65 lines
2.2 KiB
Matlab
65 lines
2.2 KiB
Matlab
function nds = evaluate(ds, eqtag)
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% Copyright (C) 2019 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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global M_
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% Get equation
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[LHS, RHS] = get_lhs_and_rhs(eqtag, M_, true);
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% Parse equation and return list of parameters, endogenous and exogenous variables.
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[pnames, enames, xnames] = get_variables_and_parameters_in_equation(LHS, RHS, M_);
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% Load parameter values.
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commands = sprintf('%s = %s;', pnames{1}, num2str(M_.params(strcmp(pnames{1},M_.param_names)), 16));
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for i=2:length(pnames)
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commands = sprintf('%s %s = %s;', commands, pnames{i}, ...
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num2str(M_.params(strcmp(pnames{i},M_.param_names)), 16));
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end
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eval(commands)
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% Substitute endogenous variable x with ds.x
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enames = unique(enames);
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for i=1:length(enames)
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if ismember(enames{i}, ds.name)
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RHS = regexprep(RHS, sprintf('\\<(%s)\\>', enames{i}), sprintf('ds.%s', enames{i}));
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else
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error('Endogenous variable %s is unknown in dseries objet.', enames{i})
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end
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end
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% Substitute exogenous variable x with ds.x, except if
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if ~isfield(M_, 'simulation_exo_names')
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M_.simulation_exo_names = M_.exo_names;
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end
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xnames = unique(xnames);
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for i=1:length(xnames)
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if ismember(xnames{i}, M_.simulation_exo_names)
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if ismember(xnames{i}, ds.name)
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RHS = regexprep(RHS, sprintf('\\<(%s)\\>', xnames{i}), sprintf('ds.%s', xnames{i}));
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else
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RHS = regexprep(RHS, sprintf('\\<(%s)\\>', xnames{i}), '0');
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warning('Exogenous variable %s is unknown in dseries objet. Assign zero value.', xnames{i})
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end
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else
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RHS = regexprep(RHS, sprintf('(\\ *)(+)(\\ *)%s', xnames{i}), '');
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end
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end
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nds = eval(RHS); |