Jip J. Dekker
f2a1c4e389
git-subtree-dir: software/mza git-subtree-split: f970a59b177c13ca3dd8aaef8cc6681d83b7e813
131 lines
3.7 KiB
C++
131 lines
3.7 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/. */
|
|
|
|
#ifndef __MINIZINC_FLATTEN_HH__
|
|
#define __MINIZINC_FLATTEN_HH__
|
|
|
|
#include <minizinc/astexception.hh>
|
|
#include <minizinc/model.hh>
|
|
|
|
namespace MiniZinc {
|
|
|
|
/// Exception thrown for errors during flattening
|
|
class FlatteningError : public LocationException {
|
|
public:
|
|
FlatteningError(EnvI& env, const Location& loc, const std::string& msg);
|
|
~FlatteningError(void) throw() {}
|
|
virtual const char* what(void) const throw() { return "MiniZinc: flattening error"; }
|
|
};
|
|
|
|
/// Options for the flattener
|
|
struct FlatteningOptions {
|
|
/// Keep output in resulting flat model
|
|
bool keepOutputInFzn;
|
|
/// Verbose output during flattening
|
|
bool verbose;
|
|
/// Only use paths for variables introduced by file 0 (the MiniZinc model)
|
|
bool only_toplevel_paths;
|
|
/// Construct and collect mzn_paths for expressions and VarDeclI during flattening
|
|
bool collect_mzn_paths;
|
|
/// Do not apply domain changes but insert them as constraints (useful for debugging)
|
|
bool record_domain_changes;
|
|
/// Only range domains for old linearization. Set from redefs to true if not here
|
|
bool onlyRangeDomains;
|
|
/// Allow the use of Half Reifications
|
|
bool enable_imp;
|
|
/// Timeout for flattening in milliseconds (0 means no timeout)
|
|
unsigned long long int timeout;
|
|
/// Create standard, DZN or JSON output
|
|
enum OutputMode { OUTPUT_ITEM, OUTPUT_DZN, OUTPUT_JSON } outputMode;
|
|
/// Output objective value (only for DZN and JSON mode)
|
|
bool outputObjective;
|
|
/// Output original output item as string (only for DZN and JSON mode)
|
|
bool outputOutputItem;
|
|
/// Default constructor
|
|
FlatteningOptions(void)
|
|
: keepOutputInFzn(false),
|
|
verbose(false),
|
|
only_toplevel_paths(false),
|
|
collect_mzn_paths(false),
|
|
record_domain_changes(false),
|
|
onlyRangeDomains(false),
|
|
enable_imp(true),
|
|
timeout(0),
|
|
outputMode(OUTPUT_ITEM),
|
|
outputObjective(false),
|
|
outputOutputItem(false) {}
|
|
};
|
|
|
|
class Pass {
|
|
public:
|
|
Pass(){};
|
|
virtual Env* run(Env* env, std::ostream& log) = 0;
|
|
virtual ~Pass(){};
|
|
};
|
|
|
|
/// Flatten model \a m
|
|
void flatten(Env& m, FlatteningOptions opt = FlatteningOptions());
|
|
|
|
/// Translate \a m into old FlatZinc syntax
|
|
void oldflatzinc(Env& m);
|
|
|
|
/// Populate FlatZinc output model
|
|
void populateOutput(Env& e);
|
|
|
|
/// Statistics on flat models
|
|
struct FlatModelStatistics {
|
|
/// Number of integer variables
|
|
int n_int_vars;
|
|
/// Number of bool variables
|
|
int n_bool_vars;
|
|
/// Number of float variables
|
|
int n_float_vars;
|
|
/// Number of set variables
|
|
int n_set_vars;
|
|
/// Number of bool constraints
|
|
int n_bool_ct;
|
|
/// Number of integer constraints
|
|
int n_int_ct;
|
|
/// Number of float constraints
|
|
int n_float_ct;
|
|
/// Number of set constraints
|
|
int n_set_ct;
|
|
/// Number of reified constraints evaluated
|
|
int n_reif_ct;
|
|
/// Number of half-reified constraints evaluated
|
|
int n_imp_ct;
|
|
/// Number of implications eliminated using path compression
|
|
int n_imp_del;
|
|
/// Number of linear expressions eliminated using path compression
|
|
int n_lin_del;
|
|
/// Constructor
|
|
FlatModelStatistics(void)
|
|
: n_int_vars(0),
|
|
n_bool_vars(0),
|
|
n_float_vars(0),
|
|
n_set_vars(0),
|
|
n_bool_ct(0),
|
|
n_int_ct(0),
|
|
n_float_ct(0),
|
|
n_set_ct(0),
|
|
n_reif_ct(0),
|
|
n_imp_ct(0),
|
|
n_imp_del(0),
|
|
n_lin_del(0) {}
|
|
};
|
|
|
|
/// Compute statistics for flat model in \a m
|
|
FlatModelStatistics statistics(Model* m);
|
|
|
|
} // namespace MiniZinc
|
|
|
|
#endif
|