From fad57bfa008523c3568b613989a6a3f87f3cb83b Mon Sep 17 00:00:00 2001 From: Roberto Ierusalimschy Date: Fri, 16 Dec 1994 13:53:57 -0200 Subject: new constant LUA_NOOBJECT. 'lua_error' never returns --- iolib.c | 18 +++++----- mathlib.c | 114 +++++++++++++++++++++++++++++++------------------------------- strlib.c | 16 ++++----- 3 files changed, 74 insertions(+), 74 deletions(-) diff --git a/iolib.c b/iolib.c index 13f9a31f..35b1dea2 100644 --- a/iolib.c +++ b/iolib.c @@ -3,7 +3,7 @@ ** Input/output library to LUA */ -char *rcs_iolib="$Id: iolib.c,v 1.16 1994/11/16 17:38:08 roberto Stab roberto $"; +char *rcs_iolib="$Id: iolib.c,v 1.17 1994/12/13 15:55:41 roberto Exp roberto $"; #include #include @@ -29,7 +29,7 @@ static FILE *in=stdin, *out=stdout; static void io_readfrom (void) { lua_Object o = lua_getparam (1); - if (o == NULL) /* restore standart input */ + if (o == LUA_NOOBJECT) /* restore standart input */ { if (in != stdin) { @@ -74,7 +74,7 @@ static void io_readfrom (void) static void io_writeto (void) { lua_Object o = lua_getparam (1); - if (o == NULL) /* restore standart output */ + if (o == LUA_NOOBJECT) /* restore standart output */ { if (out != stdout) { @@ -120,7 +120,7 @@ static void io_writeto (void) static void io_appendto (void) { lua_Object o = lua_getparam (1); - if (o == NULL) /* restore standart output */ + if (o == LUA_NOOBJECT) /* restore standart output */ { if (out != stdout) { @@ -177,7 +177,7 @@ static void io_appendto (void) static void io_read (void) { lua_Object o = lua_getparam (1); - if (o == NULL || !lua_isstring(o)) /* free format */ + if (!lua_isstring(o)) /* free format */ { int c; char s[256]; @@ -442,12 +442,12 @@ static void io_write (void) { lua_Object o1 = lua_getparam (1); lua_Object o2 = lua_getparam (2); - if (o1 == NULL) /* new line */ + if (o1 == LUA_NOOBJECT) /* new line */ { fprintf (out, "\n"); lua_pushnumber(1); } - else if (o2 == NULL) /* free format */ + else if (o2 == LUA_NOOBJECT) /* free format */ { int status=0; if (lua_isnumber(o1)) @@ -475,7 +475,7 @@ static void io_write (void) static void io_execute (void) { lua_Object o = lua_getparam (1); - if (o == NULL || !lua_isstring (o)) + if (!lua_isstring (o)) { lua_error ("incorrect argument to function 'execute`"); lua_pushnumber (0); @@ -495,7 +495,7 @@ static void io_execute (void) static void io_remove (void) { lua_Object o = lua_getparam (1); - if (o == NULL || !lua_isstring (o)) + if (!lua_isstring (o)) { lua_error ("incorrect argument to function 'execute`"); lua_pushnumber (0); diff --git a/mathlib.c b/mathlib.c index 4042834d..71e54eba 100644 --- a/mathlib.c +++ b/mathlib.c @@ -3,7 +3,7 @@ ** Mathematics library to LUA */ -char *rcs_mathlib="$Id: mathlib.c,v 1.5 1994/11/17 19:43:34 roberto Exp roberto $"; +char *rcs_mathlib="$Id: mathlib.c,v 1.6 1994/11/18 19:46:21 roberto Stab roberto $"; #include /* NULL */ #include @@ -19,10 +19,10 @@ static void math_abs (void) { double d; lua_Object o = lua_getparam (1); - if (o == NULL) - { lua_error ("too few arguments to function `abs'"); return; } + if (o == LUA_NOOBJECT) + lua_error ("too few arguments to function `abs'"); if (!lua_isnumber(o)) - { lua_error ("incorrect arguments to function `abs'"); return; } + lua_error ("incorrect arguments to function `abs'"); d = lua_getnumber(o); if (d < 0) d = -d; lua_pushnumber (d); @@ -33,10 +33,10 @@ static void math_sin (void) { double d; lua_Object o = lua_getparam (1); - if (o == NULL) - { lua_error ("too few arguments to function `sin'"); return; } + if (o == LUA_NOOBJECT) + lua_error ("too few arguments to function `sin'"); if (!lua_isnumber(o)) - { lua_error ("incorrect arguments to function `sin'"); return; } + lua_error ("incorrect arguments to function `sin'"); d = lua_getnumber(o); lua_pushnumber (sin(TORAD(d))); } @@ -47,10 +47,10 @@ static void math_cos (void) { double d; lua_Object o = lua_getparam (1); - if (o == NULL) - { lua_error ("too few arguments to function `cos'"); return; } + if (o == LUA_NOOBJECT) + lua_error ("too few arguments to function `cos'"); if (!lua_isnumber(o)) - { lua_error ("incorrect arguments to function `cos'"); return; } + lua_error ("incorrect arguments to function `cos'"); d = lua_getnumber(o); lua_pushnumber (cos(TORAD(d))); } @@ -61,10 +61,10 @@ static void math_tan (void) { double d; lua_Object o = lua_getparam (1); - if (o == NULL) - { lua_error ("too few arguments to function `tan'"); return; } + if (o == LUA_NOOBJECT) + lua_error ("too few arguments to function `tan'"); if (!lua_isnumber(o)) - { lua_error ("incorrect arguments to function `tan'"); return; } + lua_error ("incorrect arguments to function `tan'"); d = lua_getnumber(o); lua_pushnumber (tan(TORAD(d))); } @@ -74,10 +74,10 @@ static void math_asin (void) { double d; lua_Object o = lua_getparam (1); - if (o == NULL) - { lua_error ("too few arguments to function `asin'"); return; } + if (o == LUA_NOOBJECT) + lua_error ("too few arguments to function `asin'"); if (!lua_isnumber(o)) - { lua_error ("incorrect arguments to function `asin'"); return; } + lua_error ("incorrect arguments to function `asin'"); d = lua_getnumber(o); lua_pushnumber (TODEGREE(asin(d))); } @@ -87,10 +87,10 @@ static void math_acos (void) { double d; lua_Object o = lua_getparam (1); - if (o == NULL) - { lua_error ("too few arguments to function `acos'"); return; } + if (o == LUA_NOOBJECT) + lua_error ("too few arguments to function `acos'"); if (!lua_isnumber(o)) - { lua_error ("incorrect arguments to function `acos'"); return; } + lua_error ("incorrect arguments to function `acos'"); d = lua_getnumber(o); lua_pushnumber (TODEGREE(acos(d))); } @@ -101,10 +101,10 @@ static void math_atan (void) { double d; lua_Object o = lua_getparam (1); - if (o == NULL) - { lua_error ("too few arguments to function `atan'"); return; } + if (o == LUA_NOOBJECT) + lua_error ("too few arguments to function `atan'"); if (!lua_isnumber(o)) - { lua_error ("incorrect arguments to function `atan'"); return; } + lua_error ("incorrect arguments to function `atan'"); d = lua_getnumber(o); lua_pushnumber (TODEGREE(atan(d))); } @@ -114,10 +114,10 @@ static void math_ceil (void) { double d; lua_Object o = lua_getparam (1); - if (o == NULL) - { lua_error ("too few arguments to function `ceil'"); return; } + if (o == LUA_NOOBJECT) + lua_error ("too few arguments to function `ceil'"); if (!lua_isnumber(o)) - { lua_error ("incorrect arguments to function `ceil'"); return; } + lua_error ("incorrect arguments to function `ceil'"); d = lua_getnumber(o); lua_pushnumber (ceil(d)); } @@ -127,10 +127,10 @@ static void math_floor (void) { double d; lua_Object o = lua_getparam (1); - if (o == NULL) - { lua_error ("too few arguments to function `floor'"); return; } + if (o == LUA_NOOBJECT) + lua_error ("too few arguments to function `floor'"); if (!lua_isnumber(o)) - { lua_error ("incorrect arguments to function `floor'"); return; } + lua_error ("incorrect arguments to function `floor'"); d = lua_getnumber(o); lua_pushnumber (floor(d)); } @@ -141,7 +141,7 @@ static void math_mod (void) lua_Object o1 = lua_getparam (1); lua_Object o2 = lua_getparam (2); if (!lua_isnumber(o1) || !lua_isnumber(o2)) - { lua_error ("incorrect arguments to function `mod'"); return; } + lua_error ("incorrect arguments to function `mod'"); d1 = (int) lua_getnumber(o1); d2 = (int) lua_getnumber(o2); lua_pushnumber (d1%d2); @@ -152,10 +152,10 @@ static void math_sqrt (void) { double d; lua_Object o = lua_getparam (1); - if (o == NULL) - { lua_error ("too few arguments to function `sqrt'"); return; } + if (o == LUA_NOOBJECT) + lua_error ("too few arguments to function `sqrt'"); if (!lua_isnumber(o)) - { lua_error ("incorrect arguments to function `sqrt'"); return; } + lua_error ("incorrect arguments to function `sqrt'"); d = lua_getnumber(o); lua_pushnumber (sqrt(d)); } @@ -188,15 +188,15 @@ static void math_min (void) int i=1; double d, dmin; lua_Object o; - if ((o = lua_getparam(i++)) == NULL) - { lua_error ("too few arguments to function `min'"); return; } + if ((o = lua_getparam(i++)) == LUA_NOOBJECT) + lua_error ("too few arguments to function `min'"); if (!lua_isnumber(o)) - { lua_error ("incorrect arguments to function `min'"); return; } + lua_error ("incorrect arguments to function `min'"); dmin = lua_getnumber (o); - while ((o = lua_getparam(i++)) != NULL) + while ((o = lua_getparam(i++)) != LUA_NOOBJECT) { if (!lua_isnumber(o)) - { lua_error ("incorrect arguments to function `min'"); return; } + lua_error ("incorrect arguments to function `min'"); d = lua_getnumber (o); if (d < dmin) dmin = d; } @@ -209,15 +209,15 @@ static void math_max (void) int i=1; double d, dmax; lua_Object o; - if ((o = lua_getparam(i++)) == NULL) - { lua_error ("too few arguments to function `max'"); return; } + if ((o = lua_getparam(i++)) == LUA_NOOBJECT) + lua_error ("too few arguments to function `max'"); if (!lua_isnumber(o)) - { lua_error ("incorrect arguments to function `max'"); return; } + lua_error ("incorrect arguments to function `max'"); dmax = lua_getnumber (o); - while ((o = lua_getparam(i++)) != NULL) + while ((o = lua_getparam(i++)) != LUA_NOOBJECT) { if (!lua_isnumber(o)) - { lua_error ("incorrect arguments to function `max'"); return; } + lua_error ("incorrect arguments to function `max'"); d = lua_getnumber (o); if (d > dmax) dmax = d; } @@ -229,10 +229,10 @@ static void math_log (void) { double d; lua_Object o = lua_getparam (1); - if (o == NULL) - { lua_error ("too few arguments to function `log'"); return; } + if (o == LUA_NOOBJECT) + lua_error ("too few arguments to function `log'"); if (!lua_isnumber(o)) - { lua_error ("incorrect arguments to function `log'"); return; } + lua_error ("incorrect arguments to function `log'"); d = lua_getnumber(o); lua_pushnumber (log(d)); } @@ -242,10 +242,10 @@ static void math_log10 (void) { double d; lua_Object o = lua_getparam (1); - if (o == NULL) - { lua_error ("too few arguments to function `log10'"); return; } + if (o == LUA_NOOBJECT) + lua_error ("too few arguments to function `log10'"); if (!lua_isnumber(o)) - { lua_error ("incorrect arguments to function `log10'"); return; } + lua_error ("incorrect arguments to function `log10'"); d = lua_getnumber(o); lua_pushnumber (log10(d)); } @@ -255,10 +255,10 @@ static void math_exp (void) { double d; lua_Object o = lua_getparam (1); - if (o == NULL) - { lua_error ("too few arguments to function `exp'"); return; } + if (o == LUA_NOOBJECT) + lua_error ("too few arguments to function `exp'"); if (!lua_isnumber(o)) - { lua_error ("incorrect arguments to function `exp'"); return; } + lua_error ("incorrect arguments to function `exp'"); d = lua_getnumber(o); lua_pushnumber (exp(d)); } @@ -267,10 +267,10 @@ static void math_deg (void) { float d; lua_Object o = lua_getparam (1); - if (o == NULL) - { lua_error ("too few arguments to function `deg'"); return; } + if (o == LUA_NOOBJECT) + lua_error ("too few arguments to function `deg'"); if (!lua_isnumber(o)) - { lua_error ("incorrect arguments to function `deg'"); return; } + lua_error ("incorrect arguments to function `deg'"); d = lua_getnumber(o); lua_pushnumber (d*180./PI); } @@ -279,10 +279,10 @@ static void math_rad (void) { float d; lua_Object o = lua_getparam (1); - if (o == NULL) - { lua_error ("too few arguments to function `rad'"); return; } + if (o == LUA_NOOBJECT) + lua_error ("too few arguments to function `rad'"); if (!lua_isnumber(o)) - { lua_error ("incorrect arguments to function `rad'"); return; } + lua_error ("incorrect arguments to function `rad'"); d = lua_getnumber(o); lua_pushnumber (d/180.*PI); } diff --git a/strlib.c b/strlib.c index ef79ac82..68acc218 100644 --- a/strlib.c +++ b/strlib.c @@ -3,7 +3,7 @@ ** String library to LUA */ -char *rcs_strlib="$Id: strlib.c,v 1.5 1994/11/16 17:38:08 roberto Stab $"; +char *rcs_strlib="$Id: strlib.c,v 1.6 1994/12/13 15:54:21 roberto Exp roberto $"; #include #include @@ -23,7 +23,7 @@ static void str_find (void) lua_Object o1 = lua_getparam (1); lua_Object o2 = lua_getparam (2); if (!lua_isstring(o1) || !lua_isstring(o2)) - { lua_error ("incorrect arguments to function `strfind'"); return; } + lua_error ("incorrect arguments to function `strfind'"); s1 = lua_getstring(o1); s2 = lua_getstring(o2); f = strstr(s1,s2); @@ -42,7 +42,7 @@ static void str_len (void) { lua_Object o = lua_getparam (1); if (!lua_isstring(o)) - { lua_error ("incorrect arguments to function `strlen'"); return; } + lua_error ("incorrect arguments to function `strlen'"); lua_pushnumber(strlen(lua_getstring(o))); } @@ -60,9 +60,9 @@ static void str_sub (void) lua_Object o2 = lua_getparam (2); lua_Object o3 = lua_getparam (3); if (!lua_isstring(o1) || !lua_isnumber(o2)) - { lua_error ("incorrect arguments to function `strsub'"); return; } - if (o3 != NULL && !lua_isnumber(o3)) - { lua_error ("incorrect third argument to function `strsub'"); return; } + lua_error ("incorrect arguments to function `strsub'"); + if (o3 != LUA_NOOBJECT && !lua_isnumber(o3)) + lua_error ("incorrect third argument to function `strsub'"); s = lua_copystring(o1); start = lua_getnumber (o2); end = o3 == NULL ? strlen(s) : lua_getnumber (o3); @@ -86,7 +86,7 @@ static void str_lower (void) char *s, *c; lua_Object o = lua_getparam (1); if (!lua_isstring(o)) - { lua_error ("incorrect arguments to function `strlower'"); return; } + lua_error ("incorrect arguments to function `strlower'"); c = s = strdup(lua_getstring(o)); while (*c != 0) { @@ -108,7 +108,7 @@ static void str_upper (void) char *s, *c; lua_Object o = lua_getparam (1); if (!lua_isstring(o)) - { lua_error ("incorrect arguments to function `strlower'"); return; } + lua_error ("incorrect arguments to function `strlower'"); c = s = strdup(lua_getstring(o)); while (*c != 0) { -- cgit v1.2.3-55-g6feb