ale/autoload/ale/engine.vim
Chris Marchesi b7996803c9
Add ALEJobStarted User autocommand event
The ALELintPre and ALELintPost autocommand events are currently being
used by lightline-ale to refresh the status line and check the linter
status for a current buffer. One of the plugin's checks looks to see if
linters are currently running, via ale#engine#IsCheckingBuffer(). This
currently only works partially in certain situations. In my particular
case, working with Go files, this only seems to function properly when a
file is initially opened. Saving a file does not correctly update the
status.

This seems to be due to the fact that ALELintPre actually runs before
any jobs are carried out, making it plausible that hooking into
ALELintPre for the purpose of checking to see if there are any currently
running linters for a buffer is unreliable as it would be prone to
pretty obvious race conditions.

This adds a new User autocommand, ALEJobStarted, that gets fired at the
start of every new job that is successfully run. This allows a better
point to hook into checking the linter status of a buffer using
ale#engine#IsCheckingBuffer() by ensuring that at least one job has
started by the time IsCheckingBuffer is run.
2018-04-27 15:40:02 -07:00

967 lines
32 KiB
VimL

" Author: w0rp <devw0rp@gmail.com>
" Description: Backend execution and job management
" Executes linters in the background, using NeoVim or Vim 8 jobs
" Stores information for each job including:
"
" linter: The linter dictionary for the job.
" buffer: The buffer number for the job.
" output: The array of lines for the output of the job.
if !has_key(s:, 'job_info_map')
let s:job_info_map = {}
endif
" Associates LSP connection IDs with linter names.
if !has_key(s:, 'lsp_linter_map')
let s:lsp_linter_map = {}
endif
if !has_key(s:, 'executable_cache_map')
let s:executable_cache_map = {}
endif
function! ale#engine#ResetExecutableCache() abort
let s:executable_cache_map = {}
endfunction
" Check if files are executable, and if they are, remember that they are
" for subsequent calls. We'll keep checking until programs can be executed.
function! ale#engine#IsExecutable(buffer, executable) abort
if empty(a:executable)
" Don't log the executable check if the executable string is empty.
return 0
endif
" Check for a cached executable() check.
let l:result = get(s:executable_cache_map, a:executable, v:null)
if l:result isnot v:null
return l:result
endif
" Check if the file is executable, and convert -1 to 1.
let l:result = executable(a:executable) isnot 0
" Cache the executable check if we found it, or if the option to cache
" failing checks is on.
if l:result || g:ale_cache_executable_check_failures
let s:executable_cache_map[a:executable] = l:result
endif
if g:ale_history_enabled
call ale#history#Add(a:buffer, l:result, 'executable', a:executable)
endif
return l:result
endfunction
function! ale#engine#InitBufferInfo(buffer) abort
if !has_key(g:ale_buffer_info, a:buffer)
" job_list will hold the list of job IDs
" active_linter_list will hold the list of active linter names
" loclist holds the loclist items after all jobs have completed.
" temporary_file_list holds temporary files to be cleaned up
" temporary_directory_list holds temporary directories to be cleaned up
let g:ale_buffer_info[a:buffer] = {
\ 'job_list': [],
\ 'active_linter_list': [],
\ 'loclist': [],
\ 'temporary_file_list': [],
\ 'temporary_directory_list': [],
\}
return 1
endif
return 0
endfunction
" Clear LSP linter data for the linting engine.
function! ale#engine#ClearLSPData() abort
let s:lsp_linter_map = {}
endfunction
" This function is documented and part of the public API.
"
" Return 1 if ALE is busy checking a given buffer
function! ale#engine#IsCheckingBuffer(buffer) abort
let l:info = get(g:ale_buffer_info, a:buffer, {})
return !empty(get(l:info, 'active_linter_list', []))
endfunction
" Register a temporary file to be managed with the ALE engine for
" a current job run.
function! ale#engine#ManageFile(buffer, filename) abort
call add(g:ale_buffer_info[a:buffer].temporary_file_list, a:filename)
endfunction
" Same as the above, but manage an entire directory.
function! ale#engine#ManageDirectory(buffer, directory) abort
call add(g:ale_buffer_info[a:buffer].temporary_directory_list, a:directory)
endfunction
" Create a new temporary directory and manage it in one go.
function! ale#engine#CreateDirectory(buffer) abort
let l:temporary_directory = tempname()
" Create the temporary directory for the file, unreadable by 'other'
" users.
call mkdir(l:temporary_directory, '', 0750)
call ale#engine#ManageDirectory(a:buffer, l:temporary_directory)
return l:temporary_directory
endfunction
function! ale#engine#RemoveManagedFiles(buffer) abort
let l:info = get(g:ale_buffer_info, a:buffer, {})
" We can't delete anything in a sandbox, so wait until we escape from
" it to delete temporary files and directories.
if ale#util#InSandbox()
return
endif
" Delete files with a call akin to a plan `rm` command.
if has_key(l:info, 'temporary_file_list')
for l:filename in l:info.temporary_file_list
call delete(l:filename)
endfor
let l:info.temporary_file_list = []
endif
" Delete directories like `rm -rf`.
" Directories are handled differently from files, so paths that are
" intended to be single files can be set up for automatic deletion without
" accidentally deleting entire directories.
if has_key(l:info, 'temporary_directory_list')
for l:directory in l:info.temporary_directory_list
call delete(l:directory, 'rf')
endfor
let l:info.temporary_directory_list = []
endif
endfunction
function! s:GatherOutput(job_id, line) abort
if has_key(s:job_info_map, a:job_id)
call add(s:job_info_map[a:job_id].output, a:line)
endif
endfunction
function! ale#engine#HandleLoclist(linter_name, buffer, loclist) abort
let l:info = get(g:ale_buffer_info, a:buffer, {})
if empty(l:info)
return
endif
" Remove this linter from the list of active linters.
" This may have already been done when the job exits.
call filter(l:info.active_linter_list, 'v:val isnot# a:linter_name')
" Make some adjustments to the loclists to fix common problems, and also
" to set default values for loclist items.
let l:linter_loclist = ale#engine#FixLocList(a:buffer, a:linter_name, a:loclist)
" Remove previous items for this linter.
call filter(l:info.loclist, 'v:val.linter_name isnot# a:linter_name')
" We don't need to add items or sort the list when this list is empty.
if !empty(l:linter_loclist)
" Add the new items.
call extend(l:info.loclist, l:linter_loclist)
" Sort the loclist again.
" We need a sorted list so we can run a binary search against it
" for efficient lookup of the messages in the cursor handler.
call sort(l:info.loclist, 'ale#util#LocItemCompare')
endif
if ale#ShouldDoNothing(a:buffer)
return
endif
call ale#engine#SetResults(a:buffer, l:info.loclist)
endfunction
function! s:HandleExit(job_id, exit_code) abort
if !has_key(s:job_info_map, a:job_id)
return
endif
let l:job_info = s:job_info_map[a:job_id]
let l:linter = l:job_info.linter
let l:output = l:job_info.output
let l:buffer = l:job_info.buffer
let l:next_chain_index = l:job_info.next_chain_index
if g:ale_history_enabled
call ale#history#SetExitCode(l:buffer, a:job_id, a:exit_code)
endif
" Remove this job from the list.
call ale#job#Stop(a:job_id)
call remove(s:job_info_map, a:job_id)
call filter(g:ale_buffer_info[l:buffer].job_list, 'v:val isnot# a:job_id')
call filter(g:ale_buffer_info[l:buffer].active_linter_list, 'v:val isnot# l:linter.name')
" Stop here if we land in the handle for a job completing if we're in
" a sandbox.
if ale#util#InSandbox()
return
endif
if has('nvim') && !empty(l:output) && empty(l:output[-1])
call remove(l:output, -1)
endif
if l:next_chain_index < len(get(l:linter, 'command_chain', []))
call s:InvokeChain(l:buffer, l:linter, l:next_chain_index, l:output)
return
endif
" Log the output of the command for ALEInfo if we should.
if g:ale_history_enabled && g:ale_history_log_output
call ale#history#RememberOutput(l:buffer, a:job_id, l:output[:])
endif
let l:loclist = ale#util#GetFunction(l:linter.callback)(l:buffer, l:output)
call ale#engine#HandleLoclist(l:linter.name, l:buffer, l:loclist)
endfunction
function! s:HandleLSPDiagnostics(conn_id, response) abort
let l:linter_name = s:lsp_linter_map[a:conn_id]
let l:filename = ale#path#FromURI(a:response.params.uri)
let l:buffer = bufnr(l:filename)
if l:buffer <= 0
return
endif
let l:loclist = ale#lsp#response#ReadDiagnostics(a:response)
call ale#engine#HandleLoclist(l:linter_name, l:buffer, l:loclist)
endfunction
function! s:HandleTSServerDiagnostics(response, error_type) abort
let l:buffer = bufnr(a:response.body.file)
let l:info = get(g:ale_buffer_info, l:buffer, {})
if empty(l:info)
return
endif
let l:thislist = ale#lsp#response#ReadTSServerDiagnostics(a:response)
" tsserver sends syntax and semantic errors in separate messages, so we
" have to collect the messages separately for each buffer and join them
" back together again.
if a:error_type is# 'syntax'
let l:info.syntax_loclist = l:thislist
else
let l:info.semantic_loclist = l:thislist
endif
let l:loclist = get(l:info, 'semantic_loclist', [])
\ + get(l:info, 'syntax_loclist', [])
call ale#engine#HandleLoclist('tsserver', l:buffer, l:loclist)
endfunction
function! s:HandleLSPErrorMessage(error_message) abort
execute 'echoerr ''Error from LSP:'''
for l:line in split(a:error_message, "\n")
execute 'echoerr l:line'
endfor
endfunction
function! ale#engine#HandleLSPResponse(conn_id, response) abort
let l:method = get(a:response, 'method', '')
if get(a:response, 'jsonrpc', '') is# '2.0' && has_key(a:response, 'error')
" Uncomment this line to print LSP error messages.
" call s:HandleLSPErrorMessage(a:response.error.message)
elseif l:method is# 'textDocument/publishDiagnostics'
call s:HandleLSPDiagnostics(a:conn_id, a:response)
elseif get(a:response, 'type', '') is# 'event'
\&& get(a:response, 'event', '') is# 'semanticDiag'
call s:HandleTSServerDiagnostics(a:response, 'semantic')
elseif get(a:response, 'type', '') is# 'event'
\&& get(a:response, 'event', '') is# 'syntaxDiag'
call s:HandleTSServerDiagnostics(a:response, 'syntax')
endif
endfunction
function! ale#engine#SetResults(buffer, loclist) abort
let l:linting_is_done = !ale#engine#IsCheckingBuffer(a:buffer)
" Set signs first. This could potentially fix some line numbers.
" The List could be sorted again here by SetSigns.
if g:ale_set_signs
call ale#sign#SetSigns(a:buffer, a:loclist)
endif
if g:ale_set_quickfix || g:ale_set_loclist
call ale#list#SetLists(a:buffer, a:loclist)
endif
if exists('*ale#statusline#Update')
" Don't load/run if not already loaded.
call ale#statusline#Update(a:buffer, a:loclist)
endif
if g:ale_set_highlights
call ale#highlight#SetHighlights(a:buffer, a:loclist)
endif
if l:linting_is_done
if g:ale_echo_cursor
" Try and echo the warning now.
" This will only do something meaningful if we're in normal mode.
call ale#cursor#EchoCursorWarning()
endif
" Reset the save event marker, used for opening windows, etc.
call setbufvar(a:buffer, 'ale_save_event_fired', 0)
" Set a marker showing how many times a buffer has been checked.
call setbufvar(
\ a:buffer,
\ 'ale_linted',
\ getbufvar(a:buffer, 'ale_linted', 0) + 1
\)
" Automatically remove all managed temporary files and directories
" now that all jobs have completed.
call ale#engine#RemoveManagedFiles(a:buffer)
" Call user autocommands. This allows users to hook into ALE's lint cycle.
silent doautocmd <nomodeline> User ALELintPost
" Old DEPRECATED name; call it for backwards compatibility.
silent doautocmd <nomodeline> User ALELint
endif
endfunction
function! s:RemapItemTypes(type_map, loclist) abort
for l:item in a:loclist
let l:key = l:item.type
\ . (get(l:item, 'sub_type', '') is# 'style' ? 'S' : '')
let l:new_key = get(a:type_map, l:key, '')
if l:new_key is# 'E'
\|| l:new_key is# 'ES'
\|| l:new_key is# 'W'
\|| l:new_key is# 'WS'
\|| l:new_key is# 'I'
let l:item.type = l:new_key[0]
if l:new_key is# 'ES' || l:new_key is# 'WS'
let l:item.sub_type = 'style'
elseif has_key(l:item, 'sub_type')
call remove(l:item, 'sub_type')
endif
endif
endfor
endfunction
function! ale#engine#FixLocList(buffer, linter_name, loclist) abort
let l:bufnr_map = {}
let l:new_loclist = []
" Some errors have line numbers beyond the end of the file,
" so we need to adjust them so they set the error at the last line
" of the file instead.
let l:last_line_number = ale#util#GetLineCount(a:buffer)
for l:old_item in a:loclist
" Copy the loclist item with some default values and corrections.
"
" line and column numbers will be converted to numbers.
" The buffer will default to the buffer being checked.
" The vcol setting will default to 0, a byte index.
" The error type will default to 'E' for errors.
" The error number will default to -1.
"
" The line number and text are the only required keys.
"
" The linter_name will be set on the errors so it can be used in
" output, filtering, etc..
let l:item = {
\ 'bufnr': a:buffer,
\ 'text': l:old_item.text,
\ 'lnum': str2nr(l:old_item.lnum),
\ 'col': str2nr(get(l:old_item, 'col', 0)),
\ 'vcol': 0,
\ 'type': get(l:old_item, 'type', 'E'),
\ 'nr': get(l:old_item, 'nr', -1),
\ 'linter_name': a:linter_name,
\}
if has_key(l:old_item, 'code')
let l:item.code = l:old_item.code
endif
if has_key(l:old_item, 'filename')
\&& !ale#path#IsTempName(l:old_item.filename)
" Use the filename given.
" Temporary files are assumed to be for this buffer,
" and the filename is not included then, because it looks bad
" in the loclist window.
let l:filename = l:old_item.filename
let l:item.filename = l:filename
if has_key(l:old_item, 'bufnr')
" If a buffer number is also given, include that too.
" If Vim detects that he buffer number is valid, it will
" be used instead of the filename.
let l:item.bufnr = l:old_item.bufnr
elseif has_key(l:bufnr_map, l:filename)
" Get the buffer number from the map, which can be faster.
let l:item.bufnr = l:bufnr_map[l:filename]
else
" Look up the buffer number.
let l:item.bufnr = bufnr(l:filename)
let l:bufnr_map[l:filename] = l:item.bufnr
endif
elseif has_key(l:old_item, 'bufnr')
let l:item.bufnr = l:old_item.bufnr
endif
if has_key(l:old_item, 'detail')
let l:item.detail = l:old_item.detail
endif
" Pass on a end_col key if set, used for highlights.
if has_key(l:old_item, 'end_col')
let l:item.end_col = str2nr(l:old_item.end_col)
endif
if has_key(l:old_item, 'end_lnum')
let l:item.end_lnum = str2nr(l:old_item.end_lnum)
endif
if has_key(l:old_item, 'sub_type')
let l:item.sub_type = l:old_item.sub_type
endif
if l:item.lnum < 1
" When errors appear before line 1, put them at line 1.
let l:item.lnum = 1
elseif l:item.bufnr == a:buffer && l:item.lnum > l:last_line_number
" When errors go beyond the end of the file, put them at the end.
" This is only done for the current buffer.
let l:item.lnum = l:last_line_number
elseif get(l:old_item, 'vcol', 0)
" Convert virtual column positions to byte positions.
" The positions will be off if the buffer has changed recently.
let l:line = getbufline(a:buffer, l:item.lnum)[0]
let l:item.col = ale#util#Col(l:line, l:item.col)
if has_key(l:item, 'end_col')
let l:end_line = get(l:item, 'end_lnum', l:line) != l:line
\ ? getbufline(a:buffer, l:item.end_lnum)[0]
\ : l:line
let l:item.end_col = ale#util#Col(l:end_line, l:item.end_col)
endif
endif
call add(l:new_loclist, l:item)
endfor
let l:type_map = get(ale#Var(a:buffer, 'type_map'), a:linter_name, {})
if !empty(l:type_map)
call s:RemapItemTypes(l:type_map, l:new_loclist)
endif
return l:new_loclist
endfunction
" Given part of a command, replace any % with %%, so that no characters in
" the string will be replaced with filenames, etc.
function! ale#engine#EscapeCommandPart(command_part) abort
return substitute(a:command_part, '%', '%%', 'g')
endfunction
function! s:CreateTemporaryFileForJob(buffer, temporary_file) abort
if empty(a:temporary_file)
" There is no file, so we didn't create anything.
return 0
endif
let l:temporary_directory = fnamemodify(a:temporary_file, ':h')
" Create the temporary directory for the file, unreadable by 'other'
" users.
call mkdir(l:temporary_directory, '', 0750)
" Automatically delete the directory later.
call ale#engine#ManageDirectory(a:buffer, l:temporary_directory)
" Write the buffer out to a file.
let l:lines = getbufline(a:buffer, 1, '$')
call ale#util#Writefile(a:buffer, l:lines, a:temporary_file)
return 1
endfunction
" Run a job.
"
" Returns 1 when the job was started successfully.
function! s:RunJob(options) abort
let l:command = a:options.command
let l:buffer = a:options.buffer
let l:linter = a:options.linter
let l:output_stream = a:options.output_stream
let l:next_chain_index = a:options.next_chain_index
let l:read_buffer = a:options.read_buffer
let l:info = g:ale_buffer_info[l:buffer]
if empty(l:command)
return 0
endif
let [l:temporary_file, l:command] = ale#command#FormatCommand(l:buffer, l:command, l:read_buffer)
if s:CreateTemporaryFileForJob(l:buffer, l:temporary_file)
" If a temporary filename has been formatted in to the command, then
" we do not need to send the Vim buffer to the command.
let l:read_buffer = 0
endif
" Add a newline to commands which need it.
" This is only used for Flow for now, and is not documented.
if l:linter.add_newline
if has('win32')
let l:command = l:command . '; echo.'
else
let l:command = l:command . '; echo'
endif
endif
let l:command = ale#job#PrepareCommand(l:buffer, l:command)
let l:job_options = {
\ 'mode': 'nl',
\ 'exit_cb': function('s:HandleExit'),
\}
if l:output_stream is# 'stderr'
let l:job_options.err_cb = function('s:GatherOutput')
elseif l:output_stream is# 'both'
let l:job_options.out_cb = function('s:GatherOutput')
let l:job_options.err_cb = function('s:GatherOutput')
else
let l:job_options.out_cb = function('s:GatherOutput')
endif
if get(g:, 'ale_run_synchronously') == 1
" Find a unique Job value to use, which will be the same as the ID for
" running commands synchronously. This is only for test code.
let l:job_id = len(s:job_info_map) + 1
while has_key(s:job_info_map, l:job_id)
let l:job_id += 1
endwhile
else
let l:job_id = ale#job#Start(l:command, l:job_options)
endif
let l:status = 'failed'
" Only proceed if the job is being run.
if l:job_id
" Add the job to the list of jobs, so we can track them.
call add(l:info.job_list, l:job_id)
if index(l:info.active_linter_list, l:linter.name) < 0
call add(l:info.active_linter_list, l:linter.name)
endif
let l:status = 'started'
" Store the ID for the job in the map to read back again.
let s:job_info_map[l:job_id] = {
\ 'linter': l:linter,
\ 'buffer': l:buffer,
\ 'output': [],
\ 'next_chain_index': l:next_chain_index,
\}
silent doautocmd <nomodeline> User ALEJobStarted
endif
if g:ale_history_enabled
call ale#history#Add(l:buffer, l:status, l:job_id, l:command)
endif
if get(g:, 'ale_run_synchronously') == 1
" Run a command synchronously if this test option is set.
let s:job_info_map[l:job_id].output = systemlist(
\ type(l:command) == type([])
\ ? join(l:command[0:1]) . ' ' . ale#Escape(l:command[2])
\ : l:command
\)
call l:job_options.exit_cb(l:job_id, v:shell_error)
endif
return l:job_id != 0
endfunction
" Determine which commands to run for a link in a command chain, or
" just a regular command.
function! ale#engine#ProcessChain(buffer, linter, chain_index, input) abort
let l:output_stream = get(a:linter, 'output_stream', 'stdout')
let l:read_buffer = a:linter.read_buffer
let l:chain_index = a:chain_index
let l:input = a:input
if has_key(a:linter, 'command_chain')
while l:chain_index < len(a:linter.command_chain)
" Run a chain of commands, one asynchronous command after the other,
" so that many programs can be run in a sequence.
let l:chain_item = a:linter.command_chain[l:chain_index]
if l:chain_index == 0
" The first callback in the chain takes only a buffer number.
let l:command = ale#util#GetFunction(l:chain_item.callback)(
\ a:buffer
\)
else
" The second callback in the chain takes some input too.
let l:command = ale#util#GetFunction(l:chain_item.callback)(
\ a:buffer,
\ l:input
\)
endif
if !empty(l:command)
" We hit a command to run, so we'll execute that
" The chain item can override the output_stream option.
if has_key(l:chain_item, 'output_stream')
let l:output_stream = l:chain_item.output_stream
endif
" The chain item can override the read_buffer option.
if has_key(l:chain_item, 'read_buffer')
let l:read_buffer = l:chain_item.read_buffer
elseif l:chain_index != len(a:linter.command_chain) - 1
" Don't read the buffer for commands besides the last one
" in the chain by default.
let l:read_buffer = 0
endif
break
endif
" Command chain items can return an empty string to indicate that
" a command should be skipped, so we should try the next item
" with no input.
let l:input = []
let l:chain_index += 1
endwhile
else
let l:command = ale#linter#GetCommand(a:buffer, a:linter)
endif
return {
\ 'command': l:command,
\ 'buffer': a:buffer,
\ 'linter': a:linter,
\ 'output_stream': l:output_stream,
\ 'next_chain_index': l:chain_index + 1,
\ 'read_buffer': l:read_buffer,
\}
endfunction
function! s:InvokeChain(buffer, linter, chain_index, input) abort
let l:options = ale#engine#ProcessChain(a:buffer, a:linter, a:chain_index, a:input)
return s:RunJob(l:options)
endfunction
function! s:StopCurrentJobs(buffer, include_lint_file_jobs) abort
let l:info = get(g:ale_buffer_info, a:buffer, {})
let l:new_job_list = []
let l:new_active_linter_list = []
for l:job_id in get(l:info, 'job_list', [])
let l:job_info = get(s:job_info_map, l:job_id, {})
if !empty(l:job_info)
if a:include_lint_file_jobs || !l:job_info.linter.lint_file
call ale#job#Stop(l:job_id)
call remove(s:job_info_map, l:job_id)
else
call add(l:new_job_list, l:job_id)
" Linters with jobs still running are still active.
call add(l:new_active_linter_list, l:job_info.linter.name)
endif
endif
endfor
" Remove duplicates from the active linter list.
call uniq(sort(l:new_active_linter_list))
" Update the List, so it includes only the jobs we still need.
let l:info.job_list = l:new_job_list
" Update the active linter list, clearing out anything not running.
let l:info.active_linter_list = l:new_active_linter_list
endfunction
function! s:CheckWithLSP(buffer, linter) abort
let l:info = g:ale_buffer_info[a:buffer]
let l:lsp_details = ale#linter#StartLSP(
\ a:buffer,
\ a:linter,
\ function('ale#engine#HandleLSPResponse'),
\)
if empty(l:lsp_details)
return 0
endif
let l:id = l:lsp_details.connection_id
let l:root = l:lsp_details.project_root
" Remember the linter this connection is for.
let s:lsp_linter_map[l:id] = a:linter.name
let l:change_message = a:linter.lsp is# 'tsserver'
\ ? ale#lsp#tsserver_message#Geterr(a:buffer)
\ : ale#lsp#message#DidChange(a:buffer)
let l:request_id = ale#lsp#Send(l:id, l:change_message, l:root)
" If this was a file save event, also notify the server of that.
if a:linter.lsp isnot# 'tsserver'
\&& getbufvar(a:buffer, 'ale_save_event_fired', 0)
let l:save_message = ale#lsp#message#DidSave(a:buffer)
let l:request_id = ale#lsp#Send(l:id, l:save_message, l:root)
endif
if l:request_id != 0
if index(l:info.active_linter_list, a:linter.name) < 0
call add(l:info.active_linter_list, a:linter.name)
endif
endif
return l:request_id != 0
endfunction
function! s:RemoveProblemsForDisabledLinters(buffer, linters) abort
" Figure out which linters are still enabled, and remove
" problems for linters which are no longer enabled.
let l:name_map = {}
for l:linter in a:linters
let l:name_map[l:linter.name] = 1
endfor
call filter(
\ get(g:ale_buffer_info[a:buffer], 'loclist', []),
\ 'get(l:name_map, get(v:val, ''linter_name''))',
\)
endfunction
function! s:AddProblemsFromOtherBuffers(buffer, linters) abort
let l:filename = expand('#' . a:buffer . ':p')
let l:loclist = []
let l:name_map = {}
" Build a map of the active linters.
for l:linter in a:linters
let l:name_map[l:linter.name] = 1
endfor
" Find the items from other buffers, for the linters that are enabled.
for l:info in values(g:ale_buffer_info)
for l:item in l:info.loclist
if has_key(l:item, 'filename')
\&& l:item.filename is# l:filename
\&& has_key(l:name_map, l:item.linter_name)
" Copy the items and set the buffer numbers to this one.
let l:new_item = copy(l:item)
let l:new_item.bufnr = a:buffer
call add(l:loclist, l:new_item)
endif
endfor
endfor
if !empty(l:loclist)
call sort(l:loclist, function('ale#util#LocItemCompareWithText'))
call uniq(l:loclist, function('ale#util#LocItemCompareWithText'))
" Set the loclist variable, used by some parts of ALE.
let g:ale_buffer_info[a:buffer].loclist = l:loclist
call ale#engine#SetResults(a:buffer, l:loclist)
endif
endfunction
" Run a linter for a buffer.
"
" Returns 1 if the linter was successfully run.
function! s:RunLinter(buffer, linter) abort
if !empty(a:linter.lsp)
return s:CheckWithLSP(a:buffer, a:linter)
else
let l:executable = ale#linter#GetExecutable(a:buffer, a:linter)
if ale#engine#IsExecutable(a:buffer, l:executable)
return s:InvokeChain(a:buffer, a:linter, 0, [])
endif
endif
return 0
endfunction
function! ale#engine#RunLinters(buffer, linters, should_lint_file) abort
" Initialise the buffer information if needed.
let l:new_buffer = ale#engine#InitBufferInfo(a:buffer)
call s:StopCurrentJobs(a:buffer, a:should_lint_file)
call s:RemoveProblemsForDisabledLinters(a:buffer, a:linters)
" We can only clear the results if we aren't checking the buffer.
let l:can_clear_results = !ale#engine#IsCheckingBuffer(a:buffer)
silent doautocmd <nomodeline> User ALELintPre
for l:linter in a:linters
" Only run lint_file linters if we should.
if !l:linter.lint_file || a:should_lint_file
if s:RunLinter(a:buffer, l:linter)
" If a single linter ran, we shouldn't clear everything.
let l:can_clear_results = 0
endif
else
" If we skipped running a lint_file linter still in the list,
" we shouldn't clear everything.
let l:can_clear_results = 0
endif
endfor
" Clear the results if we can. This needs to be done when linters are
" disabled, or ALE itself is disabled.
if l:can_clear_results
call ale#engine#SetResults(a:buffer, [])
elseif l:new_buffer
call s:AddProblemsFromOtherBuffers(a:buffer, a:linters)
endif
endfunction
" Clean up a buffer.
"
" This function will stop all current jobs for the buffer,
" clear the state of everything, and remove the Dictionary for managing
" the buffer.
function! ale#engine#Cleanup(buffer) abort
" Don't bother with cleanup code when newer NeoVim versions are exiting.
if get(v:, 'exiting', v:null) isnot v:null
return
endif
if !has_key(g:ale_buffer_info, a:buffer)
return
endif
call ale#engine#RunLinters(a:buffer, [], 1)
call remove(g:ale_buffer_info, a:buffer)
endfunction
" Given a buffer number, return the warnings and errors for a given buffer.
function! ale#engine#GetLoclist(buffer) abort
if !has_key(g:ale_buffer_info, a:buffer)
return []
endif
return g:ale_buffer_info[a:buffer].loclist
endfunction
" This function can be called with a timeout to wait for all jobs to finish.
" If the jobs to not finish in the given number of milliseconds,
" an exception will be thrown.
"
" The time taken will be a very rough approximation, and more time may be
" permitted than is specified.
function! ale#engine#WaitForJobs(deadline) abort
let l:start_time = ale#util#ClockMilliseconds()
if l:start_time == 0
throw 'Failed to read milliseconds from the clock!'
endif
let l:job_list = []
" Gather all of the jobs from every buffer.
for l:info in values(g:ale_buffer_info)
call extend(l:job_list, get(l:info, 'job_list', []))
endfor
" NeoVim has a built-in API for this, so use that.
if has('nvim')
let l:nvim_code_list = jobwait(l:job_list, a:deadline)
if index(l:nvim_code_list, -1) >= 0
throw 'Jobs did not complete on time!'
endif
return
endif
let l:should_wait_more = 1
while l:should_wait_more
let l:should_wait_more = 0
for l:job_id in l:job_list
if ale#job#IsRunning(l:job_id)
let l:now = ale#util#ClockMilliseconds()
if l:now - l:start_time > a:deadline
" Stop waiting after a timeout, so we don't wait forever.
throw 'Jobs did not complete on time!'
endif
" Wait another 10 milliseconds
let l:should_wait_more = 1
sleep 10ms
break
endif
endfor
endwhile
" Sleep for a small amount of time after all jobs finish.
" This seems to be enough to let handlers after jobs end run, and
" prevents the occasional failure where this function exits after jobs
" end, but before handlers are run.
sleep 10ms
" We must check the buffer data again to see if new jobs started
" for command_chain linters.
let l:has_new_jobs = 0
" Check again to see if any jobs are running.
for l:info in values(g:ale_buffer_info)
for l:job_id in get(l:info, 'job_list', [])
if ale#job#IsRunning(l:job_id)
let l:has_new_jobs = 1
break
endif
endfor
endfor
if l:has_new_jobs
" We have to wait more. Offset the timeout by the time taken so far.
let l:now = ale#util#ClockMilliseconds()
let l:new_deadline = a:deadline - (l:now - l:start_time)
if l:new_deadline <= 0
" Enough time passed already, so stop immediately.
throw 'Jobs did not complete on time!'
endif
call ale#engine#WaitForJobs(l:new_deadline)
endif
endfunction