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refactor `org-babel-check-confirm-evaluate' macro

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- meaningful variable names
- don't overly pollute the name space of the macro body

* lisp/ob-core.el (org-babel-check-confirm-evaluate): Refactoring.
This commit is contained in:
Eric Schulte 2013-03-09 10:34:39 -07:00 committed by Achim Gratz
parent bc6564ab48
commit d7758f565c
1 changed files with 29 additions and 22 deletions
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51
lisp/ob-core.el
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@ -286,29 +286,36 @@ Returns a list
(defvar org-current-export-file) ; dynamically bound
(defmacro org-babel-check-confirm-evaluate (info &rest body)
"Pull some information from code block INFO and evaluate BODY."
"Evaluate BODY with special execution confirmation variables set.
Specifically; NOEVAL will indicate if evaluation is allowed,
QUERY will indicate if a user query is required, CODE-BLOCK will
hold the language of the code block, and BLOCK-NAME will hold the
name of the code block."
(declare (indent defun))
`(let* ((info0th (nth 0 ,info))
(info1st (nth 1 ,info))
(info2nd (nth 2 ,info))
(info4th (nth 4 ,info))
(eval (or (cdr (assoc :eval info2nd))
(when (assoc :noeval info2nd) "no")))
(eval-no (or (equal eval "no")
(equal eval "never")))
(export (org-bound-and-true-p org-current-export-file))
(eval-no-export (and export (or (equal eval "no-export")
(equal eval "never-export"))))
(noeval (or eval-no eval-no-export))
(query (or (equal eval "query")
(and export (equal eval "query-export"))
(when (functionp org-confirm-babel-evaluate)
(funcall org-confirm-babel-evaluate
info0th info1st))
org-confirm-babel-evaluate))
(code-block (if info (format " %s " info0th) " "))
(block-name (if info4th (format " (%s) " info4th) " ")))
,@body))
(org-with-gensyms
(lang block-body headers name eval eval-no export eval-no-export)
`(let* ((,lang (nth 0 ,info))
(,block-body (nth 1 ,info))
(,headers (nth 2 ,info))
(,name (nth 4 ,info))
(,eval (or (cdr (assoc :eval ,headers))
(when (assoc :noeval ,headers) "no")))
(,eval-no (or (equal ,eval "no")
(equal ,eval "never")))
(,export (org-bound-and-true-p org-current-export-file))
(,eval-no-export (and ,export (or (equal ,eval "no-export")
(equal ,eval "never-export"))))
(noeval (or ,eval-no ,eval-no-export))
(query (or (equal ,eval "query")
(and ,export (equal ,eval "query-export"))
(when (functionp org-confirm-babel-evaluate)
(funcall org-confirm-babel-evaluate
,lang ,block-body))
org-confirm-babel-evaluate))
(code-block (if ,info (format " %s " ,lang) " "))
(block-name (if ,name (format " (%s) " ,name) " ")))
,@body)))
(defsubst org-babel-check-evaluate (info)
"Check if code block INFO should be evaluated.