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mirror of https://github.com/ppy/osu.git synced 2024-11-11 09:27:29 +08:00

Migrate decoding to line-buffered reader

Migrate all usages of StreamReader in the context of decoding beatmaps,
storyboards or skins to the new LineBufferedReader.
This commit is contained in:
Bartłomiej Dach 2019-09-10 00:43:30 +02:00
parent 7b1ff38df7
commit 11eda44d34
19 changed files with 64 additions and 59 deletions

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@ -7,6 +7,7 @@ using System.Linq;
using System.Text;
using NUnit.Framework;
using osu.Game.Beatmaps;
using osu.Game.IO;
using osu.Game.Rulesets.Mods;
using osu.Game.Rulesets.Osu.Objects;
using osu.Game.Tests.Beatmaps;
@ -21,7 +22,7 @@ namespace osu.Game.Rulesets.Osu.Tests
public void TestStacking()
{
using (var stream = new MemoryStream(Encoding.UTF8.GetBytes(beatmap_data)))
using (var reader = new StreamReader(stream))
using (var reader = new LineBufferedReader(stream))
{
var beatmap = Decoder.GetDecoder<Beatmap>(reader).Decode(reader);
var converted = new TestWorkingBeatmap(beatmap).GetPlayableBeatmap(new OsuRuleset().RulesetInfo, Array.Empty<Mod>());

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@ -2,7 +2,6 @@
// See the LICENCE file in the repository root for full licence text.
using System;
using System.IO;
using NUnit.Framework;
using osuTK;
using osuTK.Graphics;
@ -13,6 +12,7 @@ using osu.Game.Beatmaps;
using osu.Game.Rulesets.Objects.Types;
using osu.Game.Beatmaps.Formats;
using osu.Game.Beatmaps.Timing;
using osu.Game.IO;
using osu.Game.Rulesets.Catch.Beatmaps;
using osu.Game.Rulesets.Mods;
using osu.Game.Rulesets.Objects;
@ -30,13 +30,9 @@ namespace osu.Game.Tests.Beatmaps.Formats
public void TestDecodeBeatmapVersion()
{
using (var resStream = TestResources.OpenResource("beatmap-version.osu"))
using (var stream = new StreamReader(resStream))
using (var stream = new LineBufferedReader(resStream))
{
var decoder = Decoder.GetDecoder<Beatmap>(stream);
stream.BaseStream.Position = 0;
stream.DiscardBufferedData();
var working = new TestWorkingBeatmap(decoder.Decode(stream));
Assert.AreEqual(6, working.BeatmapInfo.BeatmapVersion);
@ -51,7 +47,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
var decoder = new LegacyBeatmapDecoder { ApplyOffsets = false };
using (var resStream = TestResources.OpenResource("Soleily - Renatus (Gamu) [Insane].osu"))
using (var stream = new StreamReader(resStream))
using (var stream = new LineBufferedReader(resStream))
{
var beatmap = decoder.Decode(stream);
var beatmapInfo = beatmap.BeatmapInfo;
@ -75,7 +71,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
var decoder = new LegacyBeatmapDecoder();
using (var resStream = TestResources.OpenResource("Soleily - Renatus (Gamu) [Insane].osu"))
using (var stream = new StreamReader(resStream))
using (var stream = new LineBufferedReader(resStream))
{
var beatmapInfo = decoder.Decode(stream).BeatmapInfo;
@ -101,7 +97,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
var decoder = new LegacyBeatmapDecoder();
using (var resStream = TestResources.OpenResource("Soleily - Renatus (Gamu) [Insane].osu"))
using (var stream = new StreamReader(resStream))
using (var stream = new LineBufferedReader(resStream))
{
var beatmap = decoder.Decode(stream);
var beatmapInfo = beatmap.BeatmapInfo;
@ -126,7 +122,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
var decoder = new LegacyBeatmapDecoder();
using (var resStream = TestResources.OpenResource("Soleily - Renatus (Gamu) [Insane].osu"))
using (var stream = new StreamReader(resStream))
using (var stream = new LineBufferedReader(resStream))
{
var difficulty = decoder.Decode(stream).BeatmapInfo.BaseDifficulty;
@ -145,7 +141,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
var decoder = new LegacyBeatmapDecoder { ApplyOffsets = false };
using (var resStream = TestResources.OpenResource("Soleily - Renatus (Gamu) [Insane].osu"))
using (var stream = new StreamReader(resStream))
using (var stream = new LineBufferedReader(resStream))
{
var beatmap = decoder.Decode(stream);
var metadata = beatmap.Metadata;
@ -164,7 +160,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
var decoder = new LegacyBeatmapDecoder { ApplyOffsets = false };
using (var resStream = TestResources.OpenResource("Soleily - Renatus (Gamu) [Insane].osu"))
using (var stream = new StreamReader(resStream))
using (var stream = new LineBufferedReader(resStream))
{
var beatmap = decoder.Decode(stream);
var controlPoints = beatmap.ControlPointInfo;
@ -239,7 +235,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
var decoder = new LegacyBeatmapDecoder { ApplyOffsets = false };
using (var resStream = TestResources.OpenResource("overlapping-control-points.osu"))
using (var stream = new StreamReader(resStream))
using (var stream = new LineBufferedReader(resStream))
{
var controlPoints = decoder.Decode(stream).ControlPointInfo;
@ -271,7 +267,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
var decoder = new LegacySkinDecoder();
using (var resStream = TestResources.OpenResource("Soleily - Renatus (Gamu) [Insane].osu"))
using (var stream = new StreamReader(resStream))
using (var stream = new LineBufferedReader(resStream))
{
var comboColors = decoder.Decode(stream).ComboColours;
@ -297,7 +293,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
var decoder = new LegacyBeatmapDecoder();
using (var resStream = TestResources.OpenResource("hitobject-combo-offset.osu"))
using (var stream = new StreamReader(resStream))
using (var stream = new LineBufferedReader(resStream))
{
var beatmap = decoder.Decode(stream);
@ -320,7 +316,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
var decoder = new LegacyBeatmapDecoder();
using (var resStream = TestResources.OpenResource("hitobject-combo-offset.osu"))
using (var stream = new StreamReader(resStream))
using (var stream = new LineBufferedReader(resStream))
{
var beatmap = decoder.Decode(stream);
@ -343,7 +339,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
var decoder = new LegacyBeatmapDecoder { ApplyOffsets = false };
using (var resStream = TestResources.OpenResource("Soleily - Renatus (Gamu) [Insane].osu"))
using (var stream = new StreamReader(resStream))
using (var stream = new LineBufferedReader(resStream))
{
var hitObjects = decoder.Decode(stream).HitObjects;
@ -371,7 +367,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
var decoder = new LegacyBeatmapDecoder { ApplyOffsets = false };
using (var resStream = TestResources.OpenResource("controlpoint-custom-samplebank.osu"))
using (var stream = new StreamReader(resStream))
using (var stream = new LineBufferedReader(resStream))
{
var hitObjects = decoder.Decode(stream).HitObjects;
@ -393,7 +389,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
var decoder = new LegacyBeatmapDecoder { ApplyOffsets = false };
using (var resStream = TestResources.OpenResource("hitobject-custom-samplebank.osu"))
using (var stream = new StreamReader(resStream))
using (var stream = new LineBufferedReader(resStream))
{
var hitObjects = decoder.Decode(stream).HitObjects;
@ -411,7 +407,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
var decoder = new LegacyBeatmapDecoder { ApplyOffsets = false };
using (var resStream = TestResources.OpenResource("hitobject-file-samples.osu"))
using (var stream = new StreamReader(resStream))
using (var stream = new LineBufferedReader(resStream))
{
var hitObjects = decoder.Decode(stream).HitObjects;
@ -431,7 +427,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
var decoder = new LegacyBeatmapDecoder { ApplyOffsets = false };
using (var resStream = TestResources.OpenResource("slider-samples.osu"))
using (var stream = new StreamReader(resStream))
using (var stream = new LineBufferedReader(resStream))
{
var hitObjects = decoder.Decode(stream).HitObjects;
@ -475,7 +471,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
var decoder = new LegacyBeatmapDecoder { ApplyOffsets = false };
using (var resStream = TestResources.OpenResource("hitobject-no-addition-bank.osu"))
using (var stream = new StreamReader(resStream))
using (var stream = new LineBufferedReader(resStream))
{
var hitObjects = decoder.Decode(stream).HitObjects;
@ -489,7 +485,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
var decoder = new LegacyBeatmapDecoder { ApplyOffsets = false };
using (var badResStream = TestResources.OpenResource("invalid-events.osu"))
using (var badStream = new StreamReader(badResStream))
using (var badStream = new LineBufferedReader(badResStream))
{
Assert.DoesNotThrow(() => decoder.Decode(badStream));
}

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@ -2,9 +2,9 @@
// See the LICENCE file in the repository root for full licence text.
using System.Collections.Generic;
using System.IO;
using NUnit.Framework;
using osu.Game.Beatmaps.Formats;
using osu.Game.IO;
using osu.Game.Tests.Resources;
namespace osu.Game.Tests.Beatmaps.Formats
@ -18,7 +18,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
var decoder = new LineLoggingDecoder(14);
using (var resStream = TestResources.OpenResource("comments.osu"))
using (var stream = new StreamReader(resStream))
using (var stream = new LineBufferedReader(resStream))
{
decoder.Decode(stream);

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@ -1,12 +1,12 @@
// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.
using System.IO;
using System.Linq;
using NUnit.Framework;
using osuTK;
using osu.Framework.Graphics;
using osu.Game.Beatmaps.Formats;
using osu.Game.IO;
using osu.Game.Storyboards;
using osu.Game.Tests.Resources;
@ -21,7 +21,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
var decoder = new LegacyStoryboardDecoder();
using (var resStream = TestResources.OpenResource("Himeringo - Yotsuya-san ni Yoroshiku (RLC) [Winber1's Extreme].osu"))
using (var stream = new StreamReader(resStream))
using (var stream = new LineBufferedReader(resStream))
{
var storyboard = decoder.Decode(stream);
@ -94,7 +94,7 @@ namespace osu.Game.Tests.Beatmaps.Formats
var decoder = new LegacyStoryboardDecoder();
using (var resStream = TestResources.OpenResource("variable-with-suffix.osb"))
using (var stream = new StreamReader(resStream))
using (var stream = new LineBufferedReader(resStream))
{
var storyboard = decoder.Decode(stream);

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@ -8,6 +8,7 @@ using NUnit.Framework;
using osu.Game.Audio;
using osu.Game.Beatmaps;
using osu.Game.Beatmaps.Formats;
using osu.Game.IO;
using osu.Game.IO.Serialization;
using osu.Game.Rulesets.Objects.Types;
using osu.Game.Rulesets.Scoring;
@ -148,13 +149,13 @@ namespace osu.Game.Tests.Beatmaps.Formats
private Beatmap decode(string filename, out Beatmap jsonDecoded)
{
using (var stream = TestResources.OpenResource(filename))
using (var sr = new StreamReader(stream))
using (var sr = new LineBufferedReader(stream))
{
var legacyDecoded = new LegacyBeatmapDecoder { ApplyOffsets = false }.Decode(sr);
using (var ms = new MemoryStream())
using (var sw = new StreamWriter(ms))
using (var sr2 = new StreamReader(ms))
using (var sr2 = new LineBufferedReader(ms))
{
sw.Write(legacyDecoded.Serialize());
sw.Flush();

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@ -7,6 +7,7 @@ using NUnit.Framework;
using osu.Game.Beatmaps;
using osu.Game.Tests.Resources;
using osu.Game.Beatmaps.Formats;
using osu.Game.IO;
using osu.Game.IO.Archives;
namespace osu.Game.Tests.Beatmaps.IO
@ -50,7 +51,7 @@ namespace osu.Game.Tests.Beatmaps.IO
Beatmap beatmap;
using (var stream = new StreamReader(reader.GetStream("Soleily - Renatus (Deif) [Platter].osu")))
using (var stream = new LineBufferedReader(reader.GetStream("Soleily - Renatus (Deif) [Platter].osu")))
beatmap = Decoder.GetDecoder<Beatmap>(stream).Decode(stream);
var meta = beatmap.Metadata;

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@ -2,8 +2,8 @@
// See the LICENCE file in the repository root for full licence text.
using System.Collections.Generic;
using System.IO;
using NUnit.Framework;
using osu.Game.IO;
using osu.Game.Skinning;
using osu.Game.Tests.Resources;
using osuTK.Graphics;
@ -20,7 +20,7 @@ namespace osu.Game.Tests.Skins
var decoder = new LegacySkinDecoder();
using (var resStream = TestResources.OpenResource(hasColours ? "skin.ini" : "skin-empty.ini"))
using (var stream = new StreamReader(resStream))
using (var stream = new LineBufferedReader(resStream))
{
var comboColors = decoder.Decode(stream).ComboColours;
@ -48,7 +48,7 @@ namespace osu.Game.Tests.Skins
var decoder = new LegacySkinDecoder();
using (var resStream = TestResources.OpenResource("skin.ini"))
using (var stream = new StreamReader(resStream))
using (var stream = new LineBufferedReader(resStream))
{
var config = decoder.Decode(stream);

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@ -9,6 +9,7 @@ using osu.Framework.Graphics.Textures;
using osu.Framework.Graphics.Video;
using osu.Game.Beatmaps;
using osu.Game.Beatmaps.Formats;
using osu.Game.IO;
using osu.Game.IO.Archives;
using osu.Game.Tests.Resources;
@ -56,7 +57,7 @@ namespace osu.Game.Tests
private Beatmap createTestBeatmap()
{
using (var beatmapStream = getBeatmapStream())
using (var beatmapReader = new StreamReader(beatmapStream))
using (var beatmapReader = new LineBufferedReader(beatmapStream))
return Decoder.GetDecoder<Beatmap>(beatmapReader).Decode(beatmapReader);
}
}

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@ -20,6 +20,7 @@ using osu.Framework.Platform;
using osu.Framework.Threading;
using osu.Game.Beatmaps.Formats;
using osu.Game.Database;
using osu.Game.IO;
using osu.Game.IO.Archives;
using osu.Game.Online.API;
using osu.Game.Online.API.Requests;
@ -264,7 +265,7 @@ namespace osu.Game.Beatmaps
}
Beatmap beatmap;
using (var stream = new StreamReader(reader.GetStream(mapName)))
using (var stream = new LineBufferedReader(reader.GetStream(mapName)))
beatmap = Decoder.GetDecoder<Beatmap>(stream).Decode(stream);
return new BeatmapSetInfo
@ -287,7 +288,7 @@ namespace osu.Game.Beatmaps
{
using (var raw = reader.GetStream(name))
using (var ms = new MemoryStream()) //we need a memory stream so we can seek
using (var sr = new StreamReader(ms))
using (var sr = new LineBufferedReader(ms))
{
raw.CopyTo(ms);
ms.Position = 0;

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@ -2,7 +2,6 @@
// See the LICENCE file in the repository root for full licence text.
using System;
using System.IO;
using System.Linq;
using osu.Framework.Audio;
using osu.Framework.Audio.Track;
@ -11,6 +10,7 @@ using osu.Framework.Graphics.Video;
using osu.Framework.IO.Stores;
using osu.Framework.Logging;
using osu.Game.Beatmaps.Formats;
using osu.Game.IO;
using osu.Game.Skinning;
using osu.Game.Storyboards;
@ -33,7 +33,7 @@ namespace osu.Game.Beatmaps
{
try
{
using (var stream = new StreamReader(store.GetStream(getPathForFile(BeatmapInfo.Path))))
using (var stream = new LineBufferedReader(store.GetStream(getPathForFile(BeatmapInfo.Path))))
return Decoder.GetDecoder<Beatmap>(stream).Decode(stream);
}
catch
@ -127,7 +127,7 @@ namespace osu.Game.Beatmaps
try
{
using (var stream = new StreamReader(store.GetStream(getPathForFile(BeatmapInfo.Path))))
using (var stream = new LineBufferedReader(store.GetStream(getPathForFile(BeatmapInfo.Path))))
{
var decoder = Decoder.GetDecoder<Storyboard>(stream);
@ -136,7 +136,7 @@ namespace osu.Game.Beatmaps
storyboard = decoder.Decode(stream);
else
{
using (var secondaryStream = new StreamReader(store.GetStream(getPathForFile(BeatmapSetInfo.StoryboardFile))))
using (var secondaryStream = new LineBufferedReader(store.GetStream(getPathForFile(BeatmapSetInfo.StoryboardFile))))
storyboard = decoder.Decode(stream, secondaryStream);
}
}

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@ -5,6 +5,7 @@ using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using osu.Game.IO;
namespace osu.Game.Beatmaps.Formats
{
@ -13,15 +14,15 @@ namespace osu.Game.Beatmaps.Formats
{
protected virtual TOutput CreateTemplateObject() => new TOutput();
public TOutput Decode(StreamReader primaryStream, params StreamReader[] otherStreams)
public TOutput Decode(LineBufferedReader primaryStream, params LineBufferedReader[] otherStreams)
{
var output = CreateTemplateObject();
foreach (StreamReader stream in otherStreams.Prepend(primaryStream))
foreach (LineBufferedReader stream in otherStreams.Prepend(primaryStream))
ParseStreamInto(stream, output);
return output;
}
protected abstract void ParseStreamInto(StreamReader stream, TOutput output);
protected abstract void ParseStreamInto(LineBufferedReader stream, TOutput output);
}
public abstract class Decoder
@ -39,7 +40,7 @@ namespace osu.Game.Beatmaps.Formats
/// Retrieves a <see cref="Decoder"/> to parse a <see cref="Beatmap"/>.
/// </summary>
/// <param name="stream">A stream pointing to the <see cref="Beatmap"/>.</param>
public static Decoder<T> GetDecoder<T>(StreamReader stream)
public static Decoder<T> GetDecoder<T>(LineBufferedReader stream)
where T : new()
{
if (stream == null)

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@ -1,7 +1,7 @@
// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.
using System.IO;
using osu.Game.IO;
using osu.Game.IO.Serialization;
namespace osu.Game.Beatmaps.Formats
@ -13,11 +13,8 @@ namespace osu.Game.Beatmaps.Formats
AddDecoder<Beatmap>("{", m => new JsonBeatmapDecoder());
}
protected override void ParseStreamInto(StreamReader stream, Beatmap output)
protected override void ParseStreamInto(LineBufferedReader stream, Beatmap output)
{
stream.BaseStream.Position = 0;
stream.DiscardBufferedData();
stream.ReadToEnd().DeserializeInto(output);
foreach (var hitObject in output.HitObjects)

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@ -8,6 +8,7 @@ using osu.Framework.IO.File;
using osu.Game.Beatmaps.Timing;
using osu.Game.Rulesets.Objects.Legacy;
using osu.Game.Beatmaps.ControlPoints;
using osu.Game.IO;
namespace osu.Game.Beatmaps.Formats
{
@ -41,7 +42,7 @@ namespace osu.Game.Beatmaps.Formats
offset = FormatVersion < 5 ? 24 : 0;
}
protected override void ParseStreamInto(StreamReader stream, Beatmap beatmap)
protected override void ParseStreamInto(LineBufferedReader stream, Beatmap beatmap)
{
this.beatmap = beatmap;
this.beatmap.BeatmapInfo.BeatmapVersion = FormatVersion;

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@ -3,10 +3,10 @@
using System;
using System.Collections.Generic;
using System.IO;
using osu.Framework.Logging;
using osu.Game.Audio;
using osu.Game.Beatmaps.ControlPoints;
using osu.Game.IO;
using osuTK.Graphics;
namespace osu.Game.Beatmaps.Formats
@ -21,7 +21,7 @@ namespace osu.Game.Beatmaps.Formats
FormatVersion = version;
}
protected override void ParseStreamInto(StreamReader stream, T output)
protected override void ParseStreamInto(LineBufferedReader stream, T output)
{
Section section = Section.None;

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@ -10,6 +10,7 @@ using osuTK;
using osuTK.Graphics;
using osu.Framework.Graphics;
using osu.Framework.IO.File;
using osu.Game.IO;
using osu.Game.Storyboards;
namespace osu.Game.Beatmaps.Formats
@ -35,7 +36,7 @@ namespace osu.Game.Beatmaps.Formats
AddDecoder<Storyboard>(@"[Events]", m => new LegacyStoryboardDecoder());
}
protected override void ParseStreamInto(StreamReader stream, Storyboard storyboard)
protected override void ParseStreamInto(LineBufferedReader stream, Storyboard storyboard)
{
this.storyboard = storyboard;
base.ParseStreamInto(stream, storyboard);

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@ -12,6 +12,7 @@ using osu.Framework.Graphics;
using osu.Framework.Graphics.Textures;
using osu.Framework.IO.Stores;
using osu.Game.Audio;
using osu.Game.IO;
using osu.Game.Rulesets.Scoring;
using osuTK.Graphics;
@ -35,7 +36,7 @@ namespace osu.Game.Skinning
{
Stream stream = storage?.GetStream(filename);
if (stream != null)
using (StreamReader reader = new StreamReader(stream))
using (LineBufferedReader reader = new LineBufferedReader(stream))
Configuration = new LegacySkinDecoder().Decode(reader);
else
Configuration = new DefaultSkinConfiguration();

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@ -13,6 +13,7 @@ using osu.Framework.Graphics.Textures;
using osu.Framework.Graphics.Video;
using osu.Game.Beatmaps;
using osu.Game.Beatmaps.Formats;
using osu.Game.IO;
using osu.Game.Rulesets;
using osu.Game.Rulesets.Mods;
using osu.Game.Rulesets.Objects;
@ -142,7 +143,7 @@ namespace osu.Game.Tests.Beatmaps
private IBeatmap getBeatmap(string name)
{
using (var resStream = openResource($"{resource_namespace}.{name}.osu"))
using (var stream = new StreamReader(resStream))
using (var stream = new LineBufferedReader(resStream))
{
var decoder = Decoder.GetDecoder<Beatmap>(stream);
((LegacyBeatmapDecoder)decoder).ApplyOffsets = false;

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@ -7,6 +7,7 @@ using System.Reflection;
using NUnit.Framework;
using osu.Game.Beatmaps;
using osu.Game.Beatmaps.Formats;
using osu.Game.IO;
using osu.Game.Rulesets;
using osu.Game.Rulesets.Difficulty;
using osu.Game.Rulesets.Mods;
@ -26,7 +27,7 @@ namespace osu.Game.Tests.Beatmaps
private WorkingBeatmap getBeatmap(string name)
{
using (var resStream = openResource($"{resource_namespace}.{name}.osu"))
using (var stream = new StreamReader(resStream))
using (var stream = new LineBufferedReader(resStream))
{
var decoder = Decoder.GetDecoder<Beatmap>(stream);
((LegacyBeatmapDecoder)decoder).ApplyOffsets = false;

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@ -5,6 +5,7 @@ using System.Collections.Generic;
using System.IO;
using System.Text;
using osu.Game.Beatmaps;
using osu.Game.IO;
using osu.Game.Rulesets;
using Decoder = osu.Game.Beatmaps.Formats.Decoder;
@ -39,7 +40,7 @@ namespace osu.Game.Tests.Beatmaps
private static Beatmap createTestBeatmap()
{
using (var stream = new MemoryStream(Encoding.UTF8.GetBytes(test_beatmap_data)))
using (var reader = new StreamReader(stream))
using (var reader = new LineBufferedReader(stream))
return Decoder.GetDecoder<Beatmap>(reader).Decode(reader);
}