enable nullable annotations by default (#837)

This adds `#nullable disable` to all existing code (except where null is impossible like enum files), so it can be migrated incrementally.

42 files changed, 82 insertions, 2 deletions

diff --git a/src/SMAPI.Toolkit/Framework/Clients/WebApi/ModEntryModel.cs b/src/SMAPI.Toolkit/Framework/Clients/WebApi/ModEntryModel.cs
index 0115fbf3..d5ca2034 100644
--- a/src/SMAPI.Toolkit/Framework/Clients/WebApi/ModEntryModel.cs
+++ b/src/SMAPI.Toolkit/Framework/Clients/WebApi/ModEntryModel.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System;
 
 namespace StardewModdingAPI.Toolkit.Framework.Clients.WebApi
diff --git a/src/SMAPI.Toolkit/Framework/Clients/WebApi/ModEntryVersionModel.cs b/src/SMAPI.Toolkit/Framework/Clients/WebApi/ModEntryVersionModel.cs
index 188db31d..9aac7fd3 100644
--- a/src/SMAPI.Toolkit/Framework/Clients/WebApi/ModEntryVersionModel.cs
+++ b/src/SMAPI.Toolkit/Framework/Clients/WebApi/ModEntryVersionModel.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using Newtonsoft.Json;
 using StardewModdingAPI.Toolkit.Serialization.Converters;
 
diff --git a/src/SMAPI.Toolkit/Framework/Clients/WebApi/ModExtendedMetadataModel.cs b/src/SMAPI.Toolkit/Framework/Clients/WebApi/ModExtendedMetadataModel.cs
index 0fa4a74d..eb54ec78 100644
--- a/src/SMAPI.Toolkit/Framework/Clients/WebApi/ModExtendedMetadataModel.cs
+++ b/src/SMAPI.Toolkit/Framework/Clients/WebApi/ModExtendedMetadataModel.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System;
 using System.Collections.Generic;
 using System.Linq;
diff --git a/src/SMAPI.Toolkit/Framework/Clients/WebApi/ModSearchEntryModel.cs b/src/SMAPI.Toolkit/Framework/Clients/WebApi/ModSearchEntryModel.cs
index 404d4618..8fe8fa2a 100644
--- a/src/SMAPI.Toolkit/Framework/Clients/WebApi/ModSearchEntryModel.cs
+++ b/src/SMAPI.Toolkit/Framework/Clients/WebApi/ModSearchEntryModel.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System;
 
 namespace StardewModdingAPI.Toolkit.Framework.Clients.WebApi
diff --git a/src/SMAPI.Toolkit/Framework/Clients/WebApi/ModSearchModel.cs b/src/SMAPI.Toolkit/Framework/Clients/WebApi/ModSearchModel.cs
index 73698173..393391f7 100644
--- a/src/SMAPI.Toolkit/Framework/Clients/WebApi/ModSearchModel.cs
+++ b/src/SMAPI.Toolkit/Framework/Clients/WebApi/ModSearchModel.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System.Linq;
 using StardewModdingAPI.Toolkit.Utilities;
 
diff --git a/src/SMAPI.Toolkit/Framework/Clients/WebApi/WebApiClient.cs b/src/SMAPI.Toolkit/Framework/Clients/WebApi/WebApiClient.cs
index f7d26d21..56acb768 100644
--- a/src/SMAPI.Toolkit/Framework/Clients/WebApi/WebApiClient.cs
+++ b/src/SMAPI.Toolkit/Framework/Clients/WebApi/WebApiClient.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System;
 using System.Collections.Generic;
 using System.Linq;
diff --git a/src/SMAPI.Toolkit/Framework/Clients/Wiki/ChangeDescriptor.cs b/src/SMAPI.Toolkit/Framework/Clients/Wiki/ChangeDescriptor.cs
index 2ed255c8..910bf793 100644
--- a/src/SMAPI.Toolkit/Framework/Clients/Wiki/ChangeDescriptor.cs
+++ b/src/SMAPI.Toolkit/Framework/Clients/Wiki/ChangeDescriptor.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
diff --git a/src/SMAPI.Toolkit/Framework/Clients/Wiki/WikiClient.cs b/src/SMAPI.Toolkit/Framework/Clients/Wiki/WikiClient.cs
index c936bb3e..86c3bd75 100644
--- a/src/SMAPI.Toolkit/Framework/Clients/Wiki/WikiClient.cs
+++ b/src/SMAPI.Toolkit/Framework/Clients/Wiki/WikiClient.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System;
 using System.Collections.Generic;
 using System.Diagnostics.CodeAnalysis;
diff --git a/src/SMAPI.Toolkit/Framework/Clients/Wiki/WikiCompatibilityInfo.cs b/src/SMAPI.Toolkit/Framework/Clients/Wiki/WikiCompatibilityInfo.cs
index 204acd2b..30e76d04 100644
--- a/src/SMAPI.Toolkit/Framework/Clients/Wiki/WikiCompatibilityInfo.cs
+++ b/src/SMAPI.Toolkit/Framework/Clients/Wiki/WikiCompatibilityInfo.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 namespace StardewModdingAPI.Toolkit.Framework.Clients.Wiki
 {
     /// <summary>Compatibility info for a mod.</summary>
diff --git a/src/SMAPI.Toolkit/Framework/Clients/Wiki/WikiCompatibilityStatus.cs b/src/SMAPI.Toolkit/Framework/Clients/Wiki/WikiCompatibilityStatus.cs
index 5cdf489f..2c222b71 100644
--- a/src/SMAPI.Toolkit/Framework/Clients/Wiki/WikiCompatibilityStatus.cs
+++ b/src/SMAPI.Toolkit/Framework/Clients/Wiki/WikiCompatibilityStatus.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 namespace StardewModdingAPI.Toolkit.Framework.Clients.Wiki
 {
     /// <summary>The compatibility status for a mod.</summary>
diff --git a/src/SMAPI.Toolkit/Framework/Clients/Wiki/WikiDataOverrideEntry.cs b/src/SMAPI.Toolkit/Framework/Clients/Wiki/WikiDataOverrideEntry.cs
index 03c0d214..a6f5a88f 100644
--- a/src/SMAPI.Toolkit/Framework/Clients/Wiki/WikiDataOverrideEntry.cs
+++ b/src/SMAPI.Toolkit/Framework/Clients/Wiki/WikiDataOverrideEntry.cs
@@ -1,7 +1,5 @@
 using System;
 
-#nullable enable
-
 namespace StardewModdingAPI.Toolkit.Framework.Clients.Wiki
 {
     /// <summary>The data overrides to apply to matching mods.</summary>
diff --git a/src/SMAPI.Toolkit/Framework/Clients/Wiki/WikiModEntry.cs b/src/SMAPI.Toolkit/Framework/Clients/Wiki/WikiModEntry.cs
index 4e0104da..91943ff9 100644
--- a/src/SMAPI.Toolkit/Framework/Clients/Wiki/WikiModEntry.cs
+++ b/src/SMAPI.Toolkit/Framework/Clients/Wiki/WikiModEntry.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 namespace StardewModdingAPI.Toolkit.Framework.Clients.Wiki
 {
     /// <summary>A mod entry in the wiki list.</summary>
diff --git a/src/SMAPI.Toolkit/Framework/Clients/Wiki/WikiModList.cs b/src/SMAPI.Toolkit/Framework/Clients/Wiki/WikiModList.cs
index 0d614f28..1787197a 100644
--- a/src/SMAPI.Toolkit/Framework/Clients/Wiki/WikiModList.cs
+++ b/src/SMAPI.Toolkit/Framework/Clients/Wiki/WikiModList.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 namespace StardewModdingAPI.Toolkit.Framework.Clients.Wiki
 {
     /// <summary>Metadata from the wiki's mod compatibility list.</summary>
diff --git a/src/SMAPI.Toolkit/Framework/Constants.cs b/src/SMAPI.Toolkit/Framework/Constants.cs
index 55f26582..c3a787c7 100644
--- a/src/SMAPI.Toolkit/Framework/Constants.cs
+++ b/src/SMAPI.Toolkit/Framework/Constants.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 namespace StardewModdingAPI.Toolkit.Framework
 {
     /// <summary>Contains the SMAPI installer's constants and assumptions.</summary>
diff --git a/src/SMAPI.Toolkit/Framework/GameScanning/GameScanner.cs b/src/SMAPI.Toolkit/Framework/GameScanning/GameScanner.cs
index 768beba1..ac6fe411 100644
--- a/src/SMAPI.Toolkit/Framework/GameScanning/GameScanner.cs
+++ b/src/SMAPI.Toolkit/Framework/GameScanning/GameScanner.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System;
 using System.Collections.Generic;
 using System.IO;
diff --git a/src/SMAPI.Toolkit/Framework/LowLevelEnvironmentUtility.cs b/src/SMAPI.Toolkit/Framework/LowLevelEnvironmentUtility.cs
index c0332331..9998edec 100644
--- a/src/SMAPI.Toolkit/Framework/LowLevelEnvironmentUtility.cs
+++ b/src/SMAPI.Toolkit/Framework/LowLevelEnvironmentUtility.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System;
 using System.Diagnostics;
 using System.Diagnostics.CodeAnalysis;
diff --git a/src/SMAPI.Toolkit/Framework/ModData/MetadataModel.cs b/src/SMAPI.Toolkit/Framework/ModData/MetadataModel.cs
index ef6d4dd9..3fa70615 100644
--- a/src/SMAPI.Toolkit/Framework/ModData/MetadataModel.cs
+++ b/src/SMAPI.Toolkit/Framework/ModData/MetadataModel.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System.Collections.Generic;
 
 namespace StardewModdingAPI.Toolkit.Framework.ModData
diff --git a/src/SMAPI.Toolkit/Framework/ModData/ModDataField.cs b/src/SMAPI.Toolkit/Framework/ModData/ModDataField.cs
index b02be3e4..46cb81e1 100644
--- a/src/SMAPI.Toolkit/Framework/ModData/ModDataField.cs
+++ b/src/SMAPI.Toolkit/Framework/ModData/ModDataField.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System.Linq;
 
 namespace StardewModdingAPI.Toolkit.Framework.ModData
diff --git a/src/SMAPI.Toolkit/Framework/ModData/ModDataModel.cs b/src/SMAPI.Toolkit/Framework/ModData/ModDataModel.cs
index 2167d3e5..4d96a555 100644
--- a/src/SMAPI.Toolkit/Framework/ModData/ModDataModel.cs
+++ b/src/SMAPI.Toolkit/Framework/ModData/ModDataModel.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System;
 using System.Collections.Generic;
 using System.Linq;
diff --git a/src/SMAPI.Toolkit/Framework/ModData/ModDataRecord.cs b/src/SMAPI.Toolkit/Framework/ModData/ModDataRecord.cs
index 7e07ffde..4c09e1ba 100644
--- a/src/SMAPI.Toolkit/Framework/ModData/ModDataRecord.cs
+++ b/src/SMAPI.Toolkit/Framework/ModData/ModDataRecord.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System;
 using System.Collections.Generic;
 using System.Linq;
diff --git a/src/SMAPI.Toolkit/Framework/ModData/ModDataRecordVersionedFields.cs b/src/SMAPI.Toolkit/Framework/ModData/ModDataRecordVersionedFields.cs
index 5aaabd51..b599b343 100644
--- a/src/SMAPI.Toolkit/Framework/ModData/ModDataRecordVersionedFields.cs
+++ b/src/SMAPI.Toolkit/Framework/ModData/ModDataRecordVersionedFields.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 namespace StardewModdingAPI.Toolkit.Framework.ModData
 {
     /// <summary>The versioned fields from a <see cref="ModDataRecord"/> for a specific manifest.</summary>
diff --git a/src/SMAPI.Toolkit/Framework/ModData/ModDatabase.cs b/src/SMAPI.Toolkit/Framework/ModData/ModDatabase.cs
index 9bb3f558..a5237334 100644
--- a/src/SMAPI.Toolkit/Framework/ModData/ModDatabase.cs
+++ b/src/SMAPI.Toolkit/Framework/ModData/ModDatabase.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System;
 using System.Collections.Generic;
 using System.Linq;
diff --git a/src/SMAPI.Toolkit/Framework/ModScanning/ModFolder.cs b/src/SMAPI.Toolkit/Framework/ModScanning/ModFolder.cs
index 825b98e5..81d72c0b 100644
--- a/src/SMAPI.Toolkit/Framework/ModScanning/ModFolder.cs
+++ b/src/SMAPI.Toolkit/Framework/ModScanning/ModFolder.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
diff --git a/src/SMAPI.Toolkit/Framework/ModScanning/ModScanner.cs b/src/SMAPI.Toolkit/Framework/ModScanning/ModScanner.cs
index e16af3a8..4deaf19b 100644
--- a/src/SMAPI.Toolkit/Framework/ModScanning/ModScanner.cs
+++ b/src/SMAPI.Toolkit/Framework/ModScanning/ModScanner.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System;
 using System.Collections.Generic;
 using System.IO;
diff --git a/src/SMAPI.Toolkit/Framework/SemanticVersionReader.cs b/src/SMAPI.Toolkit/Framework/SemanticVersionReader.cs
index 489e1c4d..57eea2f7 100644
--- a/src/SMAPI.Toolkit/Framework/SemanticVersionReader.cs
+++ b/src/SMAPI.Toolkit/Framework/SemanticVersionReader.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 namespace StardewModdingAPI.Toolkit.Framework
 {
     /// <summary>Reads strings into a semantic version.</summary>
diff --git a/src/SMAPI.Toolkit/Framework/UpdateData/UpdateKey.cs b/src/SMAPI.Toolkit/Framework/UpdateData/UpdateKey.cs
index 077c0361..ec94ed51 100644
--- a/src/SMAPI.Toolkit/Framework/UpdateData/UpdateKey.cs
+++ b/src/SMAPI.Toolkit/Framework/UpdateData/UpdateKey.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System;
 
 namespace StardewModdingAPI.Toolkit.Framework.UpdateData
diff --git a/src/SMAPI.Toolkit/ModToolkit.cs b/src/SMAPI.Toolkit/ModToolkit.cs
index 80008df7..9ae8cd1c 100644
--- a/src/SMAPI.Toolkit/ModToolkit.cs
+++ b/src/SMAPI.Toolkit/ModToolkit.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
diff --git a/src/SMAPI.Toolkit/SemanticVersion.cs b/src/SMAPI.Toolkit/SemanticVersion.cs
index 2f3e282b..97b92555 100644
--- a/src/SMAPI.Toolkit/SemanticVersion.cs
+++ b/src/SMAPI.Toolkit/SemanticVersion.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System;
 using System.Text.RegularExpressions;
 using StardewModdingAPI.Toolkit.Framework;
diff --git a/src/SMAPI.Toolkit/SemanticVersionComparer.cs b/src/SMAPI.Toolkit/SemanticVersionComparer.cs
index 8eba2c9f..a0472f62 100644
--- a/src/SMAPI.Toolkit/SemanticVersionComparer.cs
+++ b/src/SMAPI.Toolkit/SemanticVersionComparer.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System.Collections.Generic;
 
 namespace StardewModdingAPI.Toolkit
diff --git a/src/SMAPI.Toolkit/Serialization/Converters/ManifestContentPackForConverter.cs b/src/SMAPI.Toolkit/Serialization/Converters/ManifestContentPackForConverter.cs
index 5cabe9d8..d2dc0d22 100644
--- a/src/SMAPI.Toolkit/Serialization/Converters/ManifestContentPackForConverter.cs
+++ b/src/SMAPI.Toolkit/Serialization/Converters/ManifestContentPackForConverter.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System;
 using Newtonsoft.Json;
 using StardewModdingAPI.Toolkit.Serialization.Models;
diff --git a/src/SMAPI.Toolkit/Serialization/Converters/ManifestDependencyArrayConverter.cs b/src/SMAPI.Toolkit/Serialization/Converters/ManifestDependencyArrayConverter.cs
index 7b88d6b7..2c3c2ee7 100644
--- a/src/SMAPI.Toolkit/Serialization/Converters/ManifestDependencyArrayConverter.cs
+++ b/src/SMAPI.Toolkit/Serialization/Converters/ManifestDependencyArrayConverter.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System;
 using System.Collections.Generic;
 using Newtonsoft.Json;
diff --git a/src/SMAPI.Toolkit/Serialization/Converters/SemanticVersionConverter.cs b/src/SMAPI.Toolkit/Serialization/Converters/SemanticVersionConverter.cs
index cf69104d..9205cebe 100644
--- a/src/SMAPI.Toolkit/Serialization/Converters/SemanticVersionConverter.cs
+++ b/src/SMAPI.Toolkit/Serialization/Converters/SemanticVersionConverter.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System;
 using Newtonsoft.Json;
 using Newtonsoft.Json.Linq;
diff --git a/src/SMAPI.Toolkit/Serialization/Converters/SimpleReadOnlyConverter.cs b/src/SMAPI.Toolkit/Serialization/Converters/SimpleReadOnlyConverter.cs
index ccc5158b..c923350c 100644
--- a/src/SMAPI.Toolkit/Serialization/Converters/SimpleReadOnlyConverter.cs
+++ b/src/SMAPI.Toolkit/Serialization/Converters/SimpleReadOnlyConverter.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System;
 using Newtonsoft.Json;
 using Newtonsoft.Json.Linq;
diff --git a/src/SMAPI.Toolkit/Serialization/InternalExtensions.cs b/src/SMAPI.Toolkit/Serialization/InternalExtensions.cs
index 10f88dde..1fce5f9d 100644
--- a/src/SMAPI.Toolkit/Serialization/InternalExtensions.cs
+++ b/src/SMAPI.Toolkit/Serialization/InternalExtensions.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System;
 using Newtonsoft.Json.Linq;
 
diff --git a/src/SMAPI.Toolkit/Serialization/JsonHelper.cs b/src/SMAPI.Toolkit/Serialization/JsonHelper.cs
index 91c2e9d3..9700e712 100644
--- a/src/SMAPI.Toolkit/Serialization/JsonHelper.cs
+++ b/src/SMAPI.Toolkit/Serialization/JsonHelper.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System;
 using System.Collections.Generic;
 using System.IO;
diff --git a/src/SMAPI.Toolkit/Serialization/Models/Manifest.cs b/src/SMAPI.Toolkit/Serialization/Models/Manifest.cs
index 4ad97b6d..a5dbf604 100644
--- a/src/SMAPI.Toolkit/Serialization/Models/Manifest.cs
+++ b/src/SMAPI.Toolkit/Serialization/Models/Manifest.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System;
 using System.Collections.Generic;
 using System.Runtime.Serialization;
diff --git a/src/SMAPI.Toolkit/Serialization/Models/ManifestContentPackFor.cs b/src/SMAPI.Toolkit/Serialization/Models/ManifestContentPackFor.cs
index 1eb80889..ea5f0e6c 100644
--- a/src/SMAPI.Toolkit/Serialization/Models/ManifestContentPackFor.cs
+++ b/src/SMAPI.Toolkit/Serialization/Models/ManifestContentPackFor.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 namespace StardewModdingAPI.Toolkit.Serialization.Models
 {
     /// <summary>Indicates which mod can read the content pack represented by the containing manifest.</summary>
diff --git a/src/SMAPI.Toolkit/Serialization/Models/ManifestDependency.cs b/src/SMAPI.Toolkit/Serialization/Models/ManifestDependency.cs
index 00f168f4..f52dd5ee 100644
--- a/src/SMAPI.Toolkit/Serialization/Models/ManifestDependency.cs
+++ b/src/SMAPI.Toolkit/Serialization/Models/ManifestDependency.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 namespace StardewModdingAPI.Toolkit.Serialization.Models
 {
     /// <summary>A mod dependency listed in a mod manifest.</summary>
diff --git a/src/SMAPI.Toolkit/Serialization/SParseException.cs b/src/SMAPI.Toolkit/Serialization/SParseException.cs
index 5f58b5b8..1581e027 100644
--- a/src/SMAPI.Toolkit/Serialization/SParseException.cs
+++ b/src/SMAPI.Toolkit/Serialization/SParseException.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System;
 
 namespace StardewModdingAPI.Toolkit.Serialization
diff --git a/src/SMAPI.Toolkit/Utilities/EnvironmentUtility.cs b/src/SMAPI.Toolkit/Utilities/EnvironmentUtility.cs
index 7536337a..f14678be 100644
--- a/src/SMAPI.Toolkit/Utilities/EnvironmentUtility.cs
+++ b/src/SMAPI.Toolkit/Utilities/EnvironmentUtility.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System;
 using System.Diagnostics.CodeAnalysis;
 using StardewModdingAPI.Toolkit.Framework;
diff --git a/src/SMAPI.Toolkit/Utilities/FileUtilities.cs b/src/SMAPI.Toolkit/Utilities/FileUtilities.cs
index a6bf5929..ba2d0f47 100644
--- a/src/SMAPI.Toolkit/Utilities/FileUtilities.cs
+++ b/src/SMAPI.Toolkit/Utilities/FileUtilities.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System;
 using System.IO;
 using System.Security.Cryptography;
diff --git a/src/SMAPI.Toolkit/Utilities/PathUtilities.cs b/src/SMAPI.Toolkit/Utilities/PathUtilities.cs
index 85e12bfa..9a0e2ea7 100644
--- a/src/SMAPI.Toolkit/Utilities/PathUtilities.cs
+++ b/src/SMAPI.Toolkit/Utilities/PathUtilities.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System;
 using System.Diagnostics.Contracts;
 using System.IO;