Add cuda nvcc linter (#874)

* add cuda nvcc linter

test/command_callback/test_cuda_nvcc_command_callbacks.vader

@@ -0,0 +1,34 @@
+Before:
+  Save g:ale_cuda_nvcc_executable
+  Save g:ale_cuda_nvcc_options
+
+  unlet! g:ale_cuda_nvcc_executable
+  unlet! b:ale_cuda_nvcc_executable
+  unlet! g:ale_cuda_nvcc_options
+  unlet! b:ale_cuda_nvcc_options
+
+  runtime ale_linters/cuda/nvcc.vim
+
+After:
+  Restore
+  unlet! b:ale_cuda_nvcc_executable
+  unlet! b:ale_cuda_nvcc_options
+  call ale#linter#Reset()
+
+Execute(The executable should be configurable):
+  AssertEqual 'nvcc', ale_linters#cuda#nvcc#GetExecutable(bufnr(''))
+
+  let b:ale_cuda_nvcc_executable = 'foobar'
+
+  AssertEqual 'foobar', ale_linters#cuda#nvcc#GetExecutable(bufnr(''))
+
+Execute(The executable should be used in the command):
+  AssertEqual
+  \ ale#Escape('nvcc') . ' -cuda -std=c++11 %s -o /dev/null',
+  \ ale_linters#cuda#nvcc#GetCommand(bufnr(''))
+
+  let b:ale_cuda_nvcc_executable = 'foobar'
+
+  AssertEqual
+  \ ale#Escape('foobar') . ' -cuda -std=c++11 %s -o /dev/null',
+  \ ale_linters#cuda#nvcc#GetCommand(bufnr(''))

test/handler/test_cuda_nvcc_handler.vader

@@ -0,0 +1,29 @@
+Execute(The cuda nvcc handler should parse errors from multiple files for NVCC 8.0):
+  AssertEqual
+  \ [
+  \   {
+  \     'lnum': 1,
+  \     'type': 'E',
+  \     'text': 'this declaration has no storage class or type specifier',
+  \     'filename': '/tmp/cudatest/test.cu',
+  \   },
+  \   {
+  \     'lnum': 2,
+  \     'type': 'E',
+  \     'text': 'attribute "global" does not apply here',
+  \     'filename': '/tmp/cudatest/common.h',
+  \   },
+  \   {
+  \     'lnum': 2,
+  \     'type': 'E',
+  \     'text': 'expected a ";"',
+  \     'filename': '/tmp/cudatest/common.h',
+  \   },
+  \ ],
+  \ ale_linters#cuda#nvcc#HandleNVCCFormat(0, [
+  \   '/tmp/cudatest/test.cu(1): error: this declaration has no storage class or type specifier',
+  \   '/tmp/cudatest/common.h(2): error: attribute "global" does not apply here',
+  \   '/tmp/cudatest/common.h(2): error: expected a ";"',
+  \   'At end of source: warning: parsing restarts here after previous syntax error',
+  \   '3 errors detected in the compilation of "/tmp/tmpxft_00003a9f_00000000-7_test.cpp1.ii".',
+  \ ])