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Mateus Pinto Rodrigues
2018-10-04 13:56:56 -03:00
parent 5d03e5e124
commit d272c43bcd
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;;; 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