throw on unsupported arch/platform

src/CLI/Generator.cs

@@ -40,6 +40,8 @@ namespace CppSharp
                 case TargetArchitecture.WASM64:
                     tripleBuilder.Append("wasm64-");
                     break;
+                default:
+                    throw new ArgumentOutOfRangeException(nameof(options.Architecture), "Unsupported target architecture.");
             }
 
             switch (options.Platform)
@@ -71,6 +73,8 @@ namespace CppSharp
                     abi = CppAbi.Itanium;
                     break;
                 }
+                default:
+                    throw new ArgumentOutOfRangeException(nameof(options.Platform), "Unsupported target platform.");
             }
 
             triple = tripleBuilder.ToString();

src/CppParser/AST.h

@@ -23,7 +23,10 @@ enum class ArchType
 {
     UnknownArch,
     x86,
-    x86_64
+    x86_64,
+    aarch64,
+    aarch64_be,
+    aarch64_32
 };
 
 class CS_API NativeLibrary

src/CppParser/Parser.cpp

@@ -4667,8 +4667,16 @@ static ArchType ConvertArchType(unsigned int archType)
         return ArchType::x86;
     case llvm::Triple::ArchType::x86_64:
         return ArchType::x86_64;
-    }
+    case llvm::Triple::ArchType::aarch64:
+        return ArchType::aarch64;
+    case llvm::Triple::ArchType::aarch64_be:
+        return ArchType::aarch64_be;
+    case llvm::Triple::ArchType::aarch64_32:
+        return ArchType::aarch64_32;
+    default:
+        assertm(0, "Unsupported architecture type!\n");
         return ArchType::UnknownArch;
+    }
 }
 
 template<class ELFT>

src/Generator/Driver.cs

@@ -28,16 +28,14 @@ namespace CppSharp
 
         void ValidateOptions()
         {
-            if (!Options.Compilation.Platform.HasValue)
-                Options.Compilation.Platform = Platform.Host;
+            Options.Compilation.Platform ??= Platform.Host;
 
             foreach (var module in Options.Modules)
             {
                 if (string.IsNullOrWhiteSpace(module.LibraryName))
                     throw new InvalidOptionException("One of your modules has no library name.");
 
-                if (module.OutputNamespace == null)
-                    module.OutputNamespace = module.LibraryName;
+                module.OutputNamespace ??= module.LibraryName;
 
                 for (int i = 0; i < module.IncludeDirs.Count; i++)
                 {