Remove LINQ from GuidGenerator

microsoft · Feb 2, 2024 · cbac465 · cbac465
1 parent 19f52d3
commit cbac465
Showing 1 changed file with 27 additions and 4 deletions.
diff --git a/src/WinRT.Runtime/GuidGenerator.cs b/src/WinRT.Runtime/GuidGenerator.cs
@@ -3,7 +3,6 @@
 
 using System;
 using System.Diagnostics.CodeAnalysis;
-using System.Linq;
 using System.Reflection;
 using System.Security.Cryptography;
 using System.Text;
@@ -101,7 +100,19 @@ public static string GetSignature(
  }
  else
  {
- var args = type.GetFields(BindingFlags.Instance | BindingFlags.Public).Select(fi => GetSignature(fi.FieldType));
+ static string[] SelectSignaturesForFields(FieldInfo[] fields)
+ {
+ string[] signatures = new string[fields.Length];
+
+ for (int i = 0; i < fields.Length; i++)
+ {
+ signatures[i] = GetSignature(fields[i].FieldType);
+ }
+
+ return signatures;
+ }
+
+ var args = SelectSignaturesForFields(type.GetFields(BindingFlags.Instance | BindingFlags.Public));
  return "struct(" + type.FullName + ";" + String.Join(";", args) + ")";
  }
  }
@@ -117,7 +128,19 @@ public static string GetSignature(
 
  if (type.IsGenericType)
  {
- var args = type.GetGenericArguments().Select(t => GetSignature(t));
+ static string[] SelectSignaturesForTypes(Type[] types)
+ {
+ string[] signatures = new string[types.Length];
+
+ for (int i = 0; i < types.Length; i++)
+ {
+ signatures[i] = GetSignature(types[i]);
+ }
+
+ return signatures;
+ }
+
+ var args = SelectSignaturesForTypes(type.GetGenericArguments());
  return "pinterface({" + GetGUID(type) + "};" + String.Join(";", args) + ")";
  }
 
@@ -181,7 +204,7 @@ public static Guid CreateIID(Type type)
  internal static Guid CreateIIDForGenericType(string signature)
  {
 #if !NET
- var data = wrt_pinterface_namespace.ToByteArray().Concat(UTF8Encoding.UTF8.GetBytes(signature)).ToArray();
+ var data = System.Linq.Enumerable.ToArray(System.Linq.Enumerable.Concat(wrt_pinterface_namespace.ToByteArray(), Encoding.UTF8.GetBytes(signature)));
 
  using (SHA1 sha = new SHA1CryptoServiceProvider())
  {