383 lines
11 KiB
VimL
383 lines
11 KiB
VimL
" Author: Jerko Steiner <jerko.steiner@gmail.com>
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" Description: Code action support for LSP / tsserver
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function! ale#code_action#ReloadBuffer() abort
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let l:buffer = bufnr('')
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execute 'augroup ALECodeActionReloadGroup' . l:buffer
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autocmd!
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augroup END
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silent! execute 'augroup! ALECodeActionReloadGroup' . l:buffer
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call ale#util#Execute(':e!')
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endfunction
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function! ale#code_action#HandleCodeAction(code_action, options) abort
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let l:current_buffer = bufnr('')
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let l:changes = a:code_action.changes
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let l:should_save = get(a:options, 'should_save')
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for l:file_code_edit in l:changes
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call ale#code_action#ApplyChanges(
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\ l:file_code_edit.fileName,
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\ l:file_code_edit.textChanges,
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\ l:should_save,
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\)
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endfor
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endfunction
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function! s:ChangeCmp(left, right) abort
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if a:left.start.line < a:right.start.line
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return -1
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endif
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if a:left.start.line > a:right.start.line
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return 1
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endif
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if a:left.start.offset < a:right.start.offset
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return -1
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endif
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if a:left.start.offset > a:right.start.offset
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return 1
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endif
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if a:left.end.line < a:right.end.line
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return -1
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endif
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if a:left.end.line > a:right.end.line
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return 1
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endif
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if a:left.end.offset < a:right.end.offset
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return -1
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endif
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if a:left.end.offset > a:right.end.offset
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return 1
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endif
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return 0
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endfunction
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function! ale#code_action#ApplyChanges(filename, changes, should_save) abort
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let l:current_buffer = bufnr('')
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" The buffer is used to determine the fileformat, if available.
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let l:buffer = bufnr(a:filename)
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let l:is_current_buffer = l:buffer > 0 && l:buffer == l:current_buffer
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if l:buffer > 0
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let l:lines = getbufline(l:buffer, 1, '$')
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else
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let l:lines = readfile(a:filename, 'b')
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endif
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if l:is_current_buffer
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let l:pos = getpos('.')[1:2]
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else
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let l:pos = [1, 1]
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endif
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" Changes have to be sorted so we apply them from bottom-to-top
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for l:code_edit in reverse(sort(copy(a:changes), function('s:ChangeCmp')))
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let l:line = l:code_edit.start.line
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let l:column = l:code_edit.start.offset
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let l:end_line = l:code_edit.end.line
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let l:end_column = l:code_edit.end.offset
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let l:text = l:code_edit.newText
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" Adjust the ends according to previous edits.
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if l:end_line > len(l:lines)
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let l:end_line_len = 0
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else
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let l:end_line_len = len(l:lines[l:end_line - 1])
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endif
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let l:insertions = split(l:text, '\n', 1)
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if l:line is 1
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" Same logic as for column below. Vimscript's slice [:-1] will not
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" be an empty list.
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let l:start = []
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else
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let l:start = l:lines[: l:line - 2]
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endif
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" Special case when text must be added after new line
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if l:column > len(l:lines[l:line - 1])
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call extend(l:start, [l:lines[l:line - 1]])
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let l:column = 1
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endif
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if l:column is 1
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" We need to handle column 1 specially, because we can't slice an
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" empty string ending on index 0.
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let l:middle = [l:insertions[0]]
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else
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let l:middle = [l:lines[l:line - 1][: l:column - 2] . l:insertions[0]]
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endif
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call extend(l:middle, l:insertions[1:])
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if l:end_line <= len(l:lines)
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" Only extend the last line if end_line is within the range of
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" lines.
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let l:middle[-1] .= l:lines[l:end_line - 1][l:end_column - 1 :]
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endif
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let l:lines_before_change = len(l:lines)
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let l:lines = l:start + l:middle + l:lines[l:end_line :]
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let l:current_line_offset = len(l:lines) - l:lines_before_change
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let l:column_offset = len(l:middle[-1]) - l:end_line_len
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let l:pos = s:UpdateCursor(l:pos,
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\ [l:line, l:column],
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\ [l:end_line, l:end_column],
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\ [l:current_line_offset, l:column_offset])
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endfor
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if l:lines[-1] is# ''
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call remove(l:lines, -1)
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endif
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if a:should_save
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call ale#util#Writefile(l:buffer, l:lines, a:filename)
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else
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call ale#util#SetBufferContents(l:buffer, l:lines)
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endif
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if l:is_current_buffer
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if a:should_save
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call ale#util#Execute(':e!')
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endif
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call setpos('.', [0, l:pos[0], l:pos[1], 0])
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endif
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if a:should_save && l:buffer > 0 && !l:is_current_buffer
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" Set up a one-time use event that will delete itself to reload the
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" buffer next time it's entered to view the changes made to it.
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execute 'augroup ALECodeActionReloadGroup' . l:buffer
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autocmd!
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execute printf(
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\ 'autocmd BufEnter <buffer=%d>'
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\ . ' call ale#code_action#ReloadBuffer()',
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\ l:buffer
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\)
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augroup END
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endif
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endfunction
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function! s:UpdateCursor(cursor, start, end, offset) abort
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let l:cur_line = a:cursor[0]
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let l:cur_column = a:cursor[1]
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let l:line = a:start[0]
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let l:column = a:start[1]
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let l:end_line = a:end[0]
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let l:end_column = a:end[1]
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let l:line_offset = a:offset[0]
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let l:column_offset = a:offset[1]
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if l:end_line < l:cur_line
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" both start and end lines are before the cursor. only line offset
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" needs to be updated
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let l:cur_line += l:line_offset
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elseif l:end_line == l:cur_line
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" end line is at the same location as cursor, which means
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" l:line <= l:cur_line
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if l:line < l:cur_line || l:column <= l:cur_column
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" updates are happening either before or around the cursor
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if l:end_column < l:cur_column
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" updates are happening before the cursor, update the
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" column offset for cursor
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let l:cur_line += l:line_offset
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let l:cur_column += l:column_offset
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else
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" updates are happening around the cursor, move the cursor
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" to the end of the changes
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let l:cur_line += l:line_offset
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let l:cur_column = l:end_column + l:column_offset
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endif
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" else is not necessary, it means modifications are happening
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" after the cursor so no cursor updates need to be done
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endif
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else
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" end line is after the cursor
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if l:line < l:cur_line || l:line == l:cur_line && l:column <= l:cur_column
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" changes are happening around the cursor, move the cursor
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" to the end of the changes
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let l:cur_line = l:end_line + l:line_offset
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let l:cur_column = l:end_column + l:column_offset
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" else is not necesary, it means modifications are happening
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" after the cursor so no cursor updates need to be done
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endif
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endif
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return [l:cur_line, l:cur_column]
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endfunction
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function! ale#code_action#GetChanges(workspace_edit) abort
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let l:changes = {}
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if has_key(a:workspace_edit, 'changes') && !empty(a:workspace_edit.changes)
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return a:workspace_edit.changes
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elseif has_key(a:workspace_edit, 'documentChanges')
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let l:document_changes = []
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if type(a:workspace_edit.documentChanges) is v:t_dict
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\ && has_key(a:workspace_edit.documentChanges, 'edits')
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call add(l:document_changes, a:workspace_edit.documentChanges)
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elseif type(a:workspace_edit.documentChanges) is v:t_list
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let l:document_changes = a:workspace_edit.documentChanges
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endif
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for l:text_document_edit in l:document_changes
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let l:filename = l:text_document_edit.textDocument.uri
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let l:edits = l:text_document_edit.edits
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let l:changes[l:filename] = l:edits
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endfor
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endif
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return l:changes
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endfunction
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function! ale#code_action#BuildChangesList(changes_map) abort
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let l:changes = []
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for l:file_name in keys(a:changes_map)
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let l:text_edits = a:changes_map[l:file_name]
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let l:text_changes = []
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for l:edit in l:text_edits
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let l:range = l:edit.range
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let l:new_text = l:edit.newText
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call add(l:text_changes, {
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\ 'start': {
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\ 'line': l:range.start.line + 1,
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\ 'offset': l:range.start.character + 1,
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\ },
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\ 'end': {
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\ 'line': l:range.end.line + 1,
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\ 'offset': l:range.end.character + 1,
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\ },
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\ 'newText': l:new_text,
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\})
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endfor
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call add(l:changes, {
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\ 'fileName': ale#path#FromURI(l:file_name),
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\ 'textChanges': l:text_changes,
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\})
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endfor
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return l:changes
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endfunction
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function! s:EscapeMenuName(text) abort
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return substitute(a:text, '\\\| \|\.\|&', '\\\0', 'g')
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endfunction
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function! s:UpdateMenu(data, menu_items) abort
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silent! aunmenu PopUp.Refactor\.\.\.
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if empty(a:data)
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return
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endif
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for [l:type, l:item] in a:menu_items
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let l:name = l:type is# 'tsserver' ? l:item.name : l:item.title
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let l:func_name = l:type is# 'tsserver'
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\ ? 'ale#codefix#ApplyTSServerCodeAction'
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\ : 'ale#codefix#ApplyLSPCodeAction'
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execute printf(
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\ 'anoremenu <silent> PopUp.&Refactor\.\.\..%s'
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\ . ' :call %s(%s, %s)<CR>',
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\ s:EscapeMenuName(l:name),
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\ l:func_name,
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\ string(a:data),
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\ string(l:item),
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\)
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endfor
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if empty(a:menu_items)
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silent! anoremenu PopUp.Refactor\.\.\..(None) :silent
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endif
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endfunction
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function! s:GetCodeActions(linter, options) abort
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let l:buffer = bufnr('')
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let [l:line, l:column] = getpos('.')[1:2]
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let l:column = min([l:column, len(getline(l:line))])
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let l:location = {
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\ 'buffer': l:buffer,
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\ 'line': l:line,
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\ 'column': l:column,
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\ 'end_line': l:line,
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\ 'end_column': l:column,
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\}
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let l:Callback = function('s:OnReady', [l:location, a:options])
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call ale#lsp_linter#StartLSP(l:buffer, a:linter, l:Callback)
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endfunction
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function! ale#code_action#GetCodeActions(options) abort
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silent! aunmenu PopUp.Rename
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silent! aunmenu PopUp.Refactor\.\.\.
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" Only display the menu items if there's an LSP server.
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let l:has_lsp = 0
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for l:linter in ale#linter#Get(&filetype)
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if !empty(l:linter.lsp)
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let l:has_lsp = 1
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break
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endif
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endfor
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if l:has_lsp
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if !empty(expand('<cword>'))
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silent! anoremenu <silent> PopUp.Rename :ALERename<CR>
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endif
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silent! anoremenu <silent> PopUp.Refactor\.\.\..(None) :silent<CR>
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call ale#codefix#Execute(
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\ mode() is# 'v' || mode() is# "\<C-V>",
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\ function('s:UpdateMenu')
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\)
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endif
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endfunction
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function! s:Setup(enabled) abort
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augroup ALECodeActionsGroup
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autocmd!
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if a:enabled
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autocmd MenuPopup * :call ale#code_action#GetCodeActions({})
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endif
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augroup END
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if !a:enabled
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silent! augroup! ALECodeActionsGroup
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silent! aunmenu PopUp.Rename
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silent! aunmenu PopUp.Refactor\.\.\.
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endif
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endfunction
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function! ale#code_action#EnablePopUpMenu() abort
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call s:Setup(1)
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endfunction
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function! ale#code_action#DisablePopUpMenu() abort
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call s:Setup(0)
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endfunction
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