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" Author: Keith Smiley <k@keith.so>, w0rp <devw0rp@gmail.com>
" Description: mypy support for optional python typechecking
let g:ale_python_mypy_executable =
\ get(g:, 'ale_python_mypy_executable', 'mypy')
let g:ale_python_mypy_options = get(g:, 'ale_python_mypy_options', '')
let g:ale_python_mypy_use_global = get(g:, 'ale_python_mypy_use_global', 0)
function! ale_linters#python#mypy#GetExecutable(buffer) abort
if !ale#Var(a:buffer, 'python_mypy_use_global')
let l:virtualenv = ale#python#FindVirtualenv(a:buffer)
if !empty(l:virtualenv)
let l:ve_mypy = l:virtualenv . '/bin/mypy'
if executable(l:ve_mypy)
return l:ve_mypy
endif
endif
endif
return ale#Var(a:buffer, 'python_mypy_executable')
endfunction
function! ale_linters#python#mypy#GetCommand(buffer) abort
let l:project_root = ale#python#FindProjectRoot(a:buffer)
let l:cd_command = !empty(l:project_root)
\ ? ale#path#CdString(l:project_root)
\ : ''
let l:executable = ale_linters#python#mypy#GetExecutable(a:buffer)
return l:cd_command
\ . fnameescape(l:executable)
\ . ' --show-column-numbers '
\ . ale#Var(a:buffer, 'python_mypy_options')
\ . ' %s'
endfunction
function! ale_linters#python#mypy#Handle(buffer, lines) abort
" Look for lines like the following:
"
" file.py:4: error: No library stub file for module 'django.db'
"
" Lines like these should be ignored below:
"
" file.py:4: note: (Stub files are from https://github.com/python/typeshed)
let l:pattern = '\v^([a-zA-Z]?:?[^:]+):(\d+):?(\d+)?: (error|warning): (.+)$'
let l:output = []
let l:buffer_filename = expand('#' . a:buffer . ':p')
for l:match in ale#util#GetMatches(a:lines, l:pattern)
if l:buffer_filename[-len(l:match[1]):] !=# l:match[1]
continue
endif
call add(l:output, {
\ 'lnum': l:match[2] + 0,
\ 'col': l:match[3] + 0,
\ 'type': l:match[4] =~# 'error' ? 'E' : 'W',
\ 'text': l:match[5],
\})
endfor
return l:output
endfunction
call ale#linter#Define('python', {
\ 'name': 'mypy',
\ 'executable_callback': 'ale_linters#python#mypy#GetExecutable',
\ 'command_callback': 'ale_linters#python#mypy#GetCommand',
\ 'callback': 'ale_linters#python#mypy#Handle',
\ 'lint_file': 1,
\})
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