1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
|
/* -*- 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/eval_par.hh>
#include <minizinc/solver_instance_base.hh>
#ifdef _MSC_VER
#define _CRT_SECURE_NO_WARNINGS
#endif
namespace MiniZinc {
SolverInstanceBase::Status SolverInstanceBase::solve() { return SolverInstanceError; }
void SolverInstanceBase::reset() { assert(false); }
void SolverInstanceBase::resetWithConstraints(Model::iterator begin, Model::iterator end) {
assert(false);
}
void SolverInstanceBase::processPermanentConstraints(Model::iterator begin, Model::iterator end) {
assert(false);
}
void Registry::add(const ASTString name, poster p) { _registry.insert(std::make_pair(name, p)); }
void Registry::add(const std::string& name, poster p) {
GCLock lock;
ASTString str(name);
add(str, p);
}
void Registry::post(Call* c) {
auto it = _registry.find(c->id());
if (it == _registry.end()) {
std::ostringstream ss;
ss << "Error: solver backend cannot handle constraint: " << c->id();
throw InternalError(ss.str());
}
it->second(_base, c);
}
void SolverInstanceBase::printSolution() {
if (_options->printStatistics) {
printStatistics(); // Insert stats before sol separator
}
if (nullptr == _pS2Out) {
getEnv()->evalOutput(std::cout, std::cerr); // deprecated
std::cout << "----------" << std::endl;
} else {
getSolns2Out()->evalOutput();
}
}
template class SolverInstanceBase2<false>;
template class SolverInstanceBase2<true>;
template <bool AsgArray>
void SolverInstanceBase2<AsgArray>::printSolution() {
GCLock lock;
assignSolutionToOutput();
SolverInstanceBase::printSolution();
}
// void
// SolverInstanceBase::assignSolutionToOutput() {
// for (VarDeclIterator it = getEnv()->output()->vardecls().begin(); it !=
// getEnv()->output()->vardecls().end(); ++it) {
// if (it->e()->e() == NULL) {
// it->e()->e(getSolutionValue(it->e()->id()));
// }
// }
// }
template <bool AsgArray>
void SolverInstanceBase2<AsgArray>::assignSolutionToOutput() {
GCLock lock;
MZN_ASSERT_HARD_MSG(
nullptr != _pS2Out,
"Setup a Solns2Out object to use default solution extraction/reporting procs");
if (_varsWithOutput.empty()) {
for (VarDeclIterator it = getEnv()->flat()->vardecls().begin();
it != getEnv()->flat()->vardecls().end(); ++it) {
if (!it->removed()) {
VarDecl* vd = it->e();
if (!Expression::ann(vd).isEmpty()) {
if (Expression::ann(vd).containsCall(Constants::constants().ann.output_array.aststr()) ||
Expression::ann(vd).contains(Constants::constants().ann.output_var)) {
_varsWithOutput.push_back(vd);
}
}
}
}
}
_pS2Out->declNewOutput(); // Even for empty output decl
// iterate over set of ids that have an output annotation && obtain their right hand side from the
// flat model
for (auto* vd : _varsWithOutput) {
// std::cout << "DEBUG: Looking at var-decl with output-annotation: " << *vd << std::endl;
Call* output_array_ann =
AsgArray ? nullptr
: Expression::dynamicCast<Call>(get_annotation(
Expression::ann(vd), Constants::constants().ann.output_array.aststr()));
if (output_array_ann != nullptr) {
assert(vd->e());
if (auto* al = Expression::dynamicCast<ArrayLit>(vd->e())) {
std::vector<Expression*> array_elems;
ArrayLit& array = *al;
for (unsigned int j = 0; j < array.size(); j++) {
if (Id* id = Expression::dynamicCast<Id>(array[j])) {
// std::cout << "DEBUG: getting solution value from " << *id << " : " << id->v() <<
// std::endl;
array_elems.push_back(getSolutionValue(id));
} else if (auto* floatLit = Expression::dynamicCast<FloatLit>(array[j])) {
array_elems.push_back(floatLit);
} else if (auto* intLit = Expression::dynamicCast<IntLit>(array[j])) {
array_elems.push_back(intLit);
} else if (auto* boolLit = Expression::dynamicCast<BoolLit>(array[j])) {
array_elems.push_back(boolLit);
} else if (auto* setLit = Expression::dynamicCast<SetLit>(array[j])) {
array_elems.push_back(setLit);
} else if (auto* strLit = Expression::dynamicCast<StringLit>(array[j])) {
array_elems.push_back(strLit);
} else {
std::ostringstream oss;
oss << "Error: array element " << *array[j] << " is not an id nor a literal";
throw InternalError(oss.str());
}
}
GCLock lock;
ArrayLit* dims;
Expression* e = output_array_ann->arg(0);
if (auto* al = Expression::dynamicCast<ArrayLit>(e)) {
dims = al;
} else if (Id* id = Expression::dynamicCast<Id>(e)) {
dims = Expression::cast<ArrayLit>(id->decl()->e());
} else {
throw -1;
}
std::vector<std::pair<int, int> > dims_v;
for (unsigned int i = 0; i < dims->length(); i++) {
IntSetVal* isv = eval_intset(getEnv()->envi(), (*dims)[i]);
if (isv->empty()) {
dims_v.emplace_back(1, 0);
} else {
dims_v.emplace_back(static_cast<int>(isv->min().toInt()),
static_cast<int>(isv->max().toInt()));
}
}
auto* array_solution = new ArrayLit(Location(), array_elems, dims_v);
if (array_elems.empty()) {
Expression::type(array_solution, Type::bot(static_cast<int>(dims_v.size())));
} else {
auto t = Expression::type(array_elems.back());
t.dim(static_cast<int>(dims_v.size()));
Expression::type(array_solution, t);
}
KeepAlive ka(array_solution);
auto& de = getSolns2Out()->findOutputVar(vd->id()->str());
de.first->e(array_solution);
}
} else {
Expression* sol = getSolutionValue(vd->id());
vd->e(sol);
auto& de = getSolns2Out()->findOutputVar(vd->id()->str());
de.first->e(sol);
}
}
}
void SolverInstanceBase::flattenSearchAnnotations(const Annotation& ann,
std::vector<Expression*>& out) {
for (ExpressionSetIter i = ann.begin(); i != ann.end(); ++i) {
Expression* e = *i;
if (Expression::isa<Call>(e) && (Expression::cast<Call>(e)->id() == "seq_search" ||
Expression::cast<Call>(e)->id() == "warm_start_array")) {
Call* c = Expression::cast<Call>(e);
auto* anns = Expression::cast<ArrayLit>(c->arg(0));
for (unsigned int i = 0; i < anns->size(); i++) {
Annotation subann;
subann.add((*anns)[i]);
flattenSearchAnnotations(subann, out);
}
} else {
out.push_back(*i);
}
}
}
void SolverInstanceBase::flattenMultipleObjectives(const Annotation& ann,
MultipleObjectives& mo) const {
int nGoalH = 0;
for (ExpressionSetIter i = ann.begin(); i != ann.end(); ++i) {
Expression* e = *i;
if (Expression::isa<Call>(e) && (Expression::cast<Call>(e)->id() == "goal_hierarchy")) {
MZN_ASSERT_HARD_MSG(0 == nGoalH++, "Several goal hierarchies provided");
MZN_ASSERT_HARD_MSG(getEnv()->flat()->solveItem()->st() == SolveI::SolveType::ST_SAT,
"goal_hierarchy provided but solve item is not SAT");
Call* c = Expression::cast<Call>(e);
auto* anns = Expression::cast<ArrayLit>(c->arg(0));
for (unsigned int i = 0; i < anns->size(); i++) {
Annotation subann;
subann.add((*anns)[i]);
MultipleObjectives::Objective obj;
flattenMultObjComponent(subann, obj);
mo.add(obj);
}
}
}
}
void SolverInstanceBase::flattenMultObjComponent(const Annotation& ann,
MultipleObjectives::Objective& obj) {
MZN_ASSERT_HARD(!ann.isEmpty());
Expression* e = *ann.begin();
MZN_ASSERT_HARD(Expression::isa<Call>(e));
Call* c = Expression::cast<Call>(e);
obj.setVariable(c->arg(0));
const auto id = c->id();
if (id == "min_goal" || id == "int_min_goal" || id == "float_min_goal") {
obj.setWeight(-1.0);
} else if (id == "sat_goal" || id == "max_goal" || id == "int_max_goal" ||
id == "float_max_goal") {
obj.setWeight(1.0);
} else {
MZN_ASSERT_HARD_MSG(false, "unknown goal: " << id);
}
}
} // namespace MiniZinc
|
