1 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2
3 /*
4 * Main authors:
5 * Guido Tack <guido.tack@monash.edu>
6 */
7
8 /* This Source Code Form is subject to the terms of the Mozilla Public
9 * License, v. 2.0. If a copy of the MPL was not distributed with this
10 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
11
12 #include <minizinc/flat_exp.hh>
13
14 namespace MiniZinc {
15
flatten_setlit(EnvI & env,const Ctx & ctx,Expression * e,VarDecl * r,VarDecl * b)16 EE flatten_setlit(EnvI& env, const Ctx& ctx, Expression* e, VarDecl* r, VarDecl* b) {
17 CallStackItem _csi(env, e);
18 EE ret;
19 auto* sl = e->cast<SetLit>();
20 assert(sl->isv() == nullptr && sl->fsv() == nullptr);
21 std::vector<EE> elems_ee(sl->v().size());
22 for (unsigned int i = sl->v().size(); (i--) != 0U;) {
23 elems_ee[i] = flat_exp(env, ctx, sl->v()[i], nullptr, nullptr);
24 }
25 std::vector<Expression*> elems(elems_ee.size());
26 bool allPar = true;
27 bool hadOpt = false;
28 for (auto i = static_cast<unsigned int>(elems.size()); (i--) != 0U;) {
29 elems[i] = elems_ee[i].r();
30 allPar = allPar && elems[i]->type().isPar();
31 hadOpt = hadOpt || elems[i]->type().isOpt();
32 }
33
34 ret.b = conj(env, b, Ctx(), elems_ee);
35 if (allPar) {
36 GCLock lock;
37 auto* nsl = new SetLit(Location().introduce(), elems);
38 Type nsl_t(e->type());
39 nsl_t.ti(Type::TI_PAR);
40 nsl->type(nsl_t);
41 Expression* ee = eval_set_lit(env, nsl);
42 ret.r = bind(env, Ctx(), r, ee);
43 } else {
44 GCLock lock;
45 auto* al = new ArrayLit(sl->loc(), elems);
46 Type al_t = Type::varint(1);
47 if (hadOpt) {
48 al_t.ot(Type::OT_OPTIONAL);
49 }
50 al->type(al_t);
51 std::vector<Expression*> args(1);
52 args[0] = al;
53 Call* cc = new Call(sl->loc().introduce(), "array2set", args);
54 cc->type(Type::varsetint());
55 FunctionI* fi = env.model->matchFn(env, cc->id(), args, false);
56 if (fi == nullptr) {
57 throw FlatteningError(env, cc->loc(), "cannot find matching declaration");
58 }
59 assert(fi);
60 assert(env.isSubtype(fi->rtype(env, args, false), cc->type(), false));
61 cc->decl(fi);
62 EE ee = flat_exp(env, Ctx(), cc, nullptr, constants().varTrue);
63 ret.r = bind(env, Ctx(), r, ee.r());
64 }
65 return ret;
66 }
67 } // namespace MiniZinc
68