"use strict";

var __rest = this && this.__rest || function (s, e) {
  var t = {};

  for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0) t[p] = s[p];

  if (s != null && typeof Object.getOwnPropertySymbols === "function") for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
    if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i])) t[p[i]] = s[p[i]];
  }
  return t;
};

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

const util_1 = require("../util.cjs");

const pull = offset => str => str.slice(offset);

const push = offset => {
  const space = ''.padStart(offset, ' ');
  return str => str + space;
};

function indent(pos) {
  let shift;

  const pad = start => {
    if (shift === undefined) {
      const offset = pos - start.length;
      shift = offset > 0 ? push(offset) : pull(-offset);
    }

    return shift(start);
  };

  const update = line => Object.assign(Object.assign({}, line), {
    tokens: Object.assign(Object.assign({}, line.tokens), {
      start: pad(line.tokens.start)
    })
  });

  return _a => {
    var {
      source
    } = _a,
        fields = __rest(_a, ["source"]);

    return util_1.rewireSource(Object.assign(Object.assign({}, fields), {
      source: source.map(update)
    }));
  };
}

exports.default = indent;
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