dotfiles/lisp/ensime-imenu.el

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;;; package -- Summary
;;; Commentary:
;;; Code:
(setq imenu-max-item-length 2000)
(setq imenu-space-replacement nil)
(setq scala-imenu:build-imenu-candidate 'ensime-imenu)
(setq scala-imenu:should-flatten-index t)
(defvar ensime-imenu-cache nil)
(add-to-list 'scala-imenu:cleanup-hooks (lambda () (setq ensime-imenu-cache nil)))
(defun ensime-imenu (member-name definition-type marker parents)
`(,(ensime-imenu-string member-name definition-type marker parents) .
,marker))
(defun ensime-imenu-string (member-name definition-type marker parents)
(let ((scala-imenu-string (car (scala-imenu:default-build-imenu-candidate
member-name definition-type marker parents))))
(if (equal definition-type "def")
(let ((ensime-type-string
(get-ensime-type member-name definition-type marker parents)))
(message ensime-type-string)
(format "%s%s" scala-imenu-string ensime-type-string))
scala-imenu-string)))
(defun get-ensime-type (member-name definition-type marker parents)
(let ((parent-name (caar parents))
(parent-marker (caddar parents)))
(build-method-type
(plist-get (type-info member-name parent-name parent-marker) :type))))
(defun build-method-type (type-info)
(format "%s: %s"
(build-argument-lists (plist-get type-info :param-sections))
(build-type-string (plist-get type-info :result-type))))
(defun build-argument-lists (param-list-infos)
(mapconcat 'build-argument-list param-list-infos ""))
(defun build-argument-list (param-list-info)
(format "(%s)" (mapconcat 'build-argument-string
(plist-get param-list-info :params) ", ")))
(defun build-argument-string (param-info)
(format "%s: %s" (car param-info)
(build-type-string (cadr param-info))))
(defun build-type-string (type-info)
(let ((name (plist-get type-info :name))
(type-args (plist-get type-info :type-args)))
(format "%s%s" name
(if type-args
(format "[%s]" (mapconcat
'build-type-string type-args ", ")) ""))))
(defun type-info (member-name type-name marker)
(get-plist-by-keys '(:name) member-name
(get-members type-name
(get-ensime-type-info-from-mark marker))))
(defun get-members (type-name type-info-plist)
(plist-get-deep (get-plist-by-keys
'(:type :name) type-name
(plist-get type-info-plist :interfaces)) '(:type :members)))
(defun plist-get-deep (plist keys)
(cl-reduce 'plist-get keys :initial-value plist))
(defun get-plist-by-keys (keys value plist)
(cl-find value plist :test 'equal
:key (lambda (member)
(plist-get-deep member keys))))
(defun get-ensime-type-info-from-mark (marker)
(let ((cached-value (assoc marker ensime-imenu-cache)))
(when (not cached-value)
(progn (setq cached-value
`(,marker . ,(ensime-rpc-inspect-type-at-range (get-eol-range marker))))
(setq ensime-imenu-cache (cons cached-value ensime-imenu-cache))))
(cdr cached-value)))
(defun get-eol-range (marker)
(interactive)
`(,(marker-position marker)
,(save-excursion (goto-char marker) (end-of-line) (point))))
(defun msg-type-info ()
(interactive)
(message "%s" (build-method-type
(plist-get (type-info "testFunction" "DFA" (point-marker)) :type))))