2021-07-06 23:00:48 +02:00
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function str = print_equations(variable_name, withexpansion)
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2019-10-31 13:33:46 +01:00
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% Prints equations where the variable appears in.
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%
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% INPUTS
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% - variable_name [string] Name of the variable to be traced.
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% - withexpansion [logical] Prints expanded equation of the VAR_EXPECTATION or PAC_EXPECTATION term if true.
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%
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% OUTPUTS
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% None
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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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2021-06-09 17:33:48 +02:00
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% along with Dynare. If not, see <https://www.gnu.org/licenses/>.
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2019-10-31 13:33:46 +01:00
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global M_
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if nargin == 0
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error('Provide variable name as input argument.');
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elseif nargin == 1
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% Assign default value for VAR_EXPECTATION/PAC_EXPECTATION expression expansion.
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withexpansion = false;
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elseif nargin == 2
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if ~islogical(withexpansion)
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error('Second input argument must be Boolean.');
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end
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end
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% Check if corresponding JSON file exists.
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fname = [M_.fname filesep 'model' filesep 'json' filesep 'modfile-original.json'];
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if exist(fname, 'file') ~= 2
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error('Could not find %s! Please use the json option (See the Dynare invocation section in the reference manual).', fname);
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end
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% Check that the first input is a character array.
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if ~ischar(variable_name)
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error('First input argument must be a string.');
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end
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% Check that the variable is actually a variable in the model.
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if ~ismember(variable_name, [M_.exo_names; M_.endo_names])
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error('There is no variable named %s!', variable_name);
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end
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% Load the JSON file.
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2020-01-28 16:36:40 +01:00
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jsonfile = loadjson_(fname);
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2019-10-31 13:33:46 +01:00
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model = jsonfile.model;
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% Print the equations the variable appears in.
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for it = 1:length(M_.mapping.(variable_name).eqidx)
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rhs = model{M_.mapping.(variable_name).eqidx(it)}.rhs;
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if withexpansion
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if isfield(M_, 'pac') && contains(rhs, 'pac_expectation')
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% Get the index of the equation's PAC model.
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models = fieldnames(M_.pac);
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idx = find(~cellfun('isempty',cellfun(@(s)find(contains(rhs,s)),models,'uni',0)));
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% Get the expanded PAC_EXPECTATION term.
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[pac_expression, growthneutralitycorrection] = write_expectations(M_.pac.(models{idx}).tag_map(:,1), models{idx}, 'pac', true);
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expression = [sprintf('\n\t + %s', growthneutralitycorrection) TransformExpandedExpr(pac_expression)];
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rhs = strrep(rhs, ['+pac_expectation(model_name = ' models{idx} ')'], expression);
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elseif isfield(M_, 'var_expectation') && contains(rhs, 'var_expectation')
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% Get the index of the equation's VAR model.
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models = fieldnames(M_.var_expectation);
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idx = find(~cellfun('isempty',cellfun(@(s)find(contains(rhs,s)),models,'uni',0)));
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% Get the expanded VAR_EXPECTATION term.
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expression = write_expectations('fake', models{idx}, 'var', true);
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expression = TransformExpandedExpr(expression);
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rhs = strrep(rhs, ['+var_expectation(model_name = ' models{idx} ')'], expression);
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elseif ~isfield(M_, 'pac') && ~isfield(M_, 'var_expectation')
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warning('No VAR or PAC expectations found, continuing without expansion');
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withexpansion = false;
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end
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end
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2021-07-06 23:00:48 +02:00
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if nargout
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str = sprintf('%s = %s;\n', model{M_.mapping.(variable_name).eqidx(it)}.lhs, rhs);
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end
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2019-10-31 13:33:46 +01:00
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fprintf('%s = %s;\n', model{M_.mapping.(variable_name).eqidx(it)}.lhs, rhs);
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end
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function [transformed_expression] = TransformExpandedExpr(expression)
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transformed_expression = splitlines(expression);
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transformed_expression{1} = sprintf(' + %s', transformed_expression{1});
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2019-12-03 16:01:42 +01:00
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transformed_expression = sprintf('\n\t%s', transformed_expression{:});
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