emacs-orgmode@gnu.org archives
 help / color / mirror / code / Atom feed
blob 8d5ff2fc01f1736f4bb3ba5a6b3f8c1614c72da2 14410 bytes (raw)
name: lisp/ob-C.el 	 # note: path name is non-authoritative(*)

  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
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
 
;;; ob-C.el --- org-babel functions for C and similar languages

;; Copyright (C) 2010-2014 Free Software Foundation, Inc.

;; Author: Eric Schulte
;;      Thierry Banel
;; Keywords: literate programming, reproducible research
;; Homepage: http://orgmode.org

;; This file is part of GNU Emacs.

;; GNU Emacs 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.

;; GNU Emacs 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 GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.

;;; Commentary:

;; Org-Babel support for evaluating C, C++, D code.
;;
;; very limited implementation:
;; - currently only support :results output
;; - not much in the way of error feedback

;;; Code:
(require 'ob)
(require 'cc-mode)

(declare-function org-entry-get "org"
		  (pom property &optional inherit literal-nil))
(declare-function org-remove-indentation "org" (code &optional n))

(defvar org-babel-tangle-lang-exts)
(add-to-list 'org-babel-tangle-lang-exts '("C++" . "cpp"))
(add-to-list 'org-babel-tangle-lang-exts '("D" . "d"))

(defvar org-babel-default-header-args:C '())

(defcustom org-babel-C-compiler "gcc"
  "Command used to compile a C source code file into an executable.
May be either a command in the path, like gcc
or an absolute path name, like /usr/local/bin/gcc
parameter may be used, like gcc -v"
  :group 'org-babel
  :version "24.3"
  :type 'string)

(defcustom org-babel-C++-compiler "g++"
  "Command used to compile a C++ source code file into an executable.
May be either a command in the path, like g++
or an absolute path name, like /usr/local/bin/g++
parameter may be used, like g++ -v"
  :group 'org-babel
  :version "24.3"
  :type 'string)

(defcustom org-babel-D-compiler "rdmd"
  "Command used to compile and execute a D source code file.
May be either a command in the path, like rdmd
or an absolute path name, like /usr/local/bin/rdmd
parameter may be used, like rdmd --chatty"
  :group 'org-babel
  :version "24.3"
  :type 'string)

(defvar org-babel-c-variant nil
  "Internal variable used to hold which type of C (e.g. C or C++ or D)
is currently being evaluated.")

(defun org-babel-execute:cpp (body params)
  "Execute BODY according to PARAMS.
This function calls `org-babel-execute:C++'."
  (org-babel-execute:C++ body params))

(defun org-babel-expand-body:cpp (body params)
  "Expand a block of C++ code with org-babel according to it's
header arguments."
  (org-babel-expand-body:C++ body params))

(defun org-babel-execute:C++ (body params)
  "Execute a block of C++ code with org-babel.
This function is called by `org-babel-execute-src-block'."
  (let ((org-babel-c-variant 'cpp)) (org-babel-C-execute body params)))

(defun org-babel-expand-body:C++ (body params)
  "Expand a block of C++ code with org-babel according to it's
header arguments."
  (let ((org-babel-c-variant 'cpp)) (org-babel-C-expand-C++ body params)))

(defun org-babel-execute:D (body params)
  "Execute a block of D code with org-babel.
This function is called by `org-babel-execute-src-block'."
  (let ((org-babel-c-variant 'd)) (org-babel-C-execute body params)))

(defun org-babel-expand-body:D (body params)
  "Expand a block of D code with org-babel according to it's
header arguments."
  (let ((org-babel-c-variant 'd)) (org-babel-C-expand-D body params)))

(defun org-babel-execute:C (body params)
  "Execute a block of C code with org-babel.
This function is called by `org-babel-execute-src-block'."
  (let ((org-babel-c-variant 'c)) (org-babel-C-execute body params)))

(defun org-babel-expand-body:C (body params)
  "Expand a block of C code with org-babel according to it's
header arguments."
  (let ((org-babel-c-variant 'c)) (org-babel-C-expand-C body params)))

(defun org-babel-C-execute (body params)
  "This function should only be called by `org-babel-execute:C'
or `org-babel-execute:C++' or `org-babel-execute:D'."
  (let* ((tmp-src-file (org-babel-temp-file
			"C-src-"
			(case org-babel-c-variant
			 (c   ".c"  )
			 (cpp ".cpp")
			 (d   ".d"  ))))
	 (tmp-bin-file (org-babel-temp-file "C-bin-" org-babel-exeext)) ;; not used for D
	 (cmdline (cdr (assoc :cmdline params)))
	 (cmdline (if cmdline (concat " " cmdline) ""))
	 (flags (cdr (assoc :flags params)))
	 (flags (mapconcat 'identity
			   (if (listp flags) flags (list flags)) " "))
	 (full-body
	  (case org-babel-c-variant
	    (c   (org-babel-C-expand-C   body params))
	    (cpp (org-babel-C-expand-C++ body params))
	    (d   (org-babel-C-expand-D   body params)))))
    (with-temp-file tmp-src-file (insert full-body))
    (case org-babel-c-variant
      ((c cpp)
       (org-babel-eval
	(format "%s -o %s %s %s"
		(case org-babel-c-variant
		 (c   org-babel-C-compiler)
		 (cpp org-babel-C++-compiler))
		(org-babel-process-file-name tmp-bin-file)
		flags
		(org-babel-process-file-name tmp-src-file)) ""))
      (d nil)) ;; no separate compilation for D
    (let ((results
	   (org-babel-eval
	    (case org-babel-c-variant
	      ((c cpp)
	       (concat tmp-bin-file cmdline))
	      (d
	       (format "%s %s %s %s"
		       org-babel-D-compiler
		       flags
		       (org-babel-process-file-name tmp-src-file)
		       cmdline)))
	    "")))
      (when results
	(setq results (org-babel-trim (org-remove-indentation results)))
	(org-babel-reassemble-table
	 (org-babel-result-cond (cdr (assoc :result-params params))
	   (org-babel-read results t)
	   (let ((tmp-file (org-babel-temp-file "c-")))
	     (with-temp-file tmp-file (insert results))
	     (org-babel-import-elisp-from-file tmp-file)))
	 (org-babel-pick-name
	  (cdr (assoc :colname-names params)) (cdr (assoc :colnames params)))
	 (org-babel-pick-name
	  (cdr (assoc :rowname-names params)) (cdr (assoc :rownames params)))))
      )))

(defun org-babel-C-expand-C++ (body params)
  "Expand a block of C or C++ code with org-babel according to
it's header arguments."
  (org-babel-C-expand-C body params))

(defun org-babel-C-expand-C (body params)
  "Expand a block of C or C++ code with org-babel according to
it's header arguments."
  (let ((vars (mapcar #'cdr (org-babel-get-header params :var)))
	(colnames (cdar (org-babel-get-header params :colname-names)))
	(main-p (not (string= (cdr (assoc :main params)) "no")))
	(includes (org-babel-read
		   (or (cdr (assoc :includes params))
		       (org-entry-get nil "includes" t))
		   nil))
	(defines (org-babel-read
		  (or (cdr (assoc :defines params))
		      (org-entry-get nil "defines" t))
		  nil)))
    (when (stringp includes)
      (setq includes (split-string includes)))
    (when (stringp defines)
      (let ((y nil)
	    (result (list t)))
	(dolist (x (split-string defines))
	  (if (null y)
	      (setq y x)
	    (nconc result (list (concat y " " x)))
	    (setq y nil)))
	(setq defines (cdr result))))
    (mapconcat 'identity
	       (list
		;; includes
		(mapconcat
		 (lambda (inc) (format "#include %s" inc))
		 includes "\n")
		;; defines
		(mapconcat
		 (lambda (inc) (format "#define %s" inc))
		 (if (listp defines) defines (list defines)) "\n")
		;; variables
		(mapconcat 'org-babel-C-var-to-C vars "\n")
		;; table sizes
		(mapconcat 'org-babel-C-table-sizes-to-C vars "\n")
		;; tables headers utility
		(when colnames
		  (org-babel-C-utility-header-to-C))
		;; tables headers
		(mapconcat 'org-babel-C-header-to-C colnames "\n")
		;; body
		(if main-p
		    (org-babel-C-ensure-main-wrap body)
		  body) "\n") "\n")))

(defun org-babel-C-expand-D (body params)
  "Expand a block of D code with org-babel according to
it's header arguments."
  (let ((vars (mapcar #'cdr (org-babel-get-header params :var)))
	(colnames (cdar (org-babel-get-header params :colname-names)))
	(main-p (not (string= (cdr (assoc :main params)) "no")))
	(imports (or (cdr (assoc :imports params))
		     (org-babel-read (org-entry-get nil "imports" t)))))
    (when (stringp imports)
      (setq imports (split-string imports)))
    (setq imports (append imports '("std.stdio" "std.conv")))
    (mapconcat 'identity
	       (list
		"module mmm;"
		;; imports
		(mapconcat
		 (lambda (inc) (format "import %s;" inc))
		 imports "\n")
		;; variables
		(mapconcat 'org-babel-C-var-to-C vars "\n")
		;; table sizes
		(mapconcat 'org-babel-C-table-sizes-to-C vars "\n")
		;; tables headers utility
		(when colnames
		  (org-babel-C-utility-header-to-C))
		;; tables headers
		(mapconcat 'org-babel-C-header-to-C colnames "\n")
		;; body
		(if main-p
		    (org-babel-C-ensure-main-wrap body)
		  body) "\n") "\n")))

(defun org-babel-C-ensure-main-wrap (body)
  "Wrap BODY in a \"main\" function call if none exists."
  (if (string-match "^[ \t]*[intvod]+[ \t\n\r]*main[ \t]*(.*)" body)
      body
    (format "int main() {\n%s\nreturn 0;\n}\n" body)))

(defun org-babel-prep-session:C (session params)
  "This function does nothing as C is a compiled language with no
support for sessions"
  (error "C is a compiled languages -- no support for sessions"))

(defun org-babel-load-session:C (session body params)
  "This function does nothing as C is a compiled language with no
support for sessions"
  (error "C is a compiled languages -- no support for sessions"))

;; helper functions

(defun org-babel-C-format-val (type val)
  "Handle the FORMAT part of TYPE with the data from VAL."
  (let ((format-data (cadr type)))
    (if (stringp format-data)
	(cons "" (format format-data val))
      (funcall format-data val))))

(defun org-babel-C-val-to-C-type (val)
  "Determine the type of VAL.
Return a list (TYPE-NAME FORMAT).  TYPE-NAME should be the name of the type.
FORMAT can be either a format string or a function which is called with VAL."
  (let* ((basetype (org-babel-C-val-to-base-type val))
	 (type
	  (case basetype
	    (integerp '("int" "%d"))
	    (floatp '("double" "%f"))
	    (stringp
	     (list
	      (if (equal org-babel-c-variant 'd) "string" "const char*")
	      "\"%s\""))
	    (t (error "unknown type %S" basetype)))))
    (cond
     ((integerp val) type) ;; an integer declared in the #+begin_src line
     ((floatp val) type) ;; a numeric declared in the #+begin_src line
     ((and (listp val) (listp (car val))) ;; a table
      `(,(car type)
	(lambda (val)
	  (cons
	   (format "[%d][%d]" (length val) (length (car val)))
	   (concat
	    (if (equal org-babel-c-variant 'd) "[\n" "{\n")
	    (mapconcat
	     (lambda (v)
	       (concat
		(if (equal org-babel-c-variant 'd) " [" " {")
		(mapconcat (lambda (w) (format ,(cadr type) w)) v ",")
		(if (equal org-babel-c-variant 'd) "]" "}")))
	     val
	     ",\n")
	    (if (equal org-babel-c-variant 'd) "\n]" "\n}"))))))
     ((or (listp val) (vectorp val)) ;; a list declared in the #+begin_src line
      `(,(car type)
	(lambda (val)
	  (cons
	   (format "[%d]" (length val))
	   (concat
	    (if (equal org-babel-c-variant 'd) "[" "{")
	    (mapconcat (lambda (v) (format ,(cadr type) v)) val ",")
	    (if (equal org-babel-c-variant 'd) "]" "}"))))))
     (t ;; treat unknown types as string
      type))))

(defun org-babel-C-val-to-base-type (val)
  "Determine the base type of VAL which may be
'integerp if all base values are integers
'floatp if all base values are either floating points or integers
'stringp otherwise."
  (cond
   ((integerp val) 'integerp)
   ((floatp val) 'floatp)
   ((or (listp val) (vectorp val))
    (let ((type nil))
      (mapc (lambda (v)
	      (case (org-babel-C-val-to-base-type v)
		(stringp (setq type 'stringp))
		(floatp
		 (if (or (not type) (eq type 'integerp))
		     (setq type 'floatp)))
		(integerp
		 (unless type (setq type 'integerp)))))
	    val)
      type))
   (t 'stringp)))

(defun org-babel-C-var-to-C (pair)
  "Convert an elisp val into a string of C code specifying a var
of the same value."
  ;; TODO list support
  (let ((var (car pair))
	(val (cdr pair)))
    (when (symbolp val)
      (setq val (symbol-name val))
      (when (= (length val) 1)
	(setq val (string-to-char val))))
    (let* ((type-data (org-babel-C-val-to-C-type val))
	   (type (car type-data))
	   (formated (org-babel-C-format-val type-data val))
	   (suffix (car formated))
	   (data (cdr formated)))
      (format "%s %s%s = %s;"
	      type
	      var
	      suffix
	      data))))

(defun org-babel-C-table-sizes-to-C (pair)
  "Create constants of table dimensions, if PAIR is a table."
  (when (listp (cdr pair))
    (cond
     ((listp (cadr pair)) ;; a table
      (concat
       (format "const int %s_rows = %d;" (car pair) (length (cdr pair)))
       "\n"
       (format "const int %s_cols = %d;" (car pair) (length (cadr pair)))))
     (t ;; a list declared in the #+begin_src line
      (format "const int %s_cols = %d;" (car pair) (length (cdr pair)))))))

(defun org-babel-C-utility-header-to-C ()
  "Generate a utility function to convert a column name
into a column number."
  (case org-babel-c-variant
    ((c cpp)
     "int get_column_num (int nbcols, const char** header, const char* column)
{
  int c;
  for (c=0; c<nbcols; c++)
    if (strcmp(header[c],column)==0)
      return c;
  return -1;
}
"
     )
    (d
     "int get_column_num (string[] header, string column)
{
  foreach (c, h; header)
    if (h==column)
      return to!int(c);
  return -1;
}
"
     )))

(defun org-babel-C-header-to-C (head)
  "Convert an elisp list of header table into a C or D vector
specifying a variable with the name of the table."
  (let ((table (car head))
        (headers (cdr head)))
    (concat
     (format
      (case org-babel-c-variant
	((c cpp) "const char* %s_header[%d] = {%s};")
	(d       "string %s_header[%d] = [%s];"))
      table
      (length headers)
      (mapconcat (lambda (h) (format "%S" h)) headers ","))
     "\n"
     (case org-babel-c-variant
       ((c cpp)
	(format
	 "const char* %s_h (int row, const char* col) { return %s[row][get_column_num(%d,%s_header,col)]; }"
	 table table (length headers) table))
       (d
	(format
	 "string %s_h (ulong row, string col) { return %s[row][get_column_num(%s_header,col)]; }"
	 table table table))))))

(provide 'ob-C)

;;; ob-C.el ends here

debug log:

solving 8d5ff2f ...
found 8d5ff2f in https://git.savannah.gnu.org/cgit/emacs/org-mode.git

(*) Git path names are given by the tree(s) the blob belongs to.
    Blobs themselves have no identifier aside from the hash of its contents.^

Code repositories for project(s) associated with this public inbox

	https://git.savannah.gnu.org/cgit/emacs/org-mode.git

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).