import { _mathmlGroupBuilders } from "./defineFunction";

/**
 * All registered environments.
 * `environments.js` exports this same dictionary again and makes it public.
 * `Parser.js` requires this dictionary via `environments.js`.
 */
export const _environments = {};

export default function defineEnvironment({ type, names, props, handler, mathmlBuilder }) {
  // Set default values of environments.
  const data = {
    type,
    numArgs: props.numArgs || 0,
    allowedInText: false,
    numOptionalArgs: 0,
    handler
  };
  for (let i = 0; i < names.length; ++i) {
    _environments[names[i]] = data;
  }
  if (mathmlBuilder) {
    _mathmlGroupBuilders[type] = mathmlBuilder;
  }
}