Add allowImplicitConversion parameter to TranslatedExpression.ConvertTo

ICSharpCode.Decompiler/CSharp/TranslatedExpression.cs

@@ -168,7 +168,7 @@ namespace ICSharpCode.Decompiler.CSharp
 		/// From the caller's perspective, IntPtr/UIntPtr behave like normal C# integers except that they have native int size.
 		/// All the special cases necessary to make IntPtr/UIntPtr behave sanely are handled internally in ConvertTo().
 		/// </remarks>
-		public TranslatedExpression ConvertTo(IType targetType, ExpressionBuilder expressionBuilder, bool checkForOverflow = false)
+		public TranslatedExpression ConvertTo(IType targetType, ExpressionBuilder expressionBuilder, bool checkForOverflow = false, bool allowImplicitConversion = false)
 		{
 			var type = this.Type;
 			if (type.Equals(targetType))
@@ -294,6 +294,10 @@ namespace ICSharpCode.Decompiler.CSharp
 					.WithILInstruction(this.ILInstructions)
 					.WithRR(new ConstantResolveResult(targetType, null));
 			}
+			var conversions = Resolver.CSharpConversions.Get(compilation);
+			if (allowImplicitConversion && conversions.ImplicitConversion(type, targetType).IsValid) {
+				return this;
+			}
 			var castExpr = new CastExpression(expressionBuilder.ConvertType(targetType), Expression);
 			castExpr.AddAnnotation(checkForOverflow ? AddCheckedBlocks.CheckedAnnotation : AddCheckedBlocks.UncheckedAnnotation);
 			return castExpr.WithoutILInstruction().WithRR(rr);