On Dec 14, 2011, at 11:48 PM, jaime wrote:
> I want to write a function named "debug" which will print out "date-
> time msg + current source-line + etc. info", but I don't know how to
> get the current source and line number of the running point (just like
> what REPL does when encounter any exceptions) ...
In addition to Jay's solution (getting line number information out of a form),
here's code that gets it from Java:
(defn user-file-position
"Guesses the file position (basename and line number) that the user is
most likely to be interested in if a test fails."
[]
(second (map #(list (.getFileName %) (.getLineNumber %))
(.getStackTrace (Throwable.)))))
(This is derived from the one in clojure.test.)
Midje has no less than three ways of determining which file/line to print.
They're in
https://github.com/marick/Midje/blob/master/src/midje/internal_ideas/file_position.clj
The other two are fairly specific to Midje, so they're probably harder to
understand, but they may be of use.
-----
Brian Marick, Artisanal Labrador
Now working at http://path11.com
Contract programming in Ruby and Clojure
Occasional consulting on Agile
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