cql-execution/lib/elm/expression.js

An execution framework for the Clinical Quality Language (CQL)

// Generated by CoffeeScript 1.12.7
(function() {
  var Expression, UnimplementedExpression, build, typeIsArray,
    extend = function(child, parent) { for (var key in parent) { if (hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
    hasProp = {}.hasOwnProperty;

  build = require('./builder').build;

  typeIsArray = require('../util/util').typeIsArray;

  module.exports.Expression = Expression = (function() {
    function Expression(json) {
      var op;
      if (json.operand != null) {
        op = build(json.operand);
        if (typeIsArray(json.operand)) {
          this.args = op;
        } else {
          this.arg = op;
        }
      }
      if (json.localId != null) {
        this.localId = json.localId;
      }
    }

    Expression.prototype.execute = function(ctx) {
      var execValue;
      if (this.localId != null) {
        execValue = this.exec(ctx);
        ctx.rootContext().setLocalIdWithResult(this.localId, execValue);
        return execValue;
      } else {
        return this.exec(ctx);
      }
    };

    Expression.prototype.exec = function(ctx) {
      return this;
    };

    Expression.prototype.execArgs = function(ctx) {
      var arg, i, len, ref, results;
      switch (false) {
        case this.args == null:
          ref = this.args;
          results = [];
          for (i = 0, len = ref.length; i < len; i++) {
            arg = ref[i];
            results.push(arg.execute(ctx));
          }
          return results;
        case this.arg == null:
          return this.arg.execute(ctx);
        default:
          return null;
      }
    };

    return Expression;

  })();

  module.exports.UnimplementedExpression = UnimplementedExpression = (function(superClass) {
    extend(UnimplementedExpression, superClass);

    function UnimplementedExpression(json1) {
      this.json = json1;
      UnimplementedExpression.__super__.constructor.apply(this, arguments);
    }

    UnimplementedExpression.prototype.exec = function(ctx) {
      throw new Error("Unimplemented Expression: " + this.json.type);
    };

    return UnimplementedExpression;

  })(Expression);

}).call(this);

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