// Copyright (c) Jupyter Development Team.
// Distributed under the terms of the Modified BSD License.

import CodeMirror from 'codemirror';

import 'codemirror/mode/meta';
import 'codemirror/mode/python/python';

/**
 * Define an IPython codemirror mode.
 *
 * It is a slightly altered Python Mode with a `?` operator.
 */
CodeMirror.defineMode(
  'ipython',
  (config: CodeMirror.EditorConfiguration, modeOptions?: any) => {
    let pythonConf: any = {};
    for (let prop in modeOptions) {
      if (modeOptions.hasOwnProperty(prop)) {
        pythonConf[prop] = modeOptions[prop];
      }
    }
    pythonConf.name = 'python';
    pythonConf.singleOperators = new RegExp('^[\\+\\-\\*/%&|@\\^~<>!\\?]');
    pythonConf.identifiers = new RegExp(
      '^[_A-Za-z\u00A1-\uFFFF][_A-Za-z0-9\u00A1-\uFFFF]*'
    );
    return CodeMirror.getMode(config, pythonConf);
  },
  'python'
);

CodeMirror.defineMIME('text/x-ipython', 'ipython');
CodeMirror.modeInfo.push({
  ext: [],
  mime: 'text/x-ipython',
  mode: 'ipython',
  name: 'ipython'
});