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Merge pull request #548 from CesiumGS/reinterop-exceptions
Add exception support to Reinterop
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| using Microsoft.CodeAnalysis; | ||
|
|
||
| namespace Reinterop | ||
| { | ||
| /// <summary> | ||
| /// Inserts the "ReinteropException" class into an assembly as it is compiled. | ||
| /// This is intended to be used from a RegisterPostInitializationOutput | ||
| /// callback on an IIncrementalGenerator. | ||
| /// </summary> | ||
| internal class CSharpReinteropException | ||
| { | ||
| public static void Generate(GeneratorExecutionContext context) | ||
| { | ||
| context.AddSource("ReinteropException", Source); | ||
| } | ||
|
|
||
| public static CppType GetCppWrapperType(CppGenerationContext context) | ||
| { | ||
| List<string> ns = new List<string>(); | ||
| if (context.BaseNamespace.Length > 0) | ||
| ns.Add(context.BaseNamespace); | ||
| ns.Add("Reinterop"); | ||
|
|
||
| // If the first two namespaces are identical, remove the duplication. | ||
| // This is to avoid `Reinterop::Reinterop`. | ||
| if (ns.Count >= 2 && ns[0] == ns[1]) | ||
| ns.RemoveAt(0); | ||
|
|
||
| return new CppType(InteropTypeKind.ClassWrapper, ns, "ReinteropException", null, 0); | ||
| } | ||
|
|
||
| public const string Source = | ||
| """ | ||
| namespace Reinterop | ||
| { | ||
| [Reinterop] | ||
| internal class ReinteropException : System.Exception | ||
| { | ||
| public ReinteropException(string message) : base(message) {} | ||
| internal static void ExposeToCPP() | ||
| { | ||
| ReinteropException e = new ReinteropException("message"); | ||
| string s = e.Message; | ||
| } | ||
| } | ||
| } | ||
| """; | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,82 @@ | ||
| namespace Reinterop | ||
| { | ||
| internal class CppReinteropException | ||
| { | ||
| public static CppType GetCppType(CppGenerationContext context) | ||
| { | ||
| List<string> ns = new List<string>(); | ||
| if (context.BaseNamespace.Length > 0) | ||
| ns.Add(context.BaseNamespace); | ||
| ns.Add("Reinterop"); | ||
|
|
||
| // If the first two namespaces are identical, remove the duplication. | ||
| // This is to avoid `Reinterop::Reinterop`. | ||
| if (ns.Count >= 2 && ns[0] == ns[1]) | ||
| ns.RemoveAt(0); | ||
|
|
||
| return new CppType(InteropTypeKind.ClassWrapper, ns, "ReinteropNativeException", null, 0); | ||
| } | ||
|
|
||
| public static void Generate(CppGenerationContext context, IDictionary<string, CppSourceFile> sourceFiles) | ||
| { | ||
| CppType type = GetCppType(context); | ||
|
|
||
| string headerPath = Path.Combine(new[] { "include" }.Concat(type.Namespaces).Concat(new[] { type.Name + ".h" }).ToArray()); | ||
|
|
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| CppSourceFile? headerFile = null; | ||
| if (!sourceFiles.TryGetValue(headerPath, out headerFile)) | ||
| { | ||
| headerFile = new CppSourceFile(); | ||
| headerFile.IsHeaderFile = true; | ||
| headerFile.Filename = headerPath; | ||
| sourceFiles.Add(headerPath, headerFile); | ||
| } | ||
|
|
||
| var headerNamespace = headerFile.GetNamespace(type.GetFullyQualifiedNamespace(false)); | ||
| headerNamespace.Members.Add( | ||
| $$""" | ||
| class ReinteropNativeException : public std::runtime_error { | ||
| public: | ||
| ReinteropNativeException(const DotNet::System::Exception& exception); | ||
| const ::DotNet::System::Exception& GetDotNetException() const; | ||
| private: | ||
| ::DotNet::System::Exception _exception; | ||
| }; | ||
| """); | ||
|
|
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| headerFile.Includes.Add("<stdexcept>"); | ||
|
|
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| CppType exceptionType = new CppType(InteropTypeKind.ClassWrapper, new[] { "DotNet", "System" }, "Exception", null, 0); | ||
| exceptionType.AddSourceIncludesToSet(headerFile.Includes); | ||
|
|
||
| string sourcePath = Path.Combine("src", type.Name + ".cpp"); | ||
|
|
||
| CppSourceFile? sourceFile = null; | ||
| if (!sourceFiles.TryGetValue(sourcePath, out sourceFile)) | ||
| { | ||
| sourceFile = new CppSourceFile(); | ||
| sourceFile.IsHeaderFile = false; | ||
| sourceFile.Filename = sourcePath; | ||
| sourceFiles.Add(sourcePath, sourceFile); | ||
| } | ||
|
|
||
| type.AddSourceIncludesToSet(sourceFile.Includes); | ||
|
|
||
| CppType stringType = new CppType(InteropTypeKind.ClassWrapper, new[] { "DotNet", "System" }, "String", null, 0); | ||
| stringType.AddSourceIncludesToSet(sourceFile.Includes); | ||
|
|
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| var sourceNamespace = sourceFile.GetNamespace(type.GetFullyQualifiedNamespace(false)); | ||
| sourceNamespace.Members.Add( | ||
| $$""" | ||
| ReinteropNativeException::ReinteropNativeException(const DotNet::System::Exception& exception) | ||
| : std::runtime_error(exception.Message().ToStlString()), | ||
| _exception(exception) {} | ||
| const ::DotNet::System::Exception& ReinteropNativeException::GetDotNetException() const { | ||
| return this->_exception; | ||
| } | ||
| """); | ||
| } | ||
| } | ||
| } |
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