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Refinement in Emacs ghc-mode

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This commit is contained in:
Alejandro Serrano 2014-07-20 10:45:01 +02:00
parent ae49eab547
commit efe440438b
2 changed files with 40 additions and 13 deletions
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47
elisp/ghc-rewrite.el
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@ -11,6 +11,22 @@
(require 'ghc-func)
(require 'ghc-process)
;; Common code for case splitting and refinement
(defun ghc-perform-rewriting (info)
(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)) )
)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;
;;; Case splitting
@ -23,17 +39,7 @@
(let ((info (ghc-obtain-case-split)))
(if (null info)
(message "Cannot split in cases")
(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)) ) )))
(ghc-perform-rewriting info)) ))
(defun ghc-obtain-case-split ()
(let* ((ln (int-to-string (line-number-at-pos)))
@ -42,6 +48,25 @@
(cmd (format "split %s %s %s\n" file ln cn)))
(ghc-sync-process cmd)))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;
;;; Refinement
;;;
(defun ghc-refine ()
(interactive)
(let ((info (ghc-obtain-refine (read-string "Refine with: "))))
(if (null info)
(message "Cannot refine")
(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)))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;
;;; Initial code from signature

6
elisp/ghc.el
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@ -73,8 +73,9 @@
(defvar ghc-hoogle-key (format "\C-c%c" (ghc-find-C-h)))
(defvar ghc-shallower-key "\C-c<")
(defvar ghc-deeper-key "\C-c>")
(defvar ghc-case-split-key "\C-c\C-p")
(defvar ghc-initial-sig-key "\C-c\C-s")
(defvar ghc-case-split-key "\C-c\C-s")
(defvar ghc-initial-sig-key "\C-c\C-g")
(defvar ghc-refine-key "\C-c\C-r")
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;
@ -109,6 +110,7 @@
(define-key haskell-mode-map ghc-deeper-key 'ghc-make-indent-deeper)
(define-key haskell-mode-map ghc-case-split-key 'ghc-case-split)
(define-key haskell-mode-map ghc-initial-sig-key 'ghc-initial-code-from-signature)
(define-key haskell-mode-map ghc-refine-key 'ghc-refine)
(ghc-comp-init)
(setq ghc-initialized t))
(ghc-import-module)