77 lines
2.4 KiB
Matlab
77 lines
2.4 KiB
Matlab
function [ast] = getEquationsByTags(ast, tagname, tagvalue)
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%function [ast] = getEquationsByTags(ast, tagname, tagvalue)
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% Return the ast structure with the matching tags
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%
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% INPUTS
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% ast [cell array] JSON representation of model block
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% tagname [string] The name of the tag whos values are to
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% be selected
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% tagvalue [string] The values to be selected for the
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% provided tagname
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%
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% OUTPUTS
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% ast [cell array] JSON representation of model block,
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% with equations removed that don't match
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% eqtags
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%
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% SPECIAL REQUIREMENTS
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% none
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% Copyright (C) 2017-2021 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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if nargin ~= 3
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error('Incorrect number of arguments passed to function')
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end
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if isempty(ast) || ~iscell(ast)
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error('the first argument must be a cell array of structs');
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end
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if ~ischar(tagname)
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error('Tag name must be a string');
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end
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if ~ischar(tagvalue) && ~iscell(tagvalue)
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error('Tag value must be a string or a cell string array');
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end
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if ischar(tagvalue)
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tagvalue = {tagvalue};
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end
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idx2keep = [];
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for i = 1:length(tagvalue)
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found = false;
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for j=1:length(ast)
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assert(isstruct(ast{j}), 'Every entry in the ast must be a struct');
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if isfield(ast{j}, 'tags') && ...
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isfield(ast{j}.tags, tagname) && ...
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strcmp(ast{j}.tags.(tagname), tagvalue{i})
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idx2keep = [idx2keep; j];
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found = true;
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break
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end
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end
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if found == false
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warning(['getEquationsByTags: no equation tag found by the name of ''' tagvalue{i} ''''])
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end
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end
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assert(~isempty(idx2keep), 'getEquationsByTags: no equations selected');
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ast = ast(unique(idx2keep, 'stable'));
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end
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