@fink/larix/lang/spread/init.js

A parser for generating fink's AST.

import { add_operator } from "@fink/prattler/expressions.js";
import { next_is, curr_loc, curr_value } from "@fink/prattler/parser.js";
import { prefix } from "../expressions.js";
import { single_expression } from "../block/expr.js";
export const spread = (token_type, expr_type) => ({ ...prefix(token_type),
  nud: lbp => ctx => {
    const {
      start
    } = curr_loc(ctx);
    const op = curr_value(ctx);

    let _do_result;

    ˆmatch_2: {
      const ˆvalue_1 = ctx;

      /* istanbul ignore else */
      if (next_is(ˆvalue_1, `,`)) {
        _do_result = [false, ctx];
        break ˆmatch_2;
      }

      {
        {
          const [expr, next_ctx] = single_expression(ctx, lbp);
          _do_result = [expr, next_ctx];
        }
        break ˆmatch_2;
      }
    }

    const [right, next_ctx] = _do_result;
    _do_result = undefined;
    const {
      end
    } = curr_loc(next_ctx);
    return [{
      type: expr_type,
      op,
      right,
      loc: {
        start,
        end
      }
    }, next_ctx];
  }
});
export const add_spread_operator = ctx => {
  let ˆpipe_result_3 = ctx;
  return ˆpipe_result_3 = add_operator(spread(`...`, `spread`))(ˆpipe_result_3);
};