Modify tag helper infrastructure to configure case sensitivity (dotnet/aspnetcore-tooling#793)

* Modify tag helper infrastructure to configure case sensitivity

* Cleanup and added more tests

* More cleanup and added necessary diagnostics

* More feedback

* Added more tests
\n\nCommit migrated from 20b8286751

src/Razor/Microsoft.AspNetCore.Mvc.Razor.Extensions.Version1_X/test/ViewComponentTagHelperDescriptorFactoryTest.cs

@@ -52,7 +52,7 @@ namespace Microsoft.AspNetCore.Mvc.Razor.Extensions.Version1_X
             var descriptor = factory.CreateDescriptor(viewComponent);
 
             // Assert
-            Assert.Equal(expectedDescriptor, descriptor, TagHelperDescriptorComparer.CaseSensitive);
+            Assert.Equal(expectedDescriptor, descriptor, TagHelperDescriptorComparer.Default);
         }
 
         [Fact]
@@ -101,7 +101,7 @@ namespace Microsoft.AspNetCore.Mvc.Razor.Extensions.Version1_X
             var descriptor = factory.CreateDescriptor(viewComponent);
 
             // Assert
-            Assert.Equal(expectedDescriptor, descriptor, TagHelperDescriptorComparer.CaseSensitive);
+            Assert.Equal(expectedDescriptor, descriptor, TagHelperDescriptorComparer.Default);
         }
 
         [Fact]
@@ -142,7 +142,7 @@ namespace Microsoft.AspNetCore.Mvc.Razor.Extensions.Version1_X
             var descriptor = factory.CreateDescriptor(viewComponent);
 
             // Assert
-            Assert.Equal(expectedDescriptor, descriptor, TagHelperDescriptorComparer.CaseSensitive);
+            Assert.Equal(expectedDescriptor, descriptor, TagHelperDescriptorComparer.Default);
         }
 
         [Fact]

src/Razor/Microsoft.AspNetCore.Mvc.Razor.Extensions.Version1_X/test/ViewComponentTagHelperDescriptorProviderTest.cs

@@ -65,7 +65,7 @@ namespace Microsoft.AspNetCore.Mvc.Razor.Extensions.Version1_X
             provider.Execute(context);
 
             // Assert
-            Assert.Single(context.Results, d => TagHelperDescriptorComparer.CaseSensitive.Equals(d, expectedDescriptor));
+            Assert.Single(context.Results, d => TagHelperDescriptorComparer.Default.Equals(d, expectedDescriptor));
         }
     }
 }

src/Razor/Microsoft.AspNetCore.Mvc.Razor.Extensions.Version2_X/test/ViewComponentTagHelperDescriptorFactoryTest.cs

@@ -52,7 +52,7 @@ namespace Microsoft.AspNetCore.Mvc.Razor.Extensions.Version2_X
             var descriptor = factory.CreateDescriptor(viewComponent);
 
             // Assert
-            Assert.Equal(expectedDescriptor, descriptor, TagHelperDescriptorComparer.CaseSensitive);
+            Assert.Equal(expectedDescriptor, descriptor, TagHelperDescriptorComparer.Default);
         }
 
         [Fact]
@@ -101,7 +101,7 @@ namespace Microsoft.AspNetCore.Mvc.Razor.Extensions.Version2_X
             var descriptor = factory.CreateDescriptor(viewComponent);
 
             // Assert
-            Assert.Equal(expectedDescriptor, descriptor, TagHelperDescriptorComparer.CaseSensitive);
+            Assert.Equal(expectedDescriptor, descriptor, TagHelperDescriptorComparer.Default);
         }
 
         [Fact]
@@ -142,7 +142,7 @@ namespace Microsoft.AspNetCore.Mvc.Razor.Extensions.Version2_X
             var descriptor = factory.CreateDescriptor(viewComponent);
 
             // Assert
-            Assert.Equal(expectedDescriptor, descriptor, TagHelperDescriptorComparer.CaseSensitive);
+            Assert.Equal(expectedDescriptor, descriptor, TagHelperDescriptorComparer.Default);
         }
 
         [Fact]
@@ -184,7 +184,7 @@ namespace Microsoft.AspNetCore.Mvc.Razor.Extensions.Version2_X
             var descriptor = factory.CreateDescriptor(viewComponent);
 
             // Assert
-            Assert.Equal(expectedDescriptor, descriptor, TagHelperDescriptorComparer.CaseSensitive);
+            Assert.Equal(expectedDescriptor, descriptor, TagHelperDescriptorComparer.Default);
         }
 
         [Fact]
@@ -210,7 +210,7 @@ namespace Microsoft.AspNetCore.Mvc.Razor.Extensions.Version2_X
             var descriptor = factory.CreateDescriptor(viewComponent);
 
             // Assert
-            Assert.Equal(expectedDescriptor, descriptor, TagHelperDescriptorComparer.CaseSensitive);
+            Assert.Equal(expectedDescriptor, descriptor, TagHelperDescriptorComparer.Default);
         }
 
         [Fact]

src/Razor/Microsoft.AspNetCore.Mvc.Razor.Extensions.Version2_X/test/ViewComponentTagHelperDescriptorProviderTest.cs

@@ -66,7 +66,7 @@ namespace Microsoft.AspNetCore.Mvc.Razor.Extensions.Version2_X
             provider.Execute(context);
 
             // Assert
-            Assert.Single(context.Results, d => TagHelperDescriptorComparer.CaseSensitive.Equals(d, expectedDescriptor));
+            Assert.Single(context.Results, d => TagHelperDescriptorComparer.Default.Equals(d, expectedDescriptor));
         }
     }
 }

src/Razor/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/ViewComponentTagHelperDescriptorFactoryTest.cs

@@ -52,7 +52,7 @@ namespace Microsoft.AspNetCore.Mvc.Razor.Extensions
             var descriptor = factory.CreateDescriptor(viewComponent);
 
             // Assert
-            Assert.Equal(expectedDescriptor, descriptor, TagHelperDescriptorComparer.CaseSensitive);
+            Assert.Equal(expectedDescriptor, descriptor, TagHelperDescriptorComparer.Default);
         }
 
         [Fact]
@@ -101,7 +101,7 @@ namespace Microsoft.AspNetCore.Mvc.Razor.Extensions
             var descriptor = factory.CreateDescriptor(viewComponent);
 
             // Assert
-            Assert.Equal(expectedDescriptor, descriptor, TagHelperDescriptorComparer.CaseSensitive);
+            Assert.Equal(expectedDescriptor, descriptor, TagHelperDescriptorComparer.Default);
         }
 
         [Fact]
@@ -142,7 +142,7 @@ namespace Microsoft.AspNetCore.Mvc.Razor.Extensions
             var descriptor = factory.CreateDescriptor(viewComponent);
 
             // Assert
-            Assert.Equal(expectedDescriptor, descriptor, TagHelperDescriptorComparer.CaseSensitive);
+            Assert.Equal(expectedDescriptor, descriptor, TagHelperDescriptorComparer.Default);
         }
 
         [Fact]
@@ -184,7 +184,7 @@ namespace Microsoft.AspNetCore.Mvc.Razor.Extensions
             var descriptor = factory.CreateDescriptor(viewComponent);
 
             // Assert
-            Assert.Equal(expectedDescriptor, descriptor, TagHelperDescriptorComparer.CaseSensitive);
+            Assert.Equal(expectedDescriptor, descriptor, TagHelperDescriptorComparer.Default);
         }
 
         [Fact]
@@ -210,7 +210,7 @@ namespace Microsoft.AspNetCore.Mvc.Razor.Extensions
             var descriptor = factory.CreateDescriptor(viewComponent);
 
             // Assert
-            Assert.Equal(expectedDescriptor, descriptor, TagHelperDescriptorComparer.CaseSensitive);
+            Assert.Equal(expectedDescriptor, descriptor, TagHelperDescriptorComparer.Default);
         }
 
         [Fact]

src/Razor/Microsoft.AspNetCore.Mvc.Razor.Extensions/test/ViewComponentTagHelperDescriptorProviderTest.cs

@@ -1,9 +1,6 @@
 // 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.IO;
-using System.Linq;
-using System.Reflection;
 using Microsoft.AspNetCore.Razor.Language;
 using Microsoft.CodeAnalysis;
 using Microsoft.CodeAnalysis.CSharp;
@@ -66,7 +63,7 @@ namespace Microsoft.AspNetCore.Mvc.Razor.Extensions
             provider.Execute(context);
 
             // Assert
-            Assert.Single(context.Results, d => TagHelperDescriptorComparer.CaseSensitive.Equals(d, expectedDescriptor));
+            Assert.Single(context.Results, d => TagHelperDescriptorComparer.Default.Equals(d, expectedDescriptor));
         }
     }
 }

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

@@ -3,7 +3,6 @@
 
 using System;
 using System.Collections.Generic;
-using System.Linq;
 using Microsoft.Extensions.Internal;
 
 namespace Microsoft.AspNetCore.Razor.Language
@@ -16,27 +15,8 @@ namespace Microsoft.AspNetCore.Razor.Language
         public static readonly AllowedChildTagDescriptorComparer Default =
             new AllowedChildTagDescriptorComparer();
 
-        /// <summary>
+        private AllowedChildTagDescriptorComparer()
-        /// A default instance of the <see cref="AllowedChildTagDescriptorComparer"/> that does case-sensitive comparison.
-        /// </summary>
-        internal static readonly AllowedChildTagDescriptorComparer CaseSensitive =
-            new AllowedChildTagDescriptorComparer(caseSensitive: true);
-
-        private readonly StringComparer _stringComparer;
-        private readonly StringComparison _stringComparison;
-
-        private AllowedChildTagDescriptorComparer(bool caseSensitive = false)
         {
-            if (caseSensitive)
-            {
-                _stringComparer = StringComparer.Ordinal;
-                _stringComparison = StringComparison.Ordinal;
-            }
-            else
-            {
-                _stringComparer = StringComparer.OrdinalIgnoreCase;
-                _stringComparison = StringComparison.OrdinalIgnoreCase;
-            }
         }
 
         /// <inheritdoc />
@@ -55,7 +35,7 @@ namespace Microsoft.AspNetCore.Razor.Language
             }
 
             return
-                string.Equals(descriptorX.Name, descriptorY.Name, _stringComparison) &&
+                string.Equals(descriptorX.Name, descriptorY.Name, StringComparison.Ordinal) &&
                 string.Equals(descriptorX.DisplayName, descriptorY.DisplayName, StringComparison.Ordinal);
         }
 
@@ -63,7 +43,7 @@ namespace Microsoft.AspNetCore.Razor.Language
         public virtual int GetHashCode(AllowedChildTagDescriptor descriptor)
         {
             var hash = HashCodeCombiner.Start();
-            hash.Add(descriptor.Name, _stringComparer);
+            hash.Add(descriptor.Name, StringComparer.Ordinal);
 
             return hash.CombinedHash;
         }

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

@@ -43,6 +43,8 @@ namespace Microsoft.AspNetCore.Razor.Language
 
         public string DisplayName { get; protected set; }
 
+        public bool CaseSensitive { get; protected set; }
+
         public IReadOnlyList<RazorDiagnostic> Diagnostics { get; protected set; }
 
         public IReadOnlyDictionary<string, string> Metadata { get; protected set; }

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

@@ -15,27 +15,8 @@ namespace Microsoft.AspNetCore.Razor.Language
         /// </summary>
         public static readonly BoundAttributeDescriptorComparer Default = new BoundAttributeDescriptorComparer();
 
-        /// <summary>
+        private BoundAttributeDescriptorComparer()
-        /// A default instance of the <see cref="BoundAttributeDescriptorComparer"/> that does case-sensitive comparison.
-        /// </summary>
-        internal static readonly BoundAttributeDescriptorComparer CaseSensitive =
-            new BoundAttributeDescriptorComparer(caseSensitive: true);
-
-        private readonly StringComparer _stringComparer;
-        private readonly StringComparison _stringComparison;
-
-        private BoundAttributeDescriptorComparer(bool caseSensitive = false)
         {
-            if (caseSensitive)
-            {
-                _stringComparer = StringComparer.Ordinal;
-                _stringComparison = StringComparison.Ordinal;
-            }
-            else
-            {
-                _stringComparer = StringComparer.OrdinalIgnoreCase;
-                _stringComparison = StringComparison.OrdinalIgnoreCase;
-            }
         }
 
         public virtual bool Equals(BoundAttributeDescriptor descriptorX, BoundAttributeDescriptor descriptorY)
@@ -55,8 +36,9 @@ namespace Microsoft.AspNetCore.Razor.Language
                 descriptorX.IsIndexerStringProperty == descriptorY.IsIndexerStringProperty &&
                 descriptorX.IsEnum == descriptorY.IsEnum &&
                 descriptorX.HasIndexer == descriptorY.HasIndexer &&
-                string.Equals(descriptorX.Name, descriptorY.Name, _stringComparison) &&
+                descriptorX.CaseSensitive == descriptorY.CaseSensitive &&
-                string.Equals(descriptorX.IndexerNamePrefix, descriptorY.IndexerNamePrefix, _stringComparison) &&
+                string.Equals(descriptorX.Name, descriptorY.Name, StringComparison.Ordinal) &&
+                string.Equals(descriptorX.IndexerNamePrefix, descriptorY.IndexerNamePrefix, StringComparison.Ordinal) &&
                 string.Equals(descriptorX.TypeName, descriptorY.TypeName, StringComparison.Ordinal) &&
                 string.Equals(descriptorX.IndexerTypeName, descriptorY.IndexerTypeName, StringComparison.Ordinal) &&
                 string.Equals(descriptorX.Documentation, descriptorY.Documentation, StringComparison.Ordinal) &&
@@ -75,7 +57,7 @@ namespace Microsoft.AspNetCore.Razor.Language
 
             var hash = HashCodeCombiner.Start();
             hash.Add(descriptor.Kind);
-            hash.Add(descriptor.Name, _stringComparer);
+            hash.Add(descriptor.Name, StringComparer.Ordinal);
 
             return hash.CombinedHash;
         }

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

@@ -30,6 +30,8 @@ namespace Microsoft.AspNetCore.Razor.Language
 
         public string DisplayName { get; protected set; }
 
+        public bool CaseSensitive { get; protected set; }
+
         public IReadOnlyList<RazorDiagnostic> Diagnostics { get; protected set; }
 
         public IReadOnlyDictionary<string, string> Metadata { get; protected set; }

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

@@ -15,27 +15,8 @@ namespace Microsoft.AspNetCore.Razor.Language
         /// </summary>
         public static readonly BoundAttributeParameterDescriptorComparer Default = new BoundAttributeParameterDescriptorComparer();
 
-        /// <summary>
+        private BoundAttributeParameterDescriptorComparer()
-        /// A default instance of the <see cref="BoundAttributeParameterDescriptorComparer"/> that does case-sensitive comparison.
-        /// </summary>
-        internal static readonly BoundAttributeParameterDescriptorComparer CaseSensitive =
-            new BoundAttributeParameterDescriptorComparer(caseSensitive: true);
-
-        private readonly StringComparer _stringComparer;
-        private readonly StringComparison _stringComparison;
-
-        private BoundAttributeParameterDescriptorComparer(bool caseSensitive = false)
         {
-            if (caseSensitive)
-            {
-                _stringComparer = StringComparer.Ordinal;
-                _stringComparison = StringComparison.Ordinal;
-            }
-            else
-            {
-                _stringComparer = StringComparer.OrdinalIgnoreCase;
-                _stringComparison = StringComparison.OrdinalIgnoreCase;
-            }
         }
 
         public virtual bool Equals(BoundAttributeParameterDescriptor descriptorX, BoundAttributeParameterDescriptor descriptorY)
@@ -53,7 +34,7 @@ namespace Microsoft.AspNetCore.Razor.Language
             return
                 string.Equals(descriptorX.Kind, descriptorY.Kind, StringComparison.Ordinal) &&
                 descriptorX.IsEnum == descriptorY.IsEnum &&
-                string.Equals(descriptorX.Name, descriptorY.Name, _stringComparison) &&
+                string.Equals(descriptorX.Name, descriptorY.Name, StringComparison.Ordinal) &&
                 string.Equals(descriptorX.TypeName, descriptorY.TypeName, StringComparison.Ordinal) &&
                 string.Equals(descriptorX.Documentation, descriptorY.Documentation, StringComparison.Ordinal) &&
                 string.Equals(descriptorX.DisplayName, descriptorY.DisplayName, StringComparison.Ordinal) &&
@@ -71,7 +52,7 @@ namespace Microsoft.AspNetCore.Razor.Language
 
             var hash = HashCodeCombiner.Start();
             hash.Add(descriptor.Kind);
-            hash.Add(descriptor.Name, _stringComparer);
+            hash.Add(descriptor.Name, StringComparer.Ordinal);
 
             return hash.CombinedHash;
         }

src/Razor/Microsoft.AspNetCore.Razor.Language/src/Components/ComponentDiagnosticFactory.cs

@@ -421,5 +421,48 @@ namespace Microsoft.AspNetCore.Razor.Language.Components
         {
             return RazorDiagnostic.Create(RefSuppressFieldRequiredForGeneric, source ?? SourceSpan.Undefined);
         }
+
+        public static readonly RazorDiagnosticDescriptor ComponentNamesCannotStartWithLowerCase =
+            new RazorDiagnosticDescriptor(
+                $"{DiagnosticPrefix}10013",
+                () => "Component '{0}' starts with a lowercase character. Component names cannot start with a lowercase character.",
+                RazorDiagnosticSeverity.Error);
+
+        public static RazorDiagnostic Create_ComponentNamesCannotStartWithLowerCase(string componentName, SourceSpan? source = null)
+        {
+            return RazorDiagnostic.Create(
+                ComponentNamesCannotStartWithLowerCase,
+                source ?? SourceSpan.Undefined,
+                componentName);
+        }
+
+        public static readonly RazorDiagnosticDescriptor UnexpectedMarkupElement =
+            new RazorDiagnosticDescriptor(
+                $"{DiagnosticPrefix}10014",
+                () => "Found markup element with unexpected name '{0}'. If this is intended to be a component, add a @using directive for its namespace.",
+                RazorDiagnosticSeverity.Warning);
+
+        public static RazorDiagnostic Create_UnexpectedMarkupElement(string elementName, SourceSpan? source = null)
+        {
+            return RazorDiagnostic.Create(
+                UnexpectedMarkupElement,
+                source ?? SourceSpan.Undefined,
+                elementName);
+        }
+
+        public static readonly RazorDiagnosticDescriptor InconsistentStartAndEndTagName =
+            new RazorDiagnosticDescriptor(
+                $"{DiagnosticPrefix}10015",
+                () => "The start tag name '{0}' does not match the end tag name '{1}'. Components must have matching start and end tag names (case-sensitive).",
+                RazorDiagnosticSeverity.Error);
+
+        public static RazorDiagnostic Create_InconsistentStartAndEndTagName(string startTagName, string endTagName, SourceSpan? source = null)
+        {
+            return RazorDiagnostic.Create(
+                InconsistentStartAndEndTagName,
+                source ?? SourceSpan.Undefined,
+                startTagName,
+                endTagName);
+        }
     }
 }

src/Razor/Microsoft.AspNetCore.Razor.Language/src/Components/ComponentDocumentClassifierPass.cs

@@ -64,6 +64,14 @@ namespace Microsoft.AspNetCore.Razor.Language.Components
                 computedClass = $"AspNetCore_{checksum}";
             }
 
+            var documentNode = codeDocument.GetDocumentIntermediateNode();
+            if (char.IsLower(computedClass, 0))
+            {
+                // We don't allow component names to start with a lowercase character.
+                documentNode.Diagnostics.Add(
+                    ComponentDiagnosticFactory.Create_ComponentNamesCannotStartWithLowerCase(computedClass, documentNode.Source));
+            }
+
             if (MangleClassNames)
             {
                 computedClass = ComponentMetadata.MangleClassName(computedClass);
@@ -91,7 +99,6 @@ namespace Microsoft.AspNetCore.Razor.Language.Components
             {
                 @class.BaseType = ComponentsApi.ComponentBase.FullTypeName;
 
-                var documentNode = codeDocument.GetDocumentIntermediateNode();
                 var typeParamReferences = documentNode.FindDirectiveReferences(ComponentTypeParamDirective.Directive);
                 for (var i = 0; i < typeParamReferences.Count; i++)
                 {

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

@@ -17,6 +17,7 @@ namespace Microsoft.AspNetCore.Razor.Language
             string indexerTypeName,
             string documentation,
             string displayName,
+            bool caseSensitive,
             BoundAttributeParameterDescriptor[] parameterDescriptors,
             Dictionary<string, string> metadata,
             RazorDiagnostic[] diagnostics) 
@@ -30,6 +31,7 @@ namespace Microsoft.AspNetCore.Razor.Language
             IndexerTypeName = indexerTypeName;
             Documentation = documentation;
             DisplayName = displayName;
+            CaseSensitive = caseSensitive;
             BoundAttributeParameters = parameterDescriptors;
 
             Metadata = metadata;

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

@@ -74,6 +74,8 @@ namespace Microsoft.AspNetCore.Razor.Language
             }
         }
 
+        internal bool CaseSensitive => _parent.CaseSensitive;
+
         public override void BindAttributeParameter(Action<BoundAttributeParameterDescriptorBuilder> configure)
         {
             if (configure == null)
@@ -101,7 +103,7 @@ namespace Microsoft.AspNetCore.Razor.Language
             if (_attributeParameterBuilders != null)
             {
                 // Attribute parameters are case-sensitive.
-                var parameterset = new HashSet<BoundAttributeParameterDescriptor>(BoundAttributeParameterDescriptorComparer.CaseSensitive);
+                var parameterset = new HashSet<BoundAttributeParameterDescriptor>(BoundAttributeParameterDescriptorComparer.Default);
                 for (var i = 0; i < _attributeParameterBuilders.Count; i++)
                 {
                     parameterset.Add(_attributeParameterBuilders[i].Build());
@@ -120,6 +122,7 @@ namespace Microsoft.AspNetCore.Razor.Language
                 IndexerValueTypeName,
                 Documentation,
                 GetDisplayName(),
+                CaseSensitive,
                 parameters,
                 new Dictionary<string, string>(Metadata),
                 diagnostics.ToArray());

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

@@ -14,6 +14,7 @@ namespace Microsoft.AspNetCore.Razor.Language
             bool isEnum,
             string documentation,
             string displayName,
+            bool caseSensitive,
             Dictionary<string, string> metadata,
             RazorDiagnostic[] diagnostics)
             : base(kind)
@@ -23,6 +24,7 @@ namespace Microsoft.AspNetCore.Razor.Language
             IsEnum = isEnum;
             Documentation = documentation;
             DisplayName = displayName;
+            CaseSensitive = caseSensitive;
 
             Metadata = metadata;
             Diagnostics = diagnostics;

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

@@ -1,7 +1,6 @@
 // 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;
 using System.Collections.Generic;
 using System.Linq;
 
@@ -48,6 +47,8 @@ namespace Microsoft.AspNetCore.Razor.Language
             }
         }
 
+        internal bool CaseSensitive => _parent.CaseSensitive;
+
         public BoundAttributeParameterDescriptor Build()
         {
             var validationDiagnostics = Validate();
@@ -63,6 +64,7 @@ namespace Microsoft.AspNetCore.Razor.Language
                 IsEnum,
                 Documentation,
                 GetDisplayName(),
+                CaseSensitive,
                 new Dictionary<string, string>(Metadata),
                 diagnostics.ToArray());
 

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

@@ -1162,7 +1162,7 @@ namespace Microsoft.AspNetCore.Razor.Language
                     Source = BuildSourceSpanFromNode(node),
 
                     // Could be empty while the tag is being typed in.
-                    TagName = node.StartTag?.GetTagNameWithOptionalBang() ?? node.EndTag?.GetTagNameWithOptionalBang() ?? string.Empty,
+                    TagName = node.StartTag?.Name?.Content ?? node.EndTag?.Name?.Content ?? string.Empty,
                 };
 
                 if (node.StartTag != null && node.EndTag != null && node.StartTag.IsVoidElement())
@@ -1184,6 +1184,19 @@ namespace Microsoft.AspNetCore.Razor.Language
                             BuildSourceSpanFromNode(node.EndTag), node.EndTag.GetTagNameWithOptionalBang()));
                 }
 
+                if (node.StartTag != null && !_document.Options.SuppressPrimaryMethodBody)
+                {
+                    // We only want this error during the second phase of the two phase compilation.
+                    var startTagName = node.StartTag.GetTagNameWithOptionalBang();
+                    if (startTagName != null && startTagName.Length > 0 && char.IsUpper(startTagName, 0))
+                    {
+                        // A markup element that starts with an uppercase character.
+                        // It is most likely intended to be a component. Add a warning.
+                        element.Diagnostics.Add(
+                            ComponentDiagnosticFactory.Create_UnexpectedMarkupElement(startTagName, BuildSourceSpanFromNode(node.StartTag)));
+                    }
+                }
+
                 _builder.Push(element);
 
                 base.VisitMarkupElement(node);
@@ -1640,6 +1653,19 @@ namespace Microsoft.AspNetCore.Razor.Language
 
                 // We don't want to track attributes from a previous tag helper element.
                 _renderedBoundAttributeNames.Clear();
+
+                if (node.StartTag != null && node.EndTag != null)
+                {
+                    var startTagName = node.StartTag.Name?.Content;
+                    var endTagName = node.EndTag.Name?.Content;
+                    if (!string.Equals(startTagName, endTagName, StringComparison.Ordinal))
+                    {
+                        // This is most likely a case mismatch in start and end tags. Otherwise the parser wouldn't have grouped them together.
+                        // But we can't have case mismatch in start and end tags in components. Add a diagnostic.
+                        tagHelperNode.Diagnostics.Add(
+                            ComponentDiagnosticFactory.Create_InconsistentStartAndEndTagName(startTagName, endTagName, BuildSourceSpanFromNode(node.EndTag)));
+                    }
+                }
             }
 
             public override void VisitMarkupTagHelperStartTag(MarkupTagHelperStartTagSyntax node)

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

@@ -10,6 +10,7 @@ namespace Microsoft.AspNetCore.Razor.Language
         public DefaultRequiredAttributeDescriptor(
             string name,
             NameComparisonMode nameComparison,
+            bool caseSensitive,
             string value,
             ValueComparisonMode valueComparison,
             string displayName,
@@ -18,6 +19,7 @@ namespace Microsoft.AspNetCore.Razor.Language
         {
             Name = name;
             NameComparison = nameComparison;
+            CaseSensitive = caseSensitive;
             Value = value;
             ValueComparison = valueComparison;
             DisplayName = displayName;

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

@@ -9,9 +9,15 @@ namespace Microsoft.AspNetCore.Razor.Language
 {
     internal class DefaultRequiredAttributeDescriptorBuilder : RequiredAttributeDescriptorBuilder
     {
+        private DefaultTagMatchingRuleDescriptorBuilder _parent;
         private RazorDiagnosticCollection _diagnostics;
         private readonly Dictionary<string, string> _metadata = new Dictionary<string, string>();
 
+        public DefaultRequiredAttributeDescriptorBuilder(DefaultTagMatchingRuleDescriptorBuilder parent)
+        {
+            _parent = parent;
+        }
+
         public override string Name { get; set; }
 
         public override RequiredAttributeDescriptor.NameComparisonMode NameComparisonMode { get; set; }
@@ -35,6 +41,8 @@ namespace Microsoft.AspNetCore.Razor.Language
 
         public override IDictionary<string, string> Metadata => _metadata;
 
+        internal bool CaseSensitive => _parent.CaseSensitive;
+
         public RequiredAttributeDescriptor Build()
         {
             var validationDiagnostics = Validate();
@@ -48,6 +56,7 @@ namespace Microsoft.AspNetCore.Razor.Language
             var rule = new DefaultRequiredAttributeDescriptor(
                 Name,
                 NameComparisonMode,
+                CaseSensitive,
                 Value,
                 ValueComparisonMode,
                 displayName,

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

@@ -14,6 +14,7 @@ namespace Microsoft.AspNetCore.Razor.Language
             string displayName,
             string documentation,
             string tagOutputHint,
+            bool caseSensitive,
             TagMatchingRuleDescriptor[] tagMatchingRules,
             BoundAttributeDescriptor[] attributeDescriptors,
             AllowedChildTagDescriptor[] allowedChildTags,
@@ -26,6 +27,7 @@ namespace Microsoft.AspNetCore.Razor.Language
             DisplayName = displayName;
             Documentation = documentation;
             TagOutputHint = tagOutputHint;
+            CaseSensitive = caseSensitive;
             TagMatchingRules = tagMatchingRules;
             BoundAttributes = attributeDescriptors;
             AllowedChildTags = allowedChildTags;

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

@@ -40,6 +40,8 @@ namespace Microsoft.AspNetCore.Razor.Language
 
         public override string TagOutputHint { get; set; }
 
+        public override bool CaseSensitive { get; set; }
+
         public override string Documentation { get; set; }
 
         public override IDictionary<string, string> Metadata => _metadata;
@@ -124,7 +126,7 @@ namespace Microsoft.AspNetCore.Razor.Language
 
             EnsureTagMatchingRuleBuilders();
 
-            var builder = new DefaultTagMatchingRuleDescriptorBuilder();
+            var builder = new DefaultTagMatchingRuleDescriptorBuilder(this);
             configure(builder);
             _tagMatchingRuleBuilders.Add(builder);
         }
@@ -180,6 +182,7 @@ namespace Microsoft.AspNetCore.Razor.Language
                 GetDisplayName(),
                 Documentation,
                 TagOutputHint,
+                CaseSensitive,
                 tagMatchingRules,
                 attributes,
                 allowedChildTags,

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

@@ -9,12 +9,14 @@ namespace Microsoft.AspNetCore.Razor.Language
             string tagName,
             string parentTag,
             TagStructure tagStructure,
+            bool caseSensitive,
             RequiredAttributeDescriptor[] attributes,
             RazorDiagnostic[] diagnostics)
         {
             TagName = tagName;
             ParentTag = parentTag;
             TagStructure = tagStructure;
+            CaseSensitive = caseSensitive;
             Attributes = attributes;
             Diagnostics = diagnostics;
         }

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

@@ -4,17 +4,18 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using Microsoft.AspNetCore.Razor.Language.Legacy;
 
 namespace Microsoft.AspNetCore.Razor.Language
 {
     internal class DefaultTagMatchingRuleDescriptorBuilder : TagMatchingRuleDescriptorBuilder
     {
+        private DefaultTagHelperDescriptorBuilder _parent;
         private List<DefaultRequiredAttributeDescriptorBuilder> _requiredAttributeBuilders;
         private RazorDiagnosticCollection _diagnostics;
 
-        internal DefaultTagMatchingRuleDescriptorBuilder()
+        internal DefaultTagMatchingRuleDescriptorBuilder(DefaultTagHelperDescriptorBuilder parent)
         {
+            _parent = parent;
         }
 
         public override string TagName { get; set; }
@@ -23,6 +24,8 @@ namespace Microsoft.AspNetCore.Razor.Language
 
         public override TagStructure TagStructure { get; set; }
 
+        internal bool CaseSensitive => _parent.CaseSensitive;
+
         public override RazorDiagnosticCollection Diagnostics
         {
             get
@@ -55,7 +58,7 @@ namespace Microsoft.AspNetCore.Razor.Language
 
             EnsureRequiredAttributeBuilders();
 
-            var builder = new DefaultRequiredAttributeDescriptorBuilder();
+            var builder = new DefaultRequiredAttributeDescriptorBuilder(this);
             configure(builder);
             _requiredAttributeBuilders.Add(builder);
         }
@@ -85,6 +88,7 @@ namespace Microsoft.AspNetCore.Razor.Language
                 TagName,
                 ParentTag,
                 TagStructure,
+                CaseSensitive,
                 requiredAttributes,
                 diagnostics.ToArray());
 

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

@@ -13,6 +13,8 @@ namespace Microsoft.AspNetCore.Razor.Language
 
         public NameComparisonMode NameComparison { get; protected set; }
 
+        public bool CaseSensitive { get; protected set; }
+
         public string Value { get; protected set; }
 
         public ValueComparisonMode ValueComparison { get; protected set; }

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

@@ -19,27 +19,8 @@ namespace Microsoft.AspNetCore.Razor.Language
         public static readonly RequiredAttributeDescriptorComparer Default =
             new RequiredAttributeDescriptorComparer();
 
-        /// <summary>
+        private RequiredAttributeDescriptorComparer()
-        /// A default instance of the <see cref="RequiredAttributeDescriptorComparer"/> that does case-sensitive comparison.
-        /// </summary>
-        internal static readonly RequiredAttributeDescriptorComparer CaseSensitive =
-            new RequiredAttributeDescriptorComparer(caseSensitive: true);
-
-        private readonly StringComparer _stringComparer;
-        private readonly StringComparison _stringComparison;
-
-        private RequiredAttributeDescriptorComparer(bool caseSensitive = false)
         {
-            if (caseSensitive)
-            {
-                _stringComparer = StringComparer.Ordinal;
-                _stringComparison = StringComparison.Ordinal;
-            }
-            else
-            {
-                _stringComparer = StringComparer.OrdinalIgnoreCase;
-                _stringComparison = StringComparison.OrdinalIgnoreCase;
-            }
         }
 
         /// <inheritdoc />
@@ -58,9 +39,10 @@ namespace Microsoft.AspNetCore.Razor.Language
             }
 
             return
+                descriptorX.CaseSensitive == descriptorY.CaseSensitive &&
                 descriptorX.NameComparison == descriptorY.NameComparison &&
                 descriptorX.ValueComparison == descriptorY.ValueComparison &&
-                string.Equals(descriptorX.Name, descriptorY.Name, _stringComparison) &&
+                string.Equals(descriptorX.Name, descriptorY.Name, StringComparison.Ordinal) &&
                 string.Equals(descriptorX.Value, descriptorY.Value, StringComparison.Ordinal) &&
                 string.Equals(descriptorX.DisplayName, descriptorY.DisplayName, StringComparison.Ordinal);
         }
@@ -68,8 +50,13 @@ namespace Microsoft.AspNetCore.Razor.Language
         /// <inheritdoc />
         public virtual int GetHashCode(RequiredAttributeDescriptor descriptor)
         {
+            if (descriptor == null)
+            {
+                throw new ArgumentNullException(nameof(descriptor));
+            }
+
             var hash = HashCodeCombiner.Start();
-            hash.Add(descriptor.Name, _stringComparer);
+            hash.Add(descriptor.Name, StringComparer.Ordinal);
 
             return hash.CombinedHash;
         }

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

@@ -34,6 +34,8 @@ namespace Microsoft.AspNetCore.Razor.Language
 
         public string TagOutputHint { get; protected set; }
 
+        public bool CaseSensitive { get; protected set; }
+
         public IReadOnlyList<RazorDiagnostic> Diagnostics { get; protected set; }
 
         public IReadOnlyDictionary<string, string> Metadata { get; protected set; }

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

@@ -52,6 +52,8 @@ namespace Microsoft.AspNetCore.Razor.Language
 
         public abstract string TagOutputHint { get; set; }
 
+        public virtual bool CaseSensitive { get; set; }
+
         public abstract string Documentation { get; set; }
 
         public abstract IDictionary<string, string> Metadata { get; }

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

@@ -15,36 +15,8 @@ namespace Microsoft.AspNetCore.Razor.Language
         /// </summary>
         public static readonly TagHelperDescriptorComparer Default = new TagHelperDescriptorComparer();
 
-        /// <summary>
+        private TagHelperDescriptorComparer()
-        /// A default instance of the <see cref="TagHelperDescriptorComparer"/> that does case-sensitive comparison.
-        /// </summary>
-        internal static readonly TagHelperDescriptorComparer CaseSensitive =
-            new TagHelperDescriptorComparer(caseSensitive: true);
-
-        private readonly StringComparer _stringComparer;
-        private readonly StringComparison _stringComparison;
-        private readonly AllowedChildTagDescriptorComparer _AllowedChildTagDescriptorComparer;
-        private readonly BoundAttributeDescriptorComparer _boundAttributeComparer;
-        private readonly TagMatchingRuleDescriptorComparer _tagMatchingRuleComparer;
-
-        private TagHelperDescriptorComparer(bool caseSensitive = false)
         {
-            if (caseSensitive)
-            {
-                _stringComparer = StringComparer.Ordinal;
-                _stringComparison = StringComparison.Ordinal;
-                _AllowedChildTagDescriptorComparer = AllowedChildTagDescriptorComparer.CaseSensitive;
-                _boundAttributeComparer = BoundAttributeDescriptorComparer.CaseSensitive;
-                _tagMatchingRuleComparer = TagMatchingRuleDescriptorComparer.CaseSensitive;
-            }
-            else
-            {
-                _stringComparer = StringComparer.OrdinalIgnoreCase;
-                _stringComparison = StringComparison.OrdinalIgnoreCase;
-                _AllowedChildTagDescriptorComparer = AllowedChildTagDescriptorComparer.Default;
-                _boundAttributeComparer = BoundAttributeDescriptorComparer.Default;
-                _tagMatchingRuleComparer = TagMatchingRuleDescriptorComparer.Default;
-            }
         }
 
         public virtual bool Equals(TagHelperDescriptor descriptorX, TagHelperDescriptor descriptorY)
@@ -59,11 +31,6 @@ namespace Microsoft.AspNetCore.Razor.Language
                 return false;
             }
 
-            if (descriptorX == null)
-            {
-                return false;
-            }
-
             if (!string.Equals(descriptorX.Kind, descriptorY.Kind, StringComparison.Ordinal))
             {
                 return false;
@@ -80,17 +47,17 @@ namespace Microsoft.AspNetCore.Razor.Language
             }
 
             if (!Enumerable.SequenceEqual(
-                descriptorX.BoundAttributes.OrderBy(attribute => attribute.Name, _stringComparer),
+                descriptorX.BoundAttributes.OrderBy(attribute => attribute.Name, StringComparer.Ordinal),
-                descriptorY.BoundAttributes.OrderBy(attribute => attribute.Name, _stringComparer),
+                descriptorY.BoundAttributes.OrderBy(attribute => attribute.Name, StringComparer.Ordinal),
-                _boundAttributeComparer))
+                BoundAttributeDescriptorComparer.Default))
             {
                 return false;
             }
 
             if (!Enumerable.SequenceEqual(
-                descriptorX.TagMatchingRules.OrderBy(rule => rule.TagName, _stringComparer),
+                descriptorX.TagMatchingRules.OrderBy(rule => rule.TagName, StringComparer.Ordinal),
-                descriptorY.TagMatchingRules.OrderBy(rule => rule.TagName, _stringComparer),
+                descriptorY.TagMatchingRules.OrderBy(rule => rule.TagName, StringComparer.Ordinal),
-                _tagMatchingRuleComparer))
+                TagMatchingRuleDescriptorComparer.Default))
             {
                 return false;
             }
@@ -99,9 +66,14 @@ namespace Microsoft.AspNetCore.Razor.Language
                 (descriptorX.AllowedChildTags != null &&
                 descriptorY.AllowedChildTags != null &&
                 Enumerable.SequenceEqual(
-                    descriptorX.AllowedChildTags.OrderBy(childTag => childTag.Name, _stringComparer),
+                    descriptorX.AllowedChildTags.OrderBy(childTag => childTag.Name, StringComparer.Ordinal),
-                    descriptorY.AllowedChildTags.OrderBy(childTag => childTag.Name, _stringComparer),
+                    descriptorY.AllowedChildTags.OrderBy(childTag => childTag.Name, StringComparer.Ordinal),
-                    _AllowedChildTagDescriptorComparer))))
+                    AllowedChildTagDescriptorComparer.Default))))
+            {
+                return false;
+            }
+
+            if (descriptorX.CaseSensitive != descriptorY.CaseSensitive)
             {
                 return false;
             }
@@ -116,7 +88,7 @@ namespace Microsoft.AspNetCore.Razor.Language
                 return false;
             }
 
-            if (!string.Equals(descriptorX.TagOutputHint, descriptorY.TagOutputHint, _stringComparison))
+            if (!string.Equals(descriptorX.TagOutputHint, descriptorY.TagOutputHint, StringComparison.Ordinal))
             {
                 return false;
             }

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

@@ -5,6 +5,7 @@ using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Linq;
+using System.Security.Cryptography;
 
 namespace Microsoft.AspNetCore.Razor.Language
 {
@@ -81,7 +82,7 @@ namespace Microsoft.AspNetCore.Razor.Language
 
             if (rule.TagName != ElementCatchAllName &&
                 rule.TagName != null &&
-                !string.Equals(tagNameWithoutPrefix, rule.TagName, StringComparison.OrdinalIgnoreCase))
+                !string.Equals(tagNameWithoutPrefix, rule.TagName, rule.CaseSensitive ? StringComparison.Ordinal : StringComparison.OrdinalIgnoreCase))
             {
                 return false;
             }
@@ -96,7 +97,7 @@ namespace Microsoft.AspNetCore.Razor.Language
                 throw new ArgumentNullException(nameof(rule));
             }
 
-            if (rule.ParentTag != null && !string.Equals(parentTagNameWithoutPrefix, rule.ParentTag, StringComparison.OrdinalIgnoreCase))
+            if (rule.ParentTag != null && !string.Equals(parentTagNameWithoutPrefix, rule.ParentTag, rule.CaseSensitive ? StringComparison.Ordinal : StringComparison.OrdinalIgnoreCase))
             {
                 return false;
             }
@@ -137,7 +138,7 @@ namespace Microsoft.AspNetCore.Razor.Language
         {
             return descriptor.IndexerNamePrefix != null &&
                 !SatisfiesBoundAttributeName(name, descriptor) &&
-                name.StartsWith(descriptor.IndexerNamePrefix, StringComparison.OrdinalIgnoreCase);
+                name.StartsWith(descriptor.IndexerNamePrefix, descriptor.CaseSensitive ? StringComparison.Ordinal : StringComparison.OrdinalIgnoreCase);
         }
 
         public static bool SatisfiesBoundAttributeWithParameter(string name, BoundAttributeDescriptor parent, BoundAttributeParameterDescriptor descriptor)
@@ -146,7 +147,7 @@ namespace Microsoft.AspNetCore.Razor.Language
             {
                 var satisfiesBoundAttributeName = SatisfiesBoundAttributeName(attributeName, parent);
                 var satisfiesBoundAttributeIndexer = SatisfiesBoundAttributeIndexer(attributeName, parent);
-                var matchesParameter = string.Equals(descriptor.Name, parameterName, StringComparison.Ordinal);
+                var matchesParameter = string.Equals(descriptor.Name, parameterName, descriptor.CaseSensitive ? StringComparison.Ordinal : StringComparison.OrdinalIgnoreCase);
                 return (satisfiesBoundAttributeName || satisfiesBoundAttributeIndexer) && matchesParameter;
             }
 
@@ -220,7 +221,7 @@ namespace Microsoft.AspNetCore.Razor.Language
 
         private static bool SatisfiesBoundAttributeName(string name, BoundAttributeDescriptor descriptor)
         {
-            return string.Equals(descriptor.Name, name, StringComparison.OrdinalIgnoreCase);
+            return string.Equals(descriptor.Name, name, descriptor.CaseSensitive ? StringComparison.Ordinal : StringComparison.OrdinalIgnoreCase);
         }
 
         // Internal for testing
@@ -229,13 +230,13 @@ namespace Microsoft.AspNetCore.Razor.Language
             var nameMatches = false;
             if (descriptor.NameComparison == RequiredAttributeDescriptor.NameComparisonMode.FullMatch)
             {
-                nameMatches = string.Equals(descriptor.Name, attributeName, StringComparison.OrdinalIgnoreCase);
+                nameMatches = string.Equals(descriptor.Name, attributeName, descriptor.CaseSensitive ? StringComparison.Ordinal : StringComparison.OrdinalIgnoreCase);
             }
             else if (descriptor.NameComparison == RequiredAttributeDescriptor.NameComparisonMode.PrefixMatch)
             {
                 // attributeName cannot equal the Name if comparing as a PrefixMatch.
                 nameMatches = attributeName.Length != descriptor.Name.Length &&
-                    attributeName.StartsWith(descriptor.Name, StringComparison.OrdinalIgnoreCase);
+                    attributeName.StartsWith(descriptor.Name, descriptor.CaseSensitive ? StringComparison.Ordinal : StringComparison.OrdinalIgnoreCase);
             }
             else
             {

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

@@ -19,6 +19,8 @@ namespace Microsoft.AspNetCore.Razor.Language
 
         public TagStructure TagStructure { get; protected set; }
 
+        public bool CaseSensitive { get; protected set; }
+
         public IReadOnlyList<RazorDiagnostic> Diagnostics { get; protected set; }
 
         public bool HasErrors

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

@@ -4,7 +4,6 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using Microsoft.AspNetCore.Razor.Language.Legacy;
 using Microsoft.Extensions.Internal;
 
 namespace Microsoft.AspNetCore.Razor.Language
@@ -16,30 +15,8 @@ namespace Microsoft.AspNetCore.Razor.Language
         /// </summary>
         public static readonly TagMatchingRuleDescriptorComparer Default = new TagMatchingRuleDescriptorComparer();
 
-        /// <summary>
+        private TagMatchingRuleDescriptorComparer()
-        /// A default instance of the <see cref="TagMatchingRuleDescriptorComparer"/> that does case-sensitive comparison.
-        /// </summary>
-        internal static readonly TagMatchingRuleDescriptorComparer CaseSensitive =
-            new TagMatchingRuleDescriptorComparer(caseSensitive: true);
-
-        private readonly StringComparer _stringComparer;
-        private readonly StringComparison _stringComparison;
-        private readonly RequiredAttributeDescriptorComparer _requiredAttributeComparer;
-
-        private TagMatchingRuleDescriptorComparer(bool caseSensitive = false)
         {
-            if (caseSensitive)
-            {
-                _stringComparer = StringComparer.Ordinal;
-                _stringComparison = StringComparison.Ordinal;
-                _requiredAttributeComparer = RequiredAttributeDescriptorComparer.CaseSensitive;
-            }
-            else
-            {
-                _stringComparer = StringComparer.OrdinalIgnoreCase;
-                _stringComparison = StringComparison.OrdinalIgnoreCase;
-                _requiredAttributeComparer = RequiredAttributeDescriptorComparer.Default;
-            }
         }
 
         public virtual bool Equals(TagMatchingRuleDescriptor ruleX, TagMatchingRuleDescriptor ruleY)
@@ -55,10 +32,11 @@ namespace Microsoft.AspNetCore.Razor.Language
             }
 
             return
-                string.Equals(ruleX.TagName, ruleY.TagName, _stringComparison) &&
+                string.Equals(ruleX.TagName, ruleY.TagName, StringComparison.Ordinal) &&
-                string.Equals(ruleX.ParentTag, ruleY.ParentTag, _stringComparison) &&
+                string.Equals(ruleX.ParentTag, ruleY.ParentTag, StringComparison.Ordinal) &&
+                ruleX.CaseSensitive == ruleY.CaseSensitive &&
                 ruleX.TagStructure == ruleY.TagStructure &&
-                Enumerable.SequenceEqual(ruleX.Attributes, ruleY.Attributes, _requiredAttributeComparer);
+                Enumerable.SequenceEqual(ruleX.Attributes, ruleY.Attributes, RequiredAttributeDescriptorComparer.Default);
         }
 
         public virtual int GetHashCode(TagMatchingRuleDescriptor rule)
@@ -69,7 +47,7 @@ namespace Microsoft.AspNetCore.Razor.Language
             }
 
             var hash = HashCodeCombiner.Start();
-            hash.Add(rule.TagName, _stringComparer);
+            hash.Add(rule.TagName, StringComparer.Ordinal);
 
             return hash.CombinedHash;
         }

src/Razor/Microsoft.AspNetCore.Razor.Language/test/DefaultRequiredAttributeDescriptorBuilderTest.cs

@@ -11,7 +11,9 @@ namespace Microsoft.AspNetCore.Razor.Language
         public void Build_DisplayNameIsName_NameComparisonFullMatch()
         {
             // Arrange
-            var builder = new DefaultRequiredAttributeDescriptorBuilder();
+            var tagHelperBuilder = new DefaultTagHelperDescriptorBuilder(TagHelperConventions.DefaultKind, "TestTagHelper", "Test");
+            var tagMatchingRuleBuilder = new DefaultTagMatchingRuleDescriptorBuilder(tagHelperBuilder);
+            var builder = new DefaultRequiredAttributeDescriptorBuilder(tagMatchingRuleBuilder);
 
             builder
                 .Name("asp-action")
@@ -28,7 +30,9 @@ namespace Microsoft.AspNetCore.Razor.Language
         public void Build_DisplayNameIsNameWithDots_NameComparisonPrefixMatch()
         {
             // Arrange
-            var builder = new DefaultRequiredAttributeDescriptorBuilder();
+            var tagHelperBuilder = new DefaultTagHelperDescriptorBuilder(TagHelperConventions.DefaultKind, "TestTagHelper", "Test");
+            var tagMatchingRuleBuilder = new DefaultTagMatchingRuleDescriptorBuilder(tagHelperBuilder);
+            var builder = new DefaultRequiredAttributeDescriptorBuilder(tagMatchingRuleBuilder);
 
             builder
                 .Name("asp-route-")

src/Razor/Microsoft.AspNetCore.Razor.Language/test/Extensions/DefaultTagHelperOptimizationPassTest.cs

@@ -60,16 +60,16 @@ namespace Microsoft.AspNetCore.Razor.Language.Extensions
             var create = Assert.IsType<DefaultTagHelperCreateIntermediateNode>(tagHelper.Children[1]);
             Assert.Equal("__TestTagHelper", create.FieldName);
             Assert.Equal("TestTagHelper", create.TypeName);
-            Assert.Equal(tagHelpers[0], create.TagHelper, TagHelperDescriptorComparer.CaseSensitive);
+            Assert.Equal(tagHelpers[0], create.TagHelper, TagHelperDescriptorComparer.Default);
 
             var property = Assert.IsType<DefaultTagHelperPropertyIntermediateNode>(tagHelper.Children[2]);
             Assert.Equal("foo", property.AttributeName);
             Assert.Equal(AttributeStructure.DoubleQuotes, property.AttributeStructure);
-            Assert.Equal(tagHelpers[0].BoundAttributes[0], property.BoundAttribute, BoundAttributeDescriptorComparer.CaseSensitive);
+            Assert.Equal(tagHelpers[0].BoundAttributes[0], property.BoundAttribute, BoundAttributeDescriptorComparer.Default);
             Assert.Equal("__TestTagHelper", property.FieldName);
             Assert.False(property.IsIndexerNameMatch);
             Assert.Equal("FooProp", property.PropertyName);
-            Assert.Equal(tagHelpers[0], property.TagHelper, TagHelperDescriptorComparer.CaseSensitive);
+            Assert.Equal(tagHelpers[0], property.TagHelper, TagHelperDescriptorComparer.Default);
 
             var htmlAttribute = Assert.IsType<DefaultTagHelperHtmlAttributeIntermediateNode>(tagHelper.Children[3]);
             Assert.Equal("attr", htmlAttribute.AttributeName);

src/Razor/Microsoft.AspNetCore.Razor.Language/test/IntegrationTests/ComponentChildContentIntegrationTest.cs

@@ -161,8 +161,10 @@ Some Content
 </RenderChildContent>");
 
             // Assert
-            var diagnostic = Assert.Single(generated.Diagnostics);
+            Assert.Collection(
-            Assert.Same(ComponentDiagnosticFactory.ChildContentMixedWithExplicitChildContent.Id, diagnostic.Id);
+                generated.Diagnostics,
+                d => Assert.Equal("RZ10014", d.Id),
+                d => Assert.Equal("RZ9996", d.Id));
         }
 
         [Fact]

src/Razor/Microsoft.AspNetCore.Razor.Language/test/IntegrationTests/ComponentCodeGenerationTestBase.cs

@@ -998,6 +998,24 @@ namespace Test
             CompileToAssembly(generated);
         }
 
+        [Fact]
+        public void BuiltIn_BindToInputWithoutType_IsCaseSensitive()
+        {
+            // Arrange
+
+            // Act
+            var generated = CompileToCSharp(@"
+<input @BIND=""@ParentValue"" />
+@code {
+    public int ParentValue { get; set; } = 42;
+}");
+
+            // Assert
+            AssertDocumentNodeMatchesBaseline(generated.CodeDocument);
+            AssertCSharpDocumentMatchesBaseline(generated.CodeDocument);
+            CompileToAssembly(generated);
+        }
+
         [Fact]
         public void BuiltIn_BindToInputText_WithFormat_WritesAttributes()
         {
@@ -1829,12 +1847,12 @@ namespace Test3
 @using static Test2.SomeComponent
 @using Foo = Test3
 <MyComponent />
-<SomeComponent /> <!-- Not a component -->");
+<SomeComponent /> <!-- Not a component -->", throwOnFailure: false);
 
             // Assert
             AssertDocumentNodeMatchesBaseline(generated.CodeDocument);
             AssertCSharpDocumentMatchesBaseline(generated.CodeDocument);
-            var result = CompileToAssembly(generated);
+            CompileToAssembly(generated, throwOnFailure: false);
         }
 
         [Fact]
@@ -2650,6 +2668,25 @@ namespace Test
             CompileToAssembly(generated);
         }
 
+        [Fact]
+        public void EventHandler_AttributeNameIsCaseSensitive()
+        {
+            // Arrange
+
+            // Act
+            var generated = CompileToCSharp(@"
+<input @onCLICK=""OnClick"" />
+@code {
+    void OnClick(UIMouseEventArgs e) {
+    }
+}");
+
+            // Assert
+            AssertDocumentNodeMatchesBaseline(generated.CodeDocument);
+            AssertCSharpDocumentMatchesBaseline(generated.CodeDocument);
+            CompileToAssembly(generated);
+        }
+
         #endregion
 
         #region Generics
@@ -3448,6 +3485,24 @@ namespace Test
             CompileToAssembly(generated);
         }
 
+        [Fact]
+        public void Element_WithKey_AttributeNameIsCaseSensitive()
+        {
+            // Arrange/Act
+            var generated = CompileToCSharp(@"
+<elem attributebefore=""before"" @KEY=""someObject"" attributeafter=""after"">Hello</elem>
+
+@code {
+    private object someObject = new object();
+}
+");
+
+            // Assert
+            AssertDocumentNodeMatchesBaseline(generated.CodeDocument);
+            AssertCSharpDocumentMatchesBaseline(generated.CodeDocument);
+            CompileToAssembly(generated);
+        }
+
         #endregion
 
         #region Splat
@@ -3616,6 +3671,24 @@ namespace Test
             var generated = CompileToCSharp(@"
 <MyComponent Value=""18"" @attributes=""@(someAttributes)"" />
 
+@code {
+    private Dictionary<string, object> someAttributes = new Dictionary<string, object>();
+}
+");
+
+            // Assert
+            AssertDocumentNodeMatchesBaseline(generated.CodeDocument);
+            AssertCSharpDocumentMatchesBaseline(generated.CodeDocument);
+            CompileToAssembly(generated);
+        }
+
+        [Fact]
+        public void Element_WithSplat_AttributeNameIsCaseSensitive()
+        {
+            // Arrange/Act
+            var generated = CompileToCSharp(@"
+<elem attributebefore=""before"" @ATTributes=""someAttributes"" attributeafter=""after"">Hello</elem>
+
 @code {
     private Dictionary<string, object> someAttributes = new Dictionary<string, object>();
 }
@@ -3773,6 +3846,19 @@ namespace Test
             CompileToAssembly(generated);
         }
 
+        [Fact]
+        public void Element_WithRef_AttributeNameIsCaseSensitive()
+        {
+            // Arrange/Act
+            var generated = CompileToCSharp(@"
+<elem attributebefore=""before"" @rEF=""myElem"" attributeafter=""after"">Hello</elem>");
+
+            // Assert
+            AssertDocumentNodeMatchesBaseline(generated.CodeDocument);
+            AssertCSharpDocumentMatchesBaseline(generated.CodeDocument);
+            CompileToAssembly(generated);
+        }
+
         #endregion
 
         #region Templates
@@ -4430,6 +4516,29 @@ namespace New.Test
             Assert.Same(ComponentDiagnosticFactory.DuplicateMarkupAttributeDirective.Id, diagnostic.Id);
         }
 
+        [Fact]
+        public void DuplicateMarkupAttributes_DifferentCasing_IsAnError_BindValue()
+        {
+            // Arrange
+
+            // Act
+            var generated = CompileToCSharp(@"
+<div>
+  <input type=""text"" Value=""17"" @bind=""@text""></input>
+</div>
+@functions {
+    private string text = ""hi"";
+}
+");
+
+            // Assert
+            AssertDocumentNodeMatchesBaseline(generated.CodeDocument);
+            AssertCSharpDocumentMatchesBaseline(generated.CodeDocument);
+
+            var diagnostic = Assert.Single(generated.Diagnostics);
+            Assert.Same(ComponentDiagnosticFactory.DuplicateMarkupAttributeDirective.Id, diagnostic.Id);
+        }
+
         [Fact]
         public void DuplicateMarkupAttributes_IsAnError_BindOnInput()
         {
@@ -4871,6 +4980,81 @@ namespace Test
             CompileToAssembly(generated);
         }
 
+        [Fact]
+        public void Component_MatchingIsCaseSensitive()
+        {
+            // Arrange
+            AdditionalSyntaxTrees.Add(Parse(@"
+using Microsoft.AspNetCore.Components;
+
+namespace Test
+{
+    public class MyComponent : ComponentBase
+    {
+        [Parameter] public int IntProperty { get; set; }
+        [Parameter] public bool BoolProperty { get; set; }
+    }
+}
+"));
+
+            // Act
+            var generated = CompileToCSharp(@"
+<MyComponent />
+<mycomponent />
+<MyComponent intproperty='1' BoolProperty='true' />");
+
+            // Assert
+            AssertDocumentNodeMatchesBaseline(generated.CodeDocument);
+            AssertCSharpDocumentMatchesBaseline(generated.CodeDocument);
+            CompileToAssembly(generated);
+        }
+
+        [Fact]
+        public void Component_MultipleComponentsDifferByCase()
+        {
+            // Arrange
+            AdditionalSyntaxTrees.Add(Parse(@"
+using Microsoft.AspNetCore.Components;
+
+namespace Test
+{
+    public class MyComponent : ComponentBase
+    {
+        [Parameter] public int IntProperty { get; set; }
+    }
+
+    public class Mycomponent : ComponentBase
+    {
+        [Parameter] public int IntProperty { get; set; }
+    }
+}
+"));
+
+            // Act
+            var generated = CompileToCSharp(@"
+<MyComponent IntProperty='1' />
+<Mycomponent IntProperty='2' />");
+
+            // Assert
+            AssertDocumentNodeMatchesBaseline(generated.CodeDocument);
+            AssertCSharpDocumentMatchesBaseline(generated.CodeDocument);
+            CompileToAssembly(generated);
+        }
+
+        [Fact]
+        public void ElementWithUppercaseTagName_CanHideWarningWithBang()
+        {
+            // Arrange & Act
+            var generated = CompileToCSharp(@"
+<!NotAComponent />
+<!DefinitelyNotAComponent></!DefinitelyNotAComponent>");
+
+            // Assert
+            AssertDocumentNodeMatchesBaseline(generated.CodeDocument);
+            AssertCSharpDocumentMatchesBaseline(generated.CodeDocument);
+            CompileToAssembly(generated);
+        }
+
         #endregion
     }
 }

src/Razor/Microsoft.AspNetCore.Razor.Language/test/IntegrationTests/ComponentDiagnosticRazorIntegrationTest.cs

@@ -9,6 +9,8 @@ namespace Microsoft.AspNetCore.Razor.Language.IntegrationTests
     {
         internal override string FileKind => FileKinds.Component;
 
+        internal override bool UseTwoPhaseCompilation => true;
+
         [Fact]
         public void RejectsEndTagWithNoStartTag()
         {
@@ -125,5 +127,79 @@ namespace Test
                 "Component attributes do not support complex content (mixed C# and markup). Attribute: '@key', text: 'Foo @Text'",
                 diagnostic.GetMessage());
         }
+
+        [Fact]
+        public void Component_StartsWithLowerCase_ReportsError()
+        {
+            // Arrange & Act
+            var generated = CompileToCSharp("lowerCase.razor", @"
+<input type=""text"" @bind=""Text"" />
+@functions {
+    public string Text { get; set; } = ""text"";
+}", throwOnFailure: false);
+
+            // Assert
+            var diagnostic = Assert.Single(generated.Diagnostics);
+            Assert.Equal("RZ10013", diagnostic.Id);
+            Assert.Equal(
+                "Component 'lowerCase' starts with a lowercase character. Component names cannot start with a lowercase character.",
+                diagnostic.GetMessage());
+        }
+
+        [Fact]
+        public void Element_DoesNotStartWithLowerCase_ReportsWarning()
+        {
+            // Arrange & Act
+            var generated = CompileToCSharp(@"
+<PossibleComponent></PossibleComponent>
+
+@functions {
+    public string Text { get; set; } = ""text"";
+}");
+
+            // Assert
+            var diagnostic = Assert.Single(generated.Diagnostics);
+            Assert.Equal("RZ10014", diagnostic.Id);
+            Assert.Equal(RazorDiagnosticSeverity.Warning, diagnostic.Severity);
+            Assert.Equal(
+                "Found markup element with unexpected name 'PossibleComponent'. If this is intended to be a component, add a @using directive for its namespace.",
+                diagnostic.GetMessage());
+        }
+
+        [Fact]
+        public void Element_DoesNotStartWithLowerCase_OverrideWithBang_NoWarning()
+        {
+            // Arrange & Act
+            var generated = CompileToCSharp(@"
+<!PossibleComponent></!PossibleComponent>");
+
+            // Assert
+            Assert.Empty(generated.Diagnostics);
+        }
+
+        [Fact]
+        public void Component_StartAndEndTagCaseMismatch_ReportsError()
+        {
+            // Arrange & Act
+            AdditionalSyntaxTrees.Add(Parse(@"
+using Microsoft.AspNetCore.Components;
+
+namespace Test
+{
+    public class MyComponent : ComponentBase
+    {
+    }
+}
+"));
+            var generated = CompileToCSharp(@"
+<MyComponent></mycomponent>");
+
+            // Assert
+            var diagnostic = Assert.Single(generated.Diagnostics);
+            Assert.Equal("RZ10015", diagnostic.Id);
+            Assert.Equal(
+                "The start tag name 'MyComponent' does not match the end tag name 'mycomponent'. Components must have matching start and end tag names (case-sensitive).",
+                diagnostic.GetMessage());
+        }
     }
 }

src/Razor/Microsoft.AspNetCore.Razor.Language/test/IntegrationTests/ComponentTemplateIntegrationTest.cs

@@ -9,6 +9,8 @@ namespace Microsoft.AspNetCore.Razor.Language.IntegrationTests
     {
         internal override string FileKind => FileKinds.Component;
 
+        internal override bool UseTwoPhaseCompilation => true;
+
         // Razor doesn't parse this as a template, we don't need much special handling for
         // it because it will just be invalid in general.
         [Fact]
@@ -17,7 +19,7 @@ namespace Microsoft.AspNetCore.Razor.Language.IntegrationTests
             // Arrange
 
             // Act
-            var generated = CompileToCSharp(@"<div attr=""@<div></div>"" />");
+            var generated = CompileToCSharp(@"<div attr=""@<div></div>"" />", throwOnFailure: false);
 
             // Assert
             var diagnostic = Assert.Single(generated.Diagnostics);
@@ -55,11 +57,13 @@ namespace Test
 "));
 
             // Act
-            var generated = CompileToCSharp(@"<MyComponent attr=""@<div></div>"" />");
+            var generated = CompileToCSharp(@"<MyComponent attr=""@<div></div>"" />", throwOnFailure: false);
 
             // Assert
-            var diagnostic = Assert.Single(generated.Diagnostics);
+            Assert.Collection(
-            Assert.Equal("RZ1005", diagnostic.Id);
+                generated.Diagnostics,
+                d => Assert.Equal("RZ9986", d.Id),
+                d => Assert.Equal("RZ1005", d.Id));
         }
 
         [Fact]

src/Razor/Microsoft.AspNetCore.Razor.Language/test/Legacy/TagHelperParseTreeRewriterTest.cs

@@ -1880,5 +1880,57 @@ namespace Microsoft.AspNetCore.Razor.Language.Legacy
         {
             RunParseTreeRewriterTest("<input>Foo</input>");
         }
+
+        public static TagHelperDescriptor[] CaseSensitive_Descriptors = new TagHelperDescriptor[]
+        {
+            TagHelperDescriptorBuilder.Create("pTagHelper", "SomeAssembly")
+                .SetCaseSensitive()
+                .BoundAttributeDescriptor(attribute =>
+                    attribute
+                    .Name("bound")
+                    .PropertyName("Bound")
+                    .TypeName(typeof(bool).FullName))
+                .TagMatchingRuleDescriptor(rule =>
+                    rule
+                    .RequireTagName("p")
+                    .RequireAttributeDescriptor(attribute => attribute.Name("class")))
+                .Build(),
+            TagHelperDescriptorBuilder.Create("catchAllTagHelper", "SomeAssembly")
+                .TagMatchingRuleDescriptor(rule =>
+                    rule
+                    .RequireTagName("*")
+                    .RequireAttributeDescriptor(attribute => attribute.Name("catchAll")))
+                .Build(),
+        };
+
+        [Fact]
+        public void HandlesCaseSensitiveTagHelpersCorrectly1()
+        {
+            EvaluateData(CaseSensitive_Descriptors, "<p class='foo' catchAll></p>");
+        }
+
+        [Fact]
+        public void HandlesCaseSensitiveTagHelpersCorrectly2()
+        {
+            EvaluateData(CaseSensitive_Descriptors, "<p CLASS='foo' CATCHAll></p>");
+        }
+
+        [Fact]
+        public void HandlesCaseSensitiveTagHelpersCorrectly3()
+        {
+            EvaluateData(CaseSensitive_Descriptors, "<P class='foo' CATCHAll></P>");
+        }
+
+        [Fact]
+        public void HandlesCaseSensitiveTagHelpersCorrectly4()
+        {
+            EvaluateData(CaseSensitive_Descriptors, "<P class='foo'></P>");
+        }
+
+        [Fact]
+        public void HandlesCaseSensitiveTagHelpersCorrectly5()
+        {
+            EvaluateData(CaseSensitive_Descriptors, "<p Class='foo'></p>");
+        }
     }
 }

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TagHelperBinderTest.cs

@@ -32,12 +32,12 @@ namespace Microsoft.AspNetCore.Razor.Language
                 parentIsTagHelper: false);
 
             // Assert
-            Assert.Equal(expectedDescriptors, bindingResult.Descriptors, TagHelperDescriptorComparer.CaseSensitive);
+            Assert.Equal(expectedDescriptors, bindingResult.Descriptors, TagHelperDescriptorComparer.Default);
             Assert.Equal("th:div", bindingResult.TagName);
             Assert.Equal("body", bindingResult.ParentTagName);
             Assert.Equal(expectedAttributes, bindingResult.Attributes);
             Assert.Equal("th:", bindingResult.TagHelperPrefix);
-            Assert.Equal(divTagHelper.TagMatchingRules, bindingResult.Mappings[divTagHelper], TagMatchingRuleDescriptorComparer.CaseSensitive);
+            Assert.Equal(divTagHelper.TagMatchingRules, bindingResult.Mappings[divTagHelper], TagMatchingRuleDescriptorComparer.Default);
         }
 
         public static TheoryData RequiredParentData
@@ -114,7 +114,7 @@ namespace Microsoft.AspNetCore.Razor.Language
                 parentIsTagHelper: false);
 
             // Assert
-            Assert.Equal((IEnumerable<TagHelperDescriptor>)expectedDescriptors, bindingResult.Descriptors, TagHelperDescriptorComparer.CaseSensitive);
+            Assert.Equal((IEnumerable<TagHelperDescriptor>)expectedDescriptors, bindingResult.Descriptors, TagHelperDescriptorComparer.Default);
         }
 
         public static TheoryData RequiredAttributeData
@@ -277,7 +277,7 @@ namespace Microsoft.AspNetCore.Razor.Language
             var bindingResult = tagHelperBinder.GetBinding(tagName, providedAttributes, parentTagName: "p", parentIsTagHelper: false);
 
             // Assert
-            Assert.Equal((IEnumerable<TagHelperDescriptor>)expectedDescriptors, bindingResult?.Descriptors, TagHelperDescriptorComparer.CaseSensitive);
+            Assert.Equal((IEnumerable<TagHelperDescriptor>)expectedDescriptors, bindingResult?.Descriptors, TagHelperDescriptorComparer.Default);
         }
 
         [Fact]
@@ -598,5 +598,59 @@ namespace Microsoft.AspNetCore.Razor.Language
             // Assert
             Assert.False(bindingResult.IsAttributeMatch);
         }
+
+        [Fact]
+        public void GetBinding_CaseSensitiveRule_CaseMismatch_ReturnsNull()
+        {
+            // Arrange
+            var divTagHelper = TagHelperDescriptorBuilder.Create("DivTagHelper", "SomeAssembly")
+                .TagMatchingRuleDescriptor(rule => rule.RequireTagName("div"))
+                .SetCaseSensitive()
+                .Build();
+            var expectedDescriptors = new[] { divTagHelper };
+            var expectedAttributes = new[]
+            {
+                new KeyValuePair<string, string>("class", "something")
+            };
+            var tagHelperBinder = new TagHelperBinder("th:", expectedDescriptors);
+
+            // Act
+            var bindingResult = tagHelperBinder.GetBinding(
+                tagName: "th:Div",
+                attributes: expectedAttributes,
+                parentTagName: "body",
+                parentIsTagHelper: false);
+
+            // Assert
+            Assert.Null(bindingResult);
+        }
+
+        [Fact]
+        public void GetBinding_CaseSensitiveRequiredAttribute_CaseMismatch_ReturnsNull()
+        {
+            // Arrange
+            var divTagHelper = TagHelperDescriptorBuilder.Create("DivTagHelper", "SomeAssembly")
+                .TagMatchingRuleDescriptor(rule => rule
+                    .RequireTagName("div")
+                    .RequireAttributeDescriptor(attribute => attribute.Name("class")))
+                .SetCaseSensitive()
+                .Build();
+            var expectedDescriptors = new[] { divTagHelper };
+            var expectedAttributes = new[]
+            {
+                new KeyValuePair<string, string>("CLASS", "something")
+            };
+            var tagHelperBinder = new TagHelperBinder(null, expectedDescriptors);
+
+            // Act
+            var bindingResult = tagHelperBinder.GetBinding(
+                tagName: "div",
+                attributes: expectedAttributes,
+                parentTagName: "body",
+                parentIsTagHelper: false);
+
+            // Assert
+            Assert.Null(bindingResult);
+        }
     }
 }

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TagHelperMatchingConventionsTest.cs

@@ -140,8 +140,10 @@ namespace Microsoft.AspNetCore.Razor.Language
             bool expectedResult)
         {
             // Arrange
+            var tagHelperBuilder = new DefaultTagHelperDescriptorBuilder(TagHelperConventions.DefaultKind, "TestTagHelper", "Test");
+            var tagMatchingRuleBuilder = new DefaultTagMatchingRuleDescriptorBuilder(tagHelperBuilder);
+            var builder = new DefaultRequiredAttributeDescriptorBuilder(tagMatchingRuleBuilder);
 
-            var builder = new DefaultRequiredAttributeDescriptorBuilder();
             configure(builder);
 
             var requiredAttibute = builder.Build();

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentDesignTimeCodeGenerationTest/BuiltIn_BindToInputWithoutType_IsCaseSensitive/TestComponent.codegen.cs

@@ -0,0 +1,44 @@
+// <auto-generated/>
+#pragma warning disable 1591
+namespace Test
+{
+    #line hidden
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Threading.Tasks;
+    using Microsoft.AspNetCore.Components;
+    public class TestComponent : Microsoft.AspNetCore.Components.ComponentBase
+    {
+        #pragma warning disable 219
+        private void __RazorDirectiveTokenHelpers__() {
+        }
+        #pragma warning restore 219
+        #pragma warning disable 0414
+        private static System.Object __o = null;
+        #pragma warning restore 0414
+        #pragma warning disable 1998
+        protected override void BuildRenderTree(Microsoft.AspNetCore.Components.RenderTree.RenderTreeBuilder builder)
+        {
+            __o = 
+#nullable restore
+#line 1 "x:\dir\subdir\Test\TestComponent.cshtml"
+               ParentValue
+
+#line default
+#line hidden
+#nullable disable
+            ;
+        }
+        #pragma warning restore 1998
+#nullable restore
+#line 2 "x:\dir\subdir\Test\TestComponent.cshtml"
+       
+    public int ParentValue { get; set; } = 42;
+
+#line default
+#line hidden
+#nullable disable
+    }
+}
+#pragma warning restore 1591

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentDesignTimeCodeGenerationTest/BuiltIn_BindToInputWithoutType_IsCaseSensitive/TestComponent.ir.txt

@@ -0,0 +1,24 @@
+Document - 
+    NamespaceDeclaration -  - Test
+        UsingDirective - (3:1,1 [12] ) - System
+        UsingDirective - (18:2,1 [32] ) - System.Collections.Generic
+        UsingDirective - (53:3,1 [17] ) - System.Linq
+        UsingDirective - (73:4,1 [28] ) - System.Threading.Tasks
+        UsingDirective - (104:5,1 [37] ) - Microsoft.AspNetCore.Components
+        ClassDeclaration -  - public - TestComponent - Microsoft.AspNetCore.Components.ComponentBase - 
+            DesignTimeDirective - 
+            CSharpCode - 
+                IntermediateToken -  - CSharp - #pragma warning disable 0414
+            CSharpCode - 
+                IntermediateToken -  - CSharp - private static System.Object __o = null;
+            CSharpCode - 
+                IntermediateToken -  - CSharp - #pragma warning restore 0414
+            MethodDeclaration -  - protected override - void - BuildRenderTree
+                MarkupElement - (0:0,0 [30] x:\dir\subdir\Test\TestComponent.cshtml) - input
+                    HtmlAttribute - (6:0,6 [21] x:\dir\subdir\Test\TestComponent.cshtml) -  @BIND=" - "
+                        CSharpExpressionAttributeValue - (14:0,14 [12] x:\dir\subdir\Test\TestComponent.cshtml) - 
+                            IntermediateToken - (15:0,15 [11] x:\dir\subdir\Test\TestComponent.cshtml) - CSharp - ParentValue
+                HtmlContent - (30:0,30 [2] x:\dir\subdir\Test\TestComponent.cshtml)
+                    IntermediateToken - (30:0,30 [2] x:\dir\subdir\Test\TestComponent.cshtml) - Html - \n
+            CSharpCode - (39:1,7 [50] x:\dir\subdir\Test\TestComponent.cshtml)
+                IntermediateToken - (39:1,7 [50] x:\dir\subdir\Test\TestComponent.cshtml) - CSharp - \n    public int ParentValue { get; set; } = 42;\n

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentDesignTimeCodeGenerationTest/BuiltIn_BindToInputWithoutType_IsCaseSensitive/TestComponent.mappings.txt

@@ -0,0 +1,14 @@
+Source Location: (15:0,15 [11] x:\dir\subdir\Test\TestComponent.cshtml)
+|ParentValue|
+Generated Location: (878:25,15 [11] )
+|ParentValue|
+
+Source Location: (39:1,7 [50] x:\dir\subdir\Test\TestComponent.cshtml)
+|
+    public int ParentValue { get; set; } = 42;
+|
+Generated Location: (1082:35,7 [50] )
+|
+    public int ParentValue { get; set; } = 42;
+|
+

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentDesignTimeCodeGenerationTest/Component_IgnoresStaticAndAliasUsings/TestComponent.diagnostics.txt

@@ -0,0 +1 @@
+x:\dir\subdir\Test\TestComponent.cshtml(4,1): Warning RZ10014: Found markup element with unexpected name 'SomeComponent'. If this is intended to be a component, add a @using directive for its namespace.

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentDesignTimeCodeGenerationTest/Component_MatchingIsCaseSensitive/TestComponent.codegen.cs

@@ -0,0 +1,57 @@
+// <auto-generated/>
+#pragma warning disable 1591
+namespace Test
+{
+    #line hidden
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Threading.Tasks;
+    using Microsoft.AspNetCore.Components;
+    public class TestComponent : Microsoft.AspNetCore.Components.ComponentBase
+    {
+        #pragma warning disable 219
+        private void __RazorDirectiveTokenHelpers__() {
+        }
+        #pragma warning restore 219
+        #pragma warning disable 0414
+        private static System.Object __o = null;
+        #pragma warning restore 0414
+        #pragma warning disable 1998
+        protected override void BuildRenderTree(Microsoft.AspNetCore.Components.RenderTree.RenderTreeBuilder builder)
+        {
+            builder.AddAttribute(-1, "ChildContent", (Microsoft.AspNetCore.Components.RenderFragment)((builder2) => {
+            }
+            ));
+#nullable restore
+#line 1 "x:\dir\subdir\Test\TestComponent.cshtml"
+__o = typeof(MyComponent);
+
+#line default
+#line hidden
+#nullable disable
+            __o = "";
+            __o = Microsoft.AspNetCore.Components.RuntimeHelpers.TypeCheck<System.Boolean>(
+#nullable restore
+#line 3 "x:\dir\subdir\Test\TestComponent.cshtml"
+                                           true
+
+#line default
+#line hidden
+#nullable disable
+            );
+            builder.AddAttribute(-1, "ChildContent", (Microsoft.AspNetCore.Components.RenderFragment)((builder2) => {
+            }
+            ));
+#nullable restore
+#line 3 "x:\dir\subdir\Test\TestComponent.cshtml"
+__o = typeof(MyComponent);
+
+#line default
+#line hidden
+#nullable disable
+        }
+        #pragma warning restore 1998
+    }
+}
+#pragma warning restore 1591

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentDesignTimeCodeGenerationTest/Component_MatchingIsCaseSensitive/TestComponent.ir.txt

@@ -0,0 +1,28 @@
+Document - 
+    NamespaceDeclaration -  - Test
+        UsingDirective - (3:1,1 [12] ) - System
+        UsingDirective - (18:2,1 [32] ) - System.Collections.Generic
+        UsingDirective - (53:3,1 [17] ) - System.Linq
+        UsingDirective - (73:4,1 [28] ) - System.Threading.Tasks
+        UsingDirective - (104:5,1 [37] ) - Microsoft.AspNetCore.Components
+        ClassDeclaration -  - public - TestComponent - Microsoft.AspNetCore.Components.ComponentBase - 
+            DesignTimeDirective - 
+            CSharpCode - 
+                IntermediateToken -  - CSharp - #pragma warning disable 0414
+            CSharpCode - 
+                IntermediateToken -  - CSharp - private static System.Object __o = null;
+            CSharpCode - 
+                IntermediateToken -  - CSharp - #pragma warning restore 0414
+            MethodDeclaration -  - protected override - void - BuildRenderTree
+                Component - (0:0,0 [15] x:\dir\subdir\Test\TestComponent.cshtml) - MyComponent
+                HtmlContent - (15:0,15 [2] x:\dir\subdir\Test\TestComponent.cshtml)
+                    IntermediateToken - (15:0,15 [2] x:\dir\subdir\Test\TestComponent.cshtml) - Html - \n
+                MarkupElement - (17:1,0 [15] x:\dir\subdir\Test\TestComponent.cshtml) - mycomponent
+                HtmlContent - (32:1,15 [2] x:\dir\subdir\Test\TestComponent.cshtml)
+                    IntermediateToken - (32:1,15 [2] x:\dir\subdir\Test\TestComponent.cshtml) - Html - \n
+                Component - (34:2,0 [51] x:\dir\subdir\Test\TestComponent.cshtml) - MyComponent
+                    ComponentAttribute -  - intproperty - AttributeStructure.SingleQuotes
+                        HtmlContent - (60:2,26 [1] x:\dir\subdir\Test\TestComponent.cshtml)
+                            IntermediateToken - (60:2,26 [1] x:\dir\subdir\Test\TestComponent.cshtml) - Html - 1
+                    ComponentAttribute - (77:2,43 [4] x:\dir\subdir\Test\TestComponent.cshtml) - BoolProperty - AttributeStructure.SingleQuotes
+                        IntermediateToken - (77:2,43 [4] x:\dir\subdir\Test\TestComponent.cshtml) - CSharp - true

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentDesignTimeCodeGenerationTest/Component_MatchingIsCaseSensitive/TestComponent.mappings.txt

@@ -0,0 +1,5 @@
+Source Location: (77:2,43 [4] x:\dir\subdir\Test\TestComponent.cshtml)
+|true|
+Generated Location: (1301:36,43 [4] )
+|true|
+

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentDesignTimeCodeGenerationTest/Component_MultipleComponentsDifferByCase/TestComponent.codegen.cs

@@ -0,0 +1,65 @@
+// <auto-generated/>
+#pragma warning disable 1591
+namespace Test
+{
+    #line hidden
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Threading.Tasks;
+    using Microsoft.AspNetCore.Components;
+    public class TestComponent : Microsoft.AspNetCore.Components.ComponentBase
+    {
+        #pragma warning disable 219
+        private void __RazorDirectiveTokenHelpers__() {
+        }
+        #pragma warning restore 219
+        #pragma warning disable 0414
+        private static System.Object __o = null;
+        #pragma warning restore 0414
+        #pragma warning disable 1998
+        protected override void BuildRenderTree(Microsoft.AspNetCore.Components.RenderTree.RenderTreeBuilder builder)
+        {
+            __o = Microsoft.AspNetCore.Components.RuntimeHelpers.TypeCheck<System.Int32>(
+#nullable restore
+#line 1 "x:\dir\subdir\Test\TestComponent.cshtml"
+                          1
+
+#line default
+#line hidden
+#nullable disable
+            );
+            builder.AddAttribute(-1, "ChildContent", (Microsoft.AspNetCore.Components.RenderFragment)((builder2) => {
+            }
+            ));
+#nullable restore
+#line 1 "x:\dir\subdir\Test\TestComponent.cshtml"
+__o = typeof(MyComponent);
+
+#line default
+#line hidden
+#nullable disable
+            __o = Microsoft.AspNetCore.Components.RuntimeHelpers.TypeCheck<System.Int32>(
+#nullable restore
+#line 2 "x:\dir\subdir\Test\TestComponent.cshtml"
+                          2
+
+#line default
+#line hidden
+#nullable disable
+            );
+            builder.AddAttribute(-1, "ChildContent", (Microsoft.AspNetCore.Components.RenderFragment)((builder2) => {
+            }
+            ));
+#nullable restore
+#line 2 "x:\dir\subdir\Test\TestComponent.cshtml"
+__o = typeof(Mycomponent);
+
+#line default
+#line hidden
+#nullable disable
+        }
+        #pragma warning restore 1998
+    }
+}
+#pragma warning restore 1591

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentDesignTimeCodeGenerationTest/Component_MultipleComponentsDifferByCase/TestComponent.ir.txt

@@ -0,0 +1,24 @@
+Document - 
+    NamespaceDeclaration -  - Test
+        UsingDirective - (3:1,1 [12] ) - System
+        UsingDirective - (18:2,1 [32] ) - System.Collections.Generic
+        UsingDirective - (53:3,1 [17] ) - System.Linq
+        UsingDirective - (73:4,1 [28] ) - System.Threading.Tasks
+        UsingDirective - (104:5,1 [37] ) - Microsoft.AspNetCore.Components
+        ClassDeclaration -  - public - TestComponent - Microsoft.AspNetCore.Components.ComponentBase - 
+            DesignTimeDirective - 
+            CSharpCode - 
+                IntermediateToken -  - CSharp - #pragma warning disable 0414
+            CSharpCode - 
+                IntermediateToken -  - CSharp - private static System.Object __o = null;
+            CSharpCode - 
+                IntermediateToken -  - CSharp - #pragma warning restore 0414
+            MethodDeclaration -  - protected override - void - BuildRenderTree
+                Component - (0:0,0 [31] x:\dir\subdir\Test\TestComponent.cshtml) - MyComponent
+                    ComponentAttribute - (26:0,26 [1] x:\dir\subdir\Test\TestComponent.cshtml) - IntProperty - AttributeStructure.SingleQuotes
+                        IntermediateToken - (26:0,26 [1] x:\dir\subdir\Test\TestComponent.cshtml) - CSharp - 1
+                HtmlContent - (31:0,31 [2] x:\dir\subdir\Test\TestComponent.cshtml)
+                    IntermediateToken - (31:0,31 [2] x:\dir\subdir\Test\TestComponent.cshtml) - Html - \n
+                Component - (33:1,0 [31] x:\dir\subdir\Test\TestComponent.cshtml) - Mycomponent
+                    ComponentAttribute - (59:1,26 [1] x:\dir\subdir\Test\TestComponent.cshtml) - IntProperty - AttributeStructure.SingleQuotes
+                        IntermediateToken - (59:1,26 [1] x:\dir\subdir\Test\TestComponent.cshtml) - CSharp - 2

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentDesignTimeCodeGenerationTest/Component_MultipleComponentsDifferByCase/TestComponent.mappings.txt

@@ -0,0 +1,10 @@
+Source Location: (26:0,26 [1] x:\dir\subdir\Test\TestComponent.cshtml)
+|1|
+Generated Location: (960:25,26 [1] )
+|1|
+
+Source Location: (59:1,26 [1] x:\dir\subdir\Test\TestComponent.cshtml)
+|2|
+Generated Location: (1515:44,26 [1] )
+|2|
+

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentDesignTimeCodeGenerationTest/DuplicateMarkupAttributes_DifferentCasing_IsAnError_BindValue/TestComponent.codegen.cs

@@ -0,0 +1,45 @@
+// <auto-generated/>
+#pragma warning disable 1591
+namespace Test
+{
+    #line hidden
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Threading.Tasks;
+    using Microsoft.AspNetCore.Components;
+    public class TestComponent : Microsoft.AspNetCore.Components.ComponentBase
+    {
+        #pragma warning disable 219
+        private void __RazorDirectiveTokenHelpers__() {
+        }
+        #pragma warning restore 219
+        #pragma warning disable 0414
+        private static System.Object __o = null;
+        #pragma warning restore 0414
+        #pragma warning disable 1998
+        protected override void BuildRenderTree(Microsoft.AspNetCore.Components.RenderTree.RenderTreeBuilder builder)
+        {
+            __o = Microsoft.AspNetCore.Components.BindMethods.GetValue(
+#nullable restore
+#line 2 "x:\dir\subdir\Test\TestComponent.cshtml"
+                                        text
+
+#line default
+#line hidden
+#nullable disable
+            );
+            __o = Microsoft.AspNetCore.Components.EventCallback.Factory.CreateBinder(this, __value => text = __value, text);
+        }
+        #pragma warning restore 1998
+#nullable restore
+#line 4 "x:\dir\subdir\Test\TestComponent.cshtml"
+            
+    private string text = "hi";
+
+#line default
+#line hidden
+#nullable disable
+    }
+}
+#pragma warning restore 1591

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentDesignTimeCodeGenerationTest/DuplicateMarkupAttributes_DifferentCasing_IsAnError_BindValue/TestComponent.diagnostics.txt

@@ -0,0 +1 @@
+x:\dir\subdir\Test\TestComponent.cshtml(2,3): Error RZ10008: The attribute 'Value' is used two or more times for this element. Attributes must be unique (case-insensitive). The attribute 'Value' is used by the '@bind' directive attribute.

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentDesignTimeCodeGenerationTest/DuplicateMarkupAttributes_DifferentCasing_IsAnError_BindValue/TestComponent.ir.txt

@@ -0,0 +1,44 @@
+Document - 
+    NamespaceDeclaration -  - Test
+        UsingDirective - (3:1,1 [12] ) - System
+        UsingDirective - (18:2,1 [32] ) - System.Collections.Generic
+        UsingDirective - (53:3,1 [17] ) - System.Linq
+        UsingDirective - (73:4,1 [28] ) - System.Threading.Tasks
+        UsingDirective - (104:5,1 [37] ) - Microsoft.AspNetCore.Components
+        ClassDeclaration -  - public - TestComponent - Microsoft.AspNetCore.Components.ComponentBase - 
+            DesignTimeDirective - 
+            CSharpCode - 
+                IntermediateToken -  - CSharp - #pragma warning disable 0414
+            CSharpCode - 
+                IntermediateToken -  - CSharp - private static System.Object __o = null;
+            CSharpCode - 
+                IntermediateToken -  - CSharp - #pragma warning restore 0414
+            MethodDeclaration -  - protected override - void - BuildRenderTree
+                MarkupElement - (0:0,0 [69] x:\dir\subdir\Test\TestComponent.cshtml) - div
+                    HtmlContent - (5:0,5 [4] x:\dir\subdir\Test\TestComponent.cshtml)
+                        IntermediateToken - (5:0,5 [4] x:\dir\subdir\Test\TestComponent.cshtml) - Html - \n  
+                    MarkupElement - (9:1,2 [52] x:\dir\subdir\Test\TestComponent.cshtml) - input
+                        HtmlAttribute -  - type=" - "
+                            HtmlAttributeValue - (22:1,15 [4] x:\dir\subdir\Test\TestComponent.cshtml) - 
+                                IntermediateToken - (22:1,15 [4] x:\dir\subdir\Test\TestComponent.cshtml) - Html - text
+                        HtmlAttribute -  - Value=" - "
+                            HtmlAttributeValue - (35:1,28 [2] x:\dir\subdir\Test\TestComponent.cshtml) - 
+                                IntermediateToken - (35:1,28 [2] x:\dir\subdir\Test\TestComponent.cshtml) - Html - 17
+                        HtmlAttribute - (46:1,39 [5] x:\dir\subdir\Test\TestComponent.cshtml) - value=" - "
+                            CSharpExpressionAttributeValue -  - 
+                                IntermediateToken -  - CSharp - Microsoft.AspNetCore.Components.BindMethods.GetValue(
+                                IntermediateToken - (47:1,40 [4] x:\dir\subdir\Test\TestComponent.cshtml) - CSharp - text
+                                IntermediateToken -  - CSharp - )
+                        HtmlAttribute - (46:1,39 [5] x:\dir\subdir\Test\TestComponent.cshtml) - onchange=" - "
+                            CSharpExpressionAttributeValue -  - 
+                                IntermediateToken -  - CSharp - Microsoft.AspNetCore.Components.EventCallback.Factory.CreateBinder(this, __value => text = __value, 
+                                IntermediateToken -  - CSharp - text
+                                IntermediateToken -  - CSharp - )
+                    HtmlContent - (61:1,54 [2] x:\dir\subdir\Test\TestComponent.cshtml)
+                        IntermediateToken - (61:1,54 [2] x:\dir\subdir\Test\TestComponent.cshtml) - Html - \n
+                HtmlContent - (69:2,6 [2] x:\dir\subdir\Test\TestComponent.cshtml)
+                    IntermediateToken - (69:2,6 [2] x:\dir\subdir\Test\TestComponent.cshtml) - Html - \n
+                HtmlContent - (119:5,1 [2] x:\dir\subdir\Test\TestComponent.cshtml)
+                    IntermediateToken - (119:5,1 [2] x:\dir\subdir\Test\TestComponent.cshtml) - Html - \n
+            CSharpCode - (83:3,12 [35] x:\dir\subdir\Test\TestComponent.cshtml)
+                IntermediateToken - (83:3,12 [35] x:\dir\subdir\Test\TestComponent.cshtml) - CSharp - \n    private string text = "hi";\n

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentDesignTimeCodeGenerationTest/DuplicateMarkupAttributes_DifferentCasing_IsAnError_BindValue/TestComponent.mappings.txt

@@ -0,0 +1,14 @@
+Source Location: (47:1,40 [4] x:\dir\subdir\Test\TestComponent.cshtml)
+|text|
+Generated Location: (956:25,40 [4] )
+|text|
+
+Source Location: (83:3,12 [35] x:\dir\subdir\Test\TestComponent.cshtml)
+|
+    private string text = "hi";
+|
+Generated Location: (1285:36,12 [35] )
+|
+    private string text = "hi";
+|
+

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentDesignTimeCodeGenerationTest/ElementWithUppercaseTagName_CanHideWarningWithBang/TestComponent.codegen.cs

@@ -0,0 +1,27 @@
+// <auto-generated/>
+#pragma warning disable 1591
+namespace Test
+{
+    #line hidden
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Threading.Tasks;
+    using Microsoft.AspNetCore.Components;
+    public class TestComponent : Microsoft.AspNetCore.Components.ComponentBase
+    {
+        #pragma warning disable 219
+        private void __RazorDirectiveTokenHelpers__() {
+        }
+        #pragma warning restore 219
+        #pragma warning disable 0414
+        private static System.Object __o = null;
+        #pragma warning restore 0414
+        #pragma warning disable 1998
+        protected override void BuildRenderTree(Microsoft.AspNetCore.Components.RenderTree.RenderTreeBuilder builder)
+        {
+        }
+        #pragma warning restore 1998
+    }
+}
+#pragma warning restore 1591

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentDesignTimeCodeGenerationTest/ElementWithUppercaseTagName_CanHideWarningWithBang/TestComponent.ir.txt

@@ -0,0 +1,20 @@
+Document - 
+    NamespaceDeclaration -  - Test
+        UsingDirective - (3:1,1 [12] ) - System
+        UsingDirective - (18:2,1 [32] ) - System.Collections.Generic
+        UsingDirective - (53:3,1 [17] ) - System.Linq
+        UsingDirective - (73:4,1 [28] ) - System.Threading.Tasks
+        UsingDirective - (104:5,1 [37] ) - Microsoft.AspNetCore.Components
+        ClassDeclaration -  - public - TestComponent - Microsoft.AspNetCore.Components.ComponentBase - 
+            DesignTimeDirective - 
+            CSharpCode - 
+                IntermediateToken -  - CSharp - #pragma warning disable 0414
+            CSharpCode - 
+                IntermediateToken -  - CSharp - private static System.Object __o = null;
+            CSharpCode - 
+                IntermediateToken -  - CSharp - #pragma warning restore 0414
+            MethodDeclaration -  - protected override - void - BuildRenderTree
+                MarkupElement - (0:0,0 [18] x:\dir\subdir\Test\TestComponent.cshtml) - NotAComponent
+                HtmlContent - (18:0,18 [2] x:\dir\subdir\Test\TestComponent.cshtml)
+                    IntermediateToken - (18:0,18 [2] x:\dir\subdir\Test\TestComponent.cshtml) - Html - \n
+                MarkupElement - (20:1,0 [53] x:\dir\subdir\Test\TestComponent.cshtml) - DefinitelyNotAComponent

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentDesignTimeCodeGenerationTest/Element_WithKey_AttributeNameIsCaseSensitive/TestComponent.codegen.cs

@@ -0,0 +1,35 @@
+// <auto-generated/>
+#pragma warning disable 1591
+namespace Test
+{
+    #line hidden
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Threading.Tasks;
+    using Microsoft.AspNetCore.Components;
+    public class TestComponent : Microsoft.AspNetCore.Components.ComponentBase
+    {
+        #pragma warning disable 219
+        private void __RazorDirectiveTokenHelpers__() {
+        }
+        #pragma warning restore 219
+        #pragma warning disable 0414
+        private static System.Object __o = null;
+        #pragma warning restore 0414
+        #pragma warning disable 1998
+        protected override void BuildRenderTree(Microsoft.AspNetCore.Components.RenderTree.RenderTreeBuilder builder)
+        {
+        }
+        #pragma warning restore 1998
+#nullable restore
+#line 3 "x:\dir\subdir\Test\TestComponent.cshtml"
+       
+    private object someObject = new object();
+
+#line default
+#line hidden
+#nullable disable
+    }
+}
+#pragma warning restore 1591

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentDesignTimeCodeGenerationTest/Element_WithKey_AttributeNameIsCaseSensitive/TestComponent.ir.txt

@@ -0,0 +1,34 @@
+Document - 
+    NamespaceDeclaration -  - Test
+        UsingDirective - (3:1,1 [12] ) - System
+        UsingDirective - (18:2,1 [32] ) - System.Collections.Generic
+        UsingDirective - (53:3,1 [17] ) - System.Linq
+        UsingDirective - (73:4,1 [28] ) - System.Threading.Tasks
+        UsingDirective - (104:5,1 [37] ) - Microsoft.AspNetCore.Components
+        ClassDeclaration -  - public - TestComponent - Microsoft.AspNetCore.Components.ComponentBase - 
+            DesignTimeDirective - 
+            CSharpCode - 
+                IntermediateToken -  - CSharp - #pragma warning disable 0414
+            CSharpCode - 
+                IntermediateToken -  - CSharp - private static System.Object __o = null;
+            CSharpCode - 
+                IntermediateToken -  - CSharp - #pragma warning restore 0414
+            MethodDeclaration -  - protected override - void - BuildRenderTree
+                MarkupElement - (0:0,0 [84] x:\dir\subdir\Test\TestComponent.cshtml) - elem
+                    HtmlAttribute - (5:0,5 [25] x:\dir\subdir\Test\TestComponent.cshtml) -  attributebefore=" - "
+                        HtmlAttributeValue - (23:0,23 [6] x:\dir\subdir\Test\TestComponent.cshtml) - 
+                            IntermediateToken - (23:0,23 [6] x:\dir\subdir\Test\TestComponent.cshtml) - Html - before
+                    HtmlAttribute - (30:0,30 [18] x:\dir\subdir\Test\TestComponent.cshtml) -  @KEY=" - "
+                        HtmlAttributeValue - (37:0,37 [10] x:\dir\subdir\Test\TestComponent.cshtml) - 
+                            IntermediateToken - (37:0,37 [10] x:\dir\subdir\Test\TestComponent.cshtml) - Html - someObject
+                    HtmlAttribute - (48:0,48 [23] x:\dir\subdir\Test\TestComponent.cshtml) -  attributeafter=" - "
+                        HtmlAttributeValue - (65:0,65 [5] x:\dir\subdir\Test\TestComponent.cshtml) - 
+                            IntermediateToken - (65:0,65 [5] x:\dir\subdir\Test\TestComponent.cshtml) - Html - after
+                    HtmlContent - (72:0,72 [5] x:\dir\subdir\Test\TestComponent.cshtml)
+                        IntermediateToken - (72:0,72 [5] x:\dir\subdir\Test\TestComponent.cshtml) - Html - Hello
+                HtmlContent - (84:0,84 [4] x:\dir\subdir\Test\TestComponent.cshtml)
+                    IntermediateToken - (84:0,84 [4] x:\dir\subdir\Test\TestComponent.cshtml) - Html - \n\n
+                HtmlContent - (145:4,1 [2] x:\dir\subdir\Test\TestComponent.cshtml)
+                    IntermediateToken - (145:4,1 [2] x:\dir\subdir\Test\TestComponent.cshtml) - Html - \n
+            CSharpCode - (95:2,7 [49] x:\dir\subdir\Test\TestComponent.cshtml)
+                IntermediateToken - (95:2,7 [49] x:\dir\subdir\Test\TestComponent.cshtml) - CSharp - \n    private object someObject = new object();\n

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentDesignTimeCodeGenerationTest/Element_WithKey_AttributeNameIsCaseSensitive/TestComponent.mappings.txt

@@ -0,0 +1,9 @@
+Source Location: (95:2,7 [49] x:\dir\subdir\Test\TestComponent.cshtml)
+|
+    private object someObject = new object();
+|
+Generated Location: (899:26,7 [49] )
+|
+    private object someObject = new object();
+|
+

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentDesignTimeCodeGenerationTest/Element_WithRef_AttributeNameIsCaseSensitive/TestComponent.codegen.cs

@@ -0,0 +1,27 @@
+// <auto-generated/>
+#pragma warning disable 1591
+namespace Test
+{
+    #line hidden
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Threading.Tasks;
+    using Microsoft.AspNetCore.Components;
+    public class TestComponent : Microsoft.AspNetCore.Components.ComponentBase
+    {
+        #pragma warning disable 219
+        private void __RazorDirectiveTokenHelpers__() {
+        }
+        #pragma warning restore 219
+        #pragma warning disable 0414
+        private static System.Object __o = null;
+        #pragma warning restore 0414
+        #pragma warning disable 1998
+        protected override void BuildRenderTree(Microsoft.AspNetCore.Components.RenderTree.RenderTreeBuilder builder)
+        {
+        }
+        #pragma warning restore 1998
+    }
+}
+#pragma warning restore 1591

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentDesignTimeCodeGenerationTest/Element_WithRef_AttributeNameIsCaseSensitive/TestComponent.ir.txt

@@ -0,0 +1,28 @@
+Document - 
+    NamespaceDeclaration -  - Test
+        UsingDirective - (3:1,1 [12] ) - System
+        UsingDirective - (18:2,1 [32] ) - System.Collections.Generic
+        UsingDirective - (53:3,1 [17] ) - System.Linq
+        UsingDirective - (73:4,1 [28] ) - System.Threading.Tasks
+        UsingDirective - (104:5,1 [37] ) - Microsoft.AspNetCore.Components
+        ClassDeclaration -  - public - TestComponent - Microsoft.AspNetCore.Components.ComponentBase - 
+            DesignTimeDirective - 
+            CSharpCode - 
+                IntermediateToken -  - CSharp - #pragma warning disable 0414
+            CSharpCode - 
+                IntermediateToken -  - CSharp - private static System.Object __o = null;
+            CSharpCode - 
+                IntermediateToken -  - CSharp - #pragma warning restore 0414
+            MethodDeclaration -  - protected override - void - BuildRenderTree
+                MarkupElement - (0:0,0 [80] x:\dir\subdir\Test\TestComponent.cshtml) - elem
+                    HtmlAttribute - (5:0,5 [25] x:\dir\subdir\Test\TestComponent.cshtml) -  attributebefore=" - "
+                        HtmlAttributeValue - (23:0,23 [6] x:\dir\subdir\Test\TestComponent.cshtml) - 
+                            IntermediateToken - (23:0,23 [6] x:\dir\subdir\Test\TestComponent.cshtml) - Html - before
+                    HtmlAttribute - (30:0,30 [14] x:\dir\subdir\Test\TestComponent.cshtml) -  @rEF=" - "
+                        HtmlAttributeValue - (37:0,37 [6] x:\dir\subdir\Test\TestComponent.cshtml) - 
+                            IntermediateToken - (37:0,37 [6] x:\dir\subdir\Test\TestComponent.cshtml) - Html - myElem
+                    HtmlAttribute - (44:0,44 [23] x:\dir\subdir\Test\TestComponent.cshtml) -  attributeafter=" - "
+                        HtmlAttributeValue - (61:0,61 [5] x:\dir\subdir\Test\TestComponent.cshtml) - 
+                            IntermediateToken - (61:0,61 [5] x:\dir\subdir\Test\TestComponent.cshtml) - Html - after
+                    HtmlContent - (68:0,68 [5] x:\dir\subdir\Test\TestComponent.cshtml)
+                        IntermediateToken - (68:0,68 [5] x:\dir\subdir\Test\TestComponent.cshtml) - Html - Hello

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentDesignTimeCodeGenerationTest/Element_WithSplat_AttributeNameIsCaseSensitive/TestComponent.codegen.cs

@@ -0,0 +1,35 @@
+// <auto-generated/>
+#pragma warning disable 1591
+namespace Test
+{
+    #line hidden
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Threading.Tasks;
+    using Microsoft.AspNetCore.Components;
+    public class TestComponent : Microsoft.AspNetCore.Components.ComponentBase
+    {
+        #pragma warning disable 219
+        private void __RazorDirectiveTokenHelpers__() {
+        }
+        #pragma warning restore 219
+        #pragma warning disable 0414
+        private static System.Object __o = null;
+        #pragma warning restore 0414
+        #pragma warning disable 1998
+        protected override void BuildRenderTree(Microsoft.AspNetCore.Components.RenderTree.RenderTreeBuilder builder)
+        {
+        }
+        #pragma warning restore 1998
+#nullable restore
+#line 3 "x:\dir\subdir\Test\TestComponent.cshtml"
+       
+    private Dictionary<string, object> someAttributes = new Dictionary<string, object>();
+
+#line default
+#line hidden
+#nullable disable
+    }
+}
+#pragma warning restore 1591

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentDesignTimeCodeGenerationTest/Element_WithSplat_AttributeNameIsCaseSensitive/TestComponent.ir.txt

@@ -0,0 +1,34 @@
+Document - 
+    NamespaceDeclaration -  - Test
+        UsingDirective - (3:1,1 [12] ) - System
+        UsingDirective - (18:2,1 [32] ) - System.Collections.Generic
+        UsingDirective - (53:3,1 [17] ) - System.Linq
+        UsingDirective - (73:4,1 [28] ) - System.Threading.Tasks
+        UsingDirective - (104:5,1 [37] ) - Microsoft.AspNetCore.Components
+        ClassDeclaration -  - public - TestComponent - Microsoft.AspNetCore.Components.ComponentBase - 
+            DesignTimeDirective - 
+            CSharpCode - 
+                IntermediateToken -  - CSharp - #pragma warning disable 0414
+            CSharpCode - 
+                IntermediateToken -  - CSharp - private static System.Object __o = null;
+            CSharpCode - 
+                IntermediateToken -  - CSharp - #pragma warning restore 0414
+            MethodDeclaration -  - protected override - void - BuildRenderTree
+                MarkupElement - (0:0,0 [95] x:\dir\subdir\Test\TestComponent.cshtml) - elem
+                    HtmlAttribute - (5:0,5 [25] x:\dir\subdir\Test\TestComponent.cshtml) -  attributebefore=" - "
+                        HtmlAttributeValue - (23:0,23 [6] x:\dir\subdir\Test\TestComponent.cshtml) - 
+                            IntermediateToken - (23:0,23 [6] x:\dir\subdir\Test\TestComponent.cshtml) - Html - before
+                    HtmlAttribute - (30:0,30 [29] x:\dir\subdir\Test\TestComponent.cshtml) -  @ATTributes=" - "
+                        HtmlAttributeValue - (44:0,44 [14] x:\dir\subdir\Test\TestComponent.cshtml) - 
+                            IntermediateToken - (44:0,44 [14] x:\dir\subdir\Test\TestComponent.cshtml) - Html - someAttributes
+                    HtmlAttribute - (59:0,59 [23] x:\dir\subdir\Test\TestComponent.cshtml) -  attributeafter=" - "
+                        HtmlAttributeValue - (76:0,76 [5] x:\dir\subdir\Test\TestComponent.cshtml) - 
+                            IntermediateToken - (76:0,76 [5] x:\dir\subdir\Test\TestComponent.cshtml) - Html - after
+                    HtmlContent - (83:0,83 [5] x:\dir\subdir\Test\TestComponent.cshtml)
+                        IntermediateToken - (83:0,83 [5] x:\dir\subdir\Test\TestComponent.cshtml) - Html - Hello
+                HtmlContent - (95:0,95 [4] x:\dir\subdir\Test\TestComponent.cshtml)
+                    IntermediateToken - (95:0,95 [4] x:\dir\subdir\Test\TestComponent.cshtml) - Html - \n\n
+                HtmlContent - (200:4,1 [2] x:\dir\subdir\Test\TestComponent.cshtml)
+                    IntermediateToken - (200:4,1 [2] x:\dir\subdir\Test\TestComponent.cshtml) - Html - \n
+            CSharpCode - (106:2,7 [93] x:\dir\subdir\Test\TestComponent.cshtml)
+                IntermediateToken - (106:2,7 [93] x:\dir\subdir\Test\TestComponent.cshtml) - CSharp - \n    private Dictionary<string, object> someAttributes = new Dictionary<string, object>();\n

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentDesignTimeCodeGenerationTest/Element_WithSplat_AttributeNameIsCaseSensitive/TestComponent.mappings.txt

@@ -0,0 +1,9 @@
+Source Location: (106:2,7 [93] x:\dir\subdir\Test\TestComponent.cshtml)
+|
+    private Dictionary<string, object> someAttributes = new Dictionary<string, object>();
+|
+Generated Location: (899:26,7 [93] )
+|
+    private Dictionary<string, object> someAttributes = new Dictionary<string, object>();
+|
+

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentDesignTimeCodeGenerationTest/EventHandler_AttributeNameIsCaseSensitive/TestComponent.codegen.cs

@@ -0,0 +1,36 @@
+// <auto-generated/>
+#pragma warning disable 1591
+namespace Test
+{
+    #line hidden
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Threading.Tasks;
+    using Microsoft.AspNetCore.Components;
+    public class TestComponent : Microsoft.AspNetCore.Components.ComponentBase
+    {
+        #pragma warning disable 219
+        private void __RazorDirectiveTokenHelpers__() {
+        }
+        #pragma warning restore 219
+        #pragma warning disable 0414
+        private static System.Object __o = null;
+        #pragma warning restore 0414
+        #pragma warning disable 1998
+        protected override void BuildRenderTree(Microsoft.AspNetCore.Components.RenderTree.RenderTreeBuilder builder)
+        {
+        }
+        #pragma warning restore 1998
+#nullable restore
+#line 2 "x:\dir\subdir\Test\TestComponent.cshtml"
+       
+    void OnClick(UIMouseEventArgs e) {
+    }
+
+#line default
+#line hidden
+#nullable disable
+    }
+}
+#pragma warning restore 1591

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentDesignTimeCodeGenerationTest/EventHandler_AttributeNameIsCaseSensitive/TestComponent.ir.txt

@@ -0,0 +1,24 @@
+Document - 
+    NamespaceDeclaration -  - Test
+        UsingDirective - (3:1,1 [12] ) - System
+        UsingDirective - (18:2,1 [32] ) - System.Collections.Generic
+        UsingDirective - (53:3,1 [17] ) - System.Linq
+        UsingDirective - (73:4,1 [28] ) - System.Threading.Tasks
+        UsingDirective - (104:5,1 [37] ) - Microsoft.AspNetCore.Components
+        ClassDeclaration -  - public - TestComponent - Microsoft.AspNetCore.Components.ComponentBase - 
+            DesignTimeDirective - 
+            CSharpCode - 
+                IntermediateToken -  - CSharp - #pragma warning disable 0414
+            CSharpCode - 
+                IntermediateToken -  - CSharp - private static System.Object __o = null;
+            CSharpCode - 
+                IntermediateToken -  - CSharp - #pragma warning restore 0414
+            MethodDeclaration -  - protected override - void - BuildRenderTree
+                MarkupElement - (0:0,0 [28] x:\dir\subdir\Test\TestComponent.cshtml) - input
+                    HtmlAttribute - (6:0,6 [19] x:\dir\subdir\Test\TestComponent.cshtml) -  @onCLICK=" - "
+                        HtmlAttributeValue - (17:0,17 [7] x:\dir\subdir\Test\TestComponent.cshtml) - 
+                            IntermediateToken - (17:0,17 [7] x:\dir\subdir\Test\TestComponent.cshtml) - Html - OnClick
+                HtmlContent - (28:0,28 [2] x:\dir\subdir\Test\TestComponent.cshtml)
+                    IntermediateToken - (28:0,28 [2] x:\dir\subdir\Test\TestComponent.cshtml) - Html - \n
+            CSharpCode - (37:1,7 [49] x:\dir\subdir\Test\TestComponent.cshtml)
+                IntermediateToken - (37:1,7 [49] x:\dir\subdir\Test\TestComponent.cshtml) - CSharp - \n    void OnClick(UIMouseEventArgs e) {\n    }\n

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentDesignTimeCodeGenerationTest/EventHandler_AttributeNameIsCaseSensitive/TestComponent.mappings.txt

@@ -0,0 +1,11 @@
+Source Location: (37:1,7 [49] x:\dir\subdir\Test\TestComponent.cshtml)
+|
+    void OnClick(UIMouseEventArgs e) {
+    }
+|
+Generated Location: (899:26,7 [49] )
+|
+    void OnClick(UIMouseEventArgs e) {
+    }
+|
+

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentRuntimeCodeGenerationTest/BuiltIn_BindToInputWithoutType_IsCaseSensitive/TestComponent.codegen.cs

@@ -0,0 +1,39 @@
+// <auto-generated/>
+#pragma warning disable 1591
+namespace Test
+{
+    #line hidden
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Threading.Tasks;
+    using Microsoft.AspNetCore.Components;
+    public class TestComponent : Microsoft.AspNetCore.Components.ComponentBase
+    {
+        #pragma warning disable 1998
+        protected override void BuildRenderTree(Microsoft.AspNetCore.Components.RenderTree.RenderTreeBuilder builder)
+        {
+            builder.OpenElement(0, "input");
+            builder.AddAttribute(1, "@BIND", 
+#nullable restore
+#line 1 "x:\dir\subdir\Test\TestComponent.cshtml"
+               ParentValue
+
+#line default
+#line hidden
+#nullable disable
+            );
+            builder.CloseElement();
+        }
+        #pragma warning restore 1998
+#nullable restore
+#line 2 "x:\dir\subdir\Test\TestComponent.cshtml"
+       
+    public int ParentValue { get; set; } = 42;
+
+#line default
+#line hidden
+#nullable disable
+    }
+}
+#pragma warning restore 1591

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentRuntimeCodeGenerationTest/BuiltIn_BindToInputWithoutType_IsCaseSensitive/TestComponent.ir.txt

@@ -0,0 +1,15 @@
+Document - 
+    NamespaceDeclaration -  - Test
+        UsingDirective - (3:1,1 [14] ) - System
+        UsingDirective - (18:2,1 [34] ) - System.Collections.Generic
+        UsingDirective - (53:3,1 [19] ) - System.Linq
+        UsingDirective - (73:4,1 [30] ) - System.Threading.Tasks
+        UsingDirective - (104:5,1 [39] ) - Microsoft.AspNetCore.Components
+        ClassDeclaration -  - public - TestComponent - Microsoft.AspNetCore.Components.ComponentBase - 
+            MethodDeclaration -  - protected override - void - BuildRenderTree
+                MarkupElement - (0:0,0 [30] x:\dir\subdir\Test\TestComponent.cshtml) - input
+                    HtmlAttribute - (6:0,6 [21] x:\dir\subdir\Test\TestComponent.cshtml) -  @BIND=" - "
+                        CSharpExpressionAttributeValue - (14:0,14 [12] x:\dir\subdir\Test\TestComponent.cshtml) - 
+                            IntermediateToken - (15:0,15 [11] x:\dir\subdir\Test\TestComponent.cshtml) - CSharp - ParentValue
+            CSharpCode - (39:1,7 [50] x:\dir\subdir\Test\TestComponent.cshtml)
+                IntermediateToken - (39:1,7 [50] x:\dir\subdir\Test\TestComponent.cshtml) - CSharp - \n    public int ParentValue { get; set; } = 42;\n

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentRuntimeCodeGenerationTest/BuiltIn_BindToInputWithoutType_IsCaseSensitive/TestComponent.mappings.txt

@@ -0,0 +1,9 @@
+Source Location: (39:1,7 [50] x:\dir\subdir\Test\TestComponent.cshtml)
+|
+    public int ParentValue { get; set; } = 42;
+|
+Generated Location: (925:30,7 [50] )
+|
+    public int ParentValue { get; set; } = 42;
+|
+

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentRuntimeCodeGenerationTest/Component_IgnoresStaticAndAliasUsings/TestComponent.codegen.cs

@@ -29,7 +29,9 @@ using Foo = Test3;
         {
             builder.OpenComponent<Test.MyComponent>(0);
             builder.CloseComponent();
-            builder.AddMarkupContent(1, "\r\n<SomeComponent></SomeComponent>");
+            builder.AddMarkupContent(1, "\r\n");
+            builder.OpenElement(2, "SomeComponent");
+            builder.CloseElement();
         }
         #pragma warning restore 1998
     }

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentRuntimeCodeGenerationTest/Component_IgnoresStaticAndAliasUsings/TestComponent.diagnostics.txt

@@ -0,0 +1 @@
+x:\dir\subdir\Test\TestComponent.cshtml(4,1): Warning RZ10014: Found markup element with unexpected name 'SomeComponent'. If this is intended to be a component, add a @using directive for its namespace.

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentRuntimeCodeGenerationTest/Component_IgnoresStaticAndAliasUsings/TestComponent.ir.txt

@@ -10,4 +10,6 @@ Document -
         ClassDeclaration -  - public - TestComponent - Microsoft.AspNetCore.Components.ComponentBase - 
             MethodDeclaration -  - protected override - void - BuildRenderTree
                 Component - (55:2,0 [15] x:\dir\subdir\Test\TestComponent.cshtml) - MyComponent
-                MarkupBlock -  - \n<SomeComponent></SomeComponent>
+                HtmlContent - (70:2,15 [2] x:\dir\subdir\Test\TestComponent.cshtml)
+                    IntermediateToken - (70:2,15 [2] x:\dir\subdir\Test\TestComponent.cshtml) - Html - \n
+                MarkupElement - (72:3,0 [17] x:\dir\subdir\Test\TestComponent.cshtml) - SomeComponent

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentRuntimeCodeGenerationTest/Component_MatchingIsCaseSensitive/TestComponent.codegen.cs

@@ -0,0 +1,35 @@
+// <auto-generated/>
+#pragma warning disable 1591
+namespace Test
+{
+    #line hidden
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Threading.Tasks;
+    using Microsoft.AspNetCore.Components;
+    public class TestComponent : Microsoft.AspNetCore.Components.ComponentBase
+    {
+        #pragma warning disable 1998
+        protected override void BuildRenderTree(Microsoft.AspNetCore.Components.RenderTree.RenderTreeBuilder builder)
+        {
+            builder.OpenComponent<Test.MyComponent>(0);
+            builder.CloseComponent();
+            builder.AddMarkupContent(1, "\r\n<mycomponent></mycomponent>\r\n");
+            builder.OpenComponent<Test.MyComponent>(2);
+            builder.AddAttribute(3, "intproperty", "1");
+            builder.AddAttribute(4, "BoolProperty", Microsoft.AspNetCore.Components.RuntimeHelpers.TypeCheck<System.Boolean>(
+#nullable restore
+#line 3 "x:\dir\subdir\Test\TestComponent.cshtml"
+                                           true
+
+#line default
+#line hidden
+#nullable disable
+            ));
+            builder.CloseComponent();
+        }
+        #pragma warning restore 1998
+    }
+}
+#pragma warning restore 1591

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentRuntimeCodeGenerationTest/Component_MatchingIsCaseSensitive/TestComponent.ir.txt

@@ -0,0 +1,17 @@
+Document - 
+    NamespaceDeclaration -  - Test
+        UsingDirective - (3:1,1 [14] ) - System
+        UsingDirective - (18:2,1 [34] ) - System.Collections.Generic
+        UsingDirective - (53:3,1 [19] ) - System.Linq
+        UsingDirective - (73:4,1 [30] ) - System.Threading.Tasks
+        UsingDirective - (104:5,1 [39] ) - Microsoft.AspNetCore.Components
+        ClassDeclaration -  - public - TestComponent - Microsoft.AspNetCore.Components.ComponentBase - 
+            MethodDeclaration -  - protected override - void - BuildRenderTree
+                Component - (0:0,0 [15] x:\dir\subdir\Test\TestComponent.cshtml) - MyComponent
+                MarkupBlock -  - \n<mycomponent></mycomponent>\n
+                Component - (34:2,0 [51] x:\dir\subdir\Test\TestComponent.cshtml) - MyComponent
+                    ComponentAttribute -  - intproperty - AttributeStructure.SingleQuotes
+                        HtmlContent - (60:2,26 [1] x:\dir\subdir\Test\TestComponent.cshtml)
+                            IntermediateToken - (60:2,26 [1] x:\dir\subdir\Test\TestComponent.cshtml) - Html - 1
+                    ComponentAttribute - (77:2,43 [4] x:\dir\subdir\Test\TestComponent.cshtml) - BoolProperty - AttributeStructure.SingleQuotes
+                        IntermediateToken - (77:2,43 [4] x:\dir\subdir\Test\TestComponent.cshtml) - CSharp - true

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentRuntimeCodeGenerationTest/Component_MultipleComponentsDifferByCase/TestComponent.codegen.cs

@@ -0,0 +1,43 @@
+// <auto-generated/>
+#pragma warning disable 1591
+namespace Test
+{
+    #line hidden
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Threading.Tasks;
+    using Microsoft.AspNetCore.Components;
+    public class TestComponent : Microsoft.AspNetCore.Components.ComponentBase
+    {
+        #pragma warning disable 1998
+        protected override void BuildRenderTree(Microsoft.AspNetCore.Components.RenderTree.RenderTreeBuilder builder)
+        {
+            builder.OpenComponent<Test.MyComponent>(0);
+            builder.AddAttribute(1, "IntProperty", Microsoft.AspNetCore.Components.RuntimeHelpers.TypeCheck<System.Int32>(
+#nullable restore
+#line 1 "x:\dir\subdir\Test\TestComponent.cshtml"
+                          1
+
+#line default
+#line hidden
+#nullable disable
+            ));
+            builder.CloseComponent();
+            builder.AddMarkupContent(2, "\r\n");
+            builder.OpenComponent<Test.Mycomponent>(3);
+            builder.AddAttribute(4, "IntProperty", Microsoft.AspNetCore.Components.RuntimeHelpers.TypeCheck<System.Int32>(
+#nullable restore
+#line 2 "x:\dir\subdir\Test\TestComponent.cshtml"
+                          2
+
+#line default
+#line hidden
+#nullable disable
+            ));
+            builder.CloseComponent();
+        }
+        #pragma warning restore 1998
+    }
+}
+#pragma warning restore 1591

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentRuntimeCodeGenerationTest/Component_MultipleComponentsDifferByCase/TestComponent.ir.txt

@@ -0,0 +1,17 @@
+Document - 
+    NamespaceDeclaration -  - Test
+        UsingDirective - (3:1,1 [14] ) - System
+        UsingDirective - (18:2,1 [34] ) - System.Collections.Generic
+        UsingDirective - (53:3,1 [19] ) - System.Linq
+        UsingDirective - (73:4,1 [30] ) - System.Threading.Tasks
+        UsingDirective - (104:5,1 [39] ) - Microsoft.AspNetCore.Components
+        ClassDeclaration -  - public - TestComponent - Microsoft.AspNetCore.Components.ComponentBase - 
+            MethodDeclaration -  - protected override - void - BuildRenderTree
+                Component - (0:0,0 [31] x:\dir\subdir\Test\TestComponent.cshtml) - MyComponent
+                    ComponentAttribute - (26:0,26 [1] x:\dir\subdir\Test\TestComponent.cshtml) - IntProperty - AttributeStructure.SingleQuotes
+                        IntermediateToken - (26:0,26 [1] x:\dir\subdir\Test\TestComponent.cshtml) - CSharp - 1
+                HtmlContent - (31:0,31 [2] x:\dir\subdir\Test\TestComponent.cshtml)
+                    IntermediateToken - (31:0,31 [2] x:\dir\subdir\Test\TestComponent.cshtml) - Html - \n
+                Component - (33:1,0 [31] x:\dir\subdir\Test\TestComponent.cshtml) - Mycomponent
+                    ComponentAttribute - (59:1,26 [1] x:\dir\subdir\Test\TestComponent.cshtml) - IntProperty - AttributeStructure.SingleQuotes
+                        IntermediateToken - (59:1,26 [1] x:\dir\subdir\Test\TestComponent.cshtml) - CSharp - 2

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentRuntimeCodeGenerationTest/DuplicateMarkupAttributes_DifferentCasing_IsAnError_BindValue/TestComponent.codegen.cs

@@ -0,0 +1,47 @@
+// <auto-generated/>
+#pragma warning disable 1591
+namespace Test
+{
+    #line hidden
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Threading.Tasks;
+    using Microsoft.AspNetCore.Components;
+    public class TestComponent : Microsoft.AspNetCore.Components.ComponentBase
+    {
+        #pragma warning disable 1998
+        protected override void BuildRenderTree(Microsoft.AspNetCore.Components.RenderTree.RenderTreeBuilder builder)
+        {
+            builder.OpenElement(0, "div");
+            builder.AddMarkupContent(1, "\r\n  ");
+            builder.OpenElement(2, "input");
+            builder.AddAttribute(3, "type", "text");
+            builder.AddAttribute(4, "Value", "17");
+            builder.AddAttribute(5, "value", Microsoft.AspNetCore.Components.BindMethods.GetValue(
+#nullable restore
+#line 2 "x:\dir\subdir\Test\TestComponent.cshtml"
+                                        text
+
+#line default
+#line hidden
+#nullable disable
+            ));
+            builder.AddAttribute(6, "onchange", Microsoft.AspNetCore.Components.EventCallback.Factory.CreateBinder(this, __value => text = __value, text));
+            builder.SetUpdatesAttributeName("value");
+            builder.CloseElement();
+            builder.AddMarkupContent(7, "\r\n");
+            builder.CloseElement();
+        }
+        #pragma warning restore 1998
+#nullable restore
+#line 4 "x:\dir\subdir\Test\TestComponent.cshtml"
+            
+    private string text = "hi";
+
+#line default
+#line hidden
+#nullable disable
+    }
+}
+#pragma warning restore 1591

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentRuntimeCodeGenerationTest/DuplicateMarkupAttributes_DifferentCasing_IsAnError_BindValue/TestComponent.diagnostics.txt

@@ -0,0 +1 @@
+x:\dir\subdir\Test\TestComponent.cshtml(2,3): Error RZ10008: The attribute 'Value' is used two or more times for this element. Attributes must be unique (case-insensitive). The attribute 'Value' is used by the '@bind' directive attribute.

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentRuntimeCodeGenerationTest/DuplicateMarkupAttributes_DifferentCasing_IsAnError_BindValue/TestComponent.ir.txt

@@ -0,0 +1,33 @@
+Document - 
+    NamespaceDeclaration -  - Test
+        UsingDirective - (3:1,1 [14] ) - System
+        UsingDirective - (18:2,1 [34] ) - System.Collections.Generic
+        UsingDirective - (53:3,1 [19] ) - System.Linq
+        UsingDirective - (73:4,1 [30] ) - System.Threading.Tasks
+        UsingDirective - (104:5,1 [39] ) - Microsoft.AspNetCore.Components
+        ClassDeclaration -  - public - TestComponent - Microsoft.AspNetCore.Components.ComponentBase - 
+            MethodDeclaration -  - protected override - void - BuildRenderTree
+                MarkupElement - (0:0,0 [69] x:\dir\subdir\Test\TestComponent.cshtml) - div
+                    HtmlContent - (5:0,5 [4] x:\dir\subdir\Test\TestComponent.cshtml)
+                        IntermediateToken - (5:0,5 [4] x:\dir\subdir\Test\TestComponent.cshtml) - Html - \n  
+                    MarkupElement - (9:1,2 [52] x:\dir\subdir\Test\TestComponent.cshtml) - input
+                        HtmlAttribute -  - type=" - "
+                            HtmlAttributeValue - (22:1,15 [4] x:\dir\subdir\Test\TestComponent.cshtml) - 
+                                IntermediateToken - (22:1,15 [4] x:\dir\subdir\Test\TestComponent.cshtml) - Html - text
+                        HtmlAttribute -  - Value=" - "
+                            HtmlAttributeValue - (35:1,28 [2] x:\dir\subdir\Test\TestComponent.cshtml) - 
+                                IntermediateToken - (35:1,28 [2] x:\dir\subdir\Test\TestComponent.cshtml) - Html - 17
+                        HtmlAttribute - (46:1,39 [5] x:\dir\subdir\Test\TestComponent.cshtml) - value=" - "
+                            CSharpExpressionAttributeValue -  - 
+                                IntermediateToken -  - CSharp - Microsoft.AspNetCore.Components.BindMethods.GetValue(
+                                IntermediateToken - (47:1,40 [4] x:\dir\subdir\Test\TestComponent.cshtml) - CSharp - text
+                                IntermediateToken -  - CSharp - )
+                        HtmlAttribute - (46:1,39 [5] x:\dir\subdir\Test\TestComponent.cshtml) - onchange=" - "
+                            CSharpExpressionAttributeValue -  - 
+                                IntermediateToken -  - CSharp - Microsoft.AspNetCore.Components.EventCallback.Factory.CreateBinder(this, __value => text = __value, 
+                                IntermediateToken -  - CSharp - text
+                                IntermediateToken -  - CSharp - )
+                    HtmlContent - (61:1,54 [2] x:\dir\subdir\Test\TestComponent.cshtml)
+                        IntermediateToken - (61:1,54 [2] x:\dir\subdir\Test\TestComponent.cshtml) - Html - \n
+            CSharpCode - (83:3,12 [35] x:\dir\subdir\Test\TestComponent.cshtml)
+                IntermediateToken - (83:3,12 [35] x:\dir\subdir\Test\TestComponent.cshtml) - CSharp - \n    private string text = "hi";\n

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentRuntimeCodeGenerationTest/DuplicateMarkupAttributes_DifferentCasing_IsAnError_BindValue/TestComponent.mappings.txt

@@ -0,0 +1,9 @@
+Source Location: (83:3,12 [35] x:\dir\subdir\Test\TestComponent.cshtml)
+|
+    private string text = "hi";
+|
+Generated Location: (1504:38,12 [35] )
+|
+    private string text = "hi";
+|
+

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentRuntimeCodeGenerationTest/ElementWithUppercaseTagName_CanHideWarningWithBang/TestComponent.codegen.cs

@@ -0,0 +1,21 @@
+// <auto-generated/>
+#pragma warning disable 1591
+namespace Test
+{
+    #line hidden
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Threading.Tasks;
+    using Microsoft.AspNetCore.Components;
+    public class TestComponent : Microsoft.AspNetCore.Components.ComponentBase
+    {
+        #pragma warning disable 1998
+        protected override void BuildRenderTree(Microsoft.AspNetCore.Components.RenderTree.RenderTreeBuilder builder)
+        {
+            builder.AddMarkupContent(0, "<NotAComponent></NotAComponent>\r\n<DefinitelyNotAComponent></DefinitelyNotAComponent>");
+        }
+        #pragma warning restore 1998
+    }
+}
+#pragma warning restore 1591

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentRuntimeCodeGenerationTest/ElementWithUppercaseTagName_CanHideWarningWithBang/TestComponent.ir.txt

@@ -0,0 +1,10 @@
+Document - 
+    NamespaceDeclaration -  - Test
+        UsingDirective - (3:1,1 [14] ) - System
+        UsingDirective - (18:2,1 [34] ) - System.Collections.Generic
+        UsingDirective - (53:3,1 [19] ) - System.Linq
+        UsingDirective - (73:4,1 [30] ) - System.Threading.Tasks
+        UsingDirective - (104:5,1 [39] ) - Microsoft.AspNetCore.Components
+        ClassDeclaration -  - public - TestComponent - Microsoft.AspNetCore.Components.ComponentBase - 
+            MethodDeclaration -  - protected override - void - BuildRenderTree
+                MarkupBlock -  - <NotAComponent></NotAComponent>\n<DefinitelyNotAComponent></DefinitelyNotAComponent>

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentRuntimeCodeGenerationTest/Element_WithKey_AttributeNameIsCaseSensitive/TestComponent.codegen.cs

@@ -0,0 +1,29 @@
+// <auto-generated/>
+#pragma warning disable 1591
+namespace Test
+{
+    #line hidden
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Threading.Tasks;
+    using Microsoft.AspNetCore.Components;
+    public class TestComponent : Microsoft.AspNetCore.Components.ComponentBase
+    {
+        #pragma warning disable 1998
+        protected override void BuildRenderTree(Microsoft.AspNetCore.Components.RenderTree.RenderTreeBuilder builder)
+        {
+            builder.AddMarkupContent(0, "<elem attributebefore=\"before\" @KEY=\"someObject\" attributeafter=\"after\">Hello</elem>");
+        }
+        #pragma warning restore 1998
+#nullable restore
+#line 3 "x:\dir\subdir\Test\TestComponent.cshtml"
+       
+    private object someObject = new object();
+
+#line default
+#line hidden
+#nullable disable
+    }
+}
+#pragma warning restore 1591

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentRuntimeCodeGenerationTest/Element_WithKey_AttributeNameIsCaseSensitive/TestComponent.ir.txt

@@ -0,0 +1,12 @@
+Document - 
+    NamespaceDeclaration -  - Test
+        UsingDirective - (3:1,1 [14] ) - System
+        UsingDirective - (18:2,1 [34] ) - System.Collections.Generic
+        UsingDirective - (53:3,1 [19] ) - System.Linq
+        UsingDirective - (73:4,1 [30] ) - System.Threading.Tasks
+        UsingDirective - (104:5,1 [39] ) - Microsoft.AspNetCore.Components
+        ClassDeclaration -  - public - TestComponent - Microsoft.AspNetCore.Components.ComponentBase - 
+            MethodDeclaration -  - protected override - void - BuildRenderTree
+                MarkupBlock -  - <elem attributebefore="before" @KEY="someObject" attributeafter="after">Hello</elem>
+            CSharpCode - (95:2,7 [49] x:\dir\subdir\Test\TestComponent.cshtml)
+                IntermediateToken - (95:2,7 [49] x:\dir\subdir\Test\TestComponent.cshtml) - CSharp - \n    private object someObject = new object();\n

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentRuntimeCodeGenerationTest/Element_WithKey_AttributeNameIsCaseSensitive/TestComponent.mappings.txt

@@ -0,0 +1,9 @@
+Source Location: (95:2,7 [49] x:\dir\subdir\Test\TestComponent.cshtml)
+|
+    private object someObject = new object();
+|
+Generated Location: (767:20,7 [49] )
+|
+    private object someObject = new object();
+|
+

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentRuntimeCodeGenerationTest/Element_WithRef_AttributeNameIsCaseSensitive/TestComponent.codegen.cs

@@ -0,0 +1,21 @@
+// <auto-generated/>
+#pragma warning disable 1591
+namespace Test
+{
+    #line hidden
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Threading.Tasks;
+    using Microsoft.AspNetCore.Components;
+    public class TestComponent : Microsoft.AspNetCore.Components.ComponentBase
+    {
+        #pragma warning disable 1998
+        protected override void BuildRenderTree(Microsoft.AspNetCore.Components.RenderTree.RenderTreeBuilder builder)
+        {
+            builder.AddMarkupContent(0, "<elem attributebefore=\"before\" @rEF=\"myElem\" attributeafter=\"after\">Hello</elem>");
+        }
+        #pragma warning restore 1998
+    }
+}
+#pragma warning restore 1591

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentRuntimeCodeGenerationTest/Element_WithRef_AttributeNameIsCaseSensitive/TestComponent.ir.txt

@@ -0,0 +1,10 @@
+Document - 
+    NamespaceDeclaration -  - Test
+        UsingDirective - (3:1,1 [14] ) - System
+        UsingDirective - (18:2,1 [34] ) - System.Collections.Generic
+        UsingDirective - (53:3,1 [19] ) - System.Linq
+        UsingDirective - (73:4,1 [30] ) - System.Threading.Tasks
+        UsingDirective - (104:5,1 [39] ) - Microsoft.AspNetCore.Components
+        ClassDeclaration -  - public - TestComponent - Microsoft.AspNetCore.Components.ComponentBase - 
+            MethodDeclaration -  - protected override - void - BuildRenderTree
+                MarkupBlock -  - <elem attributebefore="before" @rEF="myElem" attributeafter="after">Hello</elem>

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentRuntimeCodeGenerationTest/Element_WithSplat_AttributeNameIsCaseSensitive/TestComponent.codegen.cs

@@ -0,0 +1,29 @@
+// <auto-generated/>
+#pragma warning disable 1591
+namespace Test
+{
+    #line hidden
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Threading.Tasks;
+    using Microsoft.AspNetCore.Components;
+    public class TestComponent : Microsoft.AspNetCore.Components.ComponentBase
+    {
+        #pragma warning disable 1998
+        protected override void BuildRenderTree(Microsoft.AspNetCore.Components.RenderTree.RenderTreeBuilder builder)
+        {
+            builder.AddMarkupContent(0, "<elem attributebefore=\"before\" @ATTributes=\"someAttributes\" attributeafter=\"after\">Hello</elem>");
+        }
+        #pragma warning restore 1998
+#nullable restore
+#line 3 "x:\dir\subdir\Test\TestComponent.cshtml"
+       
+    private Dictionary<string, object> someAttributes = new Dictionary<string, object>();
+
+#line default
+#line hidden
+#nullable disable
+    }
+}
+#pragma warning restore 1591

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentRuntimeCodeGenerationTest/Element_WithSplat_AttributeNameIsCaseSensitive/TestComponent.ir.txt

@@ -0,0 +1,12 @@
+Document - 
+    NamespaceDeclaration -  - Test
+        UsingDirective - (3:1,1 [14] ) - System
+        UsingDirective - (18:2,1 [34] ) - System.Collections.Generic
+        UsingDirective - (53:3,1 [19] ) - System.Linq
+        UsingDirective - (73:4,1 [30] ) - System.Threading.Tasks
+        UsingDirective - (104:5,1 [39] ) - Microsoft.AspNetCore.Components
+        ClassDeclaration -  - public - TestComponent - Microsoft.AspNetCore.Components.ComponentBase - 
+            MethodDeclaration -  - protected override - void - BuildRenderTree
+                MarkupBlock -  - <elem attributebefore="before" @ATTributes="someAttributes" attributeafter="after">Hello</elem>
+            CSharpCode - (106:2,7 [93] x:\dir\subdir\Test\TestComponent.cshtml)
+                IntermediateToken - (106:2,7 [93] x:\dir\subdir\Test\TestComponent.cshtml) - CSharp - \n    private Dictionary<string, object> someAttributes = new Dictionary<string, object>();\n

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentRuntimeCodeGenerationTest/Element_WithSplat_AttributeNameIsCaseSensitive/TestComponent.mappings.txt

@@ -0,0 +1,9 @@
+Source Location: (106:2,7 [93] x:\dir\subdir\Test\TestComponent.cshtml)
+|
+    private Dictionary<string, object> someAttributes = new Dictionary<string, object>();
+|
+Generated Location: (778:20,7 [93] )
+|
+    private Dictionary<string, object> someAttributes = new Dictionary<string, object>();
+|
+

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentRuntimeCodeGenerationTest/EventHandler_AttributeNameIsCaseSensitive/TestComponent.codegen.cs

@@ -0,0 +1,30 @@
+// <auto-generated/>
+#pragma warning disable 1591
+namespace Test
+{
+    #line hidden
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Threading.Tasks;
+    using Microsoft.AspNetCore.Components;
+    public class TestComponent : Microsoft.AspNetCore.Components.ComponentBase
+    {
+        #pragma warning disable 1998
+        protected override void BuildRenderTree(Microsoft.AspNetCore.Components.RenderTree.RenderTreeBuilder builder)
+        {
+            builder.AddMarkupContent(0, "<input @onCLICK=\"OnClick\">");
+        }
+        #pragma warning restore 1998
+#nullable restore
+#line 2 "x:\dir\subdir\Test\TestComponent.cshtml"
+       
+    void OnClick(UIMouseEventArgs e) {
+    }
+
+#line default
+#line hidden
+#nullable disable
+    }
+}
+#pragma warning restore 1591

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentRuntimeCodeGenerationTest/EventHandler_AttributeNameIsCaseSensitive/TestComponent.ir.txt

@@ -0,0 +1,12 @@
+Document - 
+    NamespaceDeclaration -  - Test
+        UsingDirective - (3:1,1 [14] ) - System
+        UsingDirective - (18:2,1 [34] ) - System.Collections.Generic
+        UsingDirective - (53:3,1 [19] ) - System.Linq
+        UsingDirective - (73:4,1 [30] ) - System.Threading.Tasks
+        UsingDirective - (104:5,1 [39] ) - Microsoft.AspNetCore.Components
+        ClassDeclaration -  - public - TestComponent - Microsoft.AspNetCore.Components.ComponentBase - 
+            MethodDeclaration -  - protected override - void - BuildRenderTree
+                MarkupBlock -  - <input @onCLICK="OnClick">
+            CSharpCode - (37:1,7 [49] x:\dir\subdir\Test\TestComponent.cshtml)
+                IntermediateToken - (37:1,7 [49] x:\dir\subdir\Test\TestComponent.cshtml) - CSharp - \n    void OnClick(UIMouseEventArgs e) {\n    }\n

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/IntegrationTests/ComponentRuntimeCodeGenerationTest/EventHandler_AttributeNameIsCaseSensitive/TestComponent.mappings.txt

@@ -0,0 +1,11 @@
+Source Location: (37:1,7 [49] x:\dir\subdir\Test\TestComponent.cshtml)
+|
+    void OnClick(UIMouseEventArgs e) {
+    }
+|
+Generated Location: (705:20,7 [49] )
+|
+    void OnClick(UIMouseEventArgs e) {
+    }
+|
+

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/ParserTests/TagHelperParseTreeRewriterTest/HandlesCaseSensitiveTagHelpersCorrectly1.cspans.txt

@@ -0,0 +1 @@
+Markup span at (10:0,10 [3] ) (Accepts:Any) - Parent: Tag block at (0:0,0 [28] )

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/ParserTests/TagHelperParseTreeRewriterTest/HandlesCaseSensitiveTagHelpersCorrectly1.stree.txt

@@ -0,0 +1,31 @@
+RazorDocument - [0..28)::28 - [<p class='foo' catchAll></p>]
+    MarkupBlock - [0..28)::28
+        MarkupTagHelperElement - [0..28)::28 - p[StartTagAndEndTag] - pTagHelper - catchAllTagHelper
+            MarkupTagHelperStartTag - [0..24)::24 - [<p class='foo' catchAll>] - Gen<Markup> - SpanEditHandler;Accepts:Any
+                OpenAngle;[<];
+                Text;[p];
+                MarkupTagHelperAttribute - [2..14)::12 - class - SingleQuotes - Unbound - [ class='foo']
+                    MarkupTextLiteral - [2..3)::1 - [ ] - Gen<Markup> - SpanEditHandler;Accepts:Any
+                        Whitespace;[ ];
+                    MarkupTextLiteral - [3..8)::5 - [class] - Gen<Markup> - SpanEditHandler;Accepts:Any
+                        Text;[class];
+                    Equals;[=];
+                    MarkupTextLiteral - [9..10)::1 - ['] - Gen<None> - SpanEditHandler;Accepts:Any
+                        SingleQuote;['];
+                    MarkupTagHelperAttributeValue - [10..13)::3
+                        MarkupLiteralAttributeValue - [10..13)::3 - [foo]
+                            MarkupTextLiteral - [10..13)::3 - [foo] - Gen<Markup> - SpanEditHandler;Accepts:Any
+                                Text;[foo];
+                    MarkupTextLiteral - [13..14)::1 - ['] - Gen<None> - SpanEditHandler;Accepts:Any
+                        SingleQuote;['];
+                MarkupMinimizedTagHelperAttribute - [14..23)::9 - catchAll - Minimized - Unbound - [ catchAll]
+                    MarkupTextLiteral - [14..15)::1 - [ ] - Gen<Markup> - SpanEditHandler;Accepts:Any
+                        Whitespace;[ ];
+                    MarkupTextLiteral - [15..23)::8 - [catchAll] - Gen<Markup> - SpanEditHandler;Accepts:Any
+                        Text;[catchAll];
+                CloseAngle;[>];
+            MarkupTagHelperEndTag - [24..28)::4 - [</p>]
+                OpenAngle;[<];
+                ForwardSlash;[/];
+                Text;[p];
+                CloseAngle;[>];

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/ParserTests/TagHelperParseTreeRewriterTest/HandlesCaseSensitiveTagHelpersCorrectly1.tspans.txt

@@ -0,0 +1 @@
+TagHelper span at (0:0,0 [28] ) - pTagHelper - catchAllTagHelper

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/ParserTests/TagHelperParseTreeRewriterTest/HandlesCaseSensitiveTagHelpersCorrectly2.cspans.txt

@@ -0,0 +1 @@
+Markup span at (10:0,10 [3] ) (Accepts:Any) - Parent: Tag block at (0:0,0 [28] )

src/Razor/Microsoft.AspNetCore.Razor.Language/test/TestFiles/ParserTests/TagHelperParseTreeRewriterTest/HandlesCaseSensitiveTagHelpersCorrectly2.stree.txt

@@ -0,0 +1,31 @@
+RazorDocument - [0..28)::28 - [<p CLASS='foo' CATCHAll></p>]
+    MarkupBlock - [0..28)::28
+        MarkupTagHelperElement - [0..28)::28 - p[StartTagAndEndTag] - catchAllTagHelper
+            MarkupTagHelperStartTag - [0..24)::24 - [<p CLASS='foo' CATCHAll>] - Gen<Markup> - SpanEditHandler;Accepts:Any
+                OpenAngle;[<];
+                Text;[p];
+                MarkupTagHelperAttribute - [2..14)::12 - CLASS - SingleQuotes - Unbound - [ CLASS='foo']
+                    MarkupTextLiteral - [2..3)::1 - [ ] - Gen<Markup> - SpanEditHandler;Accepts:Any
+                        Whitespace;[ ];
+                    MarkupTextLiteral - [3..8)::5 - [CLASS] - Gen<Markup> - SpanEditHandler;Accepts:Any
+                        Text;[CLASS];
+                    Equals;[=];
+                    MarkupTextLiteral - [9..10)::1 - ['] - Gen<None> - SpanEditHandler;Accepts:Any
+                        SingleQuote;['];
+                    MarkupTagHelperAttributeValue - [10..13)::3
+                        MarkupLiteralAttributeValue - [10..13)::3 - [foo]
+                            MarkupTextLiteral - [10..13)::3 - [foo] - Gen<Markup> - SpanEditHandler;Accepts:Any
+                                Text;[foo];
+                    MarkupTextLiteral - [13..14)::1 - ['] - Gen<None> - SpanEditHandler;Accepts:Any
+                        SingleQuote;['];
+                MarkupMinimizedTagHelperAttribute - [14..23)::9 - CATCHAll - Minimized - Unbound - [ CATCHAll]
+                    MarkupTextLiteral - [14..15)::1 - [ ] - Gen<Markup> - SpanEditHandler;Accepts:Any
+                        Whitespace;[ ];
+                    MarkupTextLiteral - [15..23)::8 - [CATCHAll] - Gen<Markup> - SpanEditHandler;Accepts:Any
+                        Text;[CATCHAll];
+                CloseAngle;[>];
+            MarkupTagHelperEndTag - [24..28)::4 - [</p>]
+                OpenAngle;[<];
+                ForwardSlash;[/];
+                Text;[p];
+                CloseAngle;[>];