71 lines
2.4 KiB
Matlab
71 lines
2.4 KiB
Matlab
function lhssub = getRhsToSubFromLhs(ds, rhs, regex, splits)
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%function lhssub = getRhsToSubFromLhs(ds, rhs, regex, splits)
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% Helper function that identifies variables on RHS that need to be
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% subtracted from LHS of OLS-style equation
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%
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% INPUTS
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% ds [dseries] data
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% rhs [string] RHS as a string
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% regex [string] regex expressing valid list of variables
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% splits [cell array] strings to split out of equation on RHS
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%
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% OUTPUTS
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% lhssub [dseries] data to subtract from LHS
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%
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% SPECIAL REQUIREMENTS
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% none
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% Copyright (C) 2017-2018 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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assert(isdseries(ds), 'The first argument must be a dseries');
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assert(ischar(rhs), 'The second argument must be a string');
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assert(ischar(regex), 'The third argument must be a string');
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assert(iscell(splits), 'The fourth argument must be a cell');
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lhssub = dseries();
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rhs_ = strsplit(rhs, splits);
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for j = 1:length(rhs_)
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rhsj = rhs_{j};
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while ~isempty(rhsj)
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minusstr = '';
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if strcmp(rhsj(1), '-') || strcmp(rhsj(1), '+')
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if length(rhsj) == 1
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break
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end
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if strcmp(rhsj(1), '-')
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minusstr = '-';
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end
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rhsj = rhsj(2:end);
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end
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str = getStrMoveRight(rhsj);
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if ~isempty(str)
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try
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lhssub = [lhssub eval(regexprep([minusstr str], regex, 'ds.$&'))];
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lhssub.rename_(lhssub{lhssub.vobs}.name{:}, [minusstr str]);
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catch
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if ~any(strcmp(M_.exo_names, str))
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error(['getRhsToSubFromLhs: problem evaluating ' minusstr str]);
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end
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end
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rhsj = rhsj(length(str)+1:end);
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end
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end
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end
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end |