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-rw-r--r--erts/emulator/pcre/pcre_internal.h441
1 files changed, 234 insertions, 207 deletions
diff --git a/erts/emulator/pcre/pcre_internal.h b/erts/emulator/pcre/pcre_internal.h
index af436bd99b..cc4f171438 100644
--- a/erts/emulator/pcre/pcre_internal.h
+++ b/erts/emulator/pcre/pcre_internal.h
@@ -7,7 +7,7 @@
and semantics are as close as possible to those of the Perl 5 language.
Written by Philip Hazel
- Copyright (c) 1997-2013 University of Cambridge
+ Copyright (c) 1997-2016 University of Cambridge
-----------------------------------------------------------------------------
Redistribution and use in source and binary forms, with or without
@@ -281,7 +281,7 @@ pcre.h(.in) and disable (comment out) this message. */
typedef pcre_uint16 pcre_uchar;
#define UCHAR_SHIFT (1)
-#define IN_UCHARS(x) ((x) << UCHAR_SHIFT)
+#define IN_UCHARS(x) ((x) * 2)
#define MAX_255(c) ((c) <= 255u)
#define TABLE_GET(c, table, default) (MAX_255(c)? ((table)[c]):(default))
@@ -289,7 +289,7 @@ typedef pcre_uint16 pcre_uchar;
typedef pcre_uint32 pcre_uchar;
#define UCHAR_SHIFT (2)
-#define IN_UCHARS(x) ((x) << UCHAR_SHIFT)
+#define IN_UCHARS(x) ((x) * 4)
#define MAX_255(c) ((c) <= 255u)
#define TABLE_GET(c, table, default) (MAX_255(c)? ((table)[c]):(default))
@@ -322,8 +322,8 @@ start/end of string field names are. */
&(NLBLOCK->nllen), utf)) \
: \
((p) <= NLBLOCK->PSEND - NLBLOCK->nllen && \
- RAWUCHARTEST(p) == NLBLOCK->nl[0] && \
- (NLBLOCK->nllen == 1 || RAWUCHARTEST(p+1) == NLBLOCK->nl[1]) \
+ UCHAR21TEST(p) == NLBLOCK->nl[0] && \
+ (NLBLOCK->nllen == 1 || UCHAR21TEST(p+1) == NLBLOCK->nl[1]) \
) \
)
@@ -336,8 +336,8 @@ start/end of string field names are. */
&(NLBLOCK->nllen), utf)) \
: \
((p) >= NLBLOCK->PSSTART + NLBLOCK->nllen && \
- RAWUCHARTEST(p - NLBLOCK->nllen) == NLBLOCK->nl[0] && \
- (NLBLOCK->nllen == 1 || RAWUCHARTEST(p - NLBLOCK->nllen + 1) == NLBLOCK->nl[1]) \
+ UCHAR21TEST(p - NLBLOCK->nllen) == NLBLOCK->nl[0] && \
+ (NLBLOCK->nllen == 1 || UCHAR21TEST(p - NLBLOCK->nllen + 1) == NLBLOCK->nl[1]) \
) \
)
@@ -588,12 +588,27 @@ changed in future to be a fixed number of bytes or to depend on LINK_SIZE. */
#define MAX_MARK ((1u << 8) - 1)
#endif
+/* There is a proposed future special "UTF-21" mode, in which only the lowest
+21 bits of a 32-bit character are interpreted as UTF, with the remaining 11
+high-order bits available to the application for other uses. In preparation for
+the future implementation of this mode, there are macros that load a data item
+and, if in this special mode, mask it to 21 bits. These macros all have names
+starting with UCHAR21. In all other modes, including the normal 32-bit
+library, the macros all have the same simple definitions. When the new mode is
+implemented, it is expected that these definitions will be varied appropriately
+using #ifdef when compiling the library that supports the special mode. */
+
+#define UCHAR21(eptr) (*(eptr))
+#define UCHAR21TEST(eptr) (*(eptr))
+#define UCHAR21INC(eptr) (*(eptr)++)
+#define UCHAR21INCTEST(eptr) (*(eptr)++)
+
/* When UTF encoding is being used, a character is no longer just a single
-byte. The macros for character handling generate simple sequences when used in
-character-mode, and more complicated ones for UTF characters. GETCHARLENTEST
-and other macros are not used when UTF is not supported, so they are not
-defined. To make sure they can never even appear when UTF support is omitted,
-we don't even define them. */
+byte in 8-bit mode or a single short in 16-bit mode. The macros for character
+handling generate simple sequences when used in the basic mode, and more
+complicated ones for UTF characters. GETCHARLENTEST and other macros are not
+used when UTF is not supported. To make sure they can never even appear when
+UTF support is omitted, we don't even define them. */
#ifndef SUPPORT_UTF
@@ -606,10 +621,6 @@ we don't even define them. */
#define GETCHARINC(c, eptr) c = *eptr++;
#define GETCHARINCTEST(c, eptr) c = *eptr++;
#define GETCHARLEN(c, eptr, len) c = *eptr;
-#define RAWUCHAR(eptr) (*(eptr))
-#define RAWUCHARINC(eptr) (*(eptr)++)
-#define RAWUCHARTEST(eptr) (*(eptr))
-#define RAWUCHARINCTEST(eptr) (*(eptr)++)
/* #define GETCHARLENTEST(c, eptr, len) */
/* #define BACKCHAR(eptr) */
/* #define FORWARDCHAR(eptr) */
@@ -782,30 +793,6 @@ do not know if we are in UTF-8 mode. */
c = *eptr; \
if (utf && c >= 0xc0) GETUTF8LEN(c, eptr, len);
-/* Returns the next uchar, not advancing the pointer. This is called when
-we know we are in UTF mode. */
-
-#define RAWUCHAR(eptr) \
- (*(eptr))
-
-/* Returns the next uchar, advancing the pointer. This is called when
-we know we are in UTF mode. */
-
-#define RAWUCHARINC(eptr) \
- (*((eptr)++))
-
-/* Returns the next uchar, testing for UTF mode, and not advancing the
-pointer. */
-
-#define RAWUCHARTEST(eptr) \
- (*(eptr))
-
-/* Returns the next uchar, testing for UTF mode, advancing the
-pointer. */
-
-#define RAWUCHARINCTEST(eptr) \
- (*((eptr)++))
-
/* If the pointer is not at the start of a character, move it back until
it is. This is called only in UTF-8 mode - we don't put a test within the macro
because almost all calls are already within a block of UTF-8 only code. */
@@ -901,30 +888,6 @@ we do not know if we are in UTF-16 mode. */
c = *eptr; \
if (utf && (c & 0xfc00) == 0xd800) GETUTF16LEN(c, eptr, len);
-/* Returns the next uchar, not advancing the pointer. This is called when
-we know we are in UTF mode. */
-
-#define RAWUCHAR(eptr) \
- (*(eptr))
-
-/* Returns the next uchar, advancing the pointer. This is called when
-we know we are in UTF mode. */
-
-#define RAWUCHARINC(eptr) \
- (*((eptr)++))
-
-/* Returns the next uchar, testing for UTF mode, and not advancing the
-pointer. */
-
-#define RAWUCHARTEST(eptr) \
- (*(eptr))
-
-/* Returns the next uchar, testing for UTF mode, advancing the
-pointer. */
-
-#define RAWUCHARINCTEST(eptr) \
- (*((eptr)++))
-
/* If the pointer is not at the start of a character, move it back until
it is. This is called only in UTF-16 mode - we don't put a test within the
macro because almost all calls are already within a block of UTF-16 only
@@ -986,30 +949,6 @@ This is called when we do not know if we are in UTF-32 mode. */
#define GETCHARLENTEST(c, eptr, len) \
GETCHARTEST(c, eptr)
-/* Returns the next uchar, not advancing the pointer. This is called when
-we know we are in UTF mode. */
-
-#define RAWUCHAR(eptr) \
- (*(eptr))
-
-/* Returns the next uchar, advancing the pointer. This is called when
-we know we are in UTF mode. */
-
-#define RAWUCHARINC(eptr) \
- (*((eptr)++))
-
-/* Returns the next uchar, testing for UTF mode, and not advancing the
-pointer. */
-
-#define RAWUCHARTEST(eptr) \
- (*(eptr))
-
-/* Returns the next uchar, testing for UTF mode, advancing the
-pointer. */
-
-#define RAWUCHARINCTEST(eptr) \
- (*((eptr)++))
-
/* If the pointer is not at the start of a character, move it back until
it is. This is called only in UTF-32 mode - we don't put a test within the
macro because almost all calls are already within a block of UTF-32 only
@@ -1051,7 +990,7 @@ other. NOTE: The values also appear in pcre_jit_compile.c. */
#ifndef EBCDIC
#define HSPACE_LIST \
- CHAR_HT, CHAR_SPACE, 0xa0, \
+ CHAR_HT, CHAR_SPACE, CHAR_NBSP, \
0x1680, 0x180e, 0x2000, 0x2001, 0x2002, 0x2003, 0x2004, 0x2005, \
0x2006, 0x2007, 0x2008, 0x2009, 0x200A, 0x202f, 0x205f, 0x3000, \
NOTACHAR
@@ -1077,7 +1016,7 @@ other. NOTE: The values also appear in pcre_jit_compile.c. */
#define HSPACE_BYTE_CASES \
case CHAR_HT: \
case CHAR_SPACE: \
- case 0xa0 /* NBSP */
+ case CHAR_NBSP
#define HSPACE_CASES \
HSPACE_BYTE_CASES: \
@@ -1104,11 +1043,12 @@ other. NOTE: The values also appear in pcre_jit_compile.c. */
/* ------ EBCDIC environments ------ */
#else
-#define HSPACE_LIST CHAR_HT, CHAR_SPACE
+#define HSPACE_LIST CHAR_HT, CHAR_SPACE, CHAR_NBSP, NOTACHAR
#define HSPACE_BYTE_CASES \
case CHAR_HT: \
- case CHAR_SPACE
+ case CHAR_SPACE: \
+ case CHAR_NBSP
#define HSPACE_CASES HSPACE_BYTE_CASES
@@ -1155,6 +1095,7 @@ compatibility. */
#define PCRE_HASTHEN 0x00001000 /* pattern contains (*THEN) */
#define PCRE_MLSET 0x00002000 /* match limit set by regex */
#define PCRE_RLSET 0x00004000 /* recursion limit set by regex */
+#define PCRE_MATCH_EMPTY 0x00008000 /* pattern can match empty string */
#if defined COMPILE_PCRE8
#define PCRE_MODE PCRE_MODE8
@@ -1179,7 +1120,8 @@ time, run time, or study time, respectively. */
#define PUBLIC_COMPILE_OPTIONS \
(PCRE_CASELESS|PCRE_EXTENDED|PCRE_ANCHORED|PCRE_MULTILINE| \
PCRE_DOTALL|PCRE_DOLLAR_ENDONLY|PCRE_EXTRA|PCRE_UNGREEDY|PCRE_UTF8| \
- PCRE_NO_AUTO_CAPTURE|PCRE_NO_UTF8_CHECK|PCRE_AUTO_CALLOUT|PCRE_FIRSTLINE| \
+ PCRE_NO_AUTO_CAPTURE|PCRE_NO_AUTO_POSSESS| \
+ PCRE_NO_UTF8_CHECK|PCRE_AUTO_CALLOUT|PCRE_FIRSTLINE| \
PCRE_DUPNAMES|PCRE_NEWLINE_BITS|PCRE_BSR_ANYCRLF|PCRE_BSR_UNICODE| \
PCRE_JAVASCRIPT_COMPAT|PCRE_UCP|PCRE_NO_START_OPTIMIZE|PCRE_NEVER_UTF)
@@ -1280,6 +1222,7 @@ same code point. */
#define CHAR_ESC '\047'
#define CHAR_DEL '\007'
+#define CHAR_NBSP '\x41'
#define STR_ESC "\047"
#define STR_DEL "\007"
@@ -1294,6 +1237,7 @@ a positive value. */
#define CHAR_NEL ((unsigned char)'\x85')
#define CHAR_ESC '\033'
#define CHAR_DEL '\177'
+#define CHAR_NBSP ((unsigned char)'\xa0')
#define STR_LF "\n"
#define STR_NL STR_LF
@@ -1537,22 +1481,25 @@ a positive value. */
#define STRING_xdigit "xdigit"
#define STRING_DEFINE "DEFINE"
-
-#define STRING_CR_RIGHTPAR "CR)"
-#define STRING_LF_RIGHTPAR "LF)"
-#define STRING_CRLF_RIGHTPAR "CRLF)"
-#define STRING_ANY_RIGHTPAR "ANY)"
-#define STRING_ANYCRLF_RIGHTPAR "ANYCRLF)"
-#define STRING_BSR_ANYCRLF_RIGHTPAR "BSR_ANYCRLF)"
-#define STRING_BSR_UNICODE_RIGHTPAR "BSR_UNICODE)"
-#define STRING_UTF8_RIGHTPAR "UTF8)"
-#define STRING_UTF16_RIGHTPAR "UTF16)"
-#define STRING_UTF32_RIGHTPAR "UTF32)"
-#define STRING_UTF_RIGHTPAR "UTF)"
-#define STRING_UCP_RIGHTPAR "UCP)"
-#define STRING_NO_START_OPT_RIGHTPAR "NO_START_OPT)"
-#define STRING_LIMIT_MATCH_EQ "LIMIT_MATCH="
-#define STRING_LIMIT_RECURSION_EQ "LIMIT_RECURSION="
+#define STRING_WEIRD_STARTWORD "[:<:]]"
+#define STRING_WEIRD_ENDWORD "[:>:]]"
+
+#define STRING_CR_RIGHTPAR "CR)"
+#define STRING_LF_RIGHTPAR "LF)"
+#define STRING_CRLF_RIGHTPAR "CRLF)"
+#define STRING_ANY_RIGHTPAR "ANY)"
+#define STRING_ANYCRLF_RIGHTPAR "ANYCRLF)"
+#define STRING_BSR_ANYCRLF_RIGHTPAR "BSR_ANYCRLF)"
+#define STRING_BSR_UNICODE_RIGHTPAR "BSR_UNICODE)"
+#define STRING_UTF8_RIGHTPAR "UTF8)"
+#define STRING_UTF16_RIGHTPAR "UTF16)"
+#define STRING_UTF32_RIGHTPAR "UTF32)"
+#define STRING_UTF_RIGHTPAR "UTF)"
+#define STRING_UCP_RIGHTPAR "UCP)"
+#define STRING_NO_AUTO_POSSESS_RIGHTPAR "NO_AUTO_POSSESS)"
+#define STRING_NO_START_OPT_RIGHTPAR "NO_START_OPT)"
+#define STRING_LIMIT_MATCH_EQ "LIMIT_MATCH="
+#define STRING_LIMIT_RECURSION_EQ "LIMIT_RECURSION="
#else /* SUPPORT_UTF */
@@ -1668,6 +1615,7 @@ only. */
#define CHAR_VERTICAL_LINE '\174'
#define CHAR_RIGHT_CURLY_BRACKET '\175'
#define CHAR_TILDE '\176'
+#define CHAR_NBSP ((unsigned char)'\xa0')
#define STR_HT "\011"
#define STR_VT "\013"
@@ -1800,27 +1748,34 @@ only. */
#define STRING_xdigit STR_x STR_d STR_i STR_g STR_i STR_t
#define STRING_DEFINE STR_D STR_E STR_F STR_I STR_N STR_E
-
-#define STRING_CR_RIGHTPAR STR_C STR_R STR_RIGHT_PARENTHESIS
-#define STRING_LF_RIGHTPAR STR_L STR_F STR_RIGHT_PARENTHESIS
-#define STRING_CRLF_RIGHTPAR STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS
-#define STRING_ANY_RIGHTPAR STR_A STR_N STR_Y STR_RIGHT_PARENTHESIS
-#define STRING_ANYCRLF_RIGHTPAR 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
-#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_UTF8_RIGHTPAR STR_U STR_T STR_F STR_8 STR_RIGHT_PARENTHESIS
-#define STRING_UTF16_RIGHTPAR STR_U STR_T STR_F STR_1 STR_6 STR_RIGHT_PARENTHESIS
-#define STRING_UTF32_RIGHTPAR STR_U STR_T STR_F STR_3 STR_2 STR_RIGHT_PARENTHESIS
-#define STRING_UTF_RIGHTPAR STR_U STR_T STR_F STR_RIGHT_PARENTHESIS
-#define STRING_UCP_RIGHTPAR STR_U STR_C STR_P STR_RIGHT_PARENTHESIS
-#define STRING_NO_START_OPT_RIGHTPAR STR_N STR_O STR_UNDERSCORE STR_S STR_T STR_A STR_R STR_T STR_UNDERSCORE STR_O STR_P STR_T STR_RIGHT_PARENTHESIS
-#define STRING_LIMIT_MATCH_EQ STR_L STR_I STR_M STR_I STR_T STR_UNDERSCORE STR_M STR_A STR_T STR_C STR_H STR_EQUALS_SIGN
-#define STRING_LIMIT_RECURSION_EQ STR_L STR_I STR_M STR_I STR_T STR_UNDERSCORE STR_R STR_E STR_C STR_U STR_R STR_S STR_I STR_O STR_N STR_EQUALS_SIGN
+#define STRING_WEIRD_STARTWORD STR_LEFT_SQUARE_BRACKET STR_COLON STR_LESS_THAN_SIGN STR_COLON STR_RIGHT_SQUARE_BRACKET STR_RIGHT_SQUARE_BRACKET
+#define STRING_WEIRD_ENDWORD STR_LEFT_SQUARE_BRACKET STR_COLON STR_GREATER_THAN_SIGN STR_COLON STR_RIGHT_SQUARE_BRACKET STR_RIGHT_SQUARE_BRACKET
+
+#define STRING_CR_RIGHTPAR STR_C STR_R STR_RIGHT_PARENTHESIS
+#define STRING_LF_RIGHTPAR STR_L STR_F STR_RIGHT_PARENTHESIS
+#define STRING_CRLF_RIGHTPAR STR_C STR_R STR_L STR_F STR_RIGHT_PARENTHESIS
+#define STRING_ANY_RIGHTPAR STR_A STR_N STR_Y STR_RIGHT_PARENTHESIS
+#define STRING_ANYCRLF_RIGHTPAR 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
+#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_UTF8_RIGHTPAR STR_U STR_T STR_F STR_8 STR_RIGHT_PARENTHESIS
+#define STRING_UTF16_RIGHTPAR STR_U STR_T STR_F STR_1 STR_6 STR_RIGHT_PARENTHESIS
+#define STRING_UTF32_RIGHTPAR STR_U STR_T STR_F STR_3 STR_2 STR_RIGHT_PARENTHESIS
+#define STRING_UTF_RIGHTPAR STR_U STR_T STR_F STR_RIGHT_PARENTHESIS
+#define STRING_UCP_RIGHTPAR STR_U STR_C STR_P STR_RIGHT_PARENTHESIS
+#define STRING_NO_AUTO_POSSESS_RIGHTPAR STR_N STR_O STR_UNDERSCORE STR_A STR_U STR_T STR_O STR_UNDERSCORE STR_P STR_O STR_S STR_S STR_E STR_S STR_S STR_RIGHT_PARENTHESIS
+#define STRING_NO_START_OPT_RIGHTPAR STR_N STR_O STR_UNDERSCORE STR_S STR_T STR_A STR_R STR_T STR_UNDERSCORE STR_O STR_P STR_T STR_RIGHT_PARENTHESIS
+#define STRING_LIMIT_MATCH_EQ STR_L STR_I STR_M STR_I STR_T STR_UNDERSCORE STR_M STR_A STR_T STR_C STR_H STR_EQUALS_SIGN
+#define STRING_LIMIT_RECURSION_EQ STR_L STR_I STR_M STR_I STR_T STR_UNDERSCORE STR_R STR_E STR_C STR_U STR_R STR_S STR_I STR_O STR_N STR_EQUALS_SIGN
#endif /* SUPPORT_UTF */
/* Escape items that are just an encoding of a particular data value. */
+#ifndef ESC_a
+#define ESC_a CHAR_BEL
+#endif
+
#ifndef ESC_e
#define ESC_e CHAR_ESC
#endif
@@ -1857,12 +1812,24 @@ only. */
#define PT_WORD 8 /* Word - L plus N plus underscore */
#define PT_CLIST 9 /* Pseudo-property: match character list */
#define PT_UCNC 10 /* Universal Character nameable character */
+#define PT_TABSIZE 11 /* Size of square table for autopossessify tests */
+
+/* The following special properties are used only in XCLASS items, when POSIX
+classes are specified and PCRE_UCP is set - in other words, for Unicode
+handling of these classes. They are not available via the \p or \P escapes like
+those in the above list, and so they do not take part in the autopossessifying
+table. */
+
+#define PT_PXGRAPH 11 /* [:graph:] - characters that mark the paper */
+#define PT_PXPRINT 12 /* [:print:] - [:graph:] plus non-control spaces */
+#define PT_PXPUNCT 13 /* [:punct:] - punctuation characters */
/* Flag bits and data types for the extended class (OP_XCLASS) for classes that
contain characters with values greater than 255. */
-#define XCL_NOT 0x01 /* Flag: this is a negative class */
-#define XCL_MAP 0x02 /* Flag: a 32-byte map is present */
+#define XCL_NOT 0x01 /* Flag: this is a negative class */
+#define XCL_MAP 0x02 /* Flag: a 32-byte map is present */
+#define XCL_HASPROP 0x04 /* Flag: property checks are present. */
#define XCL_END 0 /* Marks end of individual items */
#define XCL_SINGLE 1 /* Single item (one multibyte char) follows */
@@ -1871,9 +1838,9 @@ contain characters with values greater than 255. */
#define XCL_NOTPROP 4 /* Unicode inverted property (ditto) */
/* These are escaped items that aren't just an encoding of a particular data
-value such as \n. They must have non-zero values, as check_escape() returns
-0 for a data character. Also, they must appear in the same order as in the opcode
-definitions below, up to ESC_z. There's a dummy for OP_ALLANY because it
+value such as \n. They must have non-zero values, as check_escape() returns 0
+for a data character. Also, they must appear in the same order as in the
+opcode definitions below, up to ESC_z. There's a dummy for OP_ALLANY because it
corresponds to "." in DOTALL mode rather than an escape sequence. It is also
used for [^] in JavaScript compatibility mode, and for \C in non-utf mode. In
non-DOTALL mode, "." behaves like \N.
@@ -1896,12 +1863,31 @@ enum { ESC_A = 1, ESC_G, ESC_K, ESC_B, ESC_b, ESC_D, ESC_d, ESC_S, ESC_s,
ESC_E, ESC_Q, ESC_g, ESC_k,
ESC_DU, ESC_du, ESC_SU, ESC_su, ESC_WU, ESC_wu };
-/* Opcode table: Starting from 1 (i.e. after OP_END), the values up to
-OP_EOD must correspond in order to the list of escapes immediately above.
-*** NOTE NOTE NOTE *** Whenever this list is updated, the two macro definitions
-that follow must also be updated to match. There are also tables called
-"coptable" and "poptable" in pcre_dfa_exec.c that must be updated. */
+/********************** Opcode definitions ******************/
+
+/****** NOTE NOTE NOTE ******
+
+Starting from 1 (i.e. after OP_END), the values up to OP_EOD must correspond in
+order to the list of escapes immediately above. Furthermore, values up to
+OP_DOLLM must not be changed without adjusting the table called autoposstab in
+pcre_compile.c
+
+Whenever this list is updated, the two macro definitions that follow must be
+updated to match. The possessification table called "opcode_possessify" in
+pcre_compile.c must also be updated, and also the tables called "coptable"
+and "poptable" in pcre_dfa_exec.c.
+
+****** NOTE NOTE NOTE ******/
+
+
+/* The values between FIRST_AUTOTAB_OP and LAST_AUTOTAB_RIGHT_OP, inclusive,
+are used in a table for deciding whether a repeated character type can be
+auto-possessified. */
+
+#define FIRST_AUTOTAB_OP OP_NOT_DIGIT
+#define LAST_AUTOTAB_LEFT_OP OP_EXTUNI
+#define LAST_AUTOTAB_RIGHT_OP OP_DOLLM
enum {
OP_END, /* 0 End of pattern */
@@ -1934,10 +1920,15 @@ enum {
OP_EODN, /* 23 End of data or \n at end of data (\Z) */
OP_EOD, /* 24 End of data (\z) */
- OP_CIRC, /* 25 Start of line - not multiline */
- OP_CIRCM, /* 26 Start of line - multiline */
- OP_DOLL, /* 27 End of line - not multiline */
- OP_DOLLM, /* 28 End of line - multiline */
+ /* Line end assertions */
+
+ OP_DOLL, /* 25 End of line - not multiline */
+ OP_DOLLM, /* 26 End of line - multiline */
+ OP_CIRC, /* 27 Start of line - not multiline */
+ OP_CIRCM, /* 28 Start of line - multiline */
+
+ /* Single characters; caseful must precede the caseless ones */
+
OP_CHAR, /* 29 Match one character, casefully */
OP_CHARI, /* 30 Match one character, caselessly */
OP_NOT, /* 31 Match one character, not the given one, casefully */
@@ -1946,7 +1937,7 @@ enum {
/* The following sets of 13 opcodes must always be kept in step because
the offset from the first one is used to generate the others. */
- /**** Single characters, caseful, must precede the caseless ones ****/
+ /* Repeated characters; caseful must precede the caseless ones */
OP_STAR, /* 33 The maximizing and minimizing versions of */
OP_MINSTAR, /* 34 these six opcodes must come in pairs, with */
@@ -1964,7 +1955,7 @@ enum {
OP_POSQUERY, /* 44 Posesssified query, caseful */
OP_POSUPTO, /* 45 Possessified upto, caseful */
- /**** Single characters, caseless, must follow the caseful ones */
+ /* Repeated characters; caseless must follow the caseful ones */
OP_STARI, /* 46 */
OP_MINSTARI, /* 47 */
@@ -1982,8 +1973,8 @@ enum {
OP_POSQUERYI, /* 57 Posesssified query, caseless */
OP_POSUPTOI, /* 58 Possessified upto, caseless */
- /**** The negated ones must follow the non-negated ones, and match them ****/
- /**** Negated single character, caseful; must precede the caseless ones ****/
+ /* The negated ones must follow the non-negated ones, and match them */
+ /* Negated repeated character, caseful; must precede the caseless ones */
OP_NOTSTAR, /* 59 The maximizing and minimizing versions of */
OP_NOTMINSTAR, /* 60 these six opcodes must come in pairs, with */
@@ -2001,7 +1992,7 @@ enum {
OP_NOTPOSQUERY, /* 70 */
OP_NOTPOSUPTO, /* 71 */
- /**** Negated single character, caseless; must follow the caseful ones ****/
+ /* Negated repeated character, caseless; must follow the caseful ones */
OP_NOTSTARI, /* 72 */
OP_NOTMINSTARI, /* 73 */
@@ -2019,7 +2010,7 @@ enum {
OP_NOTPOSQUERYI, /* 83 */
OP_NOTPOSUPTOI, /* 84 */
- /**** Character types ****/
+ /* Character types */
OP_TYPESTAR, /* 85 The maximizing and minimizing versions of */
OP_TYPEMINSTAR, /* 86 these six opcodes must come in pairs, with */
@@ -2050,89 +2041,96 @@ enum {
OP_CRRANGE, /* 104 These are different to the three sets above. */
OP_CRMINRANGE, /* 105 */
+ OP_CRPOSSTAR, /* 106 Possessified versions */
+ OP_CRPOSPLUS, /* 107 */
+ OP_CRPOSQUERY, /* 108 */
+ OP_CRPOSRANGE, /* 109 */
+
/* End of quantifier opcodes */
- OP_CLASS, /* 106 Match a character class, chars < 256 only */
- OP_NCLASS, /* 107 Same, but the bitmap was created from a negative
+ OP_CLASS, /* 110 Match a character class, chars < 256 only */
+ OP_NCLASS, /* 111 Same, but the bitmap was created from a negative
class - the difference is relevant only when a
character > 255 is encountered. */
- OP_XCLASS, /* 108 Extended class for handling > 255 chars within the
+ OP_XCLASS, /* 112 Extended class for handling > 255 chars within the
class. This does both positive and negative. */
- OP_REF, /* 109 Match a back reference, casefully */
- OP_REFI, /* 110 Match a back reference, caselessly */
- OP_RECURSE, /* 111 Match a numbered subpattern (possibly recursive) */
- OP_CALLOUT, /* 112 Call out to external function if provided */
-
- OP_ALT, /* 113 Start of alternation */
- OP_KET, /* 114 End of group that doesn't have an unbounded repeat */
- OP_KETRMAX, /* 115 These two must remain together and in this */
- OP_KETRMIN, /* 116 order. They are for groups the repeat for ever. */
- OP_KETRPOS, /* 117 Possessive unlimited repeat. */
+ OP_REF, /* 113 Match a back reference, casefully */
+ OP_REFI, /* 114 Match a back reference, caselessly */
+ OP_DNREF, /* 115 Match a duplicate name backref, casefully */
+ OP_DNREFI, /* 116 Match a duplicate name backref, caselessly */
+ OP_RECURSE, /* 117 Match a numbered subpattern (possibly recursive) */
+ OP_CALLOUT, /* 118 Call out to external function if provided */
+
+ OP_ALT, /* 119 Start of alternation */
+ OP_KET, /* 120 End of group that doesn't have an unbounded repeat */
+ OP_KETRMAX, /* 121 These two must remain together and in this */
+ OP_KETRMIN, /* 122 order. They are for groups the repeat for ever. */
+ OP_KETRPOS, /* 123 Possessive unlimited repeat. */
/* The assertions must come before BRA, CBRA, ONCE, and COND, and the four
asserts must remain in order. */
- OP_REVERSE, /* 118 Move pointer back - used in lookbehind assertions */
- OP_ASSERT, /* 119 Positive lookahead */
- OP_ASSERT_NOT, /* 120 Negative lookahead */
- OP_ASSERTBACK, /* 121 Positive lookbehind */
- OP_ASSERTBACK_NOT, /* 122 Negative lookbehind */
+ OP_REVERSE, /* 124 Move pointer back - used in lookbehind assertions */
+ OP_ASSERT, /* 125 Positive lookahead */
+ OP_ASSERT_NOT, /* 126 Negative lookahead */
+ OP_ASSERTBACK, /* 127 Positive lookbehind */
+ OP_ASSERTBACK_NOT, /* 128 Negative lookbehind */
/* ONCE, ONCE_NC, BRA, BRAPOS, CBRA, CBRAPOS, and COND must come immediately
after the assertions, with ONCE first, as there's a test for >= ONCE for a
subpattern that isn't an assertion. The POS versions must immediately follow
the non-POS versions in each case. */
- OP_ONCE, /* 123 Atomic group, contains captures */
- OP_ONCE_NC, /* 124 Atomic group containing no captures */
- OP_BRA, /* 125 Start of non-capturing bracket */
- OP_BRAPOS, /* 126 Ditto, with unlimited, possessive repeat */
- OP_CBRA, /* 127 Start of capturing bracket */
- OP_CBRAPOS, /* 128 Ditto, with unlimited, possessive repeat */
- OP_COND, /* 129 Conditional group */
+ OP_ONCE, /* 129 Atomic group, contains captures */
+ OP_ONCE_NC, /* 130 Atomic group containing no captures */
+ OP_BRA, /* 131 Start of non-capturing bracket */
+ OP_BRAPOS, /* 132 Ditto, with unlimited, possessive repeat */
+ OP_CBRA, /* 133 Start of capturing bracket */
+ OP_CBRAPOS, /* 134 Ditto, with unlimited, possessive repeat */
+ OP_COND, /* 135 Conditional group */
/* These five must follow the previous five, in the same order. There's a
check for >= SBRA to distinguish the two sets. */
- OP_SBRA, /* 130 Start of non-capturing bracket, check empty */
- OP_SBRAPOS, /* 131 Ditto, with unlimited, possessive repeat */
- OP_SCBRA, /* 132 Start of capturing bracket, check empty */
- OP_SCBRAPOS, /* 133 Ditto, with unlimited, possessive repeat */
- OP_SCOND, /* 134 Conditional group, check empty */
+ OP_SBRA, /* 136 Start of non-capturing bracket, check empty */
+ OP_SBRAPOS, /* 137 Ditto, with unlimited, possessive repeat */
+ OP_SCBRA, /* 138 Start of capturing bracket, check empty */
+ OP_SCBRAPOS, /* 139 Ditto, with unlimited, possessive repeat */
+ OP_SCOND, /* 140 Conditional group, check empty */
/* The next two pairs must (respectively) be kept together. */
- OP_CREF, /* 135 Used to hold a capture number as condition */
- OP_NCREF, /* 136 Same, but generated by a name reference*/
- OP_RREF, /* 137 Used to hold a recursion number as condition */
- OP_NRREF, /* 138 Same, but generated by a name reference*/
- OP_DEF, /* 139 The DEFINE condition */
+ OP_CREF, /* 141 Used to hold a capture number as condition */
+ OP_DNCREF, /* 142 Used to point to duplicate names as a condition */
+ OP_RREF, /* 143 Used to hold a recursion number as condition */
+ OP_DNRREF, /* 144 Used to point to duplicate names as a condition */
+ OP_DEF, /* 145 The DEFINE condition */
- OP_BRAZERO, /* 140 These two must remain together and in this */
- OP_BRAMINZERO, /* 141 order. */
- OP_BRAPOSZERO, /* 142 */
+ OP_BRAZERO, /* 146 These two must remain together and in this */
+ OP_BRAMINZERO, /* 147 order. */
+ OP_BRAPOSZERO, /* 148 */
/* These are backtracking control verbs */
- OP_MARK, /* 143 always has an argument */
- OP_PRUNE, /* 144 */
- OP_PRUNE_ARG, /* 145 same, but with argument */
- OP_SKIP, /* 146 */
- OP_SKIP_ARG, /* 147 same, but with argument */
- OP_THEN, /* 148 */
- OP_THEN_ARG, /* 149 same, but with argument */
- OP_COMMIT, /* 150 */
+ OP_MARK, /* 149 always has an argument */
+ OP_PRUNE, /* 150 */
+ OP_PRUNE_ARG, /* 151 same, but with argument */
+ OP_SKIP, /* 152 */
+ OP_SKIP_ARG, /* 153 same, but with argument */
+ OP_THEN, /* 154 */
+ OP_THEN_ARG, /* 155 same, but with argument */
+ OP_COMMIT, /* 156 */
/* These are forced failure and success verbs */
- OP_FAIL, /* 151 */
- OP_ACCEPT, /* 152 */
- OP_ASSERT_ACCEPT, /* 153 Used inside assertions */
- OP_CLOSE, /* 154 Used before OP_ACCEPT to close open captures */
+ OP_FAIL, /* 157 */
+ OP_ACCEPT, /* 158 */
+ OP_ASSERT_ACCEPT, /* 159 Used inside assertions */
+ OP_CLOSE, /* 160 Used before OP_ACCEPT to close open captures */
/* This is used to skip a subpattern with a {0} quantifier */
- OP_SKIPZERO, /* 155 */
+ OP_SKIPZERO, /* 161 */
/* This is not an opcode, but is used to check that tables indexed by opcode
are the correct length, in order to catch updating errors - there have been
@@ -2143,7 +2141,8 @@ enum {
/* *** NOTE NOTE NOTE *** Whenever the list above is updated, the two macro
definitions that follow must also be updated to match. There are also tables
-called "coptable" and "poptable" in pcre_dfa_exec.c that must be updated. */
+called "opcode_possessify" in pcre_compile.c and "coptable" and "poptable" in
+pcre_dfa_exec.c that must be updated. */
/* This macro defines textual names for all the opcodes. These are used only
@@ -2156,7 +2155,7 @@ some cases doesn't actually use these names at all). */
"\\S", "\\s", "\\W", "\\w", "Any", "AllAny", "Anybyte", \
"notprop", "prop", "\\R", "\\H", "\\h", "\\V", "\\v", \
"extuni", "\\Z", "\\z", \
- "^", "^", "$", "$", "char", "chari", "not", "noti", \
+ "$", "$", "^", "^", "char", "chari", "not", "noti", \
"*", "*?", "+", "+?", "?", "??", \
"{", "{", "{", \
"*+","++", "?+", "{", \
@@ -2172,7 +2171,8 @@ some cases doesn't actually use these names at all). */
"*", "*?", "+", "+?", "?", "??", "{", "{", "{", \
"*+","++", "?+", "{", \
"*", "*?", "+", "+?", "?", "??", "{", "{", \
- "class", "nclass", "xclass", "Ref", "Refi", \
+ "*+","++", "?+", "{", \
+ "class", "nclass", "xclass", "Ref", "Refi", "DnRef", "DnRefi", \
"Recurse", "Callout", \
"Alt", "Ket", "KetRmax", "KetRmin", "KetRpos", \
"Reverse", "Assert", "Assert not", "AssertB", "AssertB not", \
@@ -2181,7 +2181,7 @@ some cases doesn't actually use these names at all). */
"Cond", \
"SBra", "SBraPos", "SCBra", "SCBraPos", \
"SCond", \
- "Cond ref", "Cond nref", "Cond rec", "Cond nrec", "Cond def", \
+ "Cond ref", "Cond dnref", "Cond rec", "Cond dnrec", "Cond def", \
"Brazero", "Braminzero", "Braposzero", \
"*MARK", "*PRUNE", "*PRUNE", "*SKIP", "*SKIP", \
"*THEN", "*THEN", "*COMMIT", "*FAIL", \
@@ -2206,7 +2206,7 @@ in UTF-8 mode. The code that uses this table must know about such things. */
3, 3, /* \P, \p */ \
1, 1, 1, 1, 1, /* \R, \H, \h, \V, \v */ \
1, /* \X */ \
- 1, 1, 1, 1, 1, 1, /* \Z, \z, ^, ^M, $, $M */ \
+ 1, 1, 1, 1, 1, 1, /* \Z, \z, $, $M ^, ^M */ \
2, /* Char - the minimum length */ \
2, /* Chari - the minimum length */ \
2, /* not */ \
@@ -2237,11 +2237,14 @@ in UTF-8 mode. The code that uses this table must know about such things. */
/* Character class & ref repeats */ \
1, 1, 1, 1, 1, 1, /* *, *?, +, +?, ?, ?? */ \
1+2*IMM2_SIZE, 1+2*IMM2_SIZE, /* CRRANGE, CRMINRANGE */ \
+ 1, 1, 1, 1+2*IMM2_SIZE, /* Possessive *+, ++, ?+, CRPOSRANGE */ \
1+(32/sizeof(pcre_uchar)), /* CLASS */ \
1+(32/sizeof(pcre_uchar)), /* NCLASS */ \
0, /* XCLASS - variable length */ \
1+IMM2_SIZE, /* REF */ \
1+IMM2_SIZE, /* REFI */ \
+ 1+2*IMM2_SIZE, /* DNREF */ \
+ 1+2*IMM2_SIZE, /* DNREFI */ \
1+LINK_SIZE, /* RECURSE */ \
2+2*LINK_SIZE, /* CALLOUT */ \
1+LINK_SIZE, /* Alt */ \
@@ -2266,8 +2269,8 @@ in UTF-8 mode. The code that uses this table must know about such things. */
1+LINK_SIZE+IMM2_SIZE, /* SCBRA */ \
1+LINK_SIZE+IMM2_SIZE, /* SCBRAPOS */ \
1+LINK_SIZE, /* SCOND */ \
- 1+IMM2_SIZE, 1+IMM2_SIZE, /* CREF, NCREF */ \
- 1+IMM2_SIZE, 1+IMM2_SIZE, /* RREF, NRREF */ \
+ 1+IMM2_SIZE, 1+2*IMM2_SIZE, /* CREF, DNCREF */ \
+ 1+IMM2_SIZE, 1+2*IMM2_SIZE, /* RREF, DNRREF */ \
1, /* DEF */ \
1, 1, 1, /* BRAZERO, BRAMINZERO, BRAPOSZERO */ \
3, 1, 3, /* MARK, PRUNE, PRUNE_ARG */ \
@@ -2276,8 +2279,7 @@ in UTF-8 mode. The code that uses this table must know about such things. */
1, 1, 1, 1, /* COMMIT, FAIL, ACCEPT, ASSERT_ACCEPT */ \
1+IMM2_SIZE, 1 /* CLOSE, SKIPZERO */
-/* A magic value for OP_RREF and OP_NRREF to indicate the "any recursion"
-condition. */
+/* A magic value for OP_RREF to indicate the "any recursion" condition. */
#define RREF_ANY 0xffff
@@ -2292,9 +2294,11 @@ enum { ERR0, ERR1, ERR2, ERR3, ERR4, ERR5, ERR6, ERR7, ERR8, ERR9,
ERR40, ERR41, ERR42, ERR43, ERR44, ERR45, ERR46, ERR47, ERR48, ERR49,
ERR50, ERR51, ERR52, ERR53, ERR54, ERR55, ERR56, ERR57, ERR58, ERR59,
ERR60, ERR61, ERR62, ERR63, ERR64, ERR65, ERR66, ERR67, ERR68, ERR69,
- ERR70, ERR71, ERR72, ERR73, ERR74, ERR75, ERR76, ERR77, ERR78, ERRCOUNT };
+ ERR70, ERR71, ERR72, ERR73, ERR74, ERR75, ERR76, ERR77, ERR78, ERR79,
+ ERR80, ERR81, ERR82, ERR83, ERR84, ERR85, ERR86, ERR87, ERRCOUNT };
/* JIT compiling modes. The function list is indexed by them. */
+
enum { JIT_COMPILE, JIT_PARTIAL_SOFT_COMPILE, JIT_PARTIAL_HARD_COMPILE,
JIT_NUMBER_OF_COMPILE_MODES };
@@ -2412,6 +2416,15 @@ typedef struct open_capitem {
pcre_uint16 flag; /* Set TRUE if recursive back ref */
} open_capitem;
+/* Structure for building a list of named groups during the first pass of
+compiling. */
+
+typedef struct named_group {
+ const pcre_uchar *name; /* Points to the name in the pattern */
+ int length; /* Length of the name */
+ pcre_uint32 number; /* Group number */
+} named_group;
+
/* Structure for passing "static" information around between the functions
doing the compiling, so that they are thread-safe. */
@@ -2424,17 +2437,21 @@ typedef struct compile_data {
const pcre_uchar *start_code; /* The start of the compiled code */
const pcre_uchar *start_pattern; /* The start of the pattern */
const pcre_uchar *end_pattern; /* The end of the pattern */
- open_capitem *open_caps; /* Chain of open capture items */
pcre_uchar *hwm; /* High watermark of workspace */
+ open_capitem *open_caps; /* Chain of open capture items */
+ named_group *named_groups; /* Points to vector in pre-compile */
pcre_uchar *name_table; /* The name/number table */
int names_found; /* Number of entries so far */
int name_entry_size; /* Size of each entry */
+ int named_group_list_size; /* Number of entries in the list */
int workspace_size; /* Size of workspace */
unsigned int bracount; /* Count of capturing parens as we compile */
int final_bracount; /* Saved value after first pass */
int max_lookbehind; /* Maximum lookbehind (characters) */
int top_backref; /* Maximum back reference */
unsigned int backref_map; /* Bitmap of low back refs */
+ unsigned int namedrefcount; /* Number of backreferences by name */
+ int parens_depth; /* Depth of nested parentheses */
int assert_depth; /* Depth of nested assertions */
pcre_uint32 external_options; /* External (initial) options */
pcre_uint32 external_flags; /* External flag bits to be set */
@@ -2442,6 +2459,9 @@ typedef struct compile_data {
BOOL had_accept; /* (*ACCEPT) encountered */
BOOL had_pruneorskip; /* (*PRUNE) or (*SKIP) encountered */
BOOL check_lookbehind; /* Lookbehinds need later checking */
+ BOOL dupnames; /* Duplicate names exist */
+ BOOL dupgroups; /* Duplicate groups exist: (?| found */
+ BOOL iscondassert; /* Next assert is a condition */
int nltype; /* Newline type */
int nllen; /* Newline string length */
pcre_uchar nl[4]; /* Newline string when fixed length */
@@ -2455,6 +2475,13 @@ typedef struct branch_chain {
pcre_uchar *current_branch;
} branch_chain;
+/* Structure for mutual recursion detection. */
+
+typedef struct recurse_check {
+ struct recurse_check *prev;
+ const pcre_uchar *group;
+} recurse_check;
+
/* Structure for items in a linked list that represents an explicit recursive
call within the pattern; used by pcre_exec(). */