207 lines
6.5 KiB
EmacsLisp
207 lines
6.5 KiB
EmacsLisp
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
;;;
|
|
;;; ghc-rewrite.el
|
|
;;;
|
|
|
|
;; Author: Alejandro Serrano <trupill@gmail.com>
|
|
;; Created: Jun 17, 2014
|
|
|
|
;;; Code:
|
|
|
|
(require 'ghc-func)
|
|
(require 'ghc-process)
|
|
(require 'button)
|
|
(require 'dropdown-list)
|
|
|
|
(defvar ghc-auto-info nil)
|
|
(defvar ghc-auto-buffer nil)
|
|
|
|
;; Common code for case splitting and refinement
|
|
|
|
(defun ghc-perform-rewriting (info)
|
|
"Replace code with new string obtained from ghc-mod"
|
|
(let* ((current-line (line-number-at-pos))
|
|
(begin-line (ghc-sinfo-get-beg-line info))
|
|
(begin-line-diff (+ 1 (- begin-line current-line)))
|
|
(begin-line-pos (line-beginning-position begin-line-diff))
|
|
(begin-pos (- (+ begin-line-pos (ghc-sinfo-get-beg-column info)) 1))
|
|
(end-line (ghc-sinfo-get-end-line info))
|
|
(end-line-diff (+ 1 (- end-line current-line)))
|
|
(end-line-pos (line-beginning-position end-line-diff))
|
|
(end-pos (- (+ end-line-pos (ghc-sinfo-get-end-column info)) 1)) )
|
|
(delete-region begin-pos end-pos)
|
|
(insert (ghc-sinfo-get-info info)) )
|
|
)
|
|
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
;;;
|
|
;;; Combined rewriting
|
|
;;;
|
|
|
|
(defun ghc-try-rewrite ()
|
|
"Try to apply initial code generation and case splitting"
|
|
(interactive)
|
|
(when (null (ghc-try-initial-code-from-signature))
|
|
(ghc-try-case-split)))
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
;;;
|
|
;;; Case splitting
|
|
;;;
|
|
|
|
(ghc-defstruct sinfo beg-line beg-column end-line end-column info)
|
|
|
|
(defun ghc-case-split ()
|
|
"Split the variable at point into its possible constructors"
|
|
(interactive)
|
|
(when (null (ghc-try-case-split))
|
|
(message "Cannot split into cases")))
|
|
|
|
(defun ghc-try-case-split ()
|
|
(let ((info (ghc-obtain-case-split)))
|
|
(if (null info)
|
|
'()
|
|
(ghc-perform-rewriting info)) ))
|
|
|
|
(defun ghc-obtain-case-split ()
|
|
(let* ((ln (int-to-string (line-number-at-pos)))
|
|
(cn (int-to-string (1+ (current-column))))
|
|
(file (buffer-file-name))
|
|
(cmd (format "split %s %s %s\n" file ln cn)))
|
|
(ghc-sync-process cmd)))
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
;;;
|
|
;;; Refinement
|
|
;;;
|
|
|
|
(defun ghc-refine ()
|
|
"Refine a hole using a user-specified function"
|
|
(interactive)
|
|
(when (null (ghc-try-refine))
|
|
(message "Cannot refine")))
|
|
|
|
(defun ghc-try-refine ()
|
|
(let ((info (ghc-obtain-refine (read-string "Refine with: "))))
|
|
(if (null info)
|
|
'()
|
|
(ghc-perform-rewriting info)) ))
|
|
|
|
(defun ghc-obtain-refine (expr)
|
|
(let* ((ln (int-to-string (line-number-at-pos)))
|
|
(cn (int-to-string (1+ (current-column))))
|
|
(file (buffer-file-name))
|
|
(cmd (format "refine %s %s %s %s\n" file ln cn expr)))
|
|
(ghc-sync-process cmd)))
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
;;;
|
|
;;; Auto
|
|
;;;
|
|
|
|
(defun ghc-perform-rewriting-auto (info msg)
|
|
"Replace code with new string obtained from ghc-mod from auto mode"
|
|
(let* ((current-line (line-number-at-pos))
|
|
(begin-line (ghc-sinfo-get-beg-line info))
|
|
(begin-line-diff (+ 1 (- begin-line current-line)))
|
|
(begin-line-pos (line-beginning-position begin-line-diff))
|
|
(begin-pos (- (+ begin-line-pos (ghc-sinfo-get-beg-column info)) 1))
|
|
(end-line (ghc-sinfo-get-end-line info))
|
|
(end-line-diff (+ 1 (- end-line current-line)))
|
|
(end-line-pos (line-beginning-position end-line-diff))
|
|
(end-pos (- (+ end-line-pos (ghc-sinfo-get-end-column info)) 1)) )
|
|
(delete-region begin-pos end-pos)
|
|
(insert msg)))
|
|
|
|
;; (defun auto-button (button)
|
|
;; (let ((text (buffer-substring (button-start button) (button-end button))))
|
|
;; (with-current-buffer ghc-auto-buffer
|
|
;; (ghc-perform-rewriting-auto ghc-auto-info text))))
|
|
|
|
;; (define-button-type 'auto-button
|
|
;; 'follow-link t
|
|
;; 'help-echo "mouse-2, RET: Insert this completion"
|
|
;; 'action #'auto-button)
|
|
|
|
;; (defun ghc-show-auto-messages (info)
|
|
;; (let ((buf (current-buffer)))
|
|
;; (setq ghc-auto-info info)
|
|
;; (setq ghc-auto-buffer buf)
|
|
;; (ghc-display nil
|
|
;; (lambda ()
|
|
;; (insert "Possible completions:\n")
|
|
;; (mapc
|
|
;; (lambda (x)
|
|
;; (let* ((ins1 (insert "- "))
|
|
;; (pos-begin (point))
|
|
;; (ins (insert x))
|
|
;; (pos-end (point))
|
|
;; (ins3 (insert "\n")))
|
|
;; (make-button pos-begin pos-end :type 'auto-button)))
|
|
;; (ghc-sinfo-get-info info))))))
|
|
|
|
(defun ghc-show-auto-messages (info)
|
|
(let* ((completions (ghc-sinfo-get-info info))
|
|
(selected (dropdown-list completions)))
|
|
(when selected
|
|
(ghc-perform-rewriting-auto info (nth selected completions)))))
|
|
|
|
(defun ghc-auto ()
|
|
"Try to automatically fill the contents of a hole"
|
|
(interactive)
|
|
(let ((info (ghc-obtain-auto)))
|
|
(if (null info)
|
|
(message "No automatic completions found")
|
|
(if (= (length (ghc-sinfo-get-info info)) 1)
|
|
(ghc-perform-rewriting-auto info (car (ghc-sinfo-get-info info)))
|
|
(ghc-show-auto-messages info)))))
|
|
|
|
(defun ghc-obtain-auto ()
|
|
(let* ((ln (int-to-string (line-number-at-pos)))
|
|
(cn (int-to-string (1+ (current-column))))
|
|
(file (buffer-file-name))
|
|
(cmd (format "auto %s %s %s\n" file ln cn)))
|
|
(ghc-sync-process cmd)))
|
|
|
|
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
|
;;;
|
|
;;; Initial code from signature
|
|
;;;
|
|
|
|
(ghc-defstruct icsinfo sort pos fns)
|
|
|
|
(defun ghc-initial-code-from-signature ()
|
|
"Refine a hole using a user-specified function"
|
|
(interactive)
|
|
(when (null (ghc-try-initial-code-from-signature))
|
|
(message "Cannot obtain initial code")))
|
|
|
|
(defun ghc-try-initial-code-from-signature ()
|
|
"Include initial code from a function signature or instance declaration"
|
|
(interactive)
|
|
(let ((info (ghc-obtain-initial-code-from-signature)))
|
|
(if (null info)
|
|
'()
|
|
(let* ((ln-current (line-number-at-pos))
|
|
(sort (ghc-icsinfo-get-sort info))
|
|
(pos (ghc-icsinfo-get-pos info))
|
|
(ln-end (ghc-sinfo-get-end-line pos))
|
|
(ln-diff (+ 1 (- ln-end ln-current)))
|
|
(fns-to-insert (ghc-icsinfo-get-fns info)))
|
|
(goto-char (line-end-position ln-diff))
|
|
(dolist (fn-to-insert fns-to-insert)
|
|
(if (equal sort "function")
|
|
(newline)
|
|
(newline-and-indent))
|
|
(insert fn-to-insert))))))
|
|
|
|
(defun ghc-obtain-initial-code-from-signature ()
|
|
(let* ((ln (int-to-string (line-number-at-pos)))
|
|
(cn (int-to-string (1+ (current-column))))
|
|
(file (buffer-file-name))
|
|
(cmd (format "sig %s %s %s\n" file ln cn)))
|
|
(ghc-sync-process cmd)))
|
|
|
|
(provide 'ghc-rewrite)
|