Cpp extensions (#1451)

* Add more cpp extensions

* Allow FilenameMatcher to be case insensitive
---------

Co-authored-by: Darin Morrison <darinmorrison@gmail.com>
Co-authored-by: silvanshade <silvanshade@users.noreply.github.com>
Co-authored-by: MischaPanch

test/resources/repos/cpp/test_repo/C/a.c

@@ -0,0 +1,7 @@
+#include "b.h"
+
+int main()
+{
+    int x = add(3, 4);
+    return x;
+}

test/resources/repos/cpp/test_repo/C/b.h

@@ -0,0 +1,3 @@
+#pragma once
+
+int add(int a, int b);

test/resources/repos/cpp/test_repo/CUDA/a.cu

@@ -0,0 +1,16 @@
+#include <cstdio>
+#include <cstdlib>
+
+__global__ auto
+cuda_hello() -> void
+{
+    printf("Hello World from GPU!\n");
+}
+
+auto
+main() -> int
+{
+    cuda_hello<<<1, 1>>>();
+    cudaDeviceSynchronize();
+    return EXIT_SUCCESS;
+}

test/resources/repos/cpp/test_repo/CXX20/a.cpp

@@ -0,0 +1,9 @@
+#include <cstdlib>
+
+import b;
+
+auto
+main() noexcept -> int
+{
+    return EXIT_SUCCESS;
+}

test/resources/repos/cpp/test_repo/CXX20/b.cpp

@@ -0,0 +1,17 @@
+module;
+
+#include <cstdint>
+
+module b;
+
+auto
+add(auto x, auto y) -> decltype(x + y)
+{
+    return x + y;
+}
+
+auto
+add_f32(float x, float y) -> float
+{
+    return add(x, y);
+}

test/resources/repos/cpp/test_repo/CXX20/b.cppm

@@ -0,0 +1,16 @@
+module;
+
+#include <cstdint>
+
+export module b;
+
+export auto
+add(auto x, auto y) -> decltype(x + y);
+
+export auto
+add_f32(float x, float y) -> float;
+
+auto
+add_u32(std::int32_t x, std::int32_t y) -> std::int32_t {
+    return x + y;
+}

test/resources/repos/cpp/test_repo/HIP/a.hip

@@ -0,0 +1,10 @@
+// -*- mode: C -*-
+
+#include <hip/hip_runtime.h>
+
+__global__
+void add_vectors(const float* A, const float* B, float* C)
+{
+    auto const idx = blockIdx.x * blockDim.x + threadIdx.x;
+    C[idx] = A[idx] + B[idx];
+}

test/resources/repos/cpp/test_repo/Objective-C/a.m

@@ -0,0 +1,7 @@
+@interface Hello
+- (void)hello;
+@end
+
+int main(int argc, const char * argv[]) {
+    return 0;
+}

test/resources/repos/cpp/test_repo/OpenCL/a.cl

@@ -0,0 +1,8 @@
+// -*- mode: C -*-
+
+__kernel
+void add_vectors(__global const float *A, __global const float *B, __global float *C) 
+{
+    int idx = get_global_id(0);
+    C[idx] = A[idx] + B[idx];
+}

test/resources/repos/cpp/test_repo/compile_commands.json

@@ -13,5 +13,40 @@
     "directory": ".",
     "command": "g++ -std=c++17 -I . -c diagnostics_sample.cpp",
     "file": "diagnostics_sample.cpp"
+  },
+  {
+    "directory": "C",
+    "command": "clang -std=gnu23 -c a.c",
+    "file": "a.c"
+  },
+  {
+    "directory": "CUDA",
+    "command": "nvcc -std=c++20 -c a.cu",
+    "file": "a.cu"
+  },
+  {
+    "directory": "CXX20",
+    "command": "clang++ -std=gnu++20 -fmodule-file=b=b.pcm -c a.cpp",
+    "file": "a.cpp"
+  },
+  {
+    "directory": "CXX20",
+    "command": "clang++ -std=gnu++20 -fmodule-file=b=b.pcm -c b.cpp",
+    "file": "b.cpp"
+  },
+  {
+    "directory": "CXX20",
+    "command": "clang++ -std=gnu++20 -c b.cppm",
+    "file": "b.cppm"
+  },
+  {
+    "directory": "OpenCL",
+    "command": "clang -std=cl3.0 -c a.cl",
+    "file": "a.cl"
+  },
+    {
+    "directory": "HIP",
+    "command": "hipcc -c a.hip",
+    "file": "a.hip"
   }
 ]