+
+
+
+//////////////////////////////////////////// Grammar stuff
+
+extern "C" value caml_grammar_load(value file, value load_bp)
+{
+ CAMLparam2(file, load_bp);
+ CAMLlocal1(result);
+ Grammar *grammar;
+ int f1 = Int_val(file);
+ int f2 = dup(f1);
+ FILE * fd = fdopen(f2, "r");
+ if (fd == NULL)
+ CAMLRAISEMSG("Error opening grammar file");
+ grammar = Grammar::load(fd, Bool_val(load_bp));
+ fclose(fd);
+ result = sxsi_alloc_custom<Grammar*>();
+ Obj_val<Grammar*>(result) = grammar;
+ CAMLreturn(result);
+}
+
+extern "C" value caml_grammar_get_symbol_at(value grammar, value symbol, value preorder)
+{
+ CAMLparam3(grammar, symbol, preorder);
+ CAMLreturn(Val_long(GRAMMAR(grammar)->getSymbolAt(Long_val(symbol), Int_val(preorder))));
+}
+
+extern "C" value caml_grammar_first_child(value grammar, value rule, value pos)
+{
+ CAMLparam1(grammar);
+ CAMLreturn(Val_int(GRAMMAR(grammar)->firstChild(Long_val(rule), Int_val(pos))));
+}
+
+extern "C" value caml_grammar_next_sibling(value grammar, value rule, value pos)
+{
+ CAMLparam1(grammar);
+ CAMLreturn(Val_int(GRAMMAR(grammar)->nextSibling(Long_val(rule), Int_val(pos))));
+}
+
+extern "C" value caml_grammar_start_first_child(value grammar, value pos)
+{
+ CAMLparam1(grammar);
+ CAMLreturn(Val_int(GRAMMAR(grammar)->startFirstChild(Int_val(pos))));
+}
+
+extern "C" value caml_grammar_start_next_sibling(value grammar, value pos)
+{
+ CAMLparam1(grammar);
+ CAMLreturn(Val_int(GRAMMAR(grammar)->startNextSibling(Int_val(pos))));
+}
+
+extern "C" value caml_grammar_is_nil(value grammar, value rule)
+{
+ CAMLparam1(grammar);
+ CAMLreturn(Val_bool(GRAMMAR(grammar)->isNil(Long_val(rule))));
+}
+
+extern "C" value caml_grammar_get_tag(value grammar, value tag)
+{
+ CAMLparam1(grammar);
+ CAMLlocal1(res);
+ const char * s = (GRAMMAR(grammar)->getTagName(Long_val(tag))).c_str();
+ res = caml_copy_string(s);
+ CAMLreturn(res);
+}
+
+extern "C" value caml_grammar_get_id1(value grammar, value rule)
+{
+ CAMLparam1(grammar);
+ CAMLreturn(Val_long(GRAMMAR(grammar)->getID1(Long_val(rule))));
+}
+
+extern "C" value caml_grammar_get_id2(value grammar, value rule)
+{
+ CAMLparam1(grammar);
+ CAMLreturn(Val_long(GRAMMAR(grammar)->getID2(Long_val(rule))));
+}
+
+extern "C" value caml_grammar_get_param_pos(value grammar, value rule)
+{
+ CAMLparam1(grammar);
+ CAMLreturn(Val_int(GRAMMAR(grammar)->getParamPos(Long_val(rule))));
+}
+
+extern "C" value caml_grammar_translate_tag(value grammar, value tag)
+{
+ CAMLparam1(grammar);
+ CAMLreturn(Val_int(GRAMMAR(grammar)->translateTag(Int_val(tag))));
+}
+
+extern "C" value caml_grammar_register_tag(value grammar, value str)
+{
+ CAMLparam2(grammar, str);
+ char * s = String_val(str);
+ CAMLreturn(Val_int(GRAMMAR(grammar)->getTagID(s)));
+}
+
+extern "C" value caml_grammar_nil_id(value grammar)
+{
+ CAMLparam1(grammar);
+ CAMLreturn(Val_long((GRAMMAR(grammar)->getNiltagid()) * 4 + 1));
+}
+
+extern "C" {
+extern char *caml_young_end;
+extern char *caml_young_start;
+typedef char * addr;
+#define Is_young(val) \
+ ((addr)(val) < (addr)caml_young_end && (addr)(val) > (addr)caml_young_start)
+
+}
+extern "C" value caml_custom_is_young(value a){
+ return Val_bool(Is_young(a));
+}
+
+extern "C" value caml_custom_array_blit(value a1, value ofs1, value a2, value ofs2,
+ value n)
+{
+ value * src, * dst;
+ intnat count;
+
+ if (Is_young(a2)) {
+ /* Arrays of values, destination is in young generation.
+ Here too we can do a direct copy since this cannot create
+ old-to-young pointers, nor mess up with the incremental major GC.
+ Again, memmove takes care of overlap. */
+ memmove(&Field(a2, Long_val(ofs2)),
+ &Field(a1, Long_val(ofs1)),
+ Long_val(n) * sizeof(value));
+ return Val_unit;
+ }
+ /* Array of values, destination is in old generation.
+ We must use caml_modify. */
+ count = Long_val(n);
+ if (a1 == a2 && Long_val(ofs1) < Long_val(ofs2)) {
+ /* Copy in descending order */
+ for (dst = &Field(a2, Long_val(ofs2) + count - 1),
+ src = &Field(a1, Long_val(ofs1) + count - 1);
+ count > 0;
+ count--, src--, dst--) {
+ caml_modify(dst, *src);
+ }
+ } else {
+ /* Copy in ascending order */
+ for (dst = &Field(a2, Long_val(ofs2)), src = &Field(a1, Long_val(ofs1));
+ count > 0;
+ count--, src++, dst++) {
+ caml_modify(dst, *src);
+ }
+ }
+ /* Many caml_modify in a row can create a lot of old-to-young refs.
+ Give the minor GC a chance to run if it needs to. */
+ //caml_check_urgent_gc(Val_unit);
+ return Val_unit;
+}
+
+
+////////////////////// BP
+
+extern "C" value caml_bitmap_create(value size)
+{
+ CAMLparam1(size);
+ size_t bits = Long_val(size);
+ size_t words = bits / (8*sizeof(unsigned int));
+ unsigned int *buffer = (unsigned int*) calloc(words+1, sizeof(unsigned int));
+ if (buffer == NULL)
+ CAMLRAISEMSG("BP: cannot allocate memory");
+ CAMLreturn( (value) buffer);
+}
+
+extern "C" value caml_bitmap_resize(value bitmap, value nsize)
+{
+ CAMLparam2(bitmap, nsize);
+ size_t bits = Long_val(nsize);
+ size_t bytes = (bits / (8 * sizeof(unsigned int)) + 1 ) * sizeof(unsigned int);
+ unsigned int * buffer = (unsigned int*) realloc((void *) bitmap, bytes);
+ if (buffer == NULL)
+ CAMLRAISEMSG("BP: cannot reallocate memory");
+ CAMLreturn((value) buffer);
+}
+
+extern "C" value caml_bitmap_setbit(value bitmap, value i, value b)
+{
+ CAMLparam3(bitmap, i, b);
+ unsigned int j = Int_val(i);
+ unsigned int x = Bool_val(b);
+ bp_setbit ((unsigned int*) bitmap, j, x);
+ CAMLreturn(Val_unit);
+}
+
+extern "C" void caml_bp_delete(value b)
+{
+ CAMLparam1(b);
+ bp * B = Obj_val<bp*>(b);
+ bp_delete(B);
+ CAMLreturn0;
+}
+
+extern "C" value caml_bp_construct(value bitmap, value npar)
+{
+ CAMLparam2(bitmap, npar);
+ CAMLlocal1(res);
+ bp * b = bp_construct(Int_val(npar), (unsigned int *) bitmap, OPT_DEGREE);
+ res = sxsi_alloc_custom<bp*>(caml_bp_delete);
+ Obj_val<bp*>(res) = b;
+ CAMLreturn(res);
+}
+
+extern "C" value caml_bp_first_child(value b, value idx)
+{
+ CAMLparam2(b, idx);
+ CAMLreturn (Val_int( bp_first_child(Obj_val<bp*>(b), Int_val(idx))));
+}
+
+
+extern "C" value caml_bp_next_sibling(value b, value idx)
+{
+ CAMLparam2(b, idx);
+ CAMLreturn (Val_int(bp_next_sibling(Obj_val<bp*>(b), Int_val(idx))));
+}
+
+extern "C" value caml_bp_preorder_rank(value b, value idx)
+{
+ CAMLparam2(b, idx);
+ CAMLreturn (Val_int(bp_preorder_rank(Obj_val<bp*>(b), Int_val(idx)) - 1));
+}
+
+
+extern "C" value caml_bp_load(value file)
+{
+ CAMLparam1(file);
+ CAMLlocal1(result);
+ bp *B;
+ int f1 = Int_val(file);
+ int f2 = dup(f1);
+ FILE * fd = fdopen(f2, "r");
+ if (fd == NULL)
+ CAMLRAISEMSG("Error opening bp file");
+ B = loadTree(fd);
+ fclose(fd);
+ result = sxsi_alloc_custom<bp*>(caml_bp_delete);
+ Obj_val<bp*>(result) = B;
+ CAMLreturn(result);
+}
+
+extern "C" value caml_bp_save(value b, value file)
+{
+ CAMLparam2(b, file);
+ bp *B = Obj_val<bp*>(b);
+ int f1 = Int_val(file);
+ int f2 = dup(f1);
+ FILE * fd = fdopen(f2, "a");
+ fflush(stderr);
+ if (fd == NULL)
+ CAMLRAISEMSG("Error saving bp file");
+ saveTree(B, fd);
+ fclose(fd);
+ CAMLreturn(Val_unit);
+}
+
+extern "C" value caml_bp_alloc_stats(value unit)
+{
+ CAMLparam1(unit);
+ CAMLreturn (Val_long(bp_get_alloc_stats()));
+}