P/Invoke Source Generator

A source generator which generates C# P/Invoke methods with dumpbin.

Prerequsities

• dumpbin (included in Visual Studio, and need to be set in PATH)

Quick start

Assuming you have the following C++ code in test.cpp:

__declspec(dllexport) void test1() { }
__declspec(dllexport) int test2() { return 1; }
__declspec(dllexport) void* test3() { return nullptr; }
__declspec(dllexport) int* test4() { return nullptr; }
__declspec(dllexport) void test5(void* i) { }
__declspec(dllexport) void test6(int* u) { }
__declspec(dllexport) void test7(long long* x) { }

Compile the code with MSVC:

cl.exe test.cpp /LD /std:c++latest /O2 /EHsc /FD /Fetest.dll

To generate P/Invoke methods, you need to reference the project PInvoke.SourceGenerator:

<ProjectReference Include="PInvoke.SourceGenerator\PInvoke.SourceGenerator.csproj" OutputItemType="Analyzer" />

Then you can write below code in C# for code generation:

[DllFileImport("test.dll")]
partial class TestLibrary { }

To use the generated code, for example, calling to test1:

TestLibrary.Test1();