simplify date operators by making SDate.GetHashCode() return unique ordered values, expand unit tests (#307)
This commit is contained in:
Jesse Plamondon-Willard
parent
7e815911e2
commit
0a8c07cc07
|
|
@ -1,4 +1,5 @@
|
||||||
using System;
|
using System;
|
||||||
|
using System.Collections.Generic;
|
||||||
using System.Diagnostics.CodeAnalysis;
|
using System.Diagnostics.CodeAnalysis;
|
||||||
using System.Linq;
|
using System.Linq;
|
||||||
using System.Text.RegularExpressions;
|
using System.Text.RegularExpressions;
|
||||||
|
|
@ -15,10 +16,35 @@ namespace StardewModdingAPI.Tests
|
||||||
** Properties
|
** Properties
|
||||||
*********/
|
*********/
|
||||||
/// <summary>All valid seasons.</summary>
|
/// <summary>All valid seasons.</summary>
|
||||||
private static string[] ValidSeasons = { "spring", "summer", "fall", "winter" };
|
private static readonly string[] ValidSeasons = { "spring", "summer", "fall", "winter" };
|
||||||
|
|
||||||
/// <summary>All valid days of a month.</summary>
|
/// <summary>All valid days of a month.</summary>
|
||||||
private static int[] ValidDays = Enumerable.Range(1, 28).ToArray();
|
private static readonly int[] ValidDays = Enumerable.Range(1, 28).ToArray();
|
||||||
|
|
||||||
|
/// <summary>Sample relative dates for test cases.</summary>
|
||||||
|
private static class Dates
|
||||||
|
{
|
||||||
|
/// <summary>The base date to which other dates are relative.</summary>
|
||||||
|
public const string Now = "02 summer Y2";
|
||||||
|
|
||||||
|
/// <summary>The day before <see cref="Now"/>.</summary>
|
||||||
|
public const string PrevDay = "01 summer Y2";
|
||||||
|
|
||||||
|
/// <summary>The month before <see cref="Now"/>.</summary>
|
||||||
|
public const string PrevMonth = "02 spring Y2";
|
||||||
|
|
||||||
|
/// <summary>The year before <see cref="Now"/>.</summary>
|
||||||
|
public const string PrevYear = "02 summer Y1";
|
||||||
|
|
||||||
|
/// <summary>The day after <see cref="Now"/>.</summary>
|
||||||
|
public const string NextDay = "03 summer Y2";
|
||||||
|
|
||||||
|
/// <summary>The month after <see cref="Now"/>.</summary>
|
||||||
|
public const string NextMonth = "02 fall Y2";
|
||||||
|
|
||||||
|
/// <summary>The year after <see cref="Now"/>.</summary>
|
||||||
|
public const string NextYear = "02 summer Y3";
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
/*********
|
/*********
|
||||||
|
|
@ -63,7 +89,7 @@ namespace StardewModdingAPI.Tests
|
||||||
[TestCase("01 winter Y1", ExpectedResult = "01 winter Y1")]
|
[TestCase("01 winter Y1", ExpectedResult = "01 winter Y1")]
|
||||||
public string ToString(string dateStr)
|
public string ToString(string dateStr)
|
||||||
{
|
{
|
||||||
return this.ParseDate(dateStr).ToString();
|
return this.GetDate(dateStr).ToString();
|
||||||
}
|
}
|
||||||
|
|
||||||
/****
|
/****
|
||||||
|
|
@ -80,58 +106,132 @@ namespace StardewModdingAPI.Tests
|
||||||
[TestCase("01 spring Y3", -(28 * 7 + 17), ExpectedResult = "12 spring Y1")] // negative year transition
|
[TestCase("01 spring Y3", -(28 * 7 + 17), ExpectedResult = "12 spring Y1")] // negative year transition
|
||||||
public string AddDays(string dateStr, int addDays)
|
public string AddDays(string dateStr, int addDays)
|
||||||
{
|
{
|
||||||
return this.ParseDate(dateStr).AddDays(addDays).ToString();
|
return this.GetDate(dateStr).AddDays(addDays).ToString();
|
||||||
}
|
}
|
||||||
|
|
||||||
[Test(Description = "Assert that the equality operators work as expected")]
|
/****
|
||||||
public void EqualityOperators()
|
** GetHashCode
|
||||||
|
****/
|
||||||
|
[Test(Description = "Assert that GetHashCode returns a unique ordered value for every date.")]
|
||||||
|
public void GetHashCode_ReturnsUniqueOrderedValue()
|
||||||
{
|
{
|
||||||
SDate s1 = new SDate(1, "spring", 2);
|
IDictionary<int, SDate> hashes = new Dictionary<int, SDate>();
|
||||||
SDate s2 = new SDate(1, "spring", 2);
|
int lastHash = int.MinValue;
|
||||||
SDate s3 = new SDate(1, "spring", 3);
|
for (int year = 1; year <= 4; year++)
|
||||||
SDate s4 = new SDate(12, "spring", 2);
|
|
||||||
SDate s5 = new SDate(1, "summer", 2);
|
|
||||||
|
|
||||||
Assert.AreEqual(true, s1 == s2);
|
|
||||||
Assert.AreNotEqual(true, s1 == s3);
|
|
||||||
Assert.AreNotEqual(true, s1 == s4);
|
|
||||||
Assert.AreNotEqual(true, s1 == s5);
|
|
||||||
}
|
|
||||||
|
|
||||||
[Test(Description = "Assert that the comparison operators work as expected")]
|
|
||||||
public void ComparisonOperators()
|
|
||||||
{
|
{
|
||||||
SDate s1 = new SDate(1, "spring", 2);
|
foreach (string season in SDateTests.ValidSeasons)
|
||||||
SDate s2 = new SDate(1, "spring", 2);
|
{
|
||||||
SDate s3 = new SDate(1, "spring", 3);
|
foreach (int day in SDateTests.ValidDays)
|
||||||
SDate s4 = new SDate(12, "spring", 2);
|
{
|
||||||
SDate s5 = new SDate(1, "summer", 2);
|
SDate date = new SDate(day, season, year);
|
||||||
SDate s6 = new SDate(1, "winter", 1);
|
int hash = date.GetHashCode();
|
||||||
SDate s7 = new SDate(13, "fall", 1);
|
if (hashes.TryGetValue(hash, out SDate otherDate))
|
||||||
|
Assert.Fail($"Received identical hash code {hash} for dates {otherDate} and {date}.");
|
||||||
|
if (hash < lastHash)
|
||||||
|
Assert.Fail($"Received smaller hash code for date {date} ({hash}) relative to {hashes[lastHash]} ({lastHash}).");
|
||||||
|
|
||||||
Assert.AreEqual(true, s1 <= s2);
|
lastHash = hash;
|
||||||
Assert.AreEqual(true, s1 >= s2);
|
hashes[hash] = date;
|
||||||
Assert.AreEqual(true, s1 < s4);
|
|
||||||
Assert.AreEqual(true, s1 <= s4);
|
|
||||||
Assert.AreEqual(true, s4 > s1);
|
|
||||||
Assert.AreEqual(true, s4 >= s1);
|
|
||||||
Assert.AreEqual(true, s5 > s7);
|
|
||||||
Assert.AreEqual(true, s5 >= s7);
|
|
||||||
Assert.AreEqual(true, s6 < s5);
|
|
||||||
Assert.AreEqual(true, s6 <= s5);
|
|
||||||
Assert.AreEqual(true, s1 < s5);
|
|
||||||
Assert.AreEqual(true, s1 <= s5);
|
|
||||||
Assert.AreEqual(true, s5 > s1);
|
|
||||||
Assert.AreEqual(true, s5 >= s1);
|
|
||||||
}
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
[Test(Description = "Assert that the == operator returns the expected values. We only need a few test cases, since it's based on GetHashCode which is tested more thoroughly.")]
|
||||||
|
[TestCase(Dates.Now, null, ExpectedResult = false)]
|
||||||
|
[TestCase(Dates.Now, Dates.PrevDay, ExpectedResult = false)]
|
||||||
|
[TestCase(Dates.Now, Dates.PrevMonth, ExpectedResult = false)]
|
||||||
|
[TestCase(Dates.Now, Dates.PrevYear, ExpectedResult = false)]
|
||||||
|
[TestCase(Dates.Now, Dates.Now, ExpectedResult = true)]
|
||||||
|
[TestCase(Dates.Now, Dates.NextDay, ExpectedResult = false)]
|
||||||
|
[TestCase(Dates.Now, Dates.NextMonth, ExpectedResult = false)]
|
||||||
|
[TestCase(Dates.Now, Dates.NextYear, ExpectedResult = false)]
|
||||||
|
public bool Operators_Equals(string now, string other)
|
||||||
|
{
|
||||||
|
return this.GetDate(now) == this.GetDate(other);
|
||||||
|
}
|
||||||
|
|
||||||
|
[Test(Description = "Assert that the != operator returns the expected values. We only need a few test cases, since it's based on GetHashCode which is tested more thoroughly.")]
|
||||||
|
[TestCase(Dates.Now, null, ExpectedResult = true)]
|
||||||
|
[TestCase(Dates.Now, Dates.PrevDay, ExpectedResult = true)]
|
||||||
|
[TestCase(Dates.Now, Dates.PrevMonth, ExpectedResult = true)]
|
||||||
|
[TestCase(Dates.Now, Dates.PrevYear, ExpectedResult = true)]
|
||||||
|
[TestCase(Dates.Now, Dates.Now, ExpectedResult = false)]
|
||||||
|
[TestCase(Dates.Now, Dates.NextDay, ExpectedResult = true)]
|
||||||
|
[TestCase(Dates.Now, Dates.NextMonth, ExpectedResult = true)]
|
||||||
|
[TestCase(Dates.Now, Dates.NextYear, ExpectedResult = true)]
|
||||||
|
public bool Operators_NotEquals(string now, string other)
|
||||||
|
{
|
||||||
|
return this.GetDate(now) != this.GetDate(other);
|
||||||
|
}
|
||||||
|
|
||||||
|
[Test(Description = "Assert that the < operator returns the expected values. We only need a few test cases, since it's based on GetHashCode which is tested more thoroughly.")]
|
||||||
|
[TestCase(Dates.Now, null, ExpectedResult = false)]
|
||||||
|
[TestCase(Dates.Now, Dates.PrevDay, ExpectedResult = false)]
|
||||||
|
[TestCase(Dates.Now, Dates.PrevMonth, ExpectedResult = false)]
|
||||||
|
[TestCase(Dates.Now, Dates.PrevYear, ExpectedResult = false)]
|
||||||
|
[TestCase(Dates.Now, Dates.Now, ExpectedResult = false)]
|
||||||
|
[TestCase(Dates.Now, Dates.NextDay, ExpectedResult = true)]
|
||||||
|
[TestCase(Dates.Now, Dates.NextMonth, ExpectedResult = true)]
|
||||||
|
[TestCase(Dates.Now, Dates.NextYear, ExpectedResult = true)]
|
||||||
|
public bool Operators_LessThan(string now, string other)
|
||||||
|
{
|
||||||
|
return this.GetDate(now) < this.GetDate(other);
|
||||||
|
}
|
||||||
|
|
||||||
|
[Test(Description = "Assert that the <= operator returns the expected values. We only need a few test cases, since it's based on GetHashCode which is tested more thoroughly.")]
|
||||||
|
[TestCase(Dates.Now, null, ExpectedResult = false)]
|
||||||
|
[TestCase(Dates.Now, Dates.PrevDay, ExpectedResult = false)]
|
||||||
|
[TestCase(Dates.Now, Dates.PrevMonth, ExpectedResult = false)]
|
||||||
|
[TestCase(Dates.Now, Dates.PrevYear, ExpectedResult = false)]
|
||||||
|
[TestCase(Dates.Now, Dates.Now, ExpectedResult = true)]
|
||||||
|
[TestCase(Dates.Now, Dates.NextDay, ExpectedResult = true)]
|
||||||
|
[TestCase(Dates.Now, Dates.NextMonth, ExpectedResult = true)]
|
||||||
|
[TestCase(Dates.Now, Dates.NextYear, ExpectedResult = true)]
|
||||||
|
public bool Operators_LessThanOrEqual(string now, string other)
|
||||||
|
{
|
||||||
|
return this.GetDate(now) <= this.GetDate(other);
|
||||||
|
}
|
||||||
|
|
||||||
|
[Test(Description = "Assert that the > operator returns the expected values. We only need a few test cases, since it's based on GetHashCode which is tested more thoroughly.")]
|
||||||
|
[TestCase(Dates.Now, null, ExpectedResult = false)]
|
||||||
|
[TestCase(Dates.Now, Dates.PrevDay, ExpectedResult = true)]
|
||||||
|
[TestCase(Dates.Now, Dates.PrevMonth, ExpectedResult = true)]
|
||||||
|
[TestCase(Dates.Now, Dates.PrevYear, ExpectedResult = true)]
|
||||||
|
[TestCase(Dates.Now, Dates.Now, ExpectedResult = false)]
|
||||||
|
[TestCase(Dates.Now, Dates.NextDay, ExpectedResult = false)]
|
||||||
|
[TestCase(Dates.Now, Dates.NextMonth, ExpectedResult = false)]
|
||||||
|
[TestCase(Dates.Now, Dates.NextYear, ExpectedResult = false)]
|
||||||
|
public bool Operators_MoreThan(string now, string other)
|
||||||
|
{
|
||||||
|
return this.GetDate(now) > this.GetDate(other);
|
||||||
|
}
|
||||||
|
|
||||||
|
[Test(Description = "Assert that the > operator returns the expected values. We only need a few test cases, since it's based on GetHashCode which is tested more thoroughly.")]
|
||||||
|
[TestCase(Dates.Now, null, ExpectedResult = false)]
|
||||||
|
[TestCase(Dates.Now, Dates.PrevDay, ExpectedResult = true)]
|
||||||
|
[TestCase(Dates.Now, Dates.PrevMonth, ExpectedResult = true)]
|
||||||
|
[TestCase(Dates.Now, Dates.PrevYear, ExpectedResult = true)]
|
||||||
|
[TestCase(Dates.Now, Dates.Now, ExpectedResult = false)]
|
||||||
|
[TestCase(Dates.Now, Dates.NextDay, ExpectedResult = false)]
|
||||||
|
[TestCase(Dates.Now, Dates.NextMonth, ExpectedResult = false)]
|
||||||
|
[TestCase(Dates.Now, Dates.NextYear, ExpectedResult = false)]
|
||||||
|
public bool Operators_MoreThanOrEqual(string now, string other)
|
||||||
|
{
|
||||||
|
return this.GetDate(now) > this.GetDate(other);
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
/*********
|
/*********
|
||||||
** Private methods
|
** Private methods
|
||||||
*********/
|
*********/
|
||||||
/// <summary>Convert a string date into a game date, to make unit tests easier to read.</summary>
|
/// <summary>Convert a string date into a game date, to make unit tests easier to read.</summary>
|
||||||
/// <param name="dateStr">The date string like "dd MMMM yy".</param>
|
/// <param name="dateStr">The date string like "dd MMMM yy".</param>
|
||||||
private SDate ParseDate(string dateStr)
|
private SDate GetDate(string dateStr)
|
||||||
{
|
{
|
||||||
|
if (dateStr == null)
|
||||||
|
return null;
|
||||||
|
|
||||||
void Fail(string reason) => throw new AssertionException($"Couldn't parse date '{dateStr}' because {reason}.");
|
void Fail(string reason) => throw new AssertionException($"Couldn't parse date '{dateStr}' because {reason}.");
|
||||||
|
|
||||||
// parse
|
// parse
|
||||||
|
|
|
||||||
|
|
@ -13,6 +13,9 @@ namespace StardewModdingAPI.Utilities
|
||||||
/// <summary>The internal season names in order.</summary>
|
/// <summary>The internal season names in order.</summary>
|
||||||
private readonly string[] Seasons = { "spring", "summer", "fall", "winter" };
|
private readonly string[] Seasons = { "spring", "summer", "fall", "winter" };
|
||||||
|
|
||||||
|
/// <summary>The number of seasons in a year.</summary>
|
||||||
|
private int SeasonsInYear => this.Seasons.Length;
|
||||||
|
|
||||||
/// <summary>The number of days in a season.</summary>
|
/// <summary>The number of days in a season.</summary>
|
||||||
private readonly int DaysInSeason = 28;
|
private readonly int DaysInSeason = 28;
|
||||||
|
|
||||||
|
|
@ -77,10 +80,8 @@ namespace StardewModdingAPI.Utilities
|
||||||
// handle season transition
|
// handle season transition
|
||||||
if (day > this.DaysInSeason || day < 1)
|
if (day > this.DaysInSeason || day < 1)
|
||||||
{
|
{
|
||||||
// get current season index
|
// get season index
|
||||||
int curSeasonIndex = Array.IndexOf(this.Seasons, this.Season);
|
int curSeasonIndex = this.GetSeasonIndex();
|
||||||
if (curSeasonIndex == -1)
|
|
||||||
throw new InvalidOperationException($"The current season '{this.Season}' wasn't recognised.");
|
|
||||||
|
|
||||||
// get season offset
|
// get season offset
|
||||||
int seasonOffset = day / this.DaysInSeason;
|
int seasonOffset = day / this.DaysInSeason;
|
||||||
|
|
@ -94,7 +95,7 @@ namespace StardewModdingAPI.Utilities
|
||||||
}
|
}
|
||||||
|
|
||||||
// validate
|
// validate
|
||||||
if(year < 1)
|
if (year < 1)
|
||||||
throw new ArithmeticException($"Adding {offset} days to {this} would result in invalid date {day:00} {season} {year}.");
|
throw new ArithmeticException($"Adding {offset} days to {this} would result in invalid date {day:00} {season} {year}.");
|
||||||
|
|
||||||
// return new date
|
// return new date
|
||||||
|
|
@ -116,157 +117,88 @@ namespace StardewModdingAPI.Utilities
|
||||||
/*********
|
/*********
|
||||||
** Operator methods
|
** Operator methods
|
||||||
*********/
|
*********/
|
||||||
|
/// <summary>Get whether one date is equal to another.</summary>
|
||||||
/// <summary>
|
/// <param name="date">The base date to compare.</param>
|
||||||
/// Equality operator. Tests the date being equal to each other
|
/// <param name="other">The other date to compare.</param>
|
||||||
/// </summary>
|
|
||||||
/// <param name="s1">The first date being compared</param>
|
|
||||||
/// <param name="s2">The second date being compared</param>
|
|
||||||
/// <returns>The equality of the dates</returns>
|
/// <returns>The equality of the dates</returns>
|
||||||
public static bool operator ==(SDate s1, SDate s2)
|
public static bool operator ==(SDate date, SDate other)
|
||||||
{
|
{
|
||||||
if (s1.Day == s2.Day && s1.Year == s2.Year && s1.Season == s2.Season)
|
return date?.GetHashCode() == other?.GetHashCode();
|
||||||
return true;
|
|
||||||
else
|
|
||||||
return false;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
/// <summary>
|
/// <summary>Get whether one date is not equal to another.</summary>
|
||||||
/// Inequality operator. Tests the date being not equal to each other
|
/// <param name="date">The base date to compare.</param>
|
||||||
/// </summary>
|
/// <param name="other">The other date to compare.</param>
|
||||||
/// <param name="s1">The first date being compared</param>
|
public static bool operator !=(SDate date, SDate other)
|
||||||
/// <param name="s2">The second date being compared</param>
|
|
||||||
/// <returns>The inequality of the dates</returns>
|
|
||||||
public static bool operator !=(SDate s1, SDate s2)
|
|
||||||
{
|
{
|
||||||
if (s1.Day == s2.Day && s1.Year == s2.Year && s1.Season == s2.Season)
|
return date?.GetHashCode() != other?.GetHashCode();
|
||||||
return false;
|
|
||||||
else
|
|
||||||
return true;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
/// <summary>
|
/// <summary>Get whether one date is more than another.</summary>
|
||||||
/// Less than operator. Tests the date being less than to each other
|
/// <param name="date">The base date to compare.</param>
|
||||||
/// </summary>
|
/// <param name="other">The other date to compare.</param>
|
||||||
/// <param name="s1">The first date being compared</param>
|
public static bool operator >(SDate date, SDate other)
|
||||||
/// <param name="s2">The second date being compared</param>
|
|
||||||
/// <returns>If the dates are less than</returns>
|
|
||||||
public static bool operator >(SDate s1, SDate s2)
|
|
||||||
{
|
{
|
||||||
if (s1.Year > s2.Year)
|
return date?.GetHashCode() > other?.GetHashCode();
|
||||||
return true;
|
|
||||||
else if (s1.Year == s2.Year)
|
|
||||||
{
|
|
||||||
if (s1.Season == "winter" && s2.Season != "winter")
|
|
||||||
return true;
|
|
||||||
else if (s1.Season == s2.Season && s1.Day > s2.Day)
|
|
||||||
return true;
|
|
||||||
if (s1.Season == "fall" && (s2.Season == "summer" || s2.Season == "spring"))
|
|
||||||
return true;
|
|
||||||
if (s1.Season == "summer" && s2.Season == "spring")
|
|
||||||
return true;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
return false;
|
/// <summary>Get whether one date is more than or equal to another.</summary>
|
||||||
}
|
/// <param name="date">The base date to compare.</param>
|
||||||
|
/// <param name="other">The other date to compare.</param>
|
||||||
/// <summary>
|
public static bool operator >=(SDate date, SDate other)
|
||||||
/// Less or equal than operator. Tests the date being less than or equal to each other
|
|
||||||
/// </summary>
|
|
||||||
/// <param name="s1">The first date being compared</param>
|
|
||||||
/// <param name="s2">The second date being compared</param>
|
|
||||||
/// <returns>If the dates are less than or equal than</returns>
|
|
||||||
public static bool operator >=(SDate s1, SDate s2)
|
|
||||||
{
|
{
|
||||||
if (s1.Year > s2.Year)
|
return date?.GetHashCode() >= other?.GetHashCode();
|
||||||
return true;
|
}
|
||||||
else if (s1.Year == s2.Year)
|
|
||||||
|
/// <summary>Get whether one date is less than or equal to another.</summary>
|
||||||
|
/// <param name="date">The base date to compare.</param>
|
||||||
|
/// <param name="other">The other date to compare.</param>
|
||||||
|
public static bool operator <=(SDate date, SDate other)
|
||||||
{
|
{
|
||||||
if (s1.Season == "winter" && s2.Season != "winter")
|
return date?.GetHashCode() <= other?.GetHashCode();
|
||||||
return true;
|
|
||||||
else if (s1.Season == s2.Season && s1.Day >= s2.Day)
|
|
||||||
return true;
|
|
||||||
if (s1.Season == "fall" && (s2.Season == "summer" || s2.Season == "spring"))
|
|
||||||
return true;
|
|
||||||
if (s1.Season == "summer" && s2.Season == "spring")
|
|
||||||
return true;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
return false;
|
/// <summary>Get whether one date is less than another.</summary>
|
||||||
}
|
/// <param name="date">The base date to compare.</param>
|
||||||
|
/// <param name="other">The other date to compare.</param>
|
||||||
/// <summary>
|
public static bool operator <(SDate date, SDate other)
|
||||||
/// Greater or equal than operator. Tests the date being greater than or equal to each other
|
|
||||||
/// </summary>
|
|
||||||
/// <param name="s1">The first date being compared</param>
|
|
||||||
/// <param name="s2">The second date being compared</param>
|
|
||||||
/// <returns>If the dates are greater than or equal than</returns>
|
|
||||||
public static bool operator <=(SDate s1, SDate s2)
|
|
||||||
{
|
{
|
||||||
if (s1.Year < s2.Year)
|
return date?.GetHashCode() < other?.GetHashCode();
|
||||||
return true;
|
|
||||||
else if (s1.Year == s2.Year)
|
|
||||||
{
|
|
||||||
if (s1.Season == s2.Season && s1.Day <= s2.Day)
|
|
||||||
return true;
|
|
||||||
else if (s1.Season == "spring" && s2.Season != "spring")
|
|
||||||
return true;
|
|
||||||
if (s1.Season == "summer" && (s2.Season == "fall" || s2.Season == "winter"))
|
|
||||||
return true;
|
|
||||||
if (s1.Season == "fall" && s2.Season == "winter")
|
|
||||||
return true;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
return false;
|
/// <summary>Overrides the equals function.</summary>
|
||||||
}
|
|
||||||
|
|
||||||
/// <summary>
|
|
||||||
/// Greater than operator. Tests the date being greater than to each other
|
|
||||||
/// </summary>
|
|
||||||
/// <param name="s1">The first date being compared</param>
|
|
||||||
/// <param name="s2">The second date being compared</param>
|
|
||||||
/// <returns>If the dates are greater than</returns>
|
|
||||||
public static bool operator <(SDate s1, SDate s2)
|
|
||||||
{
|
|
||||||
if (s1.Year < s2.Year)
|
|
||||||
return true;
|
|
||||||
else if (s1.Year == s2.Year)
|
|
||||||
{
|
|
||||||
if (s1.Season == s2.Season && s1.Day < s2.Day)
|
|
||||||
return true;
|
|
||||||
else if (s1.Season == "spring" && s2.Season != "spring")
|
|
||||||
return true;
|
|
||||||
if (s1.Season == "summer" && (s2.Season == "fall" || s2.Season == "winter"))
|
|
||||||
return true;
|
|
||||||
if (s1.Season == "fall" && s2.Season == "winter")
|
|
||||||
return true;
|
|
||||||
}
|
|
||||||
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
|
|
||||||
/// <summary>
|
|
||||||
/// Overrides the equals function.
|
|
||||||
/// </summary>
|
|
||||||
/// <param name="obj">Object being compared.</param>
|
/// <param name="obj">Object being compared.</param>
|
||||||
/// <returns>The equalaity of the object.</returns>
|
/// <returns>The equalaity of the object.</returns>
|
||||||
public override bool Equals(object obj)
|
public override bool Equals(object obj)
|
||||||
{
|
{
|
||||||
return base.Equals(obj);
|
return obj is SDate other && this == other;
|
||||||
}
|
}
|
||||||
|
|
||||||
/// <summary>
|
/// <summary>Get a hash code which uniquely identifies a date.</summary>
|
||||||
/// This returns the hashcode of the object
|
|
||||||
/// </summary>
|
|
||||||
/// <returns>The hashcode of the object.</returns>
|
|
||||||
public override int GetHashCode()
|
public override int GetHashCode()
|
||||||
{
|
{
|
||||||
return base.GetHashCode();
|
// return the number of days since 01 spring Y1
|
||||||
|
int yearIndex = this.Year - 1;
|
||||||
|
return
|
||||||
|
yearIndex * this.DaysInSeason * this.SeasonsInYear
|
||||||
|
+ this.GetSeasonIndex() * this.DaysInSeason
|
||||||
|
+ this.Day;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
||||||
/*********
|
/*********
|
||||||
** Private methods
|
** Private methods
|
||||||
*********/
|
*********/
|
||||||
|
/// <summary>Get the current season index.</summary>
|
||||||
|
/// <exception cref="InvalidOperationException">The current season wasn't recognised.</exception>
|
||||||
|
private int GetSeasonIndex()
|
||||||
|
{
|
||||||
|
int index = Array.IndexOf(this.Seasons, this.Season);
|
||||||
|
if (index == -1)
|
||||||
|
throw new InvalidOperationException($"The current season '{this.Season}' wasn't recognised.");
|
||||||
|
return index;
|
||||||
|
}
|
||||||
|
|
||||||
/// <summary>Get the real index in an array which should be treated as a two-way loop.</summary>
|
/// <summary>Get the real index in an array which should be treated as a two-way loop.</summary>
|
||||||
/// <param name="index">The index in the looped array.</param>
|
/// <param name="index">The index in the looped array.</param>
|
||||||
/// <param name="length">The number of elements in the array.</param>
|
/// <param name="length">The number of elements in the array.</param>
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue