/*
* newcvec - allocate a new cvec
*/
static struct cvec *
newcvec(int nchrs, /* to hold this many chrs... */
int nranges) /* ... and this many ranges */
{
size_t nc = (size_t) nchrs + (size_t) nranges * 2;
size_t n = sizeof(struct cvec) + nc * sizeof(chr);
struct cvec *cv = (struct cvec *) MALLOC(n);
if (cv == NULL)
return NULL;
cv->chrspace = nchrs;
cv->chrs = (chr *) (((char *) cv) + sizeof(struct cvec));
cv->ranges = cv->chrs + nchrs;
cv->rangespace = nranges;
return clearcvec(cv);
}
/*
* getcvec - get a cvec, remembering it as v->cv
*/
static struct cvec *
getcvec(struct vars * v, /* context */
int nchrs, /* to hold this many chrs... */
int nranges) /* ... and this many ranges */
{
if (v->cv != NULL && nchrs <= v->cv->chrspace &&
nranges <= v->cv->rangespace)
return clearcvec(v->cv);
if (v->cv != NULL)
freecvec(v->cv);
v->cv = newcvec(nchrs, nranges);
if (v->cv == NULL)
ERR(REG_ESPACE);
return v->cv;
}
/*
- getcvec - get a cvec, remembering it as v->cv
^ static struct cvec *getcvec(struct vars *, int, int);
*/
static struct cvec *
getcvec(
struct vars *v, /* context */
int nchrs, /* to hold this many chrs... */
int nranges) /* ... and this many ranges... */
{
if ((v->cv != NULL) && (nchrs <= v->cv->chrspace) &&
(nranges <= v->cv->rangespace)) {
return clearcvec(v->cv);
}
if (v->cv != NULL) {
freecvec(v->cv);
}
v->cv = newcvec(nchrs, nranges);
if (v->cv == NULL) {
ERR(REG_ESPACE);
}
return v->cv;
}
/*
* newcvec - allocate a new cvec
*/
static struct cvec *
newcvec(int nchrs, /* to hold this many chrs... */
int nranges, /* ... and this many ranges... */
int nmcces) /* ... and this many MCCEs */
{
size_t n;
size_t nc;
struct cvec *cv;
nc = (size_t) nchrs + (size_t) nmcces *(MAXMCCE + 1) + (size_t) nranges *2;
n = sizeof(struct cvec) + (size_t) (nmcces - 1) * sizeof(chr *)
+ nc * sizeof(chr);
cv = (struct cvec *) MALLOC(n);
if (cv == NULL)
return NULL;
cv->chrspace = nchrs;
cv->chrs = (chr *) &cv->mcces[nmcces]; /* chrs just after MCCE ptrs */
cv->mccespace = nmcces;
cv->ranges = cv->chrs + nchrs + nmcces * (MAXMCCE + 1);
cv->rangespace = nranges;
return clearcvec(cv);
}
