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lsp-mode.el
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;;; lsp-mode.el --- LSP mode -*- lexical-binding: t; -*-
;; Copyright (C) 2019 Vibhav Pant, Ivan Yonchovski
;; Author: Vibhav Pant, Fangrui Song, Ivan Yonchovski
;; Keywords: languages
;; Package-Requires: ((emacs "25.1") (dash "2.14.1") (dash-functional "2.14.1") (f "0.20.0") (ht "2.0") (spinner "1.7.3") (markdown-mode "2.3") (lv "0"))
;; Version: 6.2.1
;; URL: https://github.com/emacs-lsp/lsp-mode
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; Emacs client/library for the Language Server Protocol
;;; Code:
(require 'bindat)
(require 'cl-generic)
(require 'cl-lib)
(require 'compile)
(require 'dash)
(require 'dash-functional)
(require 'em-glob)
(require 'ewoc)
(require 'f)
(require 'filenotify)
(require 'files)
(require 'ht)
(require 'imenu)
(require 'inline)
(require 'json)
(require 'lv)
(require 'markdown-mode)
(require 'network-stream)
(require 'pcase)
(require 'rx)
(require 's)
(require 'seq)
(require 'spinner)
(require 'subr-x)
(require 'tree-widget)
(require 'url-parse)
(require 'url-util)
(require 'widget)
(require 'xref)
(require 'minibuffer)
(require 'yasnippet nil t)
(declare-function company-mode "ext:company")
(declare-function company-doc-buffer "ext:company")
(declare-function evil-set-command-property "ext:evil-common")
(declare-function projectile-project-root "ext:projectile")
(declare-function yas-expand-snippet "ext:yasnippet")
(defvar company-backends)
(defvar c-basic-offset)
(defconst lsp--message-type-face
`((1 . ,compilation-error-face)
(2 . ,compilation-warning-face)
(3 . ,compilation-message-face)
(4 . ,compilation-info-face)))
(defconst lsp--errors
'((-32700 "Parse Error")
(-32600 "Invalid Request")
(-32601 "Method not Found")
(-32602 "Invalid Parameters")
(-32603 "Internal Error")
(-32099 "Server Start Error")
(-32000 "Server End Error")
(-32002 "Server Not Initialized")
(-32001 "Unknown Error Code")
(-32800 "Request Cancelled"))
"Alist of error codes to user friendly strings.")
(defconst lsp--completion-item-kind
[nil
"Text"
"Method"
"Function"
"Constructor"
"Field"
"Variable"
"Class"
"Interface"
"Module"
"Property"
"Unit"
"Value"
"Enum"
"Keyword"
"Snippet"
"Color"
"File"
"Reference"
"Folder"
"EnumMember"
"Constant"
"Struct"
"Event"
"Operator"
"TypeParameter"])
(defconst lsp--empty-ht (make-hash-table))
(define-obsolete-variable-alias 'lsp-print-io 'lsp-log-io "lsp-mode 6.1")
(defcustom lsp-log-io nil
"If non-nil, log all messages to and from the language server to a *lsp-log* buffer."
:group 'lsp
:type 'boolean)
(defcustom lsp-print-performance nil
"If non-nil, print performance info in the logs."
:group 'lsp-mode
:type 'boolean
:package-version '(lsp-mode . "6.1"))
(defcustom lsp-log-max message-log-max
"Maximum number of lines to keep in the log buffer.
If nil, disable message logging. If t, log messages but don’t truncate
the buffer when it becomes large."
:group 'lsp-mode
:type '(choice (const :tag "Disable" nil)
(integer :tag "lines")
(const :tag "Unlimited" t))
:package-version '(lsp-mode . "6.1"))
(defcustom lsp-io-messages-max t
"Maximum number of messages that can be locked in a `lsp-io' buffer."
:group 'lsp-mode
:type '(choice (const :tag "Unlimited" t)
(integer :tag "Messages"))
:package-version '(lsp-mode . "6.1"))
(defcustom lsp-report-if-no-buffer t
"If non nil the errors will be reported even when the file is not open."
:type 'boolean
:group 'lsp-mode)
(defcustom lsp-keep-workspace-alive t
"If non nil keep workspace alive when the last workspace buffer is closed."
:group 'lsp-mode
:type 'boolean)
(defcustom lsp-enable-snippet t
"Enable/disable snippet completion support."
:group 'lsp-mode
:type 'boolean)
(defcustom lsp-enable-folding t
"Enable/disable code folding support."
:group 'lsp-mode
:type 'boolean
:package-version '(lsp-mode . "6.1"))
(defcustom lsp-semantic-highlighting nil
"When set to `:immediate' or `:deferred', this option enables
semantic highlighting as proposed at
https://github.com/microsoft/vscode-languageserver-node/pull/367.
If `lsp-semantic-highlighting' is set to `:immediate', semantic
highlighting information received from the language server is
applied immediately, and in full. If `lsp-semantic-highlighting'
is set to `:deferred', semantic higlighting will be performed
after an idle timeout, and only within a limit region
around `(point)' (see
`lsp-semantic-highlighting-context-lines'). Compared to
`:immediate', `:deferred' has a higher risk of producing stale
highlights but may offer significantly better performance.
Note that semantic highlighting is not yet part of the official
LSP spec and may occasionally break as language servers are
updated."
:group 'lsp-mode
:type '(choice
(const :tag "Disable" nil)
(const :tag "Immediate" :immediate)
(const :tag "Deferred" :deferred)))
(defcustom lsp-semantic-highlighting-context-lines 15
"How many lines to fontify above `(window-start)' and below `(window-end)'."
:group 'lsp-mode
:type 'number)
(defcustom lsp-folding-range-limit nil
"The maximum number of folding ranges to receive from the language server."
:group 'lsp-mode
:type '(choice (const :tag "No limit." nil)
(integer :tag "Number of lines."))
:package-version '(lsp-mode . "6.1"))
(defcustom lsp-folding-line-folding-only nil
"If non-nil, only fold complete lines."
:group 'lsp-mode
:type 'boolean
:package-version '(lsp-mode . "6.1"))
(defcustom lsp-client-packages
'(ccls cquery lsp-clients lsp-clojure lsp-csharp lsp-css lsp-dart lsp-elm
lsp-erlang lsp-eslint lsp-fsharp lsp-gdscript lsp-go lsp-haskell lsp-haxe
lsp-intelephense lsp-java lsp-json lsp-metals lsp-perl lsp-pwsh lsp-pyls
lsp-python-ms lsp-rust lsp-solargraph lsp-terraform lsp-verilog lsp-vetur
lsp-vhdl lsp-xml lsp-yaml)
"List of the clients to be automatically required."
:group 'lsp-mode
:type '(repeat symbol))
(defvar-local lsp--cur-workspace nil)
(defvar-local lsp--cur-version 0)
(defvar lsp--uri-file-prefix (pcase system-type
(`windows-nt "file:///")
(_ "file://"))
"Prefix for a file-uri.")
(defvar-local lsp-buffer-uri nil
"If set, return it instead of calculating it using `buffer-file-name'.")
(define-error 'lsp-error "Unknown lsp-mode error")
(define-error 'lsp-empty-response-error
"Empty response from the language server" 'lsp-error)
(define-error 'lsp-timed-out-error
"Timed out while waiting for a response from the language server" 'lsp-error)
(define-error 'lsp-capability-not-supported
"Capability not supported by the language server" 'lsp-error)
(define-error 'lsp-file-scheme-not-supported
"Unsupported file scheme" 'lsp-error)
(define-error 'lsp-client-already-exists-error
"A client with this server-id already exists" 'lsp-error)
(define-error 'lsp-no-code-actions
"No code actions" 'lsp-error)
(defcustom lsp-auto-guess-root nil
"Automatically guess the project root using projectile/project.
Do *not* use this setting unless you are familiar with `lsp-mode'
internals and you are sure that all of your projects are
following `projectile'/`project.el' conventions."
:group 'lsp-mode
:type 'boolean)
(defcustom lsp-restart 'interactive
"Defines how server exited event must be handled."
:group 'lsp-mode
:type '(choice (const interactive)
(const auto-restart)
(const ignore)))
(defcustom lsp-session-file (expand-file-name (locate-user-emacs-file ".lsp-session-v1"))
"File where session information is stored."
:group 'lsp-mode
:type 'file)
(defcustom lsp-auto-configure t
"Auto configure `lsp-mode'.
When set to t `lsp-mode' will auto-configure `company',
`flycheck', `flymake', `imenu', symbol highlighting, lenses,
links, and so on. For finer granularity you may use `lsp-enable-*' properties."
:group 'lsp-mode
:type 'boolean
:package-version '(lsp-mode . "6.1"))
(defcustom lsp-disabled-clients nil
"A list of disabled/blacklisted clients.
Each entry in the list can be either:
a symbol, the server-id for the LSP client, or
a cons pair (MAJOR-MODE . CLIENTS), where MAJOR-MODE is the major-mode,
and CLIENTS is either a client or a list of clients.
This option can also be used as a file or directory local variable to
disable a language server for individual files or directories/projects
respectively."
:group 'lsp-mode
:type 'list
:safe 'listp
:package-version '(lsp-mode . "6.1"))
(defvar lsp-clients (make-hash-table :test 'eql)
"Hash table server-id -> client.
It contains all of the clients that are currently registered.")
(defvar lsp-enabled-clients nil
"List of clients allowed to be used for projects.
When nil, all registered clients are considered candidates.")
(defvar lsp-last-id 0
"Last request id.")
(defcustom lsp-before-initialize-hook nil
"List of functions to be called before a Language Server has been initialized for a new workspace."
:type 'hook
:group 'lsp-mode)
(defcustom lsp-after-initialize-hook nil
"List of functions to be called after a Language Server has been initialized for a new workspace."
:type 'hook
:group 'lsp-mode)
(defcustom lsp-before-open-hook nil
"List of functions to be called before a new file with LSP support is opened."
:type 'hook
:group 'lsp-mode)
(defcustom lsp-after-open-hook nil
"List of functions to be called after a new file with LSP support is opened."
:type 'hook
:group 'lsp-mode)
(defcustom lsp-enable-file-watchers t
"If non-nil lsp-mode will watch the files in the workspace if
the server has requested that."
:type 'boolean
:group 'lsp-mode
:package-version '(lsp-mode . "6.1"))
;;;###autoload(put 'lsp-enable-file-watchers 'safe-local-variable #'booleanp)
(defcustom lsp-file-watch-ignored '(; SCM tools
"[/\\\\]\\.git$"
"[/\\\\]\\.hg$"
"[/\\\\]\\.bzr$"
"[/\\\\]_darcs$"
"[/\\\\]\\.svn$"
"[/\\\\]_FOSSIL_$"
;; IDE tools
"[/\\\\]\\.idea$"
"[/\\\\]\\.ensime_cache$"
"[/\\\\]\\.eunit$"
"[/\\\\]node_modules$"
"[/\\\\]\\.fslckout$"
"[/\\\\]\\.tox$"
"[/\\\\]\\.stack-work$"
"[/\\\\]\\.bloop$"
"[/\\\\]\\.metals$"
"[/\\\\]target$"
"[/\\\\]\\.ccls-cache$"
;; Autotools output
"[/\\\\]\\.deps$"
"[/\\\\]build-aux$"
"[/\\\\]autom4te.cache$"
"[/\\\\]\\.reference$")
"List of regexps matching directory paths which won't be monitored when creating file watches."
:group 'lsp-mode
:type '(repeat string)
:package-version '(lsp-mode . "6.1"))
(defun lsp-file-watch-ignored ()
lsp-file-watch-ignored)
;; Allow lsp-file-watch-ignored as a file or directory-local variable
(put 'lsp-file-watch-ignored 'safe-local-variable 'lsp--string-listp)
(defcustom lsp-after-uninitialized-functions nil
"List of functions to be called after a Language Server has been uninitialized."
:type 'hook
:group 'lsp-mode
:package-version '(lsp-mode . "6.3"))
(defconst lsp--sync-none 0)
(defconst lsp--sync-full 1)
(defconst lsp--sync-incremental 2)
(defcustom lsp-debounce-full-sync-notifications t
"If non-nil debounce full sync events.
This flag affects only server which do not support incremental update."
:type 'boolean
:group 'lsp-mode
:package-version '(lsp-mode . "6.1"))
(defcustom lsp-debounce-full-sync-notifications-interval 1.0
"Time to wait before sending full sync synchronization after buffer modification."
:type 'float
:group 'lsp-mode
:package-version '(lsp-mode . "6.1"))
(defvar lsp--stderr-index 0)
(defvar lsp--delayed-requests nil)
(defvar lsp--delay-timer nil)
(defgroup lsp-mode nil
"Language Server Protocol client."
:group 'tools
:tag "Language Server")
(defgroup lsp-faces nil
"Faces."
:group 'lsp-mode
:tag "Faces")
(defcustom lsp-document-sync-method nil
"How to sync the document with the language server."
:type '(choice (const :tag "Documents should not be synced at all." nil)
(const :tag "Documents are synced by always sending the full content of the document." lsp--sync-full)
(const :tag "Documents are synced by always sending incremental changes to the document." lsp--sync-incremental)
(const :tag "Use the method recommended by the language server." nil))
:group 'lsp-mode)
(defcustom lsp-auto-execute-action t
"Auto-execute single action."
:type 'boolean
:group 'lsp-mode)
(defcustom lsp-enable-links t
"If non-nil, all references to links in a file will be made clickable, if supported by the language server."
:type 'boolean
:group 'lsp-mode
:package-version '(lsp-mode . "6.1"))
(defcustom lsp-enable-imenu t
"If non-nil, automatically enable `imenu' integration when server provides `textDocument/documentSymbol'."
:type 'boolean
:group 'lsp-mode
:package-version '(lsp-mode . "6.2"))
(defcustom lsp-links-check-internal 0.1
"The interval for updating document links."
:group 'lsp-mode
:type 'float)
(defcustom lsp-eldoc-enable-hover t
"If non-nil, eldoc will display hover info when it is present."
:type 'boolean
:group 'lsp-mode)
(defcustom lsp-eldoc-render-all nil
"Display all of the info returned by document/onHover.
If this is set to nil, `eldoc' will show only the symbol information."
:type 'boolean
:group 'lsp-mode)
(defcustom lsp-enable-completion-at-point t
"Enable `completion-at-point' integration."
:type 'boolean
:group 'lsp-mode)
(defcustom lsp-enable-symbol-highlighting t
"Highlight references of the symbol at point."
:type 'boolean
:group 'lsp-mode)
(defcustom lsp-enable-xref t
"Enable xref integration."
:type 'boolean
:group 'lsp-mode)
(defcustom lsp-enable-indentation t
"Indent regions using the file formatting functionality provided by the language server."
:type 'boolean
:group 'lsp-mode)
(defcustom lsp-enable-on-type-formatting t
"Enable `textDocument/onTypeFormatting' integration."
:type 'boolean
:group 'lsp-mode)
(defcustom lsp-enable-text-document-color t
"Enable `textDocument/documentColor' integration."
:type 'boolean
:group 'lsp-mode)
(defcustom lsp-before-save-edits t
"If non-nil, `lsp-mode' will apply edits suggested by the language server before saving a document."
:type 'boolean
:group 'lsp-mode)
(defcustom lsp-after-diagnostics-hook nil
"Hooks to run after diagnostics are received.
Note: it runs only if the receiving buffer is open. Use
`lsp-diagnostics-updated-hook'if you want to be notified when
diagnostics have changed."
:type 'hook
:group 'lsp-mode)
(defcustom lsp-diagnostics-updated-hook nil
"Hooks to run after diagnostics are received."
:type 'hook
:group 'lsp-mode)
(define-obsolete-variable-alias 'lsp-workspace-folders-changed-hook
'lsp-workspace-folders-changed-functions "lsp-mode 6.3")
(defcustom lsp-workspace-folders-changed-functions nil
"Hooks to run after the folders has changed.
The hook will receive two parameters list of added and removed folders."
:type 'hook
:group 'lsp-mode)
(defcustom lsp-eldoc-hook '(lsp-hover)
"Hooks to run for eldoc."
:type 'hook
:group 'lsp-mode)
(defcustom lsp-before-apply-edits-hook nil
"Hooks to run before applying edits."
:type 'hook
:group 'lsp-mode)
(defgroup lsp-imenu nil
"Imenu."
:group 'lsp-mode
:tag "Imenu")
(defcustom lsp-imenu-show-container-name t
"Display the symbol's container name in an imenu entry."
:type 'boolean
:group 'lsp-imenu)
(defcustom lsp-imenu-container-name-separator "/"
"Separator string to use to separate the container name from the symbol while displaying imenu entries."
:type 'string
:group 'lsp-imenu)
(defcustom lsp-imenu-sort-methods '(kind name)
"How to sort the imenu items.
The value is a list of `kind' `name' or `position'. Priorities
are determined by the index of the element."
:type '(repeat (choice (const name)
(const position)
(const kind))))
;; vibhavp: Should we use a lower value (5)?
(defcustom lsp-response-timeout 10
"Number of seconds to wait for a response from the language server before timing out."
:type 'number
:group 'lsp-mode)
(defcustom lsp-tcp-connection-timeout 2
"The timeout for tcp connection in seconds."
:type 'number
:group 'lsp-mode
:package-version '(lsp-mode . "6.2"))
(defconst lsp--imenu-compare-function-alist
(list (cons 'name #'lsp--imenu-compare-name)
(cons 'kind #'lsp--imenu-compare-kind)
(cons 'position #'lsp--imenu-compare-position))
"An alist of (METHOD . FUNCTION).
METHOD is one of the symbols accepted by
`lsp-imenu-sort-methods'.
FUNCTION takes two hash tables representing DocumentSymbol. It
returns a negative number, 0, or a positive number indicating
whether the first parameter is less than, equal to, or greater
than the second parameter.")
(defcustom lsp-diagnostic-package :auto
"`lsp-mode' diagnostics auto-configuration."
:type
'(choice
(const :tag "Pick flycheck if present and fallback to flymake" :auto)
(const :tag "Pick flycheck" :flycheck)
(const :tag "Pick flymake" :flymake)
(const :tag "Use neither flymake nor lsp" :none)
(const :tag "Prefer flymake" t)
(const :tag "Prefer flycheck" nil))
:group 'lsp-mode
:package-version '(lsp-mode . "6.3"))
(make-obsolete-variable 'lsp-prefer-flymake 'lsp-diagnostic-package "lsp-mode 6.2")
(defcustom lsp-prefer-capf nil
"Prefer capf."
:type 'boolean
:group 'lsp-mode
:package-version '(lsp-mode . "6.3"))
(defcustom lsp-server-trace nil
"Request tracing on the server side.
The actual trace output at each level depends on the language server in use.
Changes take effect only when a new session is started."
:type '(choice (const :tag "Disabled" "off")
(const :tag "Messages only" "messages")
(const :tag "Verbose" "verbose")
(const :tag "Default (disabled)" nil))
:group 'lsp-mode
:package-version '(lsp-mode . "6.1"))
(defvar-local lsp--flymake-report-fn nil)
(defvar lsp-language-id-configuration '((".*\\.vue$" . "vue")
(".*\\.tsx$" . "typescriptreact")
(".*\\.ts$" . "typescript")
(".*\\.jsx$" . "javascriptreact")
(".*\\.xml$" . "xml")
(".*\\.hx$" . "haxe")
(".*\\.lua$" . "lua")
(".*\\.sql$" . "sql")
(".*\\.html$" . "html")
(ada-mode . "ada")
(sql-mode . "sql")
(vimrc-mode . "vim")
(sh-mode . "shellscript")
(sh-mode . "lua")
(scala-mode . "scala")
(julia-mode . "julia")
(clojure-mode . "clojure")
(clojurec-mode . "clojure")
(clojurescript-mode . "clojurescript")
(java-mode . "java")
(groovy-mode . "groovy")
(python-mode . "python")
(lsp--render-markdown . "markdown")
(rust-mode . "rust")
(rustic-mode . "rust")
(kotlin-mode . "kotlin")
(css-mode . "css")
(less-mode . "less")
(less-css-mode . "less")
(lua-mode . "lua")
(sass-mode . "sass")
(scss-mode . "scss")
(xml-mode . "xml")
(c-mode . "c")
(c++-mode . "cpp")
(objc-mode . "objective-c")
(web-mode . "html")
(html-mode . "html")
(sgml-mode . "html")
(mhtml-mode . "html")
(go-dot-mod-mode . "go")
(go-mode . "go")
(haskell-mode . "haskell")
(hack-mode . "hack")
(php-mode . "php")
(powershell-mode . "powershell")
(json-mode . "json")
(jsonc-mode . "jsonc")
(rjsx-mode . "javascript")
(js2-mode . "javascript")
(js-mode . "javascript")
(typescript-mode . "typescript")
(fsharp-mode . "fsharp")
(reason-mode . "reason")
(caml-mode . "ocaml")
(tuareg-mode . "ocaml")
(swift-mode . "swift")
(elixir-mode . "elixir")
(conf-javaprop-mode . "spring-boot-properties")
(yaml-mode . "spring-boot-properties-yaml")
(ruby-mode . "ruby")
(enh-ruby-mode . "ruby")
(f90-mode . "fortran")
(elm-mode . "elm")
(dart-mode . "dart")
(erlang-mode . "erlang")
(dockerfile-mode . "dockerfile")
(csharp-mode . "csharp")
(plain-tex-mode . "plaintex")
(latex-mode . "latex")
(vhdl-mode . "vhdl")
(verilog-mode . "verilog")
(terraform-mode . "terraform")
(ess-r-mode . "r")
(crystal-mode . "crystal")
(nim-mode . "nim")
(dhall-mode . "dhall")
(cmake-mode . "cmake")
(purescript-mode . "purescript")
(gdscript-mode . "gdscript")
(perl-mode . "perl")
(robot-mode . "robot"))
"Language id configuration.")
(defvar lsp--last-active-workspaces nil
"Keep track of last active workspace.
We want to try the last workspace first when jumping into a library
directory")
(defvar lsp-method-requirements
'(("textDocument/callHierarchy" :capability "callHierarchyProvider")
("textDocument/codeAction" :capability "codeActionProvider")
("textDocument/codeLens" :capability "codeLensProvider")
("textDocument/completion" :capability "completionProvider")
("textDocument/declaration" :capability "declarationProvider")
("textDocument/definition" :capability "definitionProvider")
("textDocument/documentColor" :capability "colorProvider")
("textDocument/documentLink" :capability "documentLinkProvider")
("textDocument/documentHighlight" :capability "documentHighlightProvider")
("textDocument/documentSymbol" :capability "documentSymbolProvider")
("textDocument/foldingRange" :capability "foldingRangeProvider")
("textDocument/formatting" :capability "documentFormattingProvider")
("textDocument/hover" :capability "hoverProvider")
("textDocument/implementation" :capability "implementationProvider")
("textDocument/onTypeFormatting" :capability "documentOnTypeFormattingProvider")
("textDocument/prepareRename"
:check-command (lambda (workspace)
(with-lsp-workspace workspace
(let ((table (or (lsp--capability "renameProvider")
(-some-> (lsp--registered-capability "textDocument/rename")
(lsp--registered-capability-options)))))
(and (hash-table-p table)
(gethash "prepareProvider" table))))))
("textDocument/rangeFormatting" :capability "documentRangeFormattingProvider")
("textDocument/references" :capability "referencesProvider")
("textDocument/selectionRange" :capability "selectionRangeProvider")
("textDocument/signatureHelp" :capability "signatureHelpProvider")
("textDocument/typeDefinition" :capability "typeDefinitionProvider")
("workspace/executeCommand" :capability "executeCommandProvider")
("workspace/symbol" :capability "workspaceSymbolProvider"))
"Contain method to requirements mapping.
It is used by send request functions to determine which server
must be used for handling a particular message.")
(defconst lsp--file-change-type
`((created . 1)
(changed . 2)
(deleted . 3)))
(defvar lsp-window-body-width 40
"Window body width when rendering doc.")
(defface lsp-face-highlight-textual
'((t :inherit highlight))
"Face used for textual occurrences of symbols."
:group 'lsp-faces)
(defface lsp-face-highlight-read
'((t :inherit highlight :underline t))
"Face used for highlighting symbols being read."
:group 'lsp-faces)
(defface lsp-face-highlight-write
'((t :inherit highlight :weight bold))
"Face used for highlighting symbols being written to."
:group 'lsp-faces)
(defcustom lsp-lens-check-interval 0.1
"The interval for checking for changes in the buffer state."
:group 'lsp-mode
:type 'number)
(defcustom lsp-lens-auto-enable nil
"Auto lenses if server there is server support."
:group 'lsp-mode
:type 'boolean
:package-version '(lsp-mode . "6.3"))
(defcustom lsp-lens-debounce-interval 0.2
"Debounce interval for loading lenses."
:group 'lsp-mode
:type 'number)
(defcustom lsp-symbol-highlighting-skip-current nil
"If non-nil skip current symbol when setting symbol highlights."
:group 'lsp-mode
:type 'boolean)
(defcustom lsp-file-watch-threshold 1000
"Show warning if the files to watch are more than.
Set to nil to disable the warning."
:type 'number
:group 'lsp-mode)
;;;###autoload(put 'lsp-file-watch-threshold 'safe-local-variable (lambda (i) (or (numberp i) (not i))))
(defcustom lsp-completion-styles (if (version<= "27.0" emacs-version)
`(flex)
`(substring))
"List of completion styles to use for filtering completion items."
:group 'lsp-mode
:type completion--styles-type)
(defvar lsp-custom-markup-modes
'((rust-mode "no_run" "rust,no_run" "rust,ignore" "rust,should_panic"))
"Mode to uses with markdown code blocks.
They are added to `markdown-code-lang-modes'")
(defface lsp-lens-mouse-face
'((t :height 0.8 :inherit link))
"The face used for code lens overlays."
:group 'lsp-faces)
(defface lsp-lens-face
'((t :height 0.8 :inherit shadow))
"The face used for code lens overlays."
:group 'lsp-faces)
(defvar-local lsp--lens-overlays nil
"Current lenses.")
(defvar-local lsp--lens-page nil
"Pair of points which holds the last window location the lenses were loaded.")
(defvar-local lsp--lens-last-count nil
"The number of lenses the last time they were rendered.")
(defvar lsp-lens-backends '(lsp-lens-backend)
"Backends providing lenses.")
(defvar-local lsp--lens-refresh-timer nil
"Refresh timer for the lenses.")
(defvar-local lsp--lens-data nil
"Pair of points which holds the last window location the lenses were loaded.")
(defvar-local lsp--lens-backend-cache nil)
(defvar-local lsp--buffer-workspaces ()
"List of the buffer workspaces.")
(defvar lsp--session nil
"Contain the `lsp-session' for the current Emacs instance.")
(defvar lsp--tcp-port 10000)
(defvar-local lsp--document-symbols nil
"The latest document symbols.")
(defvar-local lsp--document-selection-range-cache nil
"The document selection cache.")
(defvar-local lsp--document-symbols-request-async nil
"If non-nil, request document symbols asynchronously.")
(defvar-local lsp--document-symbols-tick -1
"The value of `buffer-chars-modified-tick' when document
symbols were last retrieved.")
(defvar-local lsp--have-document-highlights nil
"Set to `t' on symbol highlighting, cleared on
`lsp--cleanup-highlights-if-needed'. Checking a separately
defined flag is substantially faster than unconditionally
calling `remove-overlays', especially when semantic
highlighting is enabled.")
;; Buffer local variable for storing number of lines.
(defvar lsp--log-lines)
(cl-defgeneric lsp-execute-command (server command arguments)
"Ask SERVER to execute COMMAND with ARGUMENTS.")
(defun lsp-elt (sequence n)
"Return Nth element of SEQUENCE or nil if N is out of range."
(cond
((listp sequence) (elt sequence n))
((arrayp sequence)
(and (> (length sequence) n) (aref sequence n)))
(t (and (> (length sequence) n) (elt sequence n)))))
;; define seq-first and seq-rest for older emacs
(defun lsp-seq-first (sequence)
"Return the first element of SEQUENCE."
(lsp-elt sequence 0))
(defun lsp-seq-rest (sequence)
"Return a sequence of the elements of SEQUENCE except the first one."
(seq-drop sequence 1))
(defun lsp--string-listp (sequence)
"Return t if all elements of SEQUENCE are strings, else nil."
(not (seq-find (lambda (x) (not (stringp x))) sequence)))
(defun lsp--string-vector-p (candidate)
"Returns true if CANDIDATE is a vector data structure and
every element of it is of type string, else nil."
(and
(vectorp candidate)
(seq-every-p #'stringp candidate)))
(define-widget 'lsp-string-vector 'lazy
"A vector of zero or more elements, every element of which is a string.
Appropriate for any language-specific `defcustom' that needs to
serialize as a JSON array of strings."
:offset 4
:tag "Vector"
:type '(restricted-sexp
:match-alternatives (lsp--string-vector-p)))
(defun lsp--info (format &rest args)
"Display lsp info message with FORMAT with ARGS."
(message "%s :: %s" (propertize "LSP" 'face 'success) (apply #'format format args)))
(defun lsp--warn (format &rest args)
"Display lsp warn message with FORMAT with ARGS."
(message "%s :: %s" (propertize "LSP" 'face 'warning) (apply #'format format args)))
(defun lsp--error (format &rest args)
"Display lsp error message with FORMAT with ARGS."
(message "%s :: %s" (propertize "LSP" 'face 'error) (apply #'format format args)))
(defun lsp--eldoc-message (&optional msg)
"Show MSG in eldoc."
(setq lsp--eldoc-saved-message msg)
(run-with-idle-timer 0 nil (lambda () (eldoc-message msg))))
(defun lsp-log (format &rest args)
"Log message to the ’*lsp-log*’ buffer.
FORMAT and ARGS i the same as for `message'."
(when lsp-log-max
(let ((log-buffer (get-buffer "*lsp-log*"))
(inhibit-read-only t))
(unless log-buffer
(setq log-buffer (get-buffer-create "*lsp-log*"))
(with-current-buffer log-buffer
(view-mode 1)
(set (make-local-variable 'lsp--log-lines) 0)))
(with-current-buffer log-buffer
(save-excursion
(let* ((message (apply 'format format args))
;; Count newlines in message.
(newlines (1+ (cl-loop with start = 0
for count from 0
while (string-match "\n" message start)
do (setq start (match-end 0))
finally return count))))
(goto-char (point-max))
;; in case the buffer is not empty insert before last \n to preserve
;; the point position(in case it is in the end)
(if (eq (point) (point-min))
(progn
(insert "\n")
(backward-char))
(backward-char)
(insert "\n"))
(insert message)
(setq lsp--log-lines (+ lsp--log-lines newlines))
(when (and (integerp lsp-log-max) (> lsp--log-lines lsp-log-max))
(let ((to-delete (- lsp--log-lines lsp-log-max)))
(goto-char (point-min))
(forward-line to-delete)
(delete-region (point-min) (point))
(setq lsp--log-lines lsp-log-max)))))))))
(defalias 'lsp-message 'lsp-log)
(defalias 'lsp-ht 'ht)
;; `file-local-name' was added in Emacs 26.1.
(defalias 'lsp-file-local-name
(if (fboundp 'file-local-name)
'file-local-name
(lambda (file)
"Return the local name component of FILE."
(or (file-remote-p file 'localname) file))))
(defun lsp--merge-results (results method)
"Merge RESULTS by filtering the empty hash-tables and merging the lists.
METHOD is the executed method so the results could be merged
depending on it."
(pcase (--map (if (vectorp it) (append it nil) it) (-filter 'identity results))
(`() ())
;; only one result - simply return it
(`(,fst) fst)
;; multiple results merge it based on strategy
(results
(pcase method
("textDocument/hover" (let ((results (seq-filter
(-compose #'not #'hash-table-empty-p)
results)))
(if (not (cdr results))
(car results)
(let ((merged (make-hash-table :test 'equal)))
(seq-each
(lambda (it)
(let ((to-add (gethash "contents" it)))
(puthash "contents"
(append
(if (and (sequencep to-add)
(not (stringp to-add)))
to-add
(list to-add))
(gethash "contents" merged))
merged)))
results)
merged))))
("textDocument/completion"
(ht
;; any incomplete
("isIncomplete" (seq-some
(-andfn #'ht? (-partial 'gethash "isIncomplete"))
results))
("items" (apply 'append (--map (append (if (ht? it)
(gethash "items" it)
it)
nil)
results)))))
(_ (apply 'append (seq-map (lambda (it)
(if (seqp it)
it
(list it)))