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// Ported from js-yaml v3.13.1:// https://github.com/nodeca/js-yaml/commit/665aadda42349dcae869f12040d9b10ef18d12da// Copyright 2011-2015 by Vitaly Puzrin. All rights reserved. MIT license.// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
import { Type } from "../type.ts";
const YAML_DATE_REGEXP = new RegExp(  "^([0-9][0-9][0-9][0-9])" + // [1] year    "-([0-9][0-9])" + // [2] month    "-([0-9][0-9])$", // [3] day);
const YAML_TIMESTAMP_REGEXP = new RegExp(  "^([0-9][0-9][0-9][0-9])" + // [1] year    "-([0-9][0-9]?)" + // [2] month    "-([0-9][0-9]?)" + // [3] day    "(?:[Tt]|[ \\t]+)" + // ...    "([0-9][0-9]?)" + // [4] hour    ":([0-9][0-9])" + // [5] minute    ":([0-9][0-9])" + // [6] second    "(?:\\.([0-9]*))?" + // [7] fraction    "(?:[ \\t]*(Z|([-+])([0-9][0-9]?)" + // [8] tz [9] tz_sign [10] tz_hour    "(?::([0-9][0-9]))?))?$", // [11] tz_minute);
function resolveYamlTimestamp(data: string): boolean {  if (data === null) return false;  if (YAML_DATE_REGEXP.exec(data) !== null) return true;  if (YAML_TIMESTAMP_REGEXP.exec(data) !== null) return true;  return false;}
function constructYamlTimestamp(data: string): Date {  let match = YAML_DATE_REGEXP.exec(data);  if (match === null) match = YAML_TIMESTAMP_REGEXP.exec(data);
  if (match === null) throw new Error("Date resolve error");
  // match: [1] year [2] month [3] day
  const year = +match[1];  const month = +match[2] - 1; // JS month starts with 0  const day = +match[3];
  if (!match[4]) {    // no hour    return new Date(Date.UTC(year, month, day));  }
  // match: [4] hour [5] minute [6] second [7] fraction
  const hour = +match[4];  const minute = +match[5];  const second = +match[6];
  let fraction = 0;  if (match[7]) {    let partFraction = match[7].slice(0, 3);    while (partFraction.length < 3) {      // milli-seconds      partFraction += "0";    }    fraction = +partFraction;  }
  // match: [8] tz [9] tz_sign [10] tz_hour [11] tz_minute
  let delta = null;  if (match[9]) {    const tzHour = +match[10];    const tzMinute = +(match[11] || 0);    delta = (tzHour * 60 + tzMinute) * 60000; // delta in milli-seconds    if (match[9] === "-") delta = -delta;  }
  const date = new Date(    Date.UTC(year, month, day, hour, minute, second, fraction),  );
  if (delta) date.setTime(date.getTime() - delta);
  return date;}
function representYamlTimestamp(date: Date): string {  return date.toISOString();}
export const timestamp = new Type("tag:yaml.org,2002:timestamp", {  construct: constructYamlTimestamp,  instanceOf: Date,  kind: "scalar",  represent: representYamlTimestamp,  resolve: resolveYamlTimestamp,});