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node_modules/eslint/lib/rules/no-unexpected-multiline.js 1.76 KB
c39994410   Ryan Glover   wip converting to...
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  /**
   * @fileoverview Rule to spot scenarios where a newline looks like it is ending a statement, but is not.
   * @author Glen Mailer
   * @copyright 2015 Glen Mailer
   */
  "use strict";
  
  //------------------------------------------------------------------------------
  // Rule Definition
  //------------------------------------------------------------------------------
  module.exports = function(context) {
  
      var FUNCTION_MESSAGE = "Unexpected newline between function and ( of function call.";
      var PROPERTY_MESSAGE = "Unexpected newline between object and [ of property access.";
  
      /**
       * Check to see if the bracket prior to the node is continuing the previous
       * line's expression
       * @param {ASTNode} node The node to check.
       * @param {string} msg The error message to use.
       * @returns {void}
       * @private
       */
      function checkForBreakBefore(node, msg) {
          var tokens = context.getTokensBefore(node, 2);
          var paren = tokens[1];
          var before = tokens[0];
          if (paren.loc.start.line !== before.loc.end.line) {
              context.report(node, paren.loc.start, msg, { char: paren.value });
          }
      }
  
      //--------------------------------------------------------------------------
      // Public API
      //--------------------------------------------------------------------------
  
      return {
  
          "MemberExpression": function(node) {
              if (!node.computed) {
                  return;
              }
  
              checkForBreakBefore(node.property, PROPERTY_MESSAGE);
          },
  
          "CallExpression": function(node) {
              if (node.arguments.length === 0) {
                  return;
              }
  
              checkForBreakBefore(node.arguments[0], FUNCTION_MESSAGE);
          }
      };
  
  };
  
  module.exports.schema = [];