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;;; ede/emacs.el --- Special project for Emacs -*- lexical-binding: t -*-
;; Copyright (C) 2008-2021 Free Software Foundation, Inc.
;; Author: Eric M. Ludlam <zappo@gnu.org>
;; This file is part of GNU Emacs.
;; GNU Emacs 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.
;; GNU Emacs 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 GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;;
;; Provide a special project type just for Emacs, cause Emacs is special.
;;
;; Identifies an Emacs project automatically.
;; Speedy ede-expand-filename based on extension.
;; Pre-populates the preprocessor map from lisp.h
;;
;; ToDo :
;; * Add "build" options.
;; * Add texinfo lookup options.
;; * Add website
(require 'ede)
(require 'semantic/db)
;;; Code:
;; @TODO - get rid of this. Stuck in loaddefs right now.
(defun ede-emacs-project-root (&optional _dir)
"Get the root directory for DIR."
nil)
(defun ede-emacs-version (dir)
"Find the Emacs version for the Emacs src in DIR.
Return a tuple of ( EMACSNAME . VERSION )."
(let ((buff (get-buffer-create " *emacs-query*"))
(configure_ac "configure.ac")
(emacs "Emacs")
(ver ""))
(with-current-buffer buff
(erase-buffer)
(setq default-directory (file-name-as-directory dir))
(cond
;; Vaguely recent version of GNU Emacs?
((or (file-exists-p configure_ac)
(file-exists-p (setq configure_ac "configure.in")))
(insert-file-contents configure_ac)
(goto-char (point-min))
(re-search-forward "AC_INIT(\\(?:GNU \\)?[eE]macs,\\s-*\\([0-9.]+\\)\\s-*[,)]")
(setq ver (match-string 1))
)
)
;; Return a tuple
(cons emacs ver))))
(defclass ede-emacs-project (ede-project)
(
)
"Project Type for the Emacs source code."
:method-invocation-order :depth-first)
(defun ede-emacs-load (dir &optional _rootproj)
"Return an Emacs Project object if there is a match.
Return nil if there isn't one.
Argument DIR is the directory it is created for.
ROOTPROJ is nil, since there is only one project."
;; Doesn't already exist, so let's make one.
(let* ((vertuple (ede-emacs-version dir)))
(ede-emacs-project
(car vertuple)
:name (car vertuple)
:version (cdr vertuple)
:directory (file-name-as-directory dir)
:file (expand-file-name "src/emacs.c"
dir))))
;;;###autoload
(ede-add-project-autoload
(make-instance 'ede-project-autoload
:name "EMACS ROOT"
:file 'ede/emacs
:proj-file "src/emacs.c"
:load-type 'ede-emacs-load
:class-sym 'ede-emacs-project
:new-p nil
:safe-p t)
'unique)
(defclass ede-emacs-target-c (ede-target)
()
"EDE Emacs Project target for C code.
All directories need at least one target.")
(defclass ede-emacs-target-el (ede-target)
()
"EDE Emacs Project target for Emacs Lisp code.
All directories need at least one target.")
(defclass ede-emacs-target-misc (ede-target)
()
"EDE Emacs Project target for Misc files.
All directories need at least one target.")
(cl-defmethod initialize-instance ((this ede-emacs-project)
&rest _fields)
"Make sure the targets slot is bound."
(cl-call-next-method)
(unless (slot-boundp this 'targets)
(oset this :targets nil)))
;;; File Stuff
;;
(cl-defmethod ede-project-root-directory ((this ede-emacs-project)
&optional _file)
"Return the root for THIS Emacs project with file."
(ede-up-directory (file-name-directory (oref this file))))
(cl-defmethod ede-project-root ((this ede-emacs-project))
"Return my root."
this)
(cl-defmethod ede-find-subproject-for-directory ((proj ede-emacs-project)
_dir)
"Return PROJ, for handling all subdirs below DIR."
proj)
;;; TARGET MANAGEMENT
;;
(defun ede-emacs-find-matching-target (class dir targets)
"Find a target that is a CLASS and is in DIR in the list of TARGETS."
(let ((match nil))
(dolist (T targets)
(when (and (object-of-class-p T class)
(string= (oref T path) dir))
(setq match T)
))
match))
(cl-defmethod ede-find-target ((proj ede-emacs-project) buffer)
"Find an EDE target in PROJ for BUFFER.
If one doesn't exist, create a new one for this directory."
(let* ((ext (file-name-extension (buffer-file-name buffer)))
(cls (cond ((not ext)
'ede-emacs-target-misc)
((string-match "c\\|h" ext)
'ede-emacs-target-c)
((string-match "elc?" ext)
'ede-emacs-target-el)
(t 'ede-emacs-target-misc)))
(targets (oref proj targets))
(dir default-directory)
(ans (ede-emacs-find-matching-target cls dir targets))
)
(when (not ans)
(setq ans (make-instance
cls
:name (file-name-nondirectory
(directory-file-name dir))
:path dir
:source nil))
(object-add-to-list proj :targets ans)
)
ans))
;;; UTILITIES SUPPORT.
;;
(cl-defmethod ede-preprocessor-map ((this ede-emacs-target-c))
"Get the pre-processor map for Emacs C code.
All files need the macros from lisp.h!"
(require 'semantic/db)
(let* ((proj (ede-target-parent this))
(root (ede-project-root proj))
(table (semanticdb-file-table-object
(ede-expand-filename root "lisp.h")))
(config (semanticdb-file-table-object
(ede-expand-filename root "config.h")))
filemap
)
(when table
(when (semanticdb-needs-refresh-p table)
(semanticdb-refresh-table table))
(setq filemap (append filemap (oref table lexical-table)))
)
(when config
(when (semanticdb-needs-refresh-p config)
(semanticdb-refresh-table config))
(setq filemap (append filemap (oref config lexical-table)))
)
filemap
))
(defun ede-emacs-find-in-directories (name base dirs)
"Find NAME is BASE directory sublist of DIRS."
(let ((ans nil))
(while (and dirs (not ans))
(let* ((D (car dirs))
(ed (expand-file-name D base))
(ef (expand-file-name name ed)))
(when (file-exists-p ed)
(if (file-exists-p ef)
(setq ans ef)
;; Not in this dir? How about subdirs?
(let ((dirfile (directory-files ed t))
(moredirs nil))
;; Get all the subdirs.
(dolist (DF dirfile)
(when (and (file-directory-p DF)
(not (string-match "\\.$" DF)))
(push DF moredirs)))
;; Try again.
(setq ans (ede-emacs-find-in-directories name ed moredirs)))))
(setq dirs (cdr dirs))))
ans))
(cl-defmethod ede-expand-filename-impl ((proj ede-emacs-project) name)
"Within this project PROJ, find the file NAME.
Knows about how the Emacs source tree is organized."
(let* ((ext (file-name-extension name))
(root (ede-project-root proj))
(dir (ede-project-root-directory root))
(dirs (cond
((not ext) nil)
((string-match "h\\|c" ext)
'("src" "lib-src" "lwlib"))
((string-match "elc?" ext)
'("lisp"))
((string-match "texi" ext)
'("doc"))
(t nil)))
)
(if (not dirs) (cl-call-next-method)
(ede-emacs-find-in-directories name dir dirs))
))
;;; Command Support
;;
(cl-defmethod project-rescan ((this ede-emacs-project))
"Rescan this Emacs project from the sources."
(let ((ver (ede-emacs-version (ede-project-root-directory this))))
(oset this name (car ver))
(oset this version (cdr ver))
))
(provide 'ede/emacs)
;; Local variables:
;; generated-autoload-file: "loaddefs.el"
;; generated-autoload-load-name: "ede/emacs"
;; End:
;;; ede/emacs.el ends here
|
