/**
   * @fileoverview Rule for disallowing require() outside of the top-level module context
   * @author Jamund Ferguson
   * @copyright 2015 Jamund Ferguson. All rights reserved.
   */
  
  "use strict";
  
  var ACCEPTABLE_PARENTS = [
      "AssignmentExpression",
      "VariableDeclarator",
      "MemberExpression",
      "ExpressionStatement",
      "CallExpression",
      "ConditionalExpression",
      "Program",
      "VariableDeclaration"
  ];
  
  module.exports = function(context) {
      return {
          "CallExpression": function(node) {
              if (node.callee.name === "require") {
                  var isGoodRequire = context.getAncestors().every(function(parent) {
                      return ACCEPTABLE_PARENTS.indexOf(parent.type) > -1;
                  });
                  if (!isGoodRequire) {
                      context.report(node, "Unexpected require().");
                  }
              }
          }
      };
  };
  
  module.exports.schema = [];