/[pcre]/code/trunk/pcre_study.c
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Diff of /code/trunk/pcre_study.c

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revision 689 by ph10, Fri Sep 9 10:34:57 2011 UTC revision 691 by ph10, Sun Sep 11 14:31:21 2011 UTC
# Line 1281  if ((re->options & PCRE_ANCHORED) == 0 & Line 1281  if ((re->options & PCRE_ANCHORED) == 0 &
1281    rc = set_start_bits(code, start_bits, (re->options & PCRE_UTF8) != 0,    rc = set_start_bits(code, start_bits, (re->options & PCRE_UTF8) != 0,
1282      &compile_block);      &compile_block);
1283    bits_set = rc == SSB_DONE;    bits_set = rc == SSB_DONE;
1284    if (rc == SSB_UNKNOWN)    if (rc == SSB_UNKNOWN)
1285      {      {
1286      *errorptr = "internal error: opcode not recognized";      *errorptr = "internal error: opcode not recognized";
1287      return NULL;      return NULL;
1288      }      }
1289    }    }
1290    
1291  /* Find the minimum length of subject string. */  /* Find the minimum length of subject string. */
# Line 1306  nevertheless save it in a field for retu Line 1306  nevertheless save it in a field for retu
1306  so that if it becomes variable in the future, we don't have to change that  so that if it becomes variable in the future, we don't have to change that
1307  code. */  code. */
1308    
1309  if (bits_set || min > 0  if (bits_set || min > 0
1310  #ifdef SUPPORT_JIT  #ifdef SUPPORT_JIT
1311      || (options & PCRE_STUDY_JIT_COMPILE) != 0      || (options & PCRE_STUDY_JIT_COMPILE) != 0
1312  #endif  #endif
# Line 1319  if (bits_set || min > 0 Line 1319  if (bits_set || min > 0
1319      *errorptr = "failed to get memory";      *errorptr = "failed to get memory";
1320      return NULL;      return NULL;
1321      }      }
1322    
1323    study = (pcre_study_data *)((char *)extra + sizeof(pcre_extra));    study = (pcre_study_data *)((char *)extra + sizeof(pcre_extra));
1324    extra->flags = PCRE_EXTRA_STUDY_DATA;    extra->flags = PCRE_EXTRA_STUDY_DATA;
1325    extra->study_data = study;    extra->study_data = study;
1326    
1327    study->size = sizeof(pcre_study_data);    study->size = sizeof(pcre_study_data);
1328    study->flags = 0;    study->flags = 0;
1329    
1330    if (bits_set)    if (bits_set)
1331      {      {
1332      study->flags |= PCRE_STUDY_MAPPED;      study->flags |= PCRE_STUDY_MAPPED;
1333      memcpy(study->start_bits, start_bits, sizeof(start_bits));      memcpy(study->start_bits, start_bits, sizeof(start_bits));
1334      }      }
1335    
1336    /* Always set the minlength value in the block, because the JIT compiler    /* Always set the minlength value in the block, because the JIT compiler
1337    makes use of it. However, don't set the bit unless the length is greater than    makes use of it. However, don't set the bit unless the length is greater than
1338    zero - the interpretive pcre_exec() and pcre_dfa_exec() needn't waste time    zero - the interpretive pcre_exec() and pcre_dfa_exec() needn't waste time
1339    checking this case. */    checking this case. */
1340    
1341    study->minlength = min;    study->minlength = min;
1342    if (min > 0) study->flags |= PCRE_STUDY_MINLEN;    if (min > 0) study->flags |= PCRE_STUDY_MINLEN;
1343    
1344    /* If JIT support was compiled and requested, attempt the JIT compilation.    /* If JIT support was compiled and requested, attempt the JIT compilation.
1345    If no starting bytes were found, and the minimum length is zero, and JIT    If no starting bytes were found, and the minimum length is zero, and JIT
1346    compilation fails, abandon the extra block and return NULL. */    compilation fails, abandon the extra block and return NULL. */
1347    
1348  #ifdef SUPPORT_JIT  #ifdef SUPPORT_JIT
1349    extra->executable_jit = NULL;    extra->executable_jit = NULL;
1350    if ((options & PCRE_STUDY_JIT_COMPILE) != 0) _pcre_jit_compile(re, extra);    if ((options & PCRE_STUDY_JIT_COMPILE) != 0) _pcre_jit_compile(re, extra);
# Line 1352  if (bits_set || min > 0 Line 1352  if (bits_set || min > 0
1352      {      {
1353      pcre_free_study(extra);      pcre_free_study(extra);
1354      extra = NULL;      extra = NULL;
1355      }      }
1356  #endif  #endif
1357    }    }
1358    
# Line 1374  PCRE_EXP_DEFN void Line 1374  PCRE_EXP_DEFN void
1374  pcre_free_study(pcre_extra *extra)  pcre_free_study(pcre_extra *extra)
1375  {  {
1376  #ifdef SUPPORT_JIT  #ifdef SUPPORT_JIT
1377  if ((extra->flags & PCRE_EXTRA_EXECUTABLE_JIT) != 0 &&  if ((extra->flags & PCRE_EXTRA_EXECUTABLE_JIT) != 0 &&
1378       extra->executable_jit != NULL)       extra->executable_jit != NULL)
1379    _pcre_jit_free(extra->executable_jit);    _pcre_jit_free(extra->executable_jit);
1380  #endif  #endif
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