55 lines
1.4 KiB
C++
55 lines
1.4 KiB
C++
/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
|
|
|
|
/*
|
|
* Main authors:
|
|
* Guido Tack <guido.tack@monash.edu>
|
|
*/
|
|
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include <minizinc/flat_exp.hh>
|
|
|
|
namespace MiniZinc {
|
|
|
|
EE flatten_unop(EnvI& env, Ctx ctx, Expression* e, VarDecl* r, VarDecl* b) {
|
|
CallStackItem _csi(env, e);
|
|
EE ret;
|
|
UnOp* uo = e->cast<UnOp>();
|
|
switch (uo->op()) {
|
|
case UOT_NOT: {
|
|
Ctx nctx = ctx;
|
|
nctx.b = -nctx.b;
|
|
nctx.neg = !nctx.neg;
|
|
ret = flat_exp(env, nctx, uo->e(), r, b);
|
|
} break;
|
|
case UOT_PLUS:
|
|
ret = flat_exp(env, ctx, uo->e(), r, b);
|
|
break;
|
|
case UOT_MINUS: {
|
|
GC::lock();
|
|
if (UnOp* uo_inner = uo->e()->dyn_cast<UnOp>()) {
|
|
if (uo_inner->op() == UOT_MINUS) {
|
|
ret = flat_exp(env, ctx, uo_inner->e(), r, b);
|
|
break;
|
|
}
|
|
}
|
|
Expression* zero;
|
|
if (uo->e()->type().bt() == Type::BT_INT)
|
|
zero = IntLit::a(0);
|
|
else
|
|
zero = FloatLit::a(0.0);
|
|
BinOp* bo = new BinOp(Location().introduce(), zero, BOT_MINUS, uo->e());
|
|
bo->type(uo->type());
|
|
KeepAlive ka(bo);
|
|
GC::unlock();
|
|
ret = flat_exp(env, ctx, ka(), r, b);
|
|
} break;
|
|
default:
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
} // namespace MiniZinc
|