114 lines
3.9 KiB
C++
114 lines
3.9 KiB
C++
/*
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* Copyright (C) 2010 Dynare Team
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*
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* This file is part of Dynare.
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*
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* Dynare is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Dynare is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Dynare. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <cassert>
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#include <algorithm>
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#include "SteadyStateModel.hh"
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SteadyStateModel::SteadyStateModel(SymbolTable &symbol_table_arg, NumericalConstants &num_constants, ExternalFunctionsTable &external_functions_table_arg, const StaticModel &static_model_arg) :
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DataTree(symbol_table_arg, num_constants, external_functions_table), static_model(static_model_arg)
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{
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}
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void
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SteadyStateModel::addDefinition(int symb_id, expr_t expr)
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{
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assert(symbol_table.getType(symb_id) == eEndogenous
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|| symbol_table.getType(symb_id) == eModFileLocalVariable
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|| symbol_table.getType(symb_id) == eParameter);
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// Add the variable
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recursive_order.push_back(symb_id);
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def_table[symb_id] = AddEqual(AddVariable(symb_id), expr);
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}
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void
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SteadyStateModel::checkPass(bool ramsey_policy) const
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{
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for (vector<int>::const_iterator it = recursive_order.begin();
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it != recursive_order.end(); ++it)
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{
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// Check that symbol is not already defined
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if (find(recursive_order.begin(), it, *it) != it)
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{
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cerr << "ERROR: in the 'steady_state' block, variable '" << symbol_table.getName(*it) << "' is declared twice" << endl;
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exit(EXIT_FAILURE);
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}
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// Check that expression has no undefined symbol
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if (!ramsey_policy)
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{
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set<pair<int, int> > used_symbols;
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expr_t expr = def_table.find(*it)->second;
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expr->collectVariables(eEndogenous, used_symbols);
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expr->collectVariables(eModFileLocalVariable, used_symbols);
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for(set<pair<int, int> >::const_iterator it2 = used_symbols.begin();
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it2 != used_symbols.end(); ++it2)
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if (find(recursive_order.begin(), it, it2->first) == it
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&& *it != it2->first)
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{
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cerr << "ERROR: in the 'steady_state' block, variable '" << symbol_table.getName(it2->first) << "' is undefined in the declaration of variable '" << symbol_table.getName(*it) << "'" << endl;
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exit(EXIT_FAILURE);
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}
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}
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}
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}
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void
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SteadyStateModel::writeSteadyStateFile(const string &basename, bool ramsey_policy) const
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{
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if (recursive_order.size() == 0)
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return;
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string filename = basename + "_steadystate.m";
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ofstream output;
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output.open(filename.c_str(), ios::out | ios::binary);
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if (!output.is_open())
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{
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cerr << "ERROR: Can't open file " << filename << " for writing" << endl;
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exit(EXIT_FAILURE);
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}
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output << "function [ys_, check_] = " << basename << "_steadystate(";
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if (ramsey_policy)
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output << "ys_";
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else
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output << "ys_orig_";
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output << ", exo_)" << endl
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<< "% Steady state generated by Dynare preprocessor" << endl;
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if (!ramsey_policy)
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output << " ys_=zeros(" << symbol_table.orig_endo_nbr() << ",1);" << endl;
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output << " global M_" << endl;
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for(size_t i = 0; i < recursive_order.size(); i++)
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{
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output << " ";
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map<int, expr_t>::const_iterator it = def_table.find(recursive_order[i]);
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it->second->writeOutput(output, oSteadyStateFile);
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output << ";" << endl;
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}
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output << " % Auxiliary equations" << endl;
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static_model.writeAuxVarInitval(output, oSteadyStateFile);
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output << " check_=0;" << endl
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<< "end" << endl;
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}
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