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323 lines
16 KiB
323 lines
16 KiB
#nullable enable
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using IPA.Config.Data;
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using IPA.Config.Stores;
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using IPA.Config.Stores.Converters;
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using System;
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using System.Collections.Generic;
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using SVersion = SemVer.Version;
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using Version = Hive.Versioning.Version;
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namespace IPA.Utilities
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{
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/// <summary>
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/// A type that wraps <see cref="Version"/> so that the string of the version is stored when the string is
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/// not a valid <see cref="Version"/>.
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/// </summary>
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public class AlmostVersion : IComparable<AlmostVersion>, IComparable<Version>,
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#pragma warning disable CS0618 // Type or member is obsolete
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IComparable<SVersion>
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#pragma warning restore CS0618 // Type or member is obsolete
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{
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/// <summary>
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/// Represents a storage type of either parsed <see cref="Version"/> object or raw <see cref="String"/>.
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/// </summary>
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public enum StoredAs
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{
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/// <summary>
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/// The version was stored as a <see cref="SVersion"/>.
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/// </summary>
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SemVer,
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/// <summary>
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/// The version was stored as a <see cref="String"/>.
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/// </summary>
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String
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}
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/// <summary>
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/// Creates a new <see cref="AlmostVersion"/> with the version string provided in <paramref name="vertext"/>.
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/// </summary>
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/// <param name="vertext">the version string to store</param>
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public AlmostVersion(string vertext)
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{
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if (!TryParseFrom(vertext, StoredAs.SemVer))
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_ = TryParseFrom(vertext, StoredAs.String);
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}
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/// <summary>
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/// Creates an <see cref="AlmostVersion"/> from the <see cref="Version"/> provided in <paramref name="ver"/>.
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/// </summary>
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/// <param name="ver">the <see cref="Version"/> to store</param>
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public AlmostVersion(Version ver)
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{
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SemverValue = ver;
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StorageMode = StoredAs.SemVer;
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}
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/// <summary>
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/// Creates an <see cref="AlmostVersion"/> from the <see cref="SVersion"/> provided in <paramref name="ver"/>.
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/// </summary>
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/// <param name="ver">the <see cref="SVersion"/> to store</param>
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[Obsolete("Use Hive.Versioning.Version constructor instead.")]
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public AlmostVersion(SVersion ver) : this(ver?.UnderlyingVersion ?? throw new ArgumentNullException(nameof(ver))) { }
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/// <summary>
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/// Creates an <see cref="AlmostVersion"/> from the version string in <paramref name="vertext"/> stored using
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/// the storage mode specified in <paramref name="mode"/>.
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/// </summary>
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/// <param name="vertext">the text to parse as an <see cref="AlmostVersion"/></param>
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/// <param name="mode">the storage mode to store the version in</param>
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public AlmostVersion(string vertext, StoredAs mode)
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{
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if (!TryParseFrom(vertext, mode))
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throw new ArgumentException($"{nameof(vertext)} could not be stored as {mode}!");
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}
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/// <summary>
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/// Creates a new <see cref="AlmostVersion"/> from the version string in <paramref name="vertext"/> stored the
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/// same way as the <see cref="AlmostVersion"/> passed in <paramref name="copyMode"/>.
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/// </summary>
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/// <param name="vertext">the text to parse as an <see cref="AlmostVersion"/></param>
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/// <param name="copyMode">an <see cref="AlmostVersion"/> to copy the storage mode of</param>
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public AlmostVersion(string vertext, AlmostVersion copyMode)
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{
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if (copyMode is null)
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throw new ArgumentNullException(nameof(copyMode));
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if (!TryParseFrom(vertext, copyMode.StorageMode))
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_ = TryParseFrom(vertext, StoredAs.String); // silently parse differently
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}
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private bool TryParseFrom(string str, StoredAs mode)
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{
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if (mode == StoredAs.SemVer)
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{
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StorageMode = StoredAs.SemVer;
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var result = Version.TryParse(str, out var version);
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SemverValue = version;
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return result;
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}
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else
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{
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StringValue = str;
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StorageMode = StoredAs.String;
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return true;
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}
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}
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/// <summary>
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/// The value of the <see cref="AlmostVersion"/> if it was stored as a <see cref="string"/>.
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/// </summary>
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/// <value>the stored value as a <see cref="string"/>, or <see langword="null"/> if not stored as a string.</value>
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public string? StringValue { get; private set; }
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/// <summary>
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/// The value of the <see cref="AlmostVersion"/> if it was stored as a <see cref="Version"/>.
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/// </summary>
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/// <value>the stored value as a <see cref="Version"/>, or <see langword="null"/> if not stored as a version.</value>
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public Version? SemverValue { get; private set; }
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/// <summary>
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/// The way the value is stored, whether it be as a <see cref="Version"/> or a <see cref="string"/>.
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/// </summary>
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/// <value>the storage mode used to store this value</value>
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public StoredAs StorageMode { get; private set; }
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/// <summary>
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/// Gets a string representation of the current version. If the value is stored as a string, this returns it. If it is
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/// stored as a <see cref="Version"/>, it is equivalent to calling <see cref="Version.ToString()"/>.
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/// </summary>
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/// <returns>a string representation of the current version</returns>
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/// <seealso cref="object.ToString"/>
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public override string ToString() =>
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StorageMode == StoredAs.SemVer ? SemverValue!.ToString() : StringValue!;
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/// <summary>
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/// Compares <see langword="this"/> to the <see cref="AlmostVersion"/> in <paramref name="other"/> using <see cref="Version.CompareTo(Version)"/>
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/// or <see cref="string.CompareTo(string)"/>, depending on the current store.
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/// </summary>
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/// <remarks>
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/// The storage methods of the two objects must be the same, or this will throw an <see cref="InvalidOperationException"/>.
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/// </remarks>
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/// <param name="other">the <see cref="AlmostVersion"/> to compare to</param>
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/// <returns>less than 0 if <paramref name="other"/> is considered bigger than <see langword="this"/>, 0 if equal, and greater than zero if smaller</returns>
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/// <seealso cref="CompareTo(Version)"/>
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public int CompareTo(AlmostVersion other)
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{
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if (other is null) return 1;
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return StorageMode == StoredAs.SemVer && other.StorageMode == StoredAs.SemVer
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? SemverValue!.CompareTo(other.SemverValue!)
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: string.Compare(ToString(), other.ToString(), StringComparison.Ordinal);
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}
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/// <summary>
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/// Compares <see langword="this"/> to the <see cref="Version"/> in <paramref name="other"/> using <see cref="Version.CompareTo(Version)"/>.
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/// </summary>
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/// <remarks>
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/// The storage method of <see langword="this"/> must be <see cref="StoredAs.SemVer"/>, else an <see cref="InvalidOperationException"/> will
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/// be thrown.
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/// </remarks>
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/// <param name="other">the <see cref="Version"/> to compare to</param>
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/// <returns>less than 0 if <paramref name="other"/> is considered bigger than <see langword="this"/>, 0 if equal, and greater than zero if smaller</returns>
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/// <seealso cref="CompareTo(AlmostVersion)"/>
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public int CompareTo(Version other)
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{
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if (StorageMode != StoredAs.SemVer)
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throw new InvalidOperationException("Cannot compare a SemVer version with an AlmostVersion stored as a string!");
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return SemverValue!.CompareTo(other);
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}
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/// <summary>
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/// Compares <see langword="this"/> to the <see cref="SVersion"/> in <paramref name="other"/> using <see cref="Version.CompareTo(Version)"/>.
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/// </summary>
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/// <remarks>
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/// The storage method of <see langword="this"/> must be <see cref="StoredAs.SemVer"/>, else an <see cref="InvalidOperationException"/> will
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/// be thrown.
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/// </remarks>
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/// <param name="other">the <see cref="SVersion"/> to compare to</param>
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/// <returns>less than 0 if <paramref name="other"/> is considered bigger than <see langword="this"/>, 0 if equal, and greater than zero if smaller</returns>
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/// <seealso cref="CompareTo(AlmostVersion)"/>
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[Obsolete("Use the Hive.Versioning.Version overload instead.")]
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public int CompareTo(SVersion other) => CompareTo(other.UnderlyingVersion);
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/// <summary>
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/// Performs a strict equality check between <see langword="this"/> and <paramref name="obj"/>.
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/// </summary>
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/// <remarks>
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/// This may return <see langword="false"/> where <see cref="operator ==(AlmostVersion, AlmostVersion)"/> returns <see langword="true"/>
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/// </remarks>
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/// <param name="obj">the object to compare to</param>
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/// <returns><see langword="true"/> if they are equal, <see langword="false"/> otherwise</returns>
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/// <seealso cref="object.Equals(object)"/>
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public override bool Equals(object obj)
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{
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return obj is AlmostVersion version &&
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SemverValue == version.SemverValue &&
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StringValue == version.StringValue &&
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StorageMode == version.StorageMode;
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}
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/// <summary>
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/// Default generated hash code function generated by VS.
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/// </summary>
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/// <returns>a value unique to each object, except those that are considered equal by <see cref="Equals(object)"/></returns>
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/// <seealso cref="object.GetHashCode"/>
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public override int GetHashCode()
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{
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var hashCode = -126402897;
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hashCode = (hashCode * -1521134295) + EqualityComparer<Version?>.Default.GetHashCode(SemverValue);
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hashCode = (hashCode * -1521134295) + EqualityComparer<string?>.Default.GetHashCode(StringValue);
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hashCode = (hashCode * -1521134295) + StorageMode.GetHashCode();
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return hashCode;
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}
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/// <summary>
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/// Compares two versions, only taking into account the numeric part of the version if they are stored as <see cref="Version"/>s,
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/// or strict equality if they are stored as <see cref="string"/>s.
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/// </summary>
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/// <remarks>
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/// This is a looser equality than <see cref="Equals(object)"/>, meaning that this may return <see langword="true"/> where <see cref="Equals(object)"/>
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/// does not.
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/// </remarks>
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/// <param name="l">the first value to compare</param>
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/// <param name="r">the second value to compare</param>
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/// <returns><see langword="true"/> if they are mostly equal, <see langword="false"/> otherwise</returns>
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/// <seealso cref="Equals(object)"/>
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public static bool operator==(AlmostVersion l, AlmostVersion r)
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{
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if (l is null && r is null) return true;
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if (l is null || r is null) return false;
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if (l.StorageMode != r.StorageMode) return false;
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return l.StorageMode == StoredAs.SemVer
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? Utils.VersionCompareNoPrerelease(l.SemverValue!, r.SemverValue!) == 0
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: l.StringValue == r.StringValue;
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}
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/// <summary>
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/// The opposite of <see cref="operator ==(AlmostVersion, AlmostVersion)"/>. Equivalent to <c>!(l == r)</c>.
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/// </summary>
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/// <param name="l">the first value to compare</param>
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/// <param name="r">the second value to compare</param>
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/// <returns><see langword="true"/> if they are not mostly equal, <see langword="false"/> otherwise</returns>
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/// <seealso cref="operator ==(AlmostVersion, AlmostVersion)"/>
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public static bool operator!=(AlmostVersion l, AlmostVersion r) => !(l == r);
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// implicitly convertible from Version
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#pragma warning disable CS0618 // Type or member is obsolete
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#pragma warning disable CA2225 // Operator overloads have named alternates
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/// <summary>
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/// Implicitly converts a <see cref="SVersion"/> to <see cref="AlmostVersion"/> using <see cref="AlmostVersion(SVersion)"/>.
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/// </summary>
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/// <param name="ver">the <see cref="SVersion"/> to convert</param>
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/// <seealso cref="AlmostVersion(SVersion)"/>
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[Obsolete("Use Hive.Versioning.Version instead of SemVer.Version")]
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public static implicit operator AlmostVersion?(SVersion? ver) => ver is null ? null : new(ver);
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// implicitly convertible to Version
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/// <summary>
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/// Implicitly converts an <see cref="AlmostVersion"/> to <see cref="SVersion"/>, if applicable, using <see cref="SemverValue"/>.
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/// If not applicable, returns <see langword="null"/>
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/// </summary>
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/// <param name="av">the <see cref="AlmostVersion"/> to convert to a <see cref="SVersion"/></param>
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/// <seealso cref="SemverValue"/>
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[Obsolete("Use Hive.Versioning.Version instead of SemVer.Version")]
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public static implicit operator SVersion?(AlmostVersion? av) => av?.SemverValue is not null ? SVersion.ForHiveVersion(av.SemverValue) : null;
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#pragma warning restore CS0618 // Type or member is obsolete
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/// <summary>
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/// Implicitly converts a <see cref="SVersion"/> to <see cref="AlmostVersion"/> using <see cref="AlmostVersion(SVersion)"/>.
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/// </summary>
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/// <param name="ver">the <see cref="SVersion"/> to convert</param>
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/// <seealso cref="AlmostVersion(SVersion)"/>
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public static implicit operator AlmostVersion?(Version? ver) => ver is null ? null : new(ver);
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// implicitly convertible to Version
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/// <summary>
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/// Implicitly converts an <see cref="AlmostVersion"/> to <see cref="SVersion"/>, if applicable, using <see cref="SemverValue"/>.
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/// If not applicable, returns <see langword="null"/>
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/// </summary>
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/// <param name="av">the <see cref="AlmostVersion"/> to convert to a <see cref="SVersion"/></param>
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/// <seealso cref="SemverValue"/>
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public static implicit operator Version?(AlmostVersion av) => av?.SemverValue;
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#pragma warning restore CA2225 // Operator overloads have named alternates
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public static bool operator <(AlmostVersion left, AlmostVersion right)
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=> left is null ? right is not null : left.CompareTo(right) < 0;
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public static bool operator <=(AlmostVersion left, AlmostVersion right)
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=> left is null || left.CompareTo(right) <= 0;
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public static bool operator >(AlmostVersion left, AlmostVersion right)
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=> left is not null && left.CompareTo(right) > 0;
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public static bool operator >=(AlmostVersion left, AlmostVersion right)
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=> left is null ? right is null : left.CompareTo(right) >= 0;
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}
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/// <summary>
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/// A <see cref="ValueConverter{T}"/> for <see cref="AlmostVersion"/>s.
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/// </summary>
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public sealed class AlmostVersionConverter : ValueConverter<AlmostVersion>
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{
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/// <summary>
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/// Converts a <see cref="Text"/> node into an <see cref="AlmostVersion"/>.
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/// </summary>
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/// <param name="value">the <see cref="Text"/> node to convert</param>
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/// <param name="parent">the owner of the new object</param>
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/// <returns></returns>
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public override AlmostVersion? FromValue(Value? value, object parent)
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=> Converter<string>.Default.FromValue(value, parent) switch
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{
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{ } v => new(v),
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_ => null
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};
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/// <summary>
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/// Converts an <see cref="AlmostVersion"/> to a <see cref="Text"/> node.
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/// </summary>
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/// <param name="obj">the <see cref="AlmostVersion"/> to convert</param>
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/// <param name="parent">the parent of <paramref name="obj"/></param>
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/// <returns>a <see cref="Text"/> node representing <paramref name="obj"/></returns>
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public override Value? ToValue(AlmostVersion? obj, object parent)
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=> Value.From(obj?.ToString());
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}
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}
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