Inject value of macro into code using a variable

Inject value of macro into code using a variable

[wlharvey4 via Emacs-orgmode]

Is it possible to inject the value of a macro into code using a variable?

I set a macro called ‘version’ with a version number at the top of my .org file.  I would like to do something like this:

#+macro:version Version 0.2.5

#+name:code-name
#+begin_src js :tangle some-file.js :var ver={{{version}}} :exports both :results output
const version = ver;
#+end_src

When this code is evaluated during export, there is an error:

org-babel-ref-resolve: Reference ‘{{{version}}}’ not found in this buffer

Regards,
Wesley

Re: Inject value of macro into code using a variable

[Nicolas Goaziou]

Hello,

wlharvey4 via Emacs-orgmode <emacs-orgmode@gnu.org> writes:

> Is it possible to inject the value of a macro into code using
> a variable?

No, macros are mostly text replacement. They are not Babel related.

You may want to pass arguments to Babel blocks using other Babel blocks.

Regards,

-- 
Nicolas Goaziou

Re: Inject value of macro into code using a variable

[Fraga, Eric]

On Tuesday, 15 Oct 2019 at 09:37, wlharvey4 via Emacs-orgmode wrote:
> Is it possible to inject the value of a macro into code using a variable?

I use properties for this, as in:

#+begin_src org
  ,#+property: version 2.0.5
  ,#+header: :var version=(esf/get-parameter "benzenefeed")
  [...]
  ,#+begin_src somelanguage
  [... code that uses version ...]
  ,#+end_src
#+end_src

where
#+begin_src emacs-lisp
  (defun esf/get-parameter (p)
    (let ((value (org-entry-get (point) p 'inherit)))
      (message "parameter %s value obtained %s" p value)
      (if value
          (if (string-match-p "^[-+ ]*[[:digit:].]+$" value)
              (string-to-number value)
            value)
        (error "Property parameter \"%s\" not known." p))))
#+end_src 

-- 
Eric S Fraga via Emacs 27.0.50, Org release_9.2.6-552-g8c5a78