Files
neovim/runtime/lua/vim/lsp/util.lua
skewb1k 40aef0d02e fix(lsp): decode 'null' in server responses as vim.NIL #34849
Problem:
Previously, 'null' value in LSP responses were decoded as 'nil'.
This caused ambiguity for fields typed as '? | null' and led to
loss of explicit 'null' values, particularly in 'data' parameters.

Solution:
Decode all JSON 'null' values as 'vim.NIL' and adjust handling
where needed. This better aligns with the LSP specification,
where 'null' and absent fields are distinct, and 'null' should
not be used to represent missing values.

This also enables proper validation of response messages to
ensure that exactly one of 'result' or 'error' is present, as
required by the JSON-RPC specification.
2025-08-03 07:42:44 -07:00

2387 lines
79 KiB
Lua

local protocol = require('vim.lsp.protocol')
local validate = vim.validate
local api = vim.api
local list_extend = vim.list_extend
local uv = vim.uv
local M = {}
--- @param border string|(string|[string,string])[]
local function border_error(border)
error(
string.format(
'invalid floating preview border: %s. :help vim.api.nvim_open_win()',
vim.inspect(border)
),
2
)
end
local border_size = {
none = { 0, 0 },
single = { 2, 2 },
double = { 2, 2 },
rounded = { 2, 2 },
solid = { 2, 2 },
shadow = { 1, 1 },
bold = { 2, 2 },
}
--- Check the border given by opts or the default border for the additional
--- size it adds to a float.
--- @param opts? {border:string|(string|[string,string])[]}
--- @return integer height
--- @return integer width
local function get_border_size(opts)
local border = opts and opts.border or vim.o.winborder
if border == '' then
border = 'none'
end
-- Convert winborder string option with custom characters into a table
if type(border) == 'string' and border:find(',') then
border = vim.split(border, ',')
end
if type(border) == 'string' then
if not border_size[border] then
border_error(border)
end
local r = border_size[border]
return r[1], r[2]
end
if 8 % #border ~= 0 then
border_error(border)
end
--- @param id integer
--- @return string
local function elem(id)
id = (id - 1) % #border + 1
local e = border[id]
if type(e) == 'table' then
-- border specified as a table of <character, highlight group>
return e[1]
elseif type(e) == 'string' then
-- border specified as a list of border characters
return e
end
--- @diagnostic disable-next-line:missing-return
border_error(border)
end
--- @param e string
--- @return integer
local function border_height(e)
return #e > 0 and 1 or 0
end
local top, bottom = elem(2), elem(6)
local height = border_height(top) + border_height(bottom)
local right, left = elem(4), elem(8)
local width = vim.fn.strdisplaywidth(right) + vim.fn.strdisplaywidth(left)
return height, width
end
--- Splits string at newlines, optionally removing unwanted blank lines.
---
--- @param s string Multiline string
--- @param no_blank boolean? Drop blank lines for each @param/@return (except one empty line
--- separating each). Workaround for https://github.com/LuaLS/lua-language-server/issues/2333
local function split_lines(s, no_blank)
s = string.gsub(s, '\r\n?', '\n')
local lines = {}
local in_desc = true -- Main description block, before seeing any @foo.
for line in vim.gsplit(s, '\n', { plain = true, trimempty = true }) do
local start_annotation = not not line:find('^ ?%@.?[pr]')
in_desc = (not start_annotation) and in_desc or false
if start_annotation and no_blank and not (lines[#lines] or ''):find('^%s*$') then
table.insert(lines, '') -- Separate each @foo with a blank line.
end
if in_desc or not no_blank or not line:find('^%s*$') then
table.insert(lines, line)
end
end
return lines
end
local function create_window_without_focus()
local prev = api.nvim_get_current_win()
vim.cmd.new()
local new = api.nvim_get_current_win()
api.nvim_set_current_win(prev)
return new
end
--- Replaces text in a range with new text.
---
--- CAUTION: Changes in-place!
---
---@deprecated
---@param lines string[] Original list of strings
---@param A [integer, integer] Start position; a 2-tuple of {line,col} numbers
---@param B [integer, integer] End position; a 2-tuple {line,col} numbers
---@param new_lines string[] list of strings to replace the original
---@return string[] The modified {lines} object
function M.set_lines(lines, A, B, new_lines)
vim.deprecate('vim.lsp.util.set_lines()', 'nil', '0.12')
-- 0-indexing to 1-indexing
local i_0 = A[1] + 1
-- If it extends past the end, truncate it to the end. This is because the
-- way the LSP describes the range including the last newline is by
-- specifying a line number after what we would call the last line.
local i_n = math.min(B[1] + 1, #lines)
if not (i_0 >= 1 and i_0 <= #lines + 1 and i_n >= 1 and i_n <= #lines) then
error('Invalid range: ' .. vim.inspect({ A = A, B = B, #lines, new_lines }))
end
local prefix = ''
local suffix = assert(lines[i_n]):sub(B[2] + 1)
if A[2] > 0 then
prefix = assert(lines[i_0]):sub(1, A[2])
end
local n = i_n - i_0 + 1
if n ~= #new_lines then
for _ = 1, n - #new_lines do
table.remove(lines, i_0)
end
for _ = 1, #new_lines - n do
table.insert(lines, i_0, '')
end
end
for i = 1, #new_lines do
lines[i - 1 + i_0] = new_lines[i]
end
if #suffix > 0 then
local i = i_0 + #new_lines - 1
lines[i] = lines[i] .. suffix
end
if #prefix > 0 then
lines[i_0] = prefix .. lines[i_0]
end
return lines
end
--- @param fn fun(x:any):any[]
--- @return function
local function sort_by_key(fn)
return function(a, b)
local ka, kb = fn(a), fn(b)
assert(#ka == #kb)
for i = 1, #ka do
if ka[i] ~= kb[i] then
return ka[i] < kb[i]
end
end
-- every value must have been equal here, which means it's not less than.
return false
end
end
--- Gets the zero-indexed lines from the given buffer.
--- Works on unloaded buffers by reading the file using libuv to bypass buf reading events.
--- Falls back to loading the buffer and nvim_buf_get_lines for buffers with non-file URI.
---
---@param bufnr integer bufnr to get the lines from
---@param rows integer[] zero-indexed line numbers
---@return table<integer, string> # a table mapping rows to lines
local function get_lines(bufnr, rows)
--- @type integer[]
rows = type(rows) == 'table' and rows or { rows }
-- This is needed for bufload and bufloaded
bufnr = vim._resolve_bufnr(bufnr)
local function buf_lines()
local lines = {} --- @type table<integer,string>
for _, row in ipairs(rows) do
lines[row] = (api.nvim_buf_get_lines(bufnr, row, row + 1, false) or { '' })[1]
end
return lines
end
-- use loaded buffers if available
if vim.fn.bufloaded(bufnr) == 1 then
return buf_lines()
end
local uri = vim.uri_from_bufnr(bufnr)
-- load the buffer if this is not a file uri
-- Custom language server protocol extensions can result in servers sending URIs with custom schemes. Plugins are able to load these via `BufReadCmd` autocmds.
if uri:sub(1, 4) ~= 'file' then
vim.fn.bufload(bufnr)
return buf_lines()
end
local filename = api.nvim_buf_get_name(bufnr)
if vim.fn.isdirectory(filename) ~= 0 then
return {}
end
-- get the data from the file
local fd = uv.fs_open(filename, 'r', 438)
if not fd then
return {}
end
local stat = assert(uv.fs_fstat(fd))
local data = assert(uv.fs_read(fd, stat.size, 0))
uv.fs_close(fd)
local lines = {} --- @type table<integer,true|string> rows we need to retrieve
local need = 0 -- keep track of how many unique rows we need
for _, row in pairs(rows) do
if not lines[row] then
need = need + 1
end
lines[row] = true
end
local found = 0
local lnum = 0
for line in string.gmatch(data, '([^\n]*)\n?') do
if lines[lnum] == true then
lines[lnum] = line
found = found + 1
if found == need then
break
end
end
lnum = lnum + 1
end
-- change any lines we didn't find to the empty string
for i, line in pairs(lines) do
if line == true then
lines[i] = ''
end
end
return lines --[[@as table<integer,string>]]
end
--- Gets the zero-indexed line from the given buffer.
--- Works on unloaded buffers by reading the file using libuv to bypass buf reading events.
--- Falls back to loading the buffer and nvim_buf_get_lines for buffers with non-file URI.
---
---@param bufnr integer
---@param row integer zero-indexed line number
---@return string the line at row in filename
local function get_line(bufnr, row)
return get_lines(bufnr, { row })[row]
end
--- Position is a https://microsoft.github.io/language-server-protocol/specifications/specification-current/#position
---@param position lsp.Position
---@param position_encoding 'utf-8'|'utf-16'|'utf-32'
---@return integer
local function get_line_byte_from_position(bufnr, position, position_encoding)
-- LSP's line and characters are 0-indexed
-- Vim's line and columns are 1-indexed
local col = position.character
-- When on the first character, we can ignore the difference between byte and
-- character
if col > 0 then
local line = get_line(bufnr, position.line) or ''
return vim.str_byteindex(line, position_encoding, col, false)
end
return col
end
--- Applies a list of text edits to a buffer.
---@param text_edits (lsp.TextEdit|lsp.AnnotatedTextEdit)[]
---@param bufnr integer Buffer id
---@param position_encoding 'utf-8'|'utf-16'|'utf-32'
---@param change_annotations? table<string, lsp.ChangeAnnotation>
---@see https://microsoft.github.io/language-server-protocol/specifications/specification-current/#textEdit
function M.apply_text_edits(text_edits, bufnr, position_encoding, change_annotations)
validate('text_edits', text_edits, 'table', false)
validate('bufnr', bufnr, 'number', false)
validate('position_encoding', position_encoding, 'string', false)
validate('change_annotations', change_annotations, 'table', true)
if not next(text_edits) then
return
end
assert(bufnr ~= 0, 'Explicit buffer number is required')
if not api.nvim_buf_is_loaded(bufnr) then
vim.fn.bufload(bufnr)
end
vim.bo[bufnr].buflisted = true
local marks = {} --- @type table<string,[integer,integer]>
local has_eol_text_edit = false
local function apply_text_edits()
-- Fix reversed range and indexing each text_edits
for index, text_edit in ipairs(text_edits) do
--- @cast text_edit lsp.TextEdit|{_index: integer}
text_edit._index = index
if
text_edit.range.start.line > text_edit.range['end'].line
or text_edit.range.start.line == text_edit.range['end'].line
and text_edit.range.start.character > text_edit.range['end'].character
then
local start = text_edit.range.start
text_edit.range.start = text_edit.range['end']
text_edit.range['end'] = start
end
end
--- @cast text_edits (lsp.TextEdit|lsp.AnnotatedTextEdit|{_index: integer})[]
-- Sort text_edits
---@param a (lsp.TextEdit|lsp.AnnotatedTextEdit|{_index: integer})
---@param b (lsp.TextEdit|lsp.AnnotatedTextEdit|{_index: integer})
---@return boolean
table.sort(text_edits, function(a, b)
if a.range.start.line ~= b.range.start.line then
return a.range.start.line > b.range.start.line
end
if a.range.start.character ~= b.range.start.character then
return a.range.start.character > b.range.start.character
end
return a._index > b._index
end)
-- save and restore local marks since they get deleted by nvim_buf_set_lines
for _, m in pairs(vim.fn.getmarklist(bufnr)) do
if m.mark:match("^'[a-z]$") then
marks[m.mark:sub(2, 2)] = { m.pos[2], m.pos[3] - 1 } -- api-indexed
end
end
for _, text_edit in ipairs(text_edits) do
-- Normalize line ending
text_edit.newText, _ = string.gsub(text_edit.newText, '\r\n?', '\n')
-- Convert from LSP style ranges to Neovim style ranges.
local start_row = text_edit.range.start.line
local start_col = get_line_byte_from_position(bufnr, text_edit.range.start, position_encoding)
local end_row = text_edit.range['end'].line
local end_col = get_line_byte_from_position(bufnr, text_edit.range['end'], position_encoding)
local text = vim.split(text_edit.newText, '\n', { plain = true })
local max = api.nvim_buf_line_count(bufnr)
-- If the whole edit is after the lines in the buffer we can simply add the new text to the end
-- of the buffer.
if max <= start_row then
api.nvim_buf_set_lines(bufnr, max, max, false, text)
else
local last_line_len = #(get_line(bufnr, math.min(end_row, max - 1)) or '')
-- Some LSP servers may return +1 range of the buffer content but nvim_buf_set_text can't
-- accept it so we should fix it here.
if max <= end_row then
end_row = max - 1
end_col = last_line_len
has_eol_text_edit = true
else
-- If the replacement is over the end of a line (i.e. end_col is equal to the line length and the
-- replacement text ends with a newline We can likely assume that the replacement is assumed
-- to be meant to replace the newline with another newline and we need to make sure this
-- doesn't add an extra empty line. E.g. when the last line to be replaced contains a '\r'
-- in the file some servers (clangd on windows) will include that character in the line
-- while nvim_buf_set_text doesn't count it as part of the line.
if
end_col >= last_line_len
and text_edit.range['end'].character > end_col
and #text_edit.newText > 0
and string.sub(text_edit.newText, -1) == '\n'
then
table.remove(text, #text)
end
end
-- Make sure we don't go out of bounds for end_col
end_col = math.min(last_line_len, end_col)
api.nvim_buf_set_text(bufnr, start_row, start_col, end_row, end_col, text)
end
end
end
--- Track how many times each change annotation is applied to build up the final description.
---@type table<string, integer>
local change_count = {}
-- If there are any annotated text edits, we need to confirm them before applying the edits.
local confirmations = {} ---@type table<string, integer>
for _, text_edit in ipairs(text_edits) do
if text_edit.annotationId then
assert(
change_annotations ~= nil,
'change_annotations must be provided for annotated text edits'
)
local annotation = assert(
change_annotations[text_edit.annotationId],
string.format('No change annotation found for ID: %s', text_edit.annotationId)
)
if annotation.needsConfirmation then
confirmations[text_edit.annotationId] = (confirmations[text_edit.annotationId] or 0) + 1
end
change_count[text_edit.annotationId] = (change_count[text_edit.annotationId] or 0) + 1
end
end
if next(confirmations) then
local message = { 'Apply all changes?' }
for id, count in pairs(confirmations) do
local annotation = assert(change_annotations)[id]
message[#message + 1] = annotation.label
.. (annotation.description and (string.format(': %s', annotation.description)) or '')
.. (count > 1 and string.format(' (%d)', count) or '')
end
local response = vim.fn.confirm(table.concat(message, '\n'), '&Yes\n&No', 1, 'Question')
if response == 1 then
-- Proceed with applying text edits.
apply_text_edits()
else
-- Don't apply any text edits.
return
end
else
-- No confirmations needed, apply text edits directly.
apply_text_edits()
end
if change_annotations ~= nil and next(change_count) then
local change_message = { 'Applied changes:' }
for id, count in pairs(change_count) do
local annotation = change_annotations[id]
change_message[#change_message + 1] = annotation.label
.. (annotation.description and (': ' .. annotation.description) or '')
.. (count > 1 and string.format(' (%d)', count) or '')
end
vim.notify(table.concat(change_message, '\n'), vim.log.levels.INFO)
end
local max = api.nvim_buf_line_count(bufnr)
-- no need to restore marks that still exist
for _, m in pairs(vim.fn.getmarklist(bufnr)) do
marks[m.mark:sub(2, 2)] = nil
end
-- restore marks
for mark, pos in pairs(marks) do
if pos then
-- make sure we don't go out of bounds
pos[1] = math.min(pos[1], max)
pos[2] = math.min(pos[2], #(get_line(bufnr, pos[1] - 1) or ''))
api.nvim_buf_set_mark(bufnr or 0, mark, pos[1], pos[2], {})
end
end
-- Remove final line if needed
local fix_eol = has_eol_text_edit
fix_eol = fix_eol and (vim.bo[bufnr].eol or (vim.bo[bufnr].fixeol and not vim.bo[bufnr].binary))
fix_eol = fix_eol and get_line(bufnr, max - 1) == ''
if fix_eol then
api.nvim_buf_set_lines(bufnr, -2, -1, false, {})
end
end
--- Applies a `TextDocumentEdit`, which is a list of changes to a single
--- document.
---
---@param text_document_edit lsp.TextDocumentEdit
---@param index? integer: Optional index of the edit, if from a list of edits (or nil, if not from a list)
---@param position_encoding? 'utf-8'|'utf-16'|'utf-32'
---@param change_annotations? table<string, lsp.ChangeAnnotation>
---@see https://microsoft.github.io/language-server-protocol/specifications/specification-current/#textDocumentEdit
function M.apply_text_document_edit(
text_document_edit,
index,
position_encoding,
change_annotations
)
local text_document = text_document_edit.textDocument
local bufnr = vim.uri_to_bufnr(text_document.uri)
if position_encoding == nil then
vim.notify_once(
'apply_text_document_edit must be called with valid position encoding',
vim.log.levels.WARN
)
return
end
-- `VersionedTextDocumentIdentifier`s version may be null
-- https://microsoft.github.io/language-server-protocol/specification#versionedTextDocumentIdentifier
if
-- For lists of text document edits,
-- do not check the version after the first edit.
not (index and index > 1)
and (
text_document.version ~= vim.NIL
and text_document.version > 0
and M.buf_versions[bufnr] > text_document.version
)
then
print('Buffer ', text_document.uri, ' newer than edits.')
return
end
M.apply_text_edits(text_document_edit.edits, bufnr, position_encoding, change_annotations)
end
local function path_components(path)
return vim.split(path, '/', { plain = true })
end
--- @param path string[]
--- @param prefix string[]
--- @return boolean
local function path_under_prefix(path, prefix)
for i, c in ipairs(prefix) do
if c ~= path[i] then
return false
end
end
return true
end
--- Get list of loaded writable buffers whose filename matches the given path
--- prefix (normalized full path).
---@param prefix string
---@return integer[]
local function get_writable_bufs(prefix)
local prefix_parts = path_components(prefix)
local buffers = {} --- @type integer[]
for _, buf in ipairs(api.nvim_list_bufs()) do
-- No need to care about unloaded or nofile buffers. Also :saveas won't work for them.
if
api.nvim_buf_is_loaded(buf)
and not vim.list_contains({ 'nofile', 'nowrite' }, vim.bo[buf].buftype)
then
local bname = api.nvim_buf_get_name(buf)
local path = path_components(vim.fs.normalize(bname, { expand_env = false }))
if path_under_prefix(path, prefix_parts) then
buffers[#buffers + 1] = buf
end
end
end
return buffers
end
local function escape_gsub_repl(s)
return (s:gsub('%%', '%%%%'))
end
--- @class vim.lsp.util.rename.Opts
--- @inlinedoc
--- @field overwrite? boolean
--- @field ignoreIfExists? boolean
--- Rename old_fname to new_fname
---
--- Existing buffers are renamed as well, while maintaining their bufnr.
---
--- It deletes existing buffers that conflict with the renamed file name only when
--- * `opts` requests overwriting; or
--- * the conflicting buffers are not loaded, so that deleting them does not result in data loss.
---
--- @param old_fname string
--- @param new_fname string
--- @param opts? vim.lsp.util.rename.Opts Options:
function M.rename(old_fname, new_fname, opts)
opts = opts or {}
local skip = not opts.overwrite or opts.ignoreIfExists
local old_fname_full = vim.uv.fs_realpath(vim.fs.normalize(old_fname, { expand_env = false }))
if not old_fname_full then
vim.notify('Invalid path: ' .. old_fname, vim.log.levels.ERROR)
return
end
local target_exists = uv.fs_stat(new_fname) ~= nil
if target_exists and skip then
vim.notify(new_fname .. ' already exists. Skipping rename.', vim.log.levels.ERROR)
return
end
local buf_rename = {} ---@type table<integer, {from: string, to: string}>
local old_fname_pat = '^' .. vim.pesc(old_fname_full)
for _, b in ipairs(get_writable_bufs(old_fname_full)) do
-- Renaming a buffer may conflict with another buffer that happens to have the same name. In
-- most cases, this would have been already detected by the file conflict check above, but the
-- conflicting buffer may not be associated with a file. For example, 'buftype' can be "nofile"
-- or "nowrite", or the buffer can be a normal buffer but has not been written to the file yet.
-- Renaming should fail in such cases to avoid losing the contents of the conflicting buffer.
local old_bname = api.nvim_buf_get_name(b)
local new_bname = old_bname:gsub(old_fname_pat, escape_gsub_repl(new_fname))
if vim.fn.bufexists(new_bname) == 1 then
local existing_buf = vim.fn.bufnr(new_bname)
if api.nvim_buf_is_loaded(existing_buf) and skip then
vim.notify(
new_bname .. ' already exists in the buffer list. Skipping rename.',
vim.log.levels.ERROR
)
return
end
-- no need to preserve if such a buffer is empty
api.nvim_buf_delete(existing_buf, {})
end
buf_rename[b] = { from = old_bname, to = new_bname }
end
local newdir = vim.fs.dirname(new_fname)
vim.fn.mkdir(newdir, 'p')
local ok, err = os.rename(old_fname_full, new_fname)
assert(ok, err)
local old_undofile = vim.fn.undofile(old_fname_full)
if uv.fs_stat(old_undofile) ~= nil then
local new_undofile = vim.fn.undofile(new_fname)
vim.fn.mkdir(vim.fs.dirname(new_undofile), 'p')
os.rename(old_undofile, new_undofile)
end
for b, rename in pairs(buf_rename) do
-- Rename with :saveas. This does two things:
-- * Unset BF_WRITE_MASK, so that users don't get E13 when they do :write.
-- * Send didClose and didOpen via textDocument/didSave handler.
vim._with({ buf = b }, function()
vim.cmd('keepalt saveas! ' .. vim.fn.fnameescape(rename.to))
end)
-- Delete the new buffer with the old name created by :saveas. nvim_buf_delete and
-- :bwipeout are futile because the buffer will be added again somewhere else.
vim.cmd('bdelete! ' .. vim.fn.bufnr(rename.from))
end
end
--- @param change lsp.CreateFile
local function create_file(change)
local opts = change.options or {}
-- from spec: Overwrite wins over `ignoreIfExists`
local fname = vim.uri_to_fname(change.uri)
if not opts.ignoreIfExists or opts.overwrite then
vim.fn.mkdir(vim.fs.dirname(fname), 'p')
local file = io.open(fname, 'w')
if file then
file:close()
end
end
vim.fn.bufadd(fname)
end
--- @param change lsp.DeleteFile
local function delete_file(change)
local opts = change.options or {}
local fname = vim.uri_to_fname(change.uri)
local bufnr = vim.fn.bufadd(fname)
vim.fs.rm(fname, {
force = opts.ignoreIfNotExists,
recursive = opts.recursive,
})
api.nvim_buf_delete(bufnr, { force = true })
end
--- Applies a `WorkspaceEdit`.
---
---@param workspace_edit lsp.WorkspaceEdit
---@param position_encoding 'utf-8'|'utf-16'|'utf-32' (required)
---@see https://microsoft.github.io/language-server-protocol/specifications/specification-current/#workspace_applyEdit
function M.apply_workspace_edit(workspace_edit, position_encoding)
if position_encoding == nil then
vim.notify_once(
'apply_workspace_edit must be called with valid position encoding',
vim.log.levels.WARN
)
return
end
if workspace_edit.documentChanges then
for idx, change in ipairs(workspace_edit.documentChanges) do
if change.kind == 'rename' then
local options = change.options --[[@as vim.lsp.util.rename.Opts]]
M.rename(vim.uri_to_fname(change.oldUri), vim.uri_to_fname(change.newUri), options)
elseif change.kind == 'create' then
create_file(change)
elseif change.kind == 'delete' then
delete_file(change)
elseif change.kind then --- @diagnostic disable-line:undefined-field
error(string.format('Unsupported change: %q', vim.inspect(change)))
else
M.apply_text_document_edit(change, idx, position_encoding, workspace_edit.changeAnnotations)
end
end
return
end
local all_changes = workspace_edit.changes
if not (all_changes and not vim.tbl_isempty(all_changes)) then
return
end
for uri, changes in pairs(all_changes) do
local bufnr = vim.uri_to_bufnr(uri)
M.apply_text_edits(changes, bufnr, position_encoding, workspace_edit.changeAnnotations)
end
end
--- Converts any of `MarkedString` | `MarkedString[]` | `MarkupContent` into
--- a list of lines containing valid markdown. Useful to populate the hover
--- window for `textDocument/hover`, for parsing the result of
--- `textDocument/signatureHelp`, and potentially others.
---
--- Note that if the input is of type `MarkupContent` and its kind is `plaintext`,
--- then the corresponding value is returned without further modifications.
---
---@param input lsp.MarkedString|lsp.MarkedString[]|lsp.MarkupContent
---@param contents string[]? List of strings to extend with converted lines. Defaults to {}.
---@return string[] extended with lines of converted markdown.
---@see https://microsoft.github.io/language-server-protocol/specifications/specification-current/#textDocument_hover
function M.convert_input_to_markdown_lines(input, contents)
contents = contents or {}
-- MarkedString variation 1
if type(input) == 'string' then
list_extend(contents, split_lines(input, true))
else
assert(type(input) == 'table', 'Expected a table for LSP input')
-- MarkupContent
if input.kind then
local value = input.value or ''
list_extend(contents, split_lines(value, true))
-- MarkupString variation 2
elseif input.language then
table.insert(contents, '```' .. input.language)
list_extend(contents, split_lines(input.value or ''))
table.insert(contents, '```')
-- By deduction, this must be MarkedString[]
else
-- Use our existing logic to handle MarkedString
for _, marked_string in ipairs(input) do
M.convert_input_to_markdown_lines(marked_string, contents)
end
end
end
if (contents[1] == '' or contents[1] == nil) and #contents == 1 then
return {}
end
return contents
end
--- Returns the line/column-based position in `contents` at the given offset.
---
---@param offset integer
---@param contents string[]
---@return { [1]: integer, [2]: integer }?
local function get_pos_from_offset(offset, contents)
local i = 0
for l, line in ipairs(contents) do
if offset >= i and offset < i + #line then
return { l - 1, offset - i + 1 }
else
i = i + #line + 1
end
end
end
--- Converts `textDocument/signatureHelp` response to markdown lines.
---
---@param signature_help lsp.SignatureHelp Response of `textDocument/SignatureHelp`
---@param ft string? filetype that will be use as the `lang` for the label markdown code block
---@param triggers string[]? list of trigger characters from the lsp server. used to better determine parameter offsets
---@return string[]? # lines of converted markdown.
---@return Range4? # highlight range for the active parameter
---@see https://microsoft.github.io/language-server-protocol/specifications/specification-current/#textDocument_signatureHelp
function M.convert_signature_help_to_markdown_lines(signature_help, ft, triggers)
--The active signature. If omitted or the value lies outside the range of
--`signatures` the value defaults to zero or is ignored if `signatures.length == 0`.
--Whenever possible implementors should make an active decision about
--the active signature and shouldn't rely on a default value.
local contents = {} --- @type string[]
local active_offset ---@type [integer, integer]?
local active_signature = signature_help.activeSignature or 0
-- If the activeSignature is not inside the valid range, then clip it.
-- In 3.15 of the protocol, activeSignature was allowed to be negative
if active_signature >= #signature_help.signatures or active_signature < 0 then
active_signature = 0
end
local signature = vim.deepcopy(signature_help.signatures[active_signature + 1])
local label = signature.label
if ft then
-- wrap inside a code block for proper rendering
label = ('```%s\n%s\n```'):format(ft, label)
end
list_extend(contents, vim.split(label, '\n', { plain = true, trimempty = true }))
local doc = signature.documentation
if doc then
-- if LSP returns plain string, we treat it as plaintext. This avoids
-- special characters like underscore or similar from being interpreted
-- as markdown font modifiers
if type(doc) == 'string' then
signature.documentation = { kind = 'plaintext', value = doc }
end
M.convert_input_to_markdown_lines(signature.documentation, contents)
end
if signature.parameters and #signature.parameters > 0 then
-- First check if the signature has an activeParameter. If it doesn't check if the response
-- had that property instead. Else just default to 0.
--
-- NOTE: Using tonumber() as a temporary workaround to handle `vim.NIL` until #34838 is merged
local active_parameter = math.max(
tonumber(signature.activeParameter) or tonumber(signature_help.activeParameter) or 0,
0
)
-- If the activeParameter is > #parameters, then set it to the last
-- NOTE: this is not fully according to the spec, but a client-side interpretation
active_parameter = math.min(active_parameter, #signature.parameters - 1)
local parameter = signature.parameters[active_parameter + 1]
local parameter_label = parameter.label
if type(parameter_label) == 'table' then
active_offset = parameter_label
else
local offset = 1 ---@type integer?
-- try to set the initial offset to the first found trigger character
for _, t in ipairs(triggers or {}) do
local trigger_offset = signature.label:find(t, 1, true)
if trigger_offset and (offset == 1 or trigger_offset < offset) then
offset = trigger_offset
end
end
for p, param in pairs(signature.parameters) do
local plabel = param.label
assert(type(plabel) == 'string', 'Expected label to be a string')
offset = signature.label:find(plabel, offset, true)
if not offset then
break
end
if p == active_parameter + 1 then
active_offset = { offset - 1, offset + #parameter_label - 1 }
break
end
offset = offset + #param.label + 1
end
end
if parameter.documentation then
M.convert_input_to_markdown_lines(parameter.documentation, contents)
end
end
local active_hl = nil
if active_offset then
-- Account for the start of the markdown block.
if ft then
active_offset[1] = active_offset[1] + #contents[1]
active_offset[2] = active_offset[2] + #contents[1]
end
local a_start = get_pos_from_offset(active_offset[1], contents)
local a_end = get_pos_from_offset(active_offset[2], contents)
if a_start and a_end then
active_hl = { a_start[1], a_start[2], a_end[1], a_end[2] }
end
end
return contents, active_hl
end
--- Creates a table with sensible default options for a floating window. The
--- table can be passed to |nvim_open_win()|.
---
---@param width integer window width (in character cells)
---@param height integer window height (in character cells)
---@param opts? vim.lsp.util.open_floating_preview.Opts
---@return vim.api.keyset.win_config
function M.make_floating_popup_options(width, height, opts)
validate('opts', opts, 'table', true)
opts = opts or {}
validate('opts.offset_x', opts.offset_x, 'number', true)
validate('opts.offset_y', opts.offset_y, 'number', true)
local anchor = ''
local lines_above = opts.relative == 'mouse' and vim.fn.getmousepos().line - 1
or vim.fn.winline() - 1
local lines_below = vim.fn.winheight(0) - lines_above
local anchor_bias = opts.anchor_bias or 'auto'
local anchor_below --- @type boolean?
if anchor_bias == 'below' then
anchor_below = (lines_below > lines_above) or (height <= lines_below)
elseif anchor_bias == 'above' then
local anchor_above = (lines_above > lines_below) or (height <= lines_above)
anchor_below = not anchor_above
else
anchor_below = lines_below > lines_above
end
local border_height = get_border_size(opts)
local row, col --- @type integer?, integer?
if anchor_below then
anchor = anchor .. 'N'
height = math.max(math.min(lines_below - border_height, height), 0)
row = 1
else
anchor = anchor .. 'S'
height = math.max(math.min(lines_above - border_height, height), 0)
row = 0
end
local wincol = opts.relative == 'mouse' and vim.fn.getmousepos().column or vim.fn.wincol()
if wincol + width + (opts.offset_x or 0) <= vim.o.columns then
anchor = anchor .. 'W'
col = 0
else
anchor = anchor .. 'E'
col = 1
end
local title = (opts.border and opts.title) and opts.title or nil
local title_pos --- @type 'left'|'center'|'right'?
if title then
title_pos = opts.title_pos or 'center'
end
return {
anchor = anchor,
row = row + (opts.offset_y or 0),
col = col + (opts.offset_x or 0),
height = height,
focusable = opts.focusable,
relative = (opts.relative == 'mouse' or opts.relative == 'editor') and opts.relative
or 'cursor',
style = 'minimal',
width = width,
border = opts.border,
zindex = opts.zindex or (api.nvim_win_get_config(0).zindex or 49) + 1,
title = title,
title_pos = title_pos,
}
end
--- @class vim.lsp.util.show_document.Opts
--- @inlinedoc
---
--- Jump to existing window if buffer is already open.
--- @field reuse_win? boolean
---
--- Whether to focus/jump to location if possible.
--- (defaults: true)
--- @field focus? boolean
--- Shows document and optionally jumps to the location.
---
---@param location lsp.Location|lsp.LocationLink
---@param position_encoding 'utf-8'|'utf-16'|'utf-32'?
---@param opts? vim.lsp.util.show_document.Opts
---@return boolean `true` if succeeded
function M.show_document(location, position_encoding, opts)
-- location may be Location or LocationLink
local uri = location.uri or location.targetUri
if uri == nil then
return false
end
if position_encoding == nil then
vim.notify_once(
'show_document must be called with valid position encoding',
vim.log.levels.WARN
)
return false
end
local bufnr = vim.uri_to_bufnr(uri)
opts = opts or {}
local focus = vim.F.if_nil(opts.focus, true)
if focus then
-- Save position in jumplist
vim.cmd("normal! m'")
-- Push a new item into tagstack
local from = { vim.fn.bufnr('%'), vim.fn.line('.'), vim.fn.col('.'), 0 }
local items = { { tagname = vim.fn.expand('<cword>'), from = from } }
vim.fn.settagstack(vim.fn.win_getid(), { items = items }, 't')
end
local win = opts.reuse_win and vim.fn.win_findbuf(bufnr)[1]
or focus and api.nvim_get_current_win()
or create_window_without_focus()
vim.bo[bufnr].buflisted = true
api.nvim_win_set_buf(win, bufnr)
if focus then
api.nvim_set_current_win(win)
end
-- location may be Location or LocationLink
local range = location.range or location.targetSelectionRange
if range then
-- Jump to new location (adjusting for encoding of characters)
local row = range.start.line
local col = get_line_byte_from_position(bufnr, range.start, position_encoding)
api.nvim_win_set_cursor(win, { row + 1, col })
vim._with({ win = win }, function()
-- Open folds under the cursor
vim.cmd('normal! zv')
end)
end
return true
end
--- Jumps to a location.
---
---@deprecated use `vim.lsp.util.show_document` with `{focus=true}` instead
---@param location lsp.Location|lsp.LocationLink
---@param position_encoding 'utf-8'|'utf-16'|'utf-32'?
---@param reuse_win boolean? Jump to existing window if buffer is already open.
---@return boolean `true` if the jump succeeded
function M.jump_to_location(location, position_encoding, reuse_win)
vim.deprecate('vim.lsp.util.jump_to_location', nil, '0.12')
return M.show_document(location, position_encoding, { reuse_win = reuse_win, focus = true })
end
--- Previews a location in a floating window
---
--- behavior depends on type of location:
--- - for Location, range is shown (e.g., function definition)
--- - for LocationLink, targetRange is shown (e.g., body of function definition)
---
---@param location lsp.Location|lsp.LocationLink
---@param opts? vim.lsp.util.open_floating_preview.Opts
---@return integer? buffer id of float window
---@return integer? window id of float window
function M.preview_location(location, opts)
-- location may be LocationLink or Location (more useful for the former)
local uri = location.targetUri or location.uri
if uri == nil then
return
end
local bufnr = vim.uri_to_bufnr(uri)
if not api.nvim_buf_is_loaded(bufnr) then
vim.fn.bufload(bufnr)
end
local range = location.targetRange or location.range
local contents = api.nvim_buf_get_lines(bufnr, range.start.line, range['end'].line + 1, false)
local syntax = vim.bo[bufnr].syntax
if syntax == '' then
-- When no syntax is set, we use filetype as fallback. This might not result
-- in a valid syntax definition.
-- An empty syntax is more common now with TreeSitter, since TS disables syntax.
syntax = vim.bo[bufnr].filetype
end
opts = opts or {}
opts.focus_id = 'location'
return M.open_floating_preview(contents, syntax, opts)
end
local function find_window_by_var(name, value)
for _, win in ipairs(api.nvim_list_wins()) do
if vim.w[win][name] == value then
return win
end
end
end
---Returns true if the line is empty or only contains whitespace.
---@param line string
---@return boolean
local function is_blank_line(line)
return line and line:match('^%s*$')
end
---Returns true if the line corresponds to a Markdown thematic break.
---@param line string
---@return boolean
local function is_separator_line(line)
return line and line:match('^ ? ? ?%-%-%-+%s*$')
end
---Replaces separator lines by the given divider and removing surrounding blank lines.
---@param contents string[]
---@param divider string
---@return string[]
local function replace_separators(contents, divider)
local trimmed = {}
local l = 1
while l <= #contents do
local line = contents[l]
if is_separator_line(line) then
if l > 1 and is_blank_line(contents[l - 1]) then
table.remove(trimmed)
end
table.insert(trimmed, divider)
if is_blank_line(contents[l + 1]) then
l = l + 1
end
else
table.insert(trimmed, line)
end
l = l + 1
end
return trimmed
end
---Collapses successive blank lines in the input table into a single one.
---@param contents string[]
---@return string[]
local function collapse_blank_lines(contents)
local collapsed = {}
local l = 1
while l <= #contents do
local line = contents[l]
if is_blank_line(line) then
while is_blank_line(contents[l + 1]) do
l = l + 1
end
end
table.insert(collapsed, line)
l = l + 1
end
return collapsed
end
local function get_markdown_fences()
local fences = {} --- @type table<string,string>
for _, fence in
pairs(vim.g.markdown_fenced_languages or {} --[[@as string[] ]])
do
local lang, syntax = fence:match('^(.*)=(.*)$')
if lang then
fences[lang] = syntax
end
end
return fences
end
--- @deprecated
--- Converts markdown into syntax highlighted regions by stripping the code
--- blocks and converting them into highlighted code.
--- This will by default insert a blank line separator after those code block
--- regions to improve readability.
---
--- This method configures the given buffer and returns the lines to set.
---
--- If you want to open a popup with fancy markdown, use `open_floating_preview` instead
---
---@param bufnr integer
---@param contents string[] of lines to show in window
---@param opts? table with optional fields
--- - height of floating window
--- - width of floating window
--- - wrap_at character to wrap at for computing height
--- - max_width maximal width of floating window
--- - max_height maximal height of floating window
--- - separator insert separator after code block
---@return table stripped content
function M.stylize_markdown(bufnr, contents, opts)
vim.deprecate('vim.lsp.util.stylize_markdown', nil, '0.14')
validate('contents', contents, 'table')
validate('opts', opts, 'table', true)
opts = opts or {}
-- table of fence types to {ft, begin, end}
-- when ft is nil, we get the ft from the regex match
local matchers = {
block = { nil, '```+%s*([a-zA-Z0-9_]*)', '```+' },
pre = { nil, '<pre>([a-z0-9]*)', '</pre>' },
code = { '', '<code>', '</code>' },
text = { 'text', '<text>', '</text>' },
}
--- @param line string
--- @return {type:string,ft:string}?
local function match_begin(line)
for type, pattern in pairs(matchers) do
--- @type string?
local ret = line:match(string.format('^%%s*%s%%s*$', pattern[2]))
if ret then
return {
type = type,
ft = pattern[1] or ret,
}
end
end
end
--- @param line string
--- @param match {type:string,ft:string}
--- @return string
local function match_end(line, match)
local pattern = matchers[match.type]
return line:match(string.format('^%%s*%s%%s*$', pattern[3]))
end
-- Clean up
contents = vim.split(table.concat(contents, '\n'), '\n', { trimempty = true })
local stripped = {} --- @type string[]
local highlights = {} --- @type {ft:string,start:integer,finish:integer}[]
local i = 1
while i <= #contents do
local line = contents[i]
local match = match_begin(line)
if match then
local start = #stripped
i = i + 1
while i <= #contents do
line = contents[i]
if match_end(line, match) then
i = i + 1
break
end
stripped[#stripped + 1] = line
i = i + 1
end
table.insert(highlights, {
ft = match.ft,
start = start + 1,
finish = #stripped,
})
-- add a separator, but not on the last line
if opts.separator and i < #contents then
stripped[#stripped + 1] = '---'
end
else
-- strip any empty lines or separators prior to this separator in actual markdown
if line:match('^---+$') then
while
stripped[#stripped]
and (stripped[#stripped]:match('^%s*$') or stripped[#stripped]:match('^---+$'))
do
stripped[#stripped] = nil
end
end
-- add the line if its not an empty line following a separator
if
not (line:match('^%s*$') and stripped[#stripped] and stripped[#stripped]:match('^---+$'))
then
stripped[#stripped + 1] = line
end
i = i + 1
end
end
-- Handle some common html escape sequences
--- @type string[]
stripped = vim.tbl_map(
--- @param line string
function(line)
local escapes = {
['&gt;'] = '>',
['&lt;'] = '<',
['&quot;'] = '"',
['&apos;'] = "'",
['&ensp;'] = ' ',
['&emsp;'] = ' ',
['&amp;'] = '&',
}
return (line:gsub('&[^ ;]+;', escapes))
end,
stripped
)
-- Compute size of float needed to show (wrapped) lines
opts.wrap_at = opts.wrap_at or (vim.wo['wrap'] and api.nvim_win_get_width(0))
local width = M._make_floating_popup_size(stripped, opts)
local sep_line = string.rep('', math.min(width, opts.wrap_at or width))
for l in ipairs(stripped) do
if stripped[l]:match('^---+$') then
stripped[l] = sep_line
end
end
api.nvim_buf_set_lines(bufnr, 0, -1, false, stripped)
local idx = 1
-- keep track of syntaxes we already included.
-- no need to include the same syntax more than once
local langs = {} --- @type table<string,boolean>
local fences = get_markdown_fences()
local function apply_syntax_to_region(ft, start, finish)
if ft == '' then
vim.cmd(
string.format(
'syntax region markdownCode start=+\\%%%dl+ end=+\\%%%dl+ keepend extend',
start,
finish + 1
)
)
return
end
ft = fences[ft] or ft
local name = ft .. idx
idx = idx + 1
local lang = '@' .. ft:upper()
if not langs[lang] then
-- HACK: reset current_syntax, since some syntax files like markdown won't load if it is already set
pcall(api.nvim_buf_del_var, bufnr, 'current_syntax')
if #api.nvim_get_runtime_file(('syntax/%s.vim'):format(ft), true) == 0 then
return
end
--- @diagnostic disable-next-line:param-type-mismatch
pcall(vim.cmd, string.format('syntax include %s syntax/%s.vim', lang, ft))
langs[lang] = true
end
vim.cmd(
string.format(
'syntax region %s start=+\\%%%dl+ end=+\\%%%dl+ contains=%s keepend',
name,
start,
finish + 1,
lang
)
)
end
-- needs to run in the buffer for the regions to work
vim._with({ buf = bufnr }, function()
-- we need to apply lsp_markdown regions speperately, since otherwise
-- markdown regions can "bleed" through the other syntax regions
-- and mess up the formatting
local last = 1
for _, h in ipairs(highlights) do
if last < h.start then
apply_syntax_to_region('lsp_markdown', last, h.start - 1)
end
apply_syntax_to_region(h.ft, h.start, h.finish)
last = h.finish + 1
end
if last <= #stripped then
apply_syntax_to_region('lsp_markdown', last, #stripped)
end
end)
return stripped
end
--- @class (private) vim.lsp.util._normalize_markdown.Opts
--- @field width integer Thematic breaks are expanded to this size. Defaults to 80.
--- Normalizes Markdown input to a canonical form.
---
--- The returned Markdown adheres to the GitHub Flavored Markdown (GFM)
--- specification.
---
--- The following transformations are made:
---
--- 1. Carriage returns ('\r') and empty lines at the beginning and end are removed
--- 2. Successive empty lines are collapsed into a single empty line
--- 3. Thematic breaks are expanded to the given width
---
---@param contents string[]
---@param opts? vim.lsp.util._normalize_markdown.Opts
---@return string[] table of lines containing normalized Markdown
---@see https://github.github.com/gfm
function M._normalize_markdown(contents, opts)
validate('contents', contents, 'table')
validate('opts', opts, 'table', true)
opts = opts or {}
-- 1. Carriage returns are removed
contents = vim.split(table.concat(contents, '\n'):gsub('\r', ''), '\n', { trimempty = true })
-- 2. Successive empty lines are collapsed into a single empty line
contents = collapse_blank_lines(contents)
-- 3. Thematic breaks are expanded to the given width
local divider = string.rep('', opts.width or 80)
contents = replace_separators(contents, divider)
return contents
end
--- Closes the preview window
---
---@param winnr integer window id of preview window
---@param bufnrs table? optional list of ignored buffers
local function close_preview_window(winnr, bufnrs)
vim.schedule(function()
-- exit if we are in one of ignored buffers
if bufnrs and vim.list_contains(bufnrs, api.nvim_get_current_buf()) then
return
end
local augroup = 'nvim.preview_window_' .. winnr
pcall(api.nvim_del_augroup_by_name, augroup)
pcall(api.nvim_win_close, winnr, true)
end)
end
--- Creates autocommands to close a preview window when events happen.
---
---@param events table list of events
---@param winnr integer window id of preview window
---@param floating_bufnr integer floating preview buffer
---@param bufnr integer buffer that opened the floating preview buffer
---@see autocmd-events
local function close_preview_autocmd(events, winnr, floating_bufnr, bufnr)
local augroup = api.nvim_create_augroup('nvim.preview_window_' .. winnr, {
clear = true,
})
-- close the preview window when entered a buffer that is not
-- the floating window buffer or the buffer that spawned it
api.nvim_create_autocmd('BufLeave', {
group = augroup,
buffer = bufnr,
callback = function()
vim.schedule(function()
-- When jumping to the quickfix window from the preview window,
-- do not close the preview window.
if api.nvim_get_option_value('filetype', { buf = 0 }) ~= 'qf' then
close_preview_window(winnr, { floating_bufnr, bufnr })
end
end)
end,
})
if #events > 0 then
api.nvim_create_autocmd(events, {
group = augroup,
buffer = bufnr,
callback = function()
close_preview_window(winnr)
end,
})
end
end
--- Computes size of float needed to show contents (with optional wrapping)
---
---@param contents string[] of lines to show in window
---@param opts? vim.lsp.util.open_floating_preview.Opts
---@return integer width size of float
---@return integer height size of float
function M._make_floating_popup_size(contents, opts)
validate('contents', contents, 'table')
validate('opts', opts, 'table', true)
opts = opts or {}
local width = opts.width
local height = opts.height
local wrap_at = opts.wrap_at
local max_width = opts.max_width
local max_height = opts.max_height
local line_widths = {} --- @type table<integer,integer>
if not width then
width = 0
for i, line in ipairs(contents) do
-- TODO(ashkan) use nvim_strdisplaywidth if/when that is introduced.
line_widths[i] = vim.fn.strdisplaywidth(line:gsub('%z', '\n'))
width = math.max(line_widths[i], width)
end
end
local _, border_width = get_border_size(opts)
local screen_width = api.nvim_win_get_width(0)
width = math.min(width, screen_width)
-- make sure borders are always inside the screen
width = math.min(width, screen_width - border_width)
-- Make sure that the width is large enough to fit the title.
local title_length = 0
local chunks = type(opts.title) == 'string' and { { opts.title } } or opts.title or {}
for _, chunk in
ipairs(chunks --[=[@as [string, string][]]=])
do
title_length = title_length + vim.fn.strdisplaywidth(chunk[1])
end
width = math.max(width, title_length)
if wrap_at then
wrap_at = math.min(wrap_at, width)
end
if max_width then
width = math.min(width, max_width)
wrap_at = math.min(wrap_at or max_width, max_width)
end
if not height then
height = #contents
if wrap_at and width >= wrap_at then
height = 0
if vim.tbl_isempty(line_widths) then
for _, line in ipairs(contents) do
local line_width = vim.fn.strdisplaywidth(line:gsub('%z', '\n'))
height = height + math.max(1, math.ceil(line_width / wrap_at))
end
else
for i = 1, #contents do
height = height + math.max(1, math.ceil(line_widths[i] / wrap_at))
end
end
end
end
if max_height then
height = math.min(height, max_height)
end
return width, height
end
--- @class vim.lsp.util.open_floating_preview.Opts
---
--- Height of floating window
--- @field height? integer
---
--- Width of floating window
--- @field width? integer
---
--- Wrap long lines
--- (default: `true`)
--- @field wrap? boolean
---
--- Character to wrap at for computing height when wrap is enabled
--- @field wrap_at? integer
---
--- Maximal width of floating window
--- @field max_width? integer
---
--- Maximal height of floating window
--- @field max_height? integer
---
--- If a popup with this id is opened, then focus it
--- @field focus_id? string
---
--- List of events that closes the floating window
--- @field close_events? table
---
--- Make float focusable.
--- (default: `true`)
--- @field focusable? boolean
---
--- If `true`, and if {focusable} is also `true`, focus an existing floating
--- window with the same {focus_id}
--- (default: `true`)
--- @field focus? boolean
---
--- offset to add to `col`
--- @field offset_x? integer
---
--- offset to add to `row`
--- @field offset_y? integer
--- @field border? string|(string|[string,string])[] override `border`
--- @field zindex? integer override `zindex`, defaults to 50
--- @field title? string|[string,string][]
--- @field title_pos? 'left'|'center'|'right'
---
--- (default: `'cursor'`)
--- @field relative? 'mouse'|'cursor'|'editor'
---
--- Adjusts placement relative to cursor.
--- - "auto": place window based on which side of the cursor has more lines
--- - "above": place the window above the cursor unless there are not enough lines
--- to display the full window height.
--- - "below": place the window below the cursor unless there are not enough lines
--- to display the full window height.
--- (default: `'auto'`)
--- @field anchor_bias? 'auto'|'above'|'below'
---
--- @field _update_win? integer
--- Shows contents in a floating window.
---
---@param contents table of lines to show in window
---@param syntax string of syntax to set for opened buffer
---@param opts? vim.lsp.util.open_floating_preview.Opts with optional fields
--- (additional keys are filtered with |vim.lsp.util.make_floating_popup_options()|
--- before they are passed on to |nvim_open_win()|)
---@return integer bufnr of newly created float window
---@return integer winid of newly created float window preview window
function M.open_floating_preview(contents, syntax, opts)
validate('contents', contents, 'table')
validate('syntax', syntax, 'string', true)
validate('opts', opts, 'table', true)
opts = opts or {}
opts.wrap = opts.wrap ~= false -- wrapping by default
opts.focus = opts.focus ~= false
opts.close_events = opts.close_events or { 'CursorMoved', 'CursorMovedI', 'InsertCharPre' }
local bufnr = api.nvim_get_current_buf()
local floating_winnr = opts._update_win
-- Create/get the buffer
local floating_bufnr --- @type integer
if floating_winnr then
floating_bufnr = api.nvim_win_get_buf(floating_winnr)
else
-- check if this popup is focusable and we need to focus
if opts.focus_id and opts.focusable ~= false and opts.focus then
-- Go back to previous window if we are in a focusable one
local current_winnr = api.nvim_get_current_win()
if vim.w[current_winnr][opts.focus_id] then
api.nvim_command('wincmd p')
return bufnr, current_winnr
end
do
local win = find_window_by_var(opts.focus_id, bufnr)
if win and api.nvim_win_is_valid(win) and vim.fn.pumvisible() == 0 then
-- focus and return the existing buf, win
api.nvim_set_current_win(win)
api.nvim_command('stopinsert')
return api.nvim_win_get_buf(win), win
end
end
end
-- check if another floating preview already exists for this buffer
-- and close it if needed
local existing_float = vim.b[bufnr].lsp_floating_preview
if existing_float and api.nvim_win_is_valid(existing_float) then
api.nvim_win_close(existing_float, true)
end
floating_bufnr = api.nvim_create_buf(false, true)
end
-- Set up the contents, using treesitter for markdown
local do_stylize = syntax == 'markdown' and vim.g.syntax_on ~= nil
if do_stylize then
local width = M._make_floating_popup_size(contents, opts)
contents = M._normalize_markdown(contents, { width = width })
else
-- Clean up input: trim empty lines
contents = vim.split(table.concat(contents, '\n'), '\n', { trimempty = true })
if syntax then
vim.bo[floating_bufnr].syntax = syntax
end
end
vim.bo[floating_bufnr].modifiable = true
api.nvim_buf_set_lines(floating_bufnr, 0, -1, false, contents)
if floating_winnr then
api.nvim_win_set_config(floating_winnr, {
border = opts.border,
title = opts.title,
})
else
-- Compute size of float needed to show (wrapped) lines
if opts.wrap then
opts.wrap_at = opts.wrap_at or api.nvim_win_get_width(0)
else
opts.wrap_at = nil
end
-- TODO(lewis6991): These function assume the current window to determine options,
-- therefore it won't work for opts._update_win and the current window if the floating
-- window
local width, height = M._make_floating_popup_size(contents, opts)
local float_option = M.make_floating_popup_options(width, height, opts)
floating_winnr = api.nvim_open_win(floating_bufnr, false, float_option)
api.nvim_buf_set_keymap(
floating_bufnr,
'n',
'q',
'<cmd>bdelete<cr>',
{ silent = true, noremap = true, nowait = true }
)
close_preview_autocmd(opts.close_events, floating_winnr, floating_bufnr, bufnr)
-- save focus_id
if opts.focus_id then
api.nvim_win_set_var(floating_winnr, opts.focus_id, bufnr)
end
api.nvim_buf_set_var(bufnr, 'lsp_floating_preview', floating_winnr)
api.nvim_win_set_var(floating_winnr, 'lsp_floating_bufnr', bufnr)
end
api.nvim_create_autocmd('WinClosed', {
group = api.nvim_create_augroup('nvim.closing_floating_preview', { clear = true }),
callback = function(args)
local winid = tonumber(args.match)
local ok, preview_bufnr = pcall(api.nvim_win_get_var, winid, 'lsp_floating_bufnr')
if
ok
and api.nvim_buf_is_valid(preview_bufnr)
and winid == vim.b[preview_bufnr].lsp_floating_preview
then
vim.b[bufnr].lsp_floating_preview = nil
return true
end
end,
})
vim.wo[floating_winnr].foldenable = false -- Disable folding.
vim.wo[floating_winnr].wrap = opts.wrap -- Soft wrapping.
vim.wo[floating_winnr].breakindent = true -- Slightly better list presentation.
vim.wo[floating_winnr].smoothscroll = true -- Scroll by screen-line instead of buffer-line.
vim.bo[floating_bufnr].modifiable = false
vim.bo[floating_bufnr].bufhidden = 'wipe'
if do_stylize then
vim.wo[floating_winnr].conceallevel = 2
vim.wo[floating_winnr].concealcursor = 'n'
vim.bo[floating_bufnr].filetype = 'markdown'
vim.treesitter.start(floating_bufnr)
if not opts.height then
-- Reduce window height if TS highlighter conceals code block backticks.
local win_height = api.nvim_win_get_height(floating_winnr)
local text_height = api.nvim_win_text_height(floating_winnr, { max_height = win_height }).all
if text_height < win_height then
api.nvim_win_set_height(floating_winnr, text_height)
end
end
end
return floating_bufnr, floating_winnr
end
do --[[ References ]]
local reference_ns = api.nvim_create_namespace('nvim.lsp.references')
--- Removes document highlights from a buffer.
---
---@param bufnr integer? Buffer id
function M.buf_clear_references(bufnr)
api.nvim_buf_clear_namespace(bufnr or 0, reference_ns, 0, -1)
end
--- Shows a list of document highlights for a certain buffer.
---
---@param bufnr integer Buffer id
---@param references lsp.DocumentHighlight[] objects to highlight
---@param position_encoding 'utf-8'|'utf-16'|'utf-32'
---@see https://microsoft.github.io/language-server-protocol/specification/#textDocumentContentChangeEvent
function M.buf_highlight_references(bufnr, references, position_encoding)
validate('bufnr', bufnr, 'number', true)
validate('position_encoding', position_encoding, 'string', false)
for _, reference in ipairs(references) do
local range = reference.range
local start_line = range.start.line
local end_line = range['end'].line
local start_idx = get_line_byte_from_position(bufnr, range.start, position_encoding)
local end_idx = get_line_byte_from_position(bufnr, range['end'], position_encoding)
local document_highlight_kind = {
[protocol.DocumentHighlightKind.Text] = 'LspReferenceText',
[protocol.DocumentHighlightKind.Read] = 'LspReferenceRead',
[protocol.DocumentHighlightKind.Write] = 'LspReferenceWrite',
}
local kind = reference['kind'] or protocol.DocumentHighlightKind.Text
vim.hl.range(
bufnr,
reference_ns,
document_highlight_kind[kind],
{ start_line, start_idx },
{ end_line, end_idx },
{ priority = vim.hl.priorities.user }
)
end
end
end
local position_sort = sort_by_key(function(v)
return { v.start.line, v.start.character }
end)
--- Returns the items with the byte position calculated correctly and in sorted
--- order, for display in quickfix and location lists.
---
--- The `user_data` field of each resulting item will contain the original
--- `Location` or `LocationLink` it was computed from.
---
--- The result can be passed to the {list} argument of |setqflist()| or
--- |setloclist()|.
---
---@param locations lsp.Location[]|lsp.LocationLink[]
---@param position_encoding? 'utf-8'|'utf-16'|'utf-32'
--- default to first client of buffer
---@return vim.quickfix.entry[] # See |setqflist()| for the format
function M.locations_to_items(locations, position_encoding)
if position_encoding == nil then
vim.notify_once(
'locations_to_items must be called with valid position encoding',
vim.log.levels.WARN
)
position_encoding = vim.lsp.get_clients({ bufnr = 0 })[1].offset_encoding
end
local items = {} --- @type vim.quickfix.entry[]
---@type table<string, {start: lsp.Position, end: lsp.Position, location: lsp.Location|lsp.LocationLink}[]>
local grouped = {}
for _, d in ipairs(locations) do
-- locations may be Location or LocationLink
local uri = d.uri or d.targetUri
local range = d.range or d.targetSelectionRange
grouped[uri] = grouped[uri] or {}
table.insert(grouped[uri], { start = range.start, ['end'] = range['end'], location = d })
end
for uri, rows in vim.spairs(grouped) do
table.sort(rows, position_sort)
local filename = vim.uri_to_fname(uri)
local line_numbers = {}
for _, temp in ipairs(rows) do
table.insert(line_numbers, temp.start.line)
if temp.start.line ~= temp['end'].line then
table.insert(line_numbers, temp['end'].line)
end
end
-- get all the lines for this uri
local lines = get_lines(vim.uri_to_bufnr(uri), line_numbers)
for _, temp in ipairs(rows) do
local pos = temp.start
local end_pos = temp['end']
local row = pos.line
local end_row = end_pos.line
local line = lines[row] or ''
local end_line = lines[end_row] or ''
local col = vim.str_byteindex(line, position_encoding, pos.character, false)
local end_col = vim.str_byteindex(end_line, position_encoding, end_pos.character, false)
items[#items + 1] = {
filename = filename,
lnum = row + 1,
end_lnum = end_row + 1,
col = col + 1,
end_col = end_col + 1,
text = line,
user_data = temp.location,
}
end
end
return items
end
--- Converts symbols to quickfix list items.
---
---@param symbols lsp.DocumentSymbol[]|lsp.SymbolInformation[]|lsp.WorkspaceSymbol[] list of symbols
---@param bufnr? integer buffer handle or 0 for current, defaults to current
---@param position_encoding? 'utf-8'|'utf-16'|'utf-32'
--- default to first client of buffer
---@return vim.quickfix.entry[] # See |setqflist()| for the format
function M.symbols_to_items(symbols, bufnr, position_encoding)
bufnr = vim._resolve_bufnr(bufnr)
if position_encoding == nil then
vim.notify_once(
'symbols_to_items must be called with valid position encoding',
vim.log.levels.WARN
)
position_encoding = assert(vim.lsp.get_clients({ bufnr = bufnr })[1]).offset_encoding
end
local items = {} --- @type vim.quickfix.entry[]
for _, symbol in ipairs(symbols) do
--- @type string?, lsp.Range?
local filename, range
if symbol.location then
--- @cast symbol lsp.SymbolInformation
filename = vim.uri_to_fname(symbol.location.uri)
range = symbol.location.range
elseif symbol.selectionRange then
--- @cast symbol lsp.DocumentSymbol
filename = api.nvim_buf_get_name(bufnr)
range = symbol.selectionRange
end
if filename and range then
local kind = protocol.SymbolKind[symbol.kind] or 'Unknown'
local lnum = range['start'].line + 1
local col = get_line_byte_from_position(bufnr, range['start'], position_encoding) + 1
local end_lnum = range['end'].line + 1
local end_col = get_line_byte_from_position(bufnr, range['end'], position_encoding) + 1
local is_deprecated = symbol.deprecated
or (symbol.tags and vim.tbl_contains(symbol.tags, protocol.SymbolTag.Deprecated))
local text = string.format(
'[%s] %s%s%s',
kind,
symbol.name,
symbol.containerName and ' in ' .. symbol.containerName or '',
is_deprecated and ' (deprecated)' or ''
)
items[#items + 1] = {
filename = filename,
lnum = lnum,
col = col,
end_lnum = end_lnum,
end_col = end_col,
kind = kind,
text = text,
}
end
if symbol.children then
list_extend(items, M.symbols_to_items(symbol.children, bufnr, position_encoding))
end
end
return items
end
--- Removes empty lines from the beginning and end.
---@deprecated use `vim.split()` with `trimempty` instead
---@param lines table list of lines to trim
---@return table trimmed list of lines
function M.trim_empty_lines(lines)
vim.deprecate('vim.lsp.util.trim_empty_lines()', 'vim.split() with `trimempty`', '0.12')
local start = 1
for i = 1, #lines do
if lines[i] ~= nil and #lines[i] > 0 then
start = i
break
end
end
local finish = 1
for i = #lines, 1, -1 do
if lines[i] ~= nil and #lines[i] > 0 then
finish = i
break
end
end
return vim.list_slice(lines, start, finish)
end
--- Accepts markdown lines and tries to reduce them to a filetype if they
--- comprise just a single code block.
---
--- CAUTION: Modifies the input in-place!
---
---@deprecated
---@param lines string[] list of lines
---@return string filetype or "markdown" if it was unchanged.
function M.try_trim_markdown_code_blocks(lines)
vim.deprecate('vim.lsp.util.try_trim_markdown_code_blocks()', 'nil', '0.12')
local language_id = assert(lines[1]):match('^```(.*)')
if language_id then
local has_inner_code_fence = false
for i = 2, (#lines - 1) do
local line = lines[i] --[[@as string]]
if line:sub(1, 3) == '```' then
has_inner_code_fence = true
break
end
end
-- No inner code fences + starting with code fence = hooray.
if not has_inner_code_fence then
table.remove(lines, 1)
table.remove(lines)
return language_id
end
end
return 'markdown'
end
---@param window integer?: |window-ID| or 0 for current, defaults to current
---@param position_encoding 'utf-8'|'utf-16'|'utf-32'
local function make_position_param(window, position_encoding)
window = window or 0
local buf = api.nvim_win_get_buf(window)
local row, col = unpack(api.nvim_win_get_cursor(window))
row = row - 1
local line = api.nvim_buf_get_lines(buf, row, row + 1, true)[1]
if not line then
return { line = 0, character = 0 }
end
col = vim.str_utfindex(line, position_encoding, col, false)
return { line = row, character = col }
end
--- Creates a `TextDocumentPositionParams` object for the current buffer and cursor position.
---
---@param window integer?: |window-ID| or 0 for current, defaults to current
---@param position_encoding 'utf-8'|'utf-16'|'utf-32'
---@return lsp.TextDocumentPositionParams
---@see https://microsoft.github.io/language-server-protocol/specifications/specification-current/#textDocumentPositionParams
function M.make_position_params(window, position_encoding)
window = window or 0
local buf = api.nvim_win_get_buf(window)
if position_encoding == nil then
vim.notify_once(
'position_encoding param is required in vim.lsp.util.make_position_params. Defaulting to position encoding of the first client.',
vim.log.levels.WARN
)
--- @diagnostic disable-next-line: deprecated
position_encoding = M._get_offset_encoding(buf)
end
return {
textDocument = M.make_text_document_params(buf),
position = make_position_param(window, position_encoding),
}
end
--- Utility function for getting the encoding of the first LSP client on the given buffer.
---@deprecated
---@param bufnr integer buffer handle or 0 for current, defaults to current
---@return 'utf-8'|'utf-16'|'utf-32' encoding first client if there is one, nil otherwise
function M._get_offset_encoding(bufnr)
validate('bufnr', bufnr, 'number', true)
local offset_encoding --- @type 'utf-8'|'utf-16'|'utf-32'?
for _, client in pairs(vim.lsp.get_clients({ bufnr = bufnr })) do
if client.offset_encoding == nil then
vim.notify_once(
string.format(
'Client (id: %s) offset_encoding is nil. Do not unset offset_encoding.',
client.id
),
vim.log.levels.ERROR
)
end
local this_offset_encoding = client.offset_encoding
if not offset_encoding then
offset_encoding = this_offset_encoding
elseif offset_encoding ~= this_offset_encoding then
vim.notify_once(
'warning: multiple different client offset_encodings detected for buffer, vim.lsp.util._get_offset_encoding() uses the offset_encoding from the first client',
vim.log.levels.WARN
)
end
end
--- @cast offset_encoding -? hack - not safe
return offset_encoding
end
--- Using the current position in the current buffer, creates an object that
--- can be used as a building block for several LSP requests, such as
--- `textDocument/codeAction`, `textDocument/colorPresentation`,
--- `textDocument/rangeFormatting`.
---
---@param window integer?: |window-ID| or 0 for current, defaults to current
---@param position_encoding "utf-8"|"utf-16"|"utf-32"
---@return { textDocument: { uri: lsp.DocumentUri }, range: lsp.Range }
function M.make_range_params(window, position_encoding)
local buf = api.nvim_win_get_buf(window or 0)
if position_encoding == nil then
vim.notify_once(
'position_encoding param is required in vim.lsp.util.make_range_params. Defaulting to position encoding of the first client.',
vim.log.levels.WARN
)
--- @diagnostic disable-next-line: deprecated
position_encoding = M._get_offset_encoding(buf)
end
local position = make_position_param(window, position_encoding)
return {
textDocument = M.make_text_document_params(buf),
range = { start = position, ['end'] = position },
}
end
--- Using the given range in the current buffer, creates an object that
--- is similar to |vim.lsp.util.make_range_params()|.
---
---@param start_pos [integer,integer]? {row,col} mark-indexed position.
--- Defaults to the start of the last visual selection.
---@param end_pos [integer,integer]? {row,col} mark-indexed position.
--- Defaults to the end of the last visual selection.
---@param bufnr integer? buffer handle or 0 for current, defaults to current
---@param position_encoding 'utf-8'|'utf-16'|'utf-32'
---@return { textDocument: { uri: lsp.DocumentUri }, range: lsp.Range }
function M.make_given_range_params(start_pos, end_pos, bufnr, position_encoding)
validate('start_pos', start_pos, 'table', true)
validate('end_pos', end_pos, 'table', true)
validate('position_encoding', position_encoding, 'string', true)
bufnr = vim._resolve_bufnr(bufnr)
if position_encoding == nil then
vim.notify_once(
'position_encoding param is required in vim.lsp.util.make_given_range_params. Defaulting to position encoding of the first client.',
vim.log.levels.WARN
)
--- @diagnostic disable-next-line: deprecated
position_encoding = M._get_offset_encoding(bufnr)
end
--- @type [integer, integer]
local A = { unpack(start_pos or api.nvim_buf_get_mark(bufnr, '<')) }
--- @type [integer, integer]
local B = { unpack(end_pos or api.nvim_buf_get_mark(bufnr, '>')) }
-- convert to 0-index
A[1] = A[1] - 1
B[1] = B[1] - 1
-- account for position_encoding.
if A[2] > 0 then
A[2] = M.character_offset(bufnr, A[1], A[2], position_encoding)
end
if B[2] > 0 then
B[2] = M.character_offset(bufnr, B[1], B[2], position_encoding)
end
-- we need to offset the end character position otherwise we loose the last
-- character of the selection, as LSP end position is exclusive
-- see https://microsoft.github.io/language-server-protocol/specification#range
if vim.o.selection ~= 'exclusive' then
B[2] = B[2] + 1
end
return {
textDocument = M.make_text_document_params(bufnr),
range = {
start = { line = A[1], character = A[2] },
['end'] = { line = B[1], character = B[2] },
},
}
end
--- Creates a `TextDocumentIdentifier` object for the current buffer.
---
---@param bufnr integer?: Buffer handle, defaults to current
---@return lsp.TextDocumentIdentifier
---@see https://microsoft.github.io/language-server-protocol/specifications/specification-current/#textDocumentIdentifier
function M.make_text_document_params(bufnr)
return { uri = vim.uri_from_bufnr(bufnr or 0) }
end
--- Create the workspace params
---@param added lsp.WorkspaceFolder[]
---@param removed lsp.WorkspaceFolder[]
---@return lsp.DidChangeWorkspaceFoldersParams
function M.make_workspace_params(added, removed)
return { event = { added = added, removed = removed } }
end
--- Returns indentation size.
---
---@see 'shiftwidth'
---@param bufnr integer?: Buffer handle, defaults to current
---@return integer indentation size
function M.get_effective_tabstop(bufnr)
validate('bufnr', bufnr, 'number', true)
local bo = bufnr and vim.bo[bufnr] or vim.bo
local sw = bo.shiftwidth
return (sw == 0 and bo.tabstop) or sw
end
--- Creates a `DocumentFormattingParams` object for the current buffer and cursor position.
---
---@param options lsp.FormattingOptions? with valid `FormattingOptions` entries
---@return lsp.DocumentFormattingParams object
---@see https://microsoft.github.io/language-server-protocol/specifications/specification-current/#textDocument_formatting
function M.make_formatting_params(options)
validate('options', options, 'table', true)
options = vim.tbl_extend('keep', options or {}, {
tabSize = M.get_effective_tabstop(),
insertSpaces = vim.bo.expandtab,
})
return {
textDocument = { uri = vim.uri_from_bufnr(0) },
options = options,
}
end
--- Returns the UTF-32 and UTF-16 offsets for a position in a certain buffer.
---
---@param buf integer buffer number (0 for current)
---@param row integer 0-indexed line
---@param col integer 0-indexed byte offset in line
---@param offset_encoding? 'utf-8'|'utf-16'|'utf-32'
--- defaults to `offset_encoding` of first client of `buf`
---@return integer `offset_encoding` index of the character in line {row} column {col} in buffer {buf}
function M.character_offset(buf, row, col, offset_encoding)
local line = get_line(buf, row)
if offset_encoding == nil then
vim.notify_once(
'character_offset must be called with valid offset encoding',
vim.log.levels.WARN
)
offset_encoding = assert(vim.lsp.get_clients({ bufnr = buf })[1]).offset_encoding
end
return vim.str_utfindex(line, offset_encoding, col, false)
end
--- Helper function to return nested values in language server settings
---
---@param settings table language server settings
---@param section string indicating the field of the settings table
---@return table|string|vim.NIL The value of settings accessed via section. `vim.NIL` if not found.
---@deprecated
function M.lookup_section(settings, section)
vim.deprecate('vim.lsp.util.lookup_section()', 'vim.tbl_get() with `vim.split`', '0.12')
for part in vim.gsplit(section, '.', { plain = true }) do
--- @diagnostic disable-next-line:no-unknown
settings = settings[part]
if settings == nil then
return vim.NIL
end
end
return settings
end
--- Converts line range (0-based, end-inclusive) to lsp range,
--- handles absence of a trailing newline
---
---@param bufnr integer
---@param start_line integer
---@param end_line integer
---@param position_encoding 'utf-8'|'utf-16'|'utf-32'
---@return lsp.Range
function M._make_line_range_params(bufnr, start_line, end_line, position_encoding)
local last_line = api.nvim_buf_line_count(bufnr) - 1
---@type lsp.Position
local end_pos
if end_line == last_line and not vim.bo[bufnr].endofline then
end_pos = {
line = end_line,
character = M.character_offset(
bufnr,
end_line,
#get_line(bufnr, end_line),
position_encoding
),
}
else
end_pos = { line = end_line + 1, character = 0 }
end
return {
start = { line = start_line, character = 0 },
['end'] = end_pos,
}
end
---@class (private) vim.lsp.util._cancel_requests.Filter
---@field bufnr? integer
---@field clients? vim.lsp.Client[]
---@field method? vim.lsp.protocol.Method.ClientToServer.Request
---@field type? string
--- Cancel all {filter}ed requests.
---
---@param filter? vim.lsp.util._cancel_requests.Filter
function M._cancel_requests(filter)
filter = filter or {}
local bufnr = filter.bufnr and vim._resolve_bufnr(filter.bufnr) or nil
local clients = filter.clients
local method = filter.method
local type = filter.type
for _, client in
ipairs(clients or vim.lsp.get_clients({
bufnr = bufnr,
method = method,
}))
do
for id, request in pairs(client.requests) do
if
(bufnr == nil or bufnr == request.bufnr)
and (method == nil or method == request.method)
and (type == nil or type == request.type)
then
client:cancel_request(id)
end
end
end
end
---@param feature string
---@param client_id? integer
local function make_enable_var(feature, client_id)
return ('_lsp_enabled_%s%s'):format(feature, client_id and ('_client_%d'):format(client_id) or '')
end
---@class vim.lsp.enable.Filter
---@inlinedoc
---
--- Buffer number, or 0 for current buffer, or nil for all.
---@field bufnr? integer
---
--- Client ID, or nil for all
---@field client_id? integer
---@param feature string
---@param filter? vim.lsp.enable.Filter
function M._is_enabled(feature, filter)
vim.validate('feature', feature, 'string')
vim.validate('filter', filter, 'table', true)
filter = filter or {}
local bufnr = filter.bufnr
local client_id = filter.client_id
local var = make_enable_var(feature)
local client_var = make_enable_var(feature, client_id)
return vim.F.if_nil(client_id and vim.g[client_var], vim.g[var])
and vim.F.if_nil(bufnr and vim.b[bufnr][var], vim.g[var])
end
---@param feature 'semantic_tokens'
---@param enable? boolean
---@param filter? vim.lsp.enable.Filter
function M._enable(feature, enable, filter)
vim.validate('feature', feature, 'string')
vim.validate('enable', enable, 'boolean', true)
vim.validate('filter', filter, 'table', true)
enable = enable == nil or enable
filter = filter or {}
local bufnr = filter.bufnr
local client_id = filter.client_id
assert(
not (bufnr and client_id),
'Only one of `bufnr` or `client_id` filters can be specified at a time.'
)
local var = make_enable_var(feature)
local client_var = make_enable_var(feature, client_id)
if client_id then
if enable == vim.g[var] then
vim.g[client_var] = nil
else
vim.g[client_var] = enable
end
elseif bufnr then
if enable == vim.g[var] then
vim.b[bufnr][var] = nil
else
vim.b[bufnr][var] = enable
end
else
vim.g[var] = enable
for _, it_bufnr in ipairs(api.nvim_list_bufs()) do
if api.nvim_buf_is_loaded(it_bufnr) and vim.b[it_bufnr][var] == enable then
vim.b[it_bufnr][var] = nil
end
end
for _, it_client in ipairs(vim.lsp.get_clients()) do
local it_client_var = make_enable_var(feature, it_client.id)
if vim.g[it_client_var] and vim.g[it_client_var] == enable then
vim.g[it_client_var] = nil
end
end
end
end
M._get_line_byte_from_position = get_line_byte_from_position
---@nodoc
---@type table<integer,integer>
M.buf_versions = setmetatable({}, {
__index = function(t, bufnr)
return rawget(t, bufnr) or 0
end,
})
return M