Jip J. Dekker
f2a1c4e389
git-subtree-dir: software/mza git-subtree-split: f970a59b177c13ca3dd8aaef8cc6681d83b7e813
130 lines
3.9 KiB
C++
130 lines
3.9 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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#ifndef __MINIZINC_FZN_SOLVER_INSTANCE_HH__
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#define __MINIZINC_FZN_SOLVER_INSTANCE_HH__
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#include <minizinc/flattener.hh>
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#include <minizinc/solver.hh>
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#include <minizinc/solvers/incremental_interfaces.hh>
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//#include <minizinc/solver_instance_base.hh>
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namespace MiniZinc {
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class FZNSolverOptions : public SolverInstanceBase::Options {
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public:
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std::string fzn_solver;
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std::string backend;
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std::vector<std::string> fzn_flags;
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int numSols = 1;
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bool allSols = false;
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std::string parallel;
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int fzn_time_limit_ms = 0;
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int solver_time_limit_ms = 0;
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bool fzn_sigint = false;
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bool fzn_needs_paths = false;
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bool fzn_output_passthrough = false;
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bool supports_a = false;
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bool supports_n = false;
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bool supports_f = false;
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bool supports_p = false;
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bool supports_s = false;
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bool supports_r = false;
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bool supports_v = false;
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bool supports_t = false;
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std::vector<MZNFZNSolverFlag> fzn_solver_flags;
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};
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struct VarStore {
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KeepAlive int_var = nullptr;
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KeepAlive bool_var = nullptr;
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bool used_int = false;
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bool used_bool = false;
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VarStore(KeepAlive iv, KeepAlive bv, bool ui, bool ub)
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: int_var(iv), bool_var(bv), used_int(ui), used_bool(ub){};
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};
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class FZNSolverInstance : public SolverInstanceBase, public TrailableSolverInstance {
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private:
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std::string _fzn_solver;
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std::unordered_map<int, VarStore> vdmap;
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std::unordered_set<int> uninitialised_vars;
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Model* _model;
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Env env;
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std::vector<unsigned int> stack;
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public:
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FZNSolverInstance(std::ostream& log, SolverInstanceBase::Options* opt);
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~FZNSolverInstance(void);
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Status next(void) override { return SolverInstance::ERROR; }
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Status solve(void) override;
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void printStatistics(bool fLegend = 0) override;
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void printFlatZincToFile(std::string filename);
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void printOutputToFile(std::string filename);
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void outputArray(Vec* arr);
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void outputDict(Variable* start);
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void processFlatZinc(void) override;
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void addFunction(FunctionI* fi) override;
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void addConstraint(const std::vector<BytecodeProc>& bs, Constraint* c) override;
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void addVariable(Variable* var, bool isOuput) override;
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Val getSolutionValue(Variable* var) override;
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// Able to return to the solver into a position where no search decisions
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// have been made. SolverInstance must allow addDefinition calls after
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// restart call.
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void restart() override{};
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// Returns the number of stored states
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size_t states() override { return stack.size(); }
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// Able to store the current solver state to the Trail.
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void pushState() override;
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// Able to restore the last solver state that was saved to the Trail.
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void popState() override;
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void resetSolver(void) override;
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protected:
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void createFunctionItems();
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Expression* getSolutionValue(Id* id);
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Expression* val_to_expr(Type ty, Val v);
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VarDecl* add_var_to_model(int ident, TypeInst* ti, bool view = false, bool isOutput = false);
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};
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class FZN_SolverFactory : public SolverFactory {
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protected:
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virtual SolverInstanceBase* doCreateSI(std::ostream& log, SolverInstanceBase::Options* opt);
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public:
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FZN_SolverFactory(void);
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virtual SolverInstanceBase::Options* createOptions(void);
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virtual std::string getDescription(SolverInstanceBase::Options* opt = NULL);
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virtual std::string getVersion(SolverInstanceBase::Options* opt = NULL);
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virtual std::string getId(void);
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virtual bool processOption(SolverInstanceBase::Options* opt, int& i,
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std::vector<std::string>& argv);
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virtual void printHelp(std::ostream& os);
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void setAcceptedFlags(SolverInstanceBase::Options* opt,
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const std::vector<MZNFZNSolverFlag>& flags);
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};
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} // namespace MiniZinc
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#endif
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