Razor TagHelperDescriptor Hashing (#24551)

* Razor TagHelperDescriptor Hashing and Caching

1/2 PRs for https://github.com/dotnet/aspnetcore/issues/23170

The other PR will be in aspnetcore-tooling to utilize these changes.

dotnet/razor#2307

Author: TanayParikh

src/Razor/Microsoft.AspNetCore.Razor.Language/src/BoundAttributeDescriptorComparer.cs

@@ -1,4 +1,4 @@
-// Copyright (c) .NET Foundation. All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
@@ -56,10 +56,20 @@ public virtual int GetHashCode(BoundAttributeDescriptor descriptor)
             }
 
             var hash = HashCodeCombiner.Start();
-            hash.Add(descriptor.Kind);
+            hash.Add(descriptor.Kind, StringComparer.Ordinal);
             hash.Add(descriptor.Name, StringComparer.Ordinal);
 
+            if (descriptor.BoundAttributeParameters != null)
+            {
+                for (var i = 0; i < descriptor.BoundAttributeParameters.Count; i++)
+                {
+                    hash.Add(descriptor.BoundAttributeParameters[i]);
+                }
+            }
+
+            hash.Add(descriptor.Metadata.Count);
+
             return hash.CombinedHash;
         }
     }
-}
+}

src/Razor/Microsoft.AspNetCore.Razor.Language/src/BoundAttributeParameterDescriptorComparer.cs

@@ -1,4 +1,4 @@
-// Copyright (c) .NET Foundation. All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
@@ -51,8 +51,10 @@ public virtual int GetHashCode(BoundAttributeParameterDescriptor descriptor)
             }
 
             var hash = HashCodeCombiner.Start();
-            hash.Add(descriptor.Kind);
+            hash.Add(descriptor.Kind, StringComparer.Ordinal);
             hash.Add(descriptor.Name, StringComparer.Ordinal);
+            hash.Add(descriptor.TypeName, StringComparer.Ordinal);
+            hash.Add(descriptor.Metadata?.Count);
 
             return hash.CombinedHash;
         }

src/Razor/Microsoft.AspNetCore.Razor.Language/src/DirectiveDescriptorComparer.cs

@@ -1,4 +1,4 @@
-// Copyright (c) .NET Foundation. All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
@@ -39,11 +39,19 @@ public int GetHashCode(DirectiveDescriptor descriptor)
                 throw new ArgumentNullException(nameof(descriptor));
             }
 
-            var hashCodeCombiner = HashCodeCombiner.Start();
-            hashCodeCombiner.Add(descriptor.Directive, StringComparer.Ordinal);
-            hashCodeCombiner.Add(descriptor.Kind);
+            var hash = HashCodeCombiner.Start();
+            hash.Add(descriptor.Directive, StringComparer.Ordinal);
+            hash.Add(descriptor.Kind);
 
-            return hashCodeCombiner.CombinedHash;
+            if (descriptor.Tokens != null)
+            {
+                for (var i = 0; i < descriptor.Tokens.Count; i++)
+                {
+                    hash.Add(descriptor.Tokens[i]);
+                }
+            }
+
+            return hash.CombinedHash;
         }
     }
 }

src/Razor/Microsoft.AspNetCore.Razor.Language/src/DirectiveTokenDescriptorComparer.cs

@@ -1,4 +1,4 @@
-// Copyright (c) .NET Foundation. All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;

src/Razor/Microsoft.AspNetCore.Razor.Language/src/Microsoft.AspNetCore.Razor.Language.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <Description>Razor is a markup syntax for adding server-side logic to web pages. This package contains the Razor parser and code generation infrastructure.</Description>

src/Razor/Microsoft.AspNetCore.Razor.Language/src/RequiredAttributeDescriptorComparer.cs

@@ -1,4 +1,4 @@
-// Copyright (c) .NET Foundation. All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
@@ -57,6 +57,7 @@ public virtual int GetHashCode(RequiredAttributeDescriptor descriptor)
 
             var hash = HashCodeCombiner.Start();
             hash.Add(descriptor.Name, StringComparer.Ordinal);
+            hash.Add(descriptor.Value, StringComparer.Ordinal);
 
             return hash.CombinedHash;
         }

src/Razor/Microsoft.AspNetCore.Razor.Language/src/TagHelperDescriptorComparer.cs

@@ -120,8 +120,50 @@ public virtual int GetHashCode(TagHelperDescriptor descriptor)
             hash.Add(descriptor.Kind, StringComparer.Ordinal);
             hash.Add(descriptor.AssemblyName, StringComparer.Ordinal);
             hash.Add(descriptor.Name, StringComparer.Ordinal);
+            hash.Add(descriptor.DisplayName, StringComparer.Ordinal);
+            hash.Add(descriptor.CaseSensitive ? 1 : 0);
+
+            if (descriptor.BoundAttributes != null)
+            {
+                for (var i = 0; i < descriptor.BoundAttributes.Count; i++)
+                {
+                    hash.Add(descriptor.BoundAttributes[i]);
+                }
+            }
+
+            if (descriptor.TagMatchingRules != null)
+            {
+                for (var i = 0; i < descriptor.TagMatchingRules.Count; i++)
+                {
+                    hash.Add(descriptor.TagMatchingRules[i]);
+                }
+            }
+
+            if (descriptor.AllowedChildTags != null)
+            {
+                for (var i = 0; i < descriptor.AllowedChildTags.Count; i++)
+                {
+                    hash.Add(descriptor.AllowedChildTags[i]);
+                }
+            }
+
+            if (descriptor.Diagnostics != null)
+            {
+                for (var i = 0; i < descriptor.Diagnostics.Count; i++)
+                {
+                    hash.Add(descriptor.Diagnostics[i]);
+                }
+            }
+
+            if (descriptor.Metadata != null)
+            {
+                foreach (var kvp in descriptor.Metadata)
+                {
+                    hash.Add(kvp.Value, StringComparer.Ordinal);
+                }
+            }
 
             return hash.CombinedHash;
         }
     }
-}
+}

src/Razor/Microsoft.AspNetCore.Razor.Language/src/TagMatchingRuleDescriptorComparer.cs

@@ -1,4 +1,4 @@
-// Copyright (c) .NET Foundation. All rights reserved.
+// Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
 using System;
@@ -48,8 +48,17 @@ public virtual int GetHashCode(TagMatchingRuleDescriptor rule)
 
             var hash = HashCodeCombiner.Start();
             hash.Add(rule.TagName, StringComparer.Ordinal);
+            hash.Add(rule.ParentTag, StringComparer.Ordinal);
+
+            if (rule.Attributes != null)
+            {
+                for (var i = 0; i < rule.Attributes.Count; ++i)
+                {
+                    hash.Add(rule.Attributes[i]);
+                }
+            }
 
             return hash.CombinedHash;
         }
     }
-}
+}

src/Razor/Microsoft.AspNetCore.Razor.Language/test/Microsoft.AspNetCore.Razor.Language.Test.csproj

@@ -13,15 +13,31 @@
     <BuildHelixPayload>false</BuildHelixPayload>
   </PropertyGroup>
 
-  <ItemGroup>
-    <EmbeddedResource Include="TestFiles\**\*" />
-    <None Include="xunit.runner.json" CopyToOutputDirectory="PreserveNewest" />
-  </ItemGroup>
-
   <ItemGroup>
     <Reference Include="Microsoft.AspNetCore.Razor.Language" />
+    <Reference Include="Newtonsoft.Json" Version="12.0.3" />
     <ProjectReference Include="..\..\test\Microsoft.AspNetCore.Razor.Test.Common\Microsoft.AspNetCore.Razor.Test.Common.csproj" />
     <ProjectReference Include="..\..\test\Microsoft.AspNetCore.Razor.Test.ComponentShim\Microsoft.AspNetCore.Razor.Test.ComponentShim.csproj" />
   </ItemGroup>
 
+  <ItemGroup>
+    <Compile Include="$(SharedSourceRoot)RazorShared\TagHelperDescriptorJsonConverter.cs">
+      <Link>Shared\TagHelperDescriptorJsonConverter.cs</Link>
+    </Compile>
+    <Compile Include="$(SharedSourceRoot)RazorShared\RazorDiagnosticJsonConverter.cs">
+      <Link>Shared\RazorDiagnosticJsonConverter.cs</Link>
+    </Compile>
+    <Compile Include="$(SharedSourceRoot)RazorShared\JsonReaderExtensions.cs">
+      <Link>Shared\JsonReaderExtensions.cs</Link>
+    </Compile>
+    <EmbeddedResource Include="$(SharedSourceRoot)RazorShared\taghelpers.json">
+      <Link>TestFiles\taghelpers.json</Link>
+    </EmbeddedResource>
+  </ItemGroup>
+
+  <ItemGroup>
+    <EmbeddedResource Include="TestFiles\**\*" />
+    <None Include="xunit.runner.json" CopyToOutputDirectory="PreserveNewest" />
+  </ItemGroup>
+
 </Project>