9da3ffee41
This is a massive diff that I had to do in a hurry - when leaving Urbint. I'm pretty sure that most of these are updating Emacs packages, but I'm not positive.
193 lines
7.3 KiB
EmacsLisp
Executable file
193 lines
7.3 KiB
EmacsLisp
Executable file
;; Copyright (C) 2016-2018 Vibhav Pant <vibhavp@gmail.com> -*- lexical-binding: t -*-
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;; This program is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with this program. If not, see <http://www.gnu.org/licenses/>.
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;;; Code:
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(require 'compile)
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(require 'url-util)
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(require 'url-parse)
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(require 'seq)
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(require 'subr-x)
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(require 'filenotify)
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(require 'cl)
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(defconst lsp--message-type-face
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`((1 . ,compilation-error-face)
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(2 . ,compilation-warning-face)
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(3 . ,compilation-message-face)
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(4 . ,compilation-info-face)))
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(defcustom lsp-print-io nil
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"If non-nil, print all messages to and from the language server to *Messages*."
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:group 'lsp-mode
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:type 'boolean)
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(defvar-local lsp--cur-workspace nil)
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(defvar lsp--uri-file-prefix (pcase system-type
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(`windows-nt "file:///")
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(_ "file://"))
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"Prefix for a file-uri.")
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(defvar-local lsp-buffer-uri nil
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"If set, return it instead of calculating it using `buffer-file-name'.")
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(define-error 'lsp-error "Unknown lsp-mode error")
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(define-error 'lsp-empty-response-error
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"Empty response from the language server" 'lsp-error)
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(define-error 'lsp-timed-out-error
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"Timed out while waiting for a response from the language server" 'lsp-error)
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(define-error 'lsp-capability-not-supported
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"Capability not supported by the language server" 'lsp-error)
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(defun lsp--propertize (str type)
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"Propertize STR as per TYPE."
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(propertize str 'face (alist-get type lsp--message-type-face)))
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(defvar lsp--no-response)
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;; from http://emacs.stackexchange.com/questions/8082/how-to-get-buffer-position-given-line-number-and-column-number
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(defun lsp--position-to-point (params)
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"Convert Position object in PARAMS to a point."
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(save-excursion
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(save-restriction
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(widen)
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(goto-char (point-min))
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(forward-line (gethash "line" params))
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(forward-char (gethash "character" params))
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(point))))
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;;; TODO: Use the current LSP client name instead of lsp-mode for the type.
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(defun lsp-warn (message &rest args)
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"Display a warning message made from (`format-message' MESSAGE ARGS...).
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This is equivalent to `display-warning', using `lsp-mode' as the type and
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`:warning' as the level."
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(display-warning 'lsp-mode (apply #'format-message message args)))
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(defvar lsp-message-project-root-warning nil
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"Output the project root warning as a message and not to the *Warnings* buffer.")
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(defun lsp-make-traverser (name)
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"Return a closure that walks up the current directory until NAME is found.
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NAME can either be a string or a predicate used for `locate-dominating-file'.
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The value returned by the function will be the directory name for NAME.
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If no such directory could be found, log a warning and return `default-directory'"
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(lambda ()
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(let ((dir (locate-dominating-file "." name)))
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(if dir
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(file-truename dir)
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(if lsp-message-project-root-warning
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(message "Couldn't find project root, using the current directory as the root.")
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(lsp-warn "Couldn't find project root, using the current directory as the root.")
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default-directory)))))
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(defun lsp--get-uri-handler (scheme)
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"Get uri handler for SCHEME in the current workspace."
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(when lsp--cur-workspace
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(gethash scheme (lsp--client-uri-handlers
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(lsp--workspace-client lsp--cur-workspace)))))
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(defun lsp--uri-to-path (uri)
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"Convert URI to a file path."
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(let* ((url (url-generic-parse-url (url-unhex-string uri)))
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(type (url-type url))
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(file (url-filename url)))
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(if (and type (not (string= type "file")))
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(let ((handler (lsp--get-uri-handler type)))
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(if handler
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(funcall handler uri)
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(error "Unsupported file scheme: %s" uri)))
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;; `url-generic-parse-url' is buggy on windows:
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;; https://github.com/emacs-lsp/lsp-mode/pull/265
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(or (and (eq system-type 'windows-nt)
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(eq (elt file 0) ?\/)
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(substring file 1))
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file))))
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(define-inline lsp--buffer-uri ()
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"Return URI of the current buffer."
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(inline-quote
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(or lsp-buffer-uri (lsp--path-to-uri buffer-file-name))))
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(define-inline lsp--path-to-uri (path)
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"Convert PATH to a uri."
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(inline-quote
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(concat lsp--uri-file-prefix
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(url-hexify-string (file-truename ,path) url-path-allowed-chars))))
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(defun lsp--string-match-any (regex-list str)
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"Given a list of REGEX-LIST and STR return the first matching regex if any."
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(find-if (lambda (regex) (string-match regex str)) regex-list))
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(defun lsp-create-watch (dir file-regexp-list callback &optional watches root-dir)
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"Create recursive file notificaton watch in DIR monitoring FILE-REGEXP-LIST.
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CALLBACK is the will be called when there are changes in any of
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the monitored files. WATCHES is a hash table directory->file
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notification handle which contains all of the watches that
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already have been created. "
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(let ((all-dirs (thread-last
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(directory-files-recursively dir ".*" t)
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(seq-filter (lambda (f) (file-directory-p f)))
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(list* dir)))
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(watches (or watches (make-hash-table :test 'equal)))
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(root-dir (or root-dir dir)))
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(seq-do
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(lambda (dir-to-watch)
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(puthash
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dir-to-watch
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(file-notify-add-watch
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dir-to-watch
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'(change)
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(lambda (event)
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(let ((file-name (caddr event))
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(event-type (cadr event)))
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(cond
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((and (file-directory-p file-name)
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(equal 'created event-type))
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(lsp-create-watch file-name file-regexp-list callback watches root-dir)
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;; process the files that are already present in
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;; the directory.
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(thread-last
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(directory-files-recursively file-name ".*" t)
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(seq-do (lambda (f)
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(when (and (lsp--string-match-any
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file-regexp-list
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(concat "/" (file-relative-name f root-dir)))
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(not (file-directory-p f)))
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(funcall callback (list nil 'created f)))))))
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((and (not (file-directory-p file-name))
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(lsp--string-match-any
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file-regexp-list
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(concat "/" (file-relative-name file-name root-dir))))
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(funcall callback event))))))
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watches))
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all-dirs)
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watches))
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(defun lsp-kill-watch (watches)
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"Delete WATCHES."
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(maphash
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(lambda (_dir watch)
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(file-notify-rm-watch watch))
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watches))
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(declare-function lsp--workspace-client "lsp-methods" (cl-x))
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(declare-function lsp--client-uri-handlers "lsp-methods" (cl-x))
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(provide 'lsp-common)
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;;; lsp-common.el ends here
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