dynare/matlab/ols/get_ast.m

52 lines
1.7 KiB
Matlab

function ast = get_ast(eqtags)
%function ast = get_ast(eqtags)
% return the Abstract Syntax Tree the JSON output of preprocessor for the
% given equation tags. Equations are ordered in eqtag order
%
% INPUTS
% eqtags [cellstr] names of equation tags for which to get info.
% If empty, get all equations
%
% OUTPUTS
% ast [cell array] JSON representation of the abstract syntax tree
%
% SPECIAL REQUIREMENTS
% none
% Copyright (C) 2019 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/>.
global M_
if ~isempty(eqtags) && ~(ischar(eqtags) || iscell(eqtags))
error('get_ast_jsonmodel: eqtags not passed correctly')
end
jsonfile = [M_.fname filesep() 'model' filesep() 'json' filesep() 'modfile-original.json'];
if exist(jsonfile, 'file') ~= 2
error(['Could not find ' jsonfile '! ' ...
'Please use the json=compute option ' ...
'(See the Dynare invocation section in the reference manual).']);
end
ast = loadjson(jsonfile);
ast = ast.abstract_syntax_tree;
if ~isempty(eqtags)
ast = getEquationsByTags(ast, 'name', eqtags);
end
end