/[pcre]/code/trunk/pcre_internal.h
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revision 446 by ph10, Tue Sep 15 10:49:50 2009 UTC revision 518 by ph10, Tue May 18 15:47:01 2010 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) 1997-2009 University of Cambridge             Copyright (c) 1997-2010 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 45  functions whose names all begin with "_p Line 45  functions whose names all begin with "_p
45  #ifndef PCRE_INTERNAL_H  #ifndef PCRE_INTERNAL_H
46  #define PCRE_INTERNAL_H  #define PCRE_INTERNAL_H
47    
48  /* Define DEBUG to get debugging output on stdout. */  /* Define PCRE_DEBUG to get debugging output on stdout. */
49    
50  #if 0  #if 0
51  #define DEBUG  #define PCRE_DEBUG
52  #endif  #endif
53    
54  /* We do not support both EBCDIC and UTF-8 at the same time. The "configure"  /* We do not support both EBCDIC and UTF-8 at the same time. The "configure"
# Line 74  It turns out that the Mac Debugging.h he Line 74  It turns out that the Mac Debugging.h he
74  be absolutely sure we get our version. */  be absolutely sure we get our version. */
75    
76  #undef DPRINTF  #undef DPRINTF
77  #ifdef DEBUG  #ifdef PCRE_DEBUG
78  #define DPRINTF(p) printf p  #define DPRINTF(p) printf p
79  #else  #else
80  #define DPRINTF(p) /* Nothing */  #define DPRINTF(p) /* Nothing */
# Line 86  setjmp and stdarg are used is when NO_RE Line 86  setjmp and stdarg are used is when NO_RE
86    
87  #include <ctype.h>  #include <ctype.h>
88  #include <limits.h>  #include <limits.h>
 #include <setjmp.h>  
 #include <stdarg.h>  
89  #include <stddef.h>  #include <stddef.h>
90  #include <stdio.h>  #include <stdio.h>
91  #include <stdlib.h>  #include <stdlib.h>
# Line 186  preprocessor time in standard C environm Line 184  preprocessor time in standard C environm
184    #error Cannot determine a type for 32-bit unsigned integers    #error Cannot determine a type for 32-bit unsigned integers
185  #endif  #endif
186    
187    /* When checking for integer overflow in pcre_compile(), we need to handle
188    large integers. If a 64-bit integer type is available, we can use that.
189    Otherwise we have to cast to double, which of course requires floating point
190    arithmetic. Handle this by defining a macro for the appropriate type. If
191    stdint.h is available, include it; it may define INT64_MAX. Systems that do not
192    have stdint.h (e.g. Solaris) may have inttypes.h. The macro int64_t may be set
193    by "configure". */
194    
195    #if HAVE_STDINT_H
196    #include <stdint.h>
197    #elif HAVE_INTTYPES_H
198    #include <inttypes.h>
199    #endif
200    
201    #if defined INT64_MAX || defined int64_t
202    #define INT64_OR_DOUBLE int64_t
203    #else
204    #define INT64_OR_DOUBLE double
205    #endif
206    
207  /* All character handling must be done as unsigned characters. Otherwise there  /* All character handling must be done as unsigned characters. Otherwise there
208  are problems with top-bit-set characters and functions such as isspace().  are problems with top-bit-set characters and functions such as isspace().
209  However, we leave the interface to the outside world as char *, because that  However, we leave the interface to the outside world as char *, because that
# Line 549  compatibility. */ Line 567  compatibility. */
567  /* Options for the "extra" block produced by pcre_study(). */  /* Options for the "extra" block produced by pcre_study(). */
568    
569  #define PCRE_STUDY_MAPPED   0x01     /* a map of starting chars exists */  #define PCRE_STUDY_MAPPED   0x01     /* a map of starting chars exists */
570    #define PCRE_STUDY_MINLEN   0x02     /* a minimum length field exists */
571    
572  /* Masks for identifying the public options that are permitted at compile  /* Masks for identifying the public options that are permitted at compile
573  time, run time, or study time, respectively. */  time, run time, or study time, respectively. */
# Line 561  time, run time, or study time, respectiv Line 580  time, run time, or study time, respectiv
580     PCRE_DOTALL|PCRE_DOLLAR_ENDONLY|PCRE_EXTRA|PCRE_UNGREEDY|PCRE_UTF8| \     PCRE_DOTALL|PCRE_DOLLAR_ENDONLY|PCRE_EXTRA|PCRE_UNGREEDY|PCRE_UTF8| \
581     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| \
582     PCRE_DUPNAMES|PCRE_NEWLINE_BITS|PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE| \     PCRE_DUPNAMES|PCRE_NEWLINE_BITS|PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE| \
583     PCRE_JAVASCRIPT_COMPAT)     PCRE_JAVASCRIPT_COMPAT|PCRE_UCP)
584    
585  #define PUBLIC_EXEC_OPTIONS \  #define PUBLIC_EXEC_OPTIONS \
586    (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NOTEMPTY_ATSTART| \    (PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY|PCRE_NOTEMPTY_ATSTART| \
# Line 856  so that PCRE works on both ASCII and EBC Line 875  so that PCRE works on both ASCII and EBC
875  #define STRING_COMMIT0              "COMMIT\0"  #define STRING_COMMIT0              "COMMIT\0"
876  #define STRING_F0                   "F\0"  #define STRING_F0                   "F\0"
877  #define STRING_FAIL0                "FAIL\0"  #define STRING_FAIL0                "FAIL\0"
878    #define STRING_MARK0                "MARK\0"
879  #define STRING_PRUNE0               "PRUNE\0"  #define STRING_PRUNE0               "PRUNE\0"
880  #define STRING_SKIP0                "SKIP\0"  #define STRING_SKIP0                "SKIP\0"
881  #define STRING_THEN                 "THEN"  #define STRING_THEN                 "THEN"
# Line 885  so that PCRE works on both ASCII and EBC Line 905  so that PCRE works on both ASCII and EBC
905  #define STRING_BSR_ANYCRLF_RIGHTPAR "BSR_ANYCRLF)"  #define STRING_BSR_ANYCRLF_RIGHTPAR "BSR_ANYCRLF)"
906  #define STRING_BSR_UNICODE_RIGHTPAR "BSR_UNICODE)"  #define STRING_BSR_UNICODE_RIGHTPAR "BSR_UNICODE)"
907  #define STRING_UTF8_RIGHTPAR        "UTF8)"  #define STRING_UTF8_RIGHTPAR        "UTF8)"
908    #define STRING_UCP_RIGHTPAR         "UCP)"
909    
910  #else  /* SUPPORT_UTF8 */  #else  /* SUPPORT_UTF8 */
911    
# Line 1108  only. */ Line 1129  only. */
1129  #define STRING_COMMIT0              STR_C STR_O STR_M STR_M STR_I STR_T "\0"  #define STRING_COMMIT0              STR_C STR_O STR_M STR_M STR_I STR_T "\0"
1130  #define STRING_F0                   STR_F "\0"  #define STRING_F0                   STR_F "\0"
1131  #define STRING_FAIL0                STR_F STR_A STR_I STR_L "\0"  #define STRING_FAIL0                STR_F STR_A STR_I STR_L "\0"
1132    #define STRING_MARK0                STR_M STR_A STR_R STR_K "\0"
1133  #define STRING_PRUNE0               STR_P STR_R STR_U STR_N STR_E "\0"  #define STRING_PRUNE0               STR_P STR_R STR_U STR_N STR_E "\0"
1134  #define STRING_SKIP0                STR_S STR_K STR_I STR_P "\0"  #define STRING_SKIP0                STR_S STR_K STR_I STR_P "\0"
1135  #define STRING_THEN                 STR_T STR_H STR_E STR_N  #define STRING_THEN                 STR_T STR_H STR_E STR_N
# Line 1137  only. */ Line 1159  only. */
1159  #define STRING_BSR_ANYCRLF_RIGHTPAR STR_B STR_S STR_R STR_UNDERSCORE STR_A STR_N STR_Y STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS  #define STRING_BSR_ANYCRLF_RIGHTPAR STR_B STR_S STR_R STR_UNDERSCORE STR_A STR_N STR_Y STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS
1160  #define STRING_BSR_UNICODE_RIGHTPAR STR_B STR_S STR_R STR_UNDERSCORE STR_U STR_N STR_I STR_C STR_O STR_D STR_E STR_RIGHT_PARENTHESIS  #define STRING_BSR_UNICODE_RIGHTPAR STR_B STR_S STR_R STR_UNDERSCORE STR_U STR_N STR_I STR_C STR_O STR_D STR_E STR_RIGHT_PARENTHESIS
1161  #define STRING_UTF8_RIGHTPAR        STR_U STR_T STR_F STR_8 STR_RIGHT_PARENTHESIS  #define STRING_UTF8_RIGHTPAR        STR_U STR_T STR_F STR_8 STR_RIGHT_PARENTHESIS
1162    #define STRING_UCP_RIGHTPAR         STR_U STR_C STR_P STR_RIGHT_PARENTHESIS
1163    
1164  #endif  /* SUPPORT_UTF8 */  #endif  /* SUPPORT_UTF8 */
1165    
# Line 1169  only. */ Line 1192  only. */
1192    
1193  #define PT_ANY        0    /* Any property - matches all chars */  #define PT_ANY        0    /* Any property - matches all chars */
1194  #define PT_LAMP       1    /* L& - the union of Lu, Ll, Lt */  #define PT_LAMP       1    /* L& - the union of Lu, Ll, Lt */
1195  #define PT_GC         2    /* General characteristic (e.g. L) */  #define PT_GC         2    /* Specified general characteristic (e.g. L) */
1196  #define PT_PC         3    /* Particular characteristic (e.g. Lu) */  #define PT_PC         3    /* Specified particular characteristic (e.g. Lu) */
1197  #define PT_SC         4    /* Script (e.g. Han) */  #define PT_SC         4    /* Script (e.g. Han) */
1198    #define PT_ALNUM      5    /* Alphanumeric - the union of L and N */
1199    #define PT_SPACE      6    /* Perl space - Z plus 9,10,12,13 */
1200    #define PT_PXSPACE    7    /* POSIX space - Z plus 9,10,11,12,13 */
1201    #define PT_WORD       8    /* Word - L plus N plus underscore */
1202    
1203  /* Flag bits and data types for the extended class (OP_XCLASS) for classes that  /* Flag bits and data types for the extended class (OP_XCLASS) for classes that
1204  contain UTF-8 characters with values greater than 255. */  contain UTF-8 characters with values greater than 255. */
# Line 1188  contain UTF-8 characters with values gre Line 1215  contain UTF-8 characters with values gre
1215  /* These are escaped items that aren't just an encoding of a particular data  /* These are escaped items that aren't just an encoding of a particular data
1216  value such as \n. They must have non-zero values, as check_escape() returns  value such as \n. They must have non-zero values, as check_escape() returns
1217  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
1218  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_ALLANY because it
1219  corresponds to "." rather than an escape sequence, and another for OP_ALLANY  corresponds to "." in DOTALL mode rather than an escape sequence. It is also
1220  (which is used for [^] in JavaScript compatibility mode).  used for [^] in JavaScript compatibility mode. In non-DOTALL mode, "." behaves
1221    like \N.
1222    
1223    The special values ESC_DU, ESC_du, etc. are used instead of ESC_D, ESC_d, etc.
1224    when PCRE_UCP is set, when replacement of \d etc by \p sequences is required.
1225    They must be contiguous, and remain in order so that the replacements can be
1226    looked up from a table.
1227    
1228  The final escape must be ESC_REF as subsequent values are used for  The final escape must be ESC_REF as subsequent values are used for
1229  backreferences (\1, \2, \3, etc). There are two tests in the code for an escape  backreferences (\1, \2, \3, etc). There are two tests in the code for an escape
# Line 1200  put in between that don't consume a char Line 1233  put in between that don't consume a char
1233  */  */
1234    
1235  enum { ESC_A = 1, ESC_G, ESC_K, ESC_B, ESC_b, ESC_D, ESC_d, ESC_S, ESC_s,  enum { ESC_A = 1, ESC_G, ESC_K, ESC_B, ESC_b, ESC_D, ESC_d, ESC_S, ESC_s,
1236         ESC_W, ESC_w, ESC_dum1, ESC_dum2, ESC_C, ESC_P, ESC_p, ESC_R, ESC_H,         ESC_W, ESC_w, ESC_N, ESC_dum, ESC_C, ESC_P, ESC_p, ESC_R, ESC_H,
1237         ESC_h, ESC_V, ESC_v, ESC_X, ESC_Z, ESC_z, ESC_E, ESC_Q, ESC_g, ESC_k,         ESC_h, ESC_V, ESC_v, ESC_X, ESC_Z, ESC_z,
1238           ESC_E, ESC_Q, ESC_g, ESC_k,
1239           ESC_DU, ESC_du, ESC_SU, ESC_su, ESC_WU, ESC_wu,
1240         ESC_REF };         ESC_REF };
1241    
   
1242  /* Opcode table: Starting from 1 (i.e. after OP_END), the values up to  /* Opcode table: Starting from 1 (i.e. after OP_END), the values up to
1243  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.
1244    
1245  *** NOTE NOTE NOTE *** Whenever this list is updated, the two macro definitions  *** NOTE NOTE NOTE *** Whenever this list is updated, the two macro definitions
1246  that follow must also be updated to match. There is also a table called  that follow must also be updated to match. There are also tables called
1247  "coptable" in pcre_dfa_exec.c that must be updated. */  "coptable" and "poptable" in pcre_dfa_exec.c that must be updated. */
1248    
1249  enum {  enum {
1250    OP_END,            /* 0 End of pattern */    OP_END,            /* 0 End of pattern */
# Line 1228  enum { Line 1262  enum {
1262    OP_WHITESPACE,         /*  9 \s */    OP_WHITESPACE,         /*  9 \s */
1263    OP_NOT_WORDCHAR,       /* 10 \W */    OP_NOT_WORDCHAR,       /* 10 \W */
1264    OP_WORDCHAR,           /* 11 \w */    OP_WORDCHAR,           /* 11 \w */
1265    OP_ANY,            /* 12 Match any character (subject to DOTALL) */    OP_ANY,            /* 12 Match any character except newline */
1266    OP_ALLANY,         /* 13 Match any character (not subject to DOTALL) */    OP_ALLANY,         /* 13 Match any character */
1267    OP_ANYBYTE,        /* 14 Match any byte (\C); different to OP_ANY for UTF-8 */    OP_ANYBYTE,        /* 14 Match any byte (\C); different to OP_ANY for UTF-8 */
1268    OP_NOTPROP,        /* 15 \P (not Unicode property) */    OP_NOTPROP,        /* 15 \P (not Unicode property) */
1269    OP_PROP,           /* 16 \p (Unicode property) */    OP_PROP,           /* 16 \p (Unicode property) */
# Line 1346  enum { Line 1380  enum {
1380    OP_SCBRA,          /* 98 Start of capturing bracket, check empty */    OP_SCBRA,          /* 98 Start of capturing bracket, check empty */
1381    OP_SCOND,          /* 99 Conditional group, check empty */    OP_SCOND,          /* 99 Conditional group, check empty */
1382    
1383      /* The next two pairs must (respectively) be kept together. */
1384    
1385    OP_CREF,           /* 100 Used to hold a capture number as condition */    OP_CREF,           /* 100 Used to hold a capture number as condition */
1386    OP_RREF,           /* 101 Used to hold a recursion number as condition */    OP_NCREF,          /* 101 Same, but generaged by a name reference*/
1387    OP_DEF,            /* 102 The DEFINE condition */    OP_RREF,           /* 102 Used to hold a recursion number as condition */
1388      OP_NRREF,          /* 103 Same, but generaged by a name reference*/
1389      OP_DEF,            /* 104 The DEFINE condition */
1390    
1391    OP_BRAZERO,        /* 103 These two must remain together and in this */    OP_BRAZERO,        /* 105 These two must remain together and in this */
1392    OP_BRAMINZERO,     /* 104 order. */    OP_BRAMINZERO,     /* 106 order. */
1393    
1394    /* These are backtracking control verbs */    /* These are backtracking control verbs */
1395    
1396    OP_PRUNE,          /* 105 */    OP_MARK,           /* 107 always has an argument */
1397    OP_SKIP,           /* 106 */    OP_PRUNE,          /* 108 */
1398    OP_THEN,           /* 107 */    OP_PRUNE_ARG,      /* 109 same, but with argument */
1399    OP_COMMIT,         /* 108 */    OP_SKIP,           /* 110 */
1400      OP_SKIP_ARG,       /* 111 same, but with argument */
1401      OP_THEN,           /* 112 */
1402      OP_THEN_ARG,       /* 113 same, but with argument */
1403      OP_COMMIT,         /* 114 */
1404    
1405    /* These are forced failure and success verbs */    /* These are forced failure and success verbs */
1406    
1407    OP_FAIL,           /* 109 */    OP_FAIL,           /* 115 */
1408    OP_ACCEPT,         /* 110 */    OP_ACCEPT,         /* 116 */
1409      OP_CLOSE,          /* 117 Used before OP_ACCEPT to close open captures */
1410    
1411    /* This is used to skip a subpattern with a {0} quantifier */    /* This is used to skip a subpattern with a {0} quantifier */
1412    
1413    OP_SKIPZERO        /* 111 */    OP_SKIPZERO,       /* 118 */
1414    
1415      /* This is not an opcode, but is used to check that tables indexed by opcode
1416      are the correct length, in order to catch updating errors - there have been
1417      some in the past. */
1418    
1419      OP_TABLE_LENGTH
1420  };  };
1421    
1422    /* *** NOTE NOTE NOTE *** Whenever the list above is updated, the two macro
1423    definitions that follow must also be updated to match. There are also tables
1424    called "coptable" and "poptable" in pcre_dfa_exec.c that must be updated. */
1425    
1426    
1427  /* 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
1428  for debugging. The macro is referenced only in pcre_printint.c. */  for debugging. The macro is referenced only in pcre_printint.c. */
# Line 1391  for debugging. The macro is referenced o Line 1444  for debugging. The macro is referenced o
1444    "Alt", "Ket", "KetRmax", "KetRmin", "Assert", "Assert not",     \    "Alt", "Ket", "KetRmax", "KetRmin", "Assert", "Assert not",     \
1445    "AssertB", "AssertB not", "Reverse",                            \    "AssertB", "AssertB not", "Reverse",                            \
1446    "Once", "Bra", "CBra", "Cond", "SBra", "SCBra", "SCond",        \    "Once", "Bra", "CBra", "Cond", "SBra", "SCBra", "SCond",        \
1447    "Cond ref", "Cond rec", "Cond def", "Brazero", "Braminzero",    \    "Cond ref", "Cond nref", "Cond rec", "Cond nrec", "Cond def",   \
1448    "*PRUNE", "*SKIP", "*THEN", "*COMMIT", "*FAIL", "*ACCEPT",      \    "Brazero", "Braminzero",                                        \
1449    "Skip zero"    "*MARK", "*PRUNE", "*PRUNE", "*SKIP", "*SKIP",                  \
1450      "*THEN", "*THEN", "*COMMIT", "*FAIL", "*ACCEPT",                \
1451      "Close", "Skip zero"
1452    
1453    
1454  /* 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 1410  in UTF-8 mode. The code that uses this t Line 1465  in UTF-8 mode. The code that uses this t
1465    1, 1, 1, 1, 1,                 /* \A, \G, \K, \B, \b                     */ \    1, 1, 1, 1, 1,                 /* \A, \G, \K, \B, \b                     */ \
1466    1, 1, 1, 1, 1, 1,              /* \D, \d, \S, \s, \W, \w                 */ \    1, 1, 1, 1, 1, 1,              /* \D, \d, \S, \s, \W, \w                 */ \
1467    1, 1, 1,                       /* Any, AllAny, Anybyte                   */ \    1, 1, 1,                       /* Any, AllAny, Anybyte                   */ \
1468    3, 3, 1,                       /* NOTPROP, PROP, EXTUNI                  */ \    3, 3,                          /* \P, \p                                 */ \
1469    1, 1, 1, 1, 1,                 /* \R, \H, \h, \V, \v                     */ \    1, 1, 1, 1, 1,                 /* \R, \H, \h, \V, \v                     */ \
1470      1,                             /* \X                                     */ \
1471    1, 1, 2, 1, 1,                 /* \Z, \z, Opt, ^, $                      */ \    1, 1, 2, 1, 1,                 /* \Z, \z, Opt, ^, $                      */ \
1472    2,                             /* Char  - the minimum length             */ \    2,                             /* Char  - the minimum length             */ \
1473    2,                             /* Charnc  - the minimum length           */ \    2,                             /* Charnc  - the minimum length           */ \
# Line 1453  in UTF-8 mode. The code that uses this t Line 1509  in UTF-8 mode. The code that uses this t
1509    1+LINK_SIZE,                   /* SBRA                                   */ \    1+LINK_SIZE,                   /* SBRA                                   */ \
1510    3+LINK_SIZE,                   /* SCBRA                                  */ \    3+LINK_SIZE,                   /* SCBRA                                  */ \
1511    1+LINK_SIZE,                   /* SCOND                                  */ \    1+LINK_SIZE,                   /* SCOND                                  */ \
1512    3,                             /* CREF                                   */ \    3, 3,                          /* CREF, NCREF                            */ \
1513    3,                             /* RREF                                   */ \    3, 3,                          /* RREF, NRREF                            */ \
1514    1,                             /* DEF                                    */ \    1,                             /* DEF                                    */ \
1515    1, 1,                          /* BRAZERO, BRAMINZERO                    */ \    1, 1,                          /* BRAZERO, BRAMINZERO                    */ \
1516    1, 1, 1, 1,                    /* PRUNE, SKIP, THEN, COMMIT,             */ \    3, 1, 3,                       /* MARK, PRUNE, PRUNE_ARG,                */ \
1517    1, 1, 1                        /* FAIL, ACCEPT, SKIPZERO                 */    1, 3, 1, 3,                    /* SKIP, SKIP_ARG, THEN, THEN_ARG,        */ \
1518      1, 1, 1, 3, 1                  /* COMMIT, FAIL, ACCEPT, CLOSE, SKIPZERO  */
1519    
1520    
1521  /* A magic value for OP_RREF to indicate the "any recursion" condition. */  /* A magic value for OP_RREF and OP_NRREF to indicate the "any recursion"
1522    condition. */
1523    
1524  #define RREF_ANY  0xffff  #define RREF_ANY  0xffff
1525    
1526  /* Error code numbers. They are given names so that they can more easily be  /* Compile time error code numbers. They are given names so that they can more
1527  tracked. */  easily be tracked. When a new number is added, the table called eint in
1528    pcreposix.c must be updated. */
1529    
1530  enum { ERR0,  ERR1,  ERR2,  ERR3,  ERR4,  ERR5,  ERR6,  ERR7,  ERR8,  ERR9,  enum { ERR0,  ERR1,  ERR2,  ERR3,  ERR4,  ERR5,  ERR6,  ERR7,  ERR8,  ERR9,
1531         ERR10, ERR11, ERR12, ERR13, ERR14, ERR15, ERR16, ERR17, ERR18, ERR19,         ERR10, ERR11, ERR12, ERR13, ERR14, ERR15, ERR16, ERR17, ERR18, ERR19,
# Line 1474  enum { ERR0,  ERR1,  ERR2,  ERR3,  ERR4, Line 1533  enum { ERR0,  ERR1,  ERR2,  ERR3,  ERR4,
1533         ERR30, ERR31, ERR32, ERR33, ERR34, ERR35, ERR36, ERR37, ERR38, ERR39,         ERR30, ERR31, ERR32, ERR33, ERR34, ERR35, ERR36, ERR37, ERR38, ERR39,
1534         ERR40, ERR41, ERR42, ERR43, ERR44, ERR45, ERR46, ERR47, ERR48, ERR49,         ERR40, ERR41, ERR42, ERR43, ERR44, ERR45, ERR46, ERR47, ERR48, ERR49,
1535         ERR50, ERR51, ERR52, ERR53, ERR54, ERR55, ERR56, ERR57, ERR58, ERR59,         ERR50, ERR51, ERR52, ERR53, ERR54, ERR55, ERR56, ERR57, ERR58, ERR59,
1536         ERR60, ERR61, ERR62, ERR63, ERR64 };         ERR60, ERR61, ERR62, ERR63, ERR64, ERR65, ERR66, ERR67, ERRCOUNT };
1537    
1538  /* 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
1539  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 1490  Because people can now save and re-use c Line 1549  Because people can now save and re-use c
1549  structure should be made at the end, and something earlier (e.g. a new  structure should be made at the end, and something earlier (e.g. a new
1550  flag in the options or one of the dummy fields) should indicate that the new  flag in the options or one of the dummy fields) should indicate that the new
1551  fields are present. Currently PCRE always sets the dummy fields to zero.  fields are present. Currently PCRE always sets the dummy fields to zero.
1552  NOTE NOTE NOTE:  NOTE NOTE NOTE
1553  */  */
1554    
1555  typedef struct real_pcre {  typedef struct real_pcre {
# Line 1517  remark (see NOTE above) about extending Line 1576  remark (see NOTE above) about extending
1576    
1577  typedef struct pcre_study_data {  typedef struct pcre_study_data {
1578    pcre_uint32 size;               /* Total that was malloced */    pcre_uint32 size;               /* Total that was malloced */
1579    pcre_uint32 options;    pcre_uint32 flags;              /* Private flags */
1580    uschar start_bits[32];    uschar start_bits[32];          /* Starting char bits */
1581      pcre_uint32 minlength;          /* Minimum subject length */
1582  } pcre_study_data;  } pcre_study_data;
1583    
1584    /* Structure for building a chain of open capturing subpatterns during
1585    compiling, so that instructions to close them can be compiled when (*ACCEPT) is
1586    encountered. This is also used to identify subpatterns that contain recursive
1587    back references to themselves, so that they can be made atomic. */
1588    
1589    typedef struct open_capitem {
1590      struct open_capitem *next;    /* Chain link */
1591      pcre_uint16 number;           /* Capture number */
1592      pcre_uint16 flag;             /* Set TRUE if recursive back ref */
1593    } open_capitem;
1594    
1595  /* Structure for passing "static" information around between the functions  /* Structure for passing "static" information around between the functions
1596  doing the compiling, so that they are thread-safe. */  doing the compiling, so that they are thread-safe. */
1597    
# Line 1533  typedef struct compile_data { Line 1604  typedef struct compile_data {
1604    const uschar *start_code;     /* The start of the compiled code */    const uschar *start_code;     /* The start of the compiled code */
1605    const uschar *start_pattern;  /* The start of the pattern */    const uschar *start_pattern;  /* The start of the pattern */
1606    const uschar *end_pattern;    /* The end of the pattern */    const uschar *end_pattern;    /* The end of the pattern */
1607      open_capitem *open_caps;      /* Chain of open capture items */
1608    uschar *hwm;                  /* High watermark of workspace */    uschar *hwm;                  /* High watermark of workspace */
1609    uschar *name_table;           /* The name/number table */    uschar *name_table;           /* The name/number table */
1610    int  names_found;             /* Number of entries so far */    int  names_found;             /* Number of entries so far */
# Line 1545  typedef struct compile_data { Line 1617  typedef struct compile_data {
1617    int  external_flags;          /* External flag bits to be set */    int  external_flags;          /* External flag bits to be set */
1618    int  req_varyopt;             /* "After variable item" flag for reqbyte */    int  req_varyopt;             /* "After variable item" flag for reqbyte */
1619    BOOL had_accept;              /* (*ACCEPT) encountered */    BOOL had_accept;              /* (*ACCEPT) encountered */
1620      BOOL check_lookbehind;        /* Lookbehinds need later checking */
1621    int  nltype;                  /* Newline type */    int  nltype;                  /* Newline type */
1622    int  nllen;                   /* Newline string length */    int  nllen;                   /* Newline string length */
1623    uschar nl[4];                 /* Newline string when fixed length */    uschar nl[4];                 /* Newline string when fixed length */
# Line 1555  branches, for testing for left recursion Line 1628  branches, for testing for left recursion
1628    
1629  typedef struct branch_chain {  typedef struct branch_chain {
1630    struct branch_chain *outer;    struct branch_chain *outer;
1631    uschar *current;    uschar *current_branch;
1632  } branch_chain;  } branch_chain;
1633    
1634  /* Structure for items in a linked list that represents an explicit recursive  /* Structure for items in a linked list that represents an explicit recursive
# Line 1565  typedef struct recursion_info { Line 1638  typedef struct recursion_info {
1638    struct recursion_info *prevrec; /* Previous recursion record (or NULL) */    struct recursion_info *prevrec; /* Previous recursion record (or NULL) */
1639    int group_num;                /* Number of group that was called */    int group_num;                /* Number of group that was called */
1640    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 */
   USPTR save_start;             /* Old value of mstart */  
1641    int *offset_save;             /* Pointer to start of saved offsets */    int *offset_save;             /* Pointer to start of saved offsets */
1642    int saved_max;                /* Number of saved offsets */    int saved_max;                /* Number of saved offsets */
1643    int offset_top;               /* Current value of offset_top */    int save_offset_top;          /* Current value of offset_top */
1644  } recursion_info;  } recursion_info;
1645    
1646  /* Structure for building a chain of data for holding the values of the subject  /* Structure for building a chain of data for holding the values of the subject
# Line 1593  typedef struct match_data { Line 1665  typedef struct match_data {
1665    int    offset_max;            /* The maximum usable for return data */    int    offset_max;            /* The maximum usable for return data */
1666    int    nltype;                /* Newline type */    int    nltype;                /* Newline type */
1667    int    nllen;                 /* Newline string length */    int    nllen;                 /* Newline string length */
1668      int    name_count;            /* Number of names in name table */
1669      int    name_entry_size;       /* Size of entry in names table */
1670      uschar *name_table;           /* Table of names */
1671    uschar nl[4];                 /* Newline string when fixed */    uschar nl[4];                 /* Newline string when fixed */
1672    const uschar *lcc;            /* Points to lower casing table */    const uschar *lcc;            /* Points to lower casing table */
1673    const uschar *ctypes;         /* Points to table of type maps */    const uschar *ctypes;         /* Points to table of type maps */
# Line 1601  typedef struct match_data { Line 1676  typedef struct match_data {
1676    BOOL   noteol;                /* NOTEOL flag */    BOOL   noteol;                /* NOTEOL flag */
1677    BOOL   utf8;                  /* UTF8 flag */    BOOL   utf8;                  /* UTF8 flag */
1678    BOOL   jscript_compat;        /* JAVASCRIPT_COMPAT flag */    BOOL   jscript_compat;        /* JAVASCRIPT_COMPAT flag */
1679      BOOL   use_ucp;               /* PCRE_UCP flag */
1680    BOOL   endonly;               /* Dollar not before final \n */    BOOL   endonly;               /* Dollar not before final \n */
1681    BOOL   notempty;              /* Empty string match not wanted */    BOOL   notempty;              /* Empty string match not wanted */
1682    BOOL   notempty_atstart;      /* Empty string match at start not wanted */    BOOL   notempty_atstart;      /* Empty string match at start not wanted */
# Line 1620  typedef struct match_data { Line 1696  typedef struct match_data {
1696    int    eptrn;                 /* Next free eptrblock */    int    eptrn;                 /* Next free eptrblock */
1697    recursion_info *recursive;    /* Linked list of recursion data */    recursion_info *recursive;    /* Linked list of recursion data */
1698    void  *callout_data;          /* To pass back to callouts */    void  *callout_data;          /* To pass back to callouts */
1699      const uschar *mark;           /* Mark pointer to pass back */
1700  } match_data;  } match_data;
1701    
1702  /* 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 1710  extern const uschar _pcre_OP_lengths[]; Line 1787  extern const uschar _pcre_OP_lengths[];
1787  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
1788  sense, but are not part of the PCRE public API. */  sense, but are not part of the PCRE public API. */
1789    
1790  extern BOOL         _pcre_is_newline(const uschar *, int, const uschar *,  extern const uschar *_pcre_find_bracket(const uschar *, BOOL, int);
1791                        int *, BOOL);  extern BOOL          _pcre_is_newline(USPTR, int, USPTR, int *, BOOL);
1792  extern int          _pcre_ord2utf8(int, uschar *);  extern int           _pcre_ord2utf8(int, uschar *);
1793  extern real_pcre   *_pcre_try_flipped(const real_pcre *, real_pcre *,  extern real_pcre    *_pcre_try_flipped(const real_pcre *, real_pcre *,
1794                        const pcre_study_data *, pcre_study_data *);                         const pcre_study_data *, pcre_study_data *);
1795  extern int          _pcre_valid_utf8(const uschar *, int);  extern int           _pcre_valid_utf8(USPTR, int);
1796  extern BOOL         _pcre_was_newline(const uschar *, int, const uschar *,  extern BOOL          _pcre_was_newline(USPTR, int, USPTR, int *, BOOL);
1797                        int *, BOOL);  extern BOOL          _pcre_xclass(int, const uschar *);
 extern BOOL         _pcre_xclass(int, const uschar *);  
1798    
1799    
1800  /* Unicode character database (UCD) */  /* Unicode character database (UCD) */

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