Add support for checking Cython files

ale_linters/pyrex/cython.vim

@@ -0,0 +1,45 @@
+" Author: w0rp <devw0rp@gmail.com>
+" Description: cython syntax checking for cython files.
+
+function! ale_linters#pyrex#cython#Handle(buffer, lines)
+    " Matches patterns line the following:
+    "
+    " test.pyx:13:25: Expected ':', found 'NEWLINE'
+    let pattern = '^.\+:\(\d\+\):\(\d\+\): \(.\+\)$'
+    let output = []
+
+    for line in a:lines
+        let l:match = matchlist(line, pattern)
+
+        if len(l:match) == 0
+            continue
+        endif
+
+        if l:match[3] =~# 'is not a valid module name$'
+            " Skip invalid module name errors.
+            continue
+        endif
+
+        call add(output, {
+        \   'bufnr': a:buffer,
+        \   'lnum': l:match[1] + 0,
+        \   'vcol': 0,
+        \   'col': l:match[2] + 0,
+        \   'text': l:match[3],
+        \   'type': 'E',
+        \   'nr': -1,
+        \})
+    endfor
+
+    return output
+endfunction
+
+call ALEAddLinter('pyrex', {
+\   'name': 'cython',
+\   'output_stream': 'stderr',
+\   'executable': 'cython',
+\   'command': g:ale#util#stdin_wrapper
+\       . ' .pyx cython --warning-extra -o '
+\       . g:ale#util#nul_file,
+\   'callback': 'ale_linters#pyrex#cython#Handle',
+\})