diff --git a/DynareBison.yy b/DynareBison.yy
index 6d056c7c5ecc4aebc3d1dca81a416726b9b536bc..1a25176e9b53a5458e1a90b238cf4e43c7241a98 100644
--- a/DynareBison.yy
+++ b/DynareBison.yy
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2003-2010 Dynare Team
+ * Copyright (C) 2003-2011 Dynare Team
*
* This file is part of Dynare.
*
@@ -1651,6 +1651,8 @@ steady_state_equation_list : steady_state_equation_list steady_state_equation
steady_state_equation : symbol EQUAL expression ';'
{ driver.add_steady_state_model_equal($1, $3); }
+ | '[' symbol_list ']' EQUAL expression ';'
+ { driver.add_steady_state_model_equal_multiple($5); }
;
o_dr_algo : DR_ALGO EQUAL INT_NUMBER {
diff --git a/ExprNode.cc b/ExprNode.cc
index ec907ab99f7b55bff9139374c017c2a1377d4734..21d75bcdf571a914eaf473f7b1c9e62ad4894718 100644
--- a/ExprNode.cc
+++ b/ExprNode.cc
@@ -4075,7 +4075,7 @@ ExternalFunctionNode::writeOutput(ostream &output, ExprNodeOutputType output_typ
const temporary_terms_t &temporary_terms,
deriv_node_temp_terms_t &tef_terms) const
{
- if (output_type == oMatlabOutsideModel)
+ if (output_type == oMatlabOutsideModel || output_type == oSteadyStateFile)
{
output << datatree.symbol_table.getName(symb_id) << "(";
writeExternalFunctionArguments(output, output_type, temporary_terms, tef_terms);
diff --git a/ParsingDriver.cc b/ParsingDriver.cc
index 99a7e33d140bdf875ff5b1918981938106f7e7d7..51e9db10b281c1fcfd4ff3948cff5e351b587614 100644
--- a/ParsingDriver.cc
+++ b/ParsingDriver.cc
@@ -1899,3 +1899,32 @@ ParsingDriver::add_steady_state_model_equal(string *varname, expr_t expr)
delete varname;
}
+
+void
+ParsingDriver::add_steady_state_model_equal_multiple(expr_t expr)
+{
+ const vector<string> &symbs = symbol_list.get_symbols();
+ vector<int> ids;
+
+ for (size_t i = 0; i < symbs.size(); i++)
+ {
+ int id;
+ try
+ {
+ id = mod_file->symbol_table.getID(symbs[i]);
+ }
+ catch (SymbolTable::UnknownSymbolNameException &e)
+ {
+ // Unknown symbol, declare it as a ModFileLocalVariable
+ id = mod_file->symbol_table.addSymbol(symbs[i], eModFileLocalVariable);
+ }
+ SymbolType type = mod_file->symbol_table.getType(id);
+ if (type != eEndogenous && type != eModFileLocalVariable && type != eParameter)
+ error(symbs[i] + " has incorrect type");
+ ids.push_back(id);
+ }
+
+ mod_file->steady_state_model.addMultipleDefinitions(ids, expr);
+
+ symbol_list.clear();
+}
diff --git a/ParsingDriver.hh b/ParsingDriver.hh
index f9b881a604c3bf4a37825ea304b950608079b0e8..50ea88f52e2ad5106a3f6e71095b0d3e0561565a 100644
--- a/ParsingDriver.hh
+++ b/ParsingDriver.hh
@@ -496,6 +496,8 @@ public:
void begin_steady_state_model();
//! Add an assignment equation in steady_state_model block
void add_steady_state_model_equal(string *varname, expr_t expr);
+ //! Add a multiple assignment equation in steady_state_model block
+ void add_steady_state_model_equal_multiple(expr_t expr);
//! Switches datatree
void begin_trend();
//! Declares a trend variable with its growth factor
diff --git a/SteadyStateModel.cc b/SteadyStateModel.cc
index 4a916fb933a9a71369c1946da62c2304d208d13c..6caa166ed42e39459623e5010b83090924980556 100644
--- a/SteadyStateModel.cc
+++ b/SteadyStateModel.cc
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2010 Dynare Team
+ * Copyright (C) 2010-2011 Dynare Team
*
* This file is part of Dynare.
*
@@ -30,44 +30,70 @@ SteadyStateModel::SteadyStateModel(SymbolTable &symbol_table_arg, NumericalConst
void
SteadyStateModel::addDefinition(int symb_id, expr_t expr)
{
+ AddVariable(symb_id); // Create the variable node to be used in write method
+
assert(symbol_table.getType(symb_id) == eEndogenous
|| symbol_table.getType(symb_id) == eModFileLocalVariable
|| symbol_table.getType(symb_id) == eParameter);
// Add the variable
- recursive_order.push_back(symb_id);
- def_table[symb_id] = AddEqual(AddVariable(symb_id), expr);
+ vector<int> v;
+ v.push_back(symb_id);
+ recursive_order.push_back(v);
+ def_table[v] = expr;
+}
+
+void
+SteadyStateModel::addMultipleDefinitions(const vector<int> &symb_ids, expr_t expr)
+{
+ for (size_t i = 0; i < symb_ids.size(); i++)
+ {
+ AddVariable(symb_ids[i]); // Create the variable nodes to be used in write method
+ assert(symbol_table.getType(symb_ids[i]) == eEndogenous
+ || symbol_table.getType(symb_ids[i]) == eModFileLocalVariable
+ || symbol_table.getType(symb_ids[i]) == eParameter);
+ }
+ recursive_order.push_back(symb_ids);
+ def_table[symb_ids] = expr;
}
void
SteadyStateModel::checkPass(bool ramsey_policy) const
{
- for (vector<int>::const_iterator it = recursive_order.begin();
- it != recursive_order.end(); ++it)
+ vector<int> so_far_defined;
+
+ for (size_t i = 0; i < recursive_order.size(); i++)
{
- // Check that symbol is not already defined
- if (find(recursive_order.begin(), it, *it) != it)
- {
- cerr << "ERROR: in the 'steady_state' block, variable '" << symbol_table.getName(*it) << "' is declared twice" << endl;
- exit(EXIT_FAILURE);
- }
+ const vector<int> &symb_ids = recursive_order[i];
+
+ // Check that symbols are not already defined
+ for (size_t j = 0; j < symb_ids.size(); j++)
+ if (find(so_far_defined.begin(), so_far_defined.end(), symb_ids[j])
+ != so_far_defined.end())
+ {
+ cerr << "ERROR: in the 'steady_state' block, variable '" << symbol_table.getName(symb_ids[j]) << "' is declared twice" << endl;
+ exit(EXIT_FAILURE);
+ }
// Check that expression has no undefined symbol
if (!ramsey_policy)
{
set<pair<int, int> > used_symbols;
- expr_t expr = def_table.find(*it)->second;
+ expr_t expr = def_table.find(symb_ids)->second;
expr->collectVariables(eEndogenous, used_symbols);
expr->collectVariables(eModFileLocalVariable, used_symbols);
- for(set<pair<int, int> >::const_iterator it2 = used_symbols.begin();
- it2 != used_symbols.end(); ++it2)
- if (find(recursive_order.begin(), it, it2->first) == it
- && *it != it2->first)
+ for(set<pair<int, int> >::const_iterator it = used_symbols.begin();
+ it != used_symbols.end(); ++it)
+ if (find(so_far_defined.begin(), so_far_defined.end(), it->first)
+ == so_far_defined.end())
{
- 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;
+ cerr << "ERROR: in the 'steady_state' block, variable '" << symbol_table.getName(it->first)
+ << "' is undefined in the declaration of variable '" << symbol_table.getName(symb_ids[0]) << "'" << endl;
exit(EXIT_FAILURE);
}
}
+
+ copy(symb_ids.begin(), symb_ids.end(), back_inserter(so_far_defined));
}
}
@@ -98,11 +124,25 @@ SteadyStateModel::writeSteadyStateFile(const string &basename, bool ramsey_polic
output << " ys_=zeros(" << symbol_table.orig_endo_nbr() << ",1);" << endl;
output << " global M_" << endl;
- for(size_t i = 0; i < recursive_order.size(); i++)
+ for (size_t i = 0; i < recursive_order.size(); i++)
{
+ const vector<int> &symb_ids = recursive_order[i];
output << " ";
- map<int, expr_t>::const_iterator it = def_table.find(recursive_order[i]);
- it->second->writeOutput(output, oSteadyStateFile);
+ if (symb_ids.size() > 1)
+ output << "[";
+ for (size_t j = 0; j < symb_ids.size(); j++)
+ {
+ variable_node_map_t::const_iterator it = variable_node_map.find(make_pair(symb_ids[j], 0));
+ assert(it != variable_node_map.end());
+ dynamic_cast<ExprNode *>(it->second)->writeOutput(output, oSteadyStateFile);
+ if (j < symb_ids.size()-1)
+ output << ",";
+ }
+ if (symb_ids.size() > 1)
+ output << "]";
+
+ output << "=";
+ def_table.find(symb_ids)->second->writeOutput(output, oSteadyStateFile);
output << ";" << endl;
}
output << " % Auxiliary equations" << endl;
diff --git a/SteadyStateModel.hh b/SteadyStateModel.hh
index d5677565fef33e9c0ad8a102771542ee78e48b05..cbb206afa32d91f375e5457536f9a5d1c5fb07d9 100644
--- a/SteadyStateModel.hh
+++ b/SteadyStateModel.hh
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2010 Dynare Team
+ * Copyright (C) 2010-2011 Dynare Team
*
* This file is part of Dynare.
*
@@ -26,9 +26,9 @@
class SteadyStateModel : public DataTree
{
private:
- //! Associates a symbol ID to an expression of the form "var = expr"
- map<int, expr_t> def_table;
- vector<int> recursive_order;
+ //! Associates a set of symbol IDs (the variable(s) assigned in a given statement) to an expression (their assigned value)
+ map<vector<int>, expr_t> def_table;
+ vector<vector<int> > recursive_order;
//! Reference to static model (for writing auxiliary equations)
const StaticModel &static_model;
@@ -37,6 +37,8 @@ public:
SteadyStateModel(SymbolTable &symbol_table_arg, NumericalConstants &num_constants, ExternalFunctionsTable &external_functions_table_arg, const StaticModel &static_model_arg);
//! Add an expression of the form "var = expr;"
void addDefinition(int symb_id, expr_t expr);
+ //! Add an expression of the form "[ var1, var2, ... ] = expr;"
+ void addMultipleDefinitions(const vector<int> &symb_ids, expr_t expr);
//! Checks that definitions are in a recursive order, and that no variable is declared twice
/*!
\param[in] ramsey_policy Is there a ramsey_policy statement in the MOD file? If yes, then disable the check on the recursivity of the declarations
diff --git a/SymbolList.hh b/SymbolList.hh
index e1ec9fac8b36e63936ebe4adab898e6427aed814..dafa965bfcb844f61ffa9e5648ab2e23a178d4d1 100644
--- a/SymbolList.hh
+++ b/SymbolList.hh
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2003-2008 Dynare Team
+ * Copyright (C) 2003-2011 Dynare Team
*
* This file is part of Dynare.
*
@@ -41,6 +41,8 @@ public:
void writeOutput(const string &varname, ostream &output) const;
//! Clears all content
void clear();
+ //! Get a copy of the string vector
+ vector<string> get_symbols() const { return symbols; };
};
#endif