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neovim/runtime/doc/lsp.txt
Gregory Anders 91e5dcae3d
docs(lsp): add examples to lsp-quickstart for completion and autoformatting (#29497) 
Auto-completion and auto-formatting are common (though certainly not
universal) features that many users want. We can document how to
accomplish this in lsp-quickstart so that users that do want these
features can easily find examples of how to configure them.
2024-07-06 11:41:55 +02:00

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*lsp.txt* LSP
NVIM REFERENCE MANUAL
LSP client/framework *lsp* *LSP*
Nvim supports the Language Server Protocol (LSP), which means it acts as
a client to LSP servers and includes a Lua framework `vim.lsp` for building
enhanced LSP tools.
https://microsoft.github.io/language-server-protocol/
LSP facilitates features like go-to-definition, find references, hover,
completion, rename, format, refactor, etc., using semantic whole-project
analysis (unlike |ctags|).
Type |gO| to see the table of contents.
==============================================================================
QUICKSTART *lsp-quickstart*
Nvim provides an LSP client, but the servers are provided by third parties.
Follow these steps to get LSP features:
1. Install language servers using your package manager or by following the
upstream installation instructions. You can find language servers here:
https://microsoft.github.io/language-server-protocol/implementors/servers/
2. Use |vim.lsp.start()| to start the LSP server (or attach to an existing
one) when a file is opened. Example: >lua
-- Create an event handler for the FileType autocommand
vim.api.nvim_create_autocmd('FileType', {
-- This handler will fire when the buffer's 'filetype' is "python"
pattern = 'python',
callback = function(args)
vim.lsp.start({
name = 'my-server-name',
cmd = {'name-of-language-server-executable', '--option', 'arg1', 'arg2'},
-- Set the "root directory" to the parent directory of the file in the
-- current buffer (`args.buf`) that contains either a "setup.py" or a
-- "pyproject.toml" file. Files that share a root directory will reuse
-- the connection to the same LSP server.
root_dir = vim.fs.root(args.buf, {'setup.py', 'pyproject.toml'}),
})
end,
})
<
3. Check that the buffer is attached to the server: >vim
:checkhealth lsp
4. (Optional) Configure keymaps and autocommands to use LSP features. |lsp-config|
*lsp-defaults*
When the Nvim LSP client starts it enables diagnostics |vim.diagnostic| (see
|vim.diagnostic.config()| to customize). It also sets various default options,
listed below, if (1) the language server supports the functionality and (2)
the options are empty or were set by the builtin runtime (ftplugin) files. The
options are not restored when the LSP client is stopped or detached.
- 'omnifunc' is set to |vim.lsp.omnifunc()|, use |i_CTRL-X_CTRL-O| to trigger
completion.
- 'tagfunc' is set to |vim.lsp.tagfunc()|. This enables features like
go-to-definition, |:tjump|, and keymaps like |CTRL-]|, |CTRL-W_]|,
|CTRL-W_}| to utilize the language server.
- 'formatexpr' is set to |vim.lsp.formatexpr()|, so you can format lines via
|gq| if the language server supports it.
- To opt out of this use |gw| instead of gq, or clear 'formatexpr' on |LspAttach|.
- |K| is mapped to |vim.lsp.buf.hover()| unless |'keywordprg'| is customized or
a custom keymap for `K` exists.
*grr* *gra* *grn* *i_CTRL-S*
Some keymaps are created unconditionally when Nvim starts:
- "grn" is mapped in Normal mode to |vim.lsp.buf.rename()|
- "gra" is mapped in Normal and Visual mode to |vim.lsp.buf.code_action()|
- "grr" is mapped in Normal mode to |vim.lsp.buf.references()|
- CTRL-S is mapped in Insert mode to |vim.lsp.buf.signature_help()|
If not wanted, these keymaps can be removed at any time using
|vim.keymap.del()| or |:unmap| (see also |gr-default|).
*lsp-defaults-disable*
To override or delete any of the above defaults, set or unset the options on
|LspAttach|: >lua
vim.api.nvim_create_autocmd('LspAttach', {
callback = function(args)
vim.bo[args.buf].formatexpr = nil
vim.bo[args.buf].omnifunc = nil
vim.keymap.del('n', 'K', { buffer = args.buf })
end,
})
<
*lsp-config*
To use other LSP features, set keymaps and other buffer options on
|LspAttach|. Not all language servers provide the same capabilities. Use
capability checks to ensure you only use features supported by the language
server. Example: >lua
vim.api.nvim_create_autocmd('LspAttach', {
callback = function(args)
local client = vim.lsp.get_client_by_id(args.data.client_id)
if client.supports_method('textDocument/implementation') then
-- Create a keymap for vim.lsp.buf.implementation
end
if client.supports_method('textDocument/completion') then
-- Enable auto-completion
vim.lsp.completion.enable(true, client.id, args.buf, {autotrigger = true})
end
if client.supports_method('textDocument/formatting') then
-- Format the current buffer on save
vim.api.nvim_create_autocmd('BufWritePre', {
buffer = args.buf,
callback = function()
vim.lsp.buf.format({bufnr = args.buf, id = client.id})
end,
})
end,
})
<
To learn what capabilities are available you can run the following command in
a buffer with a started LSP client: >vim
:lua =vim.lsp.get_clients()[1].server_capabilities
Full list of features provided by default can be found in |lsp-buf|.
================================================================================
FAQ *lsp-faq*
- Q: How to force-reload LSP?
- A: Stop all clients, then reload the buffer. >vim
:lua vim.lsp.stop_client(vim.lsp.get_clients())
:edit
- Q: Why isn't completion working?
- A: In the buffer where you want to use LSP, check that 'omnifunc' is set to
"v:lua.vim.lsp.omnifunc": `:verbose set omnifunc?`
- Some other plugin may be overriding the option. To avoid that you could
set the option in an |after-directory| ftplugin, e.g.
"after/ftplugin/python.vim".
- Q: How do I run a request synchronously (e.g. for formatting on file save)?
- A: Check if the function has an `async` parameter and set the value to
false. E.g. code formatting: >vim
" Auto-format *.rs (rust) files prior to saving them
" (async = false is the default for format)
autocmd BufWritePre *.rs lua vim.lsp.buf.format({ async = false })
<
*lsp-vs-treesitter*
- Q: How do LSP and Treesitter compare?
- A: LSP requires a client and language server. The language server uses
semantic analysis to understand code at a project level. This provides
language servers with the ability to rename across files, find
definitions in external libraries and more.
Treesitter is a language parsing library that provides excellent tools
for incrementally parsing text and handling errors. This makes it a great
fit for editors to understand the contents of the current file for things
like syntax highlighting, simple goto-definitions, scope analysis and
more.
LSP and Treesitter are both great tools for editing and inspecting code.
================================================================================
LSP API *lsp-api*
LSP core API is described at |lsp-core|. Those are the core functions for
creating and managing clients.
The `vim.lsp.buf_…` functions perform operations for all LSP clients attached
to the given buffer. |lsp-buf|
LSP request/response handlers are implemented as Lua functions (see
|lsp-handler|).
*lsp-method*
Requests and notifications defined by the LSP specification are referred to as
"LSP methods". The Nvim LSP client provides default handlers in the global
|vim.lsp.handlers| table, you can list them with this command: >vim
:lua vim.print(vim.tbl_keys(vim.lsp.handlers))
<
They are also listed below. Note that handlers depend on server support: they
won't run if your server doesn't support them.
- callHierarchy/incomingCalls
- callHierarchy/outgoingCalls
- textDocument/codeAction
- textDocument/completion
- textDocument/declaration*
- textDocument/definition
- textDocument/diagnostic
- textDocument/documentHighlight
- textDocument/documentSymbol
- textDocument/formatting
- textDocument/hover
- textDocument/implementation*
- textDocument/inlayHint
- textDocument/prepareTypeHierarchy
- textDocument/publishDiagnostics
- textDocument/rangeFormatting
- textDocument/rangesFormatting
- textDocument/references
- textDocument/rename
- textDocument/semanticTokens/full
- textDocument/semanticTokens/full/delta
- textDocument/signatureHelp
- textDocument/typeDefinition*
- typeHierarchy/subtypes
- typeHierarchy/supertypes
- window/logMessage
- window/showMessage
- window/showDocument
- window/showMessageRequest
- workspace/applyEdit
- workspace/configuration
- workspace/executeCommand
- workspace/inlayHint/refresh
- workspace/symbol
- workspace/workspaceFolders
*lsp-handler*
LSP handlers are functions that handle |lsp-response|s to requests made by Nvim
to the server. (Notifications, as opposed to requests, are fire-and-forget:
there is no response, so they can't be handled. |lsp-notification|)
Each response handler has this signature: >
function(err, result, ctx, config)
<
Parameters: ~
• {err} (`table|nil`) Error info dict, or `nil` if the request
completed.
• {result} (`Result|Params|nil`) `result` key of the |lsp-response| or
`nil` if the request failed.
• {ctx} (`table`) Table of calling state associated with the
handler, with these keys:
• {method} (`string`) |lsp-method| name.
• {client_id} (`number`) |vim.lsp.Client| identifier.
• {bufnr} (`Buffer`) Buffer handle.
• {params} (`table|nil`) Request parameters table.
• {version} (`number`) Document version at time of
request. Handlers can compare this to the
current document version to check if the
response is "stale". See also |b:changedtick|.
• {config} (`table`) Handler-defined configuration table, which allows
users to customize handler behavior.
For an example, see:
|vim.lsp.diagnostic.on_publish_diagnostics()|
To configure a particular |lsp-handler|, see:
|lsp-handler-configuration|
Returns: ~
Two values `result, err` where `err` is shaped like an RPC error: >
{ code, message, data? }
< You can use |vim.lsp.rpc.rpc_response_error()| to create this object.
*lsp-handler-configuration*
To configure the behavior of a builtin |lsp-handler|, the convenient method
|vim.lsp.with()| is provided for users.
To configure the behavior of |vim.lsp.diagnostic.on_publish_diagnostics()|,
consider the following example, where a new |lsp-handler| is created using
|vim.lsp.with()| that no longer generates signs for the diagnostics: >lua
vim.lsp.handlers["textDocument/publishDiagnostics"] = vim.lsp.with(
vim.lsp.diagnostic.on_publish_diagnostics, {
-- Disable signs
signs = false,
}
)
<
To enable signs, use |vim.lsp.with()| again to create and assign a new
|lsp-handler| to |vim.lsp.handlers| for the associated method: >lua
vim.lsp.handlers["textDocument/publishDiagnostics"] = vim.lsp.with(
vim.lsp.diagnostic.on_publish_diagnostics, {
-- Enable signs
signs = true,
}
)
<
To configure a handler on a per-server basis, you can use the {handlers} key
for |vim.lsp.start_client()| >lua
vim.lsp.start_client {
..., -- Other configuration omitted.
handlers = {
["textDocument/publishDiagnostics"] = vim.lsp.with(
vim.lsp.diagnostic.on_publish_diagnostics, {
-- Disable virtual_text
virtual_text = false,
}
),
},
}
<
or if using "nvim-lspconfig", you can use the {handlers} key of `setup()`:
>lua
require('lspconfig').rust_analyzer.setup {
handlers = {
["textDocument/publishDiagnostics"] = vim.lsp.with(
vim.lsp.diagnostic.on_publish_diagnostics, {
-- Disable virtual_text
virtual_text = false
}
),
}
}
<
Some handlers do not have an explicitly named handler function (such as
||vim.lsp.diagnostic.on_publish_diagnostics()|). To override these, first
create a reference to the existing handler: >lua
local on_references = vim.lsp.handlers["textDocument/references"]
vim.lsp.handlers["textDocument/references"] = vim.lsp.with(
on_references, {
-- Use location list instead of quickfix list
loclist = true,
}
)
<
*lsp-handler-resolution*
Handlers can be set by:
- Setting a field in vim.lsp.handlers. *vim.lsp.handlers*
vim.lsp.handlers is a global table that contains the default mapping of
|lsp-method| names to |lsp-handlers|. To override the handler for the
`"textDocument/definition"` method: >lua
vim.lsp.handlers["textDocument/definition"] = my_custom_default_definition
<
- The {handlers} parameter of |vim.lsp.start()|. This sets the default
|lsp-handler| for the server being started. Example: >lua
vim.lsp.start {
..., -- Other configuration omitted.
handlers = {
["textDocument/definition"] = my_custom_server_definition
},
}
- The {handler} parameter of |vim.lsp.buf_request_all()|. This sets
the |lsp-handler| ONLY for the given request(s). Example: >lua
vim.lsp.buf_request_all(
0,
"textDocument/definition",
my_request_params,
my_handler
)
<
In summary, the |lsp-handler| will be chosen based on the current |lsp-method|
in the following order:
1. Handler passed to |vim.lsp.buf_request_all()|, if any.
2. Handler defined in |vim.lsp.start()|, if any.
3. Handler defined in |vim.lsp.handlers|, if any.
*vim.lsp.log_levels*
Log levels are defined in |vim.log.levels|
VIM.LSP.PROTOCOL *vim.lsp.protocol*
Module `vim.lsp.protocol` defines constants dictated by the LSP specification,
and helper functions for creating protocol-related objects.
https://github.com/microsoft/language-server-protocol/raw/gh-pages/_specifications/specification-3-14.md
For example `vim.lsp.protocol.ErrorCodes` allows reverse lookup by number or
name: >lua
vim.lsp.protocol.TextDocumentSyncKind.Full == 1
vim.lsp.protocol.TextDocumentSyncKind[1] == "Full"
<
*lsp-response*
LSP response shape:
https://microsoft.github.io/language-server-protocol/specifications/specification-current/#responseMessage
*lsp-notification*
LSP notification shape:
https://microsoft.github.io/language-server-protocol/specifications/specification-current/#notificationMessage
================================================================================
LSP HIGHLIGHT *lsp-highlight*
Reference Highlights:
Highlight groups that are meant to be used by |vim.lsp.buf.document_highlight()|.
You can see more about the differences in types here:
https://microsoft.github.io/language-server-protocol/specification#textDocument_documentHighlight
*hl-LspReferenceText*
LspReferenceText used for highlighting "text" references
*hl-LspReferenceRead*
LspReferenceRead used for highlighting "read" references
*hl-LspReferenceWrite*
LspReferenceWrite used for highlighting "write" references
*hl-LspInlayHint*
LspInlayHint used for highlighting inlay hints
*lsp-highlight-codelens*
Highlight groups related to |lsp-codelens| functionality.
*hl-LspCodeLens*
LspCodeLens
Used to color the virtual text of the codelens. See
|nvim_buf_set_extmark()|.
LspCodeLensSeparator *hl-LspCodeLensSeparator*
Used to color the separator between two or more code lenses.
*lsp-highlight-signature*
Highlight groups related to |vim.lsp.handlers.signature_help()|.
*hl-LspSignatureActiveParameter*
LspSignatureActiveParameter
Used to highlight the active parameter in the signature help. See
|vim.lsp.handlers.signature_help()|.
------------------------------------------------------------------------------
LSP SEMANTIC HIGHLIGHTS *lsp-semantic-highlight*
When available, the LSP client highlights code using |lsp-semantic_tokens|,
which are another way that LSP servers can provide information about source
code. Note that this is in addition to treesitter syntax highlighting;
semantic highlighting does not replace syntax highlighting.
The server will typically provide one token per identifier in the source code.
The token will have a `type` such as "function" or "variable", and 0 or more
`modifier`s such as "readonly" or "deprecated." The standard types and
modifiers are described here:
https://microsoft.github.io/language-server-protocol/specification/#textDocument_semanticTokens
LSP servers may also use off-spec types and modifiers.
The LSP client adds one or more highlights for each token. The highlight
groups are derived from the token's type and modifiers:
• `@lsp.type.<type>.<ft>` for the type
• `@lsp.mod.<mod>.<ft>` for each modifier
• `@lsp.typemod.<type>.<mod>.<ft>` for each modifier
Use |:Inspect| to view the highlights for a specific token. Use |:hi| or
|nvim_set_hl()| to change the appearance of semantic highlights: >vim
hi @lsp.type.function guifg=Yellow " function names are yellow
hi @lsp.type.variable.lua guifg=Green " variables in lua are green
hi @lsp.mod.deprecated gui=strikethrough " deprecated is crossed out
hi @lsp.typemod.function.async guifg=Blue " async functions are blue
<
The value |vim.highlight.priorities|`.semantic_tokens` is the priority of the
`@lsp.type.*` highlights. The `@lsp.mod.*` and `@lsp.typemod.*` highlights
have priorities one and two higher, respectively.
You can disable semantic highlights by clearing the highlight groups: >lua
-- Hide semantic highlights for functions
vim.api.nvim_set_hl(0, '@lsp.type.function', {})
-- Hide all semantic highlights
for _, group in ipairs(vim.fn.getcompletion("@lsp", "highlight")) do
vim.api.nvim_set_hl(0, group, {})
end
<
You probably want these inside a |ColorScheme| autocommand.
Use |LspTokenUpdate| and |vim.lsp.semantic_tokens.highlight_token()| for more
complex highlighting.
The following is a list of standard captures used in queries for Nvim,
highlighted according to the current colorscheme (use |:Inspect| on one to see
the exact definition):
@lsp.type.class Identifiers that declare or reference a class type
@lsp.type.comment Tokens that represent a comment
@lsp.type.decorator Identifiers that declare or reference decorators and annotations
@lsp.type.enum Identifiers that declare or reference an enumeration type
@lsp.type.enumMember Identifiers that declare or reference an enumeration property, constant, or member
@lsp.type.event Identifiers that declare an event property
@lsp.type.function Identifiers that declare a function
@lsp.type.interface Identifiers that declare or reference an interface type
@lsp.type.keyword Tokens that represent a language keyword
@lsp.type.macro Identifiers that declare a macro
@lsp.type.method Identifiers that declare a member function or method
@lsp.type.modifier Tokens that represent a modifier
@lsp.type.namespace Identifiers that declare or reference a namespace, module, or package
@lsp.type.number Tokens that represent a number literal
@lsp.type.operator Tokens that represent an operator
@lsp.type.parameter Identifiers that declare or reference a function or method parameters
@lsp.type.property Identifiers that declare or reference a member property, member field, or member variable
@lsp.type.regexp Tokens that represent a regular expression literal
@lsp.type.string Tokens that represent a string literal
@lsp.type.struct Identifiers that declare or reference a struct type
@lsp.type.type Identifiers that declare or reference a type that is not covered above
@lsp.type.typeParameter Identifiers that declare or reference a type parameter
@lsp.type.variable Identifiers that declare or reference a local or global variable
@lsp.mod.abstract Types and member functions that are abstract
@lsp.mod.async Functions that are marked async
@lsp.mod.declaration Declarations of symbols
@lsp.mod.defaultLibrary Symbols that are part of the standard library
@lsp.mod.definition Definitions of symbols, for example, in header files
@lsp.mod.deprecated Symbols that should no longer be used
@lsp.mod.documentation Occurrences of symbols in documentation
@lsp.mod.modification Variable references where the variable is assigned to
@lsp.mod.readonly Readonly variables and member fields (constants)
@lsp.mod.static Class members (static members)
==============================================================================
EVENTS *lsp-events*
LspAttach *LspAttach*
After an LSP client attaches to a buffer. The |autocmd-pattern| is the
name of the buffer. When used from Lua, the client ID is passed to the
callback in the "data" table. Example: >lua
vim.api.nvim_create_autocmd("LspAttach", {
callback = function(args)
local bufnr = args.buf
local client = vim.lsp.get_client_by_id(args.data.client_id)
if client.supports_method("textDocument/completion") then
vim.bo[bufnr].omnifunc = "v:lua.vim.lsp.omnifunc"
end
if client.supports_method("textDocument/definition") then
vim.bo[bufnr].tagfunc = "v:lua.vim.lsp.tagfunc"
end
end,
})
<
LspDetach *LspDetach*
Just before an LSP client detaches from a buffer. The |autocmd-pattern|
is the name of the buffer. When used from Lua, the client ID is passed
to the callback in the "data" table. Example: >lua
vim.api.nvim_create_autocmd("LspDetach", {
callback = function(args)
local client = vim.lsp.get_client_by_id(args.data.client_id)
-- Do something with the client
vim.cmd("setlocal tagfunc< omnifunc<")
end,
})
<
LspNotify *LspNotify*
This event is triggered after each successful notification sent to an
LSP server.
When used from Lua, the client_id, LSP method, and parameters are sent
in the "data" table. Example: >lua
vim.api.nvim_create_autocmd('LspNotify', {
callback = function(args)
local bufnr = args.buf
local client_id = args.data.client_id
local method = args.data.method
local params = args.data.params
-- do something with the notification
if method == 'textDocument/...' then
update_buffer(bufnr)
end
end,
})
<
LspProgress *LspProgress*
Upon receipt of a progress notification from the server. Notifications can
be polled from a `progress` ring buffer of a |vim.lsp.Client| or use
|vim.lsp.status()| to get an aggregate message.
If the server sends a "work done progress", the `pattern` is set to `kind`
(one of `begin`, `report` or `end`).
When used from Lua, the event contains a `data` table with `client_id` and
`params` properties. `params` will contain the request params sent by the
server (see `lsp.ProgressParams`).
Example: >vim
autocmd LspProgress * redrawstatus
<
LspRequest *LspRequest*
For each request sent to an LSP server, this event is triggered for
every change to the request's status. The status can be one of
`pending`, `complete`, or `cancel` and is sent as the {type} on the
"data" table passed to the callback function.
It triggers when the initial request is sent ({type} == `pending`) and
when the LSP server responds ({type} == `complete`). If a cancellation
is requested using `client.cancel_request(request_id)`, then this event
will trigger with {type} == `cancel`.
When used from Lua, the client ID, request ID, and request are sent in
the "data" table. See {requests} in |vim.lsp.Client| for details on the
{request} value. If the request type is `complete`, the request will be
deleted from the client's pending requests table immediately after
calling the event's callbacks. Example: >lua
vim.api.nvim_create_autocmd('LspRequest', {
callback = function(args)
local bufnr = args.buf
local client_id = args.data.client_id
local request_id = args.data.request_id
local request = args.data.request
if request.type == 'pending' then
-- do something with pending requests
track_pending(client_id, bufnr, request_id, request)
elseif request.type == 'cancel' then
-- do something with pending cancel requests
track_canceling(client_id, bufnr, request_id, request)
elseif request.type == 'complete' then
-- do something with finished requests. this pending
-- request entry is about to be removed since it is complete
track_finish(client_id, bufnr, request_id, request)
end
end,
})
<
LspTokenUpdate *LspTokenUpdate*
When a visible semantic token is sent or updated by the LSP server, or
when an existing token becomes visible for the first time. The
|autocmd-pattern| is the name of the buffer. When used from Lua, the
token and client ID are passed to the callback in the "data" table. The
token fields are documented in |vim.lsp.semantic_tokens.get_at_pos()|.
Example:
>lua
vim.api.nvim_create_autocmd('LspTokenUpdate', {
callback = function(args)
local token = args.data.token
if token.type == 'variable' and not token.modifiers.readonly then
vim.lsp.semantic_tokens.highlight_token(
token, args.buf, args.data.client_id, 'MyMutableVariableHighlight'
)
end
end,
})
<
Note: doing anything other than calling
|vim.lsp.semantic_tokens.highlight_token()| is considered experimental.
==============================================================================
Lua module: vim.lsp *lsp-core*
buf_attach_client({bufnr}, {client_id}) *vim.lsp.buf_attach_client()*
Implements the `textDocument/did…` notifications required to track a
buffer for any language server.
Without calling this, the server won't be notified of changes to a buffer.
Parameters: ~
• {bufnr} (`integer`) Buffer handle, or 0 for current
• {client_id} (`integer`) Client id
Return: ~
(`boolean`) success `true` if client was attached successfully;
`false` otherwise
buf_detach_client({bufnr}, {client_id}) *vim.lsp.buf_detach_client()*
Detaches client from the specified buffer. Note: While the server is
notified that the text document (buffer) was closed, it is still able to
send notifications should it ignore this notification.
Parameters: ~
• {bufnr} (`integer`) Buffer handle, or 0 for current
• {client_id} (`integer`) Client id
buf_is_attached({bufnr}, {client_id}) *vim.lsp.buf_is_attached()*
Checks if a buffer is attached for a particular client.
Parameters: ~
• {bufnr} (`integer`) Buffer handle, or 0 for current
• {client_id} (`integer`) the client id
buf_notify({bufnr}, {method}, {params}) *vim.lsp.buf_notify()*
Send a notification to a server
Parameters: ~
• {bufnr} (`integer?`) The number of the buffer
• {method} (`string`) Name of the request method
• {params} (`any`) Arguments to send to the server
Return: ~
(`boolean`) success true if any client returns true; false otherwise
*vim.lsp.buf_request_all()*
buf_request_all({bufnr}, {method}, {params}, {handler})
Sends an async request for all active clients attached to the buffer and
executes the `handler` callback with the combined result.
Parameters: ~
• {bufnr} (`integer`) Buffer handle, or 0 for current.
• {method} (`string`) LSP method name
• {params} (`table?`) Parameters to send to the server
• {handler} (`function`) Handler called after all requests are
completed. Server results are passed as a
`client_id:result` map.
Return: ~
(`function`) cancel Function that cancels all requests.
*vim.lsp.buf_request_sync()*
buf_request_sync({bufnr}, {method}, {params}, {timeout_ms})
Sends a request to all server and waits for the response of all of them.
Calls |vim.lsp.buf_request_all()| but blocks Nvim while awaiting the
result. Parameters are the same as |vim.lsp.buf_request_all()| but the
result is different. Waits a maximum of {timeout_ms}.
Parameters: ~
• {bufnr} (`integer`) Buffer handle, or 0 for current.
• {method} (`string`) LSP method name
• {params} (`table?`) Parameters to send to the server
• {timeout_ms} (`integer?`, default: `1000`) Maximum time in
milliseconds to wait for a result.
Return (multiple): ~
(`table<integer, {error: lsp.ResponseError?, result: any}>?`) result
Map of client_id:request_result.
(`string?`) err On timeout, cancel, or error, `err` is a string
describing the failure reason, and `result` is nil.
client_is_stopped({client_id}) *vim.lsp.client_is_stopped()*
Checks whether a client is stopped.
Parameters: ~
• {client_id} (`integer`)
Return: ~
(`boolean`) stopped true if client is stopped, false otherwise.
commands *vim.lsp.commands*
Registry for client side commands. This is an extension point for plugins
to handle custom commands which are not part of the core language server
protocol specification.
The registry is a table where the key is a unique command name, and the
value is a function which is called if any LSP action (code action, code
lenses, ...) triggers the command.
If a LSP response contains a command for which no matching entry is
available in this registry, the command will be executed via the LSP
server using `workspace/executeCommand`.
The first argument to the function will be the `Command`: Command title:
String command: String arguments?: any[]
The second argument is the `ctx` of |lsp-handler|
formatexpr({opts}) *vim.lsp.formatexpr()*
Provides an interface between the built-in client and a `formatexpr`
function.
Currently only supports a single client. This can be set via
`setlocal formatexpr=v:lua.vim.lsp.formatexpr()` but will typically or in
`on_attach` via
`vim.bo[bufnr].formatexpr = 'v:lua.vim.lsp.formatexpr(#{timeout_ms:250})'`.
Parameters: ~
• {opts} (`table?`) A table with the following fields:
• {timeout_ms} (`integer`, default: 500ms) The timeout period
for the formatting request..
*vim.lsp.get_buffers_by_client_id()*
get_buffers_by_client_id({client_id})
Returns list of buffers attached to client_id.
Parameters: ~
• {client_id} (`integer`) client id
Return: ~
(`integer[]`) buffers list of buffer ids
get_client_by_id({client_id}) *vim.lsp.get_client_by_id()*
Gets a client by id, or nil if the id is invalid. The returned client may
not yet be fully initialized.
Parameters: ~
• {client_id} (`integer`) client id
Return: ~
(`vim.lsp.Client?`) client rpc object
get_clients({filter}) *vim.lsp.get_clients()*
Get active clients.
Parameters: ~
• {filter} (`table?`) Key-value pairs used to filter the returned
clients.
• {id}? (`integer`) Only return clients with the given id
• {bufnr}? (`integer`) Only return clients attached to this
buffer
• {name}? (`string`) Only return clients with the given name
• {method}? (`string`) Only return clients supporting the
given method
Return: ~
(`vim.lsp.Client[]`) List of |vim.lsp.Client| objects
get_log_path() *vim.lsp.get_log_path()*
Gets the path of the logfile used by the LSP client.
Return: ~
(`string`) path to log file
omnifunc({findstart}, {base}) *vim.lsp.omnifunc()*
Implements 'omnifunc' compatible LSP completion.
Parameters: ~
• {findstart} (`integer`) 0 or 1, decides behavior
• {base} (`integer`) findstart=0, text to match against
Return: ~
(`integer|table`) Decided by {findstart}:
• findstart=0: column where the completion starts, or -2 or -3
• findstart=1: list of matches (actually just calls |complete()|)
See also: ~
• |complete-functions|
• |complete-items|
• |CompleteDone|
set_log_level({level}) *vim.lsp.set_log_level()*
Sets the global log level for LSP logging.
Levels by name: "TRACE", "DEBUG", "INFO", "WARN", "ERROR", "OFF"
Level numbers begin with "TRACE" at 0
Use `lsp.log_levels` for reverse lookup.
Parameters: ~
• {level} (`integer|string`) the case insensitive level name or number
See also: ~
• |vim.lsp.log_levels|
start({config}, {opts}) *vim.lsp.start()*
Create a new LSP client and start a language server or reuses an already
running client if one is found matching `name` and `root_dir`. Attaches
the current buffer to the client.
Example: >lua
vim.lsp.start({
name = 'my-server-name',
cmd = {'name-of-language-server-executable'},
root_dir = vim.fs.root(0, {'pyproject.toml', 'setup.py'}),
})
<
See |vim.lsp.start_client()| for all available options. The most important
are:
• `name` arbitrary name for the LSP client. Should be unique per language
server.
• `cmd` command string[] or function, described at
|vim.lsp.start_client()|.
• `root_dir` path to the project root. By default this is used to decide
if an existing client should be re-used. The example above uses
|vim.fs.root()| and |vim.fs.dirname()| to detect the root by traversing
the file system upwards starting from the current directory until either
a `pyproject.toml` or `setup.py` file is found.
• `workspace_folders` list of `{ uri:string, name: string }` tables
specifying the project root folders used by the language server. If
`nil` the property is derived from `root_dir` for convenience.
Language servers use this information to discover metadata like the
dependencies of your project and they tend to index the contents within
the project folder.
To ensure a language server is only started for languages it can handle,
make sure to call |vim.lsp.start()| within a |FileType| autocmd. Either
use |:au|, |nvim_create_autocmd()| or put the call in a
`ftplugin/<filetype_name>.lua` (See |ftplugin-name|)
Parameters: ~
• {config} (`vim.lsp.ClientConfig`) Configuration for the server. See
|vim.lsp.ClientConfig|.
• {opts} (`table?`) Optional keyword arguments
• {reuse_client}?
(`fun(client: vim.lsp.Client, config: vim.lsp.ClientConfig): boolean`)
Predicate used to decide if a client should be re-used.
Used on all running clients. The default implementation
re-uses a client if name and root_dir matches.
• {bufnr}? (`integer`) Buffer handle to attach to if
starting or re-using a client (0 for current).
• {silent}? (`boolean`) Suppress error reporting if the LSP
server fails to start (default false).
Return: ~
(`integer?`) client_id
start_client({config}) *vim.lsp.start_client()*
Starts and initializes a client with the given configuration.
Parameters: ~
• {config} (`vim.lsp.ClientConfig`) Configuration for the server. See
|vim.lsp.ClientConfig|.
Return (multiple): ~
(`integer?`) client_id |vim.lsp.get_client_by_id()| Note: client may
not be fully initialized. Use `on_init` to do any actions once the
client has been initialized.
(`string?`) Error message, if any
status() *vim.lsp.status()*
Consumes the latest progress messages from all clients and formats them as
a string. Empty if there are no clients or if no new messages
Return: ~
(`string`)
stop_client({client_id}, {force}) *vim.lsp.stop_client()*
Stops a client(s).
You can also use the `stop()` function on a |vim.lsp.Client| object. To
stop all clients: >lua
vim.lsp.stop_client(vim.lsp.get_clients())
<
By default asks the server to shutdown, unless stop was requested already
for this client, then force-shutdown is attempted.
Parameters: ~
• {client_id} (`integer|integer[]|vim.lsp.Client[]`) id, list of id's,
or list of |vim.lsp.Client| objects
• {force} (`boolean?`) shutdown forcefully
tagfunc({pattern}, {flags}) *vim.lsp.tagfunc()*
Provides an interface between the built-in client and 'tagfunc'.
When used with normal mode commands (e.g. |CTRL-]|) this will invoke the
"textDocument/definition" LSP method to find the tag under the cursor.
Otherwise, uses "workspace/symbol". If no results are returned from any
LSP servers, falls back to using built-in tags.
Parameters: ~
• {pattern} (`string`) Pattern used to find a workspace symbol
• {flags} (`string`) See |tag-function|
Return: ~
(`table[]`) tags A list of matching tags
with({handler}, {override_config}) *vim.lsp.with()*
Function to manage overriding defaults for LSP handlers.
Parameters: ~
• {handler} (`lsp.Handler`) See |lsp-handler|
• {override_config} (`table`) Table containing the keys to override
behavior of the {handler}
==============================================================================
Lua module: vim.lsp.client *lsp-client*
*vim.lsp.Client*
Fields: ~
• {id} (`integer`) The id allocated to the client.
• {name} (`string`) If a name is specified on creation,
that will be used. Otherwise it is just the
client id. This is used for logs and messages.
• {rpc} (`vim.lsp.rpc.PublicClient`) RPC client
object, for low level interaction with the
client. See |vim.lsp.rpc.start()|.
• {offset_encoding} (`string`) The encoding used for communicating
with the server. You can modify this in the
`config`'s `on_init` method before text is
sent to the server.
• {handlers} (`table<string,lsp.Handler>`) The handlers
used by the client as described in
|lsp-handler|.
• {requests} (`table<integer,{ type: string, bufnr: integer, method: string}>`)
The current pending requests in flight to the
server. Entries are key-value pairs with the
key being the request id while the value is a
table with `type`, `bufnr`, and `method`
key-value pairs. `type` is either "pending"
for an active request, or "cancel" for a
cancel request. It will be "complete"
ephemerally while executing |LspRequest|
autocmds when replies are received from the
server.
• {config} (`vim.lsp.ClientConfig`) copy of the table
that was passed by the user to
|vim.lsp.start_client()|. See
|vim.lsp.ClientConfig|.
• {server_capabilities} (`lsp.ServerCapabilities?`) Response from the
server sent on `initialize` describing the
server's capabilities.
• {progress} (`vim.lsp.Client.Progress`) A ring buffer
(|vim.ringbuf()|) containing progress messages
sent by the server. See
|vim.lsp.Client.Progress|.
• {initialized} (`true?`)
• {workspace_folders} (`lsp.WorkspaceFolder[]?`) The workspace
folders configured in the client when the
server starts. This property is only available
if the client supports workspace folders. It
can be `null` if the client supports workspace
folders but none are configured.
• {root_dir} (`string?`)
• {attached_buffers} (`table<integer,true>`)
• {commands} (`table<string,fun(command: lsp.Command, ctx: table)>`)
Table of command name to function which is
called if any LSP action (code action, code
lenses, ...) triggers the command. Client
commands take precedence over the global
command registry.
• {settings} (`table`) Map with language server specific
settings. These are returned to the language
server if requested via
`workspace/configuration`. Keys are
case-sensitive.
• {flags} (`table`) A table with flags for the client.
The current (experimental) flags are:
• {allow_incremental_sync}? (`boolean`,
default: `true`) Allow using incremental
sync for buffer edits
• {debounce_text_changes} (`integer`, default:
`150`) Debounce `didChange` notifications to
the server by the given number in
milliseconds. No debounce occurs if `nil`.
• {exit_timeout} (`integer|false`, default:
`false`) Milliseconds to wait for server to
exit cleanly after sending the "shutdown"
request before sending kill -15. If set to
false, nvim exits immediately after sending
the "shutdown" request to the server.
• {get_language_id} (`fun(bufnr: integer, filetype: string): string`)
• {capabilities} (`lsp.ClientCapabilities`) The capabilities
provided by the client (editor or tool)
• {dynamic_capabilities} (`lsp.DynamicCapabilities`)
• {request} (`fun(method: string, params: table?, handler: lsp.Handler?, bufnr: integer?): boolean, integer?`)
Sends a request to the server. This is a thin
wrapper around {client.rpc.request} with some
additional checking. If {handler} is not
specified and if there's no respective global
handler, then an error will occur. Returns:
{status}, {client_id}?. {status} is a boolean
indicating if the notification was successful.
If it is `false`, then it will always be
`false` (the client has shutdown). If {status}
is `true`, the function returns {request_id}
as the second result. You can use this with
`client.cancel_request(request_id)` to cancel
the request.
• {request_sync} (`fun(method: string, params: table?, timeout_ms: integer?, bufnr: integer): {err: lsp.ResponseError?, result:any}?, string?`)
err # a dictionary, where
• {notify} (`fun(method: string, params: table?): boolean`)
Sends a notification to an LSP server.
Returns: a boolean to indicate if the
notification was successful. If it is false,
then it will always be false (the client has
shutdown).
• {cancel_request} (`fun(id: integer): boolean`) Cancels a
request with a given request id. Returns: same
as `notify()`.
• {stop} (`fun(force?: boolean)`) Stops a client,
optionally with force. By default, it will
just ask the server to shutdown without force.
If you request to stop a client which has
previously been requested to shutdown, it will
automatically escalate and force shutdown.
• {on_attach} (`fun(bufnr: integer)`) Runs the on_attach
function from the client's config if it was
defined. Useful for buffer-local setup.
• {supports_method} (`fun(method: string, opts?: {bufnr: integer?}): boolean`)
Checks if a client supports a given method.
Always returns true for unknown off-spec
methods. {opts} is a optional
`{bufnr?: integer}` table. Some language
server capabilities can be file specific.
• {is_stopped} (`fun(): boolean`) Checks whether a client is
stopped. Returns: true if the client is fully
stopped.
*vim.lsp.Client.Progress*
Extends: |vim.Ringbuf|
Fields: ~
• {pending} (`table<lsp.ProgressToken,lsp.LSPAny>`)
*vim.lsp.ClientConfig*
Fields: ~
• {cmd} (`string[]|fun(dispatchers: vim.lsp.rpc.Dispatchers): vim.lsp.rpc.PublicClient`)
command string[] that launches the language
server (treated as in |jobstart()|, must be
absolute or on `$PATH`, shell constructs like
"~" are not expanded), or function that creates
an RPC client. Function receives a `dispatchers`
table and returns a table with member functions
`request`, `notify`, `is_closing` and
`terminate`. See |vim.lsp.rpc.request()|,
|vim.lsp.rpc.notify()|. For TCP there is a
builtin RPC client factory:
|vim.lsp.rpc.connect()|
• {cmd_cwd}? (`string`, default: cwd) Directory to launch the
`cmd` process. Not related to `root_dir`.
• {cmd_env}? (`table`) Environment flags to pass to the LSP
on spawn. Must be specified using a table.
Non-string values are coerced to string.
Example: >lua
{ PORT = 8080; HOST = "0.0.0.0"; }
<
• {detached}? (`boolean`, default: true) Daemonize the server
process so that it runs in a separate process
group from Nvim. Nvim will shutdown the process
on exit, but if Nvim fails to exit cleanly this
could leave behind orphaned server processes.
• {workspace_folders}? (`lsp.WorkspaceFolder[]`) List of workspace
folders passed to the language server. For
backwards compatibility rootUri and rootPath
will be derived from the first workspace folder
in this list. See `workspaceFolders` in the LSP
spec.
• {capabilities}? (`lsp.ClientCapabilities`) Map overriding the
default capabilities defined by
|vim.lsp.protocol.make_client_capabilities()|,
passed to the language server on initialization.
Hint: use make_client_capabilities() and modify
its result.
• Note: To send an empty dictionary use
|vim.empty_dict()|, else it will be encoded as
an array.
• {handlers}? (`table<string,function>`) Map of language
server method names to |lsp-handler|
• {settings}? (`table`) Map with language server specific
settings. See the {settings} in
|vim.lsp.Client|.
• {commands}? (`table<string,fun(command: lsp.Command, ctx: table)>`)
Table that maps string of clientside commands to
user-defined functions. Commands passed to
start_client take precedence over the global
command registry. Each key must be a unique
command name, and the value is a function which
is called if any LSP action (code action, code
lenses, ...) triggers the command.
• {init_options}? (`table`) Values to pass in the initialization
request as `initializationOptions`. See
`initialize` in the LSP spec.
• {name}? (`string`, default: client-id) Name in log
messages.
• {get_language_id}? (`fun(bufnr: integer, filetype: string): string`)
Language ID as string. Defaults to the filetype.
• {offset_encoding}? (`'utf-8'|'utf-16'|'utf-32'`) The encoding that
the LSP server expects. Client does not verify
this is correct.
• {on_error}? (`fun(code: integer, err: string)`) Callback
invoked when the client operation throws an
error. `code` is a number describing the error.
Other arguments may be passed depending on the
error kind. See `vim.lsp.rpc.client_errors` for
possible errors. Use
`vim.lsp.rpc.client_errors[code]` to get
human-friendly name.
• {before_init}? (`fun(params: lsp.InitializeParams, config: vim.lsp.ClientConfig)`)
Callback invoked before the LSP "initialize"
phase, where `params` contains the parameters
being sent to the server and `config` is the
config that was passed to
|vim.lsp.start_client()|. You can use this to
modify parameters before they are sent.
• {on_init}? (`elem_or_list<fun(client: vim.lsp.Client, initialize_result: lsp.InitializeResult)>`)
Callback invoked after LSP "initialize", where
`result` is a table of `capabilities` and
anything else the server may send. For example,
clangd sends `initialize_result.offsetEncoding`
if `capabilities.offsetEncoding` was sent to it.
You can only modify the `client.offset_encoding`
here before any notifications are sent.
• {on_exit}? (`elem_or_list<fun(code: integer, signal: integer, client_id: integer)>`)
Callback invoked on client exit.
• code: exit code of the process
• signal: number describing the signal used to
terminate (if any)
• client_id: client handle
• {on_attach}? (`elem_or_list<fun(client: vim.lsp.Client, bufnr: integer)>`)
Callback invoked when client attaches to a
buffer.
• {trace}? (`'off'|'messages'|'verbose'`, default: "off")
Passed directly to the language server in the
initialize request. Invalid/empty values will
• {flags}? (`table`) A table with flags for the client. The
current (experimental) flags are:
• {allow_incremental_sync}? (`boolean`, default:
`true`) Allow using incremental sync for
buffer edits
• {debounce_text_changes} (`integer`, default:
`150`) Debounce `didChange` notifications to
the server by the given number in
milliseconds. No debounce occurs if `nil`.
• {exit_timeout} (`integer|false`, default:
`false`) Milliseconds to wait for server to
exit cleanly after sending the "shutdown"
request before sending kill -15. If set to
false, nvim exits immediately after sending
the "shutdown" request to the server.
• {root_dir}? (`string`) Directory where the LSP server will
base its workspaceFolders, rootUri, and rootPath
on initialization.
==============================================================================
Lua module: vim.lsp.buf *lsp-buf*
*vim.lsp.ListOpts*
Fields: ~
• {on_list}? (`fun(t: vim.lsp.LocationOpts.OnList)`) list-handler
replacing the default handler. Called for any non-empty
result. This table can be used with |setqflist()| or
|setloclist()|. E.g.: >lua
local function on_list(options)
vim.fn.setqflist({}, ' ', options)
vim.cmd.cfirst()
end
vim.lsp.buf.definition({ on_list = on_list })
vim.lsp.buf.references(nil, { on_list = on_list })
<
If you prefer loclist instead of qflist: >lua
vim.lsp.buf.definition({ loclist = true })
vim.lsp.buf.references(nil, { loclist = true })
<
• {loclist}? (`boolean`)
*vim.lsp.LocationOpts*
Extends: |vim.lsp.ListOpts|
Fields: ~
• {reuse_win}? (`boolean`) Jump to existing window if buffer is already
open.
*vim.lsp.LocationOpts.OnList*
Fields: ~
• {items} (`table[]`) Structured like |setqflist-what|
• {title}? (`string`) Title for the list.
• {context}? (`table`) `ctx` from |lsp-handler|
*vim.lsp.buf.add_workspace_folder()*
add_workspace_folder({workspace_folder})
Add the folder at path to the workspace folders. If {path} is not
provided, the user will be prompted for a path using |input()|.
Parameters: ~
• {workspace_folder} (`string?`)
clear_references() *vim.lsp.buf.clear_references()*
Removes document highlights from current buffer.
code_action({opts}) *vim.lsp.buf.code_action()*
Selects a code action available at the current cursor position.
Parameters: ~
• {opts} (`table?`) A table with the following fields:
• {context}? (`lsp.CodeActionContext`) Corresponds to
`CodeActionContext` of the LSP specification:
• {diagnostics}? (`table`) LSP `Diagnostic[]`. Inferred from
the current position if not provided.
• {only}? (`table`) List of LSP `CodeActionKind`s used to
filter the code actions. Most language servers support
values like `refactor` or `quickfix`.
• {triggerKind}? (`integer`) The reason why code actions
were requested.
• {filter}? (`fun(x: lsp.CodeAction|lsp.Command):boolean`)
Predicate taking an `CodeAction` and returning a boolean.
• {apply}? (`boolean`) When set to `true`, and there is just
one remaining action (after filtering), the action is
applied without user query.
• {range}? (`{start: integer[], end: integer[]}`) Range for
which code actions should be requested. If in visual mode
this defaults to the active selection. Table must contain
`start` and `end` keys with {row,col} tuples using mark-like
indexing. See |api-indexing|
See also: ~
• https://microsoft.github.io/language-server-protocol/specifications/specification-current/#textDocument_codeAction
• vim.lsp.protocol.CodeActionTriggerKind
completion({context}) *vim.lsp.buf.completion()*
Retrieves the completion items at the current cursor position. Can only be
called in Insert mode.
Parameters: ~
• {context} (`table`) (context support not yet implemented) Additional
information about the context in which a completion was
triggered (how it was triggered, and by which trigger
character, if applicable)
See also: ~
• vim.lsp.protocol.CompletionTriggerKind
declaration({opts}) *vim.lsp.buf.declaration()*
Jumps to the declaration of the symbol under the cursor.
Note: ~
• Many servers do not implement this method. Generally, see
|vim.lsp.buf.definition()| instead.
Parameters: ~
• {opts} (`vim.lsp.LocationOpts?`) See |vim.lsp.LocationOpts|.
definition({opts}) *vim.lsp.buf.definition()*
Jumps to the definition of the symbol under the cursor.
Parameters: ~
• {opts} (`vim.lsp.LocationOpts?`) See |vim.lsp.LocationOpts|.
document_highlight() *vim.lsp.buf.document_highlight()*
Send request to the server to resolve document highlights for the current
text document position. This request can be triggered by a key mapping or
by events such as `CursorHold`, e.g.: >vim
autocmd CursorHold <buffer> lua vim.lsp.buf.document_highlight()
autocmd CursorHoldI <buffer> lua vim.lsp.buf.document_highlight()
autocmd CursorMoved <buffer> lua vim.lsp.buf.clear_references()
<
Note: Usage of |vim.lsp.buf.document_highlight()| requires the following
highlight groups to be defined or you won't be able to see the actual
highlights. |hl-LspReferenceText| |hl-LspReferenceRead|
|hl-LspReferenceWrite|
document_symbol({opts}) *vim.lsp.buf.document_symbol()*
Lists all symbols in the current buffer in the quickfix window.
Parameters: ~
• {opts} (`vim.lsp.ListOpts?`) See |vim.lsp.ListOpts|.
execute_command({command_params}) *vim.lsp.buf.execute_command()*
Executes an LSP server command.
Parameters: ~
• {command_params} (`lsp.ExecuteCommandParams`)
See also: ~
• https://microsoft.github.io/language-server-protocol/specifications/specification-current/#workspace_executeCommand
format({opts}) *vim.lsp.buf.format()*
Formats a buffer using the attached (and optionally filtered) language
server clients.
Parameters: ~
• {opts} (`table?`) A table with the following fields:
• {formatting_options}? (`table`) Can be used to specify
FormattingOptions. Some unspecified options will be
automatically derived from the current Nvim options. See
https://microsoft.github.io/language-server-protocol/specification/#formattingOptions
• {timeout_ms}? (`integer`, default: `1000`) Time in
milliseconds to block for formatting requests. No effect if
async=true.
• {bufnr}? (`integer`, default: current buffer) Restrict
formatting to the clients attached to the given buffer.
• {filter}? (`fun(client: vim.lsp.Client): boolean?`)
Predicate used to filter clients. Receives a client as
argument and must return a boolean. Clients matching the
predicate are included. Example: >lua
-- Never request typescript-language-server for formatting
vim.lsp.buf.format {
filter = function(client) return client.name ~= "tsserver" end
}
<
• {async}? (`boolean`, default: false) If true the method
won't block. Editing the buffer while formatting
asynchronous can lead to unexpected changes.
• {id}? (`integer`) Restrict formatting to the client with ID
(client.id) matching this field.
• {name}? (`string`) Restrict formatting to the client with
name (client.name) matching this field.
• {range}?
(`{start:[integer,integer],end:[integer, integer]}|{start:[integer,integer],end:[integer,integer]}[]`,
default: current selection in visual mode, `nil` in other
modes, formatting the full buffer) Range to format. Table
must contain `start` and `end` keys with {row,col} tuples
using (1,0) indexing. Can also be a list of tables that
contain `start` and `end` keys as described above, in which
case `textDocument/rangesFormatting` support is required.
hover() *vim.lsp.buf.hover()*
Displays hover information about the symbol under the cursor in a floating
window. Calling the function twice will jump into the floating window.
implementation({opts}) *vim.lsp.buf.implementation()*
Lists all the implementations for the symbol under the cursor in the
quickfix window.
Parameters: ~
• {opts} (`vim.lsp.LocationOpts?`) See |vim.lsp.LocationOpts|.
incoming_calls() *vim.lsp.buf.incoming_calls()*
Lists all the call sites of the symbol under the cursor in the |quickfix|
window. If the symbol can resolve to multiple items, the user can pick one
in the |inputlist()|.
list_workspace_folders() *vim.lsp.buf.list_workspace_folders()*
List workspace folders.
outgoing_calls() *vim.lsp.buf.outgoing_calls()*
Lists all the items that are called by the symbol under the cursor in the
|quickfix| window. If the symbol can resolve to multiple items, the user
can pick one in the |inputlist()|.
references({context}, {opts}) *vim.lsp.buf.references()*
Lists all the references to the symbol under the cursor in the quickfix
window.
Parameters: ~
• {context} (`table?`) Context for the request
• {opts} (`vim.lsp.ListOpts?`) See |vim.lsp.ListOpts|.
See also: ~
• https://microsoft.github.io/language-server-protocol/specifications/specification-current/#textDocument_references
*vim.lsp.buf.remove_workspace_folder()*
remove_workspace_folder({workspace_folder})
Remove the folder at path from the workspace folders. If {path} is not
provided, the user will be prompted for a path using |input()|.
Parameters: ~
• {workspace_folder} (`string?`)
rename({new_name}, {opts}) *vim.lsp.buf.rename()*
Renames all references to the symbol under the cursor.
Parameters: ~
• {new_name} (`string?`) If not provided, the user will be prompted for
a new name using |vim.ui.input()|.
• {opts} (`table?`) Additional options:
• {filter}? (`fun(client: vim.lsp.Client): boolean?`)
Predicate used to filter clients. Receives a client as
argument and must return a boolean. Clients matching the
predicate are included.
• {name}? (`string`) Restrict clients used for rename to
ones where client.name matches this field.
• {bufnr}? (`integer`) (default: current buffer)
signature_help() *vim.lsp.buf.signature_help()*
Displays signature information about the symbol under the cursor in a
floating window.
type_definition({opts}) *vim.lsp.buf.type_definition()*
Jumps to the definition of the type of the symbol under the cursor.
Parameters: ~
• {opts} (`vim.lsp.LocationOpts?`) See |vim.lsp.LocationOpts|.
typehierarchy({kind}) *vim.lsp.buf.typehierarchy()*
Lists all the subtypes or supertypes of the symbol under the cursor in the
|quickfix| window. If the symbol can resolve to multiple items, the user
can pick one using |vim.ui.select()|.
Parameters: ~
• {kind} (`"subtypes"|"supertypes"`)
workspace_symbol({query}, {opts}) *vim.lsp.buf.workspace_symbol()*
Lists all symbols in the current workspace in the quickfix window.
The list is filtered against {query}; if the argument is omitted from the
call, the user is prompted to enter a string on the command line. An empty
string means no filtering is done.
Parameters: ~
• {query} (`string?`) optional
• {opts} (`vim.lsp.ListOpts?`) See |vim.lsp.ListOpts|.
==============================================================================
Lua module: vim.lsp.diagnostic *lsp-diagnostic*
*vim.lsp.diagnostic.get_namespace()*
get_namespace({client_id}, {is_pull})
Get the diagnostic namespace associated with an LSP client
|vim.diagnostic| for diagnostics
Parameters: ~
• {client_id} (`integer`) The id of the LSP client
• {is_pull} (`boolean?`) Whether the namespace is for a pull or push
client. Defaults to push
*vim.lsp.diagnostic.on_diagnostic()*
on_diagnostic({_}, {result}, {ctx}, {config})
|lsp-handler| for the method "textDocument/diagnostic"
See |vim.diagnostic.config()| for configuration options. Handler-specific
configuration can be set using |vim.lsp.with()|: >lua
vim.lsp.handlers["textDocument/diagnostic"] = vim.lsp.with(
vim.lsp.diagnostic.on_diagnostic, {
-- Enable underline, use default values
underline = true,
-- Enable virtual text, override spacing to 4
virtual_text = {
spacing = 4,
},
-- Use a function to dynamically turn signs off
-- and on, using buffer local variables
signs = function(namespace, bufnr)
return vim.b[bufnr].show_signs == true
end,
-- Disable a feature
update_in_insert = false,
}
)
<
Parameters: ~
• {result} (`lsp.DocumentDiagnosticReport`)
• {ctx} (`lsp.HandlerContext`)
• {config} (`vim.diagnostic.Opts`) Configuration table (see
|vim.diagnostic.config()|).
*vim.lsp.diagnostic.on_publish_diagnostics()*
on_publish_diagnostics({_}, {result}, {ctx}, {config})
|lsp-handler| for the method "textDocument/publishDiagnostics"
See |vim.diagnostic.config()| for configuration options. Handler-specific
configuration can be set using |vim.lsp.with()|: >lua
vim.lsp.handlers["textDocument/publishDiagnostics"] = vim.lsp.with(
vim.lsp.diagnostic.on_publish_diagnostics, {
-- Enable underline, use default values
underline = true,
-- Enable virtual text, override spacing to 4
virtual_text = {
spacing = 4,
},
-- Use a function to dynamically turn signs off
-- and on, using buffer local variables
signs = function(namespace, bufnr)
return vim.b[bufnr].show_signs == true
end,
-- Disable a feature
update_in_insert = false,
}
)
<
Parameters: ~
• {result} (`lsp.PublishDiagnosticsParams`)
• {ctx} (`lsp.HandlerContext`)
• {config} (`vim.diagnostic.Opts?`) Configuration table (see
|vim.diagnostic.config()|).
==============================================================================
Lua module: vim.lsp.codelens *lsp-codelens*
clear({client_id}, {bufnr}) *vim.lsp.codelens.clear()*
Clear the lenses
Parameters: ~
• {client_id} (`integer?`) filter by client_id. All clients if nil
• {bufnr} (`integer?`) filter by buffer. All buffers if nil, 0 for
current buffer
display({lenses}, {bufnr}, {client_id}) *vim.lsp.codelens.display()*
Display the lenses using virtual text
Parameters: ~
• {lenses} (`lsp.CodeLens[]?`) lenses to display
• {bufnr} (`integer`)
• {client_id} (`integer`)
get({bufnr}) *vim.lsp.codelens.get()*
Return all lenses for the given buffer
Parameters: ~
• {bufnr} (`integer`) Buffer number. 0 can be used for the current
buffer.
Return: ~
(`lsp.CodeLens[]`)
on_codelens({err}, {result}, {ctx}) *vim.lsp.codelens.on_codelens()*
|lsp-handler| for the method `textDocument/codeLens`
Parameters: ~
• {err} (`lsp.ResponseError?`)
• {result} (`lsp.CodeLens[]`)
• {ctx} (`lsp.HandlerContext`)
refresh({opts}) *vim.lsp.codelens.refresh()*
Refresh the lenses.
It is recommended to trigger this using an autocmd or via keymap.
Example: >vim
autocmd BufEnter,CursorHold,InsertLeave <buffer> lua vim.lsp.codelens.refresh({ bufnr = 0 })
<
Parameters: ~
• {opts} (`table?`) Optional fields
• {bufnr} (`integer?`) filter by buffer. All buffers if nil, 0
for current buffer
run() *vim.lsp.codelens.run()*
Run the code lens in the current line
save({lenses}, {bufnr}, {client_id}) *vim.lsp.codelens.save()*
Store lenses for a specific buffer and client
Parameters: ~
• {lenses} (`lsp.CodeLens[]?`) lenses to store
• {bufnr} (`integer`)
• {client_id} (`integer`)
==============================================================================
Lua module: vim.lsp.completion *lsp-completion*
*vim.lsp.completion.BufferOpts*
Fields: ~
• {autotrigger}? (`boolean`) Whether to trigger completion
automatically. Default: false
*vim.lsp.completion.enable()*
enable({enable}, {client_id}, {bufnr}, {opts})
Enables or disables completions from the given language client in the
given buffer.
Parameters: ~
• {enable} (`boolean`) True to enable, false to disable
• {client_id} (`integer`) Client ID
• {bufnr} (`integer`) Buffer handle, or 0 for the current buffer
• {opts} (`vim.lsp.completion.BufferOpts?`) See
|vim.lsp.completion.BufferOpts|.
trigger() *vim.lsp.completion.trigger()*
Trigger LSP completion in the current buffer.
==============================================================================
Lua module: vim.lsp.inlay_hint *lsp-inlay_hint*
enable({enable}, {filter}) *vim.lsp.inlay_hint.enable()*
Enables or disables inlay hints for the {filter}ed scope.
To "toggle", pass the inverse of `is_enabled()`: >lua
vim.lsp.inlay_hint.enable(not vim.lsp.inlay_hint.is_enabled())
<
Parameters: ~
• {enable} (`boolean?`) true/nil to enable, false to disable
• {filter} (`table?`) Optional filters |kwargs|, or `nil` for all.
• {bufnr} (`integer?`) Buffer number, or 0 for current
buffer, or nil for all.
get({filter}) *vim.lsp.inlay_hint.get()*
Get the list of inlay hints, (optionally) restricted by buffer or range.
Example usage: >lua
local hint = vim.lsp.inlay_hint.get({ bufnr = 0 })[1] -- 0 for current buffer
local client = vim.lsp.get_client_by_id(hint.client_id)
local resp = client.request_sync('inlayHint/resolve', hint.inlay_hint, 100, 0)
local resolved_hint = assert(resp and resp.result, resp.err)
vim.lsp.util.apply_text_edits(resolved_hint.textEdits, 0, client.encoding)
location = resolved_hint.label[1].location
client.request('textDocument/hover', {
textDocument = { uri = location.uri },
position = location.range.start,
})
<
Parameters: ~
• {filter} (`table?`) Optional filters |kwargs|:
• {bufnr} (`integer?`)
• {range} (`lsp.Range?`)
Return: ~
(`table[]`) A list of objects with the following fields:
• {bufnr} (`integer`)
• {client_id} (`integer`)
• {inlay_hint} (`lsp.InlayHint`)
is_enabled({filter}) *vim.lsp.inlay_hint.is_enabled()*
Query whether inlay hint is enabled in the {filter}ed scope
Parameters: ~
• {filter} (`table?`) Optional filters |kwargs|, or `nil` for all.
• {bufnr} (`integer?`) Buffer number, or 0 for current
buffer, or nil for all.
Return: ~
(`boolean`)
==============================================================================
Lua module: vim.lsp.semantic_tokens *lsp-semantic_tokens*
force_refresh({bufnr}) *vim.lsp.semantic_tokens.force_refresh()*
Force a refresh of all semantic tokens
Only has an effect if the buffer is currently active for semantic token
highlighting (|vim.lsp.semantic_tokens.start()| has been called for it)
Parameters: ~
• {bufnr} (`integer?`) filter by buffer. All buffers if nil, current
buffer if 0
*vim.lsp.semantic_tokens.get_at_pos()*
get_at_pos({bufnr}, {row}, {col})
Return the semantic token(s) at the given position. If called without
arguments, returns the token under the cursor.
Parameters: ~
• {bufnr} (`integer?`) Buffer number (0 for current buffer, default)
• {row} (`integer?`) Position row (default cursor position)
• {col} (`integer?`) Position column (default cursor position)
Return: ~
(`table?`) List of tokens at position. Each token has the following
fields:
• line (integer) line number, 0-based
• start_col (integer) start column, 0-based
• end_col (integer) end column, 0-based
• type (string) token type as string, e.g. "variable"
• modifiers (table) token modifiers as a set. E.g., { static = true,
readonly = true }
• client_id (integer)
*vim.lsp.semantic_tokens.highlight_token()*
highlight_token({token}, {bufnr}, {client_id}, {hl_group}, {opts})
Highlight a semantic token.
Apply an extmark with a given highlight group for a semantic token. The
mark will be deleted by the semantic token engine when appropriate; for
example, when the LSP sends updated tokens. This function is intended for
use inside |LspTokenUpdate| callbacks.
Parameters: ~
• {token} (`table`) A semantic token, found as `args.data.token` in
|LspTokenUpdate|
• {bufnr} (`integer`) The buffer to highlight, or `0` for current
buffer
• {client_id} (`integer`) The ID of the |vim.lsp.Client|
• {hl_group} (`string`) Highlight group name
• {opts} (`table?`) Optional parameters:
• {priority}? (`integer`, default:
`vim.highlight.priorities.semantic_tokens + 3`)
Priority for the applied extmark.
start({bufnr}, {client_id}, {opts}) *vim.lsp.semantic_tokens.start()*
Start the semantic token highlighting engine for the given buffer with the
given client. The client must already be attached to the buffer.
NOTE: This is currently called automatically by
|vim.lsp.buf_attach_client()|. To opt-out of semantic highlighting with a
server that supports it, you can delete the semanticTokensProvider table
from the {server_capabilities} of your client in your |LspAttach| callback
or your configuration's `on_attach` callback: >lua
client.server_capabilities.semanticTokensProvider = nil
<
Parameters: ~
• {bufnr} (`integer`) Buffer number, or `0` for current buffer
• {client_id} (`integer`) The ID of the |vim.lsp.Client|
• {opts} (`table?`) Optional keyword arguments
• debounce (integer, default: 200): Debounce token
requests to the server by the given number in
milliseconds
stop({bufnr}, {client_id}) *vim.lsp.semantic_tokens.stop()*
Stop the semantic token highlighting engine for the given buffer with the
given client.
NOTE: This is automatically called by a |LspDetach| autocmd that is set up
as part of `start()`, so you should only need this function to manually
disengage the semantic token engine without fully detaching the LSP client
from the buffer.
Parameters: ~
• {bufnr} (`integer`) Buffer number, or `0` for current buffer
• {client_id} (`integer`) The ID of the |vim.lsp.Client|
==============================================================================
Lua module: vim.lsp.handlers *lsp-handlers*
hover({_}, {result}, {ctx}, {config}) *vim.lsp.handlers.hover()*
|lsp-handler| for the method "textDocument/hover" >lua
vim.lsp.handlers["textDocument/hover"] = vim.lsp.with(
vim.lsp.handlers.hover, {
-- Use a sharp border with `FloatBorder` highlights
border = "single",
-- add the title in hover float window
title = "hover"
}
)
<
Parameters: ~
• {result} (`lsp.Hover`)
• {ctx} (`lsp.HandlerContext`)
• {config} (`table`) Configuration table.
• border: (default=nil)
• Add borders to the floating window
• See |vim.lsp.util.open_floating_preview()| for more
options.
*vim.lsp.handlers.signature_help()*
signature_help({_}, {result}, {ctx}, {config})
|lsp-handler| for the method "textDocument/signatureHelp".
The active parameter is highlighted with |hl-LspSignatureActiveParameter|. >lua
vim.lsp.handlers["textDocument/signatureHelp"] = vim.lsp.with(
vim.lsp.handlers.signature_help, {
-- Use a sharp border with `FloatBorder` highlights
border = "single"
}
)
<
Parameters: ~
• {result} (`lsp.SignatureHelp`) Response from the language server
• {ctx} (`lsp.HandlerContext`) Client context
• {config} (`table`) Configuration table.
• border: (default=nil)
• Add borders to the floating window
• See |vim.lsp.util.open_floating_preview()| for more
options
==============================================================================
Lua module: vim.lsp.util *lsp-util*
*vim.lsp.util.apply_text_document_edit()*
apply_text_document_edit({text_document_edit}, {index}, {offset_encoding})
Applies a `TextDocumentEdit`, which is a list of changes to a single
document.
Parameters: ~
• {text_document_edit} (`lsp.TextDocumentEdit`)
• {index} (`integer?`) Optional index of the edit, if from
a list of edits (or nil, if not from a list)
• {offset_encoding} (`string?`)
See also: ~
• https://microsoft.github.io/language-server-protocol/specifications/specification-current/#textDocumentEdit
*vim.lsp.util.apply_text_edits()*
apply_text_edits({text_edits}, {bufnr}, {offset_encoding})
Applies a list of text edits to a buffer.
Parameters: ~
• {text_edits} (`lsp.TextEdit[]`)
• {bufnr} (`integer`) Buffer id
• {offset_encoding} (`string`) utf-8|utf-16|utf-32
See also: ~
• https://microsoft.github.io/language-server-protocol/specifications/specification-current/#textEdit
*vim.lsp.util.apply_workspace_edit()*
apply_workspace_edit({workspace_edit}, {offset_encoding})
Applies a `WorkspaceEdit`.
Parameters: ~
• {workspace_edit} (`lsp.WorkspaceEdit`)
• {offset_encoding} (`string`) utf-8|utf-16|utf-32 (required)
See also: ~
• https://microsoft.github.io/language-server-protocol/specifications/specification-current/#workspace_applyEdit
buf_clear_references({bufnr}) *vim.lsp.util.buf_clear_references()*
Removes document highlights from a buffer.
Parameters: ~
• {bufnr} (`integer?`) Buffer id
*vim.lsp.util.buf_highlight_references()*
buf_highlight_references({bufnr}, {references}, {offset_encoding})
Shows a list of document highlights for a certain buffer.
Parameters: ~
• {bufnr} (`integer`) Buffer id
• {references} (`lsp.DocumentHighlight[]`) objects to highlight
• {offset_encoding} (`string`) One of "utf-8", "utf-16", "utf-32".
See also: ~
• https://microsoft.github.io/language-server-protocol/specification/#textDocumentContentChangeEvent
*vim.lsp.util.character_offset()*
character_offset({buf}, {row}, {col}, {offset_encoding})
Returns the UTF-32 and UTF-16 offsets for a position in a certain buffer.
Parameters: ~
• {buf} (`integer`) buffer number (0 for current)
• {row} (`integer`) 0-indexed line
• {col} (`integer`) 0-indexed byte offset in line
• {offset_encoding} (`string`) 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}
*vim.lsp.util.convert_input_to_markdown_lines()*
convert_input_to_markdown_lines({input}, {contents})
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.
Parameters: ~
• {input} (`lsp.MarkedString|lsp.MarkedString[]|lsp.MarkupContent`)
• {contents} (`string[]?`) List of strings to extend with converted
lines. Defaults to {}.
Return: ~
(`string[]`) extended with lines of converted markdown.
See also: ~
• https://microsoft.github.io/language-server-protocol/specifications/specification-current/#textDocument_hover
*vim.lsp.util.convert_signature_help_to_markdown_lines()*
convert_signature_help_to_markdown_lines({signature_help}, {ft}, {triggers})
Converts `textDocument/signatureHelp` response to markdown lines.
Parameters: ~
• {signature_help} (`lsp.SignatureHelp`) Response of
`textDocument/SignatureHelp`
• {ft} (`string?`) filetype that will be use as the `lang`
for the label markdown code block
• {triggers} (`table?`) list of trigger characters from the lsp
server. used to better determine parameter offsets
Return (multiple): ~
(`string[]?`) table list of lines of converted markdown.
(`number[]?`) table of active hl
See also: ~
• https://microsoft.github.io/language-server-protocol/specifications/specification-current/#textDocument_signatureHelp
get_effective_tabstop({bufnr}) *vim.lsp.util.get_effective_tabstop()*
Returns indentation size.
Parameters: ~
• {bufnr} (`integer?`) Buffer handle, defaults to current
Return: ~
(`integer`) indentation size
See also: ~
• 'shiftwidth'
*vim.lsp.util.jump_to_location()*
jump_to_location({location}, {offset_encoding}, {reuse_win})
Jumps to a location.
Parameters: ~
• {location} (`lsp.Location|lsp.LocationLink`)
• {offset_encoding} (`string?`) utf-8|utf-16|utf-32
• {reuse_win} (`boolean?`) Jump to existing window if buffer is
already open.
Return: ~
(`boolean`) `true` if the jump succeeded
*vim.lsp.util.locations_to_items()*
locations_to_items({locations}, {offset_encoding})
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()|.
Parameters: ~
• {locations} (`lsp.Location[]|lsp.LocationLink[]`)
• {offset_encoding} (`string`) offset_encoding for locations
utf-8|utf-16|utf-32 default to first client of
buffer
Return: ~
(`table[]`) A list of objects with the following fields:
• {filename} (`string`)
• {lnum} (`integer`) 1-indexed line number
• {end_lnum} (`integer`) 1-indexed end line number
• {col} (`integer`) 1-indexed column
• {end_col} (`integer`) 1-indexed end column
• {text} (`string`)
• {user_data} (`lsp.Location|lsp.LocationLink`)
*vim.lsp.util.make_floating_popup_options()*
make_floating_popup_options({width}, {height}, {opts})
Creates a table with sensible default options for a floating window. The
table can be passed to |nvim_open_win()|.
Parameters: ~
• {width} (`integer`) window width (in character cells)
• {height} (`integer`) window height (in character cells)
• {opts} (`table`) optional
• offset_x (integer) offset to add to `col`
• offset_y (integer) offset to add to `row`
• border (string or table) override `border`
• focusable (string or table) override `focusable`
• zindex (string or table) override `zindex`, defaults to 50
• relative ("mouse"|"cursor") defaults to "cursor"
• anchor_bias ("auto"|"above"|"below") defaults to "auto"
• "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.
Return: ~
(`table`) Options
*vim.lsp.util.make_formatting_params()*
make_formatting_params({options})
Creates a `DocumentFormattingParams` object for the current buffer and
cursor position.
Parameters: ~
• {options} (`lsp.FormattingOptions?`) with valid `FormattingOptions`
entries
Return: ~
(`lsp.DocumentFormattingParams`) object
See also: ~
• https://microsoft.github.io/language-server-protocol/specifications/specification-current/#textDocument_formatting
*vim.lsp.util.make_given_range_params()*
make_given_range_params({start_pos}, {end_pos}, {bufnr}, {offset_encoding})
Using the given range in the current buffer, creates an object that is
similar to |vim.lsp.util.make_range_params()|.
Parameters: ~
• {start_pos} (`integer[]?`) {row,col} mark-indexed position.
Defaults to the start of the last visual selection.
• {end_pos} (`integer[]?`) {row,col} mark-indexed position.
Defaults to the end of the last visual selection.
• {bufnr} (`integer?`) buffer handle or 0 for current,
defaults to current
• {offset_encoding} (`"utf-8"|"utf-16"|"utf-32"?`) defaults to
`offset_encoding` of first client of `bufnr`
Return: ~
(`table`) { textDocument = { uri = `current_file_uri` }, range = {
start = `start_position`, end = `end_position` } }
*vim.lsp.util.make_position_params()*
make_position_params({window}, {offset_encoding})
Creates a `TextDocumentPositionParams` object for the current buffer and
cursor position.
Parameters: ~
• {window} (`integer?`) window handle or 0 for current,
defaults to current
• {offset_encoding} (`string?`) utf-8|utf-16|utf-32|nil defaults to
`offset_encoding` of first client of buffer of
`window`
Return: ~
(`lsp.TextDocumentPositionParams`)
See also: ~
• https://microsoft.github.io/language-server-protocol/specifications/specification-current/#textDocumentPositionParams
*vim.lsp.util.make_range_params()*
make_range_params({window}, {offset_encoding})
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`.
Parameters: ~
• {window} (`integer?`) window handle or 0 for current,
defaults to current
• {offset_encoding} (`"utf-8"|"utf-16"|"utf-32"?`) defaults to
`offset_encoding` of first client of buffer of
`window`
Return: ~
(`table`) { textDocument = { uri = `current_file_uri` }, range = {
start = `current_position`, end = `current_position` } }
*vim.lsp.util.make_text_document_params()*
make_text_document_params({bufnr})
Creates a `TextDocumentIdentifier` object for the current buffer.
Parameters: ~
• {bufnr} (`integer?`) Buffer handle, defaults to current
Return: ~
(`lsp.TextDocumentIdentifier`)
See also: ~
• https://microsoft.github.io/language-server-protocol/specifications/specification-current/#textDocumentIdentifier
*vim.lsp.util.make_workspace_params()*
make_workspace_params({added}, {removed})
Create the workspace params
Parameters: ~
• {added} (`lsp.WorkspaceFolder[]`)
• {removed} (`lsp.WorkspaceFolder[]`)
Return: ~
(`lsp.WorkspaceFoldersChangeEvent`)
*vim.lsp.util.open_floating_preview()*
open_floating_preview({contents}, {syntax}, {opts})
Shows contents in a floating window.
Parameters: ~
• {contents} (`table`) of lines to show in window
• {syntax} (`string`) of syntax to set for opened buffer
• {opts} (`table?`) with optional fields (additional keys are
filtered with |vim.lsp.util.make_floating_popup_options()|
before they are passed on to |nvim_open_win()|)
• {height}? (`integer`) Height of floating window
• {width}? (`integer`) Width of floating window
• {wrap}? (`boolean`, default: `true`) Wrap long lines
• {wrap_at}? (`integer`) Character to wrap at for
computing height when wrap is enabled
• {max_width}? (`integer`) Maximal width of floating
window
• {max_height}? (`integer`) Maximal height of floating
window
• {focus_id}? (`string`) If a popup with this id is
opened, then focus it
• {close_events}? (`table`) List of events that closes the
floating window
• {focusable}? (`boolean`, default: `true`) Make float
focusable.
• {focus}? (`boolean`, default: `true`) If `true`, and if
{focusable} is also `true`, focus an existing floating
window with the same {focus_id}
Return (multiple): ~
(`integer`) bufnr of newly created float window
(`integer`) winid of newly created float window preview window
preview_location({location}, {opts}) *vim.lsp.util.preview_location()*
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)
Parameters: ~
• {location} (`lsp.Location|lsp.LocationLink`)
• {opts} (`table`)
Return (multiple): ~
(`integer?`) buffer id of float window
(`integer?`) window id of float window
rename({old_fname}, {new_fname}, {opts}) *vim.lsp.util.rename()*
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.
Parameters: ~
• {old_fname} (`string`)
• {new_fname} (`string`)
• {opts} (`table?`) Options:
• {overwrite}? (`boolean`)
• {ignoreIfExists}? (`boolean`)
*vim.lsp.util.show_document()*
show_document({location}, {offset_encoding}, {opts})
Shows document and optionally jumps to the location.
Parameters: ~
• {location} (`lsp.Location|lsp.LocationLink`)
• {offset_encoding} (`string?`) utf-8|utf-16|utf-32
• {opts} (`table?`) options
• reuse_win (boolean) Jump to existing window if
buffer is already open.
• focus (boolean) Whether to focus/jump to location
if possible. Defaults to true.
Return: ~
(`boolean`) `true` if succeeded
*vim.lsp.util.stylize_markdown()*
stylize_markdown({bufnr}, {contents}, {opts})
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
Parameters: ~
• {bufnr} (`integer`)
• {contents} (`string[]`) of lines to show in window
• {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
symbols_to_items({symbols}, {bufnr}) *vim.lsp.util.symbols_to_items()*
Converts symbols to quickfix list items.
Parameters: ~
• {symbols} (`table`) DocumentSymbol[] or SymbolInformation[]
• {bufnr} (`integer`)
==============================================================================
Lua module: vim.lsp.log *lsp-log*
get_filename() *vim.lsp.log.get_filename()*
Returns the log filename.
Return: ~
(`string`) log filename
get_level() *vim.lsp.log.get_level()*
Gets the current log level.
Return: ~
(`integer`) current log level
set_format_func({handle}) *vim.lsp.log.set_format_func()*
Sets formatting function used to format logs
Parameters: ~
• {handle} (`function`) function to apply to logging arguments, pass
vim.inspect for multi-line formatting
set_level({level}) *vim.lsp.log.set_level()*
Sets the current log level.
Parameters: ~
• {level} (`string|integer`) One of `vim.lsp.log.levels`
should_log({level}) *vim.lsp.log.should_log()*
Checks whether the level is sufficient for logging.
Parameters: ~
• {level} (`integer`) log level
Return: ~
(`bool`) true if would log, false if not
==============================================================================
Lua module: vim.lsp.rpc *lsp-rpc*
*vim.lsp.rpc.PublicClient*
Fields: ~
• {request} (`fun(method: string, params: table?, callback: fun(err: lsp.ResponseError?, result: any), notify_reply_callback: fun(integer)?):boolean,integer?`)
see |vim.lsp.rpc.request()|
• {notify} (`fun(method: string, params: any):boolean`) see
|vim.lsp.rpc.notify()|
• {is_closing} (`fun(): boolean`)
• {terminate} (`fun()`)
connect({host_or_path}, {port}) *vim.lsp.rpc.connect()*
Create a LSP RPC client factory that connects to either:
• a named pipe (windows)
• a domain socket (unix)
• a host and port via TCP
Return a function that can be passed to the `cmd` field for
|vim.lsp.start_client()| or |vim.lsp.start()|.
Parameters: ~
• {host_or_path} (`string`) host to connect to or path to a pipe/domain
socket
• {port} (`integer?`) TCP port to connect to. If absent the
first argument must be a pipe
Return: ~
(`fun(dispatchers: vim.lsp.rpc.Dispatchers): vim.lsp.rpc.PublicClient`)
format_rpc_error({err}) *vim.lsp.rpc.format_rpc_error()*
Constructs an error message from an LSP error object.
Parameters: ~
• {err} (`table`) The error object
Return: ~
(`string`) error_message The formatted error message
notify({method}, {params}) *vim.lsp.rpc.notify()*
Sends a notification to the LSP server.
Parameters: ~
• {method} (`string`) The invoked LSP method
• {params} (`table?`) Parameters for the invoked LSP method
Return: ~
(`boolean`) `true` if notification could be sent, `false` if not
*vim.lsp.rpc.request()*
request({method}, {params}, {callback}, {notify_reply_callback})
Sends a request to the LSP server and runs {callback} upon response.
Parameters: ~
• {method} (`string`) The invoked LSP method
• {params} (`table?`) Parameters for the invoked LSP
method
• {callback} (`fun(err: lsp.ResponseError?, result: any)`)
Callback to invoke
• {notify_reply_callback} (`fun(message_id: integer)?`) Callback to
invoke as soon as a request is no longer
pending
Return (multiple): ~
(`boolean`) success `true` if request could be sent, `false` if not
(`integer?`) message_id if request could be sent, `nil` if not
*vim.lsp.rpc.rpc_response_error()*
rpc_response_error({code}, {message}, {data})
Creates an RPC response table `error` to be sent to the LSP response.
Parameters: ~
• {code} (`integer`) RPC error code defined, see
`vim.lsp.protocol.ErrorCodes`
• {message} (`string?`) arbitrary message to send to server
• {data} (`any?`) arbitrary data to send to server
Return: ~
(`lsp.ResponseError`)
See also: ~
• lsp.ErrorCodes See `vim.lsp.protocol.ErrorCodes`
start({cmd}, {dispatchers}, {extra_spawn_params}) *vim.lsp.rpc.start()*
Starts an LSP server process and create an LSP RPC client object to
interact with it. Communication with the spawned process happens via
stdio. For communication via TCP, spawn a process manually and use
|vim.lsp.rpc.connect()|
Parameters: ~
• {cmd} (`string[]`) Command to start the LSP server.
• {dispatchers} (`table?`) Dispatchers for LSP message types.
• {notification}
(`fun(method: string, params: table)`)
• {server_request}
(`fun(method: string, params: table): any?, lsp.ResponseError?`)
• {on_exit}
(`fun(code: integer, signal: integer)`)
• {on_error} (`fun(code: integer, err: any)`)
• {extra_spawn_params} (`table?`) Additional context for the LSP server
process.
• {cwd}? (`string`) Working directory for the
LSP server process
• {detached}? (`boolean`) Detach the LSP server
process from the current process
• {env}? (`table<string,string>`) Additional
environment variables for LSP server process.
See |vim.system()|
Return: ~
(`vim.lsp.rpc.PublicClient`) Client RPC object, with these methods:
• `notify()` |vim.lsp.rpc.notify()|
• `request()` |vim.lsp.rpc.request()|
• `is_closing()` returns a boolean indicating if the RPC is closing.
• `terminate()` terminates the RPC client. See
|vim.lsp.rpc.PublicClient|.
==============================================================================
Lua module: vim.lsp.protocol *lsp-protocol*
*vim.lsp.protocol.make_client_capabilities()*
make_client_capabilities()
Gets a new ClientCapabilities object describing the LSP client
capabilities.
Return: ~
(`lsp.ClientCapabilities`)
Methods *vim.lsp.protocol.Methods*
LSP method names.
See also: ~
• https://microsoft.github.io/language-server-protocol/specification/#metaModel
*vim.lsp.protocol.resolve_capabilities()*
resolve_capabilities({server_capabilities})
Creates a normalized object describing LSP server capabilities.
Parameters: ~
• {server_capabilities} (`table`) Table of capabilities supported by
the server
Return: ~
(`lsp.ServerCapabilities?`) Normalized table of capabilities
vim:tw=78:ts=8:sw=4:sts=4:et:ft=help:norl:
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