elliptical/lib-node/phrases/placeholder.js

Interactive natural-language interfaces

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _lodash = require('lodash');

var _lodash2 = _interopRequireDefault(_lodash);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

const defaultProps = {
  suppress: true,
  suppressEmpty: true
};

function* visit(option, _ref, traverse) {
  let props = _ref.props;
  let children = _ref.children;

  props = _lodash2.default.defaults({}, props, defaultProps);
  const child = children[0];

  if (props.suppress && option.text == null || props.suppressEmpty && option.text === '' || props.suppressWhen && props.suppressWhen(option.text)) {
    yield outputSelf(option, child, props);
  } else {
    yield* parseChild(option, child, props, traverse);
  }
}

function* parseChild(option, child, props, traverse) {
  for (let output of traverse(child, option)) {
    yield output;
  }
}

function outputSelf(option, child, props) {
  const word = {
    label: props.label,
    placeholder: true
  };

  const modification = {
    score: 0.01,
    result: undefined,
    text: null,
    words: option.words.concat(word)
  };

  return _lodash2.default.assign({}, option, modification);
}

exports.default = { visit: visit };