Evolve null-checking approach in EFCore

src/EFCore/ChangeTracking/ChangeTracker.cs

@@ -43,10 +43,6 @@ public ChangeTracker(
             IModel model,
             IEntityEntryGraphIterator graphIterator)
         {
-            Check.NotNull(context, nameof(context));
-            Check.NotNull(stateManager, nameof(stateManager));
-            Check.NotNull(changeDetector, nameof(changeDetector));
-
             Context = context;
 
             _defaultQueryTrackingBehavior

src/EFCore/ChangeTracking/EntityEntry.cs

@@ -55,8 +55,6 @@ public class EntityEntry : IInfrastructure<InternalEntityEntry>
         [EntityFrameworkInternal]
         public EntityEntry(InternalEntityEntry internalEntry)
         {
-            Check.NotNull(internalEntry, nameof(internalEntry));
-
             InternalEntry = internalEntry;
         }
 

src/EFCore/ChangeTracking/EntityEntryGraphNode.cs

@@ -39,8 +39,6 @@ public EntityEntryGraphNode(
             InternalEntityEntry? sourceEntry,
             INavigationBase? inboundNavigation)
         {
-            Check.NotNull(entry, nameof(entry));
-
             _entry = entry;
             _sourceEntry = sourceEntry;
             InboundNavigation = inboundNavigation;

src/EFCore/ChangeTracking/MemberEntry.cs

@@ -5,7 +5,6 @@
 using Microsoft.EntityFrameworkCore.ChangeTracking.Internal;
 using Microsoft.EntityFrameworkCore.Infrastructure;
 using Microsoft.EntityFrameworkCore.Metadata;
-using Microsoft.EntityFrameworkCore.Utilities;
 
 namespace Microsoft.EntityFrameworkCore.ChangeTracking
 {
@@ -38,9 +37,6 @@ public abstract class MemberEntry : IInfrastructure<InternalEntityEntry>
         [EntityFrameworkInternal]
         protected MemberEntry(InternalEntityEntry internalEntry, IPropertyBase metadata)
         {
-            Check.NotNull(internalEntry, nameof(internalEntry));
-            Check.NotNull(metadata, nameof(metadata));
-
             InternalEntry = internalEntry;
             Metadata = metadata;
         }

src/EFCore/DbContextOptions.cs

@@ -8,7 +8,6 @@
 using Microsoft.EntityFrameworkCore.Diagnostics;
 using Microsoft.EntityFrameworkCore.Infrastructure;
 using Microsoft.EntityFrameworkCore.Internal;
-using Microsoft.EntityFrameworkCore.Utilities;
 
 namespace Microsoft.EntityFrameworkCore
 {
@@ -46,8 +45,6 @@ protected DbContextOptions()
         protected DbContextOptions(
             IReadOnlyDictionary<Type, IDbContextOptionsExtension> extensions)
         {
-            Check.NotNull(extensions, nameof(extensions));
-
             _extensionsMap = ImmutableSortedDictionary.Create<Type, (IDbContextOptionsExtension, int)>(TypeFullNameComparer.Instance)
                 .AddRange(extensions.Select((p, i) => new KeyValuePair<Type, (IDbContextOptionsExtension, int)>(p.Key, (p.Value, i))));
         }
@@ -62,8 +59,6 @@ protected DbContextOptions(
         protected DbContextOptions(
             ImmutableSortedDictionary<Type, (IDbContextOptionsExtension Extension, int Ordinal)> extensions)
         {
-            Check.NotNull(extensions, nameof(extensions));
-
             _extensionsMap = extensions;
         }
 

src/EFCore/DbContextOptionsBuilder.cs

@@ -638,11 +638,7 @@ public virtual DbContextOptionsBuilder ConfigureLoggingCacheTime(TimeSpan timeSp
         /// <typeparam name="TExtension">The type of extension to be added.</typeparam>
         /// <param name="extension">The extension to be added.</param>
         void IDbContextOptionsBuilderInfrastructure.AddOrUpdateExtension<TExtension>(TExtension extension)
-        {
-            Check.NotNull(extension, nameof(extension));
-
-            _options = _options.WithExtension(extension);
-        }
+            => _options = _options.WithExtension(extension);
 
         private DbContextOptionsBuilder WithOption(Func<CoreOptionsExtension, CoreOptionsExtension> withFunc)
         {

src/EFCore/DbContextOptions`.cs

@@ -5,7 +5,6 @@
 using System.Collections.Generic;
 using System.Collections.Immutable;
 using Microsoft.EntityFrameworkCore.Infrastructure;
-using Microsoft.EntityFrameworkCore.Utilities;
 
 namespace Microsoft.EntityFrameworkCore
 {
@@ -51,8 +50,6 @@ private DbContextOptions(
         /// <inheritdoc />
         public override DbContextOptions WithExtension<TExtension>(TExtension extension)
         {
-            Check.NotNull(extension, nameof(extension));
-
             var type = extension.GetType();
             var ordinal = ExtensionsMap.Count;
             if (ExtensionsMap.TryGetValue(type, out var existingValue))

src/EFCore/DbUpdateException.cs

@@ -7,7 +7,6 @@
 using System.Runtime.Serialization;
 using Microsoft.EntityFrameworkCore.ChangeTracking;
 using Microsoft.EntityFrameworkCore.Update;
-using Microsoft.EntityFrameworkCore.Utilities;
 
 namespace Microsoft.EntityFrameworkCore
 {
@@ -73,8 +72,6 @@ public DbUpdateException(
             IReadOnlyList<IUpdateEntry> entries)
             : base(message, innerException)
         {
-            Check.NotEmpty(entries, nameof(entries));
-
             _entries = entries
                 .Where(e => e.EntityState != EntityState.Unchanged)
                 .Select(e => e.ToEntityEntry()).ToList();
@@ -104,8 +101,6 @@ public DbUpdateException(
             IReadOnlyList<EntityEntry> entries)
             : base(message, innerException)
         {
-            Check.NotEmpty(entries, nameof(entries));
-
             _entries = entries;
         }
 

src/EFCore/Design/AttributeCodeFragment.cs

@@ -3,7 +3,6 @@
 
 using System;
 using System.Collections.Generic;
-using Microsoft.EntityFrameworkCore.Utilities;
 
 namespace Microsoft.EntityFrameworkCore.Design
 {
@@ -25,9 +24,6 @@ public class AttributeCodeFragment
         /// <param name="arguments">The attribute's arguments.</param>
         public AttributeCodeFragment(Type type, params object[] arguments)
         {
-            Check.NotNull(type, nameof(type));
-            Check.NotNull(arguments, nameof(arguments));
-
             Type = type;
             _arguments = new List<object>(arguments);
         }

src/EFCore/Design/DesignTimeProviderServicesAttribute.cs

@@ -31,8 +31,7 @@ public sealed class DesignTimeProviderServicesAttribute : Attribute
         ///     The name of the type that can be used to add the database providers design time services to a <see cref="ServiceCollection" />.
         ///     This type should implement <see cref="IDesignTimeServices" />.
         /// </param>
-        public DesignTimeProviderServicesAttribute(
-            string typeName)
+        public DesignTimeProviderServicesAttribute(string typeName)
         {
             Check.NotEmpty(typeName, nameof(typeName));
 

src/EFCore/Design/Internal/CSharpRuntimeAnnotationCodeGenerator.cs

@@ -6,7 +6,6 @@
 using System.Linq;
 using Microsoft.EntityFrameworkCore.Metadata;
 using Microsoft.EntityFrameworkCore.Metadata.Internal;
-using Microsoft.EntityFrameworkCore.Utilities;
 
 namespace Microsoft.EntityFrameworkCore.Design.Internal
 {
@@ -21,8 +20,6 @@ public class CSharpRuntimeAnnotationCodeGenerator : ICSharpRuntimeAnnotationCode
         /// <param name="dependencies">Parameter object containing dependencies for this service.</param>
         public CSharpRuntimeAnnotationCodeGenerator(CSharpRuntimeAnnotationCodeGeneratorDependencies dependencies)
         {
-            Check.NotNull(dependencies, nameof(dependencies));
-
             Dependencies = dependencies;
         }
 

src/EFCore/Design/Internal/CSharpRuntimeAnnotationCodeGeneratorDependencies.cs

@@ -2,7 +2,6 @@
 // The .NET Foundation licenses this file to you under the MIT license.
 
 using Microsoft.EntityFrameworkCore.Infrastructure;
-using Microsoft.EntityFrameworkCore.Utilities;
 
 namespace Microsoft.EntityFrameworkCore.Design.Internal
 {
@@ -42,8 +41,6 @@ public sealed record CSharpRuntimeAnnotationCodeGeneratorDependencies
         [EntityFrameworkInternal]
         public CSharpRuntimeAnnotationCodeGeneratorDependencies(ICSharpHelper cSharpHelper)
         {
-            Check.NotNull(cSharpHelper, nameof(cSharpHelper));
-
             CSharpHelper = cSharpHelper;
         }
 

src/EFCore/Design/MethodCallCodeFragment.cs

@@ -5,7 +5,6 @@
 using System.Collections.Generic;
 using System.Reflection;
 using Microsoft.EntityFrameworkCore.Diagnostics;
-using Microsoft.EntityFrameworkCore.Utilities;
 
 namespace Microsoft.EntityFrameworkCore.Design
 {
@@ -32,9 +31,6 @@ public class MethodCallCodeFragment
         /// <param name="arguments">The method call's arguments. Can be <see cref="NestedClosureCodeFragment" />.</param>
         public MethodCallCodeFragment(MethodInfo methodInfo, params object?[] arguments)
         {
-            Check.NotNull(methodInfo, nameof(methodInfo));
-            Check.NotNull(arguments, nameof(arguments));
-
             var parameterLength = methodInfo.GetParameters().Length;
             if (methodInfo.IsStatic)
             {
@@ -60,9 +56,6 @@ public MethodCallCodeFragment(MethodInfo methodInfo, params object?[] arguments)
         [Obsolete("Use the overload accepting a MethodInfo")]
         public MethodCallCodeFragment(string method, params object?[] arguments)
         {
-            Check.NotEmpty(method, nameof(method));
-            Check.NotNull(arguments, nameof(arguments));
-
             _method = method;
             _arguments = new List<object?>(arguments);
         }
@@ -87,8 +80,6 @@ private MethodCallCodeFragment(
             object?[] arguments)
             : this(methodInfo, arguments)
         {
-            Check.NotNull(chainedCall, nameof(chainedCall));
-
             ChainedCall = chainedCall;
         }
 
@@ -105,8 +96,6 @@ public MethodCallCodeFragment(
             MethodCallCodeFragment chainedCall)
             : this(method, arguments)
         {
-            Check.NotNull(chainedCall, nameof(chainedCall));
-
             ChainedCall = chainedCall;
         }
 

src/EFCore/Design/NestedClosureCodeFragment.cs

@@ -2,7 +2,6 @@
 // The .NET Foundation licenses this file to you under the MIT license.
 
 using System.Collections.Generic;
-using Microsoft.EntityFrameworkCore.Utilities;
 
 namespace Microsoft.EntityFrameworkCore.Design
 {
@@ -22,9 +21,6 @@ public class NestedClosureCodeFragment
         /// <param name="methodCall">The method call used as the body of the nested closure.</param>
         public NestedClosureCodeFragment(string parameter, MethodCallCodeFragment methodCall)
         {
-            Check.NotEmpty(parameter, nameof(parameter));
-            Check.NotNull(methodCall, nameof(methodCall));
-
             Parameter = parameter;
             MethodCalls = new List<MethodCallCodeFragment> { methodCall };
         }
@@ -36,9 +32,6 @@ public NestedClosureCodeFragment(string parameter, MethodCallCodeFragment method
         /// <param name="methodCalls">The list of method calls used as the body of the nested closure.</param>
         public NestedClosureCodeFragment(string parameter, IReadOnlyList<MethodCallCodeFragment> methodCalls)
         {
-            Check.NotEmpty(parameter, nameof(parameter));
-            Check.NotEmpty(methodCalls, nameof(methodCalls));
-
             Parameter = parameter;
             MethodCalls = methodCalls;
         }

src/EFCore/Diagnostics/CascadeDeleteEventData.cs

@@ -4,7 +4,6 @@
 using System;
 using System.Diagnostics;
 using Microsoft.EntityFrameworkCore.ChangeTracking;
-using Microsoft.EntityFrameworkCore.Utilities;
 
 namespace Microsoft.EntityFrameworkCore.Diagnostics
 {
@@ -33,8 +32,6 @@ public CascadeDeleteEventData(
             EntityState state)
             : base(eventDefinition, messageGenerator, entityEntry)
         {
-            Check.NotNull(parentEntry, nameof(parentEntry));
-
             ParentEntityEntry = parentEntry;
             State = state;
         }

src/EFCore/Diagnostics/CascadeDeleteOrphanEventData.cs

@@ -5,7 +5,6 @@
 using System.Diagnostics;
 using Microsoft.EntityFrameworkCore.ChangeTracking;
 using Microsoft.EntityFrameworkCore.Metadata;
-using Microsoft.EntityFrameworkCore.Utilities;
 
 namespace Microsoft.EntityFrameworkCore.Diagnostics
 {
@@ -34,8 +33,6 @@ public CascadeDeleteOrphanEventData(
             EntityState state)
             : base(eventDefinition, messageGenerator, entityEntry)
         {
-            Check.NotNull(parentEntityTypes, nameof(parentEntityTypes));
-
             ParentEntityType = parentEntityTypes;
             State = state;
         }

src/EFCore/Diagnostics/CollectionChangedEventData.cs

@@ -6,7 +6,6 @@
 using System.Diagnostics;
 using Microsoft.EntityFrameworkCore.ChangeTracking;
 using Microsoft.EntityFrameworkCore.Metadata;
-using Microsoft.EntityFrameworkCore.Utilities;
 
 namespace Microsoft.EntityFrameworkCore.Diagnostics
 {
@@ -37,10 +36,6 @@ public CollectionChangedEventData(
             IEnumerable<object> removed)
             : base(eventDefinition, messageGenerator, navigation)
         {
-            Check.NotNull(entityEntry, nameof(entityEntry));
-            Check.NotNull(added, nameof(added));
-            Check.NotNull(removed, nameof(removed));
-
             EntityEntry = entityEntry;
             Added = added;
             Removed = removed;

src/EFCore/Diagnostics/EntityEntryEventData.cs

@@ -4,7 +4,6 @@
 using System;
 using System.Diagnostics;
 using Microsoft.EntityFrameworkCore.ChangeTracking;
-using Microsoft.EntityFrameworkCore.Utilities;
 
 namespace Microsoft.EntityFrameworkCore.Diagnostics
 {
@@ -29,8 +28,6 @@ public EntityEntryEventData(
             EntityEntry entityEntry)
             : base(eventDefinition, messageGenerator)
         {
-            Check.NotNull(entityEntry, nameof(entityEntry));
-
             EntityEntry = entityEntry;
         }
 

src/EFCore/Diagnostics/EventDefinition.cs

@@ -2,7 +2,6 @@
 // The .NET Foundation licenses this file to you under the MIT license.
 
 using System;
-using Microsoft.EntityFrameworkCore.Utilities;
 using Microsoft.Extensions.Logging;
 
 namespace Microsoft.EntityFrameworkCore.Diagnostics
@@ -37,8 +36,6 @@ public EventDefinition(
             Func<LogLevel, Action<ILogger, Exception?>> logActionFunc)
             : base(loggingOptions, eventId, level, eventIdCode)
         {
-            Check.NotNull(logActionFunc, nameof(logActionFunc));
-
             _logAction = logActionFunc(Level);
         }
 

src/EFCore/Diagnostics/EventDefinitionBase.cs

@@ -3,7 +3,6 @@
 
 using System;
 using System.Diagnostics;
-using Microsoft.EntityFrameworkCore.Utilities;
 using Microsoft.Extensions.Logging;
 
 namespace Microsoft.EntityFrameworkCore.Diagnostics
@@ -32,9 +31,6 @@ protected EventDefinitionBase(
             LogLevel level,
             string eventIdCode)
         {
-            Check.NotNull(loggingOptions, nameof(loggingOptions));
-            Check.NotEmpty(eventIdCode, nameof(eventIdCode));
-
             EventId = eventId;
             EventIdCode = eventIdCode;
 

src/EFCore/Diagnostics/EventDefinition`.cs

@@ -2,7 +2,6 @@
 // The .NET Foundation licenses this file to you under the MIT license.
 
 using System;
-using Microsoft.EntityFrameworkCore.Utilities;
 using Microsoft.Extensions.Logging;
 
 namespace Microsoft.EntityFrameworkCore.Diagnostics
@@ -37,8 +36,6 @@ public EventDefinition(
             Func<LogLevel, Action<ILogger, TParam, Exception?>> logActionFunc)
             : base(loggingOptions, eventId, level, eventIdCode)
         {
-            Check.NotNull(logActionFunc, nameof(logActionFunc));
-
             _logAction = logActionFunc(Level);
         }