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More Chip patches (tweaked for _5x). The final one mentioned here
[perl5.git] / handy.h
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a0d0e21e 1/* handy.h
a687059c 2 *
9607fc9c 3 * Copyright (c) 1991-1997, Larry Wall
a687059c 4 *
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5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
8d063cd8 7 *
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8 */
9
85e6fe83 10#if !defined(__STDC__)
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11#ifdef NULL
12#undef NULL
13#endif
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14#ifndef I286
15# define NULL 0
16#else
17# define NULL 0L
18#endif
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19#endif
20
378cc40b 21#define Null(type) ((type)NULL)
8d063cd8 22#define Nullch Null(char*)
760ac839 23#define Nullfp Null(PerlIO*)
79072805 24#define Nullsv Null(SV*)
8d063cd8 25
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26#ifdef TRUE
27#undef TRUE
28#endif
29#ifdef FALSE
30#undef FALSE
31#endif
32#define TRUE (1)
33#define FALSE (0)
34
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35
36/* XXX Configure ought to have a test for a boolean type, if I can
37 just figure out all the headers such a test needs.
38 Andy Dougherty August 1996
39*/
232e078e 40/* bool is built-in for g++-2.6.3, which might be used for an extension.
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41 If the extension includes <_G_config.h> before this file then
42 _G_HAVE_BOOL will be properly set. If, however, the extension includes
43 this file first, then you will have to manually set -DHAS_BOOL in
44 your command line to avoid a conflict.
45*/
46#ifdef _G_HAVE_BOOL
47# if _G_HAVE_BOOL
48# ifndef HAS_BOOL
49# define HAS_BOOL 1
50# endif
51# endif
52#endif
53
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54/* The NeXT dynamic loader headers will not build with the bool macro
55 So declare them now to clear confusion.
56*/
57#ifdef NeXT
58# undef FALSE
59# undef TRUE
60 typedef enum bool { FALSE = 0, TRUE = 1 } bool;
61# define ENUM_BOOL 1
62# ifndef HAS_BOOL
63# define HAS_BOOL 1
64# endif /* !HAS_BOOL */
65#endif /* NeXT */
66
5d94fbed 67#ifndef HAS_BOOL
61bb5906 68# if defined(UTS) || defined(VMS)
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69# define bool int
70# else
71# define bool char
72# endif
a687059c 73#endif
0d3e774c 74
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75/* XXX A note on the perl source internal type system. The
76 original intent was that I32 be *exactly* 32 bits.
77
78 Currently, we only guarantee that I32 is *at least* 32 bits.
79 Specifically, if int is 64 bits, then so is I32. (This is the case
80 for the Cray.) This has the advantage of meshing nicely with
81 standard library calls (where we pass an I32 and the library is
82 expecting an int), but the disadvantage that an I32 is not 32 bits.
83 Andy Dougherty August 1996
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84
85 In the future, we may perhaps want to think about something like
86 #if INTSIZE == 4
87 typedef I32 int;
88 #else
89 # if LONGSIZE == 4
90 typedef I32 long;
91 # else
92 # if SHORTSIZE == 4
93 typedef I32 short;
94 # else
95 typedef I32 int;
96 # endif
97 # endif
98 #endif
99 For the moment, these are mentioned here so metaconfig will
100 construct Configure to figure out the various sizes.
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101*/
102
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103typedef char I8;
104typedef unsigned char U8;
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105/* I8_MAX and I8_MIN constants are not defined, as I8 is an ambiguous type.
106 Please search CHAR_MAX in perl.h for further details. */
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107#define U8_MAX PERL_UCHAR_MAX
108#define U8_MIN PERL_UCHAR_MIN
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109
110typedef short I16;
111typedef unsigned short U16;
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112#define I16_MAX PERL_SHORT_MAX
113#define I16_MIN PERL_SHORT_MIN
114#define U16_MAX PERL_USHORT_MAX
115#define U16_MIN PERL_USHORT_MIN
79072805 116
a0d0e21e 117#if BYTEORDER > 0x4321
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118 typedef int I32;
119 typedef unsigned int U32;
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120# define I32_MAX PERL_INT_MAX
121# define I32_MIN PERL_INT_MIN
122# define U32_MAX PERL_UINT_MAX
123# define U32_MIN PERL_UINT_MIN
79072805 124#else
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125 typedef long I32;
126 typedef unsigned long U32;
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127# define I32_MAX PERL_LONG_MAX
128# define I32_MIN PERL_LONG_MIN
129# define U32_MAX PERL_ULONG_MAX
130# define U32_MIN PERL_ULONG_MIN
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131#endif
132
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133#define BIT_DIGITS(N) (((N)*146)/485 + 1) /* log2(10) =~ 146/485 */
134#define TYPE_DIGITS(T) BIT_DIGITS(sizeof(T) * 8)
135#define TYPE_CHARS(T) (TYPE_DIGITS(T) + 2) /* sign, NUL */
136
ff68c719 137#define Ctl(ch) ((ch) & 037)
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138
139#define strNE(s1,s2) (strcmp(s1,s2))
140#define strEQ(s1,s2) (!strcmp(s1,s2))
141#define strLT(s1,s2) (strcmp(s1,s2) < 0)
142#define strLE(s1,s2) (strcmp(s1,s2) <= 0)
143#define strGT(s1,s2) (strcmp(s1,s2) > 0)
144#define strGE(s1,s2) (strcmp(s1,s2) >= 0)
145#define strnNE(s1,s2,l) (strncmp(s1,s2,l))
146#define strnEQ(s1,s2,l) (!strncmp(s1,s2,l))
378cc40b 147
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148#ifdef HAS_MEMCMP
149# define memNE(s1,s2,l) (memcmp(s1,s2,l))
150# define memEQ(s1,s2,l) (!memcmp(s1,s2,l))
151#else
152# define memNE(s1,s2,l) (bcmp(s1,s2,l))
153# define memEQ(s1,s2,l) (!bcmp(s1,s2,l))
154#endif
155
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156/*
157 * Character classes.
158 *
159 * Unfortunately, the introduction of locales means that we
160 * can't trust isupper(), etc. to tell the truth. And when
161 * it comes to /\w+/ with tainting enabled, we *must* be able
162 * to trust our character classes.
163 *
164 * Therefore, the default tests in the text of Perl will be
165 * independent of locale. Any code that wants to depend on
166 * the current locale will use the tests that begin with "lc".
167 */
168
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169#ifdef HAS_SETLOCALE /* XXX Is there a better test for this? */
170# ifndef CTYPE256
171# define CTYPE256
172# endif
173#endif
174
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175#define isALNUM(c) (isALPHA(c) || isDIGIT(c) || (c) == '_')
176#define isIDFIRST(c) (isALPHA(c) || (c) == '_')
177#define isALPHA(c) (isUPPER(c) || isLOWER(c))
178#define isSPACE(c) \
179 ((c) == ' ' || (c) == '\t' || (c) == '\n' || (c) =='\r' || (c) == '\f')
180#define isDIGIT(c) ((c) >= '0' && (c) <= '9')
181#define isUPPER(c) ((c) >= 'A' && (c) <= 'Z')
182#define isLOWER(c) ((c) >= 'a' && (c) <= 'z')
183#define isPRINT(c) (((c) > 32 && (c) < 127) || isSPACE(c))
184#define toUPPER(c) (isLOWER(c) ? (c) - ('a' - 'A') : (c))
185#define toLOWER(c) (isUPPER(c) ? (c) + ('a' - 'A') : (c))
186
187#ifdef USE_NEXT_CTYPE
188
189# define isALNUM_LC(c) \
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190 (NXIsAlpha((unsigned int)(c)) || NXIsDigit((unsigned int)(c)) || \
191 (char)(c) == '_')
192# define isIDFIRST_LC(c) \
193 (NXIsAlpha((unsigned int)(c)) || (char)(c) == '_')
194# define isALPHA_LC(c) NXIsAlpha((unsigned int)(c))
195# define isSPACE_LC(c) NXIsSpace((unsigned int)(c))
196# define isDIGIT_LC(c) NXIsDigit((unsigned int)(c))
197# define isUPPER_LC(c) NXIsUpper((unsigned int)(c))
198# define isLOWER_LC(c) NXIsLower((unsigned int)(c))
199# define isPRINT_LC(c) NXIsPrint((unsigned int)(c))
200# define toUPPER_LC(c) NXToUpper((unsigned int)(c))
201# define toLOWER_LC(c) NXToLower((unsigned int)(c))
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202
203#else /* !USE_NEXT_CTYPE */
204# if defined(CTYPE256) || (!defined(isascii) && !defined(HAS_ISASCII))
205
206# define isALNUM_LC(c) \
207 (isalpha((unsigned char)(c)) || \
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208 isdigit((unsigned char)(c)) || (char)(c) == '_')
209# define isIDFIRST_LC(c) (isalpha((unsigned char)(c)) || (char)(c) == '_')
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210# define isALPHA_LC(c) isalpha((unsigned char)(c))
211# define isSPACE_LC(c) isspace((unsigned char)(c))
212# define isDIGIT_LC(c) isdigit((unsigned char)(c))
213# define isUPPER_LC(c) isupper((unsigned char)(c))
214# define isLOWER_LC(c) islower((unsigned char)(c))
215# define isPRINT_LC(c) isprint((unsigned char)(c))
216# define toUPPER_LC(c) toupper((unsigned char)(c))
217# define toLOWER_LC(c) tolower((unsigned char)(c))
218
219# else
220
221# define isALNUM_LC(c) \
ff68c719 222 (isascii(c) && (isalpha(c) || isdigit(c) || (c) == '_'))
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223# define isIDFIRST_LC(c) (isascii(c) && (isalpha(c) || (c) == '_'))
224# define isALPHA_LC(c) (isascii(c) && isalpha(c))
225# define isSPACE_LC(c) (isascii(c) && isspace(c))
226# define isDIGIT_LC(c) (isascii(c) && isdigit(c))
227# define isUPPER_LC(c) (isascii(c) && isupper(c))
228# define isLOWER_LC(c) (isascii(c) && islower(c))
229# define isPRINT_LC(c) (isascii(c) && isprint(c))
230# define toUPPER_LC(c) toupper(c)
231# define toLOWER_LC(c) tolower(c)
232
233# endif
a0d0e21e 234#endif /* USE_NEXT_CTYPE */
55204971 235
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236/* This conversion works both ways, strangely enough. */
237#define toCTRL(c) (toUPPER(c) ^ 64)
238
378cc40b 239/* Line numbers are unsigned, 16 bits. */
79072805 240typedef U16 line_t;
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241#ifdef lint
242#define NOLINE ((line_t)0)
243#else
244#define NOLINE ((line_t) 65535)
245#endif
246
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247/* XXX LEAKTEST doesn't really work in perl5. There are direct calls to
248 safemalloc() in the source, so LEAKTEST won't pick them up.
249 Further, if you try LEAKTEST, you'll also end up calling
250 Safefree, which might call safexfree() on some things that weren't
251 malloced with safexmalloc. The correct "fix" to this, if anyone
252 is interested, is to ensure that all calls go through the New and
253 Renew macros.
254 --Andy Dougherty August 1996
255*/
55497cff 256
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257#ifndef lint
258#ifndef LEAKTEST
598a3d64 259
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260#define New(x,v,n,t) (v = (t*)safemalloc((MEM_SIZE)((n)*sizeof(t))))
261#define Newc(x,v,n,t,c) (v = (c*)safemalloc((MEM_SIZE)((n)*sizeof(t))))
262#define Newz(x,v,n,t) (v = (t*)safemalloc((MEM_SIZE)((n)*sizeof(t)))), \
263 memzero((char*)(v), (n)*sizeof(t))
264#define Renew(v,n,t) \
265 (v = (t*)saferealloc((Malloc_t)(v),(MEM_SIZE)((n)*sizeof(t))))
266#define Renewc(v,n,t,c) \
267 (v = (c*)saferealloc((Malloc_t)(v),(MEM_SIZE)((n)*sizeof(t))))
268#define Safefree(d) safefree((Malloc_t)(d))
269#define NEWSV(x,len) newSV(len)
55497cff 270
a687059c 271#else /* LEAKTEST */
55497cff 272
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273#define New(x,v,n,t) (v = (t*)safexmalloc((x),(MEM_SIZE)((n)*sizeof(t))))
274#define Newc(x,v,n,t,c) (v = (c*)safexmalloc((x),(MEM_SIZE)((n)*sizeof(t))))
275#define Newz(x,v,n,t) (v = (t*)safexmalloc((x),(MEM_SIZE)((n)*sizeof(t)))), \
276 memzero((char*)(v), (n)*sizeof(t))
277#define Renew(v,n,t) \
278 (v = (t*)safexrealloc((Malloc_t)(v),(MEM_SIZE)((n)*sizeof(t))))
279#define Renewc(v,n,t,c) \
280 (v = (c*)safexrealloc((Malloc_t)(v),(MEM_SIZE)((n)*sizeof(t))))
281#define Safefree(d) safexfree((Malloc_t)d)
282#define NEWSV(x,len) newSV(x,len)
283
fc36a67e 284#define MAXXCOUNT 1400
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285long xcount[MAXXCOUNT];
286long lastxcount[MAXXCOUNT];
55497cff 287
a687059c 288#endif /* LEAKTEST */
55497cff 289
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290#define Move(s,d,n,t) (void)memmove((char*)(d),(char*)(s), (n) * sizeof(t))
291#define Copy(s,d,n,t) (void)memcpy((char*)(d),(char*)(s), (n) * sizeof(t))
292#define Zero(d,n,t) (void)memzero((char*)(d), (n) * sizeof(t))
55497cff 293
a687059c 294#else /* lint */
55497cff 295
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296#define New(x,v,n,s) (v = Null(s *))
297#define Newc(x,v,n,s,c) (v = Null(s *))
298#define Newz(x,v,n,s) (v = Null(s *))
299#define Renew(v,n,s) (v = Null(s *))
bee1dbe2 300#define Move(s,d,n,t)
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301#define Copy(s,d,n,t)
302#define Zero(d,n,t)
ff68c719 303#define Safefree(d) (d) = (d)
55497cff 304
a687059c 305#endif /* lint */
bee1dbe2 306
2304df62 307#ifdef USE_STRUCT_COPY
ff68c719 308#define StructCopy(s,d,t) (*((t*)(d)) = *((t*)(s)))
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309#else
310#define StructCopy(s,d,t) Copy(s,d,1,t)
311#endif