/**
   * @fileoverview Rule to flag comparison where left part is the same as the right
   * part.
   * @author Ilya Volodin
   */
  
  "use strict";
  
  //------------------------------------------------------------------------------
  // Rule Definition
  //------------------------------------------------------------------------------
  
  module.exports = function(context) {
  
      return {
  
          "BinaryExpression": function(node) {
              var operators = ["===", "==", "!==", "!=", ">", "<", ">=", "<="];
              if (operators.indexOf(node.operator) > -1 &&
                  (node.left.type === "Identifier" && node.right.type === "Identifier" && node.left.name === node.right.name ||
                  node.left.type === "Literal" && node.right.type === "Literal" && node.left.value === node.right.value)) {
                  context.report(node, "Comparing to itself is potentially pointless.");
              }
          }
      };
  
  };
  
  module.exports.schema = [];