neovim/runtime/doc/lsp.txt

*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* *gri* *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()|
- "gri" is mapped in Normal mode to |vim.lsp.buf.implementation()|
- "gO" is mapped in Normal mode to |vim.lsp.buf.document_symbol()|
- 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)
        -- Unset 'formatexpr'
        vim.bo[args.buf].formatexpr = nil
        -- Unset 'omnifunc'
        vim.bo[args.buf].omnifunc = nil
        -- Unmap K
        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
      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/foldingRange'`
- `'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)
<
    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|.

    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-resolution*
Handlers can be set by (in increasing priority):

- 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.

  Example: >lua

    vim.lsp.handlers['textDocument/publishDiagnostics'] = my_custom_diagnostics_handler
<
  Note: this only applies for requests/notifications made by the
  server to the client.

- The {handlers} parameter of |vim.lsp.start()|. This sets the default
  |lsp-handler| for a specific server.

  Example: >lua

    vim.lsp.start {
      ..., -- Other configuration omitted.
      handlers = {
        ['textDocument/publishDiagnostics'] = my_custom_server_definition
      },
    }
<
  Note: this only applies for requests/notifications made by the
  server to the client.

- 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/publishDiagnostics',
      my_request_params,
      my_handler
    )
<

                                                            *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-LspReferenceTarget*
LspReferenceTarget        used for highlighting reference targets (e.g. in a
                          hover range)
                                                             *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.hl.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. See |lsp-config| for an example.

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)
        -- Get the detaching client
        local client = vim.lsp.get_client_by_id(args.data.client_id)

        -- Remove the autocommand to format the buffer on save, if it exists
        if client.supports_method('textDocument/formatting') then
          vim.api.nvim_clear_autocmds({
            event = 'BufWritePre',
            buffer = args.buf,
          })
        end
      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|(fun(client: vim.lsp.Client, bufnr: integer): table?)?`)
                   Parameters to send to the server. Can also be passed as a
                   function that returns the params table for cases where
                   parameters are specific to the client.
      • {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|

foldclose({kind}, {winid})                               *vim.lsp.foldclose()*
    Close all {kind} of folds in the the window with {winid}.

    To automatically fold imports when opening a file, you can use an autocmd: >lua
        vim.api.nvim_create_autocmd('LspNotify', {
          callback = function(args)
            if args.data.method == 'textDocument/didOpen' then
              vim.lsp.foldclose('imports', vim.fn.bufwinid(args.buf))
            end
          end,
        })
<

    Parameters: ~
      • {kind}   (`lsp.FoldingRangeKind`) Kind to close, one of "comment",
                 "imports" or "region".
      • {winid}  (`integer?`) Defaults to the current window.

foldexpr({lnum})                                          *vim.lsp.foldexpr()*
    Provides an interface between the built-in client and a `foldexpr`
    function.

    To use, check for the "textDocument/foldingRange" capability in an
    |LspAttach| autocommand. Example: >lua
        vim.api.nvim_create_autocommand('LspAttach', {
          callback = function(args)
            local client = vim.lsp.get_client_by_id(args.data.client_id)
            if client:supports_method('textDocument/foldingRange') then
              vim.wo.foldmethod = 'expr'
              vim.wo.foldexpr = 'v:lua.vim.lsp.foldexpr()'
            end
          end,
        })
<

    Parameters: ~
      • {lnum}  (`integer`) line number

foldtext()                                                *vim.lsp.foldtext()*
    Provides a `foldtext` function that shows the `collapsedText` retrieved,
    defaults to the first folded line if `collapsedText` is not provided.

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()` or (more typically) 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.ClientConfig| 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.
    • `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()| 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 it has the same name and if the given
                    workspace folders (or root_dir) are all included in the
                    client's workspace folders.
                  • {bufnr}? (`integer`) Buffer handle to attach to if
                    starting or re-using a client (0 for current).
                  • {attach}? (`boolean`) Whether to attach the client to a
                    buffer (default true). If set to `false`, `reuse_client`
                    and `bufnr` will be ignored.
                  • {silent}? (`boolean`) Suppress error reporting if the LSP
                    server fails to start (default false).

    Return: ~
        (`integer?`) client_id

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


==============================================================================
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`) Called "position encoding" in LSP
                                spec, 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()|. 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}              (`lsp.LSPObject`) 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(self: vim.lsp.Client, method: string, params: table?, handler: lsp.Handler?, bufnr: integer?): boolean, integer?`)
                                See |Client:request()|.
      • {request_sync}          (`fun(self: vim.lsp.Client, method: string, params: table, timeout_ms: integer?, bufnr: integer?): {err: lsp.ResponseError?, result:any}?, string?`)
                                See |Client:request_sync()|.
      • {notify}                (`fun(self: vim.lsp.Client, method: string, params: table?): boolean`)
                                See |Client:notify()|.
      • {cancel_request}        (`fun(self: vim.lsp.Client, id: integer): boolean`)
                                See |Client:cancel_request()|.
      • {stop}                  (`fun(self: vim.lsp.Client, force: boolean?)`)
                                See |Client:stop()|.
      • {is_stopped}            (`fun(self: vim.lsp.Client): boolean`) See
                                |Client:is_stopped()|.
      • {exec_cmd}              (`fun(self: vim.lsp.Client, command: lsp.Command, context: {bufnr?: integer}?, handler: lsp.Handler?)`)
                                See |Client:exec_cmd()|.
      • {on_attach}             (`fun(self: vim.lsp.Client, bufnr: integer)`)
                                See |Client:on_attach()|.
      • {supports_method}       (`fun(self: vim.lsp.Client, method: string, bufnr: integer?)`)
                                See |Client:supports_method()|.

*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}?           (`lsp.LSPObject`) 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()` 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}?       (`lsp.LSPObject`) 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 buffer
                              filetype.
      • {offset_encoding}?    (`'utf-8'|'utf-16'|'utf-32'`) Called "position
                              encoding" in LSP spec, 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()|. 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.


Client:cancel_request({id})                          *Client:cancel_request()*
    Cancels a request with a given request id.

    Parameters: ~
      • {id}  (`integer`) id of request to cancel

    Return: ~
        (`boolean`) status indicating if the notification was successful.

    See also: ~
      • |Client:notify()|

Client:exec_cmd({command}, {context}, {handler})           *Client:exec_cmd()*
    Execute a lsp command, either via client command function (if available)
    or via workspace/executeCommand (if supported by the server)

    Parameters: ~
      • {command}  (`lsp.Command`)
      • {context}  (`{bufnr?: integer}?`)
      • {handler}  (`lsp.Handler?`) only called if a server command

Client:is_stopped()                                      *Client:is_stopped()*
    Checks whether a client is stopped.

    Return: ~
        (`boolean`) true if client is stopped or in the process of being
        stopped; false otherwise

Client:notify({method}, {params})                            *Client:notify()*
    Sends a notification to an LSP server.

    Parameters: ~
      • {method}  (`string`) LSP method name.
      • {params}  (`table?`) LSP request params.

    Return: ~
        (`boolean`) status indicating if the notification was successful. If
        it is false, then the client has shutdown.

Client:on_attach({bufnr})                                 *Client:on_attach()*
    Runs the on_attach function from the client's config if it was defined.
    Useful for buffer-local setup.

    Parameters: ~
      • {bufnr}  (`integer`) Buffer number

                                                            *Client:request()*
Client:request({method}, {params}, {handler}, {bufnr})
    Sends a request to the server.

    This is a thin wrapper around {client.rpc.request} with some additional
    checks for capabilities and handler availability.

    Parameters: ~
      • {method}   (`string`) LSP method name.
      • {params}   (`table?`) LSP request params.
      • {handler}  (`lsp.Handler?`) Response |lsp-handler| for this method.
      • {bufnr}    (`integer?`) (default: 0) Buffer handle, or 0 for current.

    Return (multiple): ~
        (`boolean`) status indicates whether the request was successful. If it
        is `false`, then it will always be `false` (the client has shutdown).
        (`integer?`) request_id Can be used with |Client:cancel_request()|.
        `nil` is request failed.

    See also: ~
      • |vim.lsp.buf_request_all()|

                                                       *Client:request_sync()*
Client:request_sync({method}, {params}, {timeout_ms}, {bufnr})
    Sends a request to the server and synchronously waits for the response.

    This is a wrapper around |Client:request()|

    Parameters: ~
      • {method}      (`string`) LSP method name.
      • {params}      (`table`) LSP request params.
      • {timeout_ms}  (`integer?`) Maximum time in milliseconds to wait for a
                      result. Defaults to 1000
      • {bufnr}       (`integer?`) (default: 0) Buffer handle, or 0 for
                      current.

    Return (multiple): ~
        (`{err: lsp.ResponseError?, result:any}?`) `result` and `err` from the
        |lsp-handler|. `nil` is the request was unsuccessful
        (`string?`) err On timeout, cancel or error, where `err` is a string
        describing the failure reason.

    See also: ~
      • |vim.lsp.buf_request_sync()|

Client:stop({force})                                           *Client:stop()*
    Stops a client, optionally with force.

    By default, it will just request 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.

    Parameters: ~
      • {force}  (`boolean?`)

Client:supports_method({method}, {bufnr})           *Client:supports_method()*
    Checks if a client supports a given method. Always returns true for
    unknown off-spec methods.

    Note: Some language server capabilities can be file specific.

    Parameters: ~
      • {method}  (`string`)
      • {bufnr}   (`integer?`)


==============================================================================
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.hover.Opts*
    Extends: |vim.lsp.util.open_floating_preview.Opts|


    Fields: ~
      • {silent}?  (`boolean`)

*vim.lsp.buf.signature_help.Opts*
    Extends: |vim.lsp.util.open_floating_preview.Opts|


    Fields: ~
      • {silent}?  (`boolean`)


                                          *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

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|.

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 ~= "ts_ls" 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({config})                                          *vim.lsp.buf.hover()*
    Displays hover information about the symbol under the cursor in a floating
    window. The window will be dismissed on cursor move. Calling the function
    twice will jump into the floating window (thus by default, "KK" will open
    the hover window and focus it). In the floating window, all commands and
    mappings are available as usual, except that "q" dismisses the window. You
    can scroll the contents the same as you would any other buffer.

    Note: to disable hover highlights, add the following to your config: >lua
        vim.api.nvim_create_autocmd('ColorScheme', {
          callback = function()
            vim.api.nvim_set_hl(0, 'LspReferenceTarget', {})
          end,
        })
<

    Parameters: ~
      • {config}  (`vim.lsp.buf.hover.Opts?`) See |vim.lsp.buf.hover.Opts|.

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}  (`lsp.ReferenceContext?`) 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({config})                        *vim.lsp.buf.signature_help()*
    Displays signature information about the symbol under the cursor in a
    floating window.

    Parameters: ~
      • {config}  (`vim.lsp.buf.signature_help.Opts?`) See
                  |vim.lsp.buf.signature_help.Opts|.

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*

from({diagnostics})                                *vim.lsp.diagnostic.from()*
    Converts the input `vim.Diagnostic`s to LSP diagnostics.

    Parameters: ~
      • {diagnostics}  (`vim.Diagnostic[]`)

    Return: ~
        (`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({error}, {result}, {ctx})
    |lsp-handler| for the method "textDocument/diagnostic"

    See |vim.diagnostic.config()| for configuration options.

    Parameters: ~
      • {error}   (`lsp.ResponseError?`)
      • {result}  (`lsp.DocumentDiagnosticReport`)
      • {ctx}     (`lsp.HandlerContext`)

                                 *vim.lsp.diagnostic.on_publish_diagnostics()*
on_publish_diagnostics({_}, {result}, {ctx})
    |lsp-handler| for the method "textDocument/publishDiagnostics"

    See |vim.diagnostic.config()| for configuration options.

    Parameters: ~
      • {result}  (`lsp.PublishDiagnosticsParams`)
      • {ctx}     (`lsp.HandlerContext`)


==============================================================================
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`) Default: false When true, completion
                        triggers automatically based on the server's
                        `triggerCharacters`.
      • {convert}?      (`fun(item: lsp.CompletionItem): table`) Transforms an
                        LSP CompletionItem to |complete-items|.


                                                 *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())
<

    Attributes: ~
        Since: 0.10.0

    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,
        })
<

    Attributes: ~
        Since: 0.10.0

    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

    Attributes: ~
        Since: 0.10.0

    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.hl.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.util                                            *lsp-util*

*vim.lsp.util.open_floating_preview.Opts*

    Fields: ~
      • {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}
      • {offset_x}?      (`integer`) offset to add to `col`
      • {offset_y}?      (`integer`) offset to add to `row`
      • {border}?        (`string|(string|[string,string])[]`) override
                         `border`
      • {zindex}?        (`integer`) override `zindex`, defaults to 50
      • {title}?         (`string`)
      • {title_pos}?     (`'left'|'center'|'right'`)
      • {relative}?      (`'mouse'|'cursor'`) (default: `'cursor'`)
      • {anchor_bias}?   (`'auto'|'above'|'below'`, default: `'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.


                                     *vim.lsp.util.apply_text_document_edit()*
apply_text_document_edit({text_document_edit}, {index}, {position_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)
      • {position_encoding}   (`'utf-8'|'utf-16'|'utf-32'?`)

    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}, {position_encoding})
    Applies a list of text edits to a buffer.

    Parameters: ~
      • {text_edits}         (`lsp.TextEdit[]`)
      • {bufnr}              (`integer`) Buffer id
      • {position_encoding}  (`'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}, {position_encoding})
    Applies a `WorkspaceEdit`.

    Parameters: ~
      • {workspace_edit}     (`lsp.WorkspaceEdit`)
      • {position_encoding}  (`'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}, {position_encoding})
    Shows a list of document highlights for a certain buffer.

    Parameters: ~
      • {bufnr}              (`integer`) Buffer id
      • {references}         (`lsp.DocumentHighlight[]`) objects to highlight
      • {position_encoding}  (`'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}  (`'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}        (`string[]?`) list of trigger characters from the
                          lsp server. used to better determine parameter
                          offsets

    Return (multiple): ~
        (`string[]?`) lines of converted markdown.
        (`Range4?`) highlight range for the active parameter

    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.locations_to_items()*
locations_to_items({locations}, {position_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[]`)
      • {position_encoding}  (`'utf-8'|'utf-16'|'utf-32'?`) default to first
                             client of buffer

    Return: ~
        (`vim.quickfix.entry[]`) See |setqflist()| for the format

                                  *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}    (`vim.lsp.util.open_floating_preview.Opts?`) See
                  |vim.lsp.util.open_floating_preview.Opts|.

    Return: ~
        (`vim.api.keyset.win_config`)

                                       *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}, {position_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,integer]?`) {row,col} mark-indexed
                             position. Defaults to the start of the last
                             visual selection.
      • {end_pos}            (`[integer,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
      • {position_encoding}  (`'utf-8'|'utf-16'|'utf-32'`)

    Return: ~
        (`{ textDocument: { uri: lsp.DocumentUri }, range: lsp.Range }`)

                                         *vim.lsp.util.make_position_params()*
make_position_params({window}, {position_encoding})
    Creates a `TextDocumentPositionParams` object for the current buffer and
    cursor position.

    Parameters: ~
      • {window}             (`integer?`) window handle or 0 for current,
                             defaults to current
      • {position_encoding}  (`'utf-8'|'utf-16'|'utf-32'`)

    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}, {position_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
      • {position_encoding}  (`"utf-8"|"utf-16"|"utf-32"`)

    Return: ~
        (`{ textDocument: { uri: lsp.DocumentUri }, range: lsp.Range }`)

                                    *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}      (`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()|). See
                    |vim.lsp.util.open_floating_preview.Opts|.

    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}      (`vim.lsp.util.open_floating_preview.Opts?`) See
                    |vim.lsp.util.open_floating_preview.Opts|.

    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}, {position_encoding}, {opts})
    Shows document and optionally jumps to the location.

    Parameters: ~
      • {location}           (`lsp.Location|lsp.LocationLink`)
      • {position_encoding}  (`'utf-8'|'utf-16'|'utf-32'?`)
      • {opts}               (`table?`) A table with the following fields:
                             • {reuse_win}? (`boolean`) Jump to existing
                               window if buffer is already open.
                             • {focus}? (`boolean`) Whether to focus/jump to
                               location if possible. (defaults: 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}  (`lsp.DocumentSymbol[]|lsp.SymbolInformation[]`)
      • {bufnr}    (`integer?`)

    Return: ~
        (`vim.quickfix.entry[]`) See |setqflist()| for the format


==============================================================================
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: ~
        (`boolean`) 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(message_id: 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()|.

    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


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