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-;;; ob-C.el --- org-babel functions for C and similar languages
-
-;; Copyright (C) 2010 Free Software Foundation, Inc.
-
-;; Author: Eric Schulte
-;; Keywords: literate programming, reproducible research
-;; Homepage: http://orgmode.org
-;; Version: 7.4
-
-;; 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 code.
-;;
-;; very limited implementation:
-;; - currently only support :results output
-;; - not much in the way of error feedback
-
-;;; Code:
-(require 'ob)
-(require 'ob-eval)
-(require 'cc-mode)
-
-(declare-function org-entry-get "org"
- (pom property &optional inherit literal-nil))
-
-(add-to-list 'org-babel-tangle-lang-exts '("c++" . "cpp"))
-
-(defvar org-babel-default-header-args:C '())
-
-(defvar org-babel-C-compiler "gcc"
- "Command used to compile a C source code file into an
- executable.")
-
-(defvar org-babel-c++-compiler "g++"
- "Command used to compile a c++ source code file into an
- executable.")
-
-(defvar org-babel-c-variant nil
- "Internal variable used to hold which type of C (e.g. C or C++)
-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-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 (calls `org-babel-C-expand')."
- (let ((org-babel-c-variant 'cpp)) (org-babel-C-expand 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 (calls `org-babel-C-expand')."
- (let ((org-babel-c-variant 'c)) (org-babel-C-expand 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++'."
- (let* ((tmp-src-file (org-babel-temp-file
- "C-src-"
- (cond
- ((equal org-babel-c-variant 'c) ".c")
- ((equal org-babel-c-variant 'cpp) ".cpp"))))
- (tmp-bin-file (org-babel-temp-file "C-bin-"))
- (cmdline (cdr (assoc :cmdline params)))
- (flags (cdr (assoc :flags params)))
- (full-body (org-babel-C-expand body params))
- (compile
- (progn
- (with-temp-file tmp-src-file (insert full-body))
- (org-babel-eval
- (format "%s -o %s %s %s"
- (cond
- ((equal org-babel-c-variant 'c) org-babel-C-compiler)
- ((equal org-babel-c-variant 'cpp) org-babel-c++-compiler))
- (org-babel-process-file-name tmp-bin-file)
- (mapconcat 'identity
- (if (listp flags) flags (list flags)) " ")
- (org-babel-process-file-name tmp-src-file)) ""))))
- ((lambda (results)
- (org-babel-reassemble-table
- (if (member "vector" (cdr (assoc :result-params params)))
- (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-read results))
- (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)))))
- (org-babel-trim
- (org-babel-eval
- (concat tmp-bin-file (if cmdline (concat " " cmdline) "")) "")))))
-
-(defun org-babel-C-expand (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)))
- (main-p (not (string= (cdr (assoc :main params)) "no")))
- (includes (or (cdr (assoc :includes params))
- (org-babel-read (org-entry-get nil "includes" t))))
- (defines (org-babel-read
- (or (cdr (assoc :defines params))
- (org-babel-read (org-entry-get nil "defines" t))))))
- (mapconcat 'identity
- (list
- ;; includes
- (mapconcat
- (lambda (inc) (format "#include %s" inc))
- (if (listp includes) includes (list 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")
- ;; 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\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-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))))
- (cond
- ((integerp val)
- (format "int %S = %S;" var val))
- ((floatp val)
- (format "double %S = %S;" var val))
- ((or (characterp val))
- (format "char %S = '%S';" var val))
- ((stringp val)
- (format "char %S[%d] = \"%s\";"
- var (+ 1 (length val)) val))
- (t
- (format "u32 %S = %S;" var val)))))
-
-
-(provide 'ob-C)
-
-;; arch-tag: 8f49e462-54e3-417b-9a8d-423864893b37
-
-;;; ob-C.el ends here
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