function parseRow(state) {
    var params = [parseAssignment(state)];
    var len = 1;

    while (state.token === ',') {
      // eslint-disable-line no-unmodified-loop-condition
      getToken(state); // parse expression

      params[len] = parseAssignment(state);
      len++;
    }

    return new ArrayNode(params);
  }
Parse a single comma-separated row from a matrix, like 'a, b, c'
@return {ArrayNode} node