/* - llvm_regcomp - interface for parser and compilation */ int /* 0 success, otherwise REG_something */ llvm_regcomp(llvm_regex_t *preg, const char *pattern, int cflags) { struct parse pa; struct re_guts *g; struct parse *p = &pa; int i; size_t len; #ifdef REDEBUG # define GOODFLAGS(f) (f) #else # define GOODFLAGS(f) ((f)&~REG_DUMP) #endif cflags = GOODFLAGS(cflags); if ((cflags®_EXTENDED) && (cflags®_NOSPEC)) return(REG_INVARG); if (cflags®_PEND) { if (preg->re_endp < pattern) return(REG_INVARG); len = preg->re_endp - pattern; } else len = strlen((const char *)pattern); /* do the mallocs early so failure handling is easy */ g = (struct re_guts *)malloc(sizeof(struct re_guts) + (NC-1)*sizeof(cat_t)); if (g == NULL) return(REG_ESPACE); p->ssize = len/(size_t)2*(size_t)3 + (size_t)1; /* ugh */ p->strip = (sop *)calloc(p->ssize, sizeof(sop)); p->slen = 0; if (p->strip == NULL) { free((char *)g); return(REG_ESPACE); } /* set things up */ p->g = g; p->next = (char *)pattern; /* convenience; we do not modify it */ p->end = p->next + len; p->error = 0; p->ncsalloc = 0; for (i = 0; i < NPAREN; i++) { p->pbegin[i] = 0; p->pend[i] = 0; } g->csetsize = NC; g->sets = NULL; g->setbits = NULL; g->ncsets = 0; g->cflags = cflags; g->iflags = 0; g->nbol = 0; g->neol = 0; g->must = NULL; g->mlen = 0; g->nsub = 0; g->ncategories = 1; /* category 0 is "everything else" */ g->categories = &g->catspace[-(CHAR_MIN)]; (void) memset((char *)g->catspace, 0, NC*sizeof(cat_t)); g->backrefs = 0; /* do it */ EMIT(OEND, 0); g->firststate = THERE(); if (cflags®_EXTENDED) p_ere(p, OUT); else if (cflags®_NOSPEC) p_str(p); else p_bre(p, OUT, OUT); EMIT(OEND, 0); g->laststate = THERE(); /* tidy up loose ends and fill things in */ categorize(p, g); stripsnug(p, g); findmust(p, g); g->nplus = pluscount(p, g); g->magic = MAGIC2; preg->re_nsub = g->nsub; preg->re_g = g; preg->re_magic = MAGIC1; #ifndef REDEBUG /* not debugging, so can't rely on the assert() in llvm_regexec() */ if (g->iflags®EX_BAD) SETERROR(REG_ASSERT); #endif /* win or lose, we're done */ if (p->error != 0) /* lose */ llvm_regfree(preg); return(p->error); }
//++ //------------------------------------------------------------------------------------ // Details: CRegexParser destructor. // Type: Method. // Args: None. // Return: None. // Throws: None. //-- MIUtilParse::CRegexParser::~CRegexParser() { // Free up memory held within regex. if (m_isValid) llvm_regfree(&m_emma); }