Update packages
This commit is contained in:
Mateus Pinto Rodrigues
128
elpa/ess-20180524.1000/lisp/ess-r-xref.el
Normal file
128
elpa/ess-20180524.1000/lisp/ess-r-xref.el
Normal file
@@ -0,0 +1,128 @@
|
||||
;;; ess-r-xref.el --- An xref backend for R. -*- lexical-binding: t -*-
|
||||
;;
|
||||
;; Author: Aaron Jacobs
|
||||
;; Created: 21 January 2018
|
||||
;; Maintainer: ESS-core <ESS-core@r-project.org>
|
||||
;;
|
||||
;; Keywords: languages, statistics, xref
|
||||
;; Package-Requires: ((emacs "25"))
|
||||
;;
|
||||
;; This file is part of ESS.
|
||||
;;
|
||||
;; This file 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 2, or (at your option)
|
||||
;; any later version.
|
||||
;;
|
||||
;; This file 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.
|
||||
;;
|
||||
;; A copy of the GNU General Public License is available at
|
||||
;; http://www.r-project.org/Licenses/
|
||||
|
||||
;;; Commentary:
|
||||
|
||||
;; This file contains an xref backend for `R-mode'.
|
||||
|
||||
;;; Code:
|
||||
|
||||
(when (>= emacs-major-version 25)
|
||||
(require 'subr-x)
|
||||
(require 'xref))
|
||||
|
||||
(require 'ess-utils)
|
||||
(require 'ess-r-package)
|
||||
(require 'ess-tracebug)
|
||||
|
||||
(defvar ess-r-xref-pkg-sources nil
|
||||
"Alist of R package->directory associations.
|
||||
This variable is used as a cache of package->directory
|
||||
associations, but could be used by the users for a more refined
|
||||
control of package locations than `ess-r-package-library-paths'.")
|
||||
|
||||
(defun ess-r-xref-backend ()
|
||||
"An `xref-backend-functions' implementation for `R-mode'.
|
||||
R's xref backend searches for `ess-r-package-library-paths' when
|
||||
srcrefs point to temporary locations."
|
||||
'ess-r)
|
||||
|
||||
(cl-defmethod xref-backend-identifier-at-point ((_backend (eql ess-r)))
|
||||
(symbol-name (ess-symbol-at-point)))
|
||||
|
||||
(cl-defmethod xref-backend-definitions ((_backend (eql ess-r)) symbol)
|
||||
(let ((xref (ess-r-xref--xref symbol)))
|
||||
(when xref (list xref))))
|
||||
|
||||
(cl-defmethod xref-backend-apropos ((_backend (eql ess-r)))
|
||||
;; Not yet supported.
|
||||
nil)
|
||||
|
||||
(cl-defmethod xref-backend-identifier-completion-table ((_backend (eql ess-r)))
|
||||
(inferior-ess-r-force)
|
||||
(ess-get-words-from-vector ".ess_all_functions()\n"))
|
||||
|
||||
(defun ess-r-xref--srcref (symbol)
|
||||
(inferior-ess-r-force)
|
||||
;; Look for `symbol' inside the package namespace
|
||||
(let* ((pkg (ess-r-package-name))
|
||||
(pkg (if pkg
|
||||
(concat "\"" pkg "\"")
|
||||
"NULL")))
|
||||
(with-current-buffer (ess-command (format ".ess_srcref(\"%s\", %s)\n" symbol pkg))
|
||||
(goto-char (point-min))
|
||||
(when (re-search-forward "(" nil 'noerror)
|
||||
(goto-char (match-beginning 0))
|
||||
(read (current-buffer))))))
|
||||
|
||||
(defun ess-r-xref--pkg-srcfile (symbol r-src-file)
|
||||
"Look in the source directory of the R package containing symbol SYMBOL for R-SRC-FILE."
|
||||
(let* ((env-name (ess-string-command (format ".ess_fn_pkg(\"%s\")\n" symbol)))
|
||||
(pkg (if (string-equal env-name "")
|
||||
(error "Can't find package for symbol %s." symbol)
|
||||
env-name))
|
||||
(dir (or (assoc-default pkg ess-r-xref-pkg-sources)
|
||||
(cond ((stringp ess-r-package-library-paths)
|
||||
(expand-file-name pkg ess-r-package-library-paths))
|
||||
((listp ess-r-package-library-paths)
|
||||
(cl-loop for d in ess-r-package-library-paths
|
||||
for p = (expand-file-name pkg d)
|
||||
when (file-exists-p p) return p))
|
||||
(t (error "Invalid value of `ess-r-package-library-paths'")))))
|
||||
(file (when dir (expand-file-name r-src-file dir))))
|
||||
(when file
|
||||
(unless (file-readable-p file)
|
||||
(error "Can't read %s." file))
|
||||
;; Cache package's source directory.
|
||||
(unless (assoc pkg ess-r-xref-pkg-sources)
|
||||
(push `(,pkg . ,dir) ess-r-xref-pkg-sources))
|
||||
file)))
|
||||
|
||||
(defun ess-r-xref--xref (symbol)
|
||||
"Create an xref for the source file reference of R symbol SYMBOL."
|
||||
(let ((ref (ess-r-xref--srcref symbol)))
|
||||
(when ref
|
||||
(let ((file (nth 0 ref))
|
||||
(line (nth 1 ref))
|
||||
(col (nth 2 ref)))
|
||||
(or
|
||||
;; 1) Result of ESS evaluation
|
||||
(let* ((ess-ref (gethash file ess--srcrefs))
|
||||
(ess-buff (when ess-ref (ess--dbg-find-buffer (car ess-ref)))))
|
||||
(when ess-buff
|
||||
;; FIXME: this breaks when eval is on larger spans than function
|
||||
(xref-make symbol (xref-make-buffer-location ess-buff (nth 2 ess-ref)))))
|
||||
;; 2) Actual file location
|
||||
(when (file-readable-p file)
|
||||
(xref-make symbol (xref-make-file-location file line col)))
|
||||
;; 3) Temporary sources - truncate and locate in ess-r-package-library-paths
|
||||
(when (string-match "/\\(R/.*\\)$" file)
|
||||
(let ((pkg-file (ess-r-xref--pkg-srcfile symbol (match-string 1 file))))
|
||||
(when pkg-file
|
||||
(xref-make symbol (xref-make-file-location
|
||||
(expand-file-name pkg-file) line col))))))))))
|
||||
|
||||
(provide 'ess-r-xref)
|
||||
|
||||
;;; ess-r-xref.el ends here
|
||||
Reference in New Issue
Block a user