/**
   * @fileoverview Disallow string concatenation when using __dirname and __filename
   * @author Nicholas C. Zakas
   */
  "use strict";
  
  //------------------------------------------------------------------------------
  // Rule Definition
  //------------------------------------------------------------------------------
  
  module.exports = function(context) {
  
      var MATCHER = /^__(?:dir|file)name$/;
  
      //--------------------------------------------------------------------------
      // Public
      //--------------------------------------------------------------------------
  
      return {
  
          "BinaryExpression": function(node) {
  
              var left = node.left,
                  right = node.right;
  
              if (node.operator === "+" &&
                      ((left.type === "Identifier" && MATCHER.test(left.name)) ||
                      (right.type === "Identifier" && MATCHER.test(right.name)))
              ) {
  
                  context.report(node, "Use path.join() or path.resolve() instead of + to create paths.");
              }
          }
  
      };
  
  };
  
  module.exports.schema = [];