Add Pure Attributes

Author: Mafii

CompositionRoot/CompositionRoot.csproj

@@ -23,6 +23,9 @@
         <IncludeSymbols>true</IncludeSymbols>
         <SymbolPackageFormat>snupkg</SymbolPackageFormat>
     </PropertyGroup>
+    <PropertyGroup>
+        <DefineConstants>$(DefineConstants);CONTRACTS_FULL</DefineConstants>
+    </PropertyGroup>
     <ItemGroup>
         <PackageReference Include="Autofac" />
         <PackageReference Include="System.Collections.Immutable" Condition="'$(TargetFramework)' == 'netstandard2.0' Or '$(TargetFramework)' == 'netstandard2.1'" />

CompositionRoot/ModuleBuilder.cs

@@ -1,4 +1,5 @@
 using System.Collections.Immutable;
+using System.Diagnostics.Contracts;
 using Autofac;
 using Autofac.Core;
 
@@ -13,23 +14,27 @@ public ModuleBuilder()
 
         private ModuleBuilder(ImmutableList<Register> registrations)
             => _registrations = registrations;
-        }
 
+        [Pure]
         public ModuleBuilder RegisterInstance<T>(T instance)
             where T : class
             => Register(builder => builder.RegisterInstance(instance));
 
+        [Pure]
         public ModuleBuilder RegisterModule<TModule>()
             where TModule : IModule, new()
             => Register(builder => builder.RegisterModule<TModule>());
 
+        [Pure]
         public ModuleBuilder RegisterModule<TModule>(TModule module)
             where TModule : IModule
             => Register(builder => builder.RegisterModule(module));
 
+        [Pure]
         public ModuleBuilder Register(Register registrationFunction)
             => ShallowClone(_registrations.Add(registrationFunction));
 
+        [Pure]
         public IModule Build()
             => new ModuleRegistrar(_registrations);