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regguts.h File Reference
#include "regcustom.h"
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Data Structures

struct  colordesc
 
struct  colormaprange
 
struct  colormap
 
struct  cvec
 
struct  arc
 
struct  arcbatch
 
struct  state
 
struct  nfa
 
struct  carc
 
struct  cnfa
 
struct  subre
 
struct  fns
 
struct  guts
 

Macros

#define DISCARD   void /* for throwing values away */
 
#define VS(x)   ((void *)(x)) /* cast something to generic ptr */
 
#define _POSIX2_RE_DUP_MAX   255 /* normally from <limits.h> */
 
#define NOTREACHED   0
 
#define DUPMAX   _POSIX2_RE_DUP_MAX
 
#define DUPINF   (DUPMAX+1)
 
#define REMAGIC   0xfed7 /* magic number for main struct */
 
#define LATYPE_AHEAD_POS   03 /* positive lookahead */
 
#define LATYPE_AHEAD_NEG   02 /* negative lookahead */
 
#define LATYPE_BEHIND_POS   01 /* positive lookbehind */
 
#define LATYPE_BEHIND_NEG   00 /* negative lookbehind */
 
#define LATYPE_IS_POS(la)   ((la) & 01)
 
#define LATYPE_IS_AHEAD(la)   ((la) & 02)
 
#define FDEBUG(arglist)   {}
 
#define MDEBUG(arglist)   {}
 
#define UBITS   (CHAR_BIT * sizeof(unsigned))
 
#define BSET(uv, sn)   ((uv)[(sn)/UBITS] |= (unsigned)1 << ((sn)%UBITS))
 
#define ISBSET(uv, sn)   ((uv)[(sn)/UBITS] & ((unsigned)1 << ((sn)%UBITS)))
 
#define MAX_COLOR   32767 /* max color (must fit in 'color' datatype) */
 
#define COLORLESS   (-1) /* impossible color */
 
#define WHITE   0 /* default color, parent of all others */
 
#define NOSUB   COLORLESS /* value of "sub" when no open subcolor */
 
#define FREECOL   01 /* currently free */
 
#define PSEUDO   02 /* pseudocolor, no real chars */
 
#define UNUSEDCOLOR(cd)   ((cd)->flags & FREECOL)
 
#define NUM_CCLASSES   13 /* must match data in regc_locale.c */
 
#define CMMAGIC   0x876
 
#define CDEND(cm)   (&(cm)->cd[(cm)->max + 1])
 
#define NINLINECDS   ((size_t) 10)
 
#define GETCOLOR(cm, c)   ((c) <= MAX_SIMPLE_CHR ? (cm)->locolormap[(c) - CHR_MIN] : pg_reg_getcolor(cm, c))
 
#define freechain   outchain /* we do not maintain "freechainRev" */
 
#define ABSIZE   10
 
#define FREESTATE   (-1)
 
#define HASLACONS   01 /* uses lookaround constraints */
 
#define CNFA_NOPROGRESS   01 /* flag bit for a no-progress state */
 
#define ZAPCNFA(cnfa)   ((cnfa).nstates = 0)
 
#define NULLCNFA(cnfa)   ((cnfa).nstates == 0)
 
#define REG_MAX_COMPILE_SPACE   (100000 * sizeof(struct state) + 100000 * sizeof(struct arcbatch))
 
#define LONGER   01 /* prefers longer match */
 
#define SHORTER   02 /* prefers shorter match */
 
#define MIXED   04 /* mixed preference below */
 
#define CAP   010 /* capturing parens below */
 
#define BACKR   020 /* back reference below */
 
#define INUSE   0100 /* in use in final tree */
 
#define NOPROP   03 /* bits which may not propagate up */
 
#define LMIX(f)   ((f)<<2) /* LONGER -> MIXED */
 
#define SMIX(f)   ((f)<<1) /* SHORTER -> MIXED */
 
#define UP(f)   (((f)&~NOPROP) | (LMIX(f) & SMIX(f) & MIXED))
 
#define MESSY(f)   ((f)&(MIXED|CAP|BACKR))
 
#define PREF(f)   ((f)&NOPROP)
 
#define PREF2(f1, f2)   ((PREF(f1) != 0) ? PREF(f1) : PREF(f2))
 
#define COMBINE(f1, f2)   (UP((f1)|(f2)) | PREF2(f1, f2))
 
#define CANCEL_REQUESTED(re)   ((*((struct fns *) (re)->re_fns)->cancel_requested) ())
 
#define STACK_TOO_DEEP(re)   ((*((struct fns *) (re)->re_fns)->stack_too_deep) ())
 
#define GUTSMAGIC   0xfed9
 

Typedefs

typedef short color
 
typedef struct colormaprange colormaprange
 

Functions

void pg_set_regex_collation (Oid collation)
 
color pg_reg_getcolor (struct colormap *cm, chr c)
 

Macro Definition Documentation

#define _POSIX2_RE_DUP_MAX   255 /* normally from <limits.h> */

Definition at line 82 of file regguts.h.

#define ABSIZE   10

Definition at line 294 of file regguts.h.

Referenced by allocarc().

#define BACKR   020 /* back reference below */

Definition at line 416 of file regguts.h.

Referenced by cdissect(), and parseqatom().

#define BSET (   uv,
  sn 
)    ((uv)[(sn)/UBITS] |= (unsigned)1 << ((sn)%UBITS))

Definition at line 126 of file regguts.h.

Referenced by initialize(), and miss().

#define CANCEL_REQUESTED (   re)    ((*((struct fns *) (re)->re_fns)->cancel_requested) ())

Definition at line 452 of file regguts.h.

Referenced by cdissect(), copyins(), copyouts(), mergeins(), miss(), moveins(), moveouts(), newarc(), newstate(), and range().

#define CAP   010 /* capturing parens below */

Definition at line 415 of file regguts.h.

Referenced by parseqatom().

#define CDEND (   cm)    (&(cm)->cd[(cm)->max + 1])

Definition at line 215 of file regguts.h.

Referenced by colorcomplement(), okcolors(), and rainbow().

#define CMMAGIC   0x876

Definition at line 209 of file regguts.h.

Referenced by initcm().

#define CNFA_NOPROGRESS   01 /* flag bit for a no-progress state */

Definition at line 365 of file regguts.h.

Referenced by compact(), and miss().

#define COLORLESS   (-1) /* impossible color */

Definition at line 137 of file regguts.h.

Referenced by compact(), dumpnfa(), findprefix(), makesearch(), maxcolor(), miss(), newcolor(), newnfa(), newsub(), onechr(), parseqatom(), pg_regcomp(), pseudocolor(), specialcolors(), subcolor(), subcolorcvec(), subcolorhi(), and traverse_lacons().

#define COMBINE (   f1,
  f2 
)    (UP((f1)|(f2)) | PREF2(f1, f2))

Definition at line 425 of file regguts.h.

Referenced by parseqatom().

#define DISCARD   void /* for throwing values away */

Definition at line 58 of file regguts.h.

Referenced by next(), nfatree(), and pg_regcomp().

#define DUPINF   (DUPMAX+1)

Definition at line 94 of file regguts.h.

Referenced by cbrdissect(), citerdissect(), creviterdissect(), and parseqatom().

#define DUPMAX   _POSIX2_RE_DUP_MAX

Definition at line 93 of file regguts.h.

Referenced by scannum().

#define FDEBUG (   arglist)    {}

Definition at line 116 of file regguts.h.

Referenced by getvacant(), lacon(), longest(), matchuntil(), miss(), pickss(), and shortest().

#define freechain   outchain /* we do not maintain "freechainRev" */

Definition at line 284 of file regguts.h.

#define FREECOL   01 /* currently free */

Definition at line 163 of file regguts.h.

Referenced by freecolor().

#define FREESTATE   (-1)

Definition at line 301 of file regguts.h.

Referenced by delsub(), deltraverse(), destroystate(), and freestate().

#define GETCOLOR (   cm,
  c 
)    ((c) <= MAX_SIMPLE_CHR ? (cm)->locolormap[(c) - CHR_MIN] : pg_reg_getcolor(cm, c))

Definition at line 235 of file regguts.h.

Referenced by findprefix(), longest(), matchuntil(), and shortest().

#define GUTSMAGIC   0xfed9

Definition at line 465 of file regguts.h.

Referenced by pg_regcomp().

#define HASLACONS   01 /* uses lookaround constraints */

Definition at line 359 of file regguts.h.

Referenced by compact(), and miss().

#define INUSE   0100 /* in use in final tree */

Definition at line 417 of file regguts.h.

Referenced by cleanst(), and markst().

#define ISBSET (   uv,
  sn 
)    ((uv)[(sn)/UBITS] & ((unsigned)1 << ((sn)%UBITS)))

Definition at line 127 of file regguts.h.

Referenced by miss().

#define LATYPE_AHEAD_NEG   02 /* negative lookahead */

Definition at line 100 of file regguts.h.

Referenced by next(), and processlacon().

#define LATYPE_AHEAD_POS   03 /* positive lookahead */

Definition at line 99 of file regguts.h.

Referenced by next(), and processlacon().

#define LATYPE_BEHIND_NEG   00 /* negative lookbehind */

Definition at line 102 of file regguts.h.

Referenced by next(), and processlacon().

#define LATYPE_BEHIND_POS   01 /* positive lookbehind */

Definition at line 101 of file regguts.h.

Referenced by next(), and processlacon().

#define LATYPE_IS_AHEAD (   la)    ((la) & 02)

Definition at line 104 of file regguts.h.

Referenced by lacon(), and pg_regcomp().

#define LATYPE_IS_POS (   la)    ((la) & 01)

Definition at line 103 of file regguts.h.

Referenced by lacon().

#define LMIX (   f)    ((f)<<2) /* LONGER -> MIXED */

Definition at line 419 of file regguts.h.

#define LONGER   01 /* prefers longer match */

Definition at line 412 of file regguts.h.

Referenced by parse(), and parseqatom().

#define MAX_COLOR   32767 /* max color (must fit in 'color' datatype) */

Definition at line 136 of file regguts.h.

Referenced by newcolor().

#define MDEBUG (   arglist)    {}

Definition at line 117 of file regguts.h.

Referenced by caltdissect(), cbrdissect(), ccondissect(), cdissect(), cfindloop(), citerdissect(), crevcondissect(), creviterdissect(), find(), and subset().

#define MESSY (   f)    ((f)&(MIXED|CAP|BACKR))

Definition at line 422 of file regguts.h.

Referenced by parse(), and parseqatom().

#define MIXED   04 /* mixed preference below */

Definition at line 414 of file regguts.h.

#define NINLINECDS   ((size_t) 10)

Definition at line 230 of file regguts.h.

Referenced by initcm().

#define NOPROP   03 /* bits which may not propagate up */

Definition at line 418 of file regguts.h.

#define NOSUB   COLORLESS /* value of "sub" when no open subcolor */

Definition at line 159 of file regguts.h.

Referenced by freecolor(), initcm(), newcolor(), newsub(), okcolors(), and pseudocolor().

#define NOTREACHED   0

Definition at line 91 of file regguts.h.

Referenced by brenext(), combine(), copyins(), copyouts(), lexescape(), mergeins(), moveins(), moveouts(), next(), processlacon(), pull(), and push().

#define NULLCNFA (   cnfa)    ((cnfa).nstates == 0)

Definition at line 372 of file regguts.h.

Referenced by freelacons(), freesrnode(), and rfree().

#define NUM_CCLASSES   13 /* must match data in regc_locale.c */

Definition at line 197 of file regguts.h.

#define PREF (   f)    ((f)&NOPROP)

Definition at line 423 of file regguts.h.

Referenced by parseqatom().

#define PREF2 (   f1,
  f2 
)    ((PREF(f1) != 0) ? PREF(f1) : PREF(f2))

Definition at line 424 of file regguts.h.

#define PSEUDO   02 /* pseudocolor, no real chars */

Definition at line 164 of file regguts.h.

Referenced by colorcomplement(), pg_reg_getcharacters(), pg_reg_getnumcharacters(), pseudocolor(), and rainbow().

#define REG_MAX_COMPILE_SPACE   (100000 * sizeof(struct state) + 100000 * sizeof(struct arcbatch))

Definition at line 383 of file regguts.h.

Referenced by allocarc(), and newstate().

#define REMAGIC   0xfed7 /* magic number for main struct */

Definition at line 96 of file regguts.h.

Referenced by pg_reg_colorisbegin(), pg_reg_colorisend(), pg_reg_getcharacters(), pg_reg_getfinalstate(), pg_reg_getinitialstate(), pg_reg_getnumcharacters(), pg_reg_getnumcolors(), pg_reg_getnumoutarcs(), pg_reg_getnumstates(), pg_reg_getoutarcs(), pg_regcomp(), pg_regexec(), pg_regprefix(), and rfree().

#define SHORTER   02 /* prefers shorter match */

Definition at line 413 of file regguts.h.

Referenced by ccondissect(), cdissect(), cfindloop(), citerdissect(), crevcondissect(), creviterdissect(), find(), parseqatom(), and pg_regcomp().

#define SMIX (   f)    ((f)<<1) /* SHORTER -> MIXED */

Definition at line 420 of file regguts.h.

#define STACK_TOO_DEEP (   re)    ((*((struct fns *) (re)->re_fns)->stack_too_deep) ())

Definition at line 455 of file regguts.h.

Referenced by cdissect(), cleartraverse(), clonesuccessorstates(), deltraverse(), duptraverse(), emptyreachable(), findconstraintloop(), lacon(), markcanreach(), markreachable(), and subre().

#define UBITS   (CHAR_BIT * sizeof(unsigned))

Definition at line 125 of file regguts.h.

Referenced by newdfa().

#define UNUSEDCOLOR (   cd)    ((cd)->flags & FREECOL)

Definition at line 165 of file regguts.h.

Referenced by colorcomplement(), freecolor(), newcolor(), okcolors(), and rainbow().

#define UP (   f)    (((f)&~NOPROP) | (LMIX(f) & SMIX(f) & MIXED))

Definition at line 421 of file regguts.h.

Referenced by parse(), and parseqatom().

#define VS (   x)    ((void *)(x)) /* cast something to generic ptr */

Definition at line 61 of file regguts.h.

Referenced by cmp(), moresubs(), newcolor(), pg_regcomp(), and pg_regexec().

#define WHITE   0 /* default color, parent of all others */

Definition at line 138 of file regguts.h.

Referenced by freecolor(), initcm(), and pickss().

#define ZAPCNFA (   cnfa)    ((cnfa).nstates = 0)

Definition at line 371 of file regguts.h.

Referenced by newlacon(), pg_regcomp(), and subre().

Typedef Documentation

typedef short color

Definition at line 134 of file regguts.h.

typedef struct colormaprange colormaprange

Function Documentation

color pg_reg_getcolor ( struct colormap *  cm,
chr  c 
)

Definition at line 120 of file regc_color.c.

References assert, cclass_column_index(), colormap::cmranges, colormap::hiarraycols, colormap::hicolormap, MAX_SIMPLE_CHR, colormap::numcmranges, and colormaprange::rownum.

121 {
122  int rownum,
123  colnum,
124  low,
125  high;
126 
127  /* Should not be used for chrs in the locolormap */
128  assert(c > MAX_SIMPLE_CHR);
129 
130  /*
131  * Find which row it's in. The colormapranges are in order, so we can use
132  * binary search.
133  */
134  rownum = 0; /* if no match, use array row zero */
135  low = 0;
136  high = cm->numcmranges;
137  while (low < high)
138  {
139  int middle = low + (high - low) / 2;
140  const colormaprange *cmr = &cm->cmranges[middle];
141 
142  if (c < cmr->cmin)
143  high = middle;
144  else if (c > cmr->cmax)
145  low = middle + 1;
146  else
147  {
148  rownum = cmr->rownum; /* found a match */
149  break;
150  }
151  }
152 
153  /*
154  * Find which column it's in --- this is all locale-dependent.
155  */
156  if (cm->hiarraycols > 1)
157  {
158  colnum = cclass_column_index(cm, c);
159  return cm->hicolormap[rownum * cm->hiarraycols + colnum];
160  }
161  else
162  {
163  /* fast path if no relevant cclasses */
164  return cm->hicolormap[rownum];
165  }
166 }
c
char * c
Definition: preproc-cursor.c:31
assert
#define assert(TEST)
Definition: imath.c:37
colormap::hicolormap
color * hicolormap
Definition: regguts.h:224
colormap::numcmranges
int numcmranges
Definition: regguts.h:222
colormap::hiarraycols
int hiarraycols
Definition: regguts.h:227
colormap::cmranges
colormaprange * cmranges
Definition: regguts.h:223
cclass_column_index
static int cclass_column_index(struct colormap *cm, chr c)
Definition: regc_locale.c:672
MAX_SIMPLE_CHR
#define MAX_SIMPLE_CHR
Definition: regcustom.h:97
void pg_set_regex_collation ( Oid  collation)

Definition at line 232 of file regc_pg_locale.c.

References C_COLLATION_OID, COLLPROVIDER_ICU, DEFAULT_COLLATION_OID, ereport, errcode(), errhint(), errmsg(), ERROR, GetDatabaseEncoding(), lc_ctype_is_c(), OidIsValid, pg_newlocale_from_collation(), pg_regex_collation, PG_REGEX_LOCALE_1BYTE, PG_REGEX_LOCALE_1BYTE_L, PG_REGEX_LOCALE_C, PG_REGEX_LOCALE_ICU, PG_REGEX_LOCALE_WIDE, PG_REGEX_LOCALE_WIDE_L, pg_regex_strategy, PG_UTF8, and pg_locale_struct::provider.

Referenced by pg_regcomp(), pg_regexec(), and pg_regprefix().

233 {
234  if (lc_ctype_is_c(collation))
235  {
236  /* C/POSIX collations use this path regardless of database encoding */
237  pg_regex_strategy = PG_REGEX_LOCALE_C;
238  pg_regex_locale = 0;
239  pg_regex_collation = C_COLLATION_OID;
240  }
241  else
242  {
243  if (collation == DEFAULT_COLLATION_OID)
244  pg_regex_locale = 0;
245  else if (OidIsValid(collation))
246  {
247  /*
248  * NB: pg_newlocale_from_collation will fail if not HAVE_LOCALE_T;
249  * the case of pg_regex_locale != 0 but not HAVE_LOCALE_T does not
250  * have to be considered below.
251  */
252  pg_regex_locale = pg_newlocale_from_collation(collation);
253  }
254  else
255  {
256  /*
257  * This typically means that the parser could not resolve a
258  * conflict of implicit collations, so report it that way.
259  */
260  ereport(ERROR,
261  (errcode(ERRCODE_INDETERMINATE_COLLATION),
262  errmsg("could not determine which collation to use for regular expression"),
263  errhint("Use the COLLATE clause to set the collation explicitly.")));
264  }
265 
266 #ifdef USE_ICU
267  if (pg_regex_locale && pg_regex_locale->provider == COLLPROVIDER_ICU)
268  pg_regex_strategy = PG_REGEX_LOCALE_ICU;
269  else
270 #endif
271  if (GetDatabaseEncoding() == PG_UTF8)
272  {
273  if (pg_regex_locale)
274  pg_regex_strategy = PG_REGEX_LOCALE_WIDE_L;
275  else
276  pg_regex_strategy = PG_REGEX_LOCALE_WIDE;
277  }
278  else
279  {
280  if (pg_regex_locale)
281  pg_regex_strategy = PG_REGEX_LOCALE_1BYTE_L;
282  else
283  pg_regex_strategy = PG_REGEX_LOCALE_1BYTE;
284  }
285 
286  pg_regex_collation = collation;
287  }
288 }
COLLPROVIDER_ICU
#define COLLPROVIDER_ICU
Definition: pg_collation.h:85
errhint
int errhint(const char *fmt,...)
Definition: elog.c:987
PG_REGEX_LOCALE_1BYTE_L
Definition: regc_pg_locale.c:71
pg_regex_locale
static pg_locale_t pg_regex_locale
Definition: regc_pg_locale.c:76
pg_regex_collation
static Oid pg_regex_collation
Definition: regc_pg_locale.c:77
pg_regex_strategy
static PG_Locale_Strategy pg_regex_strategy
Definition: regc_pg_locale.c:75
PG_REGEX_LOCALE_WIDE
Definition: regc_pg_locale.c:68
errcode
int errcode(int sqlerrcode)
Definition: elog.c:575
OidIsValid
#define OidIsValid(objectId)
Definition: c.h:532
ERROR
#define ERROR
Definition: elog.h:43
DEFAULT_COLLATION_OID
#define DEFAULT_COLLATION_OID
Definition: pg_collation.h:75
PG_REGEX_LOCALE_1BYTE
Definition: regc_pg_locale.c:69
ereport
#define ereport(elevel, rest)
Definition: elog.h:122
pg_newlocale_from_collation
pg_locale_t pg_newlocale_from_collation(Oid collid)
Definition: pg_locale.c:1275
pg_locale_struct::provider
char provider
Definition: pg_locale.h:84
GetDatabaseEncoding
int GetDatabaseEncoding(void)
Definition: mbutils.c:1004
PG_UTF8
Definition: pg_wchar.h:246
C_COLLATION_OID
#define C_COLLATION_OID
Definition: pg_collation.h:78
PG_REGEX_LOCALE_C
Definition: regc_pg_locale.c:67
PG_REGEX_LOCALE_ICU
Definition: regc_pg_locale.c:72
errmsg
int errmsg(const char *fmt,...)
Definition: elog.c:797
lc_ctype_is_c
bool lc_ctype_is_c(Oid collation)
Definition: pg_locale.c:1178
PG_REGEX_LOCALE_WIDE_L
Definition: regc_pg_locale.c:70