initial code

src/ProxyInterfaceSourceGenerator/Extensions/SymbolExtensions.cs

@@ -0,0 +1,27 @@
+using System.Collections.Generic;
+using Microsoft.CodeAnalysis;
+
+namespace ProxyInterfaceSourceGenerator.Extensions
+{
+    internal static class SymbolExtensions
+    {
+        public static string ToCode(this IPropertySymbol property)
+        {
+            string get = property.GetMethod != null ? "get; " : string.Empty;
+            string set = property.SetMethod != null ? "set; " : string.Empty;
+
+            return $"{property.Type} {property.Name} {{ {get}{set}}}";
+        }
+
+        public static string ToCode(this IMethodSymbol method)
+        {
+            var parameters = new List<string>();
+            foreach (var ps in method.Parameters)
+            {
+                parameters.Add($"{ps.Type} {ps.Name}");
+            }
+
+            return $"{method.ReturnType} {method.Name}({string.Join(", ", parameters)});";
+        }
+    }
+}