From cc9eaca87af8e4b628f17a44d12fc4275f63afba Mon Sep 17 00:00:00 2001
From: Chris Cameron <chris.cameron@wedoresi.com>
Date: Thu, 19 Jul 2018 11:38:30 -0400
Subject: [PATCH] feat: Extension method for getting a signature representation
 of a MethodInfo

---
 .../Extensions/MethodInfoExtensions.cs        | 121 ++++++++++++++++++
 .../ICD.Common.Utils_SimplSharp.csproj        |   1 +
 2 files changed, 122 insertions(+)
 create mode 100644 ICD.Common.Utils/Extensions/MethodInfoExtensions.cs

diff --git a/ICD.Common.Utils/Extensions/MethodInfoExtensions.cs b/ICD.Common.Utils/Extensions/MethodInfoExtensions.cs
new file mode 100644
index 0000000..611b38a
--- /dev/null
+++ b/ICD.Common.Utils/Extensions/MethodInfoExtensions.cs
@@ -0,0 +1,121 @@
+using System;
+using System.Text;
+#if SIMPLSHARP
+using Crestron.SimplSharp.Reflection;
+#else
+using System.Reflection;
+#endif
+
+namespace ICD.Common.Utils.Extensions
+{
+	public static class MethodInfoExtensions
+	{
+		/// <summary>
+		/// Return the method signature as a string.
+		/// </summary>
+		/// <param name="method">The Method</param>
+		/// <returns>Method signature</returns>
+		public static string GetSignature(this MethodInfo method)
+		{
+			return method.GetSignature(false);
+		}
+
+		/// <summary>
+		/// Return the method signature as a string.
+		/// </summary>
+		/// <param name="method">The Method</param>
+		/// <param name="callable">Return as a callable string(public void a(string b) would return a(b))</param>
+		/// <returns>Method signature</returns>
+		public static string GetSignature(this MethodInfo method, bool callable)
+		{
+			bool firstParam = true;
+			StringBuilder sigBuilder = new StringBuilder();
+
+			if (callable == false)
+			{
+				if (method.IsPublic)
+					sigBuilder.Append("public ");
+				else if (method.IsPrivate)
+					sigBuilder.Append("private ");
+				else if (method.IsAssembly)
+					sigBuilder.Append("internal ");
+				if (method.IsFamily)
+					sigBuilder.Append("protected ");
+				if (method.IsStatic)
+					sigBuilder.Append("static ");
+
+				Type returnType = method.ReturnType;
+
+				sigBuilder.Append(returnType.GetSyntaxName());
+				sigBuilder.Append(' ');
+			}
+
+			sigBuilder.Append(method.Name);
+
+			// Add method generics
+			if (method.IsGenericMethod)
+			{
+				sigBuilder.Append("<");
+				foreach (Type g in method.GetGenericArguments())
+				{
+					if (firstParam)
+						firstParam = false;
+					else
+						sigBuilder.Append(", ");
+
+					sigBuilder.Append(g.GetSyntaxName());
+				}
+				sigBuilder.Append(">");
+			}
+
+			sigBuilder.Append("(");
+
+			firstParam = true;
+			bool secondParam = false;
+
+			foreach (ParameterInfo param in method.GetParameters())
+			{
+				if (firstParam)
+				{
+					firstParam = false;
+
+#if SIMPLSHARP
+					// TODO - RestrictionViolationException: System.Runtime.CompilerServices.ExtensionAttribute - Not allowed due to restrictions
+#else
+					if (method.IsDefined(typeof(System.Runtime.CompilerServices.ExtensionAttribute), false))
+					{
+						if (callable)
+						{
+							secondParam = true;
+							continue;
+						}
+						sigBuilder.Append("this ");
+					}
+#endif
+				}
+				else if (secondParam)
+					secondParam = false;
+				else
+					sigBuilder.Append(", ");
+
+				if (param.ParameterType.IsByRef)
+					sigBuilder.Append("ref ");
+				else if (param.GetIsOut())
+					sigBuilder.Append("out ");
+				if (!callable)
+				{
+					Type parameterType = param.ParameterType;
+
+					sigBuilder.Append(parameterType.GetSyntaxName());
+					sigBuilder.Append(' ');
+				}
+
+				sigBuilder.Append(param.Name);
+			}
+
+			sigBuilder.Append(")");
+
+			return sigBuilder.ToString();
+		}
+	}
+}
diff --git a/ICD.Common.Utils/ICD.Common.Utils_SimplSharp.csproj b/ICD.Common.Utils/ICD.Common.Utils_SimplSharp.csproj
index 4984ff7..1e6c200 100644
--- a/ICD.Common.Utils/ICD.Common.Utils_SimplSharp.csproj
+++ b/ICD.Common.Utils/ICD.Common.Utils_SimplSharp.csproj
@@ -100,6 +100,7 @@
     <Compile Include="Extensions\DayOfWeekExtensions.cs" />
     <Compile Include="Extensions\ListExtensions.cs" />
     <Compile Include="Comparers\PredicateEqualityComparer.cs" />
+    <Compile Include="Extensions\MethodInfoExtensions.cs" />
     <Compile Include="Extensions\ParameterInfoExtensions.cs" />
     <Compile Include="Extensions\UriExtensions.cs" />
     <Compile Include="Extensions\UshortExtensions.cs" />