static int
_report_error(int err,
dident arg1, /* any arity */
dident module, /* arity 0 */
type mod_tag)
{
int res;
pword *old_tg = TG;
pword *tg = TG;
pword mod, goal;
Make_Struct(&goal, TG);
Push_Struct_Frame(d_.syserror); ++tg;
Make_Integer(tg, -err); ++tg;
Make_Struct(tg, TG); ++tg;
tg->val.did = module;
tg++->tag.all = mod_tag.all;
tg->val.did = module;
tg++->tag.all = mod_tag.all;
Push_Struct_Frame(d_.quotient); ++tg;
Make_Atom(tg, add_dict(arg1,0)); ++tg;
Make_Integer(tg, DidArity(arg1));
mod.val.did = d_.kernel_sepia;
mod.tag.kernel = ModuleTag(d_.kernel_sepia);
res = query_emulc(goal.val, goal.tag, mod.val, mod.tag);
TG = old_tg;
return res;
}
static pword
_heap_arr_get(t_ext_ptr h, int i) /* assumed to return dereferenced result */
{
pword result;
pword *pheap;
int arity;
pheap = ((t_heap_array*)h)->array;
arity = DidArity(pheap[0].val.did);
a_mutex_lock(&SharedDataLock);
if (i > 0 && i <= arity)
{
get_heapterm(&pheap[i], &result);
}
else /* get the whole array-term */
{
Make_Struct(&result,TG);
Push_Struct_Frame(pheap[0].val.did);
for (i=1; i<=arity; ++i)
{
get_heapterm(&pheap[i], &result.val.ptr[i]);
}
}
a_mutex_unlock(&SharedDataLock);
return result;
}
int
ec_load_eco_from_stream(stream_id nst, int options, pword *module)
{
int res;
pword *clause, *query, *pw;
pword query_pw, kernel_pw;
pword top_module = *module;
int encoded = 0;
/* we are expecting an eco-encoded file, but we allow text as well */
res = _read_eco_header(nst);
encoded = (res == PSUCCEED);
StreamMode(nst) |= SNOMACROEXP; /* to avoid problems in text-eco files */
kernel_pw.val.did = d_.kernel_sepia;
kernel_pw.tag.kernel = ModuleTag(d_.kernel_sepia);
for(;;)
{
int recreate_module = 0;
pword exports_pw, language_pw;
pword *new_module = 0;
if (encoded) /* encoded dbformat */
{
int n;
word nread;
char *s = ec_getstring(nst, 4, &nread);
if (!(s))
return nread; /* error code */
if (nread < 4)
return (nread == 0) ? PSUCCEED : UNEXPECTED_EOF;
n = (unsigned char) *s++ << 24;
n |= (unsigned char) *s++ << 16;
n |= (unsigned char) *s++ << 8;
n |= (unsigned char) *s;
s = ec_getstring(nst, n, &nread);
if (!(s))
return nread; /* error code */
if (nread < n)
return UNEXPECTED_EOF;
clause = dbformat_to_term(s, module->val.did, module->tag);
if (!clause)
return NOT_DUMP_FILE;
}
else /* text format, call the parser */
{
res = ec_read_term(nst,
(GlobalFlags & VARIABLE_NAMES ? VARNAMES_PLEASE : 0),
&query_pw, 0, 0, module->val, module->tag);
if (res != PSUCCEED)
return (res == PEOF) ? PSUCCEED : NOT_DUMP_FILE;
clause = &query_pw;
}
Dereference_(clause);
if (!IsStructure(clause->tag) || !Query(clause->val.ptr->val.did))
return NOT_DUMP_FILE;
pw = query = clause->val.ptr + 1;
Dereference_(pw);
if (IsStructure(pw->tag)) /* look for special directives */
{
if (pw->val.ptr->val.did == d_.module1)
{
recreate_module = 1;
new_module = &pw->val.ptr[1];
Make_Nil(&exports_pw);
Make_Atom(&language_pw, d_eclipse_language_);
}
if (pw->val.ptr->val.did == d_module_interface)
{
recreate_module = 1;
new_module = &pw->val.ptr[1];
Make_Nil(&exports_pw);
Make_Atom(&language_pw, d_eclipse_language_);
}
else if (pw->val.ptr->val.did == d_module2)
{
recreate_module = 1;
new_module = &pw->val.ptr[1];
exports_pw = pw->val.ptr[2];
Make_Atom(&language_pw, d_eclipse_language_);
}
else if (pw->val.ptr->val.did == d_module3)
{
recreate_module = 1;
new_module = &pw->val.ptr[1];
exports_pw = pw->val.ptr[2];
language_pw = pw->val.ptr[3];
}
else if (pw->val.ptr->val.did == d_begin_module)
{
new_module = &pw->val.ptr[1];
query = &query_pw; /* don't execute anything */
Make_Atom(query, d_.true0);
}
else if (pw->val.ptr->val.did == d_.pragma)
{
query = &query_pw; /* ignore pragmas, replace with true */
Make_Atom(query, d_.true0);
}
}
else if (pw->val.did == d_.system || pw->val.did == d_.system_debug)
{
query = &query_pw; /* ignore pragmas, replace with true */
Make_Atom(query, d_.true0);
}
if (recreate_module) /* build translated module query */
{
pword *pgoal, *pcont;
query = &query_pw;
Make_Struct(query, TG);
/* If module changes, raise CODE_UNIT_LOADED event first */
if (module->val.did != top_module.val.did)
{
pcont = TG;
Push_Struct_Frame(d_.comma);
Make_Struct(&pcont[1], TG);
pgoal = TG;
Push_Struct_Frame(d_.syserror);
Make_Integer(&pgoal[1], CODE_UNIT_LOADED);
Make_Atom(&pgoal[2], d_.eof);
pgoal[3] = *module;
pgoal[4] = *module;
Make_Struct(&pcont[2], TG);
}
pcont = TG;
Push_Struct_Frame(d_.comma);
Make_Struct(&pcont[1], TG);
pgoal = TG;
Push_Struct_Frame(d_erase_module_);
pgoal[1] = *new_module;
Make_Struct(&pcont[2], TG);
pgoal = TG;
Push_Struct_Frame(d_create_module3_);
pgoal[1] = *new_module;
pgoal[2] = exports_pw;
pgoal[3] = language_pw;
res = query_emulc(query->val, query->tag, kernel_pw.val, kernel_pw.tag);
}
else
{
/* execute the query/directive */
res = query_emulc(query->val, query->tag, module->val, module->tag);
}
if (res != PSUCCEED)
{
pw = TG;
Push_Struct_Frame(d_.syserror);
Make_Integer(&pw[1], QUERY_FAILED);
pw[2] = *query;
pw[3] = *module;
pw[4] = *module;
query = &query_pw;
Make_Struct(query, pw);
(void) query_emulc(query->val, query->tag, kernel_pw.val, kernel_pw.tag);
}
if (new_module) /* change to new context module */
{
Dereference_(new_module);
*module = *new_module;
}
}
return PSUCCEED;
}