/**
   * @fileoverview Rule to flag use of an empty block statement
   * @author Nicholas C. Zakas
   * @copyright Nicholas C. Zakas. All rights reserved.
   * @copyright 2015 Dieter Oberkofler. All rights reserved.
   */
  "use strict";
  
  //------------------------------------------------------------------------------
  // Rule Definition
  //------------------------------------------------------------------------------
  
  module.exports = function(context) {
  
      return {
  
          "BlockStatement": function(node) {
              var parent = node.parent,
                  parentType = parent.type;
  
              // if the body is not empty, we can just return immediately
              if (node.body.length !== 0) {
                  return;
              }
  
              // a function is generally allowed to be empty
              if (parentType === "FunctionDeclaration" || parentType === "FunctionExpression" || parentType === "ArrowFunctionExpression") {
                  return;
              }
  
              // any other block is only allowed to be empty, if it contains a comment
              if (context.getComments(node).trailing.length > 0) {
                  return;
              }
  
              context.report(node, "Empty block statement.");
          },
  
          "SwitchStatement": function(node) {
  
              if (typeof node.cases === "undefined" || node.cases.length === 0) {
                  context.report(node, "Empty switch statement.");
              }
          }
      };
  
  };
  
  module.exports.schema = [];