Add support for clangd with CUDA (#3598)

* add support for clangd with CUDA
* add clangd with CUDA in supported-tools.md
* add doc for clangd with CUDA

ale_linters/cuda/clangd.vim

@@ -0,0 +1,23 @@
+" Author: Tommy Chiang <ty1208chiang@gmail.com>
+" Description: Clangd language server for CUDA (modified from Andrey
+" Melentyev's implementation for C++)
+
+call ale#Set('cuda_clangd_executable', 'clangd')
+call ale#Set('cuda_clangd_options', '')
+call ale#Set('c_build_dir', '')
+
+function! ale_linters#cuda#clangd#GetCommand(buffer) abort
+    let l:build_dir = ale#c#GetBuildDirectory(a:buffer)
+
+    return '%e'
+    \    . ale#Pad(ale#Var(a:buffer, 'cuda_clangd_options'))
+    \    . (!empty(l:build_dir) ? ' -compile-commands-dir=' . ale#Escape(l:build_dir) : '')
+endfunction
+
+call ale#linter#Define('cuda', {
+\   'name': 'clangd',
+\   'lsp': 'stdio',
+\   'executable': {b -> ale#Var(b, 'cuda_clangd_executable')},
+\   'command': function('ale_linters#cuda#clangd#GetCommand'),
+\   'project_root': function('ale#c#FindProjectRoot'),
+\})

doc/ale-cuda.txt

@@ -21,6 +21,24 @@ g:ale_cuda_nvcc_options                               *g:ale_cuda_nvcc_options*
 
   This variable can be changed to modify flags given to nvcc.
 
+===============================================================================
+clangd                                                        *ale-cuda-clangd*
+
+g:ale_cuda_clangd_executable                     *g:ale_cuda_clangd_executable*
+                                                 *b:ale_cuda_clangd_executable*
+  Type: |String|
+  Default: `'clangd'`
+
+  This variable can be changed to use a different executable for clangd.
+
+
+g:ale_cuda_clangd_options                           *g:ale_cuda_clangd_options*
+                                                    *b:ale_cuda_clangd_options*
+  Type: |String|
+  Default: `''`
+
+  This variable can be changed to modify flags given to clangd.
+
 ===============================================================================
 clang-format                                              *ale-cuda-clangformat*
 

doc/ale-supported-languages-and-tools.txt

@@ -109,6 +109,7 @@ Notes:
 * Cucumber
   * `cucumber`
 * CUDA
+  * `clangd`
   * `nvcc`!!
 * Cypher
   * `cypher-lint`

doc/ale.txt

@@ -2688,6 +2688,7 @@ documented in additional help files.
     stylelint.............................|ale-css-stylelint|
   cuda....................................|ale-cuda-options|
     nvcc..................................|ale-cuda-nvcc|
+    clangd................................|ale-cuda-clangd|
     clang-format..........................|ale-cuda-clangformat|
   d.......................................|ale-d-options|
     dfmt..................................|ale-d-dfmt|

supported-tools.md

@@ -118,6 +118,7 @@ formatting.
 * Cucumber
   * [cucumber](https://cucumber.io/)
 * CUDA
+  * [clangd](https://clang.llvm.org/extra/clangd.html)
   * [nvcc](http://docs.nvidia.com/cuda/cuda-compiler-driver-nvcc/index.html)
 * Cypher
   * [cypher-lint](https://github.com/cleishm/libcypher-parser)