/* Used only for structure field arrays*/
static void
generate_fieldarray(Symbol* basetype, NCConstant* con, Dimset* dimset,
Bytebuffer* codebuf, Datalist* filler, Generator* generator)
{
int i;
int chartype = (basetype->typ.typecode == NC_CHAR);
Datalist* data;
ASSERT(dimset->ndims > 0);
if(con != NULL && !isfillconst(con))
data = con->value.compoundv;
else
data = NULL;
if(chartype) {
/* Collect the char field in a separate buffer */
Bytebuffer* charbuf = bbNew();
gen_chararray(dimset,data,charbuf,filler);
generator->charconstant(generator,codebuf,charbuf);
bbFree(charbuf);
} else {
int uid;
size_t xproduct = crossproduct(dimset,0,0); /* compute total number of elements */
generator->listbegin(generator,LISTFIELDARRAY,xproduct,codebuf,&uid);
for(i=0;i<xproduct;i++) {
con = (data == NULL ? NULL : datalistith(data,i));
generator->list(generator,LISTFIELDARRAY,uid,i,codebuf);
generate_basetype(basetype,con,codebuf,NULL,generator);
}
generator->listend(generator,LISTFIELDARRAY,uid,i,codebuf);
}
}
void
genbin_arraydata(Symbol* vsym, Bytebuffer* memory)
{
Datasrc* src;
Datalist* list;
int i;
int chartype = (vsym->typ.basetype->typ.typecode == NC_CHAR);
nciter_t iter;
Iterodom iterodom;
if(vsym->data == NULL) return;
if(chartype) {
gen_chararray(vsym,memory);
return;
}
list = vsym->data;
ASSERT(list->dimdata != NULL);
src = datalist2src(list);
/* Create an iterator to generate blocks of data */
nc_get_iter(vsym,databuffersize,&iter);
nc_next_iter(&iter,iterodom.start,iterodom.count);
iterodom.rank = vsym->typ.dimset.ndims;
genbin_arraydatar(vsym,memory,src,iter,&iterodom,/*index=*/0)
}
static void
generate_array(Symbol* vsym,
Bytebuffer* code,
Datalist* filler,
Generator* generator,
Writer writer
)
{
Dimset* dimset = &vsym->typ.dimset;
int rank = dimset->ndims;
Symbol* basetype = vsym->typ.basetype;
nc_type typecode = basetype->typ.typecode;
Odometer* odom;
nciter_t iter;
ASSERT(rank > 0);
/* Start by doing easy cases */
#ifdef CHARBUG
if(typecode == NC_CHAR) { /* case: character typed variable, rank > 0 */
Bytebuffer* charbuf = bbNew();
gen_chararray(dimset,vsym->data,charbuf,filler);
generator->charconstant(generator,code,charbuf);
bbFree(charbuf);
odom = newodometer(dimset,NULL,NULL);
writer(generator,vsym,code,odom->rank,odom->start,odom->count);
} else
#else /*!CHARBUG*/
/* Case: char var && dim 1..n are not unlimited */
if(findunlimited(dimset,1) == rank && typecode == NC_CHAR) {
Bytebuffer* charbuf = bbNew();
gen_leafchararray(dimset,0,vsym->data,charbuf,filler);
generator->charconstant(generator,code,charbuf);
bbFree(charbuf);
odom = newodometer(dimset,NULL,NULL);
writer(generator,vsym,code,odom->rank,odom->start,odom->count);
} else
#endif
/* Case 2: dim 1..n are not unlimited */
if(findunlimited(dimset,1) == rank) {
size_t offset = 0; /* where are we in the data list */
size_t nelems = 0; /* # of data list items to read */
/* Create an iterator and odometer and just walk the datalist */
nc_get_iter(vsym,nciterbuffersize,&iter);
odom = newodometer(dimset,NULL,NULL);
for(;;offset+=nelems) {
int i,uid;
nelems=nc_next_iter(&iter,odom->start,odom->count);
if(nelems == 0) break;
bbClear(code);
generator->listbegin(generator,LISTDATA,vsym->data->length,code,&uid);
for(i=0;i<nelems;i++) {
#ifdef ITERBUG
Constant* con = datalistith(vsym->data,i);
#else
NCConstant* con = datalistith(vsym->data,i+offset);
#endif
generator->list(generator,LISTDATA,uid,i,code);
#ifdef USE_NOFILL
if(nofill_flag && con == NULL)
break;
else
#endif
generate_basetype(basetype,con,code,filler,generator);
}
generator->listend(generator,LISTDATA,uid,i,code);
#ifdef USE_NOFILL
writer(generator,vsym,code,rank,odom->start,odom->index);
#else
writer(generator,vsym,code,rank,odom->start,odom->count);
#endif
}
} else
{ /* Hard case: multiple unlimited dimensions */
/* Setup iterator and odometer */
#ifdef CHARBUG
nc_get_iter(vsym,nciterbuffersize,&iter);
#else
nc_get_iter(vsym,NC_MAX_UINT,&iter); /* effectively infinite */
#endif
odom = newodometer(dimset,NULL,NULL);
for(;;) {/* iterate in nelem chunks */
/* get nelems count and modify odometer */
size_t nelems=nc_next_iter(&iter,odom->start,odom->count);
if(nelems == 0) break;
generate_arrayr(vsym,code,vsym->data,
odom,
/*dim index=*/0,
filler,generator
);
#ifdef USE_NOFILL
writer(generator,vsym,code,odom->rank,odom->start,odom->index);
#else
writer(generator,vsym,code,odom->rank,odom->start,odom->count);
#endif
}
}
odometerfree(odom);
}
/**
The basic idea is to split the set of dimensions into groups
and iterate over each group. A group is defined as the
range of indices starting at an unlimited dimension upto
(but not including) the next unlimited. The first group
starts at index 0, even if dimension 0 is not unlimited.
The last group is everything from the last unlimited
dimension thru the last dimension (index rank-1).
*/
static void
generate_arrayr(Symbol* vsym,
Bytebuffer* code,
Datalist* list,
Odometer* odom,
int dimindex,
Datalist* filler,
Generator* generator
)
{
int uid,i;
Symbol* basetype = vsym->typ.basetype;
Dimset* dimset = &vsym->typ.dimset;
int rank = dimset->ndims;
int lastunlimited = findlastunlimited(dimset);
int nextunlimited = findunlimited(dimset,dimindex+1);
int typecode = basetype->typ.typecode;
int islastgroup = (lastunlimited == rank || dimindex >= lastunlimited || dimindex == rank-1);
Odometer* subodom = NULL;
ASSERT(rank > 0);
ASSERT((dimindex >= 0 && dimindex < rank));
if(islastgroup) {
/* Handle NC_CHAR case separately */
if(typecode == NC_CHAR) {
Bytebuffer* charbuf = bbNew();
gen_chararray(dimset,dimindex,list,charbuf,filler);
generator->charconstant(generator,code,charbuf);
bbFree(charbuf);
} else {
/* build a special odometer to walk the last few dimensions */
subodom = newsubodometer(odom,dimset,dimindex,rank);
generator->listbegin(generator,LISTDATA,list->length,code,&uid);
for(i=0;odometermore(subodom);i++) {
size_t offset = odometeroffset(subodom);
NCConstant* con = datalistith(list,offset);
generator->list(generator,LISTDATA,uid,i,code);
generate_basetype(basetype,con,code,filler,generator);
odometerincr(subodom);
}
generator->listend(generator,LISTDATA,uid,i,code);
odometerfree(subodom); subodom = NULL;
}
} else {/* !islastgroup */
/* Our datalist must be a list of compounds representing
the next unlimited; so walk the subarray from this index
upto next unlimited.
*/
ASSERT((dimindex < nextunlimited));
ASSERT((isunlimited(dimset,nextunlimited)));
/* build a sub odometer */
subodom = newsubodometer(odom,dimset,dimindex,nextunlimited);
for(i=0;odometermore(subodom);i++) {
size_t offset = odometeroffset(subodom);
NCConstant* con = datalistith(list,offset);
if(con == NULL || con->nctype == NC_FILL) {
if(filler == NULL)
filler = getfiller(vsym);
generate_arrayr(vsym,code,filler,odom,nextunlimited,NULL,generator);
} else if(islistconst(con)) {
Datalist* sublist = compoundfor(con);
generate_arrayr(vsym,code,sublist,odom,nextunlimited,filler,generator);
} else {
semerror(constline(con),"Expected {...} representing unlimited list");
return;
}
odometerincr(subodom);
}
odometerfree(subodom); subodom = NULL;
}
if(subodom != NULL)
odometerfree(subodom);
return;
}
static void
generate_array(Symbol* vsym,
Bytebuffer* code,
Datalist* filler,
Generator* generator,
Writer writer
)
{
Dimset* dimset = &vsym->typ.dimset;
int rank = dimset->ndims;
Symbol* basetype = vsym->typ.basetype;
nc_type typecode = basetype->typ.typecode;
Odometer* odom = NULL;
nciter_t iter;
int firstunlim = findunlimited(dimset,1);
int nunlim = countunlimited(dimset);
int isnc3unlim = (nunlim <= 1 && (firstunlim == 0 || firstunlim == rank)); /* netcdf-3 case of at most 1 unlim in 0th dimension */
ASSERT(rank > 0);
if(isnc3unlim) {
/* Handle NC_CHAR case separately */
if(typecode == NC_CHAR) {
Bytebuffer* charbuf = bbNew();
gen_chararray(dimset,0,vsym->data,charbuf,filler);
generator->charconstant(generator,code,charbuf);
/* Create an odometer to get the dimension info */
odom = newodometer(dimset,NULL,NULL);
writer(generator,vsym,code,odom->rank,odom->start,odom->count);
// writer(generator,vsym,code,odom->rank,0,bbLength(charbuf));
bbFree(charbuf);
} else { /* typecode != NC_CHAR */
/* Case: dim 1..rank-1 are not unlimited, dim 0 might be */
size_t offset = 0; /* where are we in the data list */
size_t nelems = 0; /* # of data list items to generate */
/* Create an iterator and odometer and just walk the datalist */
nc_get_iter(vsym,nciterbuffersize,&iter);
odom = newodometer(dimset,NULL,NULL);
for(;;offset+=nelems) {
int i,uid;
nelems=nc_next_iter(&iter,odometerstartvector(odom),odometercountvector(odom));
if(nelems == 0)
break;
bbClear(code);
generator->listbegin(generator,LISTDATA,vsym->data->length,code,&uid);
for(i=0;i<nelems;i++) {
NCConstant* con = datalistith(vsym->data,i+offset);
generator->list(generator,LISTDATA,uid,i,code);
generate_basetype(basetype,con,code,filler,generator);
}
generator->listend(generator,LISTDATA,uid,i,code);
writer(generator,vsym,code,rank,odom->start,odom->count);
}
}
} else { /* Hard case: multiple unlimited dimensions or unlim in dim > 0*/
/* Setup iterator and odometer */
nc_get_iter(vsym,NC_MAX_UINT,&iter); /* effectively infinite */
odom = newodometer(dimset,NULL,NULL);
for(;;) {/* iterate in nelem chunks */
/* get nelems count and modify odometer */
size_t nelems=nc_next_iter(&iter,odom->start,odom->count);
if(nelems == 0) break;
generate_arrayr(vsym,code,vsym->data,
odom,
/*dim index=*/0,
filler,generator
);
writer(generator,vsym,code,odom->rank,odom->start,odom->count);
}
}
if(odom != NULL)
odometerfree(odom);
}
void
gen_chararray(Symbol* vsym,
Bytebuffer* databuf,
Datasrc* src,
Odometer* odom,
int index)
{
/* Assume that all dimensions from index+1 to rank-1 are !unlimited */
int i;
int rank = odom->rank;
int lastdim = (index == (rank - 1)); /* last dimension*/
int firstdim = (index == 0);
int isunlimited = (odom->declsize[index] == NC_UNLIMITED);
int exploded = 0;
Constant* con;
if(lastdim) {
gen_chararraysuffix(vsym,databuf,src,odom,index);
return;
}
ASSERT(index >= 0 && index < rank);
odom->index[index] = odom->start[index]; /* reset */
if(isunlimited) {
size_t slicesize;
Constant* con;
if(!firstdim) {
if(!issublist(src)) {
semerror(srcline(src),"Unlimited data must be enclosed in {..}");
return;
}
srcpush(src); /* enter the unlimited data */
}
con=srcpeek(src);
/* Break up the constant if it is too large */
slicesize = odomsubarray(odom,index+1);
if(con != NULL && con->value.stringv.len > slicesize) {
/* Constant is larger than just our slice */
/* Explode the constant into subchunks */
exploded = stringexplode(src,slicesize);
}
while((con=srcpeek(src))!=NULL) {
gen_chararray(vsym,databuf,src,odom,index+1);
odom->index[index]++;
}
odom->unlimitedsize[index] = odom->index[index];
if(exploded) srcpop(src);
if(!firstdim) srcpop(src);
} else { /* !isunlimited*/
size_t slicesize;
con = srcpeek(src);
ASSERT(!lastdim);
/* Break up the constant if it is too large */
slicesize = odomsubarray(odom,index+1);
if(con != NULL && con->value.stringv.len > slicesize) {
/* Constant is larger than just our slice */
/* Explode the constant into subchunks */
exploded = stringexplode(src,slicesize);
}
for(i=0;i<odom->declsize[index];i++) {
gen_chararray(vsym,databuf,src,odom,index+1);
}
if(exploded) srcpop(src);
}
}
