Fuse incorrect page directives

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

@@ -5550,6 +5550,37 @@ @inherits BaseComponent<string?>
             ]);
     }
 
+    [IntegrationTestFact, WorkItem("https://github.com/dotnet/razor/issues/10863")]
+    public void PageDirective_NoForwardSlash()
+    {
+        // Act
+        var generated = CompileToCSharp("""
+            @page "MyPage"
+            """);
+
+        // Assert
+        AssertDocumentNodeMatchesBaseline(generated.CodeDocument);
+        AssertCSharpDocumentMatchesBaseline(generated.CodeDocument);
+        CompileToAssembly(generated);
+    }
+
+    [IntegrationTestFact, WorkItem("https://github.com/dotnet/razor/issues/10863")]
+    public void PageDirective_MissingRoute()
+    {
+        // Act
+        var generated = CompileToCSharp("""
+            @page
+            """);
+
+        // Assert
+        AssertDocumentNodeMatchesBaseline(generated.CodeDocument);
+
+        // Design time writer doesn't correctly emit pragmas for missing tokens, so don't validate them in design time
+        AssertCSharpDocumentMatchesBaseline(generated.CodeDocument, verifyLinePragmas: !DesignTime);
+        CompileToAssembly(generated);
+    }
+
+
     #endregion
 
     #region EventCallback

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

@@ -0,0 +1,32 @@
+// <auto-generated/>
+#pragma warning disable 1591
+namespace Test
+{
+    #line default
+    using global::System;
+    using global::System.Collections.Generic;
+    using global::System.Linq;
+    using global::System.Threading.Tasks;
+    using global::Microsoft.AspNetCore.Components;
+    #line default
+    #line hidden
+    #nullable restore
+    public partial class TestComponent : global::Microsoft.AspNetCore.Components.ComponentBase
+    #nullable disable
+    {
+        #pragma warning disable 219
+        private void __RazorDirectiveTokenHelpers__() {
+        }
+        #pragma warning restore 219
+        #pragma warning disable 0414
+        private static object __o = null;
+        #pragma warning restore 0414
+        #pragma warning disable 1998
+        protected override void BuildRenderTree(global::Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder __builder)
+        {
+
+        }
+        #pragma warning restore 1998
+    }
+}
+#pragma warning restore 1591

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

@@ -0,0 +1 @@
+x:\dir\subdir\Test\TestComponent.cshtml(1,6): Error RZ1016: The 'page' directive expects a string surrounded by double quotes.

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

@@ -0,0 +1,21 @@
+Document - 
+    NamespaceDeclaration -  - Test
+        UsingDirective - (3:1,1 [20] ) - global::System
+        UsingDirective - (26:2,1 [40] ) - global::System.Collections.Generic
+        UsingDirective - (69:3,1 [25] ) - global::System.Linq
+        UsingDirective - (97:4,1 [36] ) - global::System.Threading.Tasks
+        UsingDirective - (136:5,1 [45] ) - global::Microsoft.AspNetCore.Components
+        ClassDeclaration -  - public partial - TestComponent - global::Microsoft.AspNetCore.Components.ComponentBase - 
+            DesignTimeDirective - 
+            CSharpCode - 
+                IntermediateToken -  - CSharp - #pragma warning disable 0414
+            CSharpCode - 
+                IntermediateToken -  - CSharp - private static object __o = null;
+            CSharpCode - 
+                IntermediateToken -  - CSharp - #pragma warning restore 0414
+            MethodDeclaration -  - protected override - void - BuildRenderTree
+                MalformedDirective - (0:0,0 [5] x:\dir\subdir\Test\TestComponent.cshtml) - page
+                    CSharpCode - (5:0,5 [0] x:\dir\subdir\Test\TestComponent.cshtml)
+                        LazyIntermediateToken - (5:0,5 [0] x:\dir\subdir\Test\TestComponent.cshtml) - CSharp - 
+                HtmlContent - (5:0,5 [2] x:\dir\subdir\Test\TestComponent.cshtml)
+                    LazyIntermediateToken - (5:0,5 [2] x:\dir\subdir\Test\TestComponent.cshtml) - Html - \n

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

@@ -0,0 +1,5 @@
+Source Location: (5:0,5 [0] x:\dir\subdir\Test\TestComponent.cshtml)
+||
+Generated Location: (920:26,5 [0] )
+||
+

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

@@ -0,0 +1,42 @@
+// <auto-generated/>
+#pragma warning disable 1591
+namespace Test
+{
+    #line default
+    using global::System;
+    using global::System.Collections.Generic;
+    using global::System.Linq;
+    using global::System.Threading.Tasks;
+    using global::Microsoft.AspNetCore.Components;
+    #line default
+    #line hidden
+    #nullable restore
+    public partial class TestComponent : global::Microsoft.AspNetCore.Components.ComponentBase
+    #nullable disable
+    {
+        #pragma warning disable 219
+        private void __RazorDirectiveTokenHelpers__() {
+        ((global::System.Action)(() => {
+// language=Route,Component
+#nullable restore
+#line 1 "x:\dir\subdir\Test\TestComponent.cshtml"
+global::System.Object __typeHelper = "MyPage";
+
+#line default
+#line hidden
+#nullable disable
+        }
+        ))();
+        }
+        #pragma warning restore 219
+        #pragma warning disable 0414
+        private static object __o = null;
+        #pragma warning restore 0414
+        #pragma warning disable 1998
+        protected override void BuildRenderTree(global::Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder __builder)
+        {
+        }
+        #pragma warning restore 1998
+    }
+}
+#pragma warning restore 1591

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

@@ -0,0 +1 @@
+x:\dir\subdir\Test\TestComponent.cshtml(1,1): Error RZ9988: The @page directive must specify a route template. The route template must be enclosed in quotes and begin with the '/' character.

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

@@ -0,0 +1,17 @@
+Document - 
+    NamespaceDeclaration -  - Test
+        UsingDirective - (3:1,1 [20] ) - global::System
+        UsingDirective - (26:2,1 [40] ) - global::System.Collections.Generic
+        UsingDirective - (69:3,1 [25] ) - global::System.Linq
+        UsingDirective - (97:4,1 [36] ) - global::System.Threading.Tasks
+        UsingDirective - (136:5,1 [45] ) - global::Microsoft.AspNetCore.Components
+        ClassDeclaration -  - public partial - TestComponent - global::Microsoft.AspNetCore.Components.ComponentBase - 
+            DesignTimeDirective - 
+                DirectiveToken - (6:0,6 [8] x:\dir\subdir\Test\TestComponent.cshtml) - "MyPage"
+            CSharpCode - 
+                IntermediateToken -  - CSharp - #pragma warning disable 0414
+            CSharpCode - 
+                IntermediateToken -  - CSharp - private static object __o = null;
+            CSharpCode - 
+                IntermediateToken -  - CSharp - #pragma warning restore 0414
+            MethodDeclaration -  - protected override - void - BuildRenderTree

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

@@ -0,0 +1,5 @@
+Source Location: (6:0,6 [8] x:\dir\subdir\Test\TestComponent.cshtml)
+|"MyPage"|
+Generated Location: (749:22,37 [8] )
+|"MyPage"|
+

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

@@ -0,0 +1,24 @@
+// <auto-generated/>
+#pragma warning disable 1591
+namespace Test
+{
+    #line default
+    using global::System;
+    using global::System.Collections.Generic;
+    using global::System.Linq;
+    using global::System.Threading.Tasks;
+    using global::Microsoft.AspNetCore.Components;
+    #line default
+    #line hidden
+    #nullable restore
+    public partial class TestComponent : global::Microsoft.AspNetCore.Components.ComponentBase
+    #nullable disable
+    {
+        #pragma warning disable 1998
+        protected override void BuildRenderTree(global::Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder __builder)
+        {
+        }
+        #pragma warning restore 1998
+    }
+}
+#pragma warning restore 1591

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

@@ -0,0 +1 @@
+x:\dir\subdir\Test\TestComponent.cshtml(1,6): Error RZ1016: The 'page' directive expects a string surrounded by double quotes.

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

@@ -0,0 +1,12 @@
+Document - 
+    NamespaceDeclaration -  - Test
+        UsingDirective - (3:1,1 [22] ) - global::System
+        UsingDirective - (26:2,1 [42] ) - global::System.Collections.Generic
+        UsingDirective - (69:3,1 [27] ) - global::System.Linq
+        UsingDirective - (97:4,1 [38] ) - global::System.Threading.Tasks
+        UsingDirective - (136:5,1 [47] ) - global::Microsoft.AspNetCore.Components
+        ClassDeclaration -  - public partial - TestComponent - global::Microsoft.AspNetCore.Components.ComponentBase - 
+            MethodDeclaration -  - protected override - void - BuildRenderTree
+                MalformedDirective - (0:0,0 [5] x:\dir\subdir\Test\TestComponent.cshtml) - page
+                    CSharpCode - (5:0,5 [0] x:\dir\subdir\Test\TestComponent.cshtml)
+                        LazyIntermediateToken - (5:0,5 [0] x:\dir\subdir\Test\TestComponent.cshtml) - CSharp - 

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

@@ -0,0 +1,34 @@
+// <auto-generated/>
+#pragma warning disable 1591
+namespace Test
+{
+    #line default
+    using global::System;
+    using global::System.Collections.Generic;
+    using global::System.Linq;
+    using global::System.Threading.Tasks;
+    using global::Microsoft.AspNetCore.Components;
+    #line default
+    #line hidden
+    [global::Microsoft.AspNetCore.Components.RouteAttribute(
+    // language=Route,Component
+#nullable restore
+#line (1,7)-(1,15) "x:\dir\subdir\Test\TestComponent.cshtml"
+"MyPage"
+
+#line default
+#line hidden
+#nullable disable
+    )]
+    #nullable restore
+    public partial class TestComponent : global::Microsoft.AspNetCore.Components.ComponentBase
+    #nullable disable
+    {
+        #pragma warning disable 1998
+        protected override void BuildRenderTree(global::Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder __builder)
+        {
+        }
+        #pragma warning restore 1998
+    }
+}
+#pragma warning restore 1591

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

@@ -0,0 +1 @@
+x:\dir\subdir\Test\TestComponent.cshtml(1,1): Error RZ9988: The @page directive must specify a route template. The route template must be enclosed in quotes and begin with the '/' character.

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

@@ -0,0 +1,10 @@
+Document - 
+    NamespaceDeclaration -  - Test
+        UsingDirective - (3:1,1 [22] ) - global::System
+        UsingDirective - (26:2,1 [42] ) - global::System.Collections.Generic
+        UsingDirective - (69:3,1 [27] ) - global::System.Linq
+        UsingDirective - (97:4,1 [38] ) - global::System.Threading.Tasks
+        UsingDirective - (136:5,1 [47] ) - global::Microsoft.AspNetCore.Components
+        RouteAttributeExtensionNode - (6:0,6 [8] x:\dir\subdir\Test\TestComponent.cshtml) - "MyPage"
+        ClassDeclaration -  - public partial - TestComponent - global::Microsoft.AspNetCore.Components.ComponentBase - 
+            MethodDeclaration -  - protected override - void - BuildRenderTree

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

@@ -0,0 +1,5 @@
+Source Location: (6:0,6 [8] x:\dir\subdir\Test\TestComponent.cshtml)
+|"MyPage"|
+Generated Location: (504:16,0 [8] )
+|"MyPage"|
+

src/Compiler/Microsoft.CodeAnalysis.Razor.Compiler/src/Language/Components/ComponentPageDirectivePass.cs

@@ -59,15 +59,16 @@ protected override void ExecuteCore(RazorCodeDocument codeDocument, DocumentInte
             var pageDirective = (DirectiveIntermediateNode)directives[i].Node;
 
             // The parser also adds errors for invalid syntax, we just need to not crash.
-            var routeToken = pageDirective.Tokens.FirstOrDefault();
+            var routeToken = pageDirective.Tokens.First();
 
-            if (routeToken is { Content: ['"', '/', .., '"'] content })
+            if (routeToken is not { Content: ['"', '/', .., '"'] })
             {
-                @namespace.Children.Insert(index++, new RouteAttributeExtensionNode(content) { Source = routeToken.Source });
+                pageDirective.Diagnostics.Add(ComponentDiagnosticFactory.CreatePageDirective_MustSpecifyRoute(pageDirective.Source));
             }
-            else
+
+            if (!codeDocument.GetCodeGenerationOptions().DesignTime || pageDirective.Diagnostics.Count == 0)
             {
-                pageDirective.Diagnostics.Add(ComponentDiagnosticFactory.CreatePageDirective_MustSpecifyRoute(pageDirective.Source));
+                @namespace.Children.Insert(index++, new RouteAttributeExtensionNode(routeToken.Content) { Source = routeToken.Source });
             }
         }
     }