Add NoWarns flag

src/Microsoft.CodeAnalysis.ResxSourceGenerator/Microsoft.CodeAnalysis.ResxSourceGenerator/AbstractResxGenerator.cs

@@ -115,6 +115,12 @@ public void Initialize(IncrementalGeneratorInitializationContext context)
                         publicResource = false;
                     }
 
+                    var noWarns = Array.Empty<string>();
+                    if (options.TryGetValue("build_metadata.AdditionalFiles.NoWarns", out var noWarnsText))
+                    {
+                        noWarns = noWarnsText.Split([',', ';'], StringSplitOptions.RemoveEmptyEntries) ?? [];
+                    }
+
                     return new[]
                     {
                         new ResourceInformation(
@@ -127,7 +133,8 @@ public void Initialize(IncrementalGeneratorInitializationContext context)
                             AsConstants: asConstants,
                             IncludeDefaultValues: includeDefaultValues,
                             EmitFormatMethods: emitFormatMethods,
-                            Public: publicResource)
+                            Public: publicResource,
+                            NoWarns: noWarns)
                     };
                 });
             var renameMapping = resourceFilesToGenerateSource
@@ -252,6 +259,7 @@ private sealed record CompilationInformation(
         /// <param name="IncludeDefaultValues">If set to <see langword="true"/>, calls to <c>GetResourceString</c> receive a default resource string value.</param>
         /// <param name="EmitFormatMethods">If set to <see langword="true"/>, the generated code will include <c>.FormatXYZ(...)</c> methods.</param>
         /// <param name="Public">If set to <see langword="true"/>, the generated class will be declared <see langword="public"/>; otherwise, it will be declared <see langword="internal"/>.</param>
+        /// <param name="NoWarns">List of of disabled warnings, adding a <c>#pragma warning disable</c>.</param>
         private sealed record ResourceInformation(
             CompilationInformation CompilationInformation,
             AdditionalText ResourceFile,
@@ -262,7 +270,8 @@ private sealed record ResourceInformation(
             bool AsConstants,
             bool IncludeDefaultValues,
             bool EmitFormatMethods,
-            bool Public);
+            bool Public,
+            string[] NoWarns);
 
         private sealed class ImmutableDictionaryEqualityComparer<TKey, TValue> : IEqualityComparer<ImmutableDictionary<TKey, TValue>?>
             where TKey : notnull
@@ -609,14 +618,39 @@ public bool Execute(CancellationToken cancellationToken)
                     }
                 }
 
+                // List of NoWarns
+                string? noWarnsDisabled = null;
+                string? noWarnsRestored = null;
+                if (ResourceInformation.NoWarns.Length > 0)
+                {
+                    var noWarnsList = string.Join(", ", ResourceInformation.NoWarns);
+                    var crLf = Environment.NewLine;
+
+                    switch (language)
+                    {
+                        case Lang.CSharp:
+                            noWarnsDisabled = $"{crLf}{crLf}#pragma warning disable {noWarnsList}";
+                            noWarnsRestored = $"{crLf}{crLf}#pragma warning restore {noWarnsList}";
+                            break;
+
+                        case Lang.VisualBasic:
+                            noWarnsDisabled = $"{crLf}{crLf}#Disable Warning {noWarnsList}";
+                            noWarnsRestored = $"{crLf}{crLf}#Enable Warning {noWarnsList}";
+                            break;
+
+                        default:
+                            throw new InvalidOperationException();
+                    }
+                }
+
                 // The ResourceManager property being initialized lazily is an important optimization that lets .NETNative
                 // completely remove the ResourceManager class if the disk space saving optimization to strip resources
                 // (/DisableExceptionMessages) is turned on in the compiler.
                 string result;
                 switch (language)
                 {
                     case Lang.CSharp:
-                        result = $@"// <auto-generated/>
+                        result = $@"// <auto-generated/>{noWarnsDisabled}
 
 {(CompilationInformation.SupportsNullable ? "#nullable enable" : "")}
 using System.Reflection;
@@ -630,12 +664,12 @@ public bool Execute(CancellationToken cancellationToken)
 {getStringMethod}
 {strings}
 {classIndent}}}
-{namespaceEnd}
+{namespaceEnd}{noWarnsRestored}
 ";
                         break;
 
                     case Lang.VisualBasic:
-                        result = $@"' <auto-generated/>
+                        result = $@"' <auto-generated/>{noWarnsDisabled}
 
 Imports System.Reflection
 
@@ -657,7 +691,7 @@ Imports System.Reflection
 {getStringMethod}
 {strings}
 {classIndent}End Class
-{namespaceEnd}
+{namespaceEnd}{noWarnsRestored}
 ";
                         break;