cql-execution/lib/datatypes/logic.js

An execution framework for the Clinical Quality Language (CQL)

// Generated by CoffeeScript 1.9.3
(function() {
  var ThreeValuedLogic,
    slice = [].slice,
    indexOf = [].indexOf || function(item) { for (var i = 0, l = this.length; i < l; i++) { if (i in this && this[i] === item) return i; } return -1; };

  module.exports.ThreeValuedLogic = ThreeValuedLogic = (function() {
    function ThreeValuedLogic() {}

    ThreeValuedLogic.and = function() {
      var val;
      val = 1 <= arguments.length ? slice.call(arguments, 0) : [];
      if (indexOf.call(val, false) >= 0) {
        return false;
      } else if (indexOf.call(val, null) >= 0) {
        return null;
      } else {
        return true;
      }
    };

    ThreeValuedLogic.or = function() {
      var val;
      val = 1 <= arguments.length ? slice.call(arguments, 0) : [];
      if (indexOf.call(val, true) >= 0) {
        return true;
      } else if (indexOf.call(val, null) >= 0) {
        return null;
      } else {
        return false;
      }
    };

    ThreeValuedLogic.xor = function() {
      var val;
      val = 1 <= arguments.length ? slice.call(arguments, 0) : [];
      if (indexOf.call(val, null) >= 0) {
        return null;
      } else {
        return val.reduce(function(a, b) {
          return (!a ^ !b) === 1;
        });
      }
    };

    ThreeValuedLogic.not = function(val) {
      if (val != null) {
        return !val;
      } else {
        return null;
      }
    };

    return ThreeValuedLogic;

  })();

}).call(this);

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