634 lines
19 KiB
VimL
634 lines
19 KiB
VimL
" Author: w0rp <devw0rp@gmail.com>
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" Description: Completion support for LSP linters
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" The omnicompletion menu is shown through a special Plug mapping which is
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" only valid in Insert mode. This way, feedkeys() won't send these keys if you
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" quit Insert mode quickly enough.
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inoremap <silent> <Plug>(ale_show_completion_menu) <C-x><C-o>
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" If we hit the key sequence in normal mode, then we won't show the menu, so
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" we should restore the old settings right away.
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nnoremap <silent> <Plug>(ale_show_completion_menu) :call ale#completion#RestoreCompletionOptions()<CR>
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cnoremap <silent> <Plug>(ale_show_completion_menu) <Nop>
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vnoremap <silent> <Plug>(ale_show_completion_menu) <Nop>
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onoremap <silent> <Plug>(ale_show_completion_menu) <Nop>
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let g:ale_completion_delay = get(g:, 'ale_completion_delay', 100)
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let g:ale_completion_excluded_words = get(g:, 'ale_completion_excluded_words', [])
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let g:ale_completion_max_suggestions = get(g:, 'ale_completion_max_suggestions', 50)
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let s:timer_id = -1
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let s:last_done_pos = []
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" CompletionItemKind values from the LSP protocol.
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let s:LSP_COMPLETION_TEXT_KIND = 1
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let s:LSP_COMPLETION_METHOD_KIND = 2
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let s:LSP_COMPLETION_FUNCTION_KIND = 3
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let s:LSP_COMPLETION_CONSTRUCTOR_KIND = 4
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let s:LSP_COMPLETION_FIELD_KIND = 5
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let s:LSP_COMPLETION_VARIABLE_KIND = 6
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let s:LSP_COMPLETION_CLASS_KIND = 7
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let s:LSP_COMPLETION_INTERFACE_KIND = 8
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let s:LSP_COMPLETION_MODULE_KIND = 9
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let s:LSP_COMPLETION_PROPERTY_KIND = 10
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let s:LSP_COMPLETION_UNIT_KIND = 11
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let s:LSP_COMPLETION_VALUE_KIND = 12
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let s:LSP_COMPLETION_ENUM_KIND = 13
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let s:LSP_COMPLETION_KEYWORD_KIND = 14
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let s:LSP_COMPLETION_SNIPPET_KIND = 15
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let s:LSP_COMPLETION_COLOR_KIND = 16
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let s:LSP_COMPLETION_FILE_KIND = 17
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let s:LSP_COMPLETION_REFERENCE_KIND = 18
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let s:LSP_INSERT_TEXT_FORMAT_PLAIN = 1
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let s:LSP_INSERT_TEXT_FORMAT_SNIPPET = 2
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let s:lisp_regex = '\v[a-zA-Z_\-][a-zA-Z_\-0-9]*$'
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" Regular expressions for checking the characters in the line before where
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" the insert cursor is. If one of these matches, we'll check for completions.
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let s:should_complete_map = {
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\ '<default>': '\v[a-zA-Z$_][a-zA-Z$_0-9]*$|\.$',
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\ 'clojure': s:lisp_regex,
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\ 'lisp': s:lisp_regex,
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\ 'typescript': '\v[a-zA-Z$_][a-zA-Z$_0-9]*$|\.$|''$|"$',
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\ 'rust': '\v[a-zA-Z$_][a-zA-Z$_0-9]*$|\.$|::$',
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\}
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" Regular expressions for finding the start column to replace with completion.
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let s:omni_start_map = {
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\ '<default>': '\v[a-zA-Z$_][a-zA-Z$_0-9]*$',
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\}
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" A map of exact characters for triggering LSP completions.
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let s:trigger_character_map = {
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\ '<default>': ['.'],
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\ 'typescript': ['.', '''', '"'],
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\ 'rust': ['.', '::'],
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\}
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function! s:GetFiletypeValue(map, filetype) abort
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for l:part in reverse(split(a:filetype, '\.'))
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let l:regex = get(a:map, l:part, [])
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if !empty(l:regex)
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return l:regex
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endif
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endfor
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" Use the default regex for other files.
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return a:map['<default>']
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endfunction
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" Check if we should look for completions for a language.
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function! ale#completion#GetPrefix(filetype, line, column) abort
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let l:regex = s:GetFiletypeValue(s:should_complete_map, a:filetype)
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" The column we're using completions for is where we are inserting text,
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" like so:
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" abc
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" ^
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" So we need check the text in the column before that position.
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return matchstr(getline(a:line)[: a:column - 2], l:regex)
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endfunction
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function! ale#completion#GetTriggerCharacter(filetype, prefix) abort
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if empty(a:prefix)
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return ''
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endif
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let l:char_list = s:GetFiletypeValue(s:trigger_character_map, a:filetype)
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if index(l:char_list, a:prefix) >= 0
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return a:prefix
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endif
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return ''
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endfunction
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function! ale#completion#Filter(buffer, filetype, suggestions, prefix) abort
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let l:excluded_words = ale#Var(a:buffer, 'completion_excluded_words')
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if empty(a:prefix)
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let l:filtered_suggestions = a:suggestions
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else
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let l:triggers = s:GetFiletypeValue(s:trigger_character_map, a:filetype)
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" For completing...
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" foo.
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" ^
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" We need to include all of the given suggestions.
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if index(l:triggers, a:prefix) >= 0 || empty(a:prefix)
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let l:filtered_suggestions = a:suggestions
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else
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let l:filtered_suggestions = []
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" Filter suggestions down to those starting with the prefix we
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" used for finding suggestions in the first place.
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"
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" Some completion tools will include suggestions which don't even
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" start with the characters we have already typed.
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for l:item in a:suggestions
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" A List of String values or a List of completion item
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" Dictionaries is accepted here.
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let l:word = type(l:item) is v:t_string ? l:item : l:item.word
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" Add suggestions if the suggestion starts with a
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" case-insensitive match for the prefix.
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if l:word[: len(a:prefix) - 1] is? a:prefix
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call add(l:filtered_suggestions, l:item)
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endif
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endfor
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endif
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endif
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if !empty(l:excluded_words)
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" Copy the List if needed. We don't want to modify the argument.
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" We shouldn't make a copy if we don't need to.
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if l:filtered_suggestions is a:suggestions
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let l:filtered_suggestions = copy(a:suggestions)
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endif
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" Remove suggestions with words in the exclusion List.
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call filter(
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\ l:filtered_suggestions,
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\ 'index(l:excluded_words, type(v:val) is v:t_string ? v:val : v:val.word) < 0',
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\)
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endif
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return l:filtered_suggestions
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endfunction
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function! s:ReplaceCompletionOptions() abort
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" Remember the old omnifunc value, if there is one.
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" If we don't store an old one, we'll just never reset the option.
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" This will stop some random exceptions from appearing.
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if !exists('b:ale_old_omnifunc') && !empty(&l:omnifunc)
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let b:ale_old_omnifunc = &l:omnifunc
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endif
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let &l:omnifunc = 'ale#completion#OmniFunc'
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let l:info = get(b:, 'ale_completion_info', {})
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if !get(l:info, 'manual')
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if !exists('b:ale_old_completeopt')
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let b:ale_old_completeopt = &l:completeopt
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endif
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if &l:completeopt =~# 'preview'
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let &l:completeopt = 'menu,menuone,preview,noselect,noinsert'
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else
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let &l:completeopt = 'menu,menuone,noselect,noinsert'
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endif
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endif
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endfunction
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function! ale#completion#RestoreCompletionOptions() abort
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" Reset settings when completion is done.
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if exists('b:ale_old_omnifunc')
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if b:ale_old_omnifunc isnot# 'pythoncomplete#Complete'
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let &l:omnifunc = b:ale_old_omnifunc
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endif
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unlet b:ale_old_omnifunc
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endif
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if exists('b:ale_old_completeopt')
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let &l:completeopt = b:ale_old_completeopt
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unlet b:ale_old_completeopt
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endif
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endfunction
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function! ale#completion#OmniFunc(findstart, base) abort
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if a:findstart
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let l:line = b:ale_completion_info.line
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let l:column = b:ale_completion_info.column
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let l:regex = s:GetFiletypeValue(s:omni_start_map, &filetype)
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let l:up_to_column = getline(l:line)[: l:column - 2]
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let l:match = matchstr(l:up_to_column, l:regex)
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return l:column - len(l:match) - 1
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else
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" Parse a new response if there is one.
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if exists('b:ale_completion_response')
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\&& exists('b:ale_completion_parser')
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let l:response = b:ale_completion_response
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let l:parser = b:ale_completion_parser
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unlet b:ale_completion_response
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unlet b:ale_completion_parser
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let b:ale_completion_result = function(l:parser)(l:response)
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endif
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call s:ReplaceCompletionOptions()
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return get(b:, 'ale_completion_result', [])
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endif
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endfunction
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function! ale#completion#Show(response, completion_parser) abort
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if ale#util#Mode() isnot# 'i'
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return
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endif
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" Set the list in the buffer, temporarily replace omnifunc with our
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" function, and then start omni-completion.
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let b:ale_completion_response = a:response
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let b:ale_completion_parser = a:completion_parser
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" Replace completion options shortly before opening the menu.
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call s:ReplaceCompletionOptions()
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call timer_start(0, {-> ale#util#FeedKeys("\<Plug>(ale_show_completion_menu)")})
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endfunction
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function! s:CompletionStillValid(request_id) abort
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let [l:line, l:column] = getpos('.')[1:2]
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return ale#util#Mode() is# 'i'
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\&& has_key(b:, 'ale_completion_info')
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\&& b:ale_completion_info.request_id == a:request_id
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\&& b:ale_completion_info.line == l:line
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\&& b:ale_completion_info.column == l:column
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endfunction
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function! ale#completion#ParseTSServerCompletions(response) abort
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let l:names = []
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for l:suggestion in a:response.body
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call add(l:names, l:suggestion.name)
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endfor
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return l:names
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endfunction
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function! ale#completion#ParseTSServerCompletionEntryDetails(response) abort
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let l:buffer = bufnr('')
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let l:results = []
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let l:names_with_details = []
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for l:suggestion in a:response.body
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let l:displayParts = []
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for l:part in l:suggestion.displayParts
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call add(l:displayParts, l:part.text)
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endfor
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" Each one of these parts has 'kind' properties
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let l:documentationParts = []
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for l:part in get(l:suggestion, 'documentation', [])
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call add(l:documentationParts, l:part.text)
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endfor
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if l:suggestion.kind is# 'className'
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let l:kind = 'f'
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elseif l:suggestion.kind is# 'parameterName'
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let l:kind = 'f'
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else
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let l:kind = 'v'
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endif
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" See :help complete-items
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call add(l:results, {
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\ 'word': l:suggestion.name,
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\ 'kind': l:kind,
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\ 'icase': 1,
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\ 'menu': join(l:displayParts, ''),
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\ 'info': join(l:documentationParts, ''),
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\})
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endfor
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let l:names = getbufvar(l:buffer, 'ale_tsserver_completion_names', [])
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if !empty(l:names) && len(l:names) != len(l:results)
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let l:names_with_details = map(copy(l:results), 'v:val.word')
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let l:missing_names = filter(
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\ copy(l:names),
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\ 'index(l:names_with_details, v:val) < 0',
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\)
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for l:name in l:missing_names
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call add(l:results, {
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\ 'word': l:name,
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\ 'kind': 'v',
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\ 'icase': 1,
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\ 'menu': '',
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\ 'info': '',
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\})
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endfor
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endif
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return l:results
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endfunction
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function! ale#completion#NullFilter(buffer, item) abort
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return 1
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endfunction
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function! ale#completion#ParseLSPCompletions(response) abort
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let l:buffer = bufnr('')
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let l:info = get(b:, 'ale_completion_info', {})
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let l:Filter = get(l:info, 'completion_filter', v:null)
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if l:Filter is v:null
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let l:Filter = function('ale#completion#NullFilter')
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else
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let l:Filter = ale#util#GetFunction(l:Filter)
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endif
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let l:item_list = []
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if type(get(a:response, 'result')) is v:t_list
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let l:item_list = a:response.result
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elseif type(get(a:response, 'result')) is v:t_dict
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\&& type(get(a:response.result, 'items')) is v:t_list
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let l:item_list = a:response.result.items
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endif
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let l:results = []
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for l:item in l:item_list
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if !call(l:Filter, [l:buffer, l:item])
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continue
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endif
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if get(l:item, 'insertTextFormat') is s:LSP_INSERT_TEXT_FORMAT_PLAIN
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\&& type(get(l:item, 'textEdit')) is v:t_dict
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let l:text = l:item.textEdit.newText
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else
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let l:text = l:item.label
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endif
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let l:word = matchstr(l:text, '\v^[^(]+')
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if empty(l:word)
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continue
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endif
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" See :help complete-items for Vim completion kinds
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if !has_key(l:item, 'kind')
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let l:kind = 'v'
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elseif l:item.kind is s:LSP_COMPLETION_METHOD_KIND
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let l:kind = 'm'
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elseif l:item.kind is s:LSP_COMPLETION_CONSTRUCTOR_KIND
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let l:kind = 'm'
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elseif l:item.kind is s:LSP_COMPLETION_FUNCTION_KIND
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let l:kind = 'f'
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elseif l:item.kind is s:LSP_COMPLETION_CLASS_KIND
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let l:kind = 'f'
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elseif l:item.kind is s:LSP_COMPLETION_INTERFACE_KIND
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let l:kind = 'f'
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else
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let l:kind = 'v'
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endif
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let l:doc = get(l:item, 'documentation', '')
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if type(l:doc) is v:t_dict && has_key(l:doc, 'value')
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let l:doc = l:doc.value
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endif
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call add(l:results, {
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\ 'word': l:word,
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\ 'kind': l:kind,
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\ 'icase': 1,
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\ 'menu': get(l:item, 'detail', ''),
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\ 'info': (type(l:doc) is v:t_string ? l:doc : ''),
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\})
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endfor
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if has_key(l:info, 'prefix')
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let l:results = ale#completion#Filter(l:buffer, &filetype, l:results, l:info.prefix)
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endif
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return l:results[: g:ale_completion_max_suggestions - 1]
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endfunction
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function! ale#completion#HandleTSServerResponse(conn_id, response) abort
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if !s:CompletionStillValid(get(a:response, 'request_seq'))
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return
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endif
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if !has_key(a:response, 'body')
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return
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endif
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let l:buffer = bufnr('')
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let l:command = get(a:response, 'command', '')
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if l:command is# 'completions'
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let l:names = ale#completion#Filter(
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\ l:buffer,
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\ &filetype,
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\ ale#completion#ParseTSServerCompletions(a:response),
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\ b:ale_completion_info.prefix,
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\)[: g:ale_completion_max_suggestions - 1]
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" We need to remember some names for tsserver, as it doesn't send
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" details back for everything we send.
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call setbufvar(l:buffer, 'ale_tsserver_completion_names', l:names)
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if !empty(l:names)
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let b:ale_completion_info.request_id = ale#lsp#Send(
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\ b:ale_completion_info.conn_id,
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\ ale#lsp#tsserver_message#CompletionEntryDetails(
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\ l:buffer,
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\ b:ale_completion_info.line,
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\ b:ale_completion_info.column,
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\ l:names,
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\ ),
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\)
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endif
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elseif l:command is# 'completionEntryDetails'
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call ale#completion#Show(
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\ a:response,
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\ 'ale#completion#ParseTSServerCompletionEntryDetails',
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\)
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endif
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endfunction
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function! ale#completion#HandleLSPResponse(conn_id, response) abort
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if !s:CompletionStillValid(get(a:response, 'id'))
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return
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endif
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call ale#completion#Show(
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\ a:response,
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\ 'ale#completion#ParseLSPCompletions',
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\)
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endfunction
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function! s:OnReady(linter, lsp_details) abort
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let l:id = a:lsp_details.connection_id
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if !ale#lsp#HasCapability(l:id, 'completion')
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return
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endif
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let l:buffer = a:lsp_details.buffer
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" If we have sent a completion request already, don't send another.
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if b:ale_completion_info.request_id
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return
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endif
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let l:Callback = a:linter.lsp is# 'tsserver'
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\ ? function('ale#completion#HandleTSServerResponse')
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\ : function('ale#completion#HandleLSPResponse')
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call ale#lsp#RegisterCallback(l:id, l:Callback)
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if a:linter.lsp is# 'tsserver'
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let l:message = ale#lsp#tsserver_message#Completions(
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\ l:buffer,
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\ b:ale_completion_info.line,
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\ b:ale_completion_info.column,
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\ b:ale_completion_info.prefix,
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\)
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else
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" Send a message saying the buffer has changed first, otherwise
|
|
" completions won't know what text is nearby.
|
|
call ale#lsp#NotifyForChanges(l:id, l:buffer)
|
|
|
|
" For LSP completions, we need to clamp the column to the length of
|
|
" the line. python-language-server and perhaps others do not implement
|
|
" this correctly.
|
|
let l:message = ale#lsp#message#Completion(
|
|
\ l:buffer,
|
|
\ b:ale_completion_info.line,
|
|
\ min([
|
|
\ b:ale_completion_info.line_length,
|
|
\ b:ale_completion_info.column,
|
|
\ ]) + 1,
|
|
\ ale#completion#GetTriggerCharacter(&filetype, b:ale_completion_info.prefix),
|
|
\)
|
|
endif
|
|
|
|
let l:request_id = ale#lsp#Send(l:id, l:message)
|
|
|
|
if l:request_id
|
|
let b:ale_completion_info.conn_id = l:id
|
|
let b:ale_completion_info.request_id = l:request_id
|
|
|
|
if has_key(a:linter, 'completion_filter')
|
|
let b:ale_completion_info.completion_filter = a:linter.completion_filter
|
|
endif
|
|
endif
|
|
endfunction
|
|
|
|
" This function can be used to manually trigger autocomplete, even when
|
|
" g:ale_completion_enabled is set to false
|
|
function! ale#completion#GetCompletions(manual) abort
|
|
let [l:line, l:column] = getpos('.')[1:2]
|
|
|
|
let l:prefix = ale#completion#GetPrefix(&filetype, l:line, l:column)
|
|
|
|
if !a:manual && empty(l:prefix)
|
|
return
|
|
endif
|
|
|
|
let l:line_length = len(getline('.'))
|
|
|
|
let b:ale_completion_info = {
|
|
\ 'line': l:line,
|
|
\ 'line_length': l:line_length,
|
|
\ 'column': l:column,
|
|
\ 'prefix': l:prefix,
|
|
\ 'conn_id': 0,
|
|
\ 'request_id': 0,
|
|
\ 'manual': a:manual,
|
|
\}
|
|
|
|
let l:buffer = bufnr('')
|
|
let l:Callback = function('s:OnReady')
|
|
|
|
for l:linter in ale#linter#Get(&filetype)
|
|
if !empty(l:linter.lsp)
|
|
call ale#lsp_linter#StartLSP(l:buffer, l:linter, l:Callback)
|
|
endif
|
|
endfor
|
|
endfunction
|
|
|
|
function! s:TimerHandler(...) abort
|
|
if !g:ale_completion_enabled
|
|
return
|
|
endif
|
|
|
|
let s:timer_id = -1
|
|
|
|
let [l:line, l:column] = getpos('.')[1:2]
|
|
|
|
" When running the timer callback, we have to be sure that the cursor
|
|
" hasn't moved from where it was when we requested completions by typing.
|
|
if s:timer_pos == [l:line, l:column] && ale#util#Mode() is# 'i'
|
|
call ale#completion#GetCompletions(0)
|
|
endif
|
|
endfunction
|
|
|
|
" Stop any completion timer that is queued. This is useful for tests.
|
|
function! ale#completion#StopTimer() abort
|
|
if s:timer_id != -1
|
|
call timer_stop(s:timer_id)
|
|
endif
|
|
|
|
let s:timer_id = -1
|
|
endfunction
|
|
|
|
function! ale#completion#Queue() abort
|
|
if !g:ale_completion_enabled
|
|
return
|
|
endif
|
|
|
|
let s:timer_pos = getpos('.')[1:2]
|
|
|
|
if s:timer_pos == s:last_done_pos
|
|
" Do not ask for completions if the cursor rests on the position we
|
|
" last completed on.
|
|
return
|
|
endif
|
|
|
|
" If we changed the text again while we're still waiting for a response,
|
|
" then invalidate the requests before the timer ticks again.
|
|
if exists('b:ale_completion_info')
|
|
let b:ale_completion_info.request_id = 0
|
|
endif
|
|
|
|
call ale#completion#StopTimer()
|
|
|
|
let s:timer_id = timer_start(g:ale_completion_delay, function('s:TimerHandler'))
|
|
endfunction
|
|
|
|
function! ale#completion#Done() abort
|
|
silent! pclose
|
|
|
|
call ale#completion#RestoreCompletionOptions()
|
|
|
|
let s:last_done_pos = getpos('.')[1:2]
|
|
endfunction
|
|
|
|
function! s:Setup(enabled) abort
|
|
augroup ALECompletionGroup
|
|
autocmd!
|
|
|
|
if a:enabled
|
|
autocmd TextChangedI * call ale#completion#Queue()
|
|
autocmd CompleteDone * call ale#completion#Done()
|
|
endif
|
|
augroup END
|
|
|
|
if !a:enabled
|
|
augroup! ALECompletionGroup
|
|
endif
|
|
endfunction
|
|
|
|
function! ale#completion#Enable() abort
|
|
let g:ale_completion_enabled = 1
|
|
call s:Setup(1)
|
|
endfunction
|
|
|
|
function! ale#completion#Disable() abort
|
|
let g:ale_completion_enabled = 0
|
|
call s:Setup(0)
|
|
endfunction
|