Refactor helpers to clearly distinguish Workspace dependencies

* Helper classes which depend on Microsoft.CodeAnalysis.Workspaces are
  located in the WorkspaceHelpers namespace.
* Helper classes which do not depend on Microsoft.CodeAnalysis.Workspaces
  are located in other namespaces.

Author: sharwell

StyleCop.Analyzers/StyleCop.Analyzers/DocumentationRules/FileHeaderCodeFixProvider.cs

@@ -6,7 +6,6 @@ namespace StyleCop.Analyzers.DocumentationRules
     using System;
     using System.Collections.Immutable;
     using System.Composition;
-    using System.Linq;
     using System.Text;
     using System.Threading;
     using System.Threading.Tasks;
@@ -19,6 +18,7 @@ namespace StyleCop.Analyzers.DocumentationRules
     using Microsoft.CodeAnalysis.Formatting;
     using StyleCop.Analyzers.Helpers;
     using StyleCop.Analyzers.Settings.ObjectModel;
+    using WorkspaceHelpers;
 
     /// <summary>
     /// Implements a code fix for file header diagnostics.

StyleCop.Analyzers/StyleCop.Analyzers/DocumentationRules/InheritdocCodeFixProvider.cs

@@ -14,7 +14,7 @@ namespace StyleCop.Analyzers.DocumentationRules
     using Microsoft.CodeAnalysis.CSharp;
     using Microsoft.CodeAnalysis.CSharp.Syntax;
     using Microsoft.CodeAnalysis.Formatting;
-    using SpacingRules;
+    using WorkspaceHelpers;
 
     /// <summary>
     /// Implements a code fix that will generate a documentation comment comprised of an empty

StyleCop.Analyzers/StyleCop.Analyzers/DocumentationRules/SA1609SA1610CodeFixProvider.cs

@@ -16,7 +16,7 @@ namespace StyleCop.Analyzers.DocumentationRules
     using Microsoft.CodeAnalysis.CSharp.Syntax;
     using Microsoft.CodeAnalysis.Formatting;
     using StyleCop.Analyzers.Helpers;
-    using StyleCop.Analyzers.SpacingRules;
+    using WorkspaceHelpers;
 
     /// <summary>
     /// Implements a code fix for <see cref="SA1609PropertyDocumentationMustHaveValue"/> and

StyleCop.Analyzers/StyleCop.Analyzers/DocumentationRules/SA1615SA1616CodeFixProvider.cs

@@ -17,6 +17,7 @@ namespace StyleCop.Analyzers.DocumentationRules
     using Microsoft.CodeAnalysis.Formatting;
     using Microsoft.CodeAnalysis.Simplification;
     using StyleCop.Analyzers.Helpers;
+    using WorkspaceHelpers;
 
     /// <summary>
     /// Implements a code fix for <see cref="SA1615ElementReturnValueMustBeDocumented"/> and

StyleCop.Analyzers/StyleCop.Analyzers/DocumentationRules/SA1617CodeFixProvider.cs

@@ -6,14 +6,14 @@ namespace StyleCop.Analyzers.DocumentationRules
     using System.Collections.Generic;
     using System.Collections.Immutable;
     using System.Composition;
-    using System.Linq;
     using System.Threading;
     using System.Threading.Tasks;
     using Microsoft.CodeAnalysis;
     using Microsoft.CodeAnalysis.CodeActions;
     using Microsoft.CodeAnalysis.CodeFixes;
     using Microsoft.CodeAnalysis.CSharp.Syntax;
     using StyleCop.Analyzers.Helpers;
+    using WorkspaceHelpers;
 
     /// <summary>
     /// Implements a code fix for <see cref="SA1617VoidReturnValueMustNotBeDocumented"/>.

StyleCop.Analyzers/StyleCop.Analyzers/DocumentationRules/SA1626CodeFixProvider.cs

@@ -13,6 +13,7 @@ namespace StyleCop.Analyzers.DocumentationRules
     using Microsoft.CodeAnalysis.CodeFixes;
     using Microsoft.CodeAnalysis.Text;
     using StyleCop.Analyzers.Helpers;
+    using WorkspaceHelpers;
 
     /// <summary>
     /// Implements a code fix for <see cref="SA1626CodeFixProvider"/>.

StyleCop.Analyzers/StyleCop.Analyzers/DocumentationRules/SA1642SA1643CodeFixProvider.cs

@@ -16,7 +16,7 @@ namespace StyleCop.Analyzers.DocumentationRules
     using Microsoft.CodeAnalysis.CSharp;
     using Microsoft.CodeAnalysis.CSharp.Syntax;
     using Microsoft.CodeAnalysis.Formatting;
-    using SpacingRules;
+    using WorkspaceHelpers;
 
     /// <summary>
     /// Implements a code fix for <see cref="SA1642ConstructorSummaryDocumentationMustBeginWithStandardText"/>

StyleCop.Analyzers/StyleCop.Analyzers/DocumentationRules/SA1651CodeFixProvider.cs

@@ -3,17 +3,15 @@
 
 namespace StyleCop.Analyzers.DocumentationRules
 {
-    using System;
     using System.Collections.Immutable;
     using System.Composition;
-    using System.Linq;
     using System.Threading;
     using System.Threading.Tasks;
-    using Helpers;
     using Microsoft.CodeAnalysis;
     using Microsoft.CodeAnalysis.CodeActions;
     using Microsoft.CodeAnalysis.CodeFixes;
     using Microsoft.CodeAnalysis.CSharp.Syntax;
+    using WorkspaceHelpers;
 
     /// <summary>
     /// Implements a code fix for <see cref="SA1651DoNotUsePlaceholderElements"/>.

…s/OrderingRules/ElementOrderingChecks.cs …alyzers/Helpers/ElementOrderingChecks.csStyleCop.Analyzers/StyleCop.Analyzers/OrderingRules/ElementOrderingChecks.cs renamed to StyleCop.Analyzers/StyleCop.Analyzers/Helpers/ElementOrderingChecks.cs StyleCop.Analyzers/StyleCop.Analyzers/OrderingRules/ElementOrderingChecks.cs renamed to StyleCop.Analyzers/StyleCop.Analyzers/Helpers/ElementOrderingChecks.cs

@@ -1,10 +1,10 @@
 // Copyright (c) Tunnel Vision Laboratories, LLC. All Rights Reserved.
 // Licensed under the Apache License, Version 2.0. See LICENSE in the project root for license information.
 
-namespace StyleCop.Analyzers.OrderingRules
+namespace StyleCop.Analyzers.Helpers
 {
     using Microsoft.CodeAnalysis;
-    using StyleCop.Analyzers.Helpers;
+    using OrderingRules;
 
     /// <summary>
     /// Contains information about enabled element order rules.

…yzers/OrderingRules/MemberOrderHelper.cs …p.Analyzers/Helpers/MemberOrderHelper.csStyleCop.Analyzers/StyleCop.Analyzers/OrderingRules/MemberOrderHelper.cs renamed to StyleCop.Analyzers/StyleCop.Analyzers/Helpers/MemberOrderHelper.cs StyleCop.Analyzers/StyleCop.Analyzers/OrderingRules/MemberOrderHelper.cs renamed to StyleCop.Analyzers/StyleCop.Analyzers/Helpers/MemberOrderHelper.cs

@@ -1,14 +1,13 @@
 // Copyright (c) Tunnel Vision Laboratories, LLC. All Rights Reserved.
 // Licensed under the Apache License, Version 2.0. See LICENSE in the project root for license information.
 
-namespace StyleCop.Analyzers.OrderingRules
+namespace StyleCop.Analyzers.Helpers
 {
     using System;
     using System.Collections.Immutable;
     using Microsoft.CodeAnalysis;
     using Microsoft.CodeAnalysis.CSharp;
     using Microsoft.CodeAnalysis.CSharp.Syntax;
-    using StyleCop.Analyzers.Helpers;
 
     /// <summary>
     /// Helper for dealing with member priority.