text: // Copyright (c) 2012-2016, Matt Godbolt
  //
  // All rights reserved.
  //
  // Redistribution and use in source and binary forms, with or without
  // modification, are permitted provided that the following conditions are met:
  //
  //     * Redistributions of source code must retain the above copyright notice,
  //       this list of conditions and the following disclaimer.
  //     * Redistributions in binary form must reproduce the above copyright
  //       notice, this list of conditions and the following disclaimer in the
  //       documentation and/or other materials provided with the distribution.
  //
  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  // ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
  // LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  // CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  // POSSIBILITY OF SUCH DAMAGE.
  
  define(function (require) {
      "use strict";
      var GoldenLayout = require('goldenlayout');
      var rison = require('rison');
      var $ = require('jquery');
      var editor = require('editor');
      var compiler = require('compiler');
      var lzstring = require('lzstring');
  
      function convertOldState(state) {
          var sc = state.compilers[0];
          if (!sc) return false;
          var content = [];
          var source;
          if (sc.sourcez) {
              source = lzstring.decompressFromBase64(sc.sourcez);
          } else {
              source = sc.source;
          }
          var options = {compileOnChange: true, colouriseAsm: state.filterAsm.colouriseAsm};
          var filters = _.clone(state.filterAsm);
          delete filters.colouriseAsm;
          content.push(editor.getComponentWith(1, source, options));
          content.push(compiler.getComponentWith(1, filters, sc.options, sc.compiler));
          return {version: 4, content: [{type: 'row', content: content}]};
      }
  
      function loadState(state) {
          if (!state || state.version === undefined) return false;
          switch (state.version) {
              case 1:
                  state.filterAsm = {};
                  state.version = 2;
              /* falls through */
              case 2:
                  state.compilers = [state];
                  state.version = 3;
              /* falls through */
              case 3:
                  state = convertOldState(state);
                  break;  // no fall through
              case 4:
                  state = GoldenLayout.unminifyConfig(state);
                  break;
              default:
                  return false;
          }
          return state;
      }
  
      function risonify(obj) {
          return rison.quote(rison.encode_object(obj));
      }
  
      function unrisonify(text) {
          return rison.decode_object(decodeURIComponent(text.replace(/\+/g, '%20')));
      }
  
      function deserialiseState(stateText) {
          var state;
          try {
              state = unrisonify(stateText);
              if (state && state.z) {
                  state = unrisonify(lzstring.decompressFromBase64(state.z));
              }
          } catch (ignored) {
          }
  
  
          if (!state) {
              try {
                  state = $.parseJSON(decodeURIComponent(stateText));
              } catch (ignored) {
              }
          }
          return loadState(state);
      }
  
      function serialiseState(stateText) {
          var ctx = GoldenLayout.minifyConfig({content: stateText.content});
          ctx.version = 4;
          var uncompressed = risonify(ctx);
          var compressed = risonify({z: lzstring.compressToBase64(uncompressed)});
          var MinimalSavings = 0.20;  // at least this ratio smaller
          if (compressed.length < uncompressed.length * (1.0 - MinimalSavings)) {
              return compressed;
          } else {
              return uncompressed;
          }
      }
  
      return {
          deserialiseState: deserialiseState,
          serialiseState: serialiseState
      };
  });