstr(L, buff, l);
break;
}

9
luaconf.h
View File

@ -1,5 +1,5 @@
/*
** $Id: luaconf.h,v 1.258 2016/12/20 18:37:00 roberto Exp roberto $
** $Id: luaconf.h,v 1.259 2016/12/22 13:08:50 roberto Exp roberto $
** Configuration file for Lua
** See Copyright Notice in lua.h
*/
@ -620,6 +620,13 @@
#endif
/*
@@ lua_pointer2str converts a pointer to a readable string in a
** non-specified way.
*/
#define lua_pointer2str(buff,sz,p) l_sprintf(buff,sz,"%p",p)
/*
@@ lua_number2strx converts a float to an hexadecimal numeric string.
** In C99, 'sprintf' (with format specifiers '%a'/'%A') does that.