202 lines
7.0 KiB
C++
202 lines
7.0 KiB
C++
/*
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* Copyright (C) 2010-2015 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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AddVariable(symb_id); // Create the variable node to be used in write method
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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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vector<int> v;
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v.push_back(symb_id);
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def_table.push_back(make_pair(v, expr));
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}
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void
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SteadyStateModel::addMultipleDefinitions(const vector<int> &symb_ids, expr_t expr)
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{
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for (size_t i = 0; i < symb_ids.size(); i++)
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{
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AddVariable(symb_ids[i]); // Create the variable nodes to be used in write method
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assert(symbol_table.getType(symb_ids[i]) == eEndogenous
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|| symbol_table.getType(symb_ids[i]) == eModFileLocalVariable
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|| symbol_table.getType(symb_ids[i]) == eParameter);
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}
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def_table.push_back(make_pair(symb_ids, expr));
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}
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void
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SteadyStateModel::checkPass(bool ramsey_model, WarningConsolidation &warnings) const
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{
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if (def_table.size() == 0)
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return;
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vector<int> so_far_defined;
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for (size_t i = 0; i < def_table.size(); i++)
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{
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const vector<int> &symb_ids = def_table[i].first;
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// Check that symbols are not already defined
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for (size_t j = 0; j < symb_ids.size(); j++)
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if (find(so_far_defined.begin(), so_far_defined.end(), symb_ids[j])
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!= so_far_defined.end())
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warnings << "WARNING: in the 'steady_state_model' block, variable '" << symbol_table.getName(symb_ids[j]) << "' is declared twice" << endl;
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// Check that expression has no undefined symbol
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if (!ramsey_model)
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{
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set<int> used_symbols;
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const expr_t &expr = def_table[i].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<int>::const_iterator it = used_symbols.begin();
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it != used_symbols.end(); ++it)
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if (find(so_far_defined.begin(), so_far_defined.end(), *it)
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== so_far_defined.end())
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{
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cerr << "ERROR: in the 'steady_state_model' block, variable '" << symbol_table.getName(*it)
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<< "' is undefined in the declaration of variable '" << symbol_table.getName(symb_ids[0]) << "'" << endl;
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exit(EXIT_FAILURE);
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}
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}
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copy(symb_ids.begin(), symb_ids.end(), back_inserter(so_far_defined));
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}
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set<int> orig_endogs = symbol_table.getOrigEndogenous();
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for (set<int>::const_iterator it = orig_endogs.begin();
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it != orig_endogs.end(); ++it)
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{
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if (find(so_far_defined.begin(), so_far_defined.end(), *it)
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== so_far_defined.end())
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warnings << "WARNING: in the 'steady_state_model' block, variable '" << symbol_table.getName(*it) << "' is not assigned a value" << endl;
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}
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}
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void
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SteadyStateModel::writeSteadyStateFile(const string &basename, bool ramsey_model) const
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{
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if (def_table.size() == 0)
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return;
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string filename = basename + "_steadystate2.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_, params, info] = " << basename << "_steadystate2("
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<< "ys_, exo_, params)" << endl
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<< "% Steady state generated by Dynare preprocessor" << endl
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<< " info = 0;" << endl;
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for (size_t i = 0; i < def_table.size(); i++)
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{
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const vector<int> &symb_ids = def_table[i].first;
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output << " ";
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if (symb_ids.size() > 1)
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output << "[";
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for (size_t j = 0; j < symb_ids.size(); j++)
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{
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variable_node_map_t::const_iterator it = variable_node_map.find(make_pair(symb_ids[j], 0));
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assert(it != variable_node_map.end());
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dynamic_cast<ExprNode *>(it->second)->writeOutput(output, oSteadyStateFile);
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if (j < symb_ids.size()-1)
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output << ",";
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}
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if (symb_ids.size() > 1)
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output << "]";
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output << "=";
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def_table[i].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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void
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SteadyStateModel::writeSteadyStateFileC(const string &basename, bool ramsey_model) const
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{
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string filename = basename + "_steadystate.c";
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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 << "#include <math.h>" << endl;
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output << "void steadystate("
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<< "const double *exo_, const double *params, double *ys_, int *info)" << endl
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<< "// Steady state file generated by Dynare preprocessor" << endl
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<< "{" << endl
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<< " *info = 0;" << endl;
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if (def_table.size() == 0)
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{
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output << " return;" << endl
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<< "}" << endl;
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return;
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}
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for (size_t i = 0; i < def_table.size(); i++)
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{
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const vector<int> &symb_ids = def_table[i].first;
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output << " ";
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if (symb_ids.size() > 1)
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std::cout << "Error: in C, multiple returns are not permitted in steady_state_model" << std::endl;
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variable_node_map_t::const_iterator it = variable_node_map.find(make_pair(symb_ids[0], 0));
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assert(it != variable_node_map.end());
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if (it->second->get_type() == eModFileLocalVariable)
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output << "double ";
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dynamic_cast<ExprNode *>(it->second)->writeOutput(output, oCSteadyStateFile);
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output << "=";
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def_table[i].second->writeOutput(output, oCSteadyStateFile);
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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, oCSteadyStateFile);
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output << "}" << endl;
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}
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