// returns either an expression or a thunk
jl_value_t *jl_expand(jl_value_t *expr)
{
int np = jl_gc_n_preserved_values();
value_t arg = julia_to_scm(expr);
value_t e = fl_applyn(1, symbol_value(symbol("jl-expand-to-thunk")), arg);
jl_value_t *result = scm_to_julia(e,0);
while (jl_gc_n_preserved_values() > np) {
jl_gc_unpreserve();
}
return result;
}
DLLEXPORT jl_value_t *jl_macroexpand(jl_value_t *expr)
{
int np = jl_gc_n_preserved_values();
value_t arg = julia_to_scm(expr);
value_t e = fl_applyn(1, symbol_value(symbol("jl-macroexpand")), arg);
jl_value_t *result;
result = scm_to_julia(e);
while (jl_gc_n_preserved_values() > np) {
jl_gc_unpreserve();
}
return result;
}
// returns either an expression or a thunk
jl_value_t *jl_expand(jl_value_t *expr)
{
int np = jl_gc_n_preserved_values();
value_t arg = julia_to_scm(expr);
value_t e = fl_applyn(1, symbol_value(symbol("jl-expand-to-thunk")), arg);
jl_value_t *result;
if (e == FL_T || e == FL_F || e == FL_EOF) {
result = NULL;
}
else {
result = scm_to_julia(e);
}
while (jl_gc_n_preserved_values() > np) {
jl_gc_unpreserve();
}
return result;
}
static jl_array_t *_new_array(jl_type_t *atype,
uint32_t ndims, size_t *dims)
{
size_t i, tot, nel=1;
int isunboxed=0, elsz;
void *data;
jl_array_t *a;
for(i=0; i < ndims; i++) {
nel *= dims[i];
}
jl_type_t *el_type = (jl_type_t*)jl_tparam0(atype);
isunboxed = jl_is_bits_type(el_type);
if (isunboxed) {
elsz = jl_bitstype_nbits(el_type)/8;
tot = elsz * nel;
if (elsz == 1) {
// hidden 0 terminator for all byte arrays
tot++;
}
}
else {
elsz = sizeof(void*);
tot = sizeof(void*) * nel;
}
int ndimwords = (ndims > 2 ? (ndims-2) : 0);
#ifndef __LP64__
// on 32-bit, ndimwords must be odd to preserve 8-byte alignment
ndimwords += (~ndimwords)&1;
#endif
if (tot <= ARRAY_INLINE_NBYTES) {
a = allocobj(sizeof(jl_array_t) + tot + (ndimwords-1)*sizeof(size_t));
a->type = atype;
data = (&a->_space[0] + ndimwords*sizeof(size_t));
if (tot > 0 && !isunboxed) {
memset(data, 0, tot);
}
}
else {
a = allocobj(sizeof(jl_array_t) + (ndimwords-1)*sizeof(size_t));
jl_gc_preserve((jl_value_t*)a);
a->type = atype;
// temporarily initialize to make gc-safe
a->data = NULL;
a->length = 0;
a->reshaped = 0;
data = alloc_array_buffer(tot, isunboxed);
jl_gc_unpreserve();
}
a->data = data;
if (elsz == 1) ((char*)data)[tot-1] = '\0';
a->length = nel;
a->ndims = ndims;
a->reshaped = 0;
a->elsize = elsz;
if (ndims == 1) {
a->nrows = nel;
a->maxsize = nel;
a->offset = 0;
}
else {
size_t *adims = &a->nrows;
for(i=0; i < ndims; i++)
adims[i] = dims[i];
}
return a;
}