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dekker.one
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
14namespace MiniZinc {
15
16EE 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 Expression* ee = eval_set_lit(env, e);
38 ret.r = bind(env, Ctx(), r, ee);
39 } else {
40 GCLock lock;
41 auto* al = new ArrayLit(sl->loc(), elems);
42 Type al_t = Type::varint(1);
43 if (hadOpt) {
44 al_t.ot(Type::OT_OPTIONAL);
45 }
46 al->type(al_t);
47 std::vector<Expression*> args(1);
48 args[0] = al;
49 Call* cc = new Call(sl->loc().introduce(), "array2set", args);
50 cc->type(Type::varsetint());
51 FunctionI* fi = env.model->matchFn(env, cc->id(), args, false);
52 if (fi == nullptr) {
53 throw FlatteningError(env, cc->loc(), "cannot find matching declaration");
54 }
55 assert(fi);
56 assert(env.isSubtype(fi->rtype(env, args, false), cc->type(), false));
57 cc->decl(fi);
58 EE ee = flat_exp(env, Ctx(), cc, nullptr, constants().varTrue);
59 ret.r = bind(env, Ctx(), r, ee.r());
60 }
61 return ret;
62}
63} // namespace MiniZinc