@oat-sa/tao-item-runner-qti
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TAO QTI Item Runner modules
71 lines (57 loc) • 1.98 kB
JavaScript
/*
* This program 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; under version 2
* of the License (non-upgradable).
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Copyright (c) 2015-2019 (original work) Open Assessment Technlogies SA (under the project TAO-PRODUCT);
*
*/
/**
* The truncate operator processor.
* @see http://www.imsglobal.org/question/qtiv2p1/imsqti_infov2p1.html#element10701
* @author Bertrand Chevrier <bertrand@taotesting.com>
*/
import _ from 'lodash';
/**
* Process operands and returns the truncate.
* @type {OperatorProcessor}
* @exports taoQtiItem/scoring/processor/expressions/operators/truncate
*/
var truncateProcessor = {
constraints: {
minOperand: 1,
maxOperand: 1,
cardinality: ['single'],
baseType: ['integer', 'float']
},
operands: [],
process: function() {
var result = {
cardinality: 'single',
baseType: 'float'
};
var value;
//if at least one operand is null, then break and return null
if (_.some(this.operands, _.isNull) === true) {
return null;
}
value = this.preProcessor
.parseOperands(this.operands).value()[0];
if (_.isNaN(value)) {
return null;
}
result.value = _.isFinite(value) ? parseInt(value, 10) : value;
return result;
}
};
export default truncateProcessor;