forked from emacs-helm/helm
/
helm-semantic.el
231 lines (199 loc) · 8.86 KB
/
helm-semantic.el
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
;;; helm-semantic.el --- Helm interface for Semantic -*- lexical-binding: t -*-
;; Copyright (C) 2012 ~ 2017 Daniel Hackney <dan@haxney.org>
;; 2012 ~ 2018 Thierry Volpiatto<thierry.volpiatto@gmail.com>
;; Author: Daniel Hackney <dan@haxney.org>
;; 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 <http://www.gnu.org/licenses/>.
;;; Commentary:
;; Uses `candidates-in-buffer' for speed.
;;; Code:
(require 'cl-lib)
(require 'semantic)
(require 'helm-help)
(require 'helm-imenu)
(declare-function pulse-momentary-highlight-one-line "pulse.el" (point &optional face))
(defgroup helm-semantic nil
"Semantic tags related libraries and applications for helm."
:group 'helm)
(defcustom helm-semantic-lynx-style-map t
"Use Arrow keys to jump to occurences."
:group 'helm-semantic
:type 'boolean)
(defcustom helm-semantic-display-style
'((python-mode . semantic-format-tag-summarize)
(c-mode . semantic-format-tag-concise-prototype-c-mode)
(emacs-lisp-mode . semantic-format-tag-abbreviate-emacs-lisp-mode))
"Function to present a semantic tag according to `major-mode'.
It is an alist where the `car' of each element is a `major-mode' and
the `cdr' a `semantic-format-tag-*' function.
If no function is found for current `major-mode', fall back to
`semantic-format-tag-summarize' default function.
You can have more or less informations depending of the `semantic-format-tag-*'
function you choose.
All the supported functions are prefixed with \"semantic-format-tag-\",
you have completion on these functions with `C-M i' in the customize interface."
:group 'helm-semantic
:type '(alist :key-type symbol :value-type symbol))
;;; keymap
(defvar helm-semantic-map
(let ((map (make-sparse-keymap)))
(set-keymap-parent map helm-map)
(when helm-semantic-lynx-style-map
(define-key map (kbd "<left>") 'helm-maybe-exit-minibuffer)
(define-key map (kbd "<right>") 'helm-execute-persistent-action))
(delq nil map)))
;; Internals vars
(defvar helm-semantic--tags-cache nil)
(defun helm-semantic--fetch-candidates (tags depth &optional class)
"Write the contents of TAGS to the current buffer."
(let ((class class) cur-type
(stylefn (or (with-helm-current-buffer
(assoc-default major-mode helm-semantic-display-style))
#'semantic-format-tag-summarize)))
(cl-dolist (tag tags)
(when (listp tag)
(cl-case (setq cur-type (semantic-tag-class tag))
((function variable type)
(let ((spaces (make-string (* depth 2) ?\s))
(type-p (eq cur-type 'type)))
(unless (and (> depth 0) (not type-p))
(setq class nil))
(insert
(if (and class (not type-p))
(format "%s%s(%s) "
spaces (if (< depth 2) "" "├►") class)
spaces)
;; Save the tag for later
(propertize (funcall stylefn tag nil t)
'semantic-tag tag)
"\n")
(and type-p (setq class (car tag)))
;; Recurse to children
(unless (eq cur-type 'function)
(helm-semantic--fetch-candidates
(semantic-tag-components tag) (1+ depth) class))))
;; Don't do anything with packages or includes for now
((package include)
(insert
(propertize (funcall stylefn tag nil t)
'semantic-tag tag)
"\n")
)
;; Catch-all
(t))))))
(defun helm-semantic-default-action (_candidate &optional persistent)
;; By default, helm doesn't pass on the text properties of the selection.
;; Fix this.
(helm-log-run-hook 'helm-goto-line-before-hook)
(with-current-buffer helm-buffer
(when (looking-at " ")
(goto-char (next-single-property-change
(point-at-bol) 'semantic-tag nil (point-at-eol))))
(let ((tag (get-text-property (point) 'semantic-tag)))
(semantic-go-to-tag tag)
(unless persistent
(pulse-momentary-highlight-one-line (point))))))
(defun helm-semantic--maybe-set-needs-update ()
(with-helm-current-buffer
(when (semantic-parse-tree-needs-update-p)
(semantic-parse-tree-set-needs-update))))
(defvar helm-source-semantic nil)
(defclass helm-semantic-source (helm-source-in-buffer)
((init :initform (lambda ()
(helm-semantic--maybe-set-needs-update)
(setq helm-semantic--tags-cache (semantic-fetch-tags))
(with-current-buffer (helm-candidate-buffer 'global)
(let ((major-mode (with-helm-current-buffer major-mode)))
(helm-semantic--fetch-candidates helm-semantic--tags-cache 0)))))
(get-line :initform 'buffer-substring)
(persistent-help :initform "Show this entry")
(keymap :initform 'helm-semantic-map)
(help-message :initform 'helm-semantic-help-message)
(persistent-action :initform (lambda (elm)
(helm-semantic-default-action elm t)
(helm-highlight-current-line)))
(action :initform 'helm-semantic-default-action)))
(defcustom helm-semantic-fuzzy-match nil
"Enable fuzzy matching in `helm-source-semantic'."
:group 'helm-semantic
:type 'boolean
:set (lambda (var val)
(set var val)
(setq helm-source-semantic
(helm-make-source "Semantic Tags" 'helm-semantic-source
:fuzzy-match helm-semantic-fuzzy-match))))
;;;###autoload
(defun helm-semantic (arg)
"Preconfigured `helm' for `semantic'.
If ARG is supplied, pre-select symbol at point instead of current"
(interactive "P")
(let ((tag (helm-aif (car (semantic-current-tag-parent))
(let ((curtag (car (semantic-current-tag))))
(if (string= it curtag)
(format "\\_<%s\\_>" curtag)
(cons (format "\\_<%s\\_>" it)
(format "\\_<%s\\_>" curtag))))
(format "\\_<%s\\_>" (car (semantic-current-tag))))))
(unless helm-source-semantic
(setq helm-source-semantic
(helm-make-source "Semantic Tags" 'helm-semantic-source
:fuzzy-match helm-semantic-fuzzy-match)))
(helm :sources 'helm-source-semantic
:candidate-number-limit 9999
:preselect (if arg
(thing-at-point 'symbol)
tag)
:buffer "*helm semantic*")))
;;;###autoload
(defun helm-semantic-or-imenu (arg)
"Preconfigured helm for `semantic' or `imenu'.
If ARG is supplied, pre-select symbol at point instead of current
semantic tag in scope.
If `semantic-mode' is active in the current buffer, then use
semantic for generating tags, otherwise fall back to `imenu'.
Fill in the symbol at point by default."
(interactive "P")
(unless helm-source-semantic
(setq helm-source-semantic
(helm-make-source "Semantic Tags" 'helm-semantic-source
:fuzzy-match helm-semantic-fuzzy-match)))
(unless helm-source-imenu
(setq helm-source-imenu
(helm-make-source "Imenu" 'helm-imenu-source
:fuzzy-match helm-imenu-fuzzy-match)))
(let* ((source (if (semantic-active-p)
'helm-source-semantic
'helm-source-imenu))
(imenu-p (eq source 'helm-source-imenu))
(imenu-auto-rescan imenu-p)
(str (thing-at-point 'symbol))
(helm-execute-action-at-once-if-one
(and imenu-p
helm-imenu-execute-action-at-once-if-one))
(tag (helm-aif (car (semantic-current-tag-parent))
(let ((curtag (car (semantic-current-tag))))
(if (string= it curtag)
(format "\\_<%s\\_>" curtag)
(cons (format "\\_<%s\\_>" it)
(format "\\_<%s\\_>" curtag))))
(format "\\_<%s\\_>" (car (semantic-current-tag))))))
(helm :sources source
:candidate-number-limit 9999
:default (and imenu-p (list (concat "\\_<" (and str (regexp-quote str)) "\\_>") str))
:preselect (if (or arg imenu-p) str tag)
:buffer "*helm semantic/imenu*")))
(provide 'helm-semantic)
;; Local Variables:
;; byte-compile-warnings: (not obsolete)
;; coding: utf-8
;; indent-tabs-mode: nil
;; End:
;;; helm-semantic.el ends here