migrate to the new Harmony patch pattern used in my mods

That improves validation and error-handling.

2 files changed, 42 insertions, 0 deletions

diff --git a/src/SMAPI.Internal/ExceptionExtensions.cs b/src/SMAPI.Internal/ExceptionExtensions.cs
new file mode 100644
index 00000000..d7a2252b
--- /dev/null
+++ b/src/SMAPI.Internal/ExceptionExtensions.cs
@@ -0,0 +1,41 @@
+using System;
+using System.Reflection;
+
+namespace StardewModdingAPI.Internal
+{
+    /// <summary>Provides extension methods for handling exceptions.</summary>
+    internal static class ExceptionExtensions
+    {
+        /*********
+        ** Public methods
+        *********/
+        /// <summary>Get a string representation of an exception suitable for writing to the error log.</summary>
+        /// <param name="exception">The error to summarize.</param>
+        public static string GetLogSummary(this Exception exception)
+        {
+            switch (exception)
+            {
+                case TypeLoadException ex:
+                    return $"Failed loading type '{ex.TypeName}': {exception}";
+
+                case ReflectionTypeLoadException ex:
+                    string summary = exception.ToString();
+                    foreach (Exception childEx in ex.LoaderExceptions)
+                        summary += $"\n\n{childEx.GetLogSummary()}";
+                    return summary;
+
+                default:
+                    return exception.ToString();
+            }
+        }
+
+        /// <summary>Get the lowest exception in an exception stack.</summary>
+        /// <param name="exception">The exception from which to search.</param>
+        public static Exception GetInnermostException(this Exception exception)
+        {
+            while (exception.InnerException != null)
+                exception = exception.InnerException;
+            return exception;
+        }
+    }
+}
diff --git a/src/SMAPI.Internal/SMAPI.Internal.projitems b/src/SMAPI.Internal/SMAPI.Internal.projitems
index 0d583a6d..0ee94a5b 100644
--- a/src/SMAPI.Internal/SMAPI.Internal.projitems
+++ b/src/SMAPI.Internal/SMAPI.Internal.projitems
@@ -14,5 +14,6 @@
     <Compile Include="$(MSBuildThisFileDirectory)ConsoleWriting\ConsoleLogLevel.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)ConsoleWriting\IConsoleWriter.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)ConsoleWriting\MonitorColorScheme.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)ExceptionExtensions.cs" />
   </ItemGroup>
 </Project>
\ No newline at end of file