Add DecompilerSettings.ThrowExpressions

ICSharpCode.Decompiler/DecompilerSettings.cs

@@ -88,6 +88,7 @@ namespace ICSharpCode.Decompiler
 			}
 			if (languageVersion < CSharp.LanguageVersion.CSharp7) {
 				outVariables = false;
+				throwExpressions = false;
 				tupleTypes = false;
 				tupleConversions = false;
 				discards = false;
@@ -117,7 +118,7 @@ namespace ICSharpCode.Decompiler
 			if (introduceRefModifiersOnStructs || introduceReadonlyAndInModifiers || nonTrailingNamedArguments)
 				return CSharp.LanguageVersion.CSharp7_2;
 			// C# 7.1 missing
-			if (outVariables || tupleTypes || tupleConversions || discards || localFunctions)
+			if (outVariables || throwExpressions || tupleTypes || tupleConversions || discards || localFunctions)
 				return CSharp.LanguageVersion.CSharp7;
 			if (awaitInCatchFinally || useExpressionBodyForCalculatedGetterOnlyProperties || nullPropagation
 				|| stringInterpolation || dictionaryInitializers || extensionMethodsInCollectionInitializers)
@@ -856,6 +857,23 @@ namespace ICSharpCode.Decompiler
 			}
 		}
 
+		bool throwExpressions = true;
+
+		/// <summary>
+		/// Gets/Sets whether throw expressions should be used.
+		/// </summary>
+		[Category("C# 7.0 / VS 2017")]
+		[Description("DecompilerSettings.UseThrowExpressions")]
+		public bool ThrowExpressions {
+			get { return throwExpressions; }
+			set {
+				if (throwExpressions != value) {
+					throwExpressions = value;
+					OnPropertyChanged();
+				}
+			}
+		}
+
 		bool tupleConversions = true;
 
 		/// <summary>

ILSpy/Properties/Resources.Designer.cs

@@ -908,6 +908,15 @@ namespace ICSharpCode.ILSpy.Properties {
             }
         }
         
+        /// <summary>
+        ///   Looks up a localized string similar to Use throw expressions.
+        /// </summary>
+        public static string DecompilerSettings_UseThrowExpressions {
+            get {
+                return ResourceManager.GetString("DecompilerSettings.UseThrowExpressions", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Looks up a localized string similar to Use tuple type syntax.
         /// </summary>

ILSpy/Properties/Resources.resx

@@ -729,4 +729,7 @@
   <data name="CannotAnalyzeMissingRef" xml:space="preserve">
     <value>Entity could not be resolved. Cannot analyze entities from missing assembly references. Add the missing reference and try again.</value>
   </data>
+  <data name="DecompilerSettings.UseThrowExpressions" xml:space="preserve">
+    <value>Use throw expressions</value>
+  </data>
 </root>