text: /**
   * @fileoverview Tools for obtaining SourceCode objects.
   * @author Ian VanSchooten
   * @copyright 2016 Ian VanSchooten. All rights reserved.
   * See LICENSE in root directory for full license.
   */
  
  "use strict";
  
  //------------------------------------------------------------------------------
  // Requirements
  //------------------------------------------------------------------------------
  
  var lodash = require("lodash"),
      debug = require("debug"),
      CLIEngine = require("../cli-engine"),
      eslint = require("../eslint"),
      globUtil = require("./glob-util"),
      defaultOptions = require("../../conf/cli-options");
  
  debug = debug("eslint:source-code-util");
  
  //------------------------------------------------------------------------------
  // Helpers
  //------------------------------------------------------------------------------
  
  /**
   * Get the SourceCode object for a single file
   * @param   {string}     filename The fully resolved filename to get SourceCode from.
   * @param   {Object}     options  A CLIEngine options object.
   * @returns {Array}               Array of the SourceCode object representing the file
   *                                and fatal error message.
   */
  function getSourceCodeOfFile(filename, options) {
      debug("getting sourceCode of", filename);
      var opts = lodash.assign({}, options, { rules: {}});
      var cli = new CLIEngine(opts);
      var results = cli.executeOnFiles([filename]);
      if (results && results.results[0] && results.results[0].messages[0] && results.results[0].messages[0].fatal) {
          var msg = results.results[0].messages[0];
          throw new Error("(" + filename + ":" + msg.line + ":" + msg.column + ") " + msg.message);
      }
      var sourceCode = eslint.getSourceCode();
      return sourceCode;
  }
  
  //------------------------------------------------------------------------------
  // Public Interface
  //------------------------------------------------------------------------------
  
  
  /**
   * This callback is used to measure execution status in a progress bar
   * @callback progressCallback
   * @param {number} The total number of times the callback will be called.
   */
  
  /**
   * Gets the SourceCode of a single file, or set of files.
   * @param   {string[]|string}  patterns   A filename, directory name, or glob,
   *                                        or an array of them
   * @param   {Object}           [options]  A CLIEngine options object. If not provided,
   *                                        the default cli options will be used.
   * @param   {progressCallback} [cb]       Callback for reporting execution status
   * @returns {Object}                      The SourceCode of all processed files.
   */
  function getSourceCodeOfFiles(patterns, options, cb) {
      var sourceCodes = {},
          filenames,
          opts;
  
      if (typeof patterns === "string") {
          patterns = [patterns];
      }
  
      defaultOptions = lodash.assign({}, defaultOptions, {cwd: process.cwd()});
  
      if (typeof options === "undefined") {
          opts = defaultOptions;
      } else if (typeof options === "function") {
          cb = options;
          opts = defaultOptions;
      } else if (typeof options === "object") {
          opts = lodash.assign({}, defaultOptions, options);
      }
      debug("constructed options:", opts);
  
      patterns = globUtil.resolveFileGlobPatterns(patterns, opts.extensions);
      filenames = globUtil.listFilesToProcess(patterns, opts);
      if (filenames.length === 0) {
          debug("Did not find any files matching pattern(s): " + patterns);
      }
      filenames.forEach(function(filename) {
          var sourceCode = getSourceCodeOfFile(filename, opts);
          if (sourceCode) {
              debug("got sourceCode of", filename);
              sourceCodes[filename] = sourceCode;
          }
          if (cb) {
              cb(filenames.length); // eslint-disable-line callback-return
          }
      });
      return sourceCodes;
  }
  
  module.exports = {
      getSourceCodeOfFiles: getSourceCodeOfFiles
  };
  