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function [lhs, rhs] = get_lhs_and_rhs(eqname, DynareModel, original)
% Returns the left and right handsides of an equation.
%
% INPUTS
% - lhs [string] Left hand side of the equation.
% - rhs [string] Right hand side of the equation.
% - DynareModel [struct] Structure describing the current model (M_).
%
% OUTPUTS
% - eqname [string] Name of the equation.
%
% SPECIAL REQUIREMENTS
% The user must have attached names to the equations using equation
% tags. Each equation in the model block must be preceeded with a
% tag (see the reference manual). For instance, we should have
% something as:
%
% [name='Phillips curve']
% pi = beta*pi(1) + slope*y + lam;
% Copyright (C) 2018 Dynare Team
%
% This file is part of Dynare.
%
% Dynare is free software: you can redistribute it and/or modify
% it under the terms of the GNU General Public License as published by
% the Free Software Foundation, either version 3 of the License, or
% (at your option) any later version.
%
% Dynare is distributed in the hope that it will be useful,
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
% GNU General Public License for more details.
%
% You should have received a copy of the GNU General Public License
% along with Dynare. If not, see <http://www.gnu.org/licenses/>.
if nargin<3
original = false;
end
% Get the equation from the JSON output.
if original
jsonfil = loadjson([DynareModel.fname filesep() 'model' filesep() 'json' filesep() 'modfile-original.json']);
else
jsonfil = loadjson([DynareModel.fname filesep() 'model' filesep() 'json' filesep() 'modfile.json']);
end
jsonmod = jsonfil.model;
jsoneqn = getEquationsByTags(jsonmod, 'name', eqname);
% Get the lhs and rhs members of the selected equation.
lhs = jsoneqn{1}.lhs;
rhs = jsoneqn{1}.rhs;
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