atom-nuclide/pkg/nuclide-hack/lib/TypeHintProvider.js

A unified developer experience for web and mobile development, built as a suite of features on top of Atom to provide hackability and the support of an active community.

var _createDecoratedClass = (function () { function defineProperties(target, descriptors, initializers) { for (var i = 0; i < descriptors.length; i++) { var descriptor = descriptors[i]; var decorators = descriptor.decorators; var key = descriptor.key; delete descriptor.key; delete descriptor.decorators; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor || descriptor.initializer) descriptor.writable = true; if (decorators) { for (var f = 0; f < decorators.length; f++) { var decorator = decorators[f]; if (typeof decorator === 'function') { descriptor = decorator(target, key, descriptor) || descriptor; } else { throw new TypeError('The decorator for method ' + descriptor.key + ' is of the invalid type ' + typeof decorator); } } if (descriptor.initializer !== undefined) { initializers[key] = descriptor; continue; } } Object.defineProperty(target, key, descriptor); } } return function (Constructor, protoProps, staticProps, protoInitializers, staticInitializers) { if (protoProps) defineProperties(Constructor.prototype, protoProps, protoInitializers); if (staticProps) defineProperties(Constructor, staticProps, staticInitializers); return Constructor; }; })();

/*
 * Copyright (c) 2015-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the license found in the LICENSE file in
 * the root directory of this source tree.
 */

var typeHintFromEditor = _asyncToGenerator(function* (editor, position) {
  var filePath = editor.getPath();
  var hackLanguage = yield (0, (_HackLanguage2 || _HackLanguage()).getHackLanguageForUri)(filePath);
  if (!hackLanguage || !filePath) {
    return null;
  }

  var match = (0, (_utils2 || _utils()).getIdentifierAndRange)(editor, position);
  if (match == null) {
    return null;
  }

  var contents = editor.getText();

  var type = yield hackLanguage.getType(filePath, contents, match.id, position.row + 1, position.column + 1);
  if (!type || type === '_') {
    return null;
  } else {
    return {
      hint: type,
      range: match.range
    };
  }
});

function _asyncToGenerator(fn) { return function () { var gen = fn.apply(this, arguments); return new Promise(function (resolve, reject) { var callNext = step.bind(null, 'next'); var callThrow = step.bind(null, 'throw'); function step(key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { Promise.resolve(value).then(callNext, callThrow); } } callNext(); }); }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }

var _HackLanguage2;

function _HackLanguage() {
  return _HackLanguage2 = require('./HackLanguage');
}

var _utils2;

function _utils() {
  return _utils2 = require('./utils');
}

var _nuclideAnalytics2;

function _nuclideAnalytics() {
  return _nuclideAnalytics2 = require('../../nuclide-analytics');
}

module.exports = (function () {
  function TypeHintProvider() {
    _classCallCheck(this, TypeHintProvider);
  }

  _createDecoratedClass(TypeHintProvider, [{
    key: 'typeHint',
    decorators: [(0, (_nuclideAnalytics2 || _nuclideAnalytics()).trackTiming)('hack.typeHint')],
    value: function typeHint(editor, position) {
      return typeHintFromEditor(editor, position);
    }
  }]);

  return TypeHintProvider;
})();