get a clojure function's code

Question

Is there a way in clojure to get a function's code after the function has been loaded?

Ie. without doing something like [untested]

(defmacro blat [x] `(do (def code ~(quote (mexpand-all x)))
                        ~x)))
(blat (defn func [abc] (...)))

Rayne · Accepted Answer · 2011-01-16 22:45:55Z

8

You can get the source of a symbol using the clojure.repl/source function. However, this only works if the var for which the symbol resolves to is in a .clj file on the classpath. You can't, for example, do this:

user=> (defn foo [x] x)
#'user/foo
user=> (require 'clojure.repl)
nil
user=> (clojure.repl/source foo)
Source not found
nil

answered Jan 16, 2011 at 22:45

Rayne

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1 Comment

Ellery Newcomer Over a year ago

hmm. (mexpand-all (read-string (source-fn 'foo))) is about what I want

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