68 lines
2.1 KiB
C++
68 lines
2.1 KiB
C++
/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
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/*
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* Main authors:
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* Guido Tack <guido.tack@monash.edu>
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*/
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include <minizinc/flat_exp.hh>
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namespace MiniZinc {
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EE flatten_setlit(EnvI& env, const Ctx& ctx, Expression* e, VarDecl* r, VarDecl* b) {
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CallStackItem _csi(env, e);
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EE ret;
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auto* sl = e->cast<SetLit>();
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assert(sl->isv() == nullptr && sl->fsv() == nullptr);
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std::vector<EE> elems_ee(sl->v().size());
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for (unsigned int i = sl->v().size(); (i--) != 0U;) {
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elems_ee[i] = flat_exp(env, ctx, sl->v()[i], nullptr, nullptr);
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}
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std::vector<Expression*> elems(elems_ee.size());
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bool allPar = true;
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bool hadOpt = false;
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for (auto i = static_cast<unsigned int>(elems.size()); (i--) != 0U;) {
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elems[i] = elems_ee[i].r();
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allPar = allPar && elems[i]->type().isPar();
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hadOpt = hadOpt || elems[i]->type().isOpt();
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}
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ret.b = conj(env, b, Ctx(), elems_ee);
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if (allPar) {
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GCLock lock;
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auto* nsl = new SetLit(Location().introduce(), elems);
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Type nsl_t(e->type());
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nsl_t.ti(Type::TI_PAR);
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nsl->type(nsl_t);
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Expression* ee = eval_set_lit(env, nsl);
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ret.r = bind(env, Ctx(), r, ee);
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} else {
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GCLock lock;
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auto* al = new ArrayLit(sl->loc(), elems);
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Type al_t = Type::varint(1);
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if (hadOpt) {
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al_t.ot(Type::OT_OPTIONAL);
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}
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al->type(al_t);
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std::vector<Expression*> args(1);
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args[0] = al;
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Call* cc = new Call(sl->loc().introduce(), "array2set", args);
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cc->type(Type::varsetint());
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FunctionI* fi = env.model->matchFn(env, cc->id(), args, false);
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if (fi == nullptr) {
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throw FlatteningError(env, cc->loc(), "cannot find matching declaration");
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}
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assert(fi);
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assert(env.isSubtype(fi->rtype(env, args, false), cc->type(), false));
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cc->decl(fi);
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EE ee = flat_exp(env, Ctx(), cc, nullptr, constants().varTrue);
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ret.r = bind(env, Ctx(), r, ee.r());
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}
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return ret;
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}
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} // namespace MiniZinc
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