Allow `FromError(Exception)` on all IResult types.

src/Discord.Net.Commands/Results/ParseResult.cs

@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using System.Diagnostics;
 
 namespace Discord.Commands
@@ -53,6 +54,8 @@ namespace Discord.Commands
 
         public static ParseResult FromError(CommandError error, string reason)
             => new ParseResult(null, null, error, reason);
+        public static ParseResult FromError(Exception ex)
+            => FromError(CommandError.Exception, ex.Message);
         public static ParseResult FromError(IResult result)
             => new ParseResult(null, null, result.Error, result.ErrorReason);
 

src/Discord.Net.Commands/Results/PreconditionGroupResult.cs

@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using System.Diagnostics;
 
 namespace Discord.Commands
@@ -18,6 +19,8 @@ namespace Discord.Commands
             => new PreconditionGroupResult(null, null, null);
         public static PreconditionGroupResult FromError(string reason, ICollection<PreconditionResult> preconditions)
             => new PreconditionGroupResult(CommandError.UnmetPrecondition, reason, preconditions);
+        public static new PreconditionGroupResult FromError(Exception ex)
+            => new PreconditionGroupResult(CommandError.Exception, ex.Message, null);
         public static new PreconditionGroupResult FromError(IResult result) //needed?
             => new PreconditionGroupResult(result.Error, result.ErrorReason, null);
 

src/Discord.Net.Commands/Results/PreconditionResult.cs

@@ -1,4 +1,5 @@
-using System.Diagnostics;
+using System;
+using System.Diagnostics;
 
 namespace Discord.Commands
 {
@@ -20,6 +21,8 @@ namespace Discord.Commands
             => new PreconditionResult(null, null);
         public static PreconditionResult FromError(string reason)
             => new PreconditionResult(CommandError.UnmetPrecondition, reason);
+        public static PreconditionResult FromError(Exception ex)
+            => new PreconditionResult(CommandError.Exception, ex.Message);
         public static PreconditionResult FromError(IResult result)
             => new PreconditionResult(result.Error, result.ErrorReason);
 

src/Discord.Net.Commands/Results/SearchResult.cs

@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using System.Diagnostics;
 
 namespace Discord.Commands
@@ -26,6 +27,8 @@ namespace Discord.Commands
             => new SearchResult(text, commands, null, null);
         public static SearchResult FromError(CommandError error, string reason)
             => new SearchResult(null, null, error, reason);
+        public static SearchResult FromError(Exception ex)
+            => FromError(CommandError.Exception, ex.Message);
         public static SearchResult FromError(IResult result)
             => new SearchResult(null, null, result.Error, result.ErrorReason);
 

src/Discord.Net.Commands/Results/TypeReaderResult.cs

@@ -50,6 +50,8 @@ namespace Discord.Commands
             => new TypeReaderResult(values, null, null);
         public static TypeReaderResult FromError(CommandError error, string reason)
             => new TypeReaderResult(null, error, reason);
+        public static TypeReaderResult FromError(Exception ex)
+            => FromError(CommandError.Exception, ex.Message);
         public static TypeReaderResult FromError(IResult result)
             => new TypeReaderResult(null, result.Error, result.ErrorReason);