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" Author: w0rp <devw0rp@gmail.com>
" Description: Go to definition support for LSP linters.
let s:go_to_definition_map = {}
" Enable automatic updates of the tagstack
let g:ale_update_tagstack = get(g:, 'ale_update_tagstack', 1)
let g:ale_default_navigation = get(g:, 'ale_default_navigation', 'buffer')
" Used to get the definition map in tests.
function! ale#definition#GetMap() abort
return deepcopy(s:go_to_definition_map)
endfunction
" Used to set the definition map in tests.
function! ale#definition#SetMap(map) abort
let s:go_to_definition_map = a:map
endfunction
function! ale#definition#ClearLSPData() abort
let s:go_to_definition_map = {}
endfunction
function! ale#definition#UpdateTagStack() abort
let l:should_update_tagstack = exists('*gettagstack') && exists('*settagstack') && g:ale_update_tagstack
if l:should_update_tagstack
" Grab the old location (to jump back to) and the word under the
" cursor (as a label for the tagstack)
let l:old_location = [bufnr('%'), line('.'), col('.'), 0]
let l:tagname = expand('<cword>')
let l:winid = win_getid()
call settagstack(l:winid, {'items': [{'from': l:old_location, 'tagname': l:tagname}]}, 'a')
call settagstack(l:winid, {'curidx': len(gettagstack(l:winid)['items']) + 1})
endif
endfunction
function! ale#definition#HandleTSServerResponse(conn_id, response) abort
if has_key(a:response, 'request_seq')
\&& has_key(s:go_to_definition_map, a:response.request_seq)
let l:options = remove(s:go_to_definition_map, a:response.request_seq)
if get(a:response, 'success', v:false) is v:true && !empty(a:response.body)
let l:filename = a:response.body[0].file
let l:line = a:response.body[0].start.line
let l:column = a:response.body[0].start.offset
call ale#definition#UpdateTagStack()
call ale#util#Open(l:filename, l:line, l:column, l:options)
endif
endif
endfunction
function! ale#definition#HandleLSPResponse(conn_id, response) abort
if has_key(a:response, 'id')
\&& has_key(s:go_to_definition_map, a:response.id)
let l:options = remove(s:go_to_definition_map, a:response.id)
" The result can be a Dictionary item, a List of the same, or null.
let l:result = get(a:response, 'result', v:null)
if type(l:result) is v:t_dict
let l:result = [l:result]
elseif type(l:result) isnot v:t_list
let l:result = []
endif
for l:item in l:result
if has_key(l:item, 'targetUri')
" LocationLink items use targetUri
let l:uri = l:item.targetUri
let l:line = l:item.targetRange.start.line + 1
let l:column = l:item.targetRange.start.character + 1
else
" LocationLink items use uri
let l:uri = l:item.uri
let l:line = l:item.range.start.line + 1
let l:column = l:item.range.start.character + 1
endif
call ale#definition#UpdateTagStack()
let l:uri_handler = ale#uri#GetURIHandler(l:uri)
if l:uri_handler is# v:null
let l:filename = ale#path#FromFileURI(l:uri)
call ale#util#Open(l:filename, l:line, l:column, l:options)
else
call l:uri_handler.OpenURILink(l:uri, l:line, l:column, l:options, a:conn_id)
endif
break
endfor
endif
endfunction
function! s:OnReady(line, column, options, capability, linter, lsp_details) abort
let l:id = a:lsp_details.connection_id
if !ale#lsp#HasCapability(l:id, a:capability)
return
endif
let l:buffer = a:lsp_details.buffer
let l:Callback = a:linter.lsp is# 'tsserver'
\ ? function('ale#definition#HandleTSServerResponse')
\ : function('ale#definition#HandleLSPResponse')
call ale#lsp#RegisterCallback(l:id, l:Callback)
if a:linter.lsp is# 'tsserver'
if a:capability is# 'definition'
let l:message = ale#lsp#tsserver_message#Definition(
\ l:buffer,
\ a:line,
\ a:column
\)
elseif a:capability is# 'typeDefinition'
let l:message = ale#lsp#tsserver_message#TypeDefinition(
\ l:buffer,
\ a:line,
\ a:column
\)
elseif a:capability is# 'implementation'
let l:message = ale#lsp#tsserver_message#Implementation(
\ l:buffer,
\ a:line,
\ a:column
\)
endif
else
" Send a message saying the buffer has changed first, or the
" definition position probably won't make sense.
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.
if a:capability is# 'definition'
let l:message = ale#lsp#message#Definition(l:buffer, a:line, a:column)
elseif a:capability is# 'typeDefinition'
let l:message = ale#lsp#message#TypeDefinition(l:buffer, a:line, a:column)
elseif a:capability is# 'implementation'
let l:message = ale#lsp#message#Implementation(l:buffer, a:line, a:column)
else
" XXX: log here?
return
endif
endif
let l:request_id = ale#lsp#Send(l:id, l:message)
let s:go_to_definition_map[l:request_id] = {
\ 'open_in': get(a:options, 'open_in', 'current-buffer'),
\}
endfunction
function! s:GoToLSPDefinition(linter, options, capability) abort
let l:buffer = bufnr('')
let [l:line, l:column] = getpos('.')[1:2]
let l:column = min([l:column, len(getline(l:line))])
let l:Callback = function(
\ 's:OnReady',
\ [l:line, l:column, a:options, a:capability]
\)
call ale#lsp_linter#StartLSP(l:buffer, a:linter, l:Callback)
endfunction
function! ale#definition#GoTo(options) abort
for l:linter in ale#linter#Get(&filetype)
if !empty(l:linter.lsp)
call s:GoToLSPDefinition(l:linter, a:options, 'definition')
endif
endfor
endfunction
function! ale#definition#GoToType(options) abort
for l:linter in ale#linter#Get(&filetype)
if !empty(l:linter.lsp)
call s:GoToLSPDefinition(l:linter, a:options, 'typeDefinition')
endif
endfor
endfunction
function! ale#definition#GoToImpl(options) abort
for l:linter in ale#linter#Get(&filetype)
if !empty(l:linter.lsp)
call s:GoToLSPDefinition(l:linter, a:options, 'implementation')
endif
endfor
endfunction
function! ale#definition#GoToCommandHandler(command, ...) abort
let l:options = {}
if len(a:000) > 0
for l:option in a:000
if l:option is? '-tab'
let l:options.open_in = 'tab'
elseif l:option is? '-split'
let l:options.open_in = 'split'
elseif l:option is? '-vsplit'
let l:options.open_in = 'vsplit'
endif
endfor
endif
if !has_key(l:options, 'open_in')
let l:default_navigation = ale#Var(bufnr(''), 'default_navigation')
if index(['tab', 'split', 'vsplit'], l:default_navigation) >= 0
let l:options.open_in = l:default_navigation
endif
endif
if a:command is# 'type'
call ale#definition#GoToType(l:options)
elseif a:command is# 'implementation'
call ale#definition#GoToImpl(l:options)
else
call ale#definition#GoTo(l:options)
endif
endfunction
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