fix parser diagnostic reporting

Author: quinchs

src/Discord.Net.ComponentDesigner.Generator/Diagnostics.cs

@@ -8,9 +8,9 @@ public static partial class Diagnostics
     public static Diagnostic CreateParsingDiagnostic(CXDiagnostic diagnostic, Location location)
         => Diagnostic.Create(
             new DiagnosticDescriptor(
-                $"DCP{diagnostic.Code.ToString().PadLeft(3, '0')}",
+                $"DCP{((int)diagnostic.Code).ToString().PadLeft(3, '0')}",
+                diagnostic.Message,
                 diagnostic.Message,
-                string.Empty,
                 "CX Parser",
                 diagnostic.Severity,
                 true

src/Discord.Net.ComponentDesigner.Generator/Graph/CXGraphManager.cs

@@ -150,7 +150,7 @@ private RenderedInterceptor CreateRender(CancellationToken token = default)
                 InterceptLocation,
                 InvocationSyntax.GetLocation(),
                 CXDesigner,
-                string.Empty,
+                "// omitted, contains parser errors.",
                 [..parserDiagnostics],
                 UsesDesigner
             );
@@ -162,7 +162,7 @@ private RenderedInterceptor CreateRender(CancellationToken token = default)
                 InterceptLocation,
                 InvocationSyntax.GetLocation(),
                 CXDesigner,
-                string.Empty,
+                "// omitted, contains graph structural errors.",
                 [..parserDiagnostics, ..Graph.Diagnostics],
                 UsesDesigner
             );
@@ -178,7 +178,7 @@ private RenderedInterceptor CreateRender(CancellationToken token = default)
                 this.InterceptLocation,
                 InvocationSyntax.GetLocation(),
                 CXDesigner,
-                string.Empty,
+                "// omitted, contains validation errors.",
                 [..parserDiagnostics, ..Graph.Diagnostics, ..context.GlobalDiagnostics],
                 UsesDesigner
             );