2023-10-25 10:14:12 +02:00
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function [lhs, rhs, json] = get_lhs_and_rhs(eqname, M_, original, json)
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% [lhs, rhs, json] = get_lhs_and_rhs(eqname, M_, original, json)
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2018-06-21 18:46:38 +02:00
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% Returns the left and right handsides of an equation.
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%
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% INPUTS
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2020-02-02 21:52:44 +01:00
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% - eqname [char] Name of the equation.
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% - M_ [struct] Structure describing the current model.
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2020-02-02 21:52:44 +01:00
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% - original [logical] fetch equation in modfile-original.json or modfile.json
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% - json [char] content of the JSON file
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2018-06-21 18:46:38 +02:00
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%
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% OUTPUTS
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2020-02-02 21:52:44 +01:00
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% - lhs [char] Left hand side of the equation.
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% - rhs [char] Right hand side of the equation.
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%
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2018-06-21 18:46:38 +02:00
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%
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% SPECIAL REQUIREMENTS
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% The user must have attached names to the equations using equation
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% tags. Each equation in the model block must be preceeded with a
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% tag (see the reference manual). For instance, we should have
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% something as:
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%
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% [name='Phillips curve']
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% pi = beta*pi(1) + slope*y + lam;
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2023-10-25 10:14:12 +02:00
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% Copyright © 2018-2023 Dynare Team
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2018-06-21 18:46:38 +02:00
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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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2018-06-21 18:46:38 +02:00
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2020-02-02 21:52:44 +01:00
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if nargin<3 || isempty(original)
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2018-06-21 18:46:38 +02:00
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original = false;
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end
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2020-02-02 21:52:44 +01:00
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% Load JSON file if nargin<4
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if nargin<4
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if original
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2023-10-25 10:14:12 +02:00
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json = loadjson_([M_.fname filesep() 'model' filesep() 'json' filesep() 'modfile-original.json']);
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2020-02-02 21:52:44 +01:00
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else
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json = loadjson_([M_.fname filesep() 'model' filesep() 'json' filesep() 'modfile.json']);
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2020-02-02 21:52:44 +01:00
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end
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2018-06-21 18:46:38 +02:00
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end
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2020-02-02 21:52:44 +01:00
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% Load model.
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jsonmod = json.model;
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2020-01-28 16:36:40 +01:00
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if isstruct(jsonmod)
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jsonmod = {jsonmod};
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end
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2020-02-02 21:52:44 +01:00
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% Load equation.
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2018-06-21 18:46:38 +02:00
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jsoneqn = getEquationsByTags(jsonmod, 'name', eqname);
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% Get the lhs and rhs members of the selected equation.
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lhs = jsoneqn{1}.lhs;
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rhs = jsoneqn{1}.rhs;
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