elliptical/lib-node/phrases/choice.js

Interactive natural-language interfaces

'use strict';

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

var _lodash = require('lodash');

var _lodash2 = _interopRequireDefault(_lodash);

var _utils = require('../utils');

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

function* traverseChild(option, child, traverse) {
  const childOutputs = traverse(child, option);

  // slight performance optimization
  if (child.props.id == null) {
    yield* childOutputs;
  } else {
    for (let output of childOutputs) {
      const newResult = child.props.id != null ? { [child.props.id]: output.result } : output.result;

      const mods = { result: newResult };

      yield _lodash2.default.assign({}, output, mods);
    }
  }
}

function* childrenTraversals(option, children, traverse) {
  if (children && children.length > 0) {
    for (let child of children) {
      yield traverseChild(option, child, traverse);
    }
  }
}

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

  const traversals = childrenTraversals(option, children, traverse);
  yield* (0, _utils.limitIterator)(traversals, props.limit);
}

exports.default = { visit: visit };