e852ac0469
Not a perfect solution, but it'll do while I figure out a better solution for set-company-backends!'s inflexibility.
194 lines
8.2 KiB
EmacsLisp
194 lines
8.2 KiB
EmacsLisp
;;; tools/lsp/+lsp.el -*- lexical-binding: t; -*-
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(defvar +lsp-company-backends 'company-capf
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"The backends to prepend to `company-backends' in `lsp-mode' buffers.
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Can be a list of backends; accepts any value `company-backends' accepts.")
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;;
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;;; Packages
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(use-package! lsp-mode
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:commands lsp-install-server
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:init
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(setq lsp-session-file (concat doom-etc-dir "lsp-session"))
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;; Auto-kill LSP server after last workspace buffer is killed.
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(setq lsp-keep-workspace-alive nil)
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;; For `lsp-clients'
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(setq lsp-server-install-dir (concat doom-etc-dir "lsp/")
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lsp-intelephense-storage-path (concat doom-cache-dir "lsp-intelephense/"))
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(when (featurep! :config default +bindings)
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;; Let doom bind the lsp keymap.
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(setq lsp-keymap-prefix nil))
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;; Disable LSP's superfluous, expensive and/or debatably unnecessary features.
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;; Some servers implement these poorly. Better to just rely on Emacs' native
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;; mechanisms and make these opt-in.
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(setq lsp-enable-folding nil
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;; HACK Fix #2911, until it is resolved upstream. Links come in
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;; asynchronously from the server, but lsp makes no effort to
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;; "select" the original buffer before laying them down, so they
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;; could be rendered in the wrong buffer (like the minibuffer).
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lsp-enable-links nil
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;; Potentially slow
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lsp-enable-file-watchers nil
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lsp-enable-text-document-color nil
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lsp-enable-semantic-highlighting nil
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;; Don't modify our code without our permission
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lsp-enable-indentation nil
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lsp-enable-on-type-formatting nil
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;; capf is the preferred completion mechanism for lsp-mode now
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lsp-prefer-capf t)
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:config
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(set-popup-rule! "^\\*lsp-help" :size 0.35 :quit t :select t)
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(set-lookup-handlers! 'lsp-mode :async t
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:documentation #'lsp-describe-thing-at-point
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:definition #'lsp-find-definition
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:implementations #'lsp-find-implementation
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:type-definition #'lsp-find-type-definition
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:references #'lsp-find-references)
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;; TODO Lazy load these. They don't need to be loaded all at once unless the
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;; user uses `lsp-install-server'.
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(when lsp-auto-configure
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(mapc (lambda (package) (require package nil t))
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lsp-client-packages))
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(defadvice! +lsp-init-a (&optional arg)
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"Enable `lsp-mode' in the current buffer.
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Meant to gimp `lsp', which is too eager about installing LSP servers, or
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prompting to do so, or complaining about no LSP servers, or initializing
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lsp-ui-mode, company, yasnippet and flycheck. We want LSP to work only if the
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server is present, and for server installation to be a deliberate act by the
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end-user. Also, setting up these other packages are handled by their respective
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modules.
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Also see:
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+ `+lsp-init-company-h' (on `lsp-mode-hook')
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+ `+lsp-init-flycheck-or-flymake-h' (on `lsp-mode-hook')
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This also logs the resolved project root, if found, so we know where we are."
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:override #'lsp
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(interactive "P")
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(and (buffer-file-name (buffer-base-buffer))
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(require 'lsp-mode nil t)
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(setq-local
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lsp--buffer-workspaces
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(or (lsp--try-open-in-library-workspace)
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(lsp--try-project-root-workspaces
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(equal arg '(4))
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(and arg (not (equal arg 1))))))
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;; read-process-output-max is only available on recent
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;; development builds of Emacs 27 and above
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(or (not (boundp 'read-process-output-max))
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(setq-local read-process-output-max (* 1024 1024)))
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;; REVIEW LSP causes a lot of allocations, with or without Emacs 27+'s
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;; native JSON library, so we up the GC threshold to stave off
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;; GC-induced slowdowns/freezes.
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(setq-local gcmh-high-cons-threshold (* 2 gcmh-high-cons-threshold))
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(prog1 (lsp-mode 1)
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(setq-local lsp-buffer-uri (lsp--buffer-uri))
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;; Announce what project root we're using, for diagnostic purposes
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(if-let (root (lsp--calculate-root (lsp-session) (buffer-file-name)))
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(lsp--info "Guessed project root is %s" (abbreviate-file-name root))
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(lsp--info "Could not guess project root."))
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(lsp--info "Connected to %s."
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(apply #'concat
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(mapcar
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(lambda (it) (format "[%s]" (lsp--workspace-print it)))
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lsp--buffer-workspaces))))))
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(when (featurep! :config default +bindings)
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(dolist (leader-key (list doom-leader-key doom-leader-alt-key))
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(let ((lsp-keymap-prefix (concat leader-key " c l")))
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(lsp-enable-which-key-integration))))
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(add-hook! 'lsp-mode-hook
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(defun +lsp-init-company-h ()
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(if (not (bound-and-true-p company-mode))
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(add-hook 'company-mode-hook #'+lsp-init-company-h t t)
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;; Ensure `company-capf' is at the front of `company-backends'
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(setq-local company-backends
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(cons +lsp-company-backends
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(remove +lsp-company-backends
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(remq 'company-capf company-backends))))
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(remove-hook 'company-mode-hook #'+lsp-init-company-h t)))
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(defun +lsp-init-flycheck-or-flymake-h ()
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"Set up flycheck-mode or flymake-mode, depending on `lsp-diagnostic-package'."
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(pcase lsp-diagnostic-package
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((or :auto 'nil) ; try flycheck, fall back to flymake
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(let ((lsp-diagnostic-package
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(if (require 'flycheck nil t) :flycheck :flymake)))
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(+lsp-init-flycheck-or-flymake-h)))
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((or :flymake 't)
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(lsp--flymake-setup))
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(:flycheck
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;; Ensure file/dir local `flycheck-checker' is respected
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(unless flycheck-checker
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(if (flycheck-checker-supports-major-mode-p 'lsp major-mode)
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(lsp-flycheck-enable)
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(let ((old-checker (flycheck-get-checker-for-buffer)))
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(lsp-flycheck-enable)
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(when old-checker
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(flycheck-add-next-checker 'lsp old-checker))))
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(kill-local-variable 'flycheck-checker))))))
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(defvar +lsp--deferred-shutdown-timer nil)
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(defadvice! +lsp-defer-server-shutdown-a (orig-fn &optional restart)
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"Defer server shutdown for a few seconds.
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This gives the user a chance to open other project files before the server is
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auto-killed (which is a potentially expensive process)."
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:around #'lsp--shutdown-workspace
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(if (or lsp-keep-workspace-alive
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restart
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(null +lsp-defer-shutdown)
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(= +lsp-defer-shutdown 0))
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(funcall orig-fn restart)
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(when (timerp +lsp--deferred-shutdown-timer)
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(cancel-timer +lsp--deferred-shutdown-timer))
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(setq +lsp--deferred-shutdown-timer
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(run-at-time
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(if (numberp +lsp-defer-shutdown) +lsp-defer-shutdown 3)
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nil (lambda (workspace)
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(let ((lsp--cur-workspace workspace))
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(unless (lsp--workspace-buffers lsp--cur-workspace)
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(funcall orig-fn))))
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lsp--cur-workspace))))
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;; Don't prompt to restart LSP servers while quitting Emacs
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(add-hook! 'kill-emacs-hook (setq lsp-restart 'ignore)))
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(use-package! lsp-ui
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:hook (lsp-mode . lsp-ui-mode)
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:config
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(setq lsp-ui-doc-max-height 8
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lsp-ui-doc-max-width 35
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lsp-ui-sideline-ignore-duplicate t
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;; lsp-ui-doc is redundant with and more invasive than
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;; `+lookup/documentation'
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lsp-ui-doc-enable nil
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;; Don't show symbol definitions in the sideline. They are pretty noisy,
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;; and there is a bug preventing Flycheck errors from being shown (the
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;; errors flash briefly and then disappear).
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lsp-ui-sideline-show-hover nil)
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(when (featurep! +peek)
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(set-lookup-handlers! 'lsp-ui-mode :async t
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:definition 'lsp-ui-peek-find-definitions
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:implementations 'lsp-ui-peek-find-implementation
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:references 'lsp-ui-peek-find-references)))
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(use-package! helm-lsp
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:when (featurep! :completion helm)
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:commands helm-lsp-workspace-symbol helm-lsp-global-workspace-symbol)
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(use-package! lsp-ivy
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:when (featurep! :completion ivy)
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:commands lsp-ivy-workspace-symbol lsp-ivy-global-workspace-symbol)
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