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fzn-gecode.cpp
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1 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2 /*
3  * Main authors:
4  * Guido Tack <tack@gecode.org>
5  *
6  * Copyright:
7  * Guido Tack, 2007
8  *
9  * Last modified:
10  * $Date: 2015-01-05 07:33:06 +0100 (Mon, 05 Jan 2015) $ by $Author: tack $
11  * $Revision: 14337 $
12  *
13  * This file is part of Gecode, the generic constraint
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15  * http://www.gecode.org
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37 
38 #include <iostream>
39 #include <fstream>
40 #include <gecode/flatzinc.hh>
41 
42 using namespace std;
43 using namespace Gecode;
44 
45 int main(int argc, char** argv) {
46 
47  Support::Timer t_total;
48  t_total.start();
49  FlatZinc::FlatZincOptions opt("Gecode/FlatZinc");
50  opt.parse(argc, argv);
51 
52  if (argc!=2) {
53  cerr << "Usage: " << argv[0] << " [options] <file>" << endl;
54  cerr << " " << argv[0] << " -help for more information" << endl;
55  exit(EXIT_FAILURE);
56  }
57 
58  const char* filename = argv[1];
59  opt.name(filename);
60 
62  FlatZinc::FlatZincSpace* fg = NULL;
63  FlatZinc::FznRnd rnd(opt.seed());
64  try {
65  if (!strcmp(filename, "-")) {
66  fg = FlatZinc::parse(cin, p, std::cerr, NULL, &rnd);
67  } else {
68  fg = FlatZinc::parse(filename, p, std::cerr, NULL, &rnd);
69  }
70 
71  if (fg) {
72 
73  fg->createBranchers(fg->solveAnnotations(), opt.seed(), opt.decay(),
74  false, std::cerr);
75  fg->shrinkArrays(p);
76  if (opt.output()) {
77  std::ofstream os(opt.output());
78  if (!os.good()) {
79  std::cerr << "Could not open file " << opt.output() << " for output."
80  << std::endl;
81  exit(EXIT_FAILURE);
82  }
83  fg->run(os, p, opt, t_total);
84  os.close();
85  } else {
86  fg->run(std::cout, p, opt, t_total);
87  }
88  } else {
89  exit(EXIT_FAILURE);
90  }
91  delete fg;
92  } catch (FlatZinc::Error& e) {
93  std::cerr << "Error: " << e.toString() << std::endl;
94  return 1;
95  }
96 
97  return 0;
98 }
99 
100 // STATISTICS: flatzinc-any
void shrinkArrays(Printer &p)
Remove all variables not needed for output.
Definition: flatzinc.cpp:1714
Options for running FlatZinc models
Definition: flatzinc.hh:205
void createBranchers(AST::Node *ann, int seed, double decay, bool ignoreUnknown, std::ostream &err=std::cerr)
Create branchers corresponding to the solve item annotations.
Definition: flatzinc.cpp:879
const char * output(void) const
Definition: flatzinc.hh:309
A thread-safe random number generator.
Definition: flatzinc.hh:354
GECODE_FLATZINC_EXPORT FlatZincSpace * parse(const std::string &fileName, Printer &p, std::ostream &err=std::cerr, FlatZincSpace *fzs=NULL, FznRnd *rnd=NULL)
Parse FlatZinc file fileName into fzs and return it.
double decay(void) const
Definition: flatzinc.hh:314
void start(void)
Start timer.
Definition: timer.hpp:70
int p
Number of positive literals for node type.
Definition: bool-expr.cpp:236
Options opt
The options.
Definition: test.cpp:101
Output support class for FlatZinc interpreter.
Definition: flatzinc.hh:111
const std::string & toString(void) const
Definition: flatzinc.hh:597
int main(int argc, char **argv)
Definition: fzn-gecode.cpp:45
Exception class for FlatZinc errors
Definition: flatzinc.hh:591
A space that can be initialized with a FlatZinc model.
Definition: flatzinc.hh:371
void run(std::ostream &out, const Printer &p, const FlatZincOptions &opt, Gecode::Support::Timer &t_total)
Run the search.
Definition: flatzinc.cpp:1580
Gecode toplevel namespace
const char * name(void) const
Return name of script.
Definition: options.hpp:144
void parse(int &argc, char *argv[])
Definition: flatzinc.hh:283
AST::Array * solveAnnotations(void) const
Return the solve item annotations.
Definition: flatzinc.cpp:1309