/**
   * @fileoverview Rule to flag labels that are the same as an identifier
   * @author Ian Christian Myers
   */
  
  "use strict";
  
  //------------------------------------------------------------------------------
  // Requirements
  //------------------------------------------------------------------------------
  
  var astUtils = require("../ast-utils");
  
  //------------------------------------------------------------------------------
  // Rule Definition
  //------------------------------------------------------------------------------
  
  module.exports = function(context) {
  
      //--------------------------------------------------------------------------
      // Helpers
      //--------------------------------------------------------------------------
  
      /**
       * Check if the identifier is present inside current scope
       * @param {object} scope current scope
       * @param {string} name To evaluate
       * @returns {boolean} True if its present
       * @private
       */
      function findIdentifier(scope, name) {
          return astUtils.getVariableByName(scope, name) !== null;
      }
  
      //--------------------------------------------------------------------------
      // Public API
      //--------------------------------------------------------------------------
  
      return {
  
          "LabeledStatement": function(node) {
  
              // Fetch the innermost scope.
              var scope = context.getScope();
  
              // Recursively find the identifier walking up the scope, starting
              // with the innermost scope.
              if (findIdentifier(scope, node.label.name)) {
                  context.report(node, "Found identifier with same name as label.");
              }
          }
  
      };
  
  };
  
  module.exports.schema = [];