/[pcre]/code/trunk/pcre_internal.h
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revision 87 by nigel, Sat Feb 24 21:41:21 2007 UTC revision 199 by ph10, Tue Jul 31 14:39:09 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    /* This is an unsigned int value that no character can ever have. UTF-8
167    characters only go up to 0x7fffffff (though Unicode doesn't go beyond
168    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) \
185      ((NLBLOCK->nltype != NLTYPE_FIXED)? \
186        ((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()
212  to process subject strings that are discontinuous by using a smart pointer  to process subject strings that are discontinuous by using a smart pointer
# Line 131  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 142  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 151  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  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 270  we know we are in UTF-8 mode. */ Line 375  we know we are in UTF-8 mode. */
375    
376  #define GETCHAR(c, eptr) \  #define GETCHAR(c, eptr) \
377    c = *eptr; \    c = *eptr; \
378    if ((c & 0xc0) == 0xc0) \    if (c >= 0xc0) \
379      { \      { \
380      int gcii; \      int gcii; \
381      int gcaa = _pcre_utf8_table4[c & 0x3f];  /* Number of additional bytes */ \      int gcaa = _pcre_utf8_table4[c & 0x3f];  /* Number of additional bytes */ \
# Line 288  pointer. */ Line 393  pointer. */
393    
394  #define GETCHARTEST(c, eptr) \  #define GETCHARTEST(c, eptr) \
395    c = *eptr; \    c = *eptr; \
396    if (utf8 && (c & 0xc0) == 0xc0) \    if (utf8 && c >= 0xc0) \
397      { \      { \
398      int gcii; \      int gcii; \
399      int gcaa = _pcre_utf8_table4[c & 0x3f];  /* Number of additional bytes */ \      int gcaa = _pcre_utf8_table4[c & 0x3f];  /* Number of additional bytes */ \
# Line 306  know we are in UTF-8 mode. */ Line 411  know we are in UTF-8 mode. */
411    
412  #define GETCHARINC(c, eptr) \  #define GETCHARINC(c, eptr) \
413    c = *eptr++; \    c = *eptr++; \
414    if ((c & 0xc0) == 0xc0) \    if (c >= 0xc0) \
415      { \      { \
416      int gcaa = _pcre_utf8_table4[c & 0x3f];  /* Number of additional bytes */ \      int gcaa = _pcre_utf8_table4[c & 0x3f];  /* Number of additional bytes */ \
417      int gcss = 6*gcaa; \      int gcss = 6*gcaa; \
# Line 322  know we are in UTF-8 mode. */ Line 427  know we are in UTF-8 mode. */
427    
428  #define GETCHARINCTEST(c, eptr) \  #define GETCHARINCTEST(c, eptr) \
429    c = *eptr++; \    c = *eptr++; \
430    if (utf8 && (c & 0xc0) == 0xc0) \    if (utf8 && c >= 0xc0) \
431      { \      { \
432      int gcaa = _pcre_utf8_table4[c & 0x3f];  /* Number of additional bytes */ \      int gcaa = _pcre_utf8_table4[c & 0x3f];  /* Number of additional bytes */ \
433      int gcss = 6*gcaa; \      int gcss = 6*gcaa; \
# Line 339  if there are extra bytes. This is called Line 444  if there are extra bytes. This is called
444    
445  #define GETCHARLEN(c, eptr, len) \  #define GETCHARLEN(c, eptr, len) \
446    c = *eptr; \    c = *eptr; \
447    if ((c & 0xc0) == 0xc0) \    if (c >= 0xc0) \
448      { \      { \
449      int gcii; \      int gcii; \
450      int gcaa = _pcre_utf8_table4[c & 0x3f];  /* Number of additional bytes */ \      int gcaa = _pcre_utf8_table4[c & 0x3f];  /* Number of additional bytes */ \
# Line 373  Standard C system should have one. */ Line 478  Standard C system should have one. */
478    
479  #define PCRE_IMS (PCRE_CASELESS|PCRE_MULTILINE|PCRE_DOTALL)  #define PCRE_IMS (PCRE_CASELESS|PCRE_MULTILINE|PCRE_DOTALL)
480    
481  /* Private options flags start at the most significant end of the four bytes,  /* Private options flags start at the most significant end of the four bytes.
482  but skip the top bit so we can use ints for convenience without getting tangled  The public options defined in pcre.h start at the least significant end. Make
483  with negative values. The public options defined in pcre.h start at the least  sure they don't overlap! The bits are getting a bit scarce now -- when we run
484  significant end. Make sure they don't overlap! */  out, there is a dummy word in the structure that could be used for the private
485    bits. */
486    
487    #define PCRE_NOPARTIAL     0x80000000  /* can't use partial with this regex */
488  #define PCRE_FIRSTSET      0x40000000  /* first_byte is set */  #define PCRE_FIRSTSET      0x40000000  /* first_byte is set */
489  #define PCRE_REQCHSET      0x20000000  /* req_byte is set */  #define PCRE_REQCHSET      0x20000000  /* req_byte is set */
490  #define PCRE_STARTLINE     0x10000000  /* start after \n for multiline */  #define PCRE_STARTLINE     0x10000000  /* start after \n for multiline */
491  #define PCRE_ICHANGED      0x08000000  /* i option changes within regex */  #define PCRE_JCHANGED      0x08000000  /* j option changes within regex */
 #define PCRE_NOPARTIAL     0x04000000  /* can't use partial with this regex */  
492    
493  /* Options for the "extra" block produced by pcre_study(). */  /* Options for the "extra" block produced by pcre_study(). */
494    
# Line 391  significant end. Make sure they don't ov Line 497  significant end. Make sure they don't ov
497  /* Masks for identifying the public options that are permitted at compile  /* Masks for identifying the public options that are permitted at compile
498  time, run time, or study time, respectively. */  time, run time, or study time, respectively. */
499    
500    #define PCRE_NEWLINE_BITS (PCRE_NEWLINE_CR|PCRE_NEWLINE_LF|PCRE_NEWLINE_ANY| \
501                               PCRE_NEWLINE_ANYCRLF)
502    
503  #define PUBLIC_OPTIONS \  #define PUBLIC_OPTIONS \
504    (PCRE_CASELESS|PCRE_EXTENDED|PCRE_ANCHORED|PCRE_MULTILINE| \    (PCRE_CASELESS|PCRE_EXTENDED|PCRE_ANCHORED|PCRE_MULTILINE| \
505     PCRE_DOTALL|PCRE_DOLLAR_ENDONLY|PCRE_EXTRA|PCRE_UNGREEDY|PCRE_UTF8| \     PCRE_DOTALL|PCRE_DOLLAR_ENDONLY|PCRE_EXTRA|PCRE_UNGREEDY|PCRE_UTF8| \
506     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| \
507       PCRE_DUPNAMES|PCRE_NEWLINE_BITS)
508    
509  #define PUBLIC_EXEC_OPTIONS \  #define PUBLIC_EXEC_OPTIONS \
510    (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NO_UTF8_CHECK| \    (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NO_UTF8_CHECK| \
511     PCRE_PARTIAL)     PCRE_PARTIAL|PCRE_NEWLINE_BITS)
512    
513  #define PUBLIC_DFA_EXEC_OPTIONS \  #define PUBLIC_DFA_EXEC_OPTIONS \
514    (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NO_UTF8_CHECK| \    (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NO_UTF8_CHECK| \
515     PCRE_PARTIAL|PCRE_DFA_SHORTEST|PCRE_DFA_RESTART)     PCRE_PARTIAL|PCRE_DFA_SHORTEST|PCRE_DFA_RESTART|PCRE_NEWLINE_BITS)
516    
517  #define PUBLIC_STUDY_OPTIONS 0   /* None defined */  #define PUBLIC_STUDY_OPTIONS 0   /* None defined */
518    
# Line 434  typedef int BOOL; Line 544  typedef int BOOL;
544  #define FALSE   0  #define FALSE   0
545  #define TRUE    1  #define TRUE    1
546    
547  /* 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). */  
548    
549  #ifndef ESC_e  #ifndef ESC_e
550  #define ESC_e 27  #define ESC_e 27
# Line 447  ESC_n is defined as yet another macro, w Line 555  ESC_n is defined as yet another macro, w
555  #endif  #endif
556    
557  #ifndef ESC_n  #ifndef ESC_n
558  #define ESC_n NEWLINE  #define ESC_n '\n'
559  #endif  #endif
560    
561  #ifndef ESC_r  #ifndef ESC_r
# Line 486  value such as \n. They must have non-zer Line 594  value such as \n. They must have non-zer
594  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
595  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
596  corresponds to "." rather than an escape sequence. The final one must be  corresponds to "." rather than an escape sequence. The final one must be
597  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).
598  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
599  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
600  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
601  character, that code will have to change. */  character, that code will have to change. */
602    
603  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,
604         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,
605         ESC_Q, ESC_REF };         ESC_V, ESC_v, ESC_X, ESC_Z, ESC_z, ESC_E, ESC_Q, ESC_k, ESC_REF };
606    
607    
608  /* Opcode table: OP_BRA must be last, as all values >= it are used for brackets  /* Opcode table: OP_BRA must be last, as all values >= it are used for brackets
609  that extract substrings. 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
610  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.
611  Note that whenever this list is updated, the two macro definitions that follow  
612  must also be updated to match. */  To keep stored, compiled patterns compatible, new opcodes should be added
613    immediately before OP_BRA, where (since release 7.0) a gap is left for this
614    purpose.
615    
616    *** NOTE NOTE NOTE *** Whenever this list is updated, the two macro definitions
617    that follow must also be updated to match. There is also a table called
618    "coptable" in pcre_dfa_exec.c that must be updated. */
619    
620  enum {  enum {
621    OP_END,            /* 0 End of pattern */    OP_END,            /* 0 End of pattern */
# Line 509  enum { Line 624  enum {
624    
625    OP_SOD,            /* 1 Start of data: \A */    OP_SOD,            /* 1 Start of data: \A */
626    OP_SOM,            /* 2 Start of match (subject + offset): \G */    OP_SOM,            /* 2 Start of match (subject + offset): \G */
627    OP_NOT_WORD_BOUNDARY,  /*  3 \B */    OP_SET_SOM,        /* 3 Set start of match (\K) */
628    OP_WORD_BOUNDARY,      /*  4 \b */    OP_NOT_WORD_BOUNDARY,  /*  4 \B */
629    OP_NOT_DIGIT,          /*  5 \D */    OP_WORD_BOUNDARY,      /*  5 \b */
630    OP_DIGIT,              /*  6 \d */    OP_NOT_DIGIT,          /*  6 \D */
631    OP_NOT_WHITESPACE,     /*  7 \S */    OP_DIGIT,              /*  7 \d */
632    OP_WHITESPACE,         /*  8 \s */    OP_NOT_WHITESPACE,     /*  8 \S */
633    OP_NOT_WORDCHAR,       /*  9 \W */    OP_WHITESPACE,         /*  9 \s */
634    OP_WORDCHAR,           /* 10 \w */    OP_NOT_WORDCHAR,       /* 10 \W */
635    OP_ANY,            /* 11 Match any character */    OP_WORDCHAR,           /* 11 \w */
636    OP_ANYBYTE,        /* 12 Match any byte (\C); different to OP_ANY for UTF-8 */    OP_ANY,            /* 12 Match any character */
637    OP_NOTPROP,        /* 13 \P (not Unicode property) */    OP_ANYBYTE,        /* 13 Match any byte (\C); different to OP_ANY for UTF-8 */
638    OP_PROP,           /* 14 \p (Unicode property) */    OP_NOTPROP,        /* 14 \P (not Unicode property) */
639    OP_EXTUNI,         /* 15 \X (extended Unicode sequence */    OP_PROP,           /* 15 \p (Unicode property) */
640    OP_EODN,           /* 16 End of data or \n at end of data: \Z. */    OP_ANYNL,          /* 16 \R (any newline sequence) */
641    OP_EOD,            /* 17 End of data: \z */    OP_NOT_HSPACE,     /* 17 \H (not horizontal whitespace) */
642      OP_HSPACE,         /* 18 \h (horizontal whitespace) */
643    OP_OPT,            /* 18 Set runtime options */    OP_NOT_VSPACE,     /* 19 \V (not vertical whitespace) */
644    OP_CIRC,           /* 19 Start of line - varies with multiline switch */    OP_VSPACE,         /* 20 \v (vertical whitespace) */
645    OP_DOLL,           /* 20 End of line - varies with multiline switch */    OP_EXTUNI,         /* 21 \X (extended Unicode sequence */
646    OP_CHAR,           /* 21 Match one character, casefully */    OP_EODN,           /* 22 End of data or \n at end of data: \Z. */
647    OP_CHARNC,         /* 22 Match one character, caselessly */    OP_EOD,            /* 23 End of data: \z */
648    OP_NOT,            /* 23 Match anything but the following char */  
649      OP_OPT,            /* 24 Set runtime options */
650    OP_STAR,           /* 24 The maximizing and minimizing versions of */    OP_CIRC,           /* 25 Start of line - varies with multiline switch */
651    OP_MINSTAR,        /* 25 all these opcodes must come in pairs, with */    OP_DOLL,           /* 26 End of line - varies with multiline switch */
652    OP_PLUS,           /* 26 the minimizing one second. */    OP_CHAR,           /* 27 Match one character, casefully */
653    OP_MINPLUS,        /* 27 This first set applies to single characters */    OP_CHARNC,         /* 28 Match one character, caselessly */
654    OP_QUERY,          /* 28 */    OP_NOT,            /* 29 Match one character, not the following one */
655    OP_MINQUERY,       /* 29 */  
656    OP_UPTO,           /* 30 From 0 to n matches */    OP_STAR,           /* 30 The maximizing and minimizing versions of */
657    OP_MINUPTO,        /* 31 */    OP_MINSTAR,        /* 31 these six opcodes must come in pairs, with */
658    OP_EXACT,          /* 32 Exactly n matches */    OP_PLUS,           /* 32 the minimizing one second. */
659      OP_MINPLUS,        /* 33 This first set applies to single characters.*/
660    OP_NOTSTAR,        /* 33 The maximizing and minimizing versions of */    OP_QUERY,          /* 34 */
661    OP_NOTMINSTAR,     /* 34 all these opcodes must come in pairs, with */    OP_MINQUERY,       /* 35 */
662    OP_NOTPLUS,        /* 35 the minimizing one second. */  
663    OP_NOTMINPLUS,     /* 36 This set applies to "not" single characters */    OP_UPTO,           /* 36 From 0 to n matches */
664    OP_NOTQUERY,       /* 37 */    OP_MINUPTO,        /* 37 */
665    OP_NOTMINQUERY,    /* 38 */    OP_EXACT,          /* 38 Exactly n matches */
666    OP_NOTUPTO,        /* 39 From 0 to n matches */  
667    OP_NOTMINUPTO,     /* 40 */    OP_POSSTAR,        /* 39 Possessified star */
668    OP_NOTEXACT,       /* 41 Exactly n matches */    OP_POSPLUS,        /* 40 Possessified plus */
669      OP_POSQUERY,       /* 41 Posesssified query */
670    OP_TYPESTAR,       /* 42 The maximizing and minimizing versions of */    OP_POSUPTO,        /* 42 Possessified upto */
671    OP_TYPEMINSTAR,    /* 43 all these opcodes must come in pairs, with */  
672    OP_TYPEPLUS,       /* 44 the minimizing one second. These codes must */    OP_NOTSTAR,        /* 43 The maximizing and minimizing versions of */
673    OP_TYPEMINPLUS,    /* 45 be in exactly the same order as those above. */    OP_NOTMINSTAR,     /* 44 these six opcodes must come in pairs, with */
674    OP_TYPEQUERY,      /* 46 This set applies to character types such as \d */    OP_NOTPLUS,        /* 45 the minimizing one second. They must be in */
675    OP_TYPEMINQUERY,   /* 47 */    OP_NOTMINPLUS,     /* 46 exactly the same order as those above. */
676    OP_TYPEUPTO,       /* 48 From 0 to n matches */    OP_NOTQUERY,       /* 47 This set applies to "not" single characters. */
677    OP_TYPEMINUPTO,    /* 49 */    OP_NOTMINQUERY,    /* 48 */
678    OP_TYPEEXACT,      /* 50 Exactly n matches */  
679      OP_NOTUPTO,        /* 49 From 0 to n matches */
680    OP_CRSTAR,         /* 51 The maximizing and minimizing versions of */    OP_NOTMINUPTO,     /* 50 */
681    OP_CRMINSTAR,      /* 52 all these opcodes must come in pairs, with */    OP_NOTEXACT,       /* 51 Exactly n matches */
682    OP_CRPLUS,         /* 53 the minimizing one second. These codes must */  
683    OP_CRMINPLUS,      /* 54 be in exactly the same order as those above. */    OP_NOTPOSSTAR,     /* 52 Possessified versions */
684    OP_CRQUERY,        /* 55 These are for character classes and back refs */    OP_NOTPOSPLUS,     /* 53 */
685    OP_CRMINQUERY,     /* 56 */    OP_NOTPOSQUERY,    /* 54 */
686    OP_CRRANGE,        /* 57 These are different to the three sets above. */    OP_NOTPOSUPTO,     /* 55 */
687    OP_CRMINRANGE,     /* 58 */  
688      OP_TYPESTAR,       /* 56 The maximizing and minimizing versions of */
689      OP_TYPEMINSTAR,    /* 57 these six opcodes must come in pairs, with */
690      OP_TYPEPLUS,       /* 58 the minimizing one second. These codes must */
691      OP_TYPEMINPLUS,    /* 59 be in exactly the same order as those above. */
692      OP_TYPEQUERY,      /* 60 This set applies to character types such as \d */
693      OP_TYPEMINQUERY,   /* 61 */
694    
695      OP_TYPEUPTO,       /* 62 From 0 to n matches */
696      OP_TYPEMINUPTO,    /* 63 */
697      OP_TYPEEXACT,      /* 64 Exactly n matches */
698    
699      OP_TYPEPOSSTAR,    /* 65 Possessified versions */
700      OP_TYPEPOSPLUS,    /* 66 */
701      OP_TYPEPOSQUERY,   /* 67 */
702      OP_TYPEPOSUPTO,    /* 68 */
703    
704      OP_CRSTAR,         /* 69 The maximizing and minimizing versions of */
705      OP_CRMINSTAR,      /* 70 all these opcodes must come in pairs, with */
706      OP_CRPLUS,         /* 71 the minimizing one second. These codes must */
707      OP_CRMINPLUS,      /* 72 be in exactly the same order as those above. */
708      OP_CRQUERY,        /* 73 These are for character classes and back refs */
709      OP_CRMINQUERY,     /* 74 */
710      OP_CRRANGE,        /* 75 These are different to the three sets above. */
711      OP_CRMINRANGE,     /* 76 */
712    
713    OP_CLASS,          /* 59 Match a character class, chars < 256 only */    OP_CLASS,          /* 77 Match a character class, chars < 256 only */
714    OP_NCLASS,         /* 60 Same, but the bitmap was created from a negative    OP_NCLASS,         /* 78 Same, but the bitmap was created from a negative
715                             class - the difference is relevant only when a UTF-8                             class - the difference is relevant only when a UTF-8
716                             character > 255 is encountered. */                             character > 255 is encountered. */
717    
718    OP_XCLASS,         /* 61 Extended class for handling UTF-8 chars within the    OP_XCLASS,         /* 79 Extended class for handling UTF-8 chars within the
719                             class. This does both positive and negative. */                             class. This does both positive and negative. */
720    
721    OP_REF,            /* 62 Match a back reference */    OP_REF,            /* 80 Match a back reference */
722    OP_RECURSE,        /* 63 Match a numbered subpattern (possibly recursive) */    OP_RECURSE,        /* 81 Match a numbered subpattern (possibly recursive) */
723    OP_CALLOUT,        /* 64 Call out to external function if provided */    OP_CALLOUT,        /* 82 Call out to external function if provided */
724    
725    OP_ALT,            /* 65 Start of alternation */    OP_ALT,            /* 83 Start of alternation */
726    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 */
727    OP_KETRMAX,        /* 67 These two must remain together and in this */    OP_KETRMAX,        /* 85 These two must remain together and in this */
728    OP_KETRMIN,        /* 68 order. They are for groups the repeat for ever. */    OP_KETRMIN,        /* 86 order. They are for groups the repeat for ever. */
729    
730    /* The assertions must come before ONCE and COND */    /* The assertions must come before BRA, CBRA, ONCE, and COND.*/
731    
732    OP_ASSERT,         /* 69 Positive lookahead */    OP_ASSERT,         /* 87 Positive lookahead */
733    OP_ASSERT_NOT,     /* 70 Negative lookahead */    OP_ASSERT_NOT,     /* 88 Negative lookahead */
734    OP_ASSERTBACK,     /* 71 Positive lookbehind */    OP_ASSERTBACK,     /* 89 Positive lookbehind */
735    OP_ASSERTBACK_NOT, /* 72 Negative lookbehind */    OP_ASSERTBACK_NOT, /* 90 Negative lookbehind */
736    OP_REVERSE,        /* 73 Move pointer back - used in lookbehind assertions */    OP_REVERSE,        /* 91 Move pointer back - used in lookbehind assertions */
737    
738    /* ONCE and COND must come after the assertions, with ONCE first, as there's    /* ONCE, BRA, CBRA, and COND must come after the assertions, with ONCE first,
739    a test for >= ONCE for a subpattern that isn't an assertion. */    as there's a test for >= ONCE for a subpattern that isn't an assertion. */
740    
741    OP_ONCE,           /* 74 Once matched, don't back up into the subpattern */    OP_ONCE,           /* 92 Atomic group */
742    OP_COND,           /* 75 Conditional group */    OP_BRA,            /* 93 Start of non-capturing bracket */
743    OP_CREF,           /* 76 Used to hold an extraction string number (cond ref) */    OP_CBRA,           /* 94 Start of capturing bracket */
744      OP_COND,           /* 95 Conditional group */
745    OP_BRAZERO,        /* 77 These two must remain together and in this */  
746    OP_BRAMINZERO,     /* 78 order. */    /* These three must follow the previous three, in the same order. There's a
747      check for >= SBRA to distinguish the two sets. */
748    OP_BRANUMBER,      /* 79 Used for extracting brackets whose number is greater  
749                             than can fit into an opcode. */    OP_SBRA,           /* 96 Start of non-capturing bracket, check empty  */
750      OP_SCBRA,          /* 97 Start of capturing bracket, check empty */
751    OP_BRA             /* 80 This and greater values are used for brackets that    OP_SCOND,          /* 98 Conditional group, check empty */
752                             extract substrings up to EXTRACT_BASIC_MAX. After  
753                             that, use is made of OP_BRANUMBER. */    OP_CREF,           /* 99 Used to hold a capture number as condition */
754  };    OP_RREF,           /* 100 Used to hold a recursion number as condition */
755      OP_DEF,            /* 101 The DEFINE condition */
 /* WARNING WARNING WARNING: There is an implicit assumption in pcre.c and  
 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. */  
756    
757  #define EXTRACT_BASIC_MAX  100    OP_BRAZERO,        /* 102 These two must remain together and in this */
758      OP_BRAMINZERO      /* 103 order. */
759    };
760    
761    
762  /* 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
763  for debugging. The macro is referenced only in pcre_printint.c. */  for debugging. The macro is referenced only in pcre_printint.c. */
764    
765  #define OP_NAME_LIST \  #define OP_NAME_LIST \
766    "End", "\\A", "\\G", "\\B", "\\b", "\\D", "\\d",                \    "End", "\\A", "\\G", "\\K", "\\B", "\\b", "\\D", "\\d",         \
767    "\\S", "\\s", "\\W", "\\w", "Any", "Anybyte",                   \    "\\S", "\\s", "\\W", "\\w", "Any", "Anybyte",                   \
768    "notprop", "prop", "extuni",                                    \    "notprop", "prop", "\\R", "\\H", "\\h", "\\V", "\\v",           \
769    "\\Z", "\\z",                                                   \    "extuni",  "\\Z", "\\z",                                        \
770    "Opt", "^", "$", "char", "charnc", "not",                       \    "Opt", "^", "$", "char", "charnc", "not",                       \
771    "*", "*?", "+", "+?", "?", "??", "{", "{", "{",                 \    "*", "*?", "+", "+?", "?", "??", "{", "{", "{",                 \
772      "*+","++", "?+", "{",                                           \
773    "*", "*?", "+", "+?", "?", "??", "{", "{", "{",                 \    "*", "*?", "+", "+?", "?", "??", "{", "{", "{",                 \
774      "*+","++", "?+", "{",                                           \
775    "*", "*?", "+", "+?", "?", "??", "{", "{", "{",                 \    "*", "*?", "+", "+?", "?", "??", "{", "{", "{",                 \
776      "*+","++", "?+", "{",                                           \
777    "*", "*?", "+", "+?", "?", "??", "{", "{",                      \    "*", "*?", "+", "+?", "?", "??", "{", "{",                      \
778    "class", "nclass", "xclass", "Ref", "Recurse", "Callout",       \    "class", "nclass", "xclass", "Ref", "Recurse", "Callout",       \
779    "Alt", "Ket", "KetRmax", "KetRmin", "Assert", "Assert not",     \    "Alt", "Ket", "KetRmax", "KetRmin", "Assert", "Assert not",     \
780    "AssertB", "AssertB not", "Reverse", "Once", "Cond", "Cond ref",\    "AssertB", "AssertB not", "Reverse",                            \
781    "Brazero", "Braminzero", "Branumber", "Bra"    "Once", "Bra", "CBra", "Cond", "SBra", "SCBra", "SCond",        \
782      "Cond ref", "Cond rec", "Cond def", "Brazero", "Braminzero"
783    
784    
785  /* 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 657  in UTF-8 mode. The code that uses this t Line 793  in UTF-8 mode. The code that uses this t
793    
794  #define OP_LENGTHS \  #define OP_LENGTHS \
795    1,                             /* End                                    */ \    1,                             /* End                                    */ \
796    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                     */ \
797      1, 1, 1, 1, 1, 1,              /* \D, \d, \S, \s, \W, \w                 */ \
798    1, 1,                          /* Any, Anybyte                           */ \    1, 1,                          /* Any, Anybyte                           */ \
799    3, 3, 1,                       /* NOTPROP, PROP, EXTUNI                  */ \    3, 3, 1,                       /* NOTPROP, PROP, EXTUNI                  */ \
800      1, 1, 1, 1, 1,                 /* \R, \H, \h, \V, \v                     */ \
801    1, 1, 2, 1, 1,                 /* \Z, \z, Opt, ^, $                      */ \    1, 1, 2, 1, 1,                 /* \Z, \z, Opt, ^, $                      */ \
802    2,                             /* Char  - the minimum length             */ \    2,                             /* Char  - the minimum length             */ \
803    2,                             /* Charnc  - the minimum length           */ \    2,                             /* Charnc  - the minimum length           */ \
# Line 667  in UTF-8 mode. The code that uses this t Line 805  in UTF-8 mode. The code that uses this t
805    /* Positive single-char repeats                            ** These are  */ \    /* Positive single-char repeats                            ** These are  */ \
806    2, 2, 2, 2, 2, 2,              /* *, *?, +, +?, ?, ??      ** minima in  */ \    2, 2, 2, 2, 2, 2,              /* *, *?, +, +?, ?, ??      ** minima in  */ \
807    4, 4, 4,                       /* upto, minupto, exact     ** UTF-8 mode */ \    4, 4, 4,                       /* upto, minupto, exact     ** UTF-8 mode */ \
808      2, 2, 2, 4,                    /* *+, ++, ?+, upto+                      */ \
809    /* Negative single-char repeats - only for chars < 256                   */ \    /* Negative single-char repeats - only for chars < 256                   */ \
810    2, 2, 2, 2, 2, 2,              /* NOT *, *?, +, +?, ?, ??                */ \    2, 2, 2, 2, 2, 2,              /* NOT *, *?, +, +?, ?, ??                */ \
811    4, 4, 4,                       /* NOT upto, minupto, exact               */ \    4, 4, 4,                       /* NOT upto, minupto, exact               */ \
812      2, 2, 2, 4,                    /* Possessive *, +, ?, upto               */ \
813    /* Positive type repeats                                                 */ \    /* Positive type repeats                                                 */ \
814    2, 2, 2, 2, 2, 2,              /* Type *, *?, +, +?, ?, ??               */ \    2, 2, 2, 2, 2, 2,              /* Type *, *?, +, +?, ?, ??               */ \
815    4, 4, 4,                       /* Type upto, minupto, exact              */ \    4, 4, 4,                       /* Type upto, minupto, exact              */ \
816      2, 2, 2, 4,                    /* Possessive *+, ++, ?+, upto+           */ \
817    /* Character class & ref repeats                                         */ \    /* Character class & ref repeats                                         */ \
818    1, 1, 1, 1, 1, 1,              /* *, *?, +, +?, ?, ??                    */ \    1, 1, 1, 1, 1, 1,              /* *, *?, +, +?, ?, ??                    */ \
819    5, 5,                          /* CRRANGE, CRMINRANGE                    */ \    5, 5,                          /* CRRANGE, CRMINRANGE                    */ \
# Line 691  in UTF-8 mode. The code that uses this t Line 832  in UTF-8 mode. The code that uses this t
832    1+LINK_SIZE,                   /* Assert behind                          */ \    1+LINK_SIZE,                   /* Assert behind                          */ \
833    1+LINK_SIZE,                   /* Assert behind not                      */ \    1+LINK_SIZE,                   /* Assert behind not                      */ \
834    1+LINK_SIZE,                   /* Reverse                                */ \    1+LINK_SIZE,                   /* Reverse                                */ \
835    1+LINK_SIZE,                   /* Once                                   */ \    1+LINK_SIZE,                   /* ONCE                                   */ \
836      1+LINK_SIZE,                   /* BRA                                    */ \
837      3+LINK_SIZE,                   /* CBRA                                   */ \
838    1+LINK_SIZE,                   /* COND                                   */ \    1+LINK_SIZE,                   /* COND                                   */ \
839      1+LINK_SIZE,                   /* SBRA                                   */ \
840      3+LINK_SIZE,                   /* SCBRA                                  */ \
841      1+LINK_SIZE,                   /* SCOND                                  */ \
842    3,                             /* CREF                                   */ \    3,                             /* CREF                                   */ \
843      3,                             /* RREF                                   */ \
844      1,                             /* DEF                                    */ \
845    1, 1,                          /* BRAZERO, BRAMINZERO                    */ \    1, 1,                          /* BRAZERO, BRAMINZERO                    */ \
   3,                             /* BRANUMBER                              */ \  
   1+LINK_SIZE                    /* BRA                                    */ \  
846    
847    
848  /* A magic value for OP_CREF to indicate the "in recursion" condition. */  /* A magic value for OP_RREF to indicate the "any recursion" condition. */
849    
850  #define CREF_RECURSE  0xffff  #define RREF_ANY  0xffff
851    
852  /* 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
853  tracked. */  tracked. */
# Line 710  enum { ERR0,  ERR1,  ERR2,  ERR3,  ERR4, Line 856  enum { ERR0,  ERR1,  ERR2,  ERR3,  ERR4,
856         ERR10, ERR11, ERR12, ERR13, ERR14, ERR15, ERR16, ERR17, ERR18, ERR19,         ERR10, ERR11, ERR12, ERR13, ERR14, ERR15, ERR16, ERR17, ERR18, ERR19,
857         ERR20, ERR21, ERR22, ERR23, ERR24, ERR25, ERR26, ERR27, ERR28, ERR29,         ERR20, ERR21, ERR22, ERR23, ERR24, ERR25, ERR26, ERR27, ERR28, ERR29,
858         ERR30, ERR31, ERR32, ERR33, ERR34, ERR35, ERR36, ERR37, ERR38, ERR39,         ERR30, ERR31, ERR32, ERR33, ERR34, ERR35, ERR36, ERR37, ERR38, ERR39,
859         ERR40, ERR41, ERR42, ERR43, ERR44, ERR45, ERR46, ERR47 };         ERR40, ERR41, ERR42, ERR43, ERR44, ERR45, ERR46, ERR47, ERR48, ERR49,
860           ERR50, ERR51, ERR52, ERR53, ERR54, ERR55, ERR56, ERR57, ERR58 };
861    
862  /* 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
863  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 765  typedef struct compile_data { Line 912  typedef struct compile_data {
912    const uschar *fcc;            /* Points to case-flipping table */    const uschar *fcc;            /* Points to case-flipping table */
913    const uschar *cbits;          /* Points to character type table */    const uschar *cbits;          /* Points to character type table */
914    const uschar *ctypes;         /* Points to table of type maps */    const uschar *ctypes;         /* Points to table of type maps */
915      const uschar *start_workspace;/* The start of working space */
916    const uschar *start_code;     /* The start of the compiled code */    const uschar *start_code;     /* The start of the compiled code */
917    const uschar *start_pattern;  /* The start of the pattern */    const uschar *start_pattern;  /* The start of the pattern */
918      const uschar *end_pattern;    /* The end of the pattern */
919      uschar *hwm;                  /* High watermark of workspace */
920    uschar *name_table;           /* The name/number table */    uschar *name_table;           /* The name/number table */
921    int  names_found;             /* Number of entries so far */    int  names_found;             /* Number of entries so far */
922    int  name_entry_size;         /* Size of each entry */    int  name_entry_size;         /* Size of each entry */
923      int  bracount;                /* Count of capturing parens */
924    int  top_backref;             /* Maximum back reference */    int  top_backref;             /* Maximum back reference */
925    unsigned int backref_map;     /* Bitmap of low back refs */    unsigned int backref_map;     /* Bitmap of low back refs */
926      int  external_options;        /* External (initial) options */
927    int  req_varyopt;             /* "After variable item" flag for reqbyte */    int  req_varyopt;             /* "After variable item" flag for reqbyte */
928    BOOL nopartial;               /* Set TRUE if partial won't work */    BOOL nopartial;               /* Set TRUE if partial won't work */
929      int  nltype;                  /* Newline type */
930      int  nllen;                   /* Newline string length */
931      uschar nl[4];                 /* Newline string when fixed length */
932  } compile_data;  } compile_data;
933    
934  /* Structure for maintaining a chain of pointers to the currently incomplete  /* Structure for maintaining a chain of pointers to the currently incomplete
# Line 791  typedef struct recursion_info { Line 946  typedef struct recursion_info {
946    struct recursion_info *prevrec; /* Previous recursion record (or NULL) */    struct recursion_info *prevrec; /* Previous recursion record (or NULL) */
947    int group_num;                /* Number of group that was called */    int group_num;                /* Number of group that was called */
948    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 */
949    USPTR save_start;             /* Old value of md->start_match */    USPTR save_start;             /* Old value of mstart */
950    int *offset_save;             /* Pointer to start of saved offsets */    int *offset_save;             /* Pointer to start of saved offsets */
951    int saved_max;                /* Number of saved offsets */    int saved_max;                /* Number of saved offsets */
952  } recursion_info;  } recursion_info;
953    
954  /* 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
955  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
956  pcre.c, close to the match() function, so that it is easy to keep it in step  has been matched by a subpattern - to break infinite loops. */
957  with any changes of local variable. However, the pointer to the current frame  
958  must be saved in some "static" place over a longjmp(). We declare the  typedef struct eptrblock {
959  structure here so that we can put a pointer in the match_data structure.    struct eptrblock *epb_prev;
960  NOTE: This isn't used for a "normal" compilation of pcre. */    USPTR epb_saved_eptr;
961    } eptrblock;
962    
 struct heapframe;  
963    
964  /* Structure for passing "static" information around between the functions  /* Structure for passing "static" information around between the functions
965  doing traditional NFA matching, so that they are thread-safe. */  doing traditional NFA matching, so that they are thread-safe. */
# Line 816  typedef struct match_data { Line 971  typedef struct match_data {
971    int   *offset_vector;         /* Offset vector */    int   *offset_vector;         /* Offset vector */
972    int    offset_end;            /* One past the end */    int    offset_end;            /* One past the end */
973    int    offset_max;            /* The maximum usable for return data */    int    offset_max;            /* The maximum usable for return data */
974      int    nltype;                /* Newline type */
975      int    nllen;                 /* Newline string length */
976      uschar nl[4];                 /* Newline string when fixed */
977    const uschar *lcc;            /* Points to lower casing table */    const uschar *lcc;            /* Points to lower casing table */
978    const uschar *ctypes;         /* Points to table of type maps */    const uschar *ctypes;         /* Points to table of type maps */
979    BOOL   offset_overflow;       /* Set if too many extractions */    BOOL   offset_overflow;       /* Set if too many extractions */
# Line 829  typedef struct match_data { Line 987  typedef struct match_data {
987    const uschar *start_code;     /* For use when recursing */    const uschar *start_code;     /* For use when recursing */
988    USPTR  start_subject;         /* Start of the subject string */    USPTR  start_subject;         /* Start of the subject string */
989    USPTR  end_subject;           /* End of the subject string */    USPTR  end_subject;           /* End of the subject string */
990    USPTR  start_match;           /* Start of this match attempt */    USPTR  start_match_ptr;       /* Start of matched string */
991    USPTR  end_match_ptr;         /* Subject position at end match */    USPTR  end_match_ptr;         /* Subject position at end match */
992    int    end_offset_top;        /* Highwater mark at end of match */    int    end_offset_top;        /* Highwater mark at end of match */
993    int    capture_last;          /* Most recent capture number */    int    capture_last;          /* Most recent capture number */
994    int    start_offset;          /* The start offset value */    int    start_offset;          /* The start offset value */
995      eptrblock *eptrchain;         /* Chain of eptrblocks for tail recursions */
996      int    eptrn;                 /* Next free eptrblock */
997    recursion_info *recursive;    /* Linked list of recursion data */    recursion_info *recursive;    /* Linked list of recursion data */
998    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 */  
999  } match_data;  } match_data;
1000    
1001  /* 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 849  typedef struct dfa_match_data { Line 1008  typedef struct dfa_match_data {
1008    const uschar *tables;         /* Character tables */    const uschar *tables;         /* Character tables */
1009    int   moptions;               /* Match options */    int   moptions;               /* Match options */
1010    int   poptions;               /* Pattern options */    int   poptions;               /* Pattern options */
1011      int    nltype;                /* Newline type */
1012      int    nllen;                 /* Newline string length */
1013      uschar nl[4];                 /* Newline string when fixed */
1014    void  *callout_data;          /* To pass back to callouts */    void  *callout_data;          /* To pass back to callouts */
1015  } dfa_match_data;  } dfa_match_data;
1016    
# Line 919  extern const uschar _pcre_OP_lengths[]; Line 1081  extern const uschar _pcre_OP_lengths[];
1081  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
1082  sense, but are not part of the PCRE public API. */  sense, but are not part of the PCRE public API. */
1083    
1084  extern int         _pcre_ord2utf8(int, uschar *);  extern BOOL         _pcre_is_newline(const uschar *, int, const uschar *,
1085  extern real_pcre * _pcre_try_flipped(const real_pcre *, real_pcre *,                        int *, BOOL);
1086                       const pcre_study_data *, pcre_study_data *);  extern int          _pcre_ord2utf8(int, uschar *);
1087  extern int         _pcre_ucp_findprop(const int, int *, int *);  extern real_pcre   *_pcre_try_flipped(const real_pcre *, real_pcre *,
1088  extern int         _pcre_ucp_othercase(const int);                        const pcre_study_data *, pcre_study_data *);
1089  extern int         _pcre_valid_utf8(const uschar *, int);  extern int          _pcre_ucp_findprop(const unsigned int, int *, int *);
1090  extern BOOL        _pcre_xclass(int, const uschar *);  extern unsigned int _pcre_ucp_othercase(const unsigned int);
1091    extern int          _pcre_valid_utf8(const uschar *, int);
1092    extern BOOL         _pcre_was_newline(const uschar *, int, const uschar *,
1093                          int *, BOOL);
1094    extern BOOL         _pcre_xclass(int, const uschar *);
1095    
1096  #endif  #endif
1097    

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