/[pcre]/code/trunk/pcre_internal.h
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revision 91 by nigel, Sat Feb 24 21:41:34 2007 UTC revision 211 by ph10, Thu Aug 9 09:52:43 2007 UTC
# Line 7  Line 7 
7  and semantics are as close as possible to those of the Perl 5 language.  and semantics are as close as possible to those of the Perl 5 language.
8    
9                         Written by Philip Hazel                         Written by Philip Hazel
10             Copyright (c) 1997-2006 University of Cambridge             Copyright (c) 1997-2007 University of Cambridge
11    
12  -----------------------------------------------------------------------------  -----------------------------------------------------------------------------
13  Redistribution and use in source and binary forms, with or without  Redistribution and use in source and binary forms, with or without
# Line 54  functions whose names all begin with "_p Line 54  functions whose names all begin with "_p
54  /* Use a macro for debugging printing, 'cause that eliminates the use of #ifdef  /* Use a macro for debugging printing, 'cause that eliminates the use of #ifdef
55  inline, and there are *still* stupid compilers about that don't like indented  inline, and there are *still* stupid compilers about that don't like indented
56  pre-processor statements, or at least there were when I first wrote this. After  pre-processor statements, or at least there were when I first wrote this. After
57  all, it had only been about 10 years then... */  all, it had only been about 10 years then...
58    
59    It turns out that the Mac Debugging.h header also defines the macro DPRINTF, so
60    be absolutely sure we get our version. */
61    
62    #undef DPRINTF
63  #ifdef DEBUG  #ifdef DEBUG
64  #define DPRINTF(p) printf p  #define DPRINTF(p) printf p
65  #else  #else
66  #define DPRINTF(p) /*nothing*/  #define DPRINTF(p) /* Nothing */
67  #endif  #endif
68    
69    
 /* Get the definitions provided by running "configure" */  
   
 #include "config.h"  
   
70  /* Standard C headers plus the external interface definition. The only time  /* Standard C headers plus the external interface definition. The only time
71  setjmp and stdarg are used is when NO_RECURSE is set. */  setjmp and stdarg are used is when NO_RECURSE is set. */
72    
# Line 79  setjmp and stdarg are used is when NO_RE Line 79  setjmp and stdarg are used is when NO_RE
79  #include <stdlib.h>  #include <stdlib.h>
80  #include <string.h>  #include <string.h>
81    
82  #ifndef PCRE_SPY  /* When compiling a DLL for Windows, the exported symbols have to be declared
83  #define PCRE_DEFINITION       /* Win32 __declspec(export) trigger for .dll */  using some MS magic. I found some useful information on this web page:
84    http://msdn2.microsoft.com/en-us/library/y4h7bcy6(VS.80).aspx. According to the
85    information there, using __declspec(dllexport) without "extern" we have a
86    definition; with "extern" we have a declaration. The settings here override the
87    setting in pcre.h (which is included below); it defines only PCRE_EXP_DECL,
88    which is all that is needed for applications (they just import the symbols). We
89    use:
90    
91      PCRE_EXP_DECL       for declarations
92      PCRE_EXP_DEFN       for definitions of exported functions
93      PCRE_EXP_DATA_DEFN  for definitions of exported variables
94    
95    The reason for the two DEFN macros is that in non-Windows environments, one
96    does not want to have "extern" before variable definitions because it leads to
97    compiler warnings. So we distinguish between functions and variables. In
98    Windows, the two should always be the same.
99    
100    The reason for wrapping this in #ifndef PCRE_EXP_DECL is so that pcretest,
101    which is an application, but needs to import this file in order to "peek" at
102    internals, can #include pcre.h first to get an application's-eye view.
103    
104    In principle, people compiling for non-Windows, non-Unix-like (i.e. uncommon,
105    special-purpose environments) might want to stick other stuff in front of
106    exported symbols. That's why, in the non-Windows case, we set PCRE_EXP_DEFN and
107    PCRE_EXP_DATA_DEFN only if they are not already set. */
108    
109    #ifndef PCRE_EXP_DECL
110    #  ifdef _WIN32
111    #    ifndef PCRE_STATIC
112    #      define PCRE_EXP_DECL       extern __declspec(dllexport)
113    #      define PCRE_EXP_DEFN       __declspec(dllexport)
114    #      define PCRE_EXP_DATA_DEFN  __declspec(dllexport)
115    #    else
116    #      define PCRE_EXP_DECL       extern
117    #      define PCRE_EXP_DEFN
118    #      define PCRE_EXP_DATA_DEFN
119    #    endif
120    #  else
121    #    ifdef __cplusplus
122    #      define PCRE_EXP_DECL       extern "C"
123    #    else
124    #      define PCRE_EXP_DECL       extern
125    #    endif
126    #    ifndef PCRE_EXP_DEFN
127    #      define PCRE_EXP_DEFN       PCRE_EXP_DECL
128    #    endif
129    #    ifndef PCRE_EXP_DATA_DEFN
130    #      define PCRE_EXP_DATA_DEFN
131    #    endif
132    #  endif
133  #endif  #endif
134    
135  /* We need to have types that specify unsigned 16-bit and 32-bit integers. We  /* We need to have types that specify unsigned 16-bit and 32-bit integers. We
# Line 114  Unix, where it is defined in sys/types, Line 163  Unix, where it is defined in sys/types,
163    
164  typedef unsigned char uschar;  typedef unsigned char uschar;
165    
166  /* PCRE is able to support 3 different kinds of newline (CR, LF, CRLF). The  /* This is an unsigned int value that no character can ever have. UTF-8
167  following macro is used to package up testing for newlines. NLBLOCK is defined  characters only go up to 0x7fffffff (though Unicode doesn't go beyond
168  in the various modules to indicate in which datablock the parameters exist. */  0x0010ffff). */
169    
170    #define NOTACHAR 0xffffffff
171    
172    /* PCRE is able to support several different kinds of newline (CR, LF, CRLF,
173    "any" and "anycrlf" at present). The following macros are used to package up
174    testing for newlines. NLBLOCK, PSSTART, and PSEND are defined in the various
175    modules to indicate in which datablock the parameters exist, and what the
176    start/end of string field names are. */
177    
178    #define NLTYPE_FIXED    0     /* Newline is a fixed length string */
179    #define NLTYPE_ANY      1     /* Newline is any Unicode line ending */
180    #define NLTYPE_ANYCRLF  2     /* Newline is CR, LF, or CRLF */
181    
182    /* This macro checks for a newline at the given position */
183    
184  #define IS_NEWLINE(p) \  #define IS_NEWLINE(p) \
185    ((p)[0] == NLBLOCK->nl[0] && \    ((NLBLOCK->nltype != NLTYPE_FIXED)? \
186    (NLBLOCK->nllen == 1 || (p)[1] == NLBLOCK->nl[1]))      ((p) < NLBLOCK->PSEND && \
187         _pcre_is_newline((p), NLBLOCK->nltype, NLBLOCK->PSEND, &(NLBLOCK->nllen),\
188           utf8)) \
189        : \
190        ((p) <= NLBLOCK->PSEND - NLBLOCK->nllen && \
191         (p)[0] == NLBLOCK->nl[0] && \
192         (NLBLOCK->nllen == 1 || (p)[1] == NLBLOCK->nl[1]) \
193        ) \
194      )
195    
196    /* This macro checks for a newline immediately preceding the given position */
197    
198    #define WAS_NEWLINE(p) \
199      ((NLBLOCK->nltype != NLTYPE_FIXED)? \
200        ((p) > NLBLOCK->PSSTART && \
201         _pcre_was_newline((p), NLBLOCK->nltype, NLBLOCK->PSSTART, \
202           &(NLBLOCK->nllen), utf8)) \
203        : \
204        ((p) >= NLBLOCK->PSSTART + NLBLOCK->nllen && \
205         (p)[-NLBLOCK->nllen] == NLBLOCK->nl[0] && \
206         (NLBLOCK->nllen == 1 || (p)[-NLBLOCK->nllen+1] == NLBLOCK->nl[1]) \
207        ) \
208      )
209    
210  /* When PCRE is compiled as a C++ library, the subject pointer can be replaced  /* When PCRE is compiled as a C++ library, the subject pointer can be replaced
211  with a custom type. This makes it possible, for example, to allow pcre_exec()  with a custom type. This makes it possible, for example, to allow pcre_exec()
# Line 139  must begin with PCRE_. */ Line 224  must begin with PCRE_. */
224  #define USPTR const unsigned char *  #define USPTR const unsigned char *
225  #endif  #endif
226    
227    
228    
229  /* Include the public PCRE header and the definitions of UCP character property  /* Include the public PCRE header and the definitions of UCP character property
230  values. */  values. */
231    
# Line 150  need to have their names changed. PCRE m Line 237  need to have their names changed. PCRE m
237  option on the command line. */  option on the command line. */
238    
239  #ifdef VPCOMPAT  #ifdef VPCOMPAT
240    #define strlen(s)        _strlen(s)
241  #define strncmp(s1,s2,m) _strncmp(s1,s2,m)  #define strncmp(s1,s2,m) _strncmp(s1,s2,m)
242    #define memcmp(s,c,n)    _memcmp(s,c,n)
243  #define memcpy(d,s,n)    _memcpy(d,s,n)  #define memcpy(d,s,n)    _memcpy(d,s,n)
244  #define memmove(d,s,n)   _memmove(d,s,n)  #define memmove(d,s,n)   _memmove(d,s,n)
245  #define memset(s,c,n)    _memset(s,c,n)  #define memset(s,c,n)    _memset(s,c,n)
# Line 159  option on the command line. */ Line 248  option on the command line. */
248  /* To cope with SunOS4 and other systems that lack memmove() but have bcopy(),  /* To cope with SunOS4 and other systems that lack memmove() but have bcopy(),
249  define a macro for memmove() if HAVE_MEMMOVE is false, provided that HAVE_BCOPY  define a macro for memmove() if HAVE_MEMMOVE is false, provided that HAVE_BCOPY
250  is set. Otherwise, include an emulating function for those systems that have  is set. Otherwise, include an emulating function for those systems that have
251  neither (there some non-Unix environments where this is the case). This assumes  neither (there some non-Unix environments where this is the case). */
 that all calls to memmove are moving strings upwards in store, which is the  
 case in PCRE. */  
252    
253  #if ! HAVE_MEMMOVE  #ifndef HAVE_MEMMOVE
254  #undef  memmove        /* some systems may have a macro */  #undef  memmove        /* some systems may have a macro */
255  #if HAVE_BCOPY  #ifdef HAVE_BCOPY
256  #define memmove(a, b, c) bcopy(b, a, c)  #define memmove(a, b, c) bcopy(b, a, c)
257  #else  /* HAVE_BCOPY */  #else  /* HAVE_BCOPY */
258  static void *  static void *
259  pcre_memmove(unsigned char *dest, const unsigned char *src, size_t n)  pcre_memmove(void *d, const void *s, size_t n)
260  {  {
261  size_t i;  size_t i;
262  dest += n;  unsigned char *dest = (unsigned char *)d;
263  src += n;  const unsigned char *src = (const unsigned char *)s;
264  for (i = 0; i < n; ++i) *(--dest) =  *(--src);  if (dest > src)
265  return dest;    {
266      dest += n;
267      src += n;
268      for (i = 0; i < n; ++i) *(--dest) = *(--src);
269      return (void *)dest;
270      }
271    else
272      {
273      for (i = 0; i < n; ++i) *dest++ = *src++;
274      return (void *)(dest - n);
275      }
276  }  }
277  #define memmove(a, b, c) pcre_memmove(a, b, c)  #define memmove(a, b, c) pcre_memmove(a, b, c)
278  #endif   /* not HAVE_BCOPY */  #endif   /* not HAVE_BCOPY */
# Line 261  capturing parenthesis numbers in back re Line 358  capturing parenthesis numbers in back re
358    
359  /* When UTF-8 encoding is being used, a character is no longer just a single  /* When UTF-8 encoding is being used, a character is no longer just a single
360  byte. The macros for character handling generate simple sequences when used in  byte. The macros for character handling generate simple sequences when used in
361  byte-mode, and more complicated ones for UTF-8 characters. */  byte-mode, and more complicated ones for UTF-8 characters. BACKCHAR should
362    never be called in byte mode. To make sure it can never even appear when UTF-8
363    support is omitted, we don't even define it. */
364    
365  #ifndef SUPPORT_UTF8  #ifndef SUPPORT_UTF8
366  #define GETCHAR(c, eptr) c = *eptr;  #define GETCHAR(c, eptr) c = *eptr;
# Line 269  byte-mode, and more complicated ones for Line 368  byte-mode, and more complicated ones for
368  #define GETCHARINC(c, eptr) c = *eptr++;  #define GETCHARINC(c, eptr) c = *eptr++;
369  #define GETCHARINCTEST(c, eptr) c = *eptr++;  #define GETCHARINCTEST(c, eptr) c = *eptr++;
370  #define GETCHARLEN(c, eptr, len) c = *eptr;  #define GETCHARLEN(c, eptr, len) c = *eptr;
371  #define BACKCHAR(eptr)  /* #define BACKCHAR(eptr) */
372    
373  #else   /* SUPPORT_UTF8 */  #else   /* SUPPORT_UTF8 */
374    
# Line 278  we know we are in UTF-8 mode. */ Line 377  we know we are in UTF-8 mode. */
377    
378  #define GETCHAR(c, eptr) \  #define GETCHAR(c, eptr) \
379    c = *eptr; \    c = *eptr; \
380    if ((c & 0xc0) == 0xc0) \    if (c >= 0xc0) \
381      { \      { \
382      int gcii; \      int gcii; \
383      int gcaa = _pcre_utf8_table4[c & 0x3f];  /* Number of additional bytes */ \      int gcaa = _pcre_utf8_table4[c & 0x3f];  /* Number of additional bytes */ \
# Line 296  pointer. */ Line 395  pointer. */
395    
396  #define GETCHARTEST(c, eptr) \  #define GETCHARTEST(c, eptr) \
397    c = *eptr; \    c = *eptr; \
398    if (utf8 && (c & 0xc0) == 0xc0) \    if (utf8 && c >= 0xc0) \
399      { \      { \
400      int gcii; \      int gcii; \
401      int gcaa = _pcre_utf8_table4[c & 0x3f];  /* Number of additional bytes */ \      int gcaa = _pcre_utf8_table4[c & 0x3f];  /* Number of additional bytes */ \
# Line 314  know we are in UTF-8 mode. */ Line 413  know we are in UTF-8 mode. */
413    
414  #define GETCHARINC(c, eptr) \  #define GETCHARINC(c, eptr) \
415    c = *eptr++; \    c = *eptr++; \
416    if ((c & 0xc0) == 0xc0) \    if (c >= 0xc0) \
417      { \      { \
418      int gcaa = _pcre_utf8_table4[c & 0x3f];  /* Number of additional bytes */ \      int gcaa = _pcre_utf8_table4[c & 0x3f];  /* Number of additional bytes */ \
419      int gcss = 6*gcaa; \      int gcss = 6*gcaa; \
# Line 330  know we are in UTF-8 mode. */ Line 429  know we are in UTF-8 mode. */
429    
430  #define GETCHARINCTEST(c, eptr) \  #define GETCHARINCTEST(c, eptr) \
431    c = *eptr++; \    c = *eptr++; \
432    if (utf8 && (c & 0xc0) == 0xc0) \    if (utf8 && c >= 0xc0) \
433      { \      { \
434      int gcaa = _pcre_utf8_table4[c & 0x3f];  /* Number of additional bytes */ \      int gcaa = _pcre_utf8_table4[c & 0x3f];  /* Number of additional bytes */ \
435      int gcss = 6*gcaa; \      int gcss = 6*gcaa; \
# Line 347  if there are extra bytes. This is called Line 446  if there are extra bytes. This is called
446    
447  #define GETCHARLEN(c, eptr, len) \  #define GETCHARLEN(c, eptr, len) \
448    c = *eptr; \    c = *eptr; \
449    if ((c & 0xc0) == 0xc0) \    if (c >= 0xc0) \
450      { \      { \
451      int gcii; \      int gcii; \
452      int gcaa = _pcre_utf8_table4[c & 0x3f];  /* Number of additional bytes */ \      int gcaa = _pcre_utf8_table4[c & 0x3f];  /* Number of additional bytes */ \
# Line 362  if there are extra bytes. This is called Line 461  if there are extra bytes. This is called
461      }      }
462    
463  /* If the pointer is not at the start of a character, move it back until  /* If the pointer is not at the start of a character, move it back until
464  it is. Called only in UTF-8 mode. */  it is. This is called only in UTF-8 mode - we don't put a test within the macro
465    because almost all calls are already within a block of UTF-8 only code. */
466    
467  #define BACKCHAR(eptr) while((*eptr & 0xc0) == 0x80) eptr--;  #define BACKCHAR(eptr) while((*eptr & 0xc0) == 0x80) eptr--
468    
469  #endif  #endif
470    
# Line 400  bits. */ Line 500  bits. */
500  /* Masks for identifying the public options that are permitted at compile  /* Masks for identifying the public options that are permitted at compile
501  time, run time, or study time, respectively. */  time, run time, or study time, respectively. */
502    
503    #define PCRE_NEWLINE_BITS (PCRE_NEWLINE_CR|PCRE_NEWLINE_LF|PCRE_NEWLINE_ANY| \
504                               PCRE_NEWLINE_ANYCRLF)
505    
506  #define PUBLIC_OPTIONS \  #define PUBLIC_OPTIONS \
507    (PCRE_CASELESS|PCRE_EXTENDED|PCRE_ANCHORED|PCRE_MULTILINE| \    (PCRE_CASELESS|PCRE_EXTENDED|PCRE_ANCHORED|PCRE_MULTILINE| \
508     PCRE_DOTALL|PCRE_DOLLAR_ENDONLY|PCRE_EXTRA|PCRE_UNGREEDY|PCRE_UTF8| \     PCRE_DOTALL|PCRE_DOLLAR_ENDONLY|PCRE_EXTRA|PCRE_UNGREEDY|PCRE_UTF8| \
509     PCRE_NO_AUTO_CAPTURE|PCRE_NO_UTF8_CHECK|PCRE_AUTO_CALLOUT|PCRE_FIRSTLINE| \     PCRE_NO_AUTO_CAPTURE|PCRE_NO_UTF8_CHECK|PCRE_AUTO_CALLOUT|PCRE_FIRSTLINE| \
510     PCRE_DUPNAMES|PCRE_NEWLINE_CR|PCRE_NEWLINE_LF)     PCRE_DUPNAMES|PCRE_NEWLINE_BITS)
511    
512  #define PUBLIC_EXEC_OPTIONS \  #define PUBLIC_EXEC_OPTIONS \
513    (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NO_UTF8_CHECK| \    (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NO_UTF8_CHECK| \
514     PCRE_PARTIAL|PCRE_NEWLINE_CR|PCRE_NEWLINE_LF)     PCRE_PARTIAL|PCRE_NEWLINE_BITS)
515    
516  #define PUBLIC_DFA_EXEC_OPTIONS \  #define PUBLIC_DFA_EXEC_OPTIONS \
517    (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NO_UTF8_CHECK| \    (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NO_UTF8_CHECK| \
518     PCRE_PARTIAL|PCRE_DFA_SHORTEST|PCRE_DFA_RESTART|PCRE_NEWLINE_CR| \     PCRE_PARTIAL|PCRE_DFA_SHORTEST|PCRE_DFA_RESTART|PCRE_NEWLINE_BITS)
    PCRE_NEWLINE_LF)  
519    
520  #define PUBLIC_STUDY_OPTIONS 0   /* None defined */  #define PUBLIC_STUDY_OPTIONS 0   /* None defined */
521    
# Line 445  typedef int BOOL; Line 547  typedef int BOOL;
547  #define FALSE   0  #define FALSE   0
548  #define TRUE    1  #define TRUE    1
549    
550  /* Escape items that are just an encoding of a particular data value. Note that  /* Escape items that are just an encoding of a particular data value. */
 ESC_n is defined as yet another macro, which is set in config.h to either \n  
 (the default) or \r (which some people want). */  
551    
552  #ifndef ESC_e  #ifndef ESC_e
553  #define ESC_e 27  #define ESC_e 27
# Line 458  ESC_n is defined as yet another macro, w Line 558  ESC_n is defined as yet another macro, w
558  #endif  #endif
559    
560  #ifndef ESC_n  #ifndef ESC_n
561  #define ESC_n NEWLINE  #define ESC_n '\n'
562  #endif  #endif
563    
564  #ifndef ESC_r  #ifndef ESC_r
# Line 497  value such as \n. They must have non-zer Line 597  value such as \n. They must have non-zer
597  their negation. Also, they must appear in the same order as in the opcode  their negation. Also, they must appear in the same order as in the opcode
598  definitions below, up to ESC_z. There's a dummy for OP_ANY because it  definitions below, up to ESC_z. There's a dummy for OP_ANY because it
599  corresponds to "." rather than an escape sequence. The final one must be  corresponds to "." rather than an escape sequence. The final one must be
600  ESC_REF as subsequent values are used for \1, \2, \3, etc. There is are two  ESC_REF as subsequent values are used for backreferences (\1, \2, \3, etc).
601  tests in the code for an escape greater than ESC_b and less than ESC_Z to  There are two tests in the code for an escape greater than ESC_b and less than
602  detect the types that may be repeated. These are the types that consume  ESC_Z to detect the types that may be repeated. These are the types that
603  characters. If any new escapes are put in between that don't consume a  consume characters. If any new escapes are put in between that don't consume a
604  character, that code will have to change. */  character, that code will have to change. */
605    
606  enum { ESC_A = 1, ESC_G, ESC_B, ESC_b, ESC_D, ESC_d, ESC_S, ESC_s, ESC_W,  enum { ESC_A = 1, ESC_G, ESC_K, ESC_B, ESC_b, ESC_D, ESC_d, ESC_S, ESC_s,
607         ESC_w, ESC_dum1, ESC_C, ESC_P, ESC_p, ESC_X, ESC_Z, ESC_z, ESC_E,         ESC_W, ESC_w, ESC_dum1, ESC_C, ESC_P, ESC_p, ESC_R, ESC_H, ESC_h,
608         ESC_Q, ESC_REF };         ESC_V, ESC_v, ESC_X, ESC_Z, ESC_z, ESC_E, ESC_Q, ESC_k, ESC_REF };
609    
610    
611  /* Opcode table: OP_BRA must be last, as all values >= it are used for brackets  /* Opcode table: Starting from 1 (i.e. after OP_END), the values up to
 that extract substrings. Starting from 1 (i.e. after OP_END), the values up to  
612  OP_EOD must correspond in order to the list of escapes immediately above.  OP_EOD must correspond in order to the list of escapes immediately above.
613  Note that whenever this list is updated, the two macro definitions that follow  
614  must also be updated to match. */  *** NOTE NOTE NOTE *** Whenever this list is updated, the two macro definitions
615    that follow must also be updated to match. There is also a table called
616    "coptable" in pcre_dfa_exec.c that must be updated. */
617    
618  enum {  enum {
619    OP_END,            /* 0 End of pattern */    OP_END,            /* 0 End of pattern */
# Line 520  enum { Line 622  enum {
622    
623    OP_SOD,            /* 1 Start of data: \A */    OP_SOD,            /* 1 Start of data: \A */
624    OP_SOM,            /* 2 Start of match (subject + offset): \G */    OP_SOM,            /* 2 Start of match (subject + offset): \G */
625    OP_NOT_WORD_BOUNDARY,  /*  3 \B */    OP_SET_SOM,        /* 3 Set start of match (\K) */
626    OP_WORD_BOUNDARY,      /*  4 \b */    OP_NOT_WORD_BOUNDARY,  /*  4 \B */
627    OP_NOT_DIGIT,          /*  5 \D */    OP_WORD_BOUNDARY,      /*  5 \b */
628    OP_DIGIT,              /*  6 \d */    OP_NOT_DIGIT,          /*  6 \D */
629    OP_NOT_WHITESPACE,     /*  7 \S */    OP_DIGIT,              /*  7 \d */
630    OP_WHITESPACE,         /*  8 \s */    OP_NOT_WHITESPACE,     /*  8 \S */
631    OP_NOT_WORDCHAR,       /*  9 \W */    OP_WHITESPACE,         /*  9 \s */
632    OP_WORDCHAR,           /* 10 \w */    OP_NOT_WORDCHAR,       /* 10 \W */
633    OP_ANY,            /* 11 Match any character */    OP_WORDCHAR,           /* 11 \w */
634    OP_ANYBYTE,        /* 12 Match any byte (\C); different to OP_ANY for UTF-8 */    OP_ANY,            /* 12 Match any character */
635    OP_NOTPROP,        /* 13 \P (not Unicode property) */    OP_ANYBYTE,        /* 13 Match any byte (\C); different to OP_ANY for UTF-8 */
636    OP_PROP,           /* 14 \p (Unicode property) */    OP_NOTPROP,        /* 14 \P (not Unicode property) */
637    OP_EXTUNI,         /* 15 \X (extended Unicode sequence */    OP_PROP,           /* 15 \p (Unicode property) */
638    OP_EODN,           /* 16 End of data or \n at end of data: \Z. */    OP_ANYNL,          /* 16 \R (any newline sequence) */
639    OP_EOD,            /* 17 End of data: \z */    OP_NOT_HSPACE,     /* 17 \H (not horizontal whitespace) */
640      OP_HSPACE,         /* 18 \h (horizontal whitespace) */
641    OP_OPT,            /* 18 Set runtime options */    OP_NOT_VSPACE,     /* 19 \V (not vertical whitespace) */
642    OP_CIRC,           /* 19 Start of line - varies with multiline switch */    OP_VSPACE,         /* 20 \v (vertical whitespace) */
643    OP_DOLL,           /* 20 End of line - varies with multiline switch */    OP_EXTUNI,         /* 21 \X (extended Unicode sequence */
644    OP_CHAR,           /* 21 Match one character, casefully */    OP_EODN,           /* 22 End of data or \n at end of data: \Z. */
645    OP_CHARNC,         /* 22 Match one character, caselessly */    OP_EOD,            /* 23 End of data: \z */
646    OP_NOT,            /* 23 Match one character, not the following one */  
647      OP_OPT,            /* 24 Set runtime options */
648    OP_STAR,           /* 24 The maximizing and minimizing versions of */    OP_CIRC,           /* 25 Start of line - varies with multiline switch */
649    OP_MINSTAR,        /* 25 all these opcodes must come in pairs, with */    OP_DOLL,           /* 26 End of line - varies with multiline switch */
650    OP_PLUS,           /* 26 the minimizing one second. */    OP_CHAR,           /* 27 Match one character, casefully */
651    OP_MINPLUS,        /* 27 This first set applies to single characters */    OP_CHARNC,         /* 28 Match one character, caselessly */
652    OP_QUERY,          /* 28 */    OP_NOT,            /* 29 Match one character, not the following one */
653    OP_MINQUERY,       /* 29 */  
654    OP_UPTO,           /* 30 From 0 to n matches */    OP_STAR,           /* 30 The maximizing and minimizing versions of */
655    OP_MINUPTO,        /* 31 */    OP_MINSTAR,        /* 31 these six opcodes must come in pairs, with */
656    OP_EXACT,          /* 32 Exactly n matches */    OP_PLUS,           /* 32 the minimizing one second. */
657      OP_MINPLUS,        /* 33 This first set applies to single characters.*/
658    OP_NOTSTAR,        /* 33 The maximizing and minimizing versions of */    OP_QUERY,          /* 34 */
659    OP_NOTMINSTAR,     /* 34 all these opcodes must come in pairs, with */    OP_MINQUERY,       /* 35 */
660    OP_NOTPLUS,        /* 35 the minimizing one second. */  
661    OP_NOTMINPLUS,     /* 36 This set applies to "not" single characters */    OP_UPTO,           /* 36 From 0 to n matches */
662    OP_NOTQUERY,       /* 37 */    OP_MINUPTO,        /* 37 */
663    OP_NOTMINQUERY,    /* 38 */    OP_EXACT,          /* 38 Exactly n matches */
664    OP_NOTUPTO,        /* 39 From 0 to n matches */  
665    OP_NOTMINUPTO,     /* 40 */    OP_POSSTAR,        /* 39 Possessified star */
666    OP_NOTEXACT,       /* 41 Exactly n matches */    OP_POSPLUS,        /* 40 Possessified plus */
667      OP_POSQUERY,       /* 41 Posesssified query */
668    OP_TYPESTAR,       /* 42 The maximizing and minimizing versions of */    OP_POSUPTO,        /* 42 Possessified upto */
669    OP_TYPEMINSTAR,    /* 43 all these opcodes must come in pairs, with */  
670    OP_TYPEPLUS,       /* 44 the minimizing one second. These codes must */    OP_NOTSTAR,        /* 43 The maximizing and minimizing versions of */
671    OP_TYPEMINPLUS,    /* 45 be in exactly the same order as those above. */    OP_NOTMINSTAR,     /* 44 these six opcodes must come in pairs, with */
672    OP_TYPEQUERY,      /* 46 This set applies to character types such as \d */    OP_NOTPLUS,        /* 45 the minimizing one second. They must be in */
673    OP_TYPEMINQUERY,   /* 47 */    OP_NOTMINPLUS,     /* 46 exactly the same order as those above. */
674    OP_TYPEUPTO,       /* 48 From 0 to n matches */    OP_NOTQUERY,       /* 47 This set applies to "not" single characters. */
675    OP_TYPEMINUPTO,    /* 49 */    OP_NOTMINQUERY,    /* 48 */
676    OP_TYPEEXACT,      /* 50 Exactly n matches */  
677      OP_NOTUPTO,        /* 49 From 0 to n matches */
678    OP_CRSTAR,         /* 51 The maximizing and minimizing versions of */    OP_NOTMINUPTO,     /* 50 */
679    OP_CRMINSTAR,      /* 52 all these opcodes must come in pairs, with */    OP_NOTEXACT,       /* 51 Exactly n matches */
680    OP_CRPLUS,         /* 53 the minimizing one second. These codes must */  
681    OP_CRMINPLUS,      /* 54 be in exactly the same order as those above. */    OP_NOTPOSSTAR,     /* 52 Possessified versions */
682    OP_CRQUERY,        /* 55 These are for character classes and back refs */    OP_NOTPOSPLUS,     /* 53 */
683    OP_CRMINQUERY,     /* 56 */    OP_NOTPOSQUERY,    /* 54 */
684    OP_CRRANGE,        /* 57 These are different to the three sets above. */    OP_NOTPOSUPTO,     /* 55 */
685    OP_CRMINRANGE,     /* 58 */  
686      OP_TYPESTAR,       /* 56 The maximizing and minimizing versions of */
687      OP_TYPEMINSTAR,    /* 57 these six opcodes must come in pairs, with */
688      OP_TYPEPLUS,       /* 58 the minimizing one second. These codes must */
689      OP_TYPEMINPLUS,    /* 59 be in exactly the same order as those above. */
690      OP_TYPEQUERY,      /* 60 This set applies to character types such as \d */
691      OP_TYPEMINQUERY,   /* 61 */
692    
693      OP_TYPEUPTO,       /* 62 From 0 to n matches */
694      OP_TYPEMINUPTO,    /* 63 */
695      OP_TYPEEXACT,      /* 64 Exactly n matches */
696    
697      OP_TYPEPOSSTAR,    /* 65 Possessified versions */
698      OP_TYPEPOSPLUS,    /* 66 */
699      OP_TYPEPOSQUERY,   /* 67 */
700      OP_TYPEPOSUPTO,    /* 68 */
701    
702      OP_CRSTAR,         /* 69 The maximizing and minimizing versions of */
703      OP_CRMINSTAR,      /* 70 all these opcodes must come in pairs, with */
704      OP_CRPLUS,         /* 71 the minimizing one second. These codes must */
705      OP_CRMINPLUS,      /* 72 be in exactly the same order as those above. */
706      OP_CRQUERY,        /* 73 These are for character classes and back refs */
707      OP_CRMINQUERY,     /* 74 */
708      OP_CRRANGE,        /* 75 These are different to the three sets above. */
709      OP_CRMINRANGE,     /* 76 */
710    
711    OP_CLASS,          /* 59 Match a character class, chars < 256 only */    OP_CLASS,          /* 77 Match a character class, chars < 256 only */
712    OP_NCLASS,         /* 60 Same, but the bitmap was created from a negative    OP_NCLASS,         /* 78 Same, but the bitmap was created from a negative
713                             class - the difference is relevant only when a UTF-8                             class - the difference is relevant only when a UTF-8
714                             character > 255 is encountered. */                             character > 255 is encountered. */
715    
716    OP_XCLASS,         /* 61 Extended class for handling UTF-8 chars within the    OP_XCLASS,         /* 79 Extended class for handling UTF-8 chars within the
717                             class. This does both positive and negative. */                             class. This does both positive and negative. */
718    
719    OP_REF,            /* 62 Match a back reference */    OP_REF,            /* 80 Match a back reference */
720    OP_RECURSE,        /* 63 Match a numbered subpattern (possibly recursive) */    OP_RECURSE,        /* 81 Match a numbered subpattern (possibly recursive) */
721    OP_CALLOUT,        /* 64 Call out to external function if provided */    OP_CALLOUT,        /* 82 Call out to external function if provided */
722    
723    OP_ALT,            /* 65 Start of alternation */    OP_ALT,            /* 83 Start of alternation */
724    OP_KET,            /* 66 End of group that doesn't have an unbounded repeat */    OP_KET,            /* 84 End of group that doesn't have an unbounded repeat */
725    OP_KETRMAX,        /* 67 These two must remain together and in this */    OP_KETRMAX,        /* 85 These two must remain together and in this */
726    OP_KETRMIN,        /* 68 order. They are for groups the repeat for ever. */    OP_KETRMIN,        /* 86 order. They are for groups the repeat for ever. */
   
   /* The assertions must come before ONCE and COND */  
   
   OP_ASSERT,         /* 69 Positive lookahead */  
   OP_ASSERT_NOT,     /* 70 Negative lookahead */  
   OP_ASSERTBACK,     /* 71 Positive lookbehind */  
   OP_ASSERTBACK_NOT, /* 72 Negative lookbehind */  
   OP_REVERSE,        /* 73 Move pointer back - used in lookbehind assertions */  
   
   /* ONCE and COND must come after the assertions, with ONCE first, as there's  
   a test for >= ONCE for a subpattern that isn't an assertion. */  
   
   OP_ONCE,           /* 74 Once matched, don't back up into the subpattern */  
   OP_COND,           /* 75 Conditional group */  
   OP_CREF,           /* 76 Used to hold an extraction string number (cond ref) */  
   
   OP_BRAZERO,        /* 77 These two must remain together and in this */  
   OP_BRAMINZERO,     /* 78 order. */  
   
   OP_BRANUMBER,      /* 79 Used for extracting brackets whose number is greater  
                            than can fit into an opcode. */  
   
   OP_BRA             /* 80 This and greater values are used for brackets that  
                            extract substrings up to EXTRACT_BASIC_MAX. After  
                            that, use is made of OP_BRANUMBER. */  
 };  
727    
728  /* WARNING WARNING WARNING: There is an implicit assumption in pcre.c and    /* The assertions must come before BRA, CBRA, ONCE, and COND.*/
 study.c that all opcodes are less than 128 in value. This makes handling UTF-8  
 character sequences easier. */  
   
 /* The highest extraction number before we have to start using additional  
 bytes. (Originally PCRE didn't have support for extraction counts highter than  
 this number.) The value is limited by the number of opcodes left after OP_BRA,  
 i.e. 255 - OP_BRA. We actually set it a bit lower to leave room for additional  
 opcodes. */  
729    
730  #define EXTRACT_BASIC_MAX  100    OP_ASSERT,         /* 87 Positive lookahead */
731      OP_ASSERT_NOT,     /* 88 Negative lookahead */
732      OP_ASSERTBACK,     /* 89 Positive lookbehind */
733      OP_ASSERTBACK_NOT, /* 90 Negative lookbehind */
734      OP_REVERSE,        /* 91 Move pointer back - used in lookbehind assertions */
735    
736      /* ONCE, BRA, CBRA, and COND must come after the assertions, with ONCE first,
737      as there's a test for >= ONCE for a subpattern that isn't an assertion. */
738    
739      OP_ONCE,           /* 92 Atomic group */
740      OP_BRA,            /* 93 Start of non-capturing bracket */
741      OP_CBRA,           /* 94 Start of capturing bracket */
742      OP_COND,           /* 95 Conditional group */
743    
744      /* These three must follow the previous three, in the same order. There's a
745      check for >= SBRA to distinguish the two sets. */
746    
747      OP_SBRA,           /* 96 Start of non-capturing bracket, check empty  */
748      OP_SCBRA,          /* 97 Start of capturing bracket, check empty */
749      OP_SCOND,          /* 98 Conditional group, check empty */
750    
751      OP_CREF,           /* 99 Used to hold a capture number as condition */
752      OP_RREF,           /* 100 Used to hold a recursion number as condition */
753      OP_DEF,            /* 101 The DEFINE condition */
754    
755      OP_BRAZERO,        /* 102 These two must remain together and in this */
756      OP_BRAMINZERO,     /* 103 order. */
757    
758      /* These are backtracking control verbs */
759    
760      OP_PRUNE,          /* 104 */
761      OP_SKIP,           /* 105 */
762      OP_THEN,           /* 106 */
763      OP_COMMIT,         /* 107 */
764    
765      /* These are forced failure and success verbs */
766    
767      OP_FAIL,           /* 108 */
768      OP_ACCEPT          /* 109 */
769    };
770    
771    
772  /* This macro defines textual names for all the opcodes. These are used only  /* This macro defines textual names for all the opcodes. These are used only
773  for debugging. The macro is referenced only in pcre_printint.c. */  for debugging. The macro is referenced only in pcre_printint.c. */
774    
775  #define OP_NAME_LIST \  #define OP_NAME_LIST \
776    "End", "\\A", "\\G", "\\B", "\\b", "\\D", "\\d",                \    "End", "\\A", "\\G", "\\K", "\\B", "\\b", "\\D", "\\d",         \
777    "\\S", "\\s", "\\W", "\\w", "Any", "Anybyte",                   \    "\\S", "\\s", "\\W", "\\w", "Any", "Anybyte",                   \
778    "notprop", "prop", "extuni",                                    \    "notprop", "prop", "\\R", "\\H", "\\h", "\\V", "\\v",           \
779    "\\Z", "\\z",                                                   \    "extuni",  "\\Z", "\\z",                                        \
780    "Opt", "^", "$", "char", "charnc", "not",                       \    "Opt", "^", "$", "char", "charnc", "not",                       \
781    "*", "*?", "+", "+?", "?", "??", "{", "{", "{",                 \    "*", "*?", "+", "+?", "?", "??", "{", "{", "{",                 \
782      "*+","++", "?+", "{",                                           \
783    "*", "*?", "+", "+?", "?", "??", "{", "{", "{",                 \    "*", "*?", "+", "+?", "?", "??", "{", "{", "{",                 \
784      "*+","++", "?+", "{",                                           \
785    "*", "*?", "+", "+?", "?", "??", "{", "{", "{",                 \    "*", "*?", "+", "+?", "?", "??", "{", "{", "{",                 \
786      "*+","++", "?+", "{",                                           \
787    "*", "*?", "+", "+?", "?", "??", "{", "{",                      \    "*", "*?", "+", "+?", "?", "??", "{", "{",                      \
788    "class", "nclass", "xclass", "Ref", "Recurse", "Callout",       \    "class", "nclass", "xclass", "Ref", "Recurse", "Callout",       \
789    "Alt", "Ket", "KetRmax", "KetRmin", "Assert", "Assert not",     \    "Alt", "Ket", "KetRmax", "KetRmin", "Assert", "Assert not",     \
790    "AssertB", "AssertB not", "Reverse", "Once", "Cond", "Cond ref",\    "AssertB", "AssertB not", "Reverse",                            \
791    "Brazero", "Braminzero", "Branumber", "Bra"    "Once", "Bra", "CBra", "Cond", "SBra", "SCBra", "SCond",        \
792      "Cond ref", "Cond rec", "Cond def", "Brazero", "Braminzero",    \
793      "*PRUNE", "*SKIP", "*THEN", "*COMMIT", "*FAIL", "*ACCEPT"
794    
795    
796  /* This macro defines the length of fixed length operations in the compiled  /* This macro defines the length of fixed length operations in the compiled
# Line 668  in UTF-8 mode. The code that uses this t Line 804  in UTF-8 mode. The code that uses this t
804    
805  #define OP_LENGTHS \  #define OP_LENGTHS \
806    1,                             /* End                                    */ \    1,                             /* End                                    */ \
807    1, 1, 1, 1, 1, 1, 1, 1, 1, 1,  /* \A, \G, \B, \B, \D, \d, \S, \s, \W, \w */ \    1, 1, 1, 1, 1,                 /* \A, \G, \K, \B, \b                     */ \
808      1, 1, 1, 1, 1, 1,              /* \D, \d, \S, \s, \W, \w                 */ \
809    1, 1,                          /* Any, Anybyte                           */ \    1, 1,                          /* Any, Anybyte                           */ \
810    3, 3, 1,                       /* NOTPROP, PROP, EXTUNI                  */ \    3, 3, 1,                       /* NOTPROP, PROP, EXTUNI                  */ \
811      1, 1, 1, 1, 1,                 /* \R, \H, \h, \V, \v                     */ \
812    1, 1, 2, 1, 1,                 /* \Z, \z, Opt, ^, $                      */ \    1, 1, 2, 1, 1,                 /* \Z, \z, Opt, ^, $                      */ \
813    2,                             /* Char  - the minimum length             */ \    2,                             /* Char  - the minimum length             */ \
814    2,                             /* Charnc  - the minimum length           */ \    2,                             /* Charnc  - the minimum length           */ \
# Line 678  in UTF-8 mode. The code that uses this t Line 816  in UTF-8 mode. The code that uses this t
816    /* Positive single-char repeats                            ** These are  */ \    /* Positive single-char repeats                            ** These are  */ \
817    2, 2, 2, 2, 2, 2,              /* *, *?, +, +?, ?, ??      ** minima in  */ \    2, 2, 2, 2, 2, 2,              /* *, *?, +, +?, ?, ??      ** minima in  */ \
818    4, 4, 4,                       /* upto, minupto, exact     ** UTF-8 mode */ \    4, 4, 4,                       /* upto, minupto, exact     ** UTF-8 mode */ \
819      2, 2, 2, 4,                    /* *+, ++, ?+, upto+                      */ \
820    /* Negative single-char repeats - only for chars < 256                   */ \    /* Negative single-char repeats - only for chars < 256                   */ \
821    2, 2, 2, 2, 2, 2,              /* NOT *, *?, +, +?, ?, ??                */ \    2, 2, 2, 2, 2, 2,              /* NOT *, *?, +, +?, ?, ??                */ \
822    4, 4, 4,                       /* NOT upto, minupto, exact               */ \    4, 4, 4,                       /* NOT upto, minupto, exact               */ \
823      2, 2, 2, 4,                    /* Possessive *, +, ?, upto               */ \
824    /* Positive type repeats                                                 */ \    /* Positive type repeats                                                 */ \
825    2, 2, 2, 2, 2, 2,              /* Type *, *?, +, +?, ?, ??               */ \    2, 2, 2, 2, 2, 2,              /* Type *, *?, +, +?, ?, ??               */ \
826    4, 4, 4,                       /* Type upto, minupto, exact              */ \    4, 4, 4,                       /* Type upto, minupto, exact              */ \
827      2, 2, 2, 4,                    /* Possessive *+, ++, ?+, upto+           */ \
828    /* Character class & ref repeats                                         */ \    /* Character class & ref repeats                                         */ \
829    1, 1, 1, 1, 1, 1,              /* *, *?, +, +?, ?, ??                    */ \    1, 1, 1, 1, 1, 1,              /* *, *?, +, +?, ?, ??                    */ \
830    5, 5,                          /* CRRANGE, CRMINRANGE                    */ \    5, 5,                          /* CRRANGE, CRMINRANGE                    */ \
# Line 702  in UTF-8 mode. The code that uses this t Line 843  in UTF-8 mode. The code that uses this t
843    1+LINK_SIZE,                   /* Assert behind                          */ \    1+LINK_SIZE,                   /* Assert behind                          */ \
844    1+LINK_SIZE,                   /* Assert behind not                      */ \    1+LINK_SIZE,                   /* Assert behind not                      */ \
845    1+LINK_SIZE,                   /* Reverse                                */ \    1+LINK_SIZE,                   /* Reverse                                */ \
846    1+LINK_SIZE,                   /* Once                                   */ \    1+LINK_SIZE,                   /* ONCE                                   */ \
847      1+LINK_SIZE,                   /* BRA                                    */ \
848      3+LINK_SIZE,                   /* CBRA                                   */ \
849    1+LINK_SIZE,                   /* COND                                   */ \    1+LINK_SIZE,                   /* COND                                   */ \
850      1+LINK_SIZE,                   /* SBRA                                   */ \
851      3+LINK_SIZE,                   /* SCBRA                                  */ \
852      1+LINK_SIZE,                   /* SCOND                                  */ \
853    3,                             /* CREF                                   */ \    3,                             /* CREF                                   */ \
854      3,                             /* RREF                                   */ \
855      1,                             /* DEF                                    */ \
856    1, 1,                          /* BRAZERO, BRAMINZERO                    */ \    1, 1,                          /* BRAZERO, BRAMINZERO                    */ \
857    3,                             /* BRANUMBER                              */ \    1, 1, 1, 1,                    /* PRUNE, SKIP, THEN, COMMIT,             */ \
858    1+LINK_SIZE                    /* BRA                                    */ \    1, 1                           /* FAIL, ACCEPT                           */
859    
860    
861  /* A magic value for OP_CREF to indicate the "in recursion" condition. */  /* A magic value for OP_RREF to indicate the "any recursion" condition. */
862    
863  #define CREF_RECURSE  0xffff  #define RREF_ANY  0xffff
864    
865  /* Error code numbers. They are given names so that they can more easily be  /* Error code numbers. They are given names so that they can more easily be
866  tracked. */  tracked. */
# Line 722  enum { ERR0, ERR1, ERR2, ERR3, ERR4, Line 870  enum { ERR0, ERR1, ERR2, ERR3, ERR4,
870         ERR20, ERR21, ERR22, ERR23, ERR24, ERR25, ERR26, ERR27, ERR28, ERR29,         ERR20, ERR21, ERR22, ERR23, ERR24, ERR25, ERR26, ERR27, ERR28, ERR29,
871         ERR30, ERR31, ERR32, ERR33, ERR34, ERR35, ERR36, ERR37, ERR38, ERR39,         ERR30, ERR31, ERR32, ERR33, ERR34, ERR35, ERR36, ERR37, ERR38, ERR39,
872         ERR40, ERR41, ERR42, ERR43, ERR44, ERR45, ERR46, ERR47, ERR48, ERR49,         ERR40, ERR41, ERR42, ERR43, ERR44, ERR45, ERR46, ERR47, ERR48, ERR49,
873         ERR50, ERR51 };         ERR50, ERR51, ERR52, ERR53, ERR54, ERR55, ERR56, ERR57, ERR58, ERR59,
874           ERR60 };
875    
876  /* The real format of the start of the pcre block; the index of names and the  /* The real format of the start of the pcre block; the index of names and the
877  code vector run on as long as necessary after the end. We store an explicit  code vector run on as long as necessary after the end. We store an explicit
# Line 777  typedef struct compile_data { Line 926  typedef struct compile_data {
926    const uschar *fcc;            /* Points to case-flipping table */    const uschar *fcc;            /* Points to case-flipping table */
927    const uschar *cbits;          /* Points to character type table */    const uschar *cbits;          /* Points to character type table */
928    const uschar *ctypes;         /* Points to table of type maps */    const uschar *ctypes;         /* Points to table of type maps */
929      const uschar *start_workspace;/* The start of working space */
930    const uschar *start_code;     /* The start of the compiled code */    const uschar *start_code;     /* The start of the compiled code */
931    const uschar *start_pattern;  /* The start of the pattern */    const uschar *start_pattern;  /* The start of the pattern */
932      const uschar *end_pattern;    /* The end of the pattern */
933      uschar *hwm;                  /* High watermark of workspace */
934    uschar *name_table;           /* The name/number table */    uschar *name_table;           /* The name/number table */
935    int  names_found;             /* Number of entries so far */    int  names_found;             /* Number of entries so far */
936    int  name_entry_size;         /* Size of each entry */    int  name_entry_size;         /* Size of each entry */
937      int  bracount;                /* Count of capturing parens */
938    int  top_backref;             /* Maximum back reference */    int  top_backref;             /* Maximum back reference */
939    unsigned int backref_map;     /* Bitmap of low back refs */    unsigned int backref_map;     /* Bitmap of low back refs */
940      int  external_options;        /* External (initial) options */
941    int  req_varyopt;             /* "After variable item" flag for reqbyte */    int  req_varyopt;             /* "After variable item" flag for reqbyte */
942    BOOL nopartial;               /* Set TRUE if partial won't work */    BOOL nopartial;               /* Set TRUE if partial won't work */
943    int  nllen;                   /* 1 or 2 for newline string length */    BOOL had_accept;              /* (*ACCEPT) encountered */
944    uschar nl[4];                 /* Newline string */    int  nltype;                  /* Newline type */
945      int  nllen;                   /* Newline string length */
946      uschar nl[4];                 /* Newline string when fixed length */
947  } compile_data;  } compile_data;
948    
949  /* Structure for maintaining a chain of pointers to the currently incomplete  /* Structure for maintaining a chain of pointers to the currently incomplete
# Line 805  typedef struct recursion_info { Line 961  typedef struct recursion_info {
961    struct recursion_info *prevrec; /* Previous recursion record (or NULL) */    struct recursion_info *prevrec; /* Previous recursion record (or NULL) */
962    int group_num;                /* Number of group that was called */    int group_num;                /* Number of group that was called */
963    const uschar *after_call;     /* "Return value": points after the call in the expr */    const uschar *after_call;     /* "Return value": points after the call in the expr */
964    USPTR save_start;             /* Old value of md->start_match */    USPTR save_start;             /* Old value of mstart */
965    int *offset_save;             /* Pointer to start of saved offsets */    int *offset_save;             /* Pointer to start of saved offsets */
966    int saved_max;                /* Number of saved offsets */    int saved_max;                /* Number of saved offsets */
967  } recursion_info;  } recursion_info;
968    
969  /* When compiling in a mode that doesn't use recursive calls to match(),  /* Structure for building a chain of data for holding the values of the subject
970  a structure is used to remember local variables on the heap. It is defined in  pointer at the start of each subpattern, so as to detect when an empty string
971  pcre_exec.c, close to the match() function, so that it is easy to keep it in  has been matched by a subpattern - to break infinite loops. */
972  step with any changes of local variable. However, the pointer to the current  
973  frame must be saved in some "static" place over a longjmp(). We declare the  typedef struct eptrblock {
974  structure here so that we can put a pointer in the match_data structure. NOTE:    struct eptrblock *epb_prev;
975  This isn't used for a "normal" compilation of pcre. */    USPTR epb_saved_eptr;
976    } eptrblock;
977    
 struct heapframe;  
978    
979  /* Structure for passing "static" information around between the functions  /* Structure for passing "static" information around between the functions
980  doing traditional NFA matching, so that they are thread-safe. */  doing traditional NFA matching, so that they are thread-safe. */
# Line 830  typedef struct match_data { Line 986  typedef struct match_data {
986    int   *offset_vector;         /* Offset vector */    int   *offset_vector;         /* Offset vector */
987    int    offset_end;            /* One past the end */    int    offset_end;            /* One past the end */
988    int    offset_max;            /* The maximum usable for return data */    int    offset_max;            /* The maximum usable for return data */
989    int    nllen;                 /* 1 or 2 for newline string length */    int    nltype;                /* Newline type */
990    uschar nl[4];                 /* Newline string */    int    nllen;                 /* Newline string length */
991      uschar nl[4];                 /* Newline string when fixed */
992    const uschar *lcc;            /* Points to lower casing table */    const uschar *lcc;            /* Points to lower casing table */
993    const uschar *ctypes;         /* Points to table of type maps */    const uschar *ctypes;         /* Points to table of type maps */
994    BOOL   offset_overflow;       /* Set if too many extractions */    BOOL   offset_overflow;       /* Set if too many extractions */
# Line 845  typedef struct match_data { Line 1002  typedef struct match_data {
1002    const uschar *start_code;     /* For use when recursing */    const uschar *start_code;     /* For use when recursing */
1003    USPTR  start_subject;         /* Start of the subject string */    USPTR  start_subject;         /* Start of the subject string */
1004    USPTR  end_subject;           /* End of the subject string */    USPTR  end_subject;           /* End of the subject string */
1005    USPTR  start_match;           /* Start of this match attempt */    USPTR  start_match_ptr;       /* Start of matched string */
1006    USPTR  end_match_ptr;         /* Subject position at end match */    USPTR  end_match_ptr;         /* Subject position at end match */
1007    int    end_offset_top;        /* Highwater mark at end of match */    int    end_offset_top;        /* Highwater mark at end of match */
1008    int    capture_last;          /* Most recent capture number */    int    capture_last;          /* Most recent capture number */
1009    int    start_offset;          /* The start offset value */    int    start_offset;          /* The start offset value */
1010      eptrblock *eptrchain;         /* Chain of eptrblocks for tail recursions */
1011      int    eptrn;                 /* Next free eptrblock */
1012    recursion_info *recursive;    /* Linked list of recursion data */    recursion_info *recursive;    /* Linked list of recursion data */
1013    void  *callout_data;          /* To pass back to callouts */    void  *callout_data;          /* To pass back to callouts */
   struct heapframe *thisframe;  /* Used only when compiling for no recursion */  
1014  } match_data;  } match_data;
1015    
1016  /* A similar structure is used for the same purpose by the DFA matching  /* A similar structure is used for the same purpose by the DFA matching
# Line 865  typedef struct dfa_match_data { Line 1023  typedef struct dfa_match_data {
1023    const uschar *tables;         /* Character tables */    const uschar *tables;         /* Character tables */
1024    int   moptions;               /* Match options */    int   moptions;               /* Match options */
1025    int   poptions;               /* Pattern options */    int   poptions;               /* Pattern options */
1026    int    nllen;                 /* 1 or 2 for newline string length */    int    nltype;                /* Newline type */
1027    uschar nl[4];                 /* Newline string */    int    nllen;                 /* Newline string length */
1028      uschar nl[4];                 /* Newline string when fixed */
1029    void  *callout_data;          /* To pass back to callouts */    void  *callout_data;          /* To pass back to callouts */
1030  } dfa_match_data;  } dfa_match_data;
1031    
# Line 937  extern const uschar _pcre_OP_lengths[]; Line 1096  extern const uschar _pcre_OP_lengths[];
1096  one of the exported public functions. They have to be "external" in the C  one of the exported public functions. They have to be "external" in the C
1097  sense, but are not part of the PCRE public API. */  sense, but are not part of the PCRE public API. */
1098    
1099  extern int         _pcre_ord2utf8(int, uschar *);  extern BOOL         _pcre_is_newline(const uschar *, int, const uschar *,
1100  extern real_pcre * _pcre_try_flipped(const real_pcre *, real_pcre *,                        int *, BOOL);
1101                       const pcre_study_data *, pcre_study_data *);  extern int          _pcre_ord2utf8(int, uschar *);
1102  extern int         _pcre_ucp_findprop(const unsigned int, int *, int *);  extern real_pcre   *_pcre_try_flipped(const real_pcre *, real_pcre *,
1103  extern int         _pcre_ucp_othercase(const int);                        const pcre_study_data *, pcre_study_data *);
1104  extern int         _pcre_valid_utf8(const uschar *, int);  extern int          _pcre_ucp_findprop(const unsigned int, int *, int *);
1105  extern BOOL        _pcre_xclass(int, const uschar *);  extern unsigned int _pcre_ucp_othercase(const unsigned int);
1106    extern int          _pcre_valid_utf8(const uschar *, int);
1107    extern BOOL         _pcre_was_newline(const uschar *, int, const uschar *,
1108                          int *, BOOL);
1109    extern BOOL         _pcre_xclass(int, const uschar *);
1110    
1111  #endif  #endif
1112    

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